RU100977U1 - CAR ANTI-THEFT DEVICE - Google Patents

Abstract

 1. Car anti-theft device made in the form of a keyboard, which is made with the possibility of its fastening on the dashboard of the car, while the anti-theft device is intended for electrical connection of the ignition system of the car engine and the power supply of the car when the user presses the key combination of keys on the keyboard, characterized in that the anti-theft device is equipped with at least one contact button, which is designed to electrically connect elem Vehicle-coagulant power with at least one of: the security alarm devices, automotive siren, a light device, wherein said at least one contact button is arranged to closure of the contacts when attempting to detach the protective device on the car dashboard. ! 2. The car anti-theft device according to claim 1, characterized in that the said at least one contact button is made in the form of a button with normally closed contacts. ! 3. The automobile anti-theft device according to claim 1, characterized in that the said at least one contact button is made in the form of a button with normally open contacts. ! 4. The automobile anti-theft device according to claim 1, characterized in that when installing the anti-theft device in a car in an electric circuit between the anti-theft device and the engine ignition system or between the anti-theft device and the vehicle’s power supply element, there is an ignition switch. ! 5. The car anti-theft device according to claim 1, characterized in

Description

The invention relates to an automobile anti-theft device, in particular to a device for preventing unauthorized use or theft of a vehicle, preventing an attacker from using a car engine.

The prior art device for preventing theft of a car [Japanese Patent No. 55063937, published 05/14/1980], which consists of a keyboard for entering a secret code, and a control unit. The keyboard is located inside the car, preferably on the dashboard. The control unit is located under the dashboard and contains a logic circuit connected to the keyboard, as well as an electromagnetic relay connecting the vehicle’s battery (battery) and the engine ignition system (starter). As soon as the user enters the correct code, the relay closes, leading to the engine factory, and the user can use the vehicle.

Also known is an automobile anti-theft device [US Patent No. 5,396,216, published March 7, 1995], made in the form of a keyboard, and also containing a control unit to which a keyboard is connected. The ignition lock, hood lock, siren, lighting fixtures, car ignition system, car battery, etc. are also connected to the control unit. This anti-theft device was chosen as a prototype of this utility model.

In a known anti-theft device, the keyboard is located on the dashboard of a car. In one embodiment of such a device, this panel is configured to rotate around its central axis so that it can be hidden by turning it inside the dashboard, which prevents an attacker from quickly searching for it. The control unit is aligned with the keyboard. Similarly to the above example, when the user enters the correct code combination on the keyboard, the control unit connects the vehicle’s battery to the engine’s ignition system, allowing the vehicle to be used. Otherwise, when trying to break into the system and steal the car, the control unit turns on the sound siren, blocks the hood, turns on the light fixtures.

Both of the above technical solutions have the disadvantage that an attacker can quite easily access the control unit and try to either turn it off or hack and try to directly close the cables coming from the car’s battery and engine ignition system, which can lead to engine factory. In the first case, an attacker can remove the keyboard from the dashboard and see where the control unit is located and where the wires of interest are located. In the second case, the control unit itself is located on the keyboard, so an attacker only needs to open the keyboard body.

Given the above disadvantages, the technical result, the achievement of which is directed by a real utility model, is to increase the reliability and protect the device from malicious access to its components.

To achieve the above technical result, an automobile anti-theft device, according to the present utility model, is made in the form of a keyboard. The inventive automobile anti-theft device is intended for electrical connection of the engine ignition system and the vehicle’s power supply element when the user presses the key combination of keys on the keyboard. Moreover, the keyboard can be fixed on the dashboard of the car.

The anti-theft device differs from the prototype in that it is equipped with at least one contact button, which is designed to electrically connect the vehicle’s power supply element to at least one of: security alarm device, car siren, light device. When you try to disconnect the anti-theft device from the dashboard of the car, the power element is electrically connected to the burglar alarm or car siren by means of a contact button.

Mentioned at least one contact button may be made in the form of a button with normally closed or open contacts.

When installing an anti-theft device in a car, there may be an ignition switch in the electrical circuit between the anti-theft device and the engine ignition system or between the anti-theft device and the vehicle’s power supply.

Said at least one key may be in a circuit between at least one contact button and a vehicle power supply element.

The car anti-theft device may further comprise interconnected control unit and an electromagnetic relay, the keyboard may be connected to the control unit.

The contact button can be connected to the control unit.

In this case, the control unit may be configured to be connected to the security alarm device.

The essence of the utility model is further described in detail with reference to the drawings, which show:

Figure 1 is a general schematic view of a car in which an anti-theft device is installed and connected to various components of the car;

Figure 2 - schematic appearance of an anti-theft device made in the form of a keyboard;

Figure 3 is a schematic illustration of a keyboard and its circuit diagram according to a first embodiment;

4 is a schematic illustration of a keyboard and its circuit diagram according to a second embodiment;

5 and 6 are schematic cross-sectional views of a keyboard panel and a contact button.

The anti-theft device can be performed as follows.

As shown in FIG. 1, the anti-theft device 1 can be placed inside the interior of the car 2, preferably on the dashboard or near the driver's seat. The anti-theft device 1 is configured to be connected to a cable coming from the vehicle’s power supply element 3 (for example, a battery), as well as a cable going to the engine ignition system 4 (for example, a starter). Connection to the cable can be performed in any known manner (for example, through the use of plugs, connectors, pads, etc.). The anti-theft device 1 is also configured to be electrically connected to one of: a security alarm device 5, an audible siren 6, a light device (s) 7, or connected to any combination thereof. In the electrical circuit between the anti-theft device 1 and the engine ignition system 4 or between the anti-theft device 1 and the vehicle’s power supply element 3, an ignition lock 8 can be placed.

Figure 2 presents the appearance of the anti-theft device 1, which is made in the form of a keyboard. As an example, the anti-theft device 1 can be made in the form of a flat or curved panel with a set of keys placed on it, electrically connected to each other. As can be seen from Figure 2, the keyboard has keys (position 9). In the illustrated example, there are ten of them with identification numbers from "0" to "9". Although it will be obvious to a person skilled in the art that any number of keys with any possible variant of their identification can be used. The keyboard of the anti-theft device 1 can be attached to the dashboard of the car by means of screws, latches, clips or any other possible and known method. In the example shown in FIG. 2, four holes 10 are formed in the keyboard (or panel) housing for attaching the anti-theft device 1 to a dashboard or any other structural element of a car (support, bracket, etc.).

Figure 3 shows a first embodiment of a utility model. Here, an anti-theft device 1 with ten keys is presented. Nine keys, from “1” to “9”, are electrically connected to a serial electrical circuit. One end of this circuit is designed to be connected to the vehicle’s power supply element 3, and the other to the engine’s ignition system 4. Each key is made in the form of a button with normally closed or open contacts. In the example of FIG. 3, only the keys “1”, “5” and “9” are normally open, the rest are normally closed. The keys may be performed in any known manner. For example, they can be spring (self-returning), sensory, capacitive, etc. When you press the mentioned keys "1", "5" and "9", the electric circuit from the vehicle’s power supply element 3 to the engine ignition system 4 is closed, which allows either an electrical signal to be transmitted or voltage to be supplied to the engine ignition system 4. Thus, the user entering the secret code “1-5-9” allows him to start the engine and use the vehicle. An attacker will need to spend a significant amount of time to find the right combination. For a person skilled in the art it will be clear that the anti-theft device 1 may have any other secret key combination than the one above, starting from one key and ending with all. Using both buttons with normally open and normally closed contacts will not allow an attacker to dial a secret combination by pressing all the keys simultaneously.

The keyboard is also provided with at least one contact button 11, which is, for example, normally open. This contact button is connected on one side to the vehicle’s power supply element 3, and on the other hand, to the alarm device 5 or siren 6. As soon as an attacker tries to remove the anti-theft device 1 from the dashboard, the contact button 11 will close. This, in turn, will to the circuit of the siren 6 or the alarm device 5.

In the circuit of the contact button, two keys can also be installed (for example, the key “0” and “A” as shown in FIG. 3), one of which is normally closed and the other is normally open. In the event of a security alarm, one of these keys will open the circuit.

For a person skilled in the art it will be understood that the number of contact buttons and keys on the keyboard to open the circuit may be more than described above. It is clear that using a combination of such keys, it is possible to create conditions under which the security alarm device 5 or siren 6 is turned off only after pressing a certain predetermined set of keys. It is also obvious that it is possible to create conditions under which it will be possible to force the user of the device 5 to activate a security alarm or siren 6 when a certain predetermined set of keys is pressed. It will be understood by those skilled in the art that various modifications and combinations of such keys are possible.

Figure 4 illustrates a second embodiment of a utility model. Here, the anti-theft device 1 is made in the form of a keyboard 12, which is connected to the control unit 13. The control unit 13, in turn, is connected to the electromagnetic relay 14. As the control unit 13, a processor (connected to the memory or the built-in memory), a microprocessor or a group thereof, a logic circuit, a computer, etc. can be used. The electromagnetic relay 14 is configured to be connected to the vehicle’s power supply element 3 and to the engine’s ignition system 4. The control unit 13 is configured to receive a user inputting a code sequence from the keyboard, analyze it, and if it matches a predetermined sequence, issue a control signal to an electromagnetic relay 14 to close it. After closing the relay 14, the user has the opportunity to start the car engine. The control unit 13 can also be configured to force the device 5 of the security alarm and / or audible siren 6 and / or lighting devices (not shown) to be used together or in combination.

The anti-theft device 1, according to the second embodiment, also contains at least one contact button, which is designed to connect to the vehicle’s power supply element 3 and the security alarm device 5 or the car siren 6. Like the first embodiment above, when trying to open the anti-theft device 1, its removal from the dashboard, the contact button closes and a signal (or voltage) is supplied to the security device 5 and / or siren 6 and / Whether lighting devices for their engagement.

Figures 5 and 6 show possible embodiments of a contact button (the figures show a cross section of an anti-theft device). As can be seen from Figure 5, the contact button 11 can be fixed on the surface of the keyboard of the anti-theft device 1 so that when the anti-theft device 1 is correctly installed on the dashboard of the car or in its interior, the contact button 11 is closed due to any pressure car element 15 (dashboard element, bracket, support, etc.). When the contact button is opened, an alarm or siren is triggered.

Figure 6 shows another example in which the keyboard of the anti-theft device 1 is attached to the dashboard or other element 16 of the car by means of a screw 17. When the screw is installed correctly, the contact button is closed. When you try to unscrew the screw, the circuit in the contact button disappears, which leads to the operation of the device 5 of the security alarm or siren 6.

Any possible button (with normally closed and / or normally open contacts), any pair of elastic contacts, etc. can be used as a contact button.

The preceding description of the utility model is exemplary and illustrative. It will be apparent to those skilled in the art that various modifications and changes are possible that fall within the scope of the claims of the utility model formula.

Claims (8)

1. Car anti-theft device made in the form of a keyboard, which is made with the possibility of its fastening on the dashboard of the car, while the anti-theft device is intended for electrical connection of the ignition system of the car engine and the power supply of the car when the user presses the key combination of keys on the keyboard, characterized in that the anti-theft device is equipped with at least one contact button, which is designed to electrically connect elem Vehicle-coagulant power with at least one of: the security alarm devices, automotive siren, a light device, wherein said at least one contact button is arranged to closure of the contacts when attempting to detach the protective device on the car dashboard. 2. The car anti-theft device according to claim 1, characterized in that the said at least one contact button is made in the form of a button with normally closed contacts. 3. The automobile anti-theft device according to claim 1, characterized in that the said at least one contact button is made in the form of a button with normally open contacts. 4. The automobile anti-theft device according to claim 1, characterized in that when installing the anti-theft device in a car in an electric circuit between the anti-theft device and the engine ignition system or between the anti-theft device and the vehicle’s power supply element, there is an ignition switch. 5. The automobile anti-theft device according to claim 1, characterized in that at least one key of the keyboard is in a circuit between at least one contact button and a vehicle’s power supply element. 6. The automobile anti-theft device according to claim 1, characterized in that it further comprises a control unit and an electromagnetic relay interconnected, the keyboard being connected to the control unit. 7. The automobile anti-theft device according to claim 6, characterized in that at least one contact button is connected to the control unit. 8. The automobile anti-theft device according to claim 6, characterized in that the control unit is configured to be connected to a security alarm device.