CN2493986Y - Multi-function door bell type theft-proof alarm - Google Patents

Abstract

The utility model provides a multi-function doorbell type burglar alarm. The utility model is additionally connected with a triode BG[1], a resistance R[1] and a relay J[1-2] on the alarm bell circuit of the former doorbell type alarm, one end of the relay J[1]is connected with the positive terminal of the power supply through a switch, the other end is connected with the alarm bell circuit, the back of the base serial resistance of the triode BG[1] is connected with a magnetron switch CK, the emitter is connected with the positive terminal of the power supply, the collector is respectively with the relay J[2] coil and the relay J[1] coil through the normally closed contact of the relay J[2] coil, the relay J[1-2] coil and the other end of the alarm bell circuit are connected with the negative terminal of the power supply. The utility model is novel in structure, has a plurality of functions of doorbell, alarm, short circuit, open circuit alarm, is a novel doorbell type burglar alarm.

Description

Multifunction door bell formula burglar alarm

The utility model relates to a kind of electronic type burglar alarm, especially a kind of doorbell formula burglar alarm that integrates doorbell and burglar alarm.

In known technology, the doorbell formula burglar alarm of existing collection doorbell and burglar alarm one mainly is made up of magnetic switch, change-over switch, doorbell button switch and bell circuit.As existing burglar alarm double-tone doorbell is exactly this structure.But its doorbell and warning mutual interference mutually can not be simultaneously and usefulness, can not be with reporting to the police when using doorbell, switch to use when reporting to the police and to use doorbell again, and the connecing lead short circuit or open circuit or magnetic switch can not be reported to the police when destroyed of warning system, function is less, brings inconvenience to use.

The purpose of the utility model provides a kind of improved doorbell formula burglar alarm, make it have novel structure, doorbell and burglar alarm and can switch each independent use mutually, can simultaneously and use again, the multiple function that can also under circuit breaker, short circuit, destruction magnetic switch situation, all can report to the police, easy to use.

For achieving the above object, the technical scheme taked of the utility model is: add on the bell circuit of doorbell formula burglar alarm again and connect triode BG ₁, resistance R ₁And relay J _1-2Relay J ₁Normally closed contact one end meet positive source, other end tapper circuit, triode BG by switch ₁Base series resistor R ₁Back connection magnetic switch CK, emitter connect positive source, collector connects relay J respectively ₂Coil and pass through relay J ₂Normally closed contact connect relay J ₁Coil, connect to form is novel multifunctional doorbell formula burglar alarm.During use, with the magnetic switch of this burglar alarm be attached to need the prison newspaper as appropriate locations such as door, window, cupboard, cabinets, in case magnetic switch action or destroyed appears so that circuit breaker, short circuit are all reported to the police.

Because increasing, the utility model connected the new structure that two relays and triode, resistance are formed on the bell circuit of former doorbell formula burglar alarm, can switch each independent utility mutually as doorbell, alarm, again can be simultaneously and usefulness, can also go to pot or report to the police when circuit breaker, short circuit at magnetic switch.It quite prior art have that function is many, novel structure, advantage such as easy to use, be a kind of novel doorbell formula burglar alarm.

Below in conjunction with drawings and Examples the utility model is described in further detail.

Fig. 1 is the circuit theory diagrams of the utility model embodiment.

Fig. 2 is the circuit theory diagrams of another embodiment.

Fig. 3 is the configuration diagram of the utility model product.

Embodiment as shown in Figure 1, the utility model comprises: magnetic switch CK, K switch, bell circuit RL, relay J _1-2, triode BG ₁And resistance R ₁Relay J ₁Normally closed contact J _1-1One termination bell circuit RL, the other end connect positive source, triode BG after connecting K switch ₁Base series resistor R ₁After meet magnetic switch CK, emitter connects positive source, collector and connects relay J respectively ₂Coil and pass through relay J ₂Contact J commonly used _2-1Connect relay J ₁Coil, relay J _1-2The other end of coil and bell circuit RL is power cathode in succession.As the used direct supply of Fig. 1 embodiment is the 6V power supply, relay J ₁Be 3V, relay J ₂Be the 6V relay, the warning integrated circuit is that HH-1 type, doorbell music integrated circuit are HR-57, the magnetic switch that magnetic switch CK is made up of permanent magnet and tongue tube.By the K switch energized, pass through relay J ₁Normally closed contact J _1-1Connect bell circuit, alarm sends alerting signal.Connect triode BG after connecing magnetic switch CK and resistance R by positive source ₁Base stage by the signal of transistor collector output buck to 3V, is passed through relay J ₂Normally closed contact succeed electrical equipment J ₁The coil adhesive, normally closed contact J _1-1Disconnect the power supply of bell circuit RL, stop to report to the police.Work as resistance R ₁With triode BG ₁Line and during positive source line short circuit, the collector of triode output 6V signal, relay J ₂Adhesive makes its normally closed contact J _2-1Disconnect, power supply is through relay J ₁Normally closed contact J _1-1Connect bell circuit RL, send alerting signal.

Referring to accompanying drawing 2 embodiment, the utility model or on the basis of Fig. 1 embodiment circuit, again at triode BG ₁Go up triode BG in parallel ₂And resistance R ₂, triode BG ₂Base stage crosstalk resistance R ₂Back and triode BG ₁Base stage and connection electrical resistance R ₁, triode BG ₂Emitter meet positive source, collector connecting relay J ₂Coil.Triode BG ₁Collector do not connect relay J ₂Coil.

Claims (2)

1, a kind of multifunction door bell formula burglar alarm, it comprises K switch, magnetic switch CK, bell circuit RL, it is characterized in that also comprising relay J _1-2, triode BG ₁And resistance R ₁, relay J ₁Normally closed contact one end connect bell circuit RL, the other end connects positive source, triode BG after connecting K switch ₁Base series resistor R ₁The back connects magnetic switch CK, emitter connects positive source, collector and connects relay J respectively ₂Coil and pass through relay J ₂Normally closed contact J _2-1Connect relay J ₁Coil, relay J _1-2Coil and the other end of bell circuit RL be connected power cathode.

2, doorbell formula burglar alarm according to claim 1 is characterized in that or at triode BG ₁On triode BG in parallel again ₂And resistance R ₂, triode BG ₂Base series resistor R ₂Back and three utmost point BG ₁Base stage and connection electrical resistance R ₁, emitter meets positive source, collector connecting relay J ₂Coil.

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