CN2546274Y - Electric controlling anti theft device for vehicle, safe box and door etc - Google Patents

Abstract

The utility model relates to an electric control anti-theft device for vehicles, coffers and doors, comprising an electromotor or electromagnetic coil and the relevant control circuit. The control circuit comprises at least two types of relay, while the contact circuits of all relays are connected in series to form the control circuit to control the electromotor or electromagnetic coil. The circuits of all relays are usually disconnected; the smooth connection of the control circuit can be maintained only by the correct connection which is of extremely low probability. The utility model has the advantages of strong anti-theft performance which is extremely difficult to be decoded, simple structure, low cost, easy operation and strong confidentiality. Compared with the electronic anti-theft devices and mechanical locks with anti-theft devices in the current market, the utility model possesses more obvious advantages.

Description

A kind of electrical control Car Burglar Alarm that is used for vehicle, coffer, class

One, technical field

The utility model relates to a kind of electrical control Car Burglar Alarm that is applicable to vehicle, coffer, class.

Two, background technology

At present, the anti-theft device for vehicle kind roughly has three classes.The one, special technology is antitheft.As the code anti-theft technique of the radio-frequency transmissions responser key anti-theft technique of the U.S., the change password infrared signal special sensor anti-theft technique of Germany, Australian electronic tracking anti-theft technique, France etc.But for various reasons, these technology only concentrate on a few countries, minority vehicle.The 2nd, the wireless remote control type Car Burglar Alarm is provided with sound and light alarm, remote control and forces functions such as flame-out.But in case antitheft circuit is destroyed, or the remote control password intercepted and captured by Doppler's oscp (demoder) and decodes, and then anti-theft feature performs practically no function.And the flase alarm phenomenon that disturbs residents has become public hazards.Many robber's cars clique also utilizes this deadly defect just, just goes smoothly again and again.The 3rd class is that mechanical lock is antitheft, as handle lock, gear lock etc.Though price is low, face unblank master-hand, master key, or avoid lockset itself, steal car with modes such as sawed-off bearing circle, shifter bars, can not play antitheft effect equally.Remove this three class, have tens cities 110 to establish track and localization monitoring anti-theft technology.But because charge high (3000～4000 yuan of dress charges just, about 80 yuan of charges per month), problem such as protection face is little, and the blind area is many, what have gets down from horse.Introduce according to " Jurisprudence Daily " one piece of article " automobile burglar will renew thinking ", in year May in May, 1998 to 1999, in the stolen self-propelled vehicle in Beijing, what two, three class Car Burglar Alarms were installed accounts for 68.6% unexpectedly.Equally, to various coffers, cabinet, antitheft door, original mechanical lockset in the face of master key, the master-hand that unblanks, performs practically no function.

Three, summary of the invention

The utility model is achieved in that it comprises electrical motor or magnet coil and its control circuit.Control circuit comprises at least two types of relays.Wherein at least one open contact relay and a normally closed contact relay.All relay contact circuit series connection are formed the control circuit switch, the work of control motor or magnet coil.All relay coil circuit are in off-state at ordinary times, have only by correct connection, and it is unimpeded that the relay contact circuit just can keep, this circuit can with time-delay, warning circuit joins, to strengthen anti-theft.

On automobile, this control circuit: 1. can link to each other with a magnet coil valve.Electromagnetic valve is installed on the oil circuits such as fuel oil, brake, clutch, and by the break-make of this circuit controling electromagnetic valve, thereby control vehicle starts.2. link to each other with electrical motor, positions such as mechanical lock and oil circuit, wheel, transmission are because the installation site is typically chosen in shelters such as chassis, and the available metal material is airtight, the burglar is difficult to destroy, and the motorist can conveniently realize correct connection at the driving wheel, thereby has good operability.

On classes such as coffer, cabinet, also can link to each other with electromagnetic valve or electrical motor, electromagnet, realize that fluid power (pipeline) or mechanical lock opens.

Four, description of drawings

Accompanying drawing is the utility model schematic diagram

Five, the specific embodiment

The utility model comprises that it comprises electrical motor or magnet coil and its control circuit.Control circuit comprises at least two types of relays.As shown in drawings, control circuit comprises 5 relays.K wherein ₁Be the normally closed contact relay, other is the open contact relay.K ₁Coil generally stretches out 20 lead A ₁～A ₂₀, K ₂-K ₅Coil one utmost point respectively stretches out a lead B ₁～B ₂All relay coils another extremely after the parallel connection, stretch out a lead C.Have only correctly with B ₁～B ₄Extremely in parallel with power supply one, simultaneously C and this power supply another extremely link to each other and A ₁～A ₂₀Appoint one or more must not with B ₁～B ₄Under the situation of linking to each other, K ₁Keep normally closed, K ₂-K ₅The closing of contact, the contact circuit conducting.But the circuit of its control is normal operation: as missing A ₁～A ₂₀Appoint one or more power connection one utmost point, another utmost point of C power connection is with K ₁The coil circuit conducting, K ₁Contact open disconnects with contact circuit.Electrical motor or electromagnetic coil circuit quit work, thereby reach antitheft purpose.Say that with this circuit connecting accuracy at random is 0.079/1000th.Resistance R ₁～R ₂₅Be compensating resistance, each is variant for resistance.To prevent that the burglar from judging lead with the mode of measured resistance value or electric current, K ₁Can use time delay closing relay.

Claims (2)

1, a kind of vehicle, coffer, class electrical control Car Burglar Alarm, it is characterized in that: it comprises electrical motor or magnet coil and its control circuit, all relay contact circuit series connection of control circuit, form the master cock circuit, by the work of its control motor or magnet coil, all relay coil circuit disconnect at ordinary times.

2, Car Burglar Alarm according to claim 1 is characterized in that: be connected to time-delay, warning circuit on control circuit.