KR20040098701A - Anti-theft apparatus for automobile - Google Patents

Abstract

PURPOSE: An anti-theft apparatus for a vehicle is provided to prevent an engine from being started by cutting off fuel supplied to an injector in a watch mode. CONSTITUTION: An anti-theft apparatus for a vehicle is composed of a line opening/closing unit(30), a control unit(40), a transmitter(50) adjusted by a driver and transmitting a control signal to the control unit, and an alarm unit(45) receiving a signal from the control unit and sounding an alarm. The line opening/closing unit includes a housing(39) installed at a fuel supply line(15) connecting a fuel tank(10) to an injector(20), a movable block(33) installed elastically at one side of the inside of the housing by an elastic spring(37) and having a connecting hole(35), and a solenoid(31) installed at the other side of the inside of the housing. The solenoid moves the movable block, and connects the connecting hole to the fuel supply line, selectively. The control unit supplies the current of a battery(41) to the solenoid selectively according to the control signal received from the transmitter.

Description

Anti-theft apparatus for automobiles

The present invention relates to a vehicle antitheft device, and more particularly, by receiving the necessary control signal from a transmitter operated by a driver, selectively stopping the fuel supplied from the fuel tank to the injector, thereby preventing starting itself. The present invention relates to a vehicle antitheft device that can prevent theft of the vehicle more actively.

In recent years, interest in the prevention of theft of vehicles is increasing day by day, and anti-theft devices are installed in small and medium-sized cars as well as small cars. Such an anti-theft device was initially controlled by an electronic control unit (ECU), which oversees electronic control of the vehicle, and, as its function becomes more complex, an electronic control alarm system that oversees the timer or alarm function of the vehicle ( Electronic Time Alarm Control System (ETACS) (hereinafter referred to as "alarm system") is installed separately to control theft prevention of the vehicle.

The conventional antitheft device by this alarm system operates as follows. That is, when the driver transmits a lock signal to the alarm system through a transmitter operated by the driver, the alarm system activates the arming mode. Operation of this alert mode is only possible by the transmitter operated by the driver. If a third party shows signs of theft, such as opening a door or trunk while in alert mode, the alarm system activates a siren or horn to alert the outside to prevent theft. On the other hand, when the driver wants to board the vehicle, the transmitter transmits an unlock signal to the alarm system through the transmitter, and the alarm system operates the disarming mode to switch the vehicle into a driving state.

Another anti-theft device is an immobilizer system, which prevents vehicle theft by communicating the encryption code of the key and the electronic control unit (ECU) with each other.

However, the anti-theft device by such an alarm system or an immobilizer system has a problem that it cannot completely prevent theft because the method is passive. That is, when the door is opened after cutting the wires of the siren or the horn or removing the battery, or even if the siren or the horn is operated, if the vehicle is forced to start by escaping the vehicle, the theft of the vehicle cannot be substantially prevented. Therefore, there is a need to develop a device that can prevent theft of the vehicle more actively than the passive method.

The present invention has been proposed to solve this problem, the line opening and closing portion is installed on the fuel supply line connecting the fuel tank and the injector, by operating the line opening and closing in accordance with the control signal transmitted from the transmitter operated by the driver Provide an anti-theft device configured to selectively open and close the fuel supply line, and prevent theft of the vehicle more actively by blocking the fuel supply to the injector so that the vehicle does not start itself when the alert mode is set by the driver The purpose is to make it possible.

In addition, it is another object to provide a device capable of preventing theft even more completely is configured to operate a conventional alarm such as siren or horn.

1 is a block diagram of an anti-theft device for a vehicle according to the present invention.

2a and 2b is an operating state of the vehicle anti-theft device according to the invention.

※ Explanation of symbols about main part of drawing ※

10: fuel tank 15: fuel supply line

20: injector 30: line opening and closing

31: solenoid 33: movable block

35: communication hole 37: elastic spring

40: control unit 41: battery

43: receiver 45: alarm

50: transmitter

An anti-theft device for a vehicle according to the present invention for achieving the above object has the following technical features.

A housing provided on a fuel supply line connecting the fuel tank and the injector, a movable block elastically installed at one inner side of the housing by an elastic spring and having a communication hole formed therein, and installed at the other inner side of the housing, A line opening and closing portion composed of a solenoid moving to selectively match the communication hole to the fuel supply line; A controller selectively supplying current supplied from the battery to the solenoid according to the received control signal; And a transmitter which is operated by the driver and transmits a necessary control signal to the controller.

In addition, it is preferable to further include an alarm operated by receiving a signal from the control unit.

Hereinafter, a preferred embodiment of an anti-theft device for a vehicle according to the present invention will be described with reference to the accompanying drawings.

1 is a block diagram of an anti-theft device for a vehicle according to the present invention.

The anti-theft device for a vehicle according to the present invention largely includes a line opening and closing portion 30 provided on a fuel supply line 15 connecting the fuel tank 10 and the injector 20, and the fuel by the line opening and closing portion 30. Control unit 40 for controlling the opening and closing operation of the supply line 15 and the transmitter 50 is operated by the driver to transmit the control signal required for the control unit 40.

The line opening and closing part 30 is provided with a housing 39 on a fuel supply line 15 through which fuel is supplied from the fuel tank 10 to the injector 20, and the housing 39 is elastic at one side thereof. The movable block 35 elastically installed by the spring 37 is provided. This movable block 35 is forcibly made because it must be moved by the magnetic force generated in the solenoid 31 to be described later. In addition, the movable block 35 has a communication hole 35 formed therein, and when the communication hole 35 coincides with the supply line 15, the movable block 35 moves from the fuel tank 10 to the injector 20. Fuel is supplied.

Meanwhile, the solenoid 31 is installed at the other inner side of the housing 39. When a current is supplied to the solenoid 31, a magnetic force is generated, and the movable block 33 is moved by this magnetic force. When the movable block 33 is moved by the solenoid 31 so that the communication hole 35 formed in the movable block 33 coincides with the fuel supply line 15, the entire line is in communication with the injector from the fuel tank 10. Fuel is supplied to 20. In this way, the solenoid 31 generates the necessary power so that the movable block 33 can serve as a valve for opening and closing the fuel supply line 15.

The controller 40 selectively supplies a current required for the solenoid 31 to generate magnetic force. The controller 40 may be an electronic control unit (ECU) of the vehicle or an alarm system (ETACS). In addition, it may be a separate control chip for controlling only the anti-theft device according to the present invention. However, in order to increase the prevention effect by installing the anti-theft device according to the present invention in parallel to the anti-theft device by the conventional alarm system, it is preferable that the alarm system is the control unit 40. Since this alarm system is a programmable universal control chip, if the program is modified to supply current to the solenoid 31 by using a pin that is not used in the existing alarm system, the controller 40 can easily serve as a control unit 40. can do.

On the other hand, the control unit 40 is connected to the battery 41 mounted on the vehicle, the battery 41 supplies a current required to operate the solenoid 31. The control unit 40 is provided with a receiver 43, which detects a control signal transmitted from the transmitter 50 and inputs it to the control unit 40. In addition, the control unit 40 is provided with an alarm 45, the alarm 45 may be a siren or horn used in the conventional anti-theft device.

The transmitter 50 is operated by the driver to transmit a control signal to the control unit 40, and is made in a form that the driver can always carry. The control signal transmitted from the transmitter 50 is a lock signal used to switch the vehicle to the arming mode after the driver gets off and a release mode (when the driver wants to board the vehicle again). There is an unlock signal that switches to disarming.

The operation of the anti-theft device for a vehicle according to the present invention having the above-described technical configuration will be described with reference to Figs. 2A and 2B showing an operating state of the present invention.

FIG. 2A shows a state in which fuel is supplied from the fuel tank 10 to the injector 20 by coinciding with the communication hole 35 in the fuel supply line 15 and the movable block 33. This is the case when a driver is in a vehicle or driving. That is, when the driver operates the transmitter to board the vehicle and transmits the unlock signal to the controller 40, the controller 40 supplies the current supplied from the battery to the solenoid 31. As a result, the solenoid 31 generates a magnetic force while being electromagnetized, and pulls the movable block 33 forced by the magnetic force. As the movable block 33 moves, the communication hole 35 originally formed to deviate from the fuel supply line 15 also moves together to coincide with the fuel supply line 15 so that the entire line is in communication. Therefore, when the fuel is smoothly supplied from the fuel tank 10 to the injector 20 and the driver starts, the engine can operate normally.

At this time, the elastic spring 37 elastically installing the movable block 33 in the housing 39 is tensioned to generate a restoring force in a direction opposite to the direction in which the movable block 33 is moved by the solenoid 31. Since the magnetic force by the solenoid 31 is greater than the restoring force by the elastic spring 37, the starting block 33 is kept in the state in which the fuel supply line 15 is in communication.

On the other hand, if the driver transmits the lock signal by operating the transmitter to switch the vehicle to the alert mode after getting off, the line opening and closing unit 30 according to the present invention is operated as shown in FIG. That is, the control unit 40 receiving the lock signal cuts off the current supplied to the solenoid 31. As a result, the solenoid 31 loses its magnetic force, and the movable block 33 returns to its original position by the restoring force of the elastic spring 37. As a result, the communication hole 35 formed in the movable block 33 is inconsistent with the fuel supply line 15 so that the entire line does not communicate with the fuel supply from the fuel tank 10 to the injector 20. do.

As such, when the fuel supply to the injector 20 is cut off, the engine is not operated even if a third party tries to forcibly start the vehicle, thereby actively preventing the vehicle from being stolen. Because it can only be sent by the transmitter it is carrying, it is safer than conventionally a third party can easily steal the vehicle by cutting the siren or horn wire. Further, as shown in FIG. 1, by installing an alarm such as a siren or a horn, which is a conventional anti-theft device, it is possible to prevent theft more effectively.

On the other hand, as described above, the solenoid 31 is preferably configured such that a current is supplied from the battery when the vehicle is being driven by the release mode, that is, the driver. This is because, while the vehicle is in operation, the battery continues to be charged through the generator connected to the engine, but on the contrary, if the solenoid 31 is configured to be supplied with electric current when in the alert mode, i. Because the battery is used, if the stop state lasts a long time, the battery may be discharged.

As described above, according to the anti-theft device for a vehicle according to the present invention, when the driver sets the boundary mode of the vehicle through the transmitter, the fuel supplied from the fuel tank to the injector is cut off, and a third party is forced to start. Even if the engine is not operated, theft of the vehicle can be prevented more effectively.

Claims (2)

A housing 39 provided on the fuel supply line 15 connecting the fuel tank 10 and the injector 20, and elastically mounted to one side of the housing 39 by an elastic spring 37 and communicating therein. A movable block 33 having a ball 35 and an inner side of the housing 39 and moving the movable block 33 to selectively match the communication hole 35 to the fuel supply line 15. Line opening and closing portion 30 consisting of a solenoid 31 to be made; A controller 40 selectively supplying a current supplied from the battery 41 to the solenoid 31 according to the received control signal; And, Anti-theft device for a vehicle comprising a transmitter (50) operated by a driver to transmit a necessary control signal to the control unit (40). The method of claim 1, Anti-theft device for a vehicle, characterized in that it further comprises an alarm (45) operated by receiving a signal from the control unit (40).