CN86210084U - Secret coded lock with electronic alarm - Google Patents

Abstract

The utility model discloses a secret coded lock with electronic alarm whose code is encoded according to the arrangement of r from n, and can be altered by a user at will. The lock can be unlocked by pressing the correct secret code when opening a door, and the code is wiped immediately after the door is open. The sound-producing device for alarming of the device is connected by an alarming line and can be provided apart with the lock body. The secret coded lock with electronic alarm can alarm when the code is wrongly input, the alarming line is broken, the line is contacted with the earth or AC 220V. The utility model whose core device is a relay and applied technical is derating has the advantages of interference immunity, convenient and safe operation, completed warning function which is not easy to be discovered or destroyed, low cost, simple manufacture, etc. The secret coded lock with electronic alarm can be used in the confidential and theft protected places, such as strongboxes, security rooms, storehouses, etc.

Description

Secret coded lock with electronic alarm

The utility model belongs to the application of electronic technology.

Before the utility model was made, domestic also had a report, as the electronic password lock of CN85200005U.Though this lock function is complete, selects valency higher, and is tighter to manufacture process requirement, and the warning pronunciation device is one with lock, can not separate placement, and chimes of doom operating distance is restricted, and the warning acoustical generator is easily stopped up by the criminal.

The purpose of this utility model provides and a kind ofly selects that valency is cheap, manufacturing process is simple, multiple functional, warning pronunciation device is difficult for being found and destroying, but the electronic cipher alarming lock that concealed type is reported to the police.

Main points of the present invention are to be core devices with the relay, adopt the derate technology, preferred by to electronic circuit, and combination produces and anti-ly removes, pick-proof, anti-pounding, and warning function is complete, safe and reliable electronic cipher alarming lock.

Accompanying drawing is a schematic diagram of the present utility model.

What be carved with the 0-9 numeral among the figure is the Password Input knob, and (10), (11) are the cipher control appliance mains switches, and (12) are power supply indicators, and the outside that (10), (11), (12) all are contained in door forms the unlock operation keyboard. (13) be the password setting jack that is carved with the 0-9 numeral, (14) are five password setting plugs that are carved with I-V numeral, and (15) are by the error code alarm plug. (13), (14), (15) all are contained on the Crypto Control Unit box, the inboard that is positioned on door for the user set, Change Password uses. (16), (17), (18), (19), (20) are relay corresponding to every password, as memory usefulness, and consist of n with D3, D4, D5 and select r coding and sorting order circuit. (31), (32), (33), (34) are respectively the transfer contact of relay (16), (17), (18), (19), (35), (36) are two groups of normally opened contacts of relay (20). (21) be unlock solenoid. BG1 Be used for removing password, consist of the clear decoding circuit of warning knob with D6, R2, BG2 is used for starting relay (20), and BG3 is used for sequence of coden and misrepresents deliberately the police. R1, D1, D2, C1 consist of the rectifier power source E1 of Crypto Control Unit, and R5 is warning resistance. (22) be to open the door to smear code switch, (23) be anti-pound, anti-ly remove, the pick-proof inertia pendulum, (24) are warning acoustical generator switches, E2 is the electric mixer power supply of reporting to the police. D7, D8, D9, D10, D17 form anti-alternating current 220V and destroy circuit, BG4, BG5 and D11-D14, R6-R11, C2 form alarming line disconnection, ground connection, alarm signal and trigger memory circuit, BG6, BG7, BG8, BG9 and on every side components and parts form the police whistle sound pronunciation circuit.

Operating principle of the present utility model is described below by the embodiment of five passwords.The user gives earlier selected password in use, the every password setting plug that is about to selected in advance password figure correspondence inserts password setting jack (14), the password setting plug of first password figure correspondence inserts I position password setting jack, second plug inserts II position jack, remainder is analogized, and five plugs are all inserted corresponding V position jack.All the other password setting plugs of not selecting for use are inserted by error code warning jack (15).For example, selected password is 26840, and then 1,3,5,7,9 five password knob is by the error code alarm button.On door lock, connect power switch (11) when opening the door earlier, power supply indicator this moment (12) is bright, and when then inputing password 26840, lock can be opened.

Of the present utility model further describe as follows: after pressing the button 2, power supply is switched to an end of relay (16) winding, the other end of relay (16) winding, makes relay (16) get electric self-insurance, and has prepared the self-insurance power supply for relay (17) to power supply negative terminal through BG1.After pressing the button 6, relay (17) gets electric self-insurance, and has prepared the self-insurance power supply for relay (18).After pressing the button 8, relay (18) self-insurance, and prepared the self-insurance power supply for relay (19).After pressing the button 4, relay (19) self-insurance, and power supply is added to an end of relay (20), and BG3 is ended.After pressing the button 0, the BG2 conducting, the other end footpath BG2 of relay (20) receives power supply negative terminal, and relay (20) gets electric self-insurance, and because of BG3 ends, the power supply of button 0 adds less than on the R5, can not cause warning.And another group contact (36) connection electromagnet (21) of relay (20) makes its action, and lock just is opened.Men Kaihou opens the door and smears code switch (22) conducting, and the rectifier power source of Crypto Control Unit is by short circuit, thereby every password relay is discharged, and electromagnet discharges, and password is erased.If by sequence of coden put upside down, then corresponding relays can not get the self-insurance power supply, can not remember the password of being inputed; If preceding four orders of password not to or by full four, then still conducting of BG3, behind the 5th password, power supply is added on the R5 through BG3, causes warning.As if being pressed, password do not put, after then depressing the password button of preceding four back, just because of the actuating of relay of back password, its constant close contact has disconnected being connected of prime password button and password relay, and make the prime relay can not get power supply, and because the isolation of D5 makes relay (20) can not get power supply, the lock of not opening.If depressed non-password figure button in the defeated sign indicating number process, BG1 is ended, thereby go out the password of having sent into clearly, and cause warning on the R5 owing to power supply adds to.

Warning pronunciation device of the present utility model can be put into sheltered situations such as janitor's room away from lock body.The warning pronunciation device is connected by a lead with Crypto Control Unit, and does the loop by the center line (ground wire) of alternating current 220V, constitutes long distance alarm line.When normally unblanking, because BG3 ends, power supply adds less than on the R5, and D9 connects the center line of 220V again after alarming line meets R5, and the negative terminal by center line and warning pronunciation device power supply E2 joins.After the power switch of warning pronunciation device (24) is connected, owing to C2 charges, and BG4 is ended, the BG5 conducting by adjustment to resistance R 1, R8; After the BG5 conducting, BG6, BG7, BG8, BG9 are all ended, the warning pronunciation device is sounding not.If by error code or not right by sign indicating number order, power supply is added on the R5, because the negative terminal of the power supply E2 of the negative terminal of the rectifier power source E1 of Crypto Control Unit and warning pronunciation device all is connected on the center line of alternating current 220V, and E1＞E2, so D9 is reverse, and the BG4 conducting, BG5 ends; After BG5 ended, the chimes of doom as the siren was sent in BG6, BG7, BG8, BG9 and the police whistle sound pronunciation circuit work formed of components and parts on every side thereof.As alarming line disconnection, ground connection or add alternating current 220V, can cause that all D9 ends and reports to the police.Remove, pound, when prizing, vibrated owing to inertia pendulum, pendulum and pendulum housing are collided, and the bias current that causes BG5 is by bypass, and BG5 ends, electric current process R10, D13, and make the BG4 conducting, the work of warning pronunciation device.When adding alternating current 220V on the alarming line, because of positive half cycle by D7, D8, D9 blocking-up, negative half period is by D10, D17 blocking-up, and R5, R6, E2 are difficult for destroying for exchanging, thereby have protected entire circuit.

Warning pronunciation device of the present utility model is self-insurance once triggering, till the operator on duty disconnects warning pronunciation device power supply.

Claims (7)

1, a kind of electronic cipher alarming lock comprises unlock operation keyboard, warning circuit, it is characterized in that being selected r coding and sorting order circuit, trigger memory circuit, being prevented that alternating current 220V from destroying circuit by n.The clear decoding circuit of button, and long distance alarm line, open the door and smear code switch, inertia pendulum and form.

2, electronic password lock according to claim 1 is characterized in that forming n by relay (16,17,18,19,20) and transistor (D3, D4, D5) selects r coding and sorting order circuit.

3, according to claim 1,2 described electronic password locks, the pronunciation device that it is characterized in that reporting to the police links to each other by a lead with Crypto Control Unit, and does the loop by the center line of alternating current 220V, constitutes long distance alarm line.

4, electronic password lock according to claim 1, it is characterized in that with inertia pendulum as anti-pound, anti-ly remove, the pick-proof signal trigger.

5, electronic password lock according to claim 3 is characterized in that alarming line opens circuit, ground connection, alarm signal triggers memory circuit, is made up of BG4, BG5, D11-D14, R6-R11, C2.

6, electronic password lock according to claim 3 is characterized in that preventing that the warning circuit that alternating current 220V destroys from being made up of D7-D10, D17.

7, electronic password lock according to claim 3 is characterized in that the clear decoding circuit of button is made up of D6, R2, BG1.