CN201149714Y - Door alarm device - Google Patents
Door alarm device Download PDFInfo
- Publication number
- CN201149714Y CN201149714Y CNU2007201961656U CN200720196165U CN201149714Y CN 201149714 Y CN201149714 Y CN 201149714Y CN U2007201961656 U CNU2007201961656 U CN U2007201961656U CN 200720196165 U CN200720196165 U CN 200720196165U CN 201149714 Y CN201149714 Y CN 201149714Y
- Authority
- CN
- China
- Prior art keywords
- door
- alarm device
- warning circuit
- magnetic part
- door alarm
- 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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Abstract
The utility model relates to the safety protection field and provides a door alarm device. The door alarm device comprises an alarm circuit and a magnetic part; the alarm circuit comprises a battery; the alarm circuit is connected with the alarm, a magnetic sensitive switch and a resistor to construct a loop. The magnetic part has effects on the magnetic sensitive switch in the alarm circuit through the magnetic field to enable the alarm circuit to switch on or cut off. The door alarm device in the utility model adopts the variation of the magnetic field to switch on or cut off the alarm circuit so that the alarm purpose is realized; the door alarm device has the advantages of simple structure, improving the reliability and reducing the cost.
Description
Technical field
The utility model relates to safety-security area, more particularly, relates to a kind of door alarm device.
Background technology
Can be loaded on warning device on door more complicated all aspect structure or alarm circuit at present, not only reliability is low, and cost is higher.
For example a kind of door alarm device is by door switch and lock-switch are installed on door simultaneously, and after door was pried open, the door switch lock-switch was connected the alarm loop simultaneously, sends alerting signal.Hence one can see that, and the door alarm device of prior art must satisfy two switches simultaneously all to be connected the alarm loop and could realize reporting to the police, and lacks enough reliabilities, and the application of biswitch also causes the cost increase.
Therefore need a kind of new door alarm device, can not only simply but also reliably realize reporting to the police.
The utility model content
The purpose of this utility model is to provide a kind of door alarm device, is intended to solve the problem that the door alarm device reliability is low, cost is high of prior art.
In order to realize the utility model purpose, described door alarm device comprises warning circuit and magnetic part;
Described warning circuit comprises battery, and it links to each other with warning horn, links to each other with resistance with a magnetosensitive switch again, constitutes the loop.
Described magnetic part makes it be switched on or switched off described warning circuit by the magnetosensitive switch of the action of a magnetic field in warning circuit.
Preferably, described magnetic part is installed on the door, and warning circuit is installed in the corresponding position of doorframe.
Preferably, described magnetic part is installed on the doorframe, and warning circuit is installed in the corresponding position of door.
Preferably, described magnetic part is a magnet.
Preferably, described battery is a button cell.
Preferably, described magnetosensitive switch is the magnetic red pipe, and it is switched on or switched off described warning circuit under the action of a magnetic field of magnetic part.
Preferably, described warning horn is hummer or piezo, sounding when described magnetosensitive switch connection warning circuit.
Door alarm device of the present utility model comprises magnetic part and warning circuit, is installed in respectively on door or the doorframe, thereby in the moving process of door, utilizes the variation in magnetic field to be switched on or switched off warning circuit, reaches the purpose of warning.The utility model is simple in structure, has both improved reliability, has also reduced cost.
Description of drawings
Fig. 1 is a door alarm Unit Installation synoptic diagram in the utility model;
Fig. 2 is the schematic diagram of door alarm device among the embodiment of the present utility model.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
The disclosed door alarm device of the utility model comprises magnetic part and warning circuit, is installed in respectively on door or the doorframe.Warning circuit comprises battery, and it links to each other with warning horn, links to each other with resistance with a magnetosensitive switch again, constitutes the loop; Magnetic part makes it be switched on or switched off described warning circuit by the magnetosensitive switch of the action of a magnetic field in warning circuit, makes the warning horn sounding alarm.This device is simple and reliable, has both reached the purpose of reporting to the police effectively, has also reduced cost.
Fig. 1 is a door alarm Unit Installation synoptic diagram in the utility model.
In the utility model, magnetic part and warning circuit are installed in respectively on doorframe 1 and the door 2, and comprising: (1) magnetic part is installed on the doorframe 1, and warning circuit is installed on the door 2; (2) magnetic part is installed on the door 2, and warning circuit is installed on the doorframe 1.This dual mode can be realized the purpose of this utility model.
In one embodiment, magnetic part 11 is installed on the doorframe 1, and warning circuit 21 is installed on the door 2.
Fig. 2 is the schematic diagram of door alarm device among the embodiment of the present utility model.
In this embodiment, magnetic part is that (magnet, M), it is fixed on door 2 or the doorframe 1 magnet.
Warning circuit then is fixed on doorframe 1 or the door 2, comprise battery (battery, B), itself and warning horn (alarm, A) link to each other, again with a magnetosensitive switch (magnetic switch, MS), a resistance (resistance, R), (Key's regular tap K) links to each other, and constitutes the loop.Wherein: battery B can be a common batteries, for example a button cell; Warning horn A can be hummer or piezo, sends to pipe and report to the police when warning circuit is connected; Magnetosensitive switch MS can be magnetic red pipe, tongue tube or magnetic reed switch etc.When door was closed, it disconnected circuit under the effect in magnetic field; When door was opened, it connected circuit because of the variation in magnetic field.
Should be noted that present embodiment only is a typical case of the present utility model, the type of each element and quantity all can be adjusted flexibly.
The principle of work of this door alarm device is: during use K switch is closed, circuit is started working.When door was in closed condition, magnetosensitive switch MS disconnected warning circuit under the attraction of magnet M, and do not report to the police this moment; When door was pried open, magnetosensitive switch MS connected warning circuit under the effect of magnet M, sent and piped thereby drive warning horn A.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (7)
1, a kind of door alarm device is characterized in that, described door alarm device comprises warning circuit and magnetic part;
Described warning circuit comprises battery, and it links to each other with warning horn, links to each other with resistance with a magnetosensitive switch again, constitutes the loop;
Described magnetic part makes it be switched on or switched off described warning circuit by the magnetosensitive switch of the action of a magnetic field in warning circuit.
2, door alarm device according to claim 1 is characterized in that, described magnetic part is installed on the door, and warning circuit is installed in the corresponding position of doorframe.
3, door alarm device according to claim 1 is characterized in that, described magnetic part is installed on the doorframe, and warning circuit is installed in the corresponding position of door.
4, according to the described door alarm device of arbitrary claim in the claim 1 to 3, it is characterized in that described magnetic part is a magnet.
5, according to the described door alarm device of arbitrary claim in the claim 1 to 3, it is characterized in that described battery is a button cell.
According to the described door alarm device of arbitrary claim in the claim 1 to 3, it is characterized in that 6, described magnetosensitive switch is the magnetic red pipe, it is switched on or switched off described warning circuit under the action of a magnetic field of magnetic part.
According to the described door alarm device of arbitrary claim in the claim 1 to 3, it is characterized in that 7, described warning horn is hummer or piezo, sounding when described magnetosensitive switch connection warning circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201961656U CN201149714Y (en) | 2007-12-19 | 2007-12-19 | Door alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201961656U CN201149714Y (en) | 2007-12-19 | 2007-12-19 | Door alarm device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201149714Y true CN201149714Y (en) | 2008-11-12 |
Family
ID=40117485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201961656U Expired - Fee Related CN201149714Y (en) | 2007-12-19 | 2007-12-19 | Door alarm device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201149714Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106143408A (en) * | 2016-07-21 | 2016-11-23 | 贵州雅光电子科技股份有限公司 | A kind of new automobile anti-theft alarming method and device |
-
2007
- 2007-12-19 CN CNU2007201961656U patent/CN201149714Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106143408A (en) * | 2016-07-21 | 2016-11-23 | 贵州雅光电子科技股份有限公司 | A kind of new automobile anti-theft alarming method and device |
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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: 20081112 Termination date: 20161219 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |