JPH02157381A - Door lock device for vehicle - Google Patents

Abstract

PURPOSE:To perfectly and surely prevent to forget operation of a door locking device by automatically making the door lock device to be in locking condition at wearing a seat belt. CONSTITUTION:A seat belt buckle switch 20 is provided to generate a wearing signal S1 when the seat belt of a driver's seat is worn, and the switch 20 is connected to the input terminal of the AND circuit 21 in a control unit 7. A drive's seat door switch 22 provided on the door at the driver' seat is connected to another input terminal of the AND circuit 21. In the above-stated constitution, when the lock device is in unlock condition, the doors of all seats are closed, and additionally the seat belt is worn, locking motion in the lock device is automatically performed after a prescribed time. Consequently, in the door lock device of a vehicle in this invention, forgetting to operate the door lock device can be perfectly prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a vehicle door lock device, and more particularly, to a vehicle door lock device in which a lock device provided on each door of a vehicle can be operated by an actuator. This invention relates to a locking device.

(Prior Art) As described above, a mechanism in which a lock device provided on each door of a vehicle can be operated by an actuator is usually called a power door lock mechanism. In the door lock device equipped with this power door lock mechanism,
In order to enable the driver's seat to operate the door locks on the passenger seat and rear seats, or to prevent people from forgetting to lock the door locks on the passenger seat, etc., the locked state of all doors is the same as the locked state of the driver's seat. A method has been proposed in which this is the case (see Japanese Utility Model Application Publication No. 62-99775).

However, as mentioned above, even if the lock status of all doors is the same as the lock status of the driver's seat to prevent people from forgetting to lock the doors of the passenger seat, etc., the lock of the driver's seat door is When the door is unlocked, the doors of other seats are also unlocked, and therefore, the above-mentioned conventional device cannot completely prevent people from forgetting to lock their doors.

Therefore, a mechanism has been proposed that automatically locks all the doors when the doors of all the seats are closed and the vehicle speed is above a certain speed.

(Problem to be Solved by the Invention) In the case of this vehicle speed-sensitive door lock device, it is possible to completely prevent the door from being forgotten, but the vehicle speed sensor and the signal from the vehicle speed sensor are There is a problem in that a processing circuit is required and the cost is high.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a vehicle door locking device that has a low cost mechanism and can reliably prevent the door from being forgotten.

(Means for Solving the Problems) The present invention is a vehicle door lock device in which a lock device provided on each door of the vehicle is actuated by an actuator, which detects the wearing of a seat belt and outputs a wearing signal. The present invention is characterized by comprising a belt attachment sensor and a control means that operates the actuator to lock the locking device of each door when receiving the attachment signal from the belt attachment sensor.

(Operations and Effects of the Invention) As described above, in the vehicle door lock device of the present invention, by wearing the seat belt, which is absolutely necessary,
Since the door lock device is automatically locked, it is possible to completely and reliably prevent forgetting to lock the door lock device. Moreover, only a few simple parts such as a belt attachment sensor are required. Since it can be configured by simply adding the above to a conventional device, the cost is also extremely low.

(Embodiments) Hereinafter, a vehicle door lock device according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a circuit diagram of a vehicle door lock device according to an embodiment of the present invention, and FIG. 2 is a plan view of the vehicle showing the arrangement of parts of the door lock device.

In the figure, symbols 1.2.3.4 are the driver's seat,
Passenger seat, rear seat right, rear seat left doors D11D2, D3, D
This motor 1.2.3.4 is connected to a power supply 6, which is a power source, through a door lock/unlock relay 5. The door lock/unlock relay 5 transmits current from the battery 6 to the motor 1.2.3.4 in either the forward or reverse direction by switching the contacts.
The motor 1, 2, 3, 4 is rotated in the forward direction or in the reverse direction. When these motors 1.2.3.4 rotate in the forward direction, the locking device is directed towards the locked state, while when rotating in the reverse direction, the locking device is directed towards the unlocked state.

The door lock/unlock relay 5 is connected to a control unit 7 that is implemented by, for example, a microcomputer. The control unit 7 is connected to a keyless switch 8, a main switch 9, a door link switch 10 on the driver's side door, a passenger seat lock link switch 11, and a door key unlock switch 12. Upon receiving the output signal from the switch, the connection state of the contact of the door lock/unlock relay 5 is switched in accordance with the output signal, and thereby the motor 1.2.3 is activated as described above.
．． 4 is rotated forward or reverse to lock or unlock the locking device.

For example, when the lock side switch of the main switch 9 is on, or when the door side lock link switch 10 is on, the lock side relay of the door lock/unlock relay 5 is turned on, and the motors 1.2.3. A current is applied in the forward direction to the motors 1, 2, 3, and 4 to rotate them in the normal direction, thereby locking the locking devices of the doors of all seats. Since the structure described above and its operation are conventionally known, further detailed explanation will be omitted.

If the door lock device has a simple structure and function, as described above, there is a possibility that the door lock device may be forgotten to be engaged.

Therefore, in the present invention, the locking device is automatically locked by attaching the sorting belt.

Therefore, as shown in FIG. 2, the door lock device according to the embodiment of the present invention includes a seat belt buckle switch 20 that generates a fastening signal Sl when the driver's seat belt is fastened. . This seat belt buckle switch 20 is connected to an input terminal of an AND circuit 21 in the control unit 7, and the other input terminal of this AND circuit 21 is connected to a driver's seat provided at the door DI of the driver's seat. A seat door switch 22 is connected.

The output terminal of the AND circuit 21 is connected to the second AND circuit 23.
The other input terminal of this second AND circuit 23 is connected to one input terminal of the second AND circuit 23, and the other input terminal of the second AND circuit 23 is provided at each door D2, D3, D4 of the front passenger seat, right rear seat, and left rear seat, and is arranged in parallel. The passenger seat door switch 24, the rear seat right door switch 25, and the rear seat left door switch 26 are connected.

The door switches 22, 24, 25, and 26 are grounded, and when the corresponding door is closed, they are turned off, that is, opened, and output a high signal indicating that the door is closed. The passenger door switch 24, the rear right door switch 25, and the rear left door switch 26 are connected in parallel as described above, but when any door is open, the ground For this reason, even if another door is closed and its door switch is off, the input signal to the second AND circuit 23 will not go high. In other words, door switch 22.24
．． 25 and 26 are all off, the input signal will not go high.

With the above configuration, when all the doors are closed and the sorting belt is attached, the second AND circuit 23 outputs a high signal. This high (word) is used as a signal to turn on the lock side relay of the door lock/unlock relay 5.

The output terminal of the second AND circuit 1a23 is connected to the delay circuit 27.
Therefore, the actual locking operation of the locking device is performed several tens of seconds after the output of the AND circuit 23 becomes high, that is, after the time T1 shown in FIG. 3 has elapsed. It is becoming more and more popular. This means that if the delay circuit described above does not exist, and all doors are closed when the driver takes the driver's seat and puts on the sorting belt,
This is because the door is automatically rotated, which is inconvenient when there are people sitting in other seats.

The relationship between the operation of the door rotor and the output signals of each of the switches is shown in the time chart of FIG.

The control unit 7 is also provided with a timer 28, and when the locking device is unlocked using the main switch 9 or the like, the timer 28
After a predetermined time period, that is, time T2 shown in FIG. 3, has elapsed, the seat belt locking device is activated. This means that when the lock device is in the locked state due to the wearing of the seat belt, even if the lock device is in the unlocked state with the main switch 9,
This is because it may return to the locked state immediately and be of no use.

In the above configuration, when the locking device is in the unlocked state, when the doors of all seats are closed and the seat belts are fastened, the locking operation of the locking device is automatically performed after a predetermined period of time. Therefore, in the vehicle door lock device of the present invention, forgetting to lock the lock device can be completely prevented.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram of a vehicle door lock device according to an embodiment of the present invention, FIG. 2 is a plan view of a vehicle showing the arrangement of parts of the door lock device, and FIG. 3 is a circuit diagram of a vehicle door lock device according to an embodiment of the present invention. FIG. 3 is a time chart showing the relationship between the operation of various switches and the operation of a door lock/unlock relay. ■, 2.3.4 Motor 5 Door lock/unlock relay 7 Control unit

Claims (1)

[Claims] In a vehicle door lock device in which a lock device provided on each door of the vehicle is actuated by an actuator, a belt wearing sensor detects the wearing of a seat belt and outputs a wearing signal, and the belt wearing sensor outputs the wearing signal. A door locking device for a vehicle, comprising: control means for activating the actuator to lock the locking device of each door when the locking device receives a door lock.