CN2867479Y

CN2867479Y - Anti-theft alarming device

Info

Publication number: CN2867479Y
Application number: CN 200620025250
Authority: CN
Inventors: 李克旺
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-01-24
Filing date: 2006-01-24
Publication date: 2007-02-07
Anticipated expiration: 2016-01-24

Abstract

The utility model relates to an anti-theft alarm apparatus, in which a casing (1) is fixed on the wall outside the door and provided with a lock head (2) that can be locked by inserting into key, the lock head (2) and a contact switch (3) are fixed at inner side of the casing (1), the contact switch (3) is controlled by the tongue of the lock head (2), an alarm bell (4) and a contactor (5) are fixed in the middle of the casing (1), the power supply (6) is 220 V AC, and a probe switch (7) is connected to the contactor (5) and fixed inside the door frame regula (8). For anti-theft, lock the lock head (2) with key to make its tongue to support on the touch switch (3), the power supply is at off-state because the probe of the probe switch (7) supports on the one side of the door and is at on-state once the door is open by thief after breaking the lock and the probe of the probe switch (7) is ejected immediately, then the alarm bell (4) rings; and open the lock head (2) at other times, then the alarm bell (4) will not ring when open the door. The utility model has the advantages of simple structure, convenient installation, small volume, light weight, good safety and reliability, low cost, and wide application range.

Description

Burglar alarm

Technical field:

The utility model relates to a kind of alarm, particularly relates to a kind of burglar alarm that is widely used on town and country resident family, enterprises and institutions and the automobile.

Background technology:

As everyone knows, at present, burglar alarm is of a great variety, but complex structure, and price is expensive, installs loaded down with trivial detailsly, and common wage-earners are difficult to acceptance.

Summary of the invention:

Fundamental purpose of the present utility model be to overcome above deficiency and provide a kind of simple in structure, be convenient to install, safe and reliable, low-cost burglar alarm.

The technical scheme that its technical matters that solves the utility model adopts is: it is made up of power supply, alarm bell, switch, it is characterized in that: shell 1 is fixed on big wall place outdoors, the keyhole that has tapered end 2 on the shell 1, tapered end 2 and contact switch 3 are fixed on the inboard of shell 1, tongue control contact switch 3 with tapered end 2, the center fixed of shell 1 has alarm bell 4 and contactor 5, and power supply 6 is the 220V alternating current, and the probe switch 7 that is connected with contactor 5 is fixed on the inboard of doorframe edge strip 8.

The utility model can also adopt following technical measures: described power supply 6 can also adopt battery; Described alarm bell 4 can also adopt loudspeaker.

Advantage and the good effect that the utlity model has are: simple in structure, be convenient to install, volume is little, in light weight, safe and reliable, cost is low, applied range can be widely used on town and country resident family, enterprises and institutions and the automobile.

Description of drawings:

Fig. 1 is the structure and the circuit connection diagram of burglar alarm.

Fig. 2 is probe switch 7 installation site synoptic diagram.

Among Fig. 1, Fig. 2: 1. shell, 2. tapered end, 3. contact switch, 4. alarm bell, 5. contactor, 6. power supply, 7. probe switch, 8. doorframe edge strip.

Embodiment:

For further understanding summary of the invention characteristics of the present utility model and effect following examples for example now, and conjunction with figs. is described in detail as follows, and sees also Fig. 1, Fig. 2.

As shown in Figure 1 and Figure 2: shell 1 is fixed on big wall place outdoors, the keyhole that has tapered end 2 on the shell 1, insert key and can pin tapered end 2, tapered end 2 and contact switch 3 are fixed on shell 1 inboard on one side, tongue control contact switch 3 with tapered end 2, the center fixed of shell 1 has alarm bell 4 and contactor 5, and power supply 6 is the 220V alternating current, and the probe switch 7 that is connected with contactor 5 is fixed on the inboard of doorframe edge strip 8.A plurality of binding post L on the contactor 5 ₁, L ₂, L ₃, A ₁And T ₁, T ₂, T ₃, A ₂, in the power lead one is connected on 1 B of contact switch 3, and another root is connected on the binding post T of contactor 5 ₃On, another of contact switch 3 C receives binding post T ₁On, binding post T ₁Again with the binding post A of contactor 5 lower ends ₁Connect an end of alarm bell 4 electric wire and binding post L ₁Connect the other end and binding post L ₃Connect 1 E and binding post T on the probe switch 7 ₃Connect binding post L ₂With binding post T ₃Connect, thereby form the loop of an electricity.During use, when the people go out or night for antitheft, at first pin tapered end 2 with key, allow its tongue withstand contact switch 3, at this moment, power supply 6 is connected, again because of, another D and binding post T ₂Connect binding post T ₂Binding post A with contactor 5 lower ends ₂Connect, a side at gate heads on the probe of probe switch 7 always, makes probe switch 7 be in off-state, in case the thief forces open the door the gate is opened, and the probe of probe switch 7 ejects at once, and then power supply 6 is connected, alarm bell 4 sound, and signal is reported to the police.Because of binding post L ₂With binding post T ₃Connect, then T ₂The normal suction, even the thief shuts the door, alarm bell 4 is still ringing, and have man-hour in the man daytime, can open tapered end 2 outages, at this moment comes in and goes out when opening the door, and alarm bell 4 does not ring.In addition, power supply 6 can also adopt battery, and alarm bell 4 can also adopt loudspeaker.

Its advantage is: simple in structure, be convenient to install, volume is little, in light weight, safe and reliable, cost is low, Applied range can be widely used on town and country resident family, enterprises and institutions and the automobile.

Claims

1, a kind of burglar alarm, it is made up of power supply, alarm bell, switch, it is characterized in that: shell (1) is fixed on big wall place outdoors, the keyhole that has tapered end (2) on the shell (1), tapered end (2) and contact switch (3) are fixed on the inboard of shell (1), tongue control contact switch (3) with tapered end (2), the center fixed of shell (1) has alarm bell (4) and contactor (5), power supply (6) is the 220V alternating current, and the probe switch (7) that is connected with contactor (5) is fixed on the inboard of doorframe edge strip (8).

2, burglar alarm according to claim 1 is characterized in that: described power supply (6) can also adopt battery.

3, burglar alarm according to claim 1 is characterized in that: described alarm bell (4) can also adopt loudspeaker.