CN201374111Y - Anti-theft device - Google Patents
Anti-theft device Download PDFInfo
- Publication number
- CN201374111Y CN201374111Y CN200920003089U CN200920003089U CN201374111Y CN 201374111 Y CN201374111 Y CN 201374111Y CN 200920003089 U CN200920003089 U CN 200920003089U CN 200920003089 U CN200920003089 U CN 200920003089U CN 201374111 Y CN201374111 Y CN 201374111Y
- Authority
- CN
- China
- Prior art keywords
- alarm
- inner core
- magnet
- metal sheet
- conductive metal
- 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 anti-theft device, which is characterized in that an inner core magnet is arranged inside an anti-theft alarm main body, and two ends of the inner core magnet are provided with a spring, and the other end of the spring is connected with the inner wall of the alarm main body, and the middle part of the inner core magnet is provided with a thin conductive metal sheet, and two contacts are arranged on the inner wall of the alarm corresponding to the thin conductive metal sheet, and the two contacts are connected with a power source, a switch and an alarm loudspeaker through conducting wires; a heteropolar magnet is additionally arranged below the alarm main body; when in use, the power source is turned on and the door is closed; if the door is forced to open by strangers, an alarming sound can be issued before the door is opened, thereby, the safety of the property is ensured.
Description
Technical field
The utility model belongs to the family expenses anti-theft device.
Background technology
Now the alarm kind of using is a lot, and a lot of advanced persons' technology is arranged, and also plays effect preferably, but complex structure mostly, and cost is higher, so promote, use has very big difficulty, particularly family expenses aspect.
Summary of the invention
The purpose of this utility model is to provide a kind of structure, family expenses anti-theft device that principle is simple, cheap, safe and convenient to use.
For reaching above-mentioned purpose, measure of the present utility model is: the inner core magnet of an activity is arranged in the alarm body, and respectively there is a spring at inner core magnet two ends, and the other end of spring is connected with the alarm inner body wall; The interposition of inner core magnet on top is equipped with a thin conductive metal sheet, with the corresponding alarm inner body wall of thin conductive metal sheet two contacts arranged, and two contacts link with lead and power supply, switch, alarming horn respectively; In this external bottom of alarm the opposite heteropole magnet of one magnetic pole is arranged in addition.
After having adopted above structure, owing to have only inside and outside two blocks of magnet, two springs, thereby simple in structure, cheap; Permanent magnet, its magnetic force is permanent, just exempts from but to safeguard, is not subjected to interference, the destruction of Other Instruments to use very safe, convenience, so that apply.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
Embodiment
Anti-theft device as shown in the figure in the inside of burglar alarm body 1, has an inner core magnet 2, and its two ends have the other end of spring 5 and spring 6, two springs to be connected with the inwall of alarm body 1; One thin conductive metal sheet 4 is arranged in the middle of the top of inner core magnet 2, have contact 7 and 9, two contacts, contact to be connected with power supply 10, switch 11, alarming horn 8 with lead respectively with the inwall of thin conductive metal sheet 4 corresponding alarm bodies 1; The opposite heteropole magnet 3 of one magnetic pole is arranged in addition in the bottom of alarm body 1.
During use, alarm body 1 is contained on the doorframe, heteropole magnet 3 is contained on the corresponding door, close behind the door evening, alarm body 1 and heteropole magnet 3 are on corresponding position, because the effect of heteropole suction, inner core magnet suction are greater than the elastic force of spring, thin conductive metal sheet 4 and two contacts are separated.When desire is used, turn on the power switch 11, because two contacts disconnect, alarming horn 8 is mute, also not power consumption.When the stranger opened, the heteropole magnet 3 on the door staggered mutually with inner core magnet 2, and the inner core magnet 2 that loses magnetic force contracts under the effect of elastic force, thin conductive metal sheet 4 contacts with contact 7, contact 9, has connected circuit, makes alarm send chimes of doom, remind owner, ensure the safety of property.
Claims (1)
1. anti-theft device, it is characterized in that: the inner core magnet of an activity is arranged in the alarm body, and respectively there is a spring at inner core magnet two ends, and the other end of spring is connected with the alarm inner body wall; The interposition of inner core magnet on top is equipped with a thin conductive metal sheet, with the corresponding alarm inner body wall of thin conductive metal sheet two contacts arranged, and two contacts link with lead and power supply, switch, alarming horn respectively; In this external bottom of alarm the opposite heteropole magnet of one magnetic pole is arranged in addition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920003089U CN201374111Y (en) | 2009-03-26 | 2009-03-26 | Anti-theft device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920003089U CN201374111Y (en) | 2009-03-26 | 2009-03-26 | Anti-theft device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201374111Y true CN201374111Y (en) | 2009-12-30 |
Family
ID=41500192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920003089U Expired - Fee Related CN201374111Y (en) | 2009-03-26 | 2009-03-26 | Anti-theft device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201374111Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112288976A (en) * | 2020-10-31 | 2021-01-29 | 贵州电网有限责任公司 | Microwave induction alarm device |
| CN112730939A (en) * | 2020-12-17 | 2021-04-30 | 广东电网有限责任公司佛山供电局 | Electricity larceny prevention device of electric energy meter terminal box |
-
2009
- 2009-03-26 CN CN200920003089U patent/CN201374111Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112288976A (en) * | 2020-10-31 | 2021-01-29 | 贵州电网有限责任公司 | Microwave induction alarm device |
| CN112288976B (en) * | 2020-10-31 | 2022-05-17 | 贵州电网有限责任公司 | Microwave induction alarm device |
| CN112730939A (en) * | 2020-12-17 | 2021-04-30 | 广东电网有限责任公司佛山供电局 | Electricity larceny prevention device of electric energy meter terminal box |
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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: 20091230 Termination date: 20100326 |