JPH0446038Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a door lock device for a vehicle, and in particular, it can be used not only for a key lock device but also for unlocking a vehicle door by an electromagnetic door lock switch even after the vehicle door is locked by a keyless lock device. This invention relates to a vehicle door lock device that completely prevents vehicle theft.

[Conventional technology]

To lock and unlock car doors, cars generally have a key lock device that closes the door and then locks it with the key, and a device that locks the door with an electromagnetic door lock switch with the door open and then pulls the outside handle. It is equipped with a keyless lock device that allows you to close the door while the door is closed. This electromagnetic door lock switch is always in operation mode regardless of whether the ignition key is turned on or off. For this reason, conventionally, the electromagnetic door lock switch could be operated from inside the vehicle or from outside when the vehicle is stopped. Therefore, the ignition key is OFF
All doors could be unlocked by forcefully prying open the windshield of a parked vehicle, inserting a stick, etc., and pressing the unlock button on the electromagnetic door lock switch. In this way, there was a problem that the vehicle could be stolen.

In order to solve this problem, a vehicle door lock device has been proposed which is provided with means for opening the circuit of an electromagnetic door lock switch when the door is locked by a key lock device. According to this, since the door can only be unlocked with the door key after it has been locked, it is possible to prevent theft by inserting a stick or the like and pressing the unlock button of the electromagnetic door lock switch to unlock the door.

[Problem that the invention attempts to solve]

However, in the above-mentioned vehicle door lock device, the electromagnetic door lock switch remains closed after the door is locked by the keyless lock device, and theft cannot be prevented. Therefore, the driver accidentally locked the door with the keyless lock device instead of the door key, or the driver happened to be the driver who did not know that the door cannot be prevented from being stolen unless the door is locked with the key, so the driver accidentally locked the door with the keyless lock device. If this happens, theft prevention will not be effective. locking car doors,
Since a key lock device and a keyless lock device are generally installed as means for unlocking, it would be a mistake to say that only the former type of locking can prevent theft.

This invention aims to solve this problem,
To provide a vehicle door lock device which can prevent theft not only when the door is locked with a key but also when the door is locked with a keyless lock device, and which can completely prevent theft.

[Means for solving problems]

The present invention has a configuration in which the circuit of the electromagnetic door lock switch is closed even in the case of a keyless lock. An electromagnetic door lock switch comprising: a key lock device for causing a mechanism to perform the locking and unlocking operations; a lock button for instructing the electromagnetic door lock mechanism to lock; and an unlock button for instructing the electromagnetic door lock mechanism to unlock; An unlock cut switch that opens and closes at least a circuit of the unlock button among the circuits of the switch, an unlock cut switch that opens and closes at least a circuit of the unlock button, a key lock device that locks and unlocks the door by the electromagnetic door lock switch, and a keyless lock device that locks and unlocks the electromagnetic door. a detection means for respectively detecting that the locking operation is performed by the lock switch; and when the detection means detects the locking operation by the key lock device or keyless lock device, the circuit is opened, and the unlocking operation by the key lock device is performed. and a control means for respectively instructing the unlock cut switch to close the opened circuit when detecting the opened circuit.

[Effect]

According to the above means, when the detection means detects the fact that the door is locked by a key lock device or a keyless lock device, the control means opens at least a circuit of an unlock button among the circuits of the electromagnetic door lock switch. instruct. In response to this, the unlock cut switch opens at least the circuit of the unlock button among the circuits of the electromagnetic door lock switch.
As a result, even if the unlock button of the electromagnetic door lock switch is pressed, the electromagnetic door lock mechanism does not perform an unlocking operation.

On the other hand, when the door is locked, if an unlocking operation is instructed by the key lock device, the electromagnetic door locking mechanism performs the unlocking operation and the door is unlocked. When the detection means detects that an unlocking operation has been performed by the key lock device, the control means instructs the unlock cut switch to close the opened circuit. In response to this, the unlock cutoff switch closes the opened circuit of the electromagnetic door lock switch, and the electromagnetic door lock switch can thereafter be locked.

〔Example〕

Hereinafter, one embodiment of a vehicle door lock device according to the present invention will be described with reference to the drawings.

FIG. 1 is a circuit diagram showing an embodiment of the present invention. 8 in the figure is an electromagnetic door lock mechanism for locking and unlocking the vehicle door. A key lock device (not shown) is provided on the door of the vehicle, and the door key causes the electromagnetic door lock mechanism 8 to perform locking and unlocking operations. Reference numeral 1 denotes an electromagnetic door lock switch disposed inside the door of the vehicle, and includes a lock button 2 for instructing an electromagnetic door lock mechanism 8 to lock, and an unlock button 3 for instructing to unlock the door. 6
is an unlock cut switch that opens and closes the circuit of the unlock button 3, and in this embodiment, the control unit 5
It is set in. A terminal 3a of the unlock button 3 is connected to a door lock control relay 7 via an unlock cut switch 6, and a terminal 2a of the lock button 2 is directly connected to the door lock control relay 7. The other terminals 2b, 3b of these buttons 2, 3 are connected to their respective ground sides. The operation of the electromagnetic door lock switch 1 causes the electromagnetic door lock mechanism 8 to lock and unlock the door via the door lock control relay 7. A door opening/closing detection switch 9 to a key lock detection switch 12 are connected to the control section 5, respectively. In this embodiment, these detection switches are used as the detection means of the present invention. That is, these detection switches have the function of detecting means for detecting locking and unlocking operations by a key lock device (not shown) and locking operations by a keyless lock device. Door open/close detection switch 9
detects the opening and closing of the door, the door lock detection switch 10 detects whether the door is locked or unlocked, and the key unlock detection switch 11 detects whether the door is locked or unlocked.
The door was unlocked with the key (key unlock)
The key lock detection switch 12 detects that the door is locked with the key (key lock).
The control unit 5 opens the circuit of the unlock button 3 when it is determined that the door opening/closing detection means switch 9 to the key lock detection switch 12, which are detection means, have detected a locking operation by a key lock device or a keyless lock device (not shown). When it is determined that an unlocking operation by a key lock device (not shown) has been detected, it functions as a control means for instructing each unlock cut switch 6 to close the circuit of the opened unlock button 3.

Next, the operation of the vehicle door lock device according to this embodiment will be explained with reference to the flowchart shown in FIG. The driver gets out of the vehicle and locks the door using either a key lock device or a keyless lock device. This state is detected by the door opening/closing detection switch 9.
It is detected by the door lock detection switch 10 and the key lock detection switch 12 and judged by the control section 5. First, if the door opening/closing detection switch 9 is OFF, it means that the door is closed, and the key lock detection switch 12 is OFF.
If is ON, it means that a signal indicating that a key lock has been performed has been detected. That is, since locking by the key lock device is performed by first closing the door and locking the key, this is the detection of locking by the key lock device. Next, after detecting that the door open/close detection switch 9 is ON, that is, that the door is open, and that the door lock detection switch 10 is ON, that is, that the door is locked, the door lock detection switch 10 is turned ON, that is, that the door is not locked. If it is detected simultaneously that the door is closed and the door opening/closing detection switch 9 is OFF, that is, the door is closed, it is detected that the keyless lock device is locked. To lock the door using a keyless lock device, first press the lock button 3 on the electromagnetic door lock switch 1 with the door open to lock the door, then close the door while pulling the outside handle of the door. This is because the electromagnetic door lock mechanism 8 locks the door. When the control unit 5 determines that locking has been performed using a key lock device or a keyless lock device (not shown) as described above, the control unit 5 causes the unlock cut switch 6 to press the unlock button 3. An instruction is given to open the circuit, and in response to this, the unlock cut switch 6 is turned OFF, and the circuit of the unlock button 3 is opened. After that, unlock button 3
Since the circuit is open, the door cannot be unlocked even if the unlock button 3 inside the locked vehicle is pressed in some way. Therefore, even when the vehicle is locked not only with a key lock device but also with a keyless lock device, it is possible to prevent the vehicle from being stolen, thereby making it possible to completely prevent the vehicle from being stolen. Note that even if each detection switch detects a signal different from the above-mentioned signal, the control unit 5 does not determine that the door is locked by a key lock device or a keyless lock device (not shown).
The unlock button 3 circuit is not opened. Therefore, even if the driver inside the vehicle presses the lock button 2 to lock the door with the door closed, the driver can still unlock the door by pressing the unlock button 3 inside the vehicle.

The only way to unlock a vehicle whose doors have been locked in the manner described above is to use a key lock device. Therefore, when the driver unlocks the door using the door key, the key unlock detection switch 1 is activated.
1 detects unlocking with the door key, the control unit 5 determines that unlocking with the door key is detected, and instructs the unlock cut switch 6 to close the circuit of the unlock button 3. In response to this, the unlock cut switch 6 is turned ON and the circuit of the unlock cut switch 6 is closed, so that the unlock button 3 will also operate from now on.

[Effects of the invention] As described above, according to the invention, even when the door is locked not only by a key lock device but also by a keyless lock device, at least the unlock button circuit of the electromagnetic door lock switch circuit is opened. Therefore, even if you forcefully pry open the window of a parked vehicle using a screwdriver or other tool, insert a stick, etc., and press the unlock button on the electromagnetic door lock switch, the door will not unlock.

Generally, a key lock device and a keyless lock device are installed as means for locking and unlocking automobile doors, so if the door can only be unlocked with the door key no matter which device it is locked with, the conventional method is In some cases, the driver accidentally locks the door with a keyless lock device instead of the door key, or the driver happens to be the driver who does not know that the door cannot be prevented from being stolen unless the door is locked with the key. Since the vehicle is locked, there will be no chance of accidental vehicle theft. Therefore, the driver
There is no need to worry about having to lock the key to prevent vehicle theft. Also,
When you let someone else drive your car, even if that person is using the car for the first time, you no longer have to worry about having to remind them to lock the key when parking. In this way,
The present invention makes it possible to completely prevent vehicle theft.

[Brief explanation of drawings]

FIG. 1 is a circuit diagram showing an embodiment of a vehicle door lock device according to the present invention, and FIG. 2 is a flowchart showing the operation of this embodiment. 1... Electromagnetic door lock switch, 6... Unlock cut switch, 8... Electromagnetic door lock mechanism.

Claims (1)

[Scope of Claim for Utility Model Registration] An electromagnetic door lock mechanism for locking and unlocking a vehicle door; a key lock device for causing the electromagnetic door lock mechanism to perform the locking and unlocking operations using a door key; and a locking device for the electromagnetic door lock mechanism. an electromagnetic door lock switch comprising a lock button for instructing the lock button and an unlock button for instructing the unlock button; an unlock cut switch for opening and closing at least a circuit of the unlock button among the circuits of the electromagnetic door lock switch; Detection means for detecting, respectively, that the locking and unlocking operations are performed by the electromagnetic door lock switch in a key lock device, and that the locking operations are performed by the electromagnetic door lock switch in a keyless lock device; the unlock cut switch to open the circuit when detecting the locking operation by the key lock device or the keyless lock device, and close the opened circuit when detecting the unlock operation by the key lock device; A vehicle door lock device comprising control means for giving respective instructions.