CN2757239Y - Warning device - Google Patents
Warning device Download PDFInfo
- Publication number
- CN2757239Y CN2757239Y CN 200420109490 CN200420109490U CN2757239Y CN 2757239 Y CN2757239 Y CN 2757239Y CN 200420109490 CN200420109490 CN 200420109490 CN 200420109490 U CN200420109490 U CN 200420109490U CN 2757239 Y CN2757239 Y CN 2757239Y
- Authority
- CN
- China
- Prior art keywords
- producing device
- sound
- sound producing
- copper wire
- short circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Burglar Alarm Systems (AREA)
Abstract
The utility model relates to a warning device which is provided with a sound producing device. The sound producing device is connected with a power supply by a conducting wire, and the connected conducting wire is provided with a switch and a protective resistor. The sound producing device is connected in parallel with a thin short circuit copper wire. The sound producing device is composed of a loudspeaker and a sound producing integrated block which is connected with the loudspeaker in series. When the utility model is used, the thin short circuit copper wire is connected with both ends of a door or a window. When the switch of the power supply is closed, the copper wire makes the sound producing device form short circuit and the sound producing device can not produce sound. When the door or the window is opened by a thief through illegal means, the thin copper wire is broken, and the circuit of the sound producing device is conducted, so alarm sound is sent out.
Description
Technical field
The utility model relates to a kind of anti-theft device, particularly a kind of door and window burglar alarm.
Background technology
Burglar alarm mostly is to be used on the safety cabinet in the prior art, and the simplified alarm device that is used for door and window seldom, has only the warning device on the lock that is used for door on a small quantity.
Summary of the invention
The technical problems to be solved in the utility model is at the deficiencies in the prior art, has proposed a kind of door and window burglar alarm.
The technical problems to be solved in the utility model is achieved through the following technical solutions; a kind of warning device; be characterized in: it is provided with a sound-producing device; sound-producing device joins by lead and power supply; on the lead that connects switch and protective resistance are housed also, described sound-producing device is also in parallel with a thin short circuit copper cash.During use thin short circuit copper cash is connected on the two ends of door or window, the power turn-on switch, at this moment, fine copper wire is with the sound-producing device short circuit, and then sound-producing device can sounding.Open door by illegal means or during window as the thief, fine copper wire will be bumped disconnectedly, then the circuit of sound-producing device is connected, and will send chimes of doom.
The technical problems to be solved in the utility model can also come further to realize by the following technical programs, and described sound-producing device is that a loudspeaker and the sounding of connect with loudspeaker are integrated soon.
Compared with prior art, the utility model is a simple and easy phonation circuit, the fine copper wire at the two ends by being located at the door or the unlatching of window is with the sound-producing device short circuit, when the thief opens door or window by illegal means, fine copper wire will be bumped disconnected, then the circuit of sound-producing device is connected, and will send chimes of doom.The utility model is simple in structure, easy to use, good anti-theft effect.
Description of drawings
Accompanying drawing is an electrical block diagram of the present utility model.
Embodiment
A kind of warning device, it is provided with a sound-producing device 2, and sound-producing device 2 joins by lead and power supply 5, on the lead that connects switch 6 and protective resistance 4 is housed also, and described sound-producing device 2 is also in parallel with a thin short circuit copper cash 1.During use thin short circuit copper cash 1 is connected on the two ends of door or window, the power turn-on switch, at this moment, fine copper wire is with the sound-producing device short circuit, and then sound-producing device can sounding.Open door by illegal means or during window as the thief, fine copper wire 1 will be bumped disconnectedly, then the circuit of sound-producing device 2 is connected, and will send chimes of doom.Described sound-producing device 2 is a loudspeaker and the sounding integrated fast 3 of connecting with loudspeaker.
Claims (2)
1. warning device; it is characterized in that: it is provided with a sound-producing device (2); sound-producing device (2) joins by lead and power supply (5), on the lead that connects switch (6) and protective resistance (4) is housed also, and described sound-producing device (2) is also in parallel with a thin short circuit copper cash (1).
2. warning device according to claim 1 is characterized in that: described sound-producing device (2) is a loudspeaker and the sounding of connecting with loudspeaker integrated fast (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420109490 CN2757239Y (en) | 2004-12-07 | 2004-12-07 | Warning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420109490 CN2757239Y (en) | 2004-12-07 | 2004-12-07 | Warning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2757239Y true CN2757239Y (en) | 2006-02-08 |
Family
ID=35965626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420109490 Expired - Fee Related CN2757239Y (en) | 2004-12-07 | 2004-12-07 | Warning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2757239Y (en) |
-
2004
- 2004-12-07 CN CN 200420109490 patent/CN2757239Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |