JPH0559855A - Vehicle door lock/release system - Google Patents

Abstract

PURPOSE:To easily open a door from the outside at the time of collision. CONSTITUTION:A vehicle door lock release system includes an air bag system 10 and a power door lock system 20 provided side by side with the air bag system 10. An air bag controller 3 judges whether an air bag is swollen or not, and judges whether a vehicle is stopped or not in the case of judging that the air bag is swollen. Further, the air bag controller judges whether a fixed time passed or not after judging that the air bag is swollen and outputs a door lock release signal to a solenoid driver 15 in the case of judging that a vehicle is stopped or that a fixed time passed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle door unlocking system, and more particularly to a vehicle door unlocking system in which an air bag system and a power door locking system are linked to unlock a door in an emergency. Door unlock system

[0002]

BACKGROUND ART An air bag system was developed as one of passive restraint systems. It prevents passengers from colliding with structures inside the vehicle by inflating the air bladder greatly in a collision or the like. It is a system that assists the seat belt with a system that tries to prevent it. The power door lock system also forms part of a door lock key that locks and unlocks the door from outside the vehicle, a door lock switch that locks and unlocks the door from inside the vehicle, and a door lock mechanism. A vehicle speed sensitive system that is configured to include a door lock solenoid, etc., and recently, when a vehicle speed exceeds a certain value by adding a vehicle speed sensor, the door lock solenoid is activated to automatically lock the door. Is used relatively often. By the way, in a conventional vehicle, these two systems are mounted as systems independent of each other.

[0003]

As described above, in the conventional vehicle, since the airbag system and the power door lock system are independent of each other, the airbag system is activated and the airbag is inflated. At the time of a collision, the passengers in the vehicle are upset or sometimes faint due to the shock of the collision, so it is necessary to open the door from the outside, but in such a case, break the window glass to unlock the door. Or take measures such as calling a door lock expert (JAF, etc.).
With the former measure, it is not easy to break the window glass, so
The latter measure requires a certain amount of time, so it was not always sufficient when there was a risk of a vehicle fire.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a vehicle door unlocking system which can remedy the disadvantages of the prior art and can easily open the door from the outside in the event of a collision.

[0005]

The vehicle door lock release system of the present invention comprises an airbag system and a power door lock system provided in parallel with the airbag system. Then, the airbag controller that constitutes the airbag system has the first function of determining whether or not the airbag is inflated, and whether or not the vehicle is stopped by the output of the acceleration sensor when it is determined that the airbag is inflated. A second function for determining whether or not, a third function for determining whether or not a predetermined time has passed since it was determined that the airbag was inflated, and a case where it was determined that the vehicle stopped or a predetermined time passed. And has a fourth function of outputting a door lock release signal to a solenoid driver that constitutes the power door lock system. With such a configuration, the above-described object is to be achieved.

[0006]

The air bag controller determines whether or not the air bag is inflated. When it is determined that the airbag is inflated, it is determined by the output of the acceleration sensor whether or not the vehicle is stopped. When it is determined that the vehicle is stopped, a door lock release signal is output to the solenoid driver. .. On the other hand, if it is not determined that the vehicle is stopped, the airbag controller determines whether or not a certain time has passed since the airbag was inflated, and if it is determined that the certain time has elapsed, the solenoid driver is determined. A door lock release signal is output to. Then, in any of the above cases, the door lock is released when the release signal is output.

[0007]

[First Embodiment] A first embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 shows the configuration of the first embodiment of the present invention. In the embodiment of FIG. 1, an airbag system 10 including an acceleration sensor 1, a bag module 2 and an airbag controller 3, and a door lock key 1 are provided.
1, door lock switch 12, door lock module 1
3 and a power door lock system 20 including a door lock solenoid 14 and the like. Here, the acceleration sensor 1 is a sensor that detects an acceleration generated in the vehicle body and outputs a signal according to the acceleration. The bag module 2
The gas generator includes a squib (not shown) and an inflator (not shown), and an airbag (not shown).

The airbag controller 3 comprises a microcomputer (microcomputer) 4 and a standby power supply 5. When the microcomputer 4 determines that the vehicle body is accelerated by a certain amount or more by the output of the acceleration sensor 1, the standby power is supplied to the bag module to ignite the squib and generate gas in the inflator. The air bag is inflated. The door lock key 11 is a key for locking and unlocking the door from the outside of the vehicle as described above, and the door lock switch 12 is a switch for locking and unlocking the door from the inside of the vehicle. Can be turned on and off by remote control from other driver's seats at each door. The door lock module 13 includes a solenoid driver 15 that drives the door lock solenoid 14, and the door lock solenoid 1
Reference numeral 4 is for setting a locked or unlocked state of a door lock mechanism (not shown).

The above is the same configuration as usual, but in this embodiment, the microcomputer 4 in the airbag controller 3 is further used.
And a solenoid driver 15 in the power door lock module 13 are connected, and the microcomputer 4 has various functions related to door unlocking in addition to the control function of the bag module 2 described above. Here, the function of the microcomputer 4 for unlocking the door will be described with reference to the flowchart of FIG.

At the time of a collision, the microcomputer 4 uses the acceleration sensor 1
When it is determined that an acceleration of a certain magnitude or more has occurred in the vehicle body due to the output of, the standby power is supplied to the bag module 2 to ignite the squib as described above. From this, FIG.
The program shown in the flowchart is started. First, the microcomputer 4 determines whether or not the airbag is inflated by the presence or absence of a predetermined signal from the bag module 2 (step S101) [first function].

When it is determined that the airbag is inflated, a timer (not shown) is activated to start measuring time (step S102). Next, the microcomputer 4 determines from the output of the acceleration sensor 1 whether or not the acceleration is "0", that is, whether or not the vehicle is completely stopped (step S103) [second function]. When it is determined that the vehicle has stopped, the microcomputer 4 proceeds to step S105.
Then, the door lock release signal is output to the solenoid driver 15 in the power door lock module 13 [fourth function], and the control is ended. Upon receiving the door lock release signal, the solenoid driver 15 drives the door lock solenoid 14 to release the door lock.

On the other hand, when the acceleration is not "0" in the determination in step S103, the microcomputer 4 determines the time measured by the timer, that is, the time from the time when it is determined that the airbag is inflated to the fixed time T ( This time T is determined to be a time sufficient for the vehicle to stop) (step S104) [third function], and if a predetermined time T has passed, the process proceeds to step S105. Then, the door lock release signal is output to the solenoid driver 15 [fourth function], and the control ends. As a result, as described above, the solenoid driver 15 causes the door lock solenoid 14 to move.
Is driven and the door lock is released.

As described above, according to the first embodiment, since the door lock is released at the time of a collision, the door can be easily opened from the outside, and the airbag is inflated for a predetermined time T. Then, the door lock is released, which is also effective when the acceleration sensor fails during a collision.

[0015]

[Second Embodiment] Next, a second embodiment of the present invention will be described with reference to FIG. Here, the same reference numerals will be used for the same or equivalent components as in the first embodiment described above. This embodiment is the same as the first embodiment described above.
A feature is that a power door lock module 23 is provided in place of the power door lock module 13, and a vehicle speed sensor 21 is provided side by side with the power door lock module 23.

Here, the power door lock module 23
Is configured to include an AND circuit 22, a vehicle speed interface 24, and a solenoid driver 15. Of these, the AND circuit 22 receives the door lock release signal from the microcomputer 4 in the airbag controller 3 and the control signal output from the vehicle speed interface 24 when the vehicle speed is "0" at the same time. This is a circuit that outputs a door lock release signal. Further, the vehicle speed interface 24 outputs a door lock signal to the solenoid driver 15 when the vehicle speed detected by the vehicle speed sensor 21 is a constant value C or more, and when the vehicle speed is “0”, the AND circuit 22 is operated as described above. It outputs a control signal. The other components are the same as those in the first embodiment described above.

According to the second embodiment constructed as described above, the same operational effect as that of the first embodiment can be obtained, and when the vehicle speed exceeds a constant value C, the door is automatically locked. Even if the acceleration sensor 1 fails at the time of a collision, there is an advantage that the stop of the vehicle is surely detected and the door lock is released.

[0018]

[Third Embodiment] A third embodiment of the present invention will now be described with reference to FIG. In this embodiment, in the first embodiment described above, the backup power supply 5 in the airbag controller 3 is connected to the power door lock module 13, and the microcomputer 4 switches on the backup power supply 5 at the same time when the control program of FIG. 2 is started. It is configured to be supplied to the power door lock module 13. Other configurations are the same as those in the first embodiment described above.

The third embodiment can obtain the same effects as those of the first embodiment, and in the event of a collision, the battery as the main power source is disconnected, or the harness forming the power supply line is broken. However, there is an advantage that the door lock is released.

[0020]

As described above, according to the present invention,
Since the door lock is automatically released by the function of the airbag controller when the airbag is inflated in the event of a collision, we have provided an unprecedented vehicle door unlock system that allows the door to be easily opened from the outside. can do. In the present invention, the function of the airbag controller is mainly used to unlock the door at the time of a collision, but the same effect can be obtained even if a similar control unit is provided in the power door lock module. The configuration of the invention has an effect that it can be easily implemented by converting the program software of the conventional airbag controller.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a first exemplary embodiment of the present invention.

FIG. 2 is a flowchart showing a main control program of a microcomputer in the airbag controller shown in FIG.

FIG. 3 is a block diagram showing a configuration of a second exemplary embodiment of the present invention.

FIG. 4 is a block diagram showing a configuration of a third exemplary embodiment of the present invention.

[Explanation of symbols]

 1 Acceleration Sensor 3 Airbag Controller 10 Airbag System 15 Solenoid Driver 20 Power Door Lock System

Claims (1)

[Claims] 1. A first system comprising an airbag system and a power door lock system provided in parallel with the airbag system, wherein an airbag controller constituting the airbag system determines whether or not the airbag is inflated. Function, and when you determine that the airbag is inflated,
A second function of determining whether or not the vehicle has stopped based on the output of the acceleration sensor, a third function of determining whether or not a predetermined time has elapsed from the time of determining that the airbag has inflated, and a vehicle A vehicle door lock release having a fourth function of outputting a door lock release signal to a solenoid driver that constitutes the power door lock system when it is determined that the vehicle has stopped or a certain time has elapsed system.