JPH0465196B2 - - 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]

In order to achieve the above object, the present invention provides an indoor unlock switch that is installed inside a vehicle and outputs a predetermined unlock signal, and an outdoor unlock switch that is installed outside the vehicle and outputs the unlock signal. A vehicle door lock device comprising a switch and an unlocking device that operates to unlock a door of the vehicle when the unlock signal is input, detecting that the door of the vehicle is locked and outputting a predetermined prohibition signal. a lock knob that is interlocked with the outdoor unlock switch via an interlocking mechanism and mechanically unlocks the door of the vehicle when it is interlocked with the outdoor unlock switch by the interlocking mechanism; a lock knob switch that outputs a predetermined knob signal when the lock knob is unlocked; a release signal generating means that outputs a predetermined release signal when the unlock signal and the knob signal are input; and a release signal generating means that outputs a predetermined release signal when the unlock signal and the knob signal are input; A technical means is adopted which includes an unlock prohibiting means for prohibiting the operation of the unlocking device and canceling the prohibition of the operation of the unlocking device when the canceling signal is input.

[Effect]

The present invention operates as follows through the above-mentioned technical means.

The prohibition signal generating means detects that the vehicle door is locked, and when this is detected, outputs a prohibition signal to the unlocking prohibition means. When the unlocking inhibiting means receives this inhibiting signal, it inhibits the operation of the unlocking device that unlocks the door.
In this prohibited state, even if the indoor unlock switch is operated and an unlock signal is input to the unlock device and the release signal generating means, the doors of the vehicle will not be unlocked.

Next, when the outdoor unlock switch is operated in this prohibited state, the lock knob switch that is interlocked with the outdoor unlock switch via the interlocking mechanism is also operated, an unlock signal is output from the outdoor unlock switch, and the lock knob switch is activated. A knob signal is output from. This unlock signal is input to the unlock device and the release signal generating means, and the knob signal is input to the release signal generating means. When the unlock signal and the knob signal are input, the release signal generating means outputs a predetermined release signal to the unlock inhibiting means, whereby the unlock inhibiting means releases the inhibition of the operation of the unlocking device, and the unlocking device Unlock the door.

Furthermore, in the above-mentioned prohibited state, if the lock knob is unlocked from inside the vehicle and the indoor unlock switch is operated, an unlock signal is input to the unlock device, and an unlock signal and a knob signal are input to the release signal generating means. be done. Therefore, the release signal generating means outputs a release signal to the unlocking inhibiting means, the unlocking inhibiting means releases the inhibition of the operation of the unlocking device, and the unlocking device unlocks the door.

〔Effect of the invention〕

As described above, the device of the present invention can prohibit unlocking of the door by the indoor unlock switch when the vehicle door is locked, and can provide a door lock device for a vehicle that is less likely to be stolen.

Furthermore, since an interlocking mechanism is provided from the outdoor unlock switch to the lock knob switch, this inhibited state can be canceled by operating only the outdoor unlock switch and the indoor unlock switch and lock knob switch.

〔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 (hereinafter referred to as L) signal which becomes an unlock signal. When the unlock terminal 101b is OFF, the output is at a high level (hereinafter referred to as H).
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. The switch 103 turns on and outputs L, which is an unlock signal, and when it is turned to the lock side, the key lock switch 102 turns on and outputs L, which is a lock signal.

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. Furthermore, in this lock knob switch 105, the key cylinder and lock knob are unilaterally interlocked by a mechanical interlocking mechanism, so when the key cylinder is twisted to the lock side, the lock knob switch is turned OFF and the key cylinder is unlocked. When twisted to the side, the locking knob switch 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 to control locking and unlocking of all doors. Although this actuator 140 is a solenoid in this embodiment,
It can also be done with a motor. Incidentally, the reference numeral 200 is a battery mounted on the vehicle.

The door lock control circuit 110 includes an actuator drive circuit 130, an unlock prohibition circuit 150 and a flip-flop 160 as unlock prohibition means, and a key lock detection circuit 170 and a keyless lock detection circuit 18 as prohibition signal generation means.
0, and a key unlock detection circuit 190 which is release signal generating means.

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 a NOT gate 118, a timer 119,
Transistor 120, relay 121, relay 12
It consists of a two-contact switch 122, and a timer 11.
An unlock inhibit circuit 150 is provided between the transistor 9 and the transistor 120.

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.

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 and when the driver unlocks all doors by operating the lock knob and interior switch. Signals from the unlock terminal 101b of the indoor switch 101 and the key unlock switch 103 are input to an AND gate 193 via a NOT gate 191, and an output from the lock knob switch 105 is input via a NOT gate 192, respectively. The output of this AND gate 193 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 lock 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, two cases in which the prohibition of unlocking caused by the above-described operation is canceled will be explained.

First, when the driver turns the key cylinder toward the unlock side from outside the vehicle while riding, the key unlock switch 103 is turned on, and at the same time, the lock knob switch 105 is turned on. L of the key unlock switch 103 and L of the lock knob switch 105 are the key unlock detection circuit 190.
is input to the key unlock detection circuit 190.
Outputs the signal. This output is input to R (Reset) of the flip-flop 160, so the output of the flip-flop 160 becomes H, and the unlock inhibited state is released. At the same time, the L of the key unlock switch 102 is input to the unlock system of the actuator drive circuit 130.
All doors are unlocked.

The other method is that the driver turns on the unlock terminal 101b of the indoor switch 101, unlocks the lock knob on the driver's seat, and then turns on the lock knob switch 1.
05 is turned on, and the respective outputs become L and L. Since the key unlock detection circuit 190 outputs H and the flip-flop 160 outputs H, the unlock prohibition circuit 150 cancels the unlock prohibition state and passes the H output of the timer 119 due to the L of the unlock terminal 101b of the indoor switch 101. , all doors will be unlocked.

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. To release this unlocking prohibited state, either perform key unlocking or connect the unlock terminal 101 of the indoor switch 101.
It can be canceled by turning on b and unlocking the lock knob on the driver's seat.

In this embodiment described above, when the key is inserted into the ignition key cylinder, the output of the flip-flop 160 is unconditionally set to H.
A circuit for canceling the unlocking prohibited state may be added. In this way, the unlocking is not prohibited while the driver is riding the vehicle, and the locking/unlocking operation can be performed using the indoor switch 101 without fail.

In addition, AND which is the unlock prohibition means 150
A gate may be provided on the input side of timer 119.

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, the present invention can also be implemented by a microcomputer and its program.

Further, a keyless entry system may be used in the outdoor unlocking switch of the present invention, and the release signal may be generated by the unlocking signal from this keyless entry system.

[Brief explanation of the drawing]

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.
A detailed circuit diagram of the key lock detection circuit 170 shown in FIG.
Figure 4 shows the keyless lock detection circuit 180 of Figure 3.
FIG. 5 is a detailed circuit diagram of the key unlock detection circuit 190 of FIG. 1...Indoor unlock switch, 2...Outdoor unlock switch, 3...Lock knob switch,
4... Unlock device, 5... Release signal generating means, 6... Prohibition signal generating means, 7... Unlock prohibiting means, 8... Interlocking mechanism.

Claims (1)

[Scope of Claims] 1. An indoor unlock switch that is installed inside a vehicle and outputs a predetermined unlock signal; an outdoor unlock switch that is installed outside the vehicle that outputs the unlock signal; and an outdoor unlock switch that outputs the unlock signal. A door locking device for a vehicle includes an unlocking device that operates to unlock a door of the vehicle when a door is inputted, and a prohibition signal generation unit that detects that the door of the vehicle is locked and outputs a predetermined prohibition signal. means interlocked with the outdoor unlock switch via an interlocking mechanism, and configured to perform a predetermined operation when the lock knob mechanically unlocks the door of the vehicle and when the lock knob is interlocked with the outdoor unlock switch by the interlocking mechanism. a lock knob switch that outputs a knob signal; a release signal generating means that outputs a predetermined release signal when the unlock signal and the knob signal are input; and a release signal generating means that outputs a predetermined release signal when the unlock signal and the knob signal are input, and operates the unlock device when the prohibition signal is input. A door lock device for a vehicle, comprising: unlocking prohibiting means for prohibiting the unlocking device, and canceling the prohibition of operation of the unlocking device when the canceling signal is input.