JPH0513227B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a vehicle door lock device for locking and unlocking a vehicle door. This improves the anti-theft function.

[Conventional technology]

As a conventional vehicle door lock device,
A vehicle door lock device as disclosed in Japanese Patent No. 60-85172 is generally known. This allows each door of the vehicle to be centrally locked and unlocked using a switch installed inside the vehicle that can select locking or unlocking.
No. 60-85172 is designed to prevent the door from being locked while the key is inserted into the ignition key cylinder.

[Problem that the invention seeks to solve]

However, with conventional vehicle door lock devices, even if a passenger locks each door of the vehicle to prevent theft, if the door window is even slightly open, the passenger can operate the unlock switch inside the vehicle from the gap. This poses a problem in that each door can be easily unlocked, making it easy for theft to occur.

SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicle door locking device that inhibits unlocking by an indoor unlocking switch when a vehicle door is locked, and is less likely to be stolen.

[Means for solving problems]

Therefore, in order to solve the above-mentioned problems, the present invention provides an indoor unlock switch that is installed inside a vehicle and outputs a first unlock signal, and an indoor unlock switch that is installed outside the vehicle and outputs a second unlock signal. For a vehicle, comprising: an outdoor unlock switch that outputs an output; and an unlock device that operates to unlock a door of the vehicle when either the first unlock signal or the second unlock signal is input. In the door lock device, a first release signal generating means receives the second unlock signal from the outdoor unlock switch and outputs a predetermined release signal; and an ignition key cylinder provided in the interior of the vehicle. a second release signal generating means for detecting the presence of the ignition key of the vehicle and outputting the predetermined release signal; Technical means comprising: unlocking inhibiting means for canceling the prohibition of the unlocking operation of the unlocking device when the predetermined release signal is input from either the signal generating means or the second releasing signal generating means. Adopt.

[Effect]

With the above configuration, the second release signal generating means and the unlocking inhibiting means inhibit the unlocking operation by the indoor unlocking switch when the ignition key is not present in the ignition key cylinder. Even if a third party operates the unlock switch inside the room through the gap with the door window slightly open, the door will not be unlocked, so this is an excellent vehicle door lock device that is less likely to be stolen. There is.

Moreover, even if you lock the vehicle door with a spare ignition key when you park your vehicle and leave the vehicle with the air conditioner running, the ignition key will not be present in the ignition key cylinder. If so, the vehicle doors will be locked, but the prohibition of unlocking the interior unlock switch, which corresponds to a keyless lock device, will be lifted and the vehicle will be allowed to unlock, so if there are other occupants in the vehicle, Even if the door is turned on, the occupant can unlock the door and exit the vehicle by operating the interior unlock switch, which is an excellent advantage.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on the drawings. In this embodiment, the present invention is applied to a device in which all doors are locked and unlocked by operating a central locking/unlocking switch provided on the driver's door.

The indoor switch 101 is provided next to the driver's seat, and its movable contacts can select between a lock terminal 101a, an unlock terminal 101b, and a neutral position. This unlock terminal 101b is an indoor unlock switch, and when the movable contact is turned on to the unlock terminal 101b side, it outputs a low level signal (hereinafter referred to as L) which becomes a first unlock signal. Unlock terminal 101b is OFF
If so, the output is high level (hereinafter referred to as H).
It is. The key switch 102 and the key unlock switch 103, which is an outdoor unlock switch, operate in conjunction with key cylinders installed outside the vehicle, for example, on the driver's door and the passenger door, and when the key cylinder is twisted to the unlock side, the key unlocks. When the switch 103 is turned on and the second unlock signal L is output, if it is twisted to the lock side,
The key lock switch 102 turns on and outputs a lock signal of L.

When the door of the driver's seat is closed, the door switch 104 turns its contact OFF and outputs H; if the door is open, the door switch 104 turns ON its contact and outputs L. The lock knob switch 105 works in conjunction with the lock knob for manually locking and unlocking the driver's door, and is turned off when the lock knob is in the lock position.
It outputs H, and if it is in the unlocked position, it outputs L, which is a knob signal, when it turns ON. Each of these switches is input to a door lock control circuit 110, which operates an actuator 140 provided on each door of the vehicle.
Controls locking and unlocking of all doors. Although the actuator 140 is a solenoid in this embodiment, it can also be a motor. Furthermore, code 2
00 is the battery installed in the vehicle.

The door lock control circuit 110 includes an actuator drive circuit 130, an unlock prohibition circuit 150 and a flip-flop 160, which are unlock prohibition means, a key lock detection circuit 170, a keyless lock detection circuit 180, and a key unlock detection circuit which is a first release signal generation means. It consists of 190.

Signals from the indoor switch 101, key lock switch 102, and key unlock switch 103 are input to the actuator drive circuit 130.

This actuator drive circuit 130 can be divided into a lock system and an unlock system depending on the input signal. The lock system includes NOT gates 111, 112, OR gate 113, and timer 11.
4. Consists of a transistor 115, a relay 116, and a two-contact switch 117 of the relay 116, and the unlock system includes NOT gates 118, 119, an OR gate 120, a timer 121, and a transistor 12.
2, a relay 123, and a two-contact switch 124 of the relay 123, and an unlock prohibition circuit 150 is provided between the timer 121 and the transistor 122.

This actuator drive circuit 130 switches the direction of the current flowing through the actuator 140 between the direction of arrow A (lock) and the direction opposite to arrow A (unlock), thereby locking and unlocking all doors. The aforementioned unlock prohibition circuit 150
The output of flip-flop 160 is input to the other terminal of the AND gate. The flip-flop 160 has two NOR gates 161, 16
A general R-S flip-flop consisting of 2
The output of the key unlock detection circuit 190 is input to the R (Reset) input, and the outputs of the key lock detection circuit 170 and the keyless lock detection circuit 180 are input to the S (Set) input.

The ignition key switch 195 is a switch that closes when the key is inserted into the ignition key cylinder in the vehicle interior or when the ignition key is turned. Tension key detection circuit 196
detected by. The ignition key switch 195 and the ignition key detection circuit 196 correspond to second release signal generating means.

Then, when the ignition key switch 195 is closed, the ignition key detection circuit 19
6 outputs this detection result to the NOR gate 162, and sets the output of the flip-flop 160 to H unconditionally.

Next, FIG. 3 shows a specific configuration of a key lock detection circuit 170 that detects when the driver closes the door and locks all doors with the key. The signal from the keylock switch 102 is inputted via a NOT gate 171 to a differentiating circuit consisting of a capacitor 173 and resistors 172 and 174. The output of this differential circuit and the output of the door switch 104 are AND
is input to gate 175, and this AND gate 17
The output of the key lock detection circuit 170 is the output of the key lock detection circuit 170.

FIG. 4 shows a specific configuration of a keyless lock detection circuit 180 that detects when the driver turns the lock knob to the lock side and closes the door. A signal from the door switch 104 is inputted via an amplifier 181 to a differentiating circuit consisting of a capacitor 183 and resistors 182 and 184. The output of this differential circuit and the output of lock knob switch 105 are input to AND gate 185, and the output of this AND gate 185 becomes the output of keyless lock detection circuit 180.

FIG. 5 shows a specific configuration of a key unlock detection circuit 190 that detects when the driver unlocks all doors using a key from outside the vehicle. The key unlock switch 103 signal is NOT gate 1.
Through 91, capacitor 193 and resistor 19
2,194, and its output becomes the output of the key unlock detection circuit 190.

The operation of this embodiment with the above-described configuration will be explained based on the drawings.

Indoor switch 101, key lock switch 102, and key unlock switch 10 of this embodiment
Locking and unlocking by the signal No. 3 is similar to a generally known vehicle door locking device, and all doors are unlocked by signals from the unlock terminal 101b of the indoor switch 101 and the key unlock switch 103, and the lock terminal 101a of the indoor switch 101 is used to unlock all doors.
All doors are locked by the signal from the key lock switch 102. Since the purpose of the present invention is to prohibit unlocking by the interior unlock switch when the vehicle door is locked, we will discuss when unlocking is prohibited and when this prohibited condition is released.

First, two cases in which unlocking by the indoor switch 101 is prohibited will be described.

One is when the driver gets out of the vehicle and locks all doors using the key lock switch 102. When the driver gets out of the vehicle and uses the key to turn the key cylinder to the lock side, the key lock switch 102 is turned on and its output is low. At this time, if the door is completely closed, the door switch 104 is
It is OFF and its output is H. Therefore, the key lock detection circuit 170 detects that the key lock switch 102 is
The moment it turns on, it outputs an H trigger pulse.
Since the output of the key lock detection circuit 170 is input to S (Set) of the flip-flop 160,
The output of the flip-flop 160 becomes L, and the unlock prohibition circuit 150 cuts off the output of the timer 121, prohibits the unlock operation of the actuator 140, and enters an unlock prohibit state. At this time,
The signal from the key lock switch 102 is input to the lock system of the actuator drive circuit 130, and all doors are simultaneously locked.

The other situation is when the driver turns the lock knob on the driver's door to the lock position and then closes the door. When the driver sets the lock knob to the lock side, the lock knob switch 105 turns OFF and its output becomes H. When the driver's door is closed, the door switch 104 is turned off and its output becomes H. At this moment, the keyless lock detection circuit 180 outputs an H trigger pulse. This output is input to S of the flip-flop 160, the output of the flip-flop 160 becomes L, and the unlock inhibit circuit 1
50 cuts off the output of the timer 121 and enters an unlocking prohibited state. This type of operation using the driver's seat lock knob locks only the driver's seat door.

Next, when canceling the inhibition of unlocking by the indoor switch 101, the driver turns the key cylinder toward the unlocking side and turns the key unlocking switch 103 ON. When the driver turns the key cylinder to the unlock side, the key unlock switch 103 is turned on and its output becomes L.
The signal from the key unlock switch 103 is input to the key unlock detection circuit 190, and the key unlock detection circuit 190 outputs an H trigger pulse. This output is the R of flip-flop 160.
(Reset), the unlock prohibition circuit 150 begins to pass the signal of the timer 121, and the above-mentioned prohibition state is canceled. At the same time, the signal from the key unlock switch 103 is input to the unlock system of the actuator drive circuit 130, and all doors are unlocked.

Here, if the key is inserted into the ignition key cylinder inside the vehicle or if the ignition key is twisted, the ignition key switch 195 is closed, so the ignition key is detected. The circuit 196 receives this detection result.
The signal is output to the NOR gate 162, and the output of the flip-flop 160 is unconditionally set to H. As a result, as described above, the unlock prohibition circuit 150 passes the signal of the timer 121, and the above-mentioned prohibited state is released.

Through each operation of this embodiment as described above,
In this embodiment, when the driver normally locks the vehicle and leaves the vehicle, that is, when the driver locks all doors with the key lock, and when the driver's door is locked with the lock knob, the unlocking prohibition state is established. Therefore, even if the unlock switch 101b of the indoor switch 101 is turned on, all the doors will not be unlocked. This unlock prohibition state can be canceled by unlocking the key.

Further, according to the above embodiment, when the ignition key switch 195 is closed, the ignition key detection circuit 196 converts this detection result into a NOR
Output to gate 162 and flip-flop 16
Since the output of 0 is unconditionally set to H, this results in
The unlocking prohibition state does not occur while the driver is riding the vehicle, and the locking/unlocking is always possible using the indoor switch 101.

In addition, AND which is the unlock prohibition means 150
A gate may be provided on the input side of the timer 121.

Further, in this embodiment, unlocking is prohibited and canceled only by operating the driver's seat door, but it may also be possible to do this from the passenger's door.

Further, as shown in the flowchart shown in FIG. 6, the present invention may be realized by a microcomputer and its program. In the flowchart as shown in Figure 6, step 602 and step
604 requires delay means such as repeating detection for an appropriate period of time. Further, the flowchart in FIG. 6 is an example of a flowchart using a microcomputer and its program, and various modifications can be made to this flowchart.

Furthermore, a keyless entry system may be used as the outdoor unlocking switch of the present invention, and the unlocking signal from this keyless entry system may be used as the second unlocking signal.

[Brief explanation of drawings]

FIG. 1 is a block configuration diagram of the present invention, FIG. 2 is a circuit configuration diagram showing an embodiment of the present invention, and FIG. 3 is a block configuration diagram of the present invention.
A detailed circuit diagram of the key lock detection circuit 170 shown in FIG.
FIG. 4 shows the keyless lock detection circuit 180 of FIG.
5 is a detailed circuit diagram of the key unlock detection circuit 190 of FIG. 2, and FIG. 6 is a flowchart showing another embodiment of the present invention. 1... Indoor unlocking switch, 2... Outdoor unlocking switch, 3... Unlocking device, 4...
. . . first release signal generation means, 5 . . . second release signal generation means, 6 . . . unlock prohibition means.

Claims (1)

[Scope of Claims] 1. An indoor unlock switch that is installed inside a vehicle and outputs a first unlock signal; an outdoor unlock switch that is installed outside the vehicle and outputs a second unlock signal; an unlocking device that operates to unlock a door of the vehicle when either the first unlocking signal or the second unlocking signal is input;
A vehicle door lock device comprising: a first release signal generating means for receiving the second unlock signal from the outdoor unlock switch and outputting a predetermined release signal; and an ignition switch provided in the interior of the vehicle. a second release signal generating means for detecting the presence of the ignition key of the vehicle in the ignition key cylinder and outputting the predetermined release signal; Unlock prohibition means for canceling the prohibition of the unlocking operation of the unlocking device when the predetermined release signal is inputted from either the first release signal generation means or the second release signal generation means; A vehicle door lock device characterized by: