CN202838565U - Glass theft preventer - Google Patents
Glass theft preventer Download PDFInfo
- Publication number
- CN202838565U CN202838565U CN 201220537584 CN201220537584U CN202838565U CN 202838565 U CN202838565 U CN 202838565U CN 201220537584 CN201220537584 CN 201220537584 CN 201220537584 U CN201220537584 U CN 201220537584U CN 202838565 U CN202838565 U CN 202838565U
- Authority
- CN
- China
- Prior art keywords
- infrared
- tube
- receiving tube
- normally closed
- glass
- 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
A glass theft preventer comprises an infrared transmitting tube, an infrared receiving tube, optical fiber, a normally closed relay and an alarm. The optical fiber is adhered to the lower surface of glass or between two glass layers in a wavy form. A transmitting end of the infrared transmitting tube and a receiving end of the infrared receiving tube are installed at two ends of the optical fiber. The transmitting end of the infrared transmitting tube does not face to the receiving end of the infrared receiving tube. After the optical fiber breaks, infrared emitted from the infrared transmitting tube is not allowed to enter the infrared receiving tube. The normally closed relay is serially connected in a circuit which the infrared receiving tube locates in. The alarm is connected to a circuit controlled by the normally closed relay. When the infrared receiving tube is on, the normally closed relay turns off power of the alarm. When the infrared receiving tube is off, the normally closed relay turns on power of the alarm and the alarm starts alarming. The glass theft preventer is simple in structure, applicable to common glass, low in mounting and service costs and high in reliability.
Description
Technical field
A kind of glass anti-theft device.
Background technology
At present, department store, mobile phone shop and jewelry store etc. all use show case, and glass door is all used in a lot of places, and existing glass can not give the alarm after being broken usually automatically, is suffering that robbery, theft can not in time give the alarm when destroying.Though existing wired net burglar-proof glazing has anti-theft feature, its production technology is complicated, and price is higher, and if existing sales counter to use, must change glass, expend larger.
Summary of the invention
The utility model provides a kind of glass anti-theft device, this device by sticking to glass downside or be clipped in the infrared ray that optical fiber between the layer glass conducts infrared transmitting tube directive infrared receiving tube, when glass is broken, optical fiber ruptures thereupon, infrared ray can not be injected infrared receiving tube, not conducting of infrared receiving tube, the normally closed relay of connecting with infrared receiving tube is connected the power supply of warning horn, and warning horn namely gives the alarm.
The technical scheme that its technical matters that solves the utility model adopts is: this glass anti-theft device is comprised of infrared transmitting tube, infrared receiving tube, optical fiber, normally closed relay and warning horn, the optical fiber undulate sticks to the downside of glass or is clipped between the layer glass, the transmitting terminal of infrared transmitting tube and the receiving end of infrared receiving tube are installed in the two ends of optical fiber, and towards the receiving end of infrared receiving tube, the infrared ray that infrared transmitting tube penetrates after fibercuts can not enter infrared receiving tube to the transmitting terminal of infrared transmitting tube.
Normally closed relay is connected in the circuit at infrared receiving tube place, and warning horn is connected in the circuit of normally closed relay control, during the infrared receiving tube conducting, normally closed relay breakage alert device power supply, during not conducting of infrared receiving tube, normally closed relay is connected the warning horn power supply, and warning horn namely starts warning.
The beneficial effects of the utility model are, this glass anti-theft device is simple in structure, can be installed on the simple glass, and cost of installation and use is cheap, good reliability.
Description of drawings
Fig. 1 is infrared transmitting tube of the present utility model, infrared receiving tube and fiber section structural representation.
(1) glass among the figure, (2) infrared transmitting tube, (3) optical fiber, (4) infrared receiving tube.
Embodiment
This glass anti-theft device is comprised of infrared transmitting tube (2), infrared receiving tube (4), optical fiber (3), normally closed relay and warning horn, the optical fiber undulate sticks to the downside of glass (1) or is clipped between the layer glass, the transmitting terminal of infrared transmitting tube and the receiving end of infrared receiving tube are installed in the two ends of optical fiber, and towards the receiving end of infrared receiving tube, the infrared ray that infrared transmitting tube penetrates after fibercuts can not enter infrared receiving tube to the transmitting terminal of infrared transmitting tube.
Normally closed relay is connected in the circuit at infrared receiving tube place, and warning horn is connected in the circuit of normally closed relay control, during the infrared receiving tube conducting, normally closed relay breakage alert device power supply, during not conducting of infrared receiving tube, normally closed relay is connected the warning horn power supply, and warning horn namely starts warning.
Above disclosed only be the application's a specific embodiment, but the application is not limited thereto, the thinkable variation of any those skilled in the art all should fall in the application's the protection domain.
Claims (2)
1. glass anti-theft device, formed by infrared transmitting tube, infrared receiving tube, optical fiber, normally closed relay and warning horn, it is characterized in that: the optical fiber undulate sticks to the downside of glass or is clipped between the layer glass, the transmitting terminal of infrared transmitting tube and the receiving end of infrared receiving tube are installed in the two ends of optical fiber, and the transmitting terminal of infrared transmitting tube is not towards the receiving end of infrared receiving tube.
2. glass anti-theft device according to claim 1, it is characterized in that: normally closed relay is connected in the circuit at infrared receiving tube place, warning horn is connected in the circuit of normally closed relay control, during the infrared receiving tube conducting, normally closed relay breakage alert device power supply, during not conducting of infrared receiving tube, normally closed relay is connected the warning horn power supply, and warning horn namely starts warning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220537584 CN202838565U (en) | 2012-10-20 | 2012-10-20 | Glass theft preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220537584 CN202838565U (en) | 2012-10-20 | 2012-10-20 | Glass theft preventer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202838565U true CN202838565U (en) | 2013-03-27 |
Family
ID=47950214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220537584 Expired - Fee Related CN202838565U (en) | 2012-10-20 | 2012-10-20 | Glass theft preventer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202838565U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102881096A (en) * | 2012-10-20 | 2013-01-16 | 李良杰 | Glass anti-theft device |
-
2012
- 2012-10-20 CN CN 201220537584 patent/CN202838565U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102881096A (en) * | 2012-10-20 | 2013-01-16 | 李良杰 | Glass anti-theft device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20131020 |