CN201562328U - Unwatched electric appliance anti-theft alarm device - Google Patents
Unwatched electric appliance anti-theft alarm device Download PDFInfo
- Publication number
- CN201562328U CN201562328U CN2009201258528U CN200920125852U CN201562328U CN 201562328 U CN201562328 U CN 201562328U CN 2009201258528 U CN2009201258528 U CN 2009201258528U CN 200920125852 U CN200920125852 U CN 200920125852U CN 201562328 U CN201562328 U CN 201562328U
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- CN
- China
- Prior art keywords
- alarm
- normally closed
- intermediate relay
- closed contact
- electric appliance
- 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 discloses an unwatched electric appliance anti-theft alarm device, which comprises a power source, a contactor, a power supply switch, an intermediate relay and a change-over switch. A circuit is formed by a normally closed contact of the intermediate relay, the power source, an alarm and a motor. Normally, an electric power circuit is electrified, a coil of the intermediate relay is sucked, the normally closed contact of the intermediate relay is connected with an electric whistle and opened, in other word, the circuit formed by the normally closed contact of the intermediate relay, the alarm and the power source is broken, and the alarm does not work. If the motor or an electric power line is stolen, the coil of the intermediate relay is not electrified, the normally closed contact contacts, the circuit formed by the normally closed contact of the intermediate relay, the alarm and the power source is on, and the alarm is electrified and gives an alarm. The device has the advantages of easy installation of circuits, simple structure, reliable running and low cost of used electric appliance elements.
Description
Technical field
The utility model relates to a kind of burglar alarm, the burglar alarm after particularly unattended electrical equipment quits work.
Background technology
The pumping plant of some Remotes, the unmanned guard in the back that shuts down is often taken place stolenly, has a strong impact on ordinary production.Prior art mainly adopts sensor to report to the police, and sensor alarm is installed complicated, and poor reliability is prone to wrong report, the relative price height.
Summary of the invention
At the deficiencies in the prior art, the utility model aims to provide a kind of simple installation, reliable, anti-theft warning circuit that cost is low.
The technical solution of the utility model: a kind of unmanned guard's electric appliance anti-theft warning device, comprise power supply, contactor, power switch, auxiliary reclay,, switch, the normally closed contact of described auxiliary reclay, power supply, alarm, motor are formed the loop.
Adopt the electric appliance anti-theft warning device of said structure, its course of work: just often, power circuit is charged, the adhesive of auxiliary reclay coil, the normally closed point that auxiliary reclay connects with alarm is opened, be the loop formed of the normally closed point of auxiliary reclay and alarm, power supply for opening circuit, alarm is not worked; If motor or line of electric force are stolen, the normally closed some contact of the coil losing electricity of auxiliary reclay, the loop of the normally closed point of auxiliary reclay and alarm, power supply formation is connected at this moment, and alarm gets electric alarm.
Described contactor comprises main contactor and auxiliary contactor, and the series connection of two contactors is interlocking state.
From technique scheme as can be known, the utility model device circuit is easily installed, and is simple in structure, reliable, and used electric elements price is low.
Description of drawings
Fig. 1 is a main electrical scheme circuit diagram of the present utility model;
Fig. 2 is control loop figure of the present utility model.
Embodiment
As shown in Figure 1 and Figure 2, SB1 and SB2 are for takeing on moving and stopping the motor button among the figure, QF opens for the outside 220V power supply sky of supplying with, whether selector switch SB3 control warning circuit is in running order, when main contactor KM1 closure, main contactor KM1 normally closed contact is opened, and motor M is in running status, and this moment, auxiliary contactor KM2 auxiliary reclay KA1 was in not duty.
After motor stops, selector switch is got to the warning circuit duty, this moment, main contactor KM1 opened, main contactor KM1 normally closed contact closure, auxiliary contactor KM2 coil is charged in running order, and external communication 220V power supply forms the loop through leader cable, auxiliary contactor KM2 to motor, series connection auxiliary reclay KA1 coil in the loop, auxiliary reclay KA1 operation, normally closed contact disconnects, and alarm HA does not send signal; If motor M or the stolen then auxiliary reclay of leader cable KA1 dead electricity, the normally closed contact closure, alarm sends signal, and electric whistle pipes, and the operator on duty in time takes measures to stop theft.
Claims (2)
1. unmanned guard's electric appliance anti-theft warning device, comprise power supply, contactor, power switch QF, auxiliary reclay KA1,, switch SB3, alarm HA, it is characterized in that the normally closed contact of described auxiliary reclay KA1, power supply, alarm HA, motor M are formed the loop.
2. unmanned guard's electric appliance anti-theft warning device according to claim 1 is characterized in that described contactor comprises main contactor KM1 and auxiliary contactor KM2, and the series connection of two contactors is interlocking state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201258528U CN201562328U (en) | 2009-11-25 | 2009-11-25 | Unwatched electric appliance anti-theft alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201258528U CN201562328U (en) | 2009-11-25 | 2009-11-25 | Unwatched electric appliance anti-theft alarm device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201562328U true CN201562328U (en) | 2010-08-25 |
Family
ID=42627476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201258528U Expired - Fee Related CN201562328U (en) | 2009-11-25 | 2009-11-25 | Unwatched electric appliance anti-theft alarm device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201562328U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107978107A (en) * | 2017-12-25 | 2018-05-01 | 泰豪科技股份有限公司 | A kind of device of alarming horn pulse operation |
-
2009
- 2009-11-25 CN CN2009201258528U patent/CN201562328U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107978107A (en) * | 2017-12-25 | 2018-05-01 | 泰豪科技股份有限公司 | A kind of device of alarming horn pulse operation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100825 Termination date: 20151125 |