JPH023562A - Theft preventing system for automobile - Google Patents

Abstract

PURPOSE:To make it possible to prevent the unlocking of a door with a false door key, etc. by installing a sensor which detects the insertion of a door key, etc. in a door cylinder lock and actuating an alarm with that output signal and the output signal from an alarm driving means. CONSTITUTION:In a door cylinder lock 100 consisting of a cylindrical outer cylinder 1 and an inner cylinder 2 with a key insertion slit 3, which is pivotally mounted therein, a sensor 6 comprising a photoelectric element, etc. with detects the insertion of a door key 200 or other stuff in the inner cylinder 2 is installed on a hole 4, 4 of the outer cylinder 1. An alarm driving means 12 so constructed to emit a signal for driving an automobile mounted alarm 14 is installed. The means, for an example, consist of a remote controlled transmitter 10 and a receiver 11. When an output signal is emitted from the sensor 6 while an output signal is being emitted form the driving means 12, the alarm 14 is operated by a controlling means 9 to prevent the theft.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to an automobile theft prevention system, and more particularly to an automobile theft prevention system capable of dealing with cases where the door of an automatic vehicle is unlocked and stolen.

(b) Prior Art Conventionally, when the owner (driver) of a vehicle leaves the vehicle to prevent theft, the owner (driver) closes the window glass and locks the vehicle by inserting the door key into the door cylinder lock of the vehicle door.

(c) Problems to be Solved by the Invention However, while the vehicle is parked, a thief inserts a wire or a fake door key into the door key, unlocks the door, and steals the vehicle. 11J They sometimes steal car stereos, car air conditioners, etc. in fil.

Also, recently, people have been stealing not only the car stereo inside the car but also the whole car by unlocking the automatic JII door.
Furthermore, this theft 1111 has been used to cause secondary and heinous incidents such as robbery, kidnapping of children, and traffic accidents.

In view of these problems with conventional car door lock technology, the present invention has been developed so that when a thief attempts to unlock a car door, an alarm is emitted on the unlocking surface of the car door. While the structure is such that an alarm can be triggered simply by inserting a door key or other object into the cylinder lock, the owner of the vehicle or a person authorized by the owner of the vehicle must prepare the alarm driving means and/or device in advance. Another object of the present invention is to provide an automobile theft prevention system in which an alarm is not issued by inserting a door key or other object into the door cylinder lock after turning off the sensor in the door cylinder lock.

(d) Means for Solving the Problems The automatic theft prevention system of the present invention includes a sensor that is attached to a door cylinder lock and detects that a door key or other object has been inserted into the door cylinder lock;
An alarm device that issues an alarm, an alarm drive device that outputs a signal to drive the alarm, and an output signal from the sensor and an output signal from the alarm drive device are input, and based on these output signals, the above-mentioned The above object is achieved by providing the alarm device with a control means for generating an alarm.

The sensor used in the present invention is not particularly limited as long as it can be attached to a door cylinder lock and can detect that a door key or other object is inserted into the door cylinder lock. Examples include an optical sensor having a light-emitting element and a light-receiving element, and a proximity switch such as a limit switch that operates in contact with a door key or other object.

Further, the alarm device used in the present invention is particularly limited as long as it is driven by an alarm signal from a control means that senses an output signal from the above-mentioned sensor and an output signal from an alarm drive means described later. Instead, for example, a horn with a buzzer that generates an abnormal alarm sound, a red light that generates a red light, or a combination of these may be used.

The alarm driving means is not particularly limited as long as it transmits a signal to drive the alarm,
Examples include a remote control transmitter and a signal receiver, a light emitting element and a light receiving element, and a device that transmits a signal to drive the alarm by directly inserting it into a connector provided on the outside of the car body.

Further, the control means is configured to control output signals from the sensor and the alarm when a person (thief) other than the owner of the vehicle or a person authorized by the owner inserts a door key or other object into the door cylinder. It is not particularly limited as long as it has a structure that outputs an alarm signal to the alarm device by detecting the output signal from the driving means and generates an alarm based on this alarm signal. Specifically, when the output signal from the CPU of the computer, that is, the alarm driving means, and the output signal from the above-mentioned sensors are input, based on these output signals, alarm No. 43 is output to the above-mentioned alarm, and the alarm is triggered. It is equipped with a CPU or an AND circuit of logic elements, etc., in which a program for causing the alarm to be generated is stored, and when the output signal from the alarm driving means and the output signal from the sensor are input, A device that outputs an alarm signal to the alarm device to generate an alarm based on the output signal of the alarm device, further comprising a series circuit of a first switch connected to the sensor and a second switch connected to the receiver, Examples include a device in which the output signal from the sensor and the output signal from the receiver are input, and based on these output signals, an alarm signal is output to an alarm device to generate an alarm.

(e) Function According to the present invention, when the driver of the car leaves the desk, the alarm is activated by the sensor and the alarm driving means. When a thief inserts a foreign object into a car's door cylinder lock, the sensor turns on. As a result, the control means causes the alarm to issue an alarm based on the ON state of the alarm driving means and the sensor.

In contrast, a single owner or a person authorized by the owner can manually insert a door key or other object into the door cylinder lock by deactivating the alarm using the sensor and/or alarm driving means. If inserted, the alarm can be prevented from sounding.

(f) Examples Hereinafter, the present invention will be explained in detail based on Examples, but the present invention is not limited thereto.

FIG. 1 is a perspective view of a door cylinder lock of an embodiment of the automobile theft prevention system according to the present invention, and FIG. 2 is a schematic sectional view of the door cylinder lock.

The door cylinder lock 100 consists of a cylindrical outer cylinder 1 and an inner cylinder 2 mounted inside the outer cylinder 1,
The inner sill 2 is removable and has a flat key insertion opening 3 in the center, into which a door key 200 is inserted.

Also, the outer cylinder 1 has holes 4, 4, and the inner cylinder 2 has holes 5, 5, respectively? These holes 4
, 4.5, 5 are configured to communicate with each other to form a through hole X when the door key 200 is not inserted into the inner sill 2.

That is, unless the door key 200 is inserted and turned, the inner cylinder 2 is always positioned at a predetermined position on the outer cylinder 1 due to the biasing force of the spring S, and the inner cylinder is positioned at the predetermined position. 2 is positioned, the holes 4 and 4.5° 5 are arranged in a line with each other to form a through hole X.

Further, a sensor 6 is attached to the hole 4.4 of the outer cylinder 1 to detect whether a door key 200 or other object has been inserted into the door cylinder lock 100, and the sensor 6 will be described in detail below. Explain.

The sensor 6 is, for example, a sensor having a light-emitting element and a light-receiving element, or a proximity switch such as a limit switch that operates in contact with the door key 200 or something else.

To explain in detail the case of an optical sensor among the above-mentioned sensors 6, the optical sensor includes a light emitting diode 61 and a 7-ototransistor 62.

That is, in the outer shell ring 1, a light emitting diode 61 is fitted into one of the holes 4, and a light emitting diode 61 is inserted into the other hole 4.
An autotransistor 62 is inserted. Therefore, when the through hole X is formed, the light emitted from the light emitting diode 61 passes through the through hole X and enters the seven-dimensional transistor 62.

When a limit switch is used as the sensor 6, the switch 63 is installed in the hole 4 of the outer sill 1, as shown in FIG.
is installed so as to slightly face into the hole 5 of the inner cylinder 2.

When the door key 200v is inserted through the key insertion port 3, the door key 200v comes into contact with the contact 63a, and the sensor 6 is turned on and outputs an output signal.

FIG. 4 is a block diagram of an embodiment of an automatic Ilt anti-theft system according to the present invention.

The 7-transistor 62 of the sensor 6 is connected to the base of another transistor. The output of this transistor 7 is connected to a CPU of a computer as an example of a control means 9 via an I10 ink 7 ace 8.

On the other hand, the alarm driving means 12 is a means for transmitting a signal for driving an alarm 14, which will be described later, and includes, for example,
As shown in FIG. 6, the remote control transmitter 10
and a receiver 11. The remote control transmitter 10 is a means for transmitting radio waves at a frequency specific to each vehicle.

The frequency can be shared to some extent with the frequencies of other cars, as long as there is no risk of interference with the frequencies of other cars (for example, by preventing interference through area allocation or other methods).

Note that 101 is an antenna section, 102 is a transmitting section, and 103 is a control section that controls each of these sections.

The receiver 11 is a means for receiving radio waves transmitted from the remote control transmitter 10.

This receiver 11 is set in an automobile.

This receiver 11 via the I10 interface 13,
It is connected to the CPU 9 mentioned above.

Note that this alarm driving means 12 does not necessarily have to be of a remote control type that transmits radio waves; for example, by directly inserting this alarm driving means 12 into a connector provided on the outside of the car body, It may also be something that transmits driving means to an automobile.

In this case, the vehicle owner or a person authorized by the vehicle owner may prevent the drive signal from being generated by re-inserting the alarm drive means 12 into the connector section, or the vehicle owner may insert the alarm drive means 12 into the connector part again to prevent the generation of the drive signal, or the vehicle owner may insert the alarm drive means 12 into the connector part again to prevent the generation of the drive signal. By directly inserting this alarm driving means 12 into the vehicle, a driving signal is transmitted to the computer, and this is stored in the computer. Next, when the vehicle owner or a person authorized by the vehicle owner opens the door, It may be configured to be turned off by remote control.

The alarm 14 is a means such as a buzzer of a car horn that generates an abnormal alarm sound, a red traffic light that generates a red light, or a combination thereof.

The alarm device 14 is connected to the CPU 9 via an I10 interface 15.

A ROM memory 95 is connected to the CPU 9. In the ROM memory 95, when the output signal from the receiver 11 and the output signal from the sensor 6 are input to the CPU 9, the CPU 9 issues an alarm (g) to the alarm device 14 based on these output signals. A program for outputting the - symbol and generating an alarm is stored.

Further, a RAM memory 95 is a writable and readable memory connected to the CPU 9 and used for the operation of the CPU 9.

FIG. 5 is a block diagram of another embodiment of the invention.

In FIG. 5, the control means 9 is equipped with an AND circuit of logic elements, etc., and inputs the signal from the receiver 11 and the signal from the sensor 6, and only when both signals are on, the above-mentioned alarm is activated. It outputs a drive signal to the device 14 and generates an alarm.

FIG. 6 is a block diagram of the control means 9 of still another embodiment of the present invention.

In FIG. In this case as well, the control means 9 inputs the signal from the sensor 6 and the signal from the receiver 11, and only when both signals are on, outputs a drive signal to the alarm 14 to generate an alarm. It is something that makes you

Next, the operation of the above embodiment will be explained.

When the driver leaves the desk, the driver closes the windows and locks the door, and further transmits an alarm driving radio wave signal using the remote control transmitter 10. The radio signal is sent to the receiver 11
and input to the CPU 9.

On the other hand, a thief approaches the car in such a state, inserts a door key or a similar foreign object into the door cylinder lock 100, and attempts to open the door. Since the sensor 6 is attached to the door cylinder lock 100 as described above, the insertion and rotation of the sensor 6 eliminates the penetrating state of the through hole X and blocks light.

As a result, the sensor 6 detects the insertion of the foreign object.

The ON output of the sensor 6 is inputted to the CPU 9 through the I10 ink 7 and base 8. Therefore, the CPU 9 recognizes that the ON signal is input from both the receiver 11 and the sensor 6, and outputs an alarm signal to the alarm device 14. Therefore, even if a thief attempts to open the door with a foreign object,
The alarm buzzer will sound and thieves will not be able to do it. The length of time the buzzer sounds is determined in advance by the CPU 9.
Just set it.

On the other hand, if the driver himself wants to get into the car using the door key, he cancels the alarm drive signal using the remote control transmitter 10 he has. the result,
When the door key is inserted into the shilling 100, an ON signal is output from the sensor 6, but since no alarm drive signal is input from the receiver 11, the CPU 9 does not output an alarm signal to the alarm device 14, so an alarm is issued. No worries.

The AND circuit of the embodiment shown in FIG. 5 and the series circuit of the embodiment shown in FIG. 6 operate in the same manner as the CPU 9 described above.

(g) Effects of the Invention As is clear from the above description, the present invention provides a sensor that detects the insertion of a door key or other object into a door cylinder lock, and an alarm that outputs a signal that drives an alarm. When the sensor and the alarm driving means are in the ON state, the alarm will generate an alarm, so even if a thief tries to open the door of the IIt using a fake door key, the alarm will not be triggered. This has the effect of preventing theft of the car or the car stereo inside the car. On the other hand, when the owner of the vehicle or a person who has received permission to open the door himself/herself opens the door, he or she can deactivate the alarm by operating the alarm driving means in advance, so there is no need to worry about the alarm going off.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a door cylinder lock showing one embodiment of the automobile theft prevention system according to the present invention, Fig. 2 is a sectional view of the door cylinder lock, and Fig. 3 is a door cylinder lock showing another embodiment. FIG. 5 is a block diagram showing another automobile theft prevention system, and FIG. 6 is a block diagram showing still another automobile theft prevention system. DESCRIPTION OF SYMBOLS 1... Outer cylinder, 2... Inner cylinder, 6... Sensor, 9... Control means, 12... Alarm drive means,
14...Alarm, 00...Door door

Claims (1)

[Claims] (1) A sensor attached to a door cylinder lock that detects when a door key or other object is inserted into the door cylinder lock, an alarm that issues an alarm, and an alarm that outputs a signal to drive the alarm and control means for inputting the output signal of the sensor and the output signal from the alarm driving means and causing the alarm to generate an alarm based on these output signals. Car anti-theft system.