CN2266163Y - Theftproof automatic alarm device for door or window - Google Patents

Abstract

The utility model relates to an alarm device which alarms when a door and a window is pried by thieves. The utility model comprises a built-in lock and an alarm circuit, wherein, the alarm circuit is formed by the series connection of a switch with a first normally open contact, a switch with a second normally closed contact, and an alarm element. The utility model utilizes various combination modes of the two switches which are opened and closed to automatically identify thieves who enter rooms and give out alarm. The utility model has the advantages of simple structure and reliable operation.

Description

Door, window anti-picking electric alarm device

What the utility model related to is a kind of electronic installation on the door and window, that can report to the police automatically when the people prizes door and window that is installed on.

Along with increasing of the increase of the density of population, unit building, a lot of new social concerns have appearred, wherein crack a crib and especially cause people's attention, the various anti-theft devices that are used for family, office or factories and miness also arise at the historic moment, infrared ray theft-proof electron device is arranged, have and writing an article aspect the physical strength of door, window, utilize multiple spot locking to reach antitheft purpose, prevent forcing open the door as the Panpan board that Shenyang produces.It is of a great variety, and is each has something to recommend him.

Goal of the invention of the present utility model provides and a kind ofly is installed on door, electronic alarm device on the window, simple in structure, is used for realizing that the burglar prizes the door window antitheft autoalarm that can report to the police in the door and window process.

Realize this door window antitheft autoalarm of above-mentioned purpose, form by built-in lock and warning circuit, its primary structure technical characterictic is that warning circuit is composed in series by normally opened contact switch, secondary normally closed contact switch and a warning piece, moving bar of the switch of a switch and the interlock of built-in lock dead bolt, realize the closure and the dialysis of a switch with the location status of dead bolt, the setting of secondary switch is installed on the sash, utilizes the closure/disconnection of the ON/OFF realization secondary switch of door and window.

Autoalarm of the present utility model has utilized first and second switch to be in, to leave home owner and the force open the door various combination mode of open and close when committing theft of burglar, can distinguish the burglar to commit theft automatically and start warning piece and be reported to the police, it is simple in structure, reliable in action, sensitivity, and can be combined with present existing antitheft door, realize the purpose of comprehensive theft.

Describe concrete technology contents of the present utility model below in conjunction with institute in detail to accompanying drawing:

Fig. 1 is the general construction synoptic diagram of this door window antitheft autoalarm,

Fig. 2 is the inner structure synoptic diagram of a switch in this alarm

Fig. 3, Fig. 4 are respectively the front view and the upward view of web member structure in this alarm.

As shown in the figure, the door window antitheft autoalarm of the utility model design includes built-in lock 1 and warning circuit 2 two parts, wherein warning circuit 2 is to be composed in series mutually by alarm element 3 and normally opened contact K switch 1, a secondary normally closed contact K switch 2, is connected in both ends of power.On the dead bolt 11 of built-in lock 1, be fixed with the gangbar 5 with its interlock, can stretch out (locking)/indentation (unblanking) action fully, drive the moving bar 4 of switch of a switch, be used to realize the conducting and the disconnection of this switch with dead bolt 11.In the present embodiment, the moving bar 4 of the switch of a K switch 1 is provided with a back-moving spring 6, and the sheet metal 42 on the moving bar 4 is used to be communicated with two contacts 43; Built-in lock 1 is opened for having, the built-in lock of fastening, locked three kinds of states, and gangbar 5 is passed the through hole slideway 41 on the moving bar 4 of switch, and when dead bolt 11 ejects when entering buckling state, gangbar 5 null in this slideway 41, a K switch 1 still are in off-state; Owner goes out among the manager, during with key locking built-in lock, dead bolt 11 is pulled out by force by buckling state, this moment, its gangbar 5 was pulled out significantly with dead bolt 11, because of slideway 41 plugs drive moving bar 4 reaches of switch, contact 42 on the moving bar 4 is linked to each other with contact 43, make this K switch 1 conducting, spring 6 is compressed.Structure is fixed with a connection piece 44 on the moving bar 4 of switch as shown in the figure, which is provided with the slideway 41 that passes gangbar 5, and its effect is the same, repeats no more.Secondary K switch 2 is preferably contact switches, and is installed in a certain position of doorframe, as is installed on the position of door and window fin, closes and closes or open by door, window, presses the moving bar of switch of this switch, realizes the dialysis or the conducting of this switch.Alarm element 3 in the circuit can be audible alarm circuit that music block forms or for electric bell or be other sound equipments, luminaire, in the present embodiment, is comprehensive these panalarms, is provided with a socket 48 that installs this equipment additional in the circuit.

The course of work of door window antitheft autoalarm of the present utility model is: when owner is in, this built-in lock 1 often is in and fastens or open mode, one time K switch 1 disconnects, and this moment, no matter whether secondary K switch 2 was pressed by door, window, and warning circuit 2 can not start work because of being cut off by K switch 1; When owner leaves home, close the doors and windows, secondary K switch 2 is under the effect that presses of door, window, make two contact dialysis, at first cut off warning circuit, pin built-in lock 1 at key then, this moment a switch the moving bar 4 of switch with the effect of the gangbar 5 of dead bolt 11 interlocks under, before drawn, sheet metal 42 on the bar 4 is communicated with two contacts 43, realizes switch closure, make warning circuit 2 be in the preliminary work state.When the burglar prized door and window, in case door, window are prized when framework reaches, secondary K switch 2 contacts lost the pressure normal contact position that rebounds, connect entire circuit, start panalarm immediately, utilize the acousto-optic device prestige to take the photograph the burglar, inform neighbours on every side simultaneously.

Claims (2)

1. a door, window anti-picking electric alarm device, including built-in lock (1) and warning circuit (2) forms, it is characterized in that warning circuit (2) is to be composed in series by a normally opened contact switch (K1), secondary normally closed contact switch (K2) and warning piece (3), moving bar (4) of the switch of a switch (K1) and built-in lock dead bolt (11) interlock, realize the closure and the dialysis of a switch with the location status of dead bolt (11), secondary switch (K2) setting is installed on the sash, utilizes the closure/disconnection of the ON/OFF realization secondary switch of door and window.

2. door window antitheft autoalarm according to claim 1 is characterized in that switch moves bar (4) and is provided with a through hole slideway (41), and the gangbar (5) that is fixed on the dead bolt (11) is passed this slideway (41) setting.

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