CN2383945Y

CN2383945Y - Anti-theft door with cipher alarm

Info

Publication number: CN2383945Y
Application number: CN 99229218
Authority: CN
Inventors: 马建忠
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-08-17
Filing date: 1999-08-17
Publication date: 2000-06-21
Anticipated expiration: 2009-08-17

Abstract

The utility model relates to an anti-theft door with a cipher alarm. The utility model comprises a door body 3 and a door lock 7, and the utility model is characterized in that one independent cipher alarm is additionally arranged on the door body 3. The cipher alarm is composed of a host machine 9 of the cipher alarm arranged on the upper part of the door lock 7 and a door magnet 2 arranged on a door frame 1 and the door body 3. When people want to open a door to go into a house, firstly the cipher is keyed through a keyboard of the cipher alarm, thus the alarm is eliminated off the ground alert, and then people can open the door with a key. A door magnetic alarm circuit can be opened to send out an alarm when the cipher is keyed in wrong many times, the door is prized or is opened by other methods. The anti-theft door has the advantages of simple structure, low cost, and good theftproof effect.

Description

The security door of band cipher alarm

The utility model relates to a kind of security door, is specifically related to a kind of anti-theft alarm door.

The security door of common band alarm, have the band password and not with two kinds of modes of password.The anti-theft alarm door of band password has electromagnetic locking device, and its complex structure costs an arm and a leg.And only when door lock or a door body are destroyed, just do not report to the police with the anti-theft alarm door of password, steal bitting or door is opened when his human and illegally enter the Shi Buhui starting and report to the police with additive method.Therefore this anti-theft alarm door can not reach the purpose of burglar alarm fully, and anti-theft effect is poor.

The purpose of this utility model is to provide a kind of anti-theft alarm door of simple in structure, good anti-theft effect.

The utility model is achieved in that a kind of security door with cipher alarm, is a cipher alarm independently that installs additional on original security door body.

Cipher alarm of the present utility model is by installing at the cipher alarm main frame above the door lock and placing a doorframe and the door magnetic two parts on the door body to form.

Compare with existing anti-theft alarm door, the utility model has installed an alarm independently additional on common security door body, enters when opening the door, and at first will be by the keyboard key feeding cipher of cipher alarm main frame: then reporting to the police, it be on the alert to eliminate, and opens door with key then.If push the wrong password for several times, or directly door pried open, or otherwise door is opened, because door status switch is hidden in a body and the doorframe, be that enabling gate magnetic warning circuit gives the alarm after it staggers, so the utility model is not only simple in structure, cheap, and good anti-theft effect.Can reach the purpose of burglar alarm fully.

Fig. 1 is a structural representation of the present utility model.

This cipher alarm circuit diagram of the present utility model of Fig. 2.

Below in conjunction with accompanying drawing the utility model being done one describes in detail:

As shown in Figure 1, a kind of security door that has cipher alarm.Form by door body 3, door lock 7, cipher alarm, doorframe 1, doorbell and alarming horn 4, peep-hole 5, bell button 6, door handle 8 etc.Cipher alarm is by installing at the cipher alarm main frame above the door lock 79 and placing a doorframe and door magnetic 2 two parts on the door body 3 to form.

Enter when opening the door, at first will be by the keyboard key feeding cipher of cipher alarm main frame, the elimination of then reporting to the police is on the alert, opens door with key then.If push the wrong password for several times, or directly door is pried open, or otherwise door is opened,, be that enabling gate magnetic warning circuit gives the alarm after it staggers because door status switch is hidden in a body and the doorframe.

As Fig. 2, cipher alarm circuit part of the present utility model is by read-only storage EPROM2716 (IC ₁), NAND gate circuit IC ₇, IC ₈(7400), double D trigger IC ₃～IC ₆(7474) and trigger composition such as warning circuit.

IC ₂Adopt binary system coincidence counter 7461, composition such as it and 555 time base circuits press the wrong button record and warning circuit, when opening the door according to password, as long as push the wrong a cryptographic key by mistake, cipher alarm will revert to original state.Press the wrong button accumulative total 15 times after, by IC ₂The writing circuit of forming just sends signal automatically, promotes by 555 warning circuits of forming.AN ₈Be used for removing counting.

EPROM2716 is the core parts of cipher alarm, and the different units of its internal storage has stored 16 cover passwords, and the selection of cipher code set can be passed through switch S ₁～S ₄Come permutation and combination, promptly change S ₁～S ₄On-state, just can change the address of holder, obtain the password in the different memory areas.

Claims

1, a kind of security door with cipher alarm comprises a body (3) and door lock (7), it is characterized in that adding on the body (3) cipher alarm independently.

2, a kind of security door according to claim 1 with cipher alarm, it is characterized in that cipher alarm by device the cipher alarm main frame (9) of door lock (7) top and place doorframe (1) and a body (3) on magnetic (a 2) two parts form.