CN2238291Y

CN2238291Y - Theft-proof alarm lock

Info

Publication number: CN2238291Y
Application number: CN 95244279
Authority: CN
Inventors: 姚宗金
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-06-27
Filing date: 1995-06-27
Publication date: 1996-10-23
Anticipated expiration: 2005-06-27

Abstract

The utility model relates to an alarm lock, which comprises a lock casing, a lock core, and a lock rod. An electronic alarm is arranged in the lock casing. The utility model is characterized in that a power switch of the electronic alarm is correspondingly coordinated with a linking piece on the lock core; both ends of the lock rod can be connected with the wire connection end of the electronic alarm; when the lock rod is sheared off artificially, the alarm lock can automatically send out alarm sound, and thereby, property can be prevented from being stolen. The utility model which is one of ideal lock tools for using in people's business trip journey has the advantages of simple structure, flexible and convenient use.

Description

Anti-theft alarm lock

The utility model relates to a kind of alarming lock.

In background technology, the lock or the chain type of people's band commonly used spring hitch lock the locking portable object, but owing to chain, locking bar are easily cut off, cause the stolen situation of object to happen occasionally thus, if can in time realize the impaired situation of lock, can prevent that then object is stolen.

The novel purpose of this reality is to provide a kind of lockset with burglar alarm effect, to ensure people's property safety.

The purpose of this utility model is achieved in that it comprises lock housing, lock core and locking bar, is provided with electronic alarm in the lock housing, it is characterized in that power switch in the electronic alarm and the STATEMENT OF FEDERALLY SPONSORED corresponding matching on the lock core, and locking bar is in the circuit of electronic alarm.

The utility model is owing to be provided with electronic alarm in lock housing, its reasonable in design, easy to use when locking bar is cut off, chimes of doom can take place, thereby can prevent that object is stolen.

In conjunction with the accompanying drawings and embodiments, the utility model is further specified as follows:

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

Fig. 2 is circuit theory diagrams of the present utility model

With reference to accompanying drawing: the utility model includes lock core 4 and electronic alarm 2 is installed in lock housing 1, the lock housing 1, one end of elasticity locking bar 6 and lock housing 1 Joint, its other end is provided with tapered end 5, tapered end 5 can be sealed with lock core 4, in the upper end of lock core 4 STATEMENT OF FEDERALLY SPONSORED 3 is housed, the power switch K corresponding matching in STATEMENT OF FEDERALLY SPONSORED 3 and the electronic alarm 2.

Electronic alarm 2 is by sounding circuit, amplifying circuit and control circuit are formed, sounding circuit is the IC of CD4584 by model, resistance R 1, R2, R3, capacitor C 1, C2, diode D1, D2 forms, IC is the hex inverter that has the Shi Mite circuits for triggering, in its pin 14 and the control circuit in the negative terminal of one-way SCR D4 and the amplifying circuit primary coil of transformer B join, pin 7 connects power cathode, pin 1 connecting resistance R1, diode D1 and capacitor C 1, be connected to pin 2 after other end resistance R 2 series connection of resistance R 1, another termination power cathode of capacitor C 1, the anode of the anode of diode D1 and diode D2, resistance R 3 also connects, the negative terminal of diode D2 and pin 2, pin 3 also connects, the other end pin 6 of resistance R 3, pin 5 connects power cathode after capacitor C 2, pin 4 joins with the base resistance R4 of triode V.Amplifying circuit is made up of triode V, base resistance R4, transformer B and loudspeaker Y, and the primary coil of the colelctor electrode of triode V and transformer B joins, and the secondary coil of transformer B is in parallel with loudspeaker Y.Control circuit is made up of one-way SCR D4, diode D3, resistance R 5, K switch, power supply DC and terminals n, m and elasticity locking bar 6, power supply DC positive pole is through K switch and one-way SCR D4 anode and resistance R 5 and connect, the negative terminal of the trigger end of D4 and diode D3 joins, the anode of D3 and resistance R 5, terminals n also connect, terminals m connects power cathode, is connected to locking bar 6 between terminals n, m.During use, key 7 can be inserted in the lock core 4 and rotate, make lock locking, then STATEMENT OF FEDERALLY SPONSORED 3 is with after K switch contacts, and makes the K switch closure, at this moment controllable silicon D4 and resistance R 5 energisings, but because elasticity locking bar 6 connects power cathode, then the trigger end of controllable silicon D4 is a zero potential, and controllable silicon D4 ends, the sounding circuit no power, be alarm free sound, when the people cuts off elasticity locking bar 6, by resistance R 5, it is positive potential that two utmost point D3 make the trigger end of controllable silicon D4, the D4 conducting, then sounding circuit starting of oscillation, the audio signal that changes is amplified by triode V, after transformer B boosts, make loudspeaker Y send chimes of doom, thereby reach the effect that prevents stolen property.

Claims

1, a kind of anti-theft alarm lock, comprise lock housing (1), lock core (4) and locking bar (6), be provided with electronic alarm (2) in the lock housing (1), it is characterized in that the power switch K of electronic alarm (2) and STATEMENT OF FEDERALLY SPONSORED (3) corresponding matching on the lock core (4), the two ends of locking bar (6) can (m) link to each other with the backguy end (n) in the electronic alarm (2).

2, anti-theft alarm lock according to claim 1, it is characterized in that described electronic alarm (2) is made up of sounding circuit, amplifying circuit and control circuit, in the negative terminal of the controllable silicon D4 in the control circuit and the source of sound power supply in the pin 14 of IC and the amplifying circuit primary coil of transformer B join.

3, anti-theft alarm lock according to claim 2, it is characterized in that the control circuit in the described electronic alarm (2) is made of controllable silicon D4, diode D3, resistance R 5, K switch, power supply DC, terminals n, m and elasticity locking bar (6), power supply DC positive pole is through K switch and controllable silicon D4 anode and resistance R 5 and connect, the negative terminal of the trigger end of D4 and diode D3 joins, the anode of D3 and resistance R 5, terminals n also connect, terminals m connects power cathode, is connected to locking bar (6) between terminals n, m.