JPH09202196A - Vehicular occupant crash protection - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure higher degree of safely by restraining air pressure rising trend inside a compartment on the basis of a trigger signal. SOLUTION: A control circuit unit judges vehicle collision by receiving a detection signal from an acceleration sensor unit and outputs a trigger signal for actuating an occupant crash protection body. The trigger signal is connected to the occupant crash protection body composed of an air bag system, a seat belt system, etc., and also to an air pressure rising tread restraining device in the similar manner. An ignition system 9 is driven by the input of the trigger signal outputted at the time of the vehicle collision and a hook 11 is destroyed by the explosion thereof. A breather between the inside and the outside of the compartment is secured by a spring 10, which is being compressed by the hook 11, expanding and forcibly opening a sun roof 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle occupant protection device for protecting an occupant in the event of a vehicle collision.

[0002]

2. Description of the Related Art A conventional vehicle occupant protection device is, for example,
There is one as shown in FIG. In FIG. 3, 1 is a collision detection signal output module that outputs a trigger signal for operating the passenger protection device body, and 2 is an passenger protection device body that operates based on the trigger signal. When the collision detection signal output module determines a vehicle collision and outputs a trigger signal, the signal drives an ignition device such as an airbag system or a seat belt tensioning device, which is the body of the occupant protection device, to inflate the airbag. , I was trying to protect the occupant by tightening the seat belt.

[0003]

In the conventional vehicle occupant protection device which operates by judging a vehicle collision, when a vehicle collision is judged, an airbag is instantaneously activated based on a trigger signal for driving the occupant protection device. Due to the expansion, the air pressure inside the passenger compartment was rapidly rising. Therefore, in a normal passenger vehicle, the air bag is difficult to expand, and the number of air bags per vehicle must be limited in order to keep the air pressure rise within a specified value. there were.

It is an object of the present invention to improve the performance of a vehicle occupant protection device and provide the occupant with higher safety.

[0005]

The vehicle occupant protection system according to the present invention further includes a device for suppressing an increase in air pressure in the passenger compartment that operates in response to a trigger signal for determining a vehicle collision and inflating an airbag. , A ventilation port is secured between the inside and outside of the vehicle to suppress the increase in air pressure inside the vehicle due to the expansion of the air bag, which reduces the performance of the air bag due to the increase in air pressure and adversely affects the human body due to the increase in air pressure. Etc.) and provide higher safety to the occupant.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of a system showing the outline of the present invention. The collision detection signal output module 1 receives an acceleration sensor unit 3 for detecting the acceleration of the vehicle, receives a detection signal from the acceleration sensor unit 3 to judge a collision of the vehicle, and triggers a signal for operating the passenger protection device body. It is composed of a control circuit unit 4 for outputting 5. The trigger signal 5 is connected to the occupant protection device main body 2 including the airbag system 6, the seat belt system 7 and the like, and is also connected to the atmospheric pressure increase suppression device 8.

Next, the operation will be described.

Various accelerations act on the vehicle as the vehicle travels. Now, when a large acceleration is generated in the front-rear direction of the vehicle due to, for example, a collision while the vehicle is traveling at a constant speed, the control circuit unit determines from the output value from the acceleration sensor unit that the vehicle has collided, Outputs a trigger signal to the protective device body. When the body of the occupant protection device receives a trigger signal, the ignition device is driven in the airbag system to inflate the airbag, and the seat belt tensioning device tensions the seat belt to fix the occupant.
Similarly, the trigger signal drives the atmospheric pressure increase suppressing device to secure a vent hole between the inside and outside of the vehicle interior before the expansion of the airbag is completed, and suppress the increase in atmospheric pressure in the vehicle interior due to the expansion of the airbag. As shown in FIG. 2, for example, the device for suppressing the pressure increase in the vehicle compartment is composed of an ignition device 9, a spring 10, a hook 11, and a sunroof 12, and its operation is as follows.
The ignition signal is driven by the input of a trigger signal that is output when the vehicle collides, and the explosion destroys the hook and the spring that was contracted by the hook stretches and the sunroof is forcibly opened to secure a vent hole between the interior and exterior of the vehicle. To do.

Further, in the embodiment, the method of forcibly opening the sunroof by using the ignition device to secure the vent hole is used. However, if the method of suppressing the pressure increase due to the expansion of the airbag is performed by an electric motor or the like. Alternatively, the window may be opened, the decompression pump may be operated, and the air inside the vehicle may be discharged to the outside of the vehicle.

[0011]

According to the present invention, a collision of a vehicle is judged,
A vehicle occupant protection device equipped with a collision detection signal output module for outputting a trigger signal for operating an airbag system.The vehicle occupant protection device includes a conventional airbag system that operates based on a trigger signal and a vehicle when the airbag is inflated. By adding a device that suppresses an increase in air pressure in the room, that is, a device that secures a vent hole between the inside and outside of the vehicle, it is possible to prevent performance deterioration due to an increase in air pressure of the vehicle occupant protection device, and improve performance. Provides higher safety.

[Brief description of drawings]

FIG. 1 is a block diagram of the system of the present invention.

FIG. 2 is an explanatory view of a vent hole securing device mounting portion.

FIG. 3 is an explanatory view of a conventional vehicle occupant protection device.

[Explanation of Codes] 1 ... Collision detection signal output module, 2 ... Occupant protection device main body, 3 ... Acceleration sensor unit, 4 ... Control circuit unit, 5 ... Trigger signal, 6 ... Air bag system, 7 ... Seat belt tensioning device, 8 ... Atmospheric pressure rise suppressing device, 9 ... Ignition device, 10 ... Spring, 11 ... Hook, 12 ... Sunroof.

Claims (2)

[Claims] 1. A vehicle occupant protection device comprising: a vehicle collision determination means; and a means for outputting a trigger signal for operating the airbag system by the determination means, in a vehicle interior based on the trigger signal. An occupant protection device for a vehicle having means for suppressing an increase in atmospheric pressure of the vehicle. 2. The vehicle occupant protection device according to claim 1, wherein the means for suppressing an increase in air pressure inside the vehicle compartment has a vent hole between the inside and outside of the vehicle compartment.