Patent ID: 7781906

Claim:
A burglarproof device of a vehicle, comprising: an ignition switch to be operated by a passenger of the vehicle; a vehicle-stop-state detecting device operative to detect a stop state of the vehicle; a power supply device operative to supply a power to the vehicle-stop-state detecting device for operating the vehicle-stop-state detecting device when the ignition switch is in an ON state; a door-state detecting device operative to detect a state of a vehicle door; a lock member operative to engage with a movable member associated with a steering operation for taking a steering lock state and disengage from the movable member for taking a steering unlock state; a steering-lock actuator operative to drive the lock member such that the lock member selectively takes the steering lock state or the steering unlock state; and a drive control device operative to control a drive of the steering-lock actuator, wherein said drive control device is configured so as to control the drive of the steering-lock actuator such that the lock member takes the steering lock state from the steering unlock state if there occurs a change in the state of the vehicle door detected by the door-state detecting device and the stop state of the vehicle is detected by the vehicle-stop-state detecting device when the ignition switch is in an OFF state, and said power supply device is configured such that a power supply to the vehicle-stop-state detecting device thereby stops if the ignition switch is turned to the OFF state from the ON state, and that the power supply to the vehicle-stop-state detecting device resumes if there occurs the change in the state of the vehicle door detected by the door-state detecting device when the ignition switch is in the OFF state.