JPH0351496Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to an automobile equipped with an anti-theft device.

(Prior art) Conventionally, as an anti-theft device for automobiles,
As disclosed in Publication No. 60-50053, a controller comprising a CPU or the like determines whether or not an opening/closing body such as a door is unlocked by operating a key inserted into a key cylinder, A device is known that issues an alarm when the lock is unlocked by a key operation other than the above. Then, by inputting the opening/closing signals of each switch provided corresponding to each opening/closing body of the door, hood, trunk, key cylinder for locking the opening/closing body, ignition cylinder, etc. to the above-mentioned controller, The operating state of the anti-theft device is configured to be set.

Here, the operation of a conventional general anti-theft device will be explained below. Remove the key from the ignition key cylinder and open at least one door with all door, hood, and trunk openings closed. From this state, each opening/closing body is closed and locked in sequence, and when the last door to be closed is locked by operating the lock knob, the anti-theft device is set to the alert state after a predetermined period of time, while the last door to be closed is locked by pressing the key. If you operate it and lock it, it will not be set to alert state. When this anti-theft device is set to the alert state, an alarm will be issued if the opening/closing body is unlocked by anything other than key insertion, and an alarm will be issued if the opening/closing body is unlocked by key operation. The alert state is canceled without being issued.

Further, automobiles equipped with an anti-theft device are generally equipped with a security lamp (display means) that displays a predetermined state of operation of the anti-theft device. For example, when the doors, hood, and trunk opening/closing bodies are all closed and at least one door is opened, the anti-theft device is activated to alert the occupant who is about to leave the vehicle. This security lamp is configured to blink to remind you whether to set the Additionally, when the door is locked by operating the lock knob, the security lamp changes from flashing to continuously lighting to notify that the anti-theft device has been set to the alert state; on the other hand, when the door is locked by operating the key, In some cases, the light is configured to change from flashing to extinguishing.

(Problem to be solved by the invention) In a car with an anti-theft device configured as described above, in order to detect that the opening/closing body is unlocked by key operation, a key is inserted into the key cylinder and the lock is turned in the unlock direction. A key cylinder switch is required that activates when turned to , detects this condition, and sends a signal to the controller. Therefore, if the key cylinder switch does not operate properly, the anti-theft device will not operate properly, and even if the opening/closing body is unlocked by key operation, the alert state will not be canceled and the alarm will not be issued. This may cause problems such as being lost. Therefore, it is necessary to check whether this key cylinder switch operates normally.

Conventionally, in order to check the function of the key cylinder switch in advance, each time the function of the key cylinder switch for one opening/closing body is checked, the anti-theft device is put into the alert state for a predetermined period of time as described above. I had to set the key to the key cylinder, insert the key into the key cylinder, turn it in the unlock direction, and then make a judgment based on whether or not the alarm was activated, which took a lot of time. In addition, if you try to check the function of the key cylinder switch by other methods, for example, if you use a special checker such as a tester, you will have to disassemble the door.
When the external circuit is changed to add a check function to the key cylinder switch, there is a problem in that a check coupler must be added accordingly.

The present invention has been devised in view of the above-mentioned conventional problems, and an object of the present invention is to enable easy checking of the key cylinder switch with a simple structure.

(Means for Solving the Problem) In order to achieve the above object, the solution of the present invention has a key cylinder switch that detects the operating position of the key cylinder, and the unlocking of an opening/closing body such as a door is performed using the above-mentioned key. an anti-theft device that determines whether or not the lock has been unlocked by operating a key inserted into the cylinder, and issues an alarm when the lock is unlocked by a key operation other than the above-mentioned key operation;
The present invention is based on an automobile equipped with an anti-theft device and a display means for displaying a predetermined state of operation of the anti-theft device. The key cylinder switch is connected to a power source via the display means to form a circuit that displays the operating state of the key cylinder switch by the display means during normal operation of the key cylinder. .

(Function) As a result, in the present invention, the operating state of the key cylinder switch is changed during normal operation of the key cylinder.
Since the predetermined state of operation of the anti-theft device is displayed on the display means, it is possible to easily determine whether the key cylinder switch is operating normally or not using the display means.

(Effects of the invention) Since the present invention is constructed as described above, it is not necessary to set the anti-theft device to the alert state.
Whenever a key is operated, whether or not the key cylinder switch is operating normally is displayed on the display means using the existing display means provided for displaying a predetermined state of operation of the anti-theft device. Since the key cylinder switch function can be checked in a short period of time without requiring a dedicated checker or the addition of a coupler due to a change in the external circuit, it is possible to check the function of the key cylinder switch quickly and reliably.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

In the figure, a controller 2 consisting of a CPU or the like is provided in a control box 1 provided at the bottom of the passenger seat. The controller 2 is connected to the + terminal of the battery 3 and operates,
The controller 2 receives the opening/closing signals of switches provided corresponding to the door, hood opening/closing body, door locking key cylinder, ignition key cylinder, etc.
The operating state of the anti-theft device is set by inputting the information to the key cylinder (note that the state of circuit connection with other opening/closing switches other than the opening/closing switch of the door locking key cylinder is not illustrated here). That is,
Remove the key from the ignition key and open at least one door with each opening/closing body fully closed. From this state, all the doors are closed and locked in sequence, and when the last door to be closed is locked by operating the lock knob, the anti-theft device will be set after a predetermined period of time (35 seconds), and the last door to be closed will be locked. It is configured so that the alarm state is not set when the key is operated to lock the door. When the anti-theft device is set to the alert state, if the opening/closing body is unlocked by a method other than key operation, an alarm is issued via an alarm means (not shown), and the opening/closing body is unlocked by key operation. The system is configured so that when the door is unlocked, the alert state is canceled without issuing an alarm.
Here, a key cylinder switch 4 serving as an opening/closing switch for a door locking key cylinder has one end connected to the controller 2 via a diode 5 and the other end grounded. Here, 4a, 4
Numerals b and 4c are key cylinder switches attached to the right door, left door, and back door, respectively, which are turned on only when the key cylinders are turned to the unlocking side with the respective keys. The security lamp 6 indicates a predetermined state of operation of the anti-theft device. The security lamp 6 has one end connected to a transistor 7 whose base is connected to the controller 2 and whose emitter is grounded, and the other end is connected to the positive terminal of the battery 3.
connected to the terminal. When at least one door is opened from the fully closed state of the opening/closing body described above, the security lamp 6 flashes to prompt the occupant to set the anti-theft device to the alert state, and the door lock knob is operated. When the door is locked, the security lamp 6 changes from flashing to continuously lit state and turns off after a predetermined period of time (10 seconds) to notify that the anti-theft device has been set to the alert state. , the light changes from flashing to extinguishing.

Further, the key cylinder switch 4 and the security lamp 6 are connected via a diode 8. With this configuration, when the key is inserted into the key cylinder and rotated to the unlock side, if the key cylinder switch 4 operates normally, a current flows between the battery 3 and the key cylinder switch 4, and the security lamp 6 lights up. However, if the key cylinder switch 4 is broken, the security lamp 6 will remain lit even if the key is inserted into the key cylinder and turned in the unlock direction.
does not light up. This makes it possible to determine whether the switches 4a, 4b, and 4c of the key cylinder are operating normally.

As described above, by using the existing display means of the security lamp 6 which displays the predetermined state of operation of the anti-theft device, it is possible to check at any time whether the key cylinder switch 4 is operating normally or not. The simple operation of inserting the lock and rotating it toward the unlocking side allows you to check quickly and reliably. In addition, in the above example,
The security lamp 6 is explained as a flashing display when at least one opening/closing body is opened from a state where each opening/closing body such as a door is fully closed, and a continuous lighting display when the door is locked by operating the lock knob. However, it is not limited to this,
Of course, it may also be used to display a predetermined state of operation of another anti-theft device.

[Brief explanation of drawings]

The figure is a circuit diagram showing an embodiment of the present invention. 2...Controller, 3...Battery (power supply),
4...Key cylinder switch, 6...Security lamp (display means).

Claims (1)

[Claim for Utility Model Registration] Whether or not the device has a key cylinder switch that detects the operating position of the key cylinder, and whether or not an opening/closing body such as a door is unlocked by operating a key inserted into the key cylinder. An automobile equipped with an anti-theft device, which is equipped with an anti-theft device that determines whether the key cylinder is unlocked and issues an alarm when the lock is unlocked by a method other than key operation, and a display means that displays a predetermined state of operation of the anti-theft device. An anti-theft device characterized in that the switch is connected to a power source through the display means to form a circuit that displays the operating state of the key cylinder switch by the display means during normal operation of the key cylinder. car with.