| 摘要 |
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. |
