JP2000265726A - Door lock controller for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a door lock controller for an automobile capable of automatically bringing an unlocking state without unlocking of a door by an occupant when the automobile jumps into water in a river or the like or when an emergency such as an engine failure on a railway crossing arises or the like. SOLUTION: The door lock controller for the automobile unlocks a door lock device when the state of an engine failure is detected under the state in which an engine switch is turned on. The state of the engine failure is sensed by detecting the on-state of an engine-oil pressure lamp, detecting 'on' of a charge lamp or detecting an output from an engine tachometer.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door lock control device for controlling a door lock of an automobile.

[0002]

2. Description of the Related Art Conventionally, in automobiles such as four-wheeled vehicles,
The door lock (locking) operation is performed simultaneously with a keyless entry receiver or a collective lock switch in a driver's seat, or with a door lock switch provided in each seat. On the other hand, the operation from the locked state to the unlocked state of the door, that is, the unlocking operation is performed by the switch (door unlock switch).
It was going in.

Further, in order to be able to open the door immediately in the event of a collision of an automobile, the impact at the time of the collision is detected by an impact sensor or the like, and the unlocked state of the door is automatically unlocked by an output signal. A door lock control device is disclosed in, for example, JP-A-7-269208.

[0004]

However, in a door lock control device using this impact sensor, for example, when an automobile jumps into the water of a river or the like, the impact is weak and the unlocking operation by the impact sensor or the like is performed. May not be performed, and it may not be possible to rescue an occupant trapped in the vehicle. Further, when the vehicle stalls at a railroad crossing or the like, even if the occupant tries to escape from the vehicle immediately, the switch may not be found in a hurry and the switch may be trapped in the vehicle, leading to an accident. In many cases, other occupants do not know the position of the switch, which increases the possibility.

[0005] The inventions according to the present invention have been made in view of such circumstances, and a door lock control of an automobile which can automatically be unlocked in such an emergency without an occupant performing an unlocking operation. It is to provide a device.

[0006]

In order to achieve the above object, according to the first aspect of the present invention, when an engine stop state is detected while an engine switch is on, a door lock device is provided. It is characterized by being unlocked.

According to a second aspect of the present invention, the engine stop state is detected by detecting an ON state of an engine oil pressure lamp. Is turned on, and furthermore, the invention according to claim 4 is characterized in that when the engine is stopped, the output of the engine tachometer is detected.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. 1 to 4 show an embodiment of a vehicle door lock control device according to the present invention. FIG. 1 is a circuit diagram thereof, and FIG. 2 is a block diagram of a vehicle speed sensitive type door lock controller adapter used in the device. FIG. 3 is a specific circuit diagram of the adapter, and FIG. 4 is an explanatory diagram showing an example of the signal processing.

In FIG. 1, a door lock control device 1 comprises:
For example, it has door lock motors 3a to 3d corresponding to four doors of a four-door four-wheeled vehicle, and a door lock controller 2 to which a keyless entry receiver 4 and a power door lock knob switch 5 are connected. A terminal t1 for connecting the power door lock knob switch of the door lock controller 2 and a contact 5a of the power door lock knob switch 5
A vehicle speed sensitive door lock controller adapter 6 (hereinafter, simply referred to as adapter 6) is connected between them.

[0010] As shown in FIG.
Conditional branch determination circuit 8, vehicle speed calculation circuit 9, vehicle speed determination circuit 1
0 and a door lock state monitoring circuit 11 and a controller 7 composed of a microcomputer or the like. An oil pressure voltage monitoring circuit 12 to which an oil pressure voltage V is supplied is provided to a conditional branch determination circuit 8 of the controller 7.
And a relay drive circuit 13 for outputting a door lock signal A and a door lock signal B, a constant voltage power supply circuit 15 for supplying a voltage (12 V DC) from a power supply 14 (battery), and the like.

As shown in FIG. 1, a terminal T1 of the oil pressure voltage monitoring circuit 12 is connected to a changeover switch 20.
The oil pressure sensor 17 is connected to a connection point between the changeover switch 20 and the oil pressure lamp 16. The changeover switch 20 has a b contact and a contact is grounded. The terminal T2 of the constant voltage power supply circuit 15 is connected to the power supply 14 via an on / off switch 18 and a main switch 19 (engine switch).
And a circuit (harness) to which a vehicle speed signal S is supplied is connected to a terminal T3 of the vehicle speed calculation circuit 9.

Further, the relay drive circuit 1 of the adapter 6
3 has a relay 29 (see FIG. 3), a terminal T4 is connected to a common contact of the relay 29, and a terminal T5 is connected to a b contact. As a result, when the relay 29 is not operating, the terminal T4 and the terminal T5 conduct, and when the relay 29 operates, the terminal T4 and the terminal T5 become non-conductive. The terminal T5 is connected to the terminal t1 of the door lock controller 2, the terminal T4 is connected to the contact 5a of the power door lock knob switch 5, and the terminal T6 of the adapter 6 is grounded.

FIG. 3 shows an example of a specific circuit of the adapter 6. As is clear from this figure, the adapter 6 is composed of the controller 7, the resistor 21, the smoothing capacitor 22, the three-terminal regulator 23, the large-capacity capacitor 24, and the diode 25 for backflow prevention connected to the terminal 2, T6. , A resistor 26 connected between the terminal T1 and the controller 7, and a resistor 2 connected to the controller 7
7, 28 and a relay 29 connected between terminals T4, T5
And a transistor 30, resistors 31, 32, etc., connected between the relay 29 and the output terminal of the controller 7.

The controller 7 of the adapter 6
Are set so that a predetermined output can be obtained under eight conditions according to the vehicle speed signal S supplied from the terminal T3, as shown in FIG. In FIG. 4, the relay terminal voltage is a voltage input to the controller 7 from the terminal T4, and the O / P voltage is a voltage from the terminal T1 to the resistor 26.
, And the E / G state indicates the state of the engine of the vehicle (running or stopped). The term “output” indicates a signal output from the output terminal of the controller 7 to the transistor 30.

The adapter 6 thus configured disconnects the harness connecting the contact 5a of the conventional power door lock knob switch 5 and the terminal t1 of the door lock controller 2, and connects one of the terminals to the terminal of the adapter 6. By connecting to T4 and the other end to terminal T5 of adapter 6, it is equipped in the vehicle.

Next, the operation of the door lock control device 1 will be described. First, in the state shown in FIG. 1 (the changeover switch 20 is turned on at the contact b), the on / off switch 18 is turned off and the adapter 6 is not operating. In this state, the controller 7 of the adapter 6 The terminals T4 and T5 are conducting as described above,
As a result, the door lock controller 2 operates as a non-vehicle speed sensitive type, and can use all functions exactly the same as those in the related art. The changeover switch 20 is turned off (a contact).
Also in this case, the door lock controller 2 operates as a non-vehicle speed sensitive type.

On the other hand, when the on / off switch 18 is turned on, the adapter 6 becomes operable. In this state, the main switch 19 is turned on to drive the vehicle, and when the vehicle reaches a predetermined vehicle speed, the vehicle speed signal S is output. The vehicle speed is supplied to the terminal T3 of the adapter 6 and the vehicle speed calculation circuit 9 calculates the vehicle speed. The calculated vehicle speed is input to the vehicle speed determination circuit 10 and compared with a predetermined value (threshold) set in advance.
When the vehicle speed becomes equal to or higher than a predetermined value, the relay control signal (ON signal) is sent from the conditional branch determination circuit 8 to the relay drive circuit 1.
3, the relay 29 in the circuit 13 is turned on, the contact becomes the a contact side, the conduction state between the terminals T4 and T5 is released, and the door lock knob signal is temporarily cut off.

As a result, the lock state is the same as when the power door lock knob switch 5 is set to the lock side (ON), and the doors are locked by the door lock motors 3a to 3d. In this lock state, the vehicle speed decreases. Even this is maintained by the setting shown in FIG. During the running of the vehicle, since the oil pressure sensor 17 is on, the voltage is supplied to the sensor 17 side, and the terminal T1 of the adapter 6 is in the GND state.

When the oil pressure sensor 17 is turned off in the state where the main switch 19 is turned on, for example, due to the occurrence of an emergency described later, a voltage is supplied to the terminal T1 of the adapter 6 via the on-state changeover switch 20. You. By the supply of the voltage to the terminal T1, a signal is output from the conditional branch determination circuit 8 to the relay drive circuit 13, the relay 29 in the circuit 13 is turned on, and the conduction state of the terminals T4 and T5 is released. The terminals 5 are opened. Thus, the door lock can be automatically unlocked just by turning off the oil pressure sensor 17 in an emergency.

As described above, in the door lock front roller 1 of the above embodiment, when the main switch 19 is turned on and the engine is operating, the oil pressure sensor 17 is turned off.
4. Open the door between T5 and unlock the door (unlock)
Oil pressure sensor 17
, The door lock can be automatically unlocked.

As a result, all door locks can be unlocked when the engine stops due to an accident such as a collision or flooding, or when the engine stops due to a sudden engine stop at a railroad crossing. The operation for unlocking the door lock can be performed quickly and automatically. Particularly, since the door lock of the seats other than the driver's seat can be unlocked by the detection signal of the oil pressure sensor 17, even if the occupant other than the driver's seat does not acknowledge the unlocking operation, an emergency accident occurs. The door lock can be automatically unlocked at the time, and the occupant is reliably prevented from being locked in the vehicle.

Further, by simply connecting the adapter 6 having the vehicle speed signal terminal T3 to the line between the terminal t1 of the door lock controller 2 and the contact 5a of the power door lock knob switch 5, the relay drive circuit 13 according to the vehicle speed is provided. Can be added to the non-vehicle-speed-sensitive door lock controller 2 so that functions similar to those of the vehicle-speed-sensitive door lock controller 2 can be easily added to the existing non-vehicle-speed-sensitive door lock controller. It can be changed to a sensitive door lock controller.

Further, the adapter 6 has six terminals T1.
To T6, it is possible to cut a part of the harness of the existing vehicle, for example, or to easily connect these terminals T1 to T6 to the empty terminals of the harness connector, and to install the terminal on the existing vehicle. Can be easily performed, and the operability and functionality of the door lock control device 1 can be greatly improved.

FIGS. 5 to 9 are circuit diagrams similar to FIG. 1 showing other embodiments of the door lock control device according to the present invention. Hereinafter, the same parts as those in FIG. First, the feature of the door lock control device 1 shown in FIG. 5 is that the changeover switch 20 of the door lock control device 1 shown in FIG. 1 is eliminated and the connection point between the oil pressure lamp 16 and the oil pusher sensor 17 is directly connected to the terminal of the adapter 6. It is at the point connected to T1. This embodiment also shows a case where the changeover switch 20 is always on.
The same operation and effect as the embodiment of FIG. 1 can be obtained, and the operation and effect that the changeover switch 20 becomes unnecessary and the circuit configuration can be simplified can be obtained.

A feature of the door lock control device 1 shown in FIG. 6 is that the connection point between the collector of the transistor 35 of the oil generator 34 and the charge lamp 36 is connected to the terminal T1 of the adapter 6 via the changeover switch 20. It is in.
In this embodiment, when the transistor 35 is turned on, the terminal T1 of the adapter 6 is set to GND. When the transistor 35 is turned off, an emergency is detected and the voltage is supplied to the adapter 6, and the voltage is applied to the terminals T4 and T5. Is opened, so that the same operation and effect as the embodiment of FIG. 1 can be obtained.

The feature of the door lock control device 1 shown in FIG. 7 is that a Zener diode 37 having one end grounded is connected to the terminal T1 of the adapter 6, and the collector of the transistor 39 of the igniter 38 and the ignition coil 40 are connected to the terminal T1. At the point where the connection points are connected. In this embodiment, since the transistor 39 gives the ignition energy of each cylinder, it is always ON-OFF during the operation of the engine.
Has been repeated. The adapter 6 has a terminal T
A program for driving the relay drive circuit 13 when the ON / OFF signal of the transistor 39 inputted from 1 is constantly monitored and the signal is not inputted repeatedly for a certain period is incorporated. Thereby, the same operation and effect as those of the embodiment of FIG. 1 can be obtained.

The door lock control device 1 shown in FIG. 8 is characterized in that the connection point between the oil pressure lamp 16 and the oil pressure sensor 17 is connected to the power supply of the adapter 6 via the changeover switch 20 and the on / off switch 18. The point is that the main switch 19 is connected between the power supply 14 and the oil pressure lamp 16 while being connected to the terminal T2. In this embodiment, when the main switch 19 is turned off, the voltage supply to the adapter 6 is cut off, so that the adapter 6 does not operate, and when the main switch 19 is turned on, the adapter 6 becomes operable. Thus, for example, the door can be automatically unlocked in accordance with the vehicle speed (occurrence of an emergency such as engine stall), and substantially the same operation and effect as the embodiment of FIG. 1 can be obtained.

The door lock controller 1 shown in FIG. 9 is characterized in that a contact 43a of a relay 43 is connected to a contact 5a of a power door lock knob switch 5 connected to a terminal t1 of the door lock controller 2. The coil 43b of the relay 43 is provided at both ends of the oil pressure lamp 16.
Are connected via a diode 44. In this embodiment, the power door lock knob switch 5 is locked when the switch is off, and unlocked when the oil pressure sensor 17 is off when the power door lock knob switch 5 is on.

In this embodiment, the main switch 1
When the oil pressure sensor 17 is turned on by turning on 9 (not shown), the relay 43 is operated and the door lock can be unlocked irrespective of the state of the power door lock knob switch 5. The same operation and effect can be obtained. Further, in the case of this embodiment, the door lock controller 2 can be used irrespective of the vehicle speed sensitive type or the non-vehicle speed sensitive type, and can be used together with the adapter 6 described above.

In each of the above embodiments, the case where the on / off switch 18 is connected to the terminal T2 of the adapter 6 and the case where the changeover switch 20 is connected to the terminal T1 or the terminal T2 of the adapter 6 has been described. The on / off switch 18 and the changeover switch 20 can be set as options. In each of the above embodiments,
Although a four-door vehicle has been described, the present invention is naturally applicable to a two-door vehicle, and the circuit configuration of the adapter 6, the number of terminals, the parts used, and the like in the above embodiment are merely examples. Needless to say, various modifications can be made without departing from the spirit of the present invention.

[0031]

As described in detail above, claims 1 to 4
According to the described invention, the engine stop state of the vehicle while the engine is operating is detected when the ON state of the engine oil pressure lamp is detected, the charge lamp is detected to be ON, or the output of the engine tachometer is detected. When this engine stoppage is detected, the door lock device can be unlocked, so that the occupant can unlock the door in the event of an emergency such as when the car jumps into water such as a river or stalls at a railroad crossing. This makes it possible to automatically unlock all the doors without performing the above operation, thereby achieving an effect such that an emergency situation can be properly dealt with.

[Brief description of the drawings]

FIG. 1 is a circuit diagram showing an embodiment of a vehicle door lock control device according to the present invention.

FIG. 2 is a block diagram showing a configuration of a vehicle speed sensitive door lock controller adapter used in the device.

FIG. 3 is a specific circuit diagram of the vehicle speed sensitive type door lock controller adapter.

FIG. 4 is an explanatory diagram showing an example of the signal processing.

FIG. 5 is a circuit diagram showing another embodiment of the vehicle door lock control device according to the present invention.

FIG. 6 is a circuit diagram showing still another embodiment of the vehicle door lock control device according to the present invention.

FIG. 7 is a circuit diagram showing still another embodiment of the vehicle door lock control device according to the present invention.

FIG. 8 is a circuit diagram showing still another embodiment of the vehicle door lock control device according to the present invention.

FIG. 9 is a circuit diagram showing still another embodiment of the vehicle door lock control device according to the present invention.

[Explanation of symbols]

1 Door lock control device 2 Door lock controller 3a to 3d Door lock motor 4 Keyless entry receiver 5 · Power door lock knob switch 5a · · · · Contact 6 · · · · Vehicle speed sensitive door lock controller adapter 7 · · · · Controller 8 · · · · Conditional branch determination circuit 9 ··········································································································································································································· 13・ Relay drive circuit 14 ・ ・ ・ ・ ・ ・ Power supply 16 ・ ・ ・ ・ ・ ・ Oil pressure lamp 17 ・ ・ ・ ・ ・ ・ Oil pressure sensor 18 ・ ・ ・ ・ ・ ・ On / off switch 19 ・ ・ ・ ・ ・ ・Mains Switch 20 ... Changeover switch 34 ... Oilator 36 ... Charge lamp 38 ... Igniter 40 ... Ignition coil 43 ... ... Relay T1-T6 ... Terminal t1 ... Terminal

Claims (4)

[Claims] 1. A door lock control device for an automobile, wherein the door lock device is unlocked when an engine stop state is detected while an engine switch is on. 2. The vehicle door lock control device according to claim 1, wherein the engine stop state is detected by detecting an ON state of an engine oil pressure lamp. 3. An engine stop state is detected by detecting that a charge lamp is turned on.
A vehicle door lock control device as described in the above. 4. The vehicle door lock control device according to claim 1, wherein the engine stop state is detected by detecting an output of an engine tachometer.