KR19980047665A - Airbag System for Passenger Protection in Vehicle Overturning - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an airbag system for protecting an occupant when overturning a vehicle, and more particularly to an airbag system for protecting an occupant during overturning of a vehicle to mitigate an impact applied to a loop when an accident occurs when the vehicle is overturned while driving.

As described above, the present invention provides a plurality of shock sensors for detecting a shock applied to the loop when the vehicle is overturned in a loop of the vehicle, and in response to the shock detection signals from the plurality of shock sensors. Control means for generating a corresponding airbag module selection signal and an airbag operation signal, a gas generator ignition circuit for applying a gas generator ignition ignition current in response to the airbag operation signal, and a loop of the vehicle in response to the shock sensor Installed at predetermined intervals within the vehicle, occupant of the vehicle overturning, characterized in that composed of a plurality of airbag module to selectively operate the airbag by the ignition current applied from the ignition circuit according to the airbag module selection signal of the control means Provide a protective airbag system.

As described above, in the present invention, the airbag installed in the roof is operated according to the operation of the shock sensor when the vehicle is overturned while driving, thereby preventing the occupants from being in the cabin of the vehicle from being seen and buffering the shock applied to the vehicle body. There is an advantage that can prevent the damage and thereby increase the marketability.

Description

Airbag System for Passenger Protection in Vehicle Overturning

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an airbag system for protecting an occupant when overturning a vehicle, and more particularly to an airbag system for protecting an occupant during overturning of a vehicle to mitigate an impact applied to a loop when an accident occurs when the vehicle is overturned while driving.

In general, a steering column adopts a safety steering column that is superimposed or crushed as a steering column in preparation for a collision of the vehicle, in particular a frontal collision of the vehicle, which may cause a great loss of life. Vehicles with air bags are installed to protect the driver on the wheels.

In particular, the airbag system serves as a safety device that is very useful to protect the driver (or passenger) as a seat belt auxiliary device.

This airbag system is operated by the gas generator when the shock sensor (for example, gravity sensor) installed at the front of the vehicle body, for example, at both ends of the dashboard, receives a certain amount of impact energy from the front of the vehicle. It has a structure for rapidly inflating the airbag built in.

More recently, dual airbag systems have been proposed with airbags mounted on the front and side of the passenger seat on the instrument panel so that not only the driver but also the passenger can be protected from the frontal collision of the vehicle.

However, the airbag system is installed for the purpose of protecting the occupant against the frontal collision of the vehicle and the vehicle, and the reinforcement 15 installed between the outer panel 11 and the inner panel 13 of the roof is a Since the roof has a limited size in a large area, the reinforcing material 15 penetrates inwardly as the loop is crushed inwards, thereby applying pressure or impact to the occupant's head. It never happened.

Accordingly, the present invention has been made in view of the prior art, the object of which is to provide an airbag system for protecting the occupants during vehicle overturning to protect the occupants in the cabin by alleviating the impact applied to the roof in the event of an accident that the vehicle overturns while driving. have.

1 is a schematic side cross-sectional view showing a loop of the prior art,

Figure 2 is a schematic side cross-sectional view showing an airbag system for protecting the occupant during vehicle overturning according to the present invention,

3 is a schematic block diagram showing an airbag protection system for occupant protection during vehicle overturning according to the present invention;

4 is a control flow diagram of the system of FIG.

Explanation of symbols on the main parts of the drawings

11: Outer panel 13: Inner panel

21: stiffener 23: airbag module

25: shock sensor 27: gas generator

33: ECU35: gas generator ignition circuit

In order to achieve the above object, the present invention provides a plurality of shock sensors for detecting a shock applied to the loop when the vehicle is rolled over at a predetermined interval in the loop of the vehicle, and the shock detection signal from the plurality of shock sensors A control means for generating an airbag module selection signal and an airbag operation signal corresponding thereto in response thereto, a gas generator ignition circuit for applying a gas generator ignition ignition current in response to the airbag operation signal, and corresponding to the impact sensor. And a plurality of airbag modules installed at predetermined intervals in the roof of the vehicle and selectively operating the airbag by an ignition current applied from the ignition circuit according to the airbag module selection signal of the control means. Provides an airbag system for protecting passengers when the vehicle is overturned.

As described above, in the present invention, the corresponding airbag installed in the loop operates according to the operation of the impact sensor during the vehicle overturning while driving to alleviate the shock applied to the loop, thereby causing the roof to crush into the cabin, thereby contributing to the life of the occupant in the cabin. I can protect it.

EXAMPLE

Hereinafter, preferred embodiments of the present invention as described above will be described in more detail with reference to the accompanying drawings.

2 is a schematic side cross-sectional view showing the airbag system for protecting the occupant during vehicle overturning according to the present invention, and FIG. 3 is a schematic block diagram showing the airbag system for protecting the occupant during vehicle overturning according to the present invention, and FIG. Control flow chart of the system.

In the system configuration of the present invention, for example, a shock sensor 25 installed in a roof of a vehicle and operated according to an impact applied to the loop when the vehicle is overturned is provided at the input side of an electronic control unit (ECU) 33. Connected. The electronic control unit 33 can be composed of, for example, a microprocessor (CPU), a RAM for temporarily storing processing data, a ROM for storing a system control program, and of course, it can also be configured as another electronic circuit. Do.

On the other hand, a gas generator ignition circuit 35 is connected to the output side of the ECU 33, and the output of the gas generator ignition circuit 35 is interpolated between the out panel 11 and the out panel 13. It is applied to the gas generator 27 of the airbag module 23 inserted into the center of the reinforcing material 21.

In addition, the reinforcing material 21 is formed in the groove 21a inwardly so that the lower portion is blocked and the upper portion is inserted into the airbag module 23 into the groove 21a to install the airbag in the room direction during operation of the airbag system It was formed to prevent swelling.

In the above system configuration, the impact sensor 25 may use a gravity sensor, which is a type of A contact switch currently commercially available, but may directly detect an impact applied to the loop rather than a gravity sensor that detects a change in gravity acceleration. More preferred are sensors that can.

Hereinafter, the operation of the airbag system according to the present invention having the configuration as described above will be described in detail with reference to FIGS. 3 and 4.

If a rollover accident occurs due to the driver's fault or accident while driving (S1), a shock is momentarily sensed by the impact sensor 25 installed in the loop (S2), and a shock signal is applied to the ECU 33, thereby The ECU 33 which detects the impact signal drives the gas generator ignition circuit 35 so as to control the ignition current to flow through the gas generator 27.

Therefore, the airbag in the airbag module 23 is rapidly expanded to the outside of the loop (S3). Accordingly, the reinforcement 21 is prevented from inward by the impact applied to the roof, thereby preventing the occupant in the cabin of the vehicle from being damaged, and alleviating the impact on the roof and the body of the vehicle. To dampen damage to the car body.

As described above, according to the present invention, when the vehicle is overturned while driving, the airbag installed in the roof operates according to the operation of the shock sensor in the loop, thereby preventing the vehicle from seeing the damage to the occupant occupying the cabin. And it is possible to prevent the damage to the vehicle body by cushioning the shock applied to the vehicle body and there is an advantage that can increase the merchandise accordingly.

In the above, the present invention has been illustrated and described with reference to specific preferred embodiments, but the present invention is not limited to the above-described embodiments and is not limited to the spirit of the present invention. Various changes and modifications can be made by those who have

Claims (2)

(1) a plurality of shock sensors provided at predetermined intervals in the roof of the vehicle for detecting shocks applied to the loop when the vehicle is overturned; and (2) in response to the shock detection signals from the plurality of shock sensors. Control means for generating a corresponding airbag module selection signal and an airbag operation signal, (3) a gas generator ignition circuit for applying a gas generator ignition ignition current in response to the airbag operation signal, and (4) the impact sensor And a plurality of airbag modules installed in the roof of the vehicle at predetermined intervals and selectively operating the airbag by an ignition current applied from the ignition circuit according to the airbag module selection signal of the control means. Airbag system for occupant protection during vehicle overturning. The airbag system of claim 1, wherein the reinforcement inserts the airbag module by forming a recess so that the upper portion of the reinforcement is opened to prevent the airbag from invading the inside of the vehicle during the operation of the airbag system.