CN2177263Y

CN2177263Y - Anti-theft alarm

Info

Publication number: CN2177263Y
Application number: CN 93247224
Authority: CN
Inventors: 黄康
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-12-14
Filing date: 1993-12-14
Publication date: 1994-09-14
Anticipated expiration: 2003-12-14

Abstract

The utility model provides an anti-theft alarm, composed of a sensor, a lock and control switch, a loudspeaker, an integrated block, universal resistors and capacitors, etc., wherein, the sensor is a simple vibration sensor. The touched sensor immediately triggers the device to alarm and self lock. The lock and control switch is controlled by the lock column on a lock cover. The utility model has the advantages of simple structure, convenient operation, low price and safe operation. The utility model is suitable for anti-theft alarm in the places such as families, storehouses, hotels, etc.

Description

Anti-theft alarm

The utility model relates to a kind of warning device, particularly relates to a kind of burglar alarm.

Known burglar alarm adopts infrared ray or induction type burglary-resisting system, its complex structure, installation workload are big, operation require high, expense is expensive and very unreliable.

The purpose of this utility model is to provide a kind of simple in structure, easy for installation, simple and easy, cheap and service-strong burglar alarm of operation.

The utility model is made up of parts such as providing direct supply, vibration transducer, lock-controlled switch, loudspeaker, integrated package and general resistance capacitance for oneself, its characteristics are that the anti-theft warning circuit of this device triggers startup by a simple and easy vibration transducer and reports to the police, this sensor one end links to each other with lock-controlled switch, and the other end links to each other with input trigger circuit.Provide direct supply for oneself and be connected with external power supply, and be connected with lock-controlled switch through diode.Even lose external power supply, device still can be reported to the police as usual.Lock-controlled switch is fixed with upper and lower lock dog by the control of the lock on the locking closure on the lock, after lock turned an angle, following lock dog withstood lock-controlled switch, connects warning circuit.When the lock-controlled switch disconnecting circuit, external power supply is only given and is provided the direct supply charging for oneself, and main circuit is not worked.When lock-controlled switch connect circuit but sensor when not being touched circuit the low level input is only arranged, also do not have high level output, circuit is in off working state, does not promptly report to the police.But after sensor was touched, circuit promptly had the high level input, and through vibration, amplification, output high frequency high level promotes loudspeaker and reports to the police.

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 burglar alarm schematic circuit;

Fig. 2 burglar alarm mounting structure figure;

Fig. 3 locking closure structural drawing.

Fig. 1 is the utility model schematic circuit. External power supply is through socket 8, protection diode D₁To providing dc source 5 charging for oneself, two power supplys all can be through lock-controlled switch 4 places in circuit, wherein vibrating sensor 18 with by sensor 18, discrete component capacitor C₁、C ₂, resistance R₁、R ₂、R ₃、R ₅And ic chip₁The input trigger circuit that middle relatively trigger a forms joins, and its signal is sent into by capacitor C through pin 5₄, resistance R₄、R ₆、R ₉And ic chip₁In the ramp generator that forms of operational amplifier b, again via resistance R₂、R ₃、R ₁₀、R ₁₁With ic chip₁In the oblique wave inversion device that forms of Schmidt trigger c, the counter-rotating input is by capacitor C₃, resistance R₇、R ₈、R ₁₂And IC₁In the voltage controlled oscillator vibration that forms of oscillator d send into by resistance R₁₃, capacitor C₅、C ₆And ic chip₂The power amplifier that forms also finally exports loudspeaker 7 to.

When switch 4 is opened, except external power supply can be through socket 8 and diode D₁To providing dc source 5 chargings for oneself, circuit is not worked. When lock control 4 switch connection power supplys, but vibrating sensor 18 is not when being touched, because of C₁、C ₂Terminal voltage does not have jump signal, IC₁A only imports a low level through pin 3, by IC₁What d output 14 was exported also is a direct current low level signal, because capacitor C₅、C ₆Every straight effect, ic chip₂Be in idle power save mode. When being touched, lock-controlled switch 4 pluggeds and vibrating sensor 18 enabling signal is arranged through C₂Add to IC₁The pin 3 of a makes it high level pulse occur, through pin 1 output and through R₅Feed back to pin 3, making its self-sustaining is self-locking. This high level exports ic chip to through counter-rotating, vibration₂, behind its power amplifier, export to again loudspeaker 7, send alarm signal continuously until till owner opens lock-controlled switch, cuts off all power with key. Even otherwise external power supply has a power failure or cut, this warning device still can continue to report to the police.

Fig. 2 is the utility model mounting structure figure. On the boxlike outer cover 1 interior base 6 loudspeaker 7, external electric supply socket 8 and wiring board 3 are housed. Except whole discrete component resistance capacitances and integrated package are housed, lock-controlled switch 4, vibrating sensor 18 and dc source 5 also are housed and contact with boxlike outer cover 1 through upper frame 2 on this wiring board 3. Can whole discrepancy in boxlike outer cover 1 when locking closure 9 is not closed after upper frame 2, wiring board 3 and base 6 unify with bolt. When locking closure 9 was closed, the one side was stuck on outer cover 1 internal stop 15 with boss 17, and opposite side then will be stuck on the block 16 by dead bolt 14.

Fig. 3 is locking closure 9 structural drawing of utility model.One lock 11 is housed on the locking closure 9, is fixed with lock dog 12, following lock dog 13 on it, last lock dog 12 is used to control stretching out and retraction locking closure 9 of

dead bolt

14,13 contacts that are used to switch on and off lock-switch 4 of following lock dog.Stage clip 10 then helps the discrepancy of dead bolt 14.After key inserted the lockhole of lock 11 and turns an angle, last lock dog 12 promptly ejected dead bolt 14, makes it block block 16, covers firm whole burglar alarm, and 13 of following lock dogs withstand lock-controlled switch 4, made it connect warning circuit, but made it be in duty.Locking closure 9 is not only controlled lock-controlled switch 4, also controls the discrepancy of whole device in boxlike outer cover 1.

The utility model embodiment:

Ic chip ₁Adopt HK0811, IC ₂Adopt HK08001, loudspeaker is 8 Ω, and φ 2 1/2, and " discrete component is commercially available electron device, and is surplus for making device by oneself.

The utility model simple structure, easy to operate, cheap and use reliably is applicable to that family, warehouse, market, hotel etc. locate burglar alarm.

Claims

1, a kind of burglar alarm is made up of power supply, switch, wiring board (3), sensor (18) and loudspeaker parts such as (7), it is characterized in that:

1) this device also has one to provide direct supply (5) for oneself except that external power supply is arranged, and this power supply (5) is through diode D ₁Link to each other with external power supply, and link to each other with lock-controlled switch 4;

2) sensor (18) is a simple and easy vibration transducer, and its end links to each other with lock-controlled switch (4), and the other end links to each other with input trigger circuit;

3) switch is a lock-controlled switch (4), control the whole device circuit of this switch (4) break-make by the lock (11) on the locking closure (9), be fixed with upper and lower lock dog (12,13) on the lock (11), after lock turns an angle, last lock dog (12) ejects dead bolt (14), following lock dog (13) withstands lock-controlled switch (4), connects warning circuit.

2, according to the described device of claim 1, it is characterized in that this device by overall package in boxlike outer cover (1), dead bolt (14) and stage clip (10) are housed on its locking closure (9), link stopper (16) is housed on the boxlike outer cover (1), when last lock dog (12) rotated and eject dead bolt (14), dead bolt was stuck on the block (16), and locking closure (9) is provided with boss (17), locking closure (9) is when closing, and boss (17) is stuck on the block (15) on the outer cover (1).

3,, it is characterized in that external power supply is through socket (8), protection diode D according to the described device of claim 2 ₁To providing direct supply (5) charging for oneself, two power supplys all can be through lock-controlled switch (4) place in circuit, vibration transducer (18) joins with input trigger circuit, its signal is sent into ramp generator through pin (5), again through oblique wave inversion device counter-rotating input voltage controlled oscillator, power amplifier is sent in vibration, finally exports loudspeaker (7) to.

4, according to the described device of claim 4, it is characterized in that ic chip ₁Adopt HK0811, IC ₂Adopt HK08001.