CN203192138U - Anti-theft alarm forming self-locking circuit by trigger - Google Patents
Anti-theft alarm forming self-locking circuit by trigger Download PDFInfo
- Publication number
- CN203192138U CN203192138U CN 201320177935 CN201320177935U CN203192138U CN 203192138 U CN203192138 U CN 203192138U CN 201320177935 CN201320177935 CN 201320177935 CN 201320177935 U CN201320177935 U CN 201320177935U CN 203192138 U CN203192138 U CN 203192138U
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- China
- Prior art keywords
- alarm
- normally
- relay
- gate
- switch
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Abstract
The utility model discloses an anti-theft alarm forming a self-locking circuit by trigger. The alarm is suitable for anti-theft warning in the fields of household, automobiles and the like. According to the alarm, a normally-open relay and a normally-closed relay are connected in a circuit in parallel, and a normally-open switch and a normally-closed switch are connected in parallel, and then the self-locking alarm circuit can be formed after the alarm is triggered; the excitation of the normally-open relay is serially connected to the circuit of an alarm trigger point, and the control switch thereof is connected to the circuit of an alarm loudspeaker and a warning lamp in series; the excitation of the normally-closed relay is connected to the alarm circuit in series, and the control switch thereof is connected to the both ends of the normally-open switch in parallel; after the alarm is triggered, the normally-open switch and the normally-closed switch are closed simultaneously, even if the normally-open switch is broken after that, a current still passes through the normally-closed switch to electrify the alarm circuit; and the alarm is stopped only by manually controlling the switch to be off. The alarm provided by the utility model has the advantage of being not easy to crack, and is higher in practicability compared with the existing common alarms in the market.
Description
Technical field
The utility model relates to a kind of burglar alarm, is applicable to fields such as household, automobile anti-theft alarm.
Background technology
The cell management of a lot of buildings stipulates that for attractive in appearance the exterior window of resident family can only be installed invisible anti-theft network.Invisible anti-theft network mainly is made up of wire rope and aluminium section bar shell, and its advantage is to prevent that clothing from blowing, being easy to when meeting fire alarm cut short escape etc. off, but its anti-theft feature is not strong, the theft of entering house after being cut off by the robber easily.
Also have at invisible antitheft at present and connect burglar alarm on the net.But burglar alarm on the market comprises the alarm that is installed on the door now, eliminates warning triggered easy destroyed its circuit in back by the robber, does not reach expected effect.
The utility model content
At the problems referred to above, the utility model provides a kind of burglar alarm of improvement, and this alarm can form the self-locking circuit in the back that is triggered, and the robber is difficult to destroy circuit at the trigger switch place, can only could eliminate warning by the switch of setting.This burglar alarm is applicable to the installation of household door and window, and it is online to be particularly useful for being connected invisible antitheft.
A kind of triggering forms latching circuit formula burglar alarm, comprises power supply, loudspeaker, warning lamp, gauge tap, especially, also comprises first relay and second relay; Described first relay comprises first relay excitation and first gate-controlled switch, and described second relay comprises second relay excitation and second gate-controlled switch; Described first gate-controlled switch is normally closed switch, and second gate-controlled switch is normal open switch; Power supply, gauge tap, loudspeaker, warning lamp, second gate-controlled switch, second relay excitation are cascaded, and first gate-controlled switch and second gate-controlled switch are connected in parallel; Be cascaded formed integral body and power supply of alarm actuating contact and first relay excitation is connected in parallel.
Under the state that gauge tap is connected, first relay excitation, alarm actuating contact and power supply form the series circuit of "on" position; Under the state of first relay excitation energising, first gate-controlled switch is off state, and therefore power supply, loudspeaker, warning lamp, gauge tap and second relay excitation with first gate-controlled switch formation series circuit is in off state; Under the state that second relay excitation opens circuit, second gate-controlled switch is also open mode.
The alarm actuating contact of alarm can be can realize conducting on the electric conductor as the wire rope of: Door-lock bolt folding contact position, anti-theft net etc.
When the robber destroys door lock or anti-theft net, then cause alarm actuating contact to open circuit, the first relay excitation dead electricity causes the first gate-controlled switch closure, and second relay excitation gets the electric second gate-controlled switch closure that causes simultaneously, and loudspeaker and warning lamp get electric work.Even this moment robber reconnection alarm actuating contact because second relay excitation and second gate-controlled switch form latching circuit, loudspeaker and warning lamp will still can get electric work.So far can only could eliminate warning by artificial open-circuit operation gauge tap.
The alarm that the utility model provides has the advantage that is difficult for being cracked compared with the existing common alarm in market, has more practicality.
Description of drawings
Fig. 1 is for triggering the burglar alarm circuit diagram that forms latching circuit;
Reference numeral: 1, power supply; 2, anti-theft net; 3, first relay; 3-1, first relay excitation; 3-2, first gate-controlled switch; 4, second relay; 4-1 second relay excitation; 4-2, second gate-controlled switch; 5, gauge tap; 6, loudspeaker; 7, warning lamp.
Embodiment
Specific embodiment of the utility model is applied in the invisible anti-theft network for a kind of triggering forms latching circuit formula burglar alarm, describes in detail by reference to the accompanying drawings:
The first gate-controlled switch 3-2, the second relay excitation 4-1, gauge tap 5, loudspeaker 6, warning lamp 7 and power supply 1 are cascaded, the second gate-controlled switch 4-2 is in parallel with the first gate-controlled switch 3-1, and connect formed integral body and power supply 1 of the wire rope in the anti-theft net 2 and the first relay excitation 3-1 is connected in parallel; The first gate-controlled switch 3-2 is normal open switch, and the second gate-controlled switch 4-2 is normally closed switch; Gauge tap 5 is kept closed, and must manual operation just can open; Under the situation of power supply 1 operate as normal, the first relay excitation 3-1, power supply 1 and anti-theft net 2 form the series circuit of "on" position; Under the state of first relay excitation 3-1 energising, the first gate-controlled switch 3-2 is off state, and therefore power supply 1, loudspeaker 6, warning lamp 7, gauge tap 5 and the second relay excitation 4-1 with first gate-controlled switch 3-2 formation series circuit is in off state; The second relay excitation 4-1 is under the off state, and the second gate-controlled switch 4-2 also is off state.
Above-mentioned gauge tap 5 places the master room concealed location of household usually.When the robber cuts off the wire rope of anti-theft net, the first relay excitation 3-1 opens circuit, the first gate-controlled switch 3-2 closure, the power supply 1, loudspeaker 6, warning lamp 7, gauge tap 5 and the second relay excitation 4-1 that form series circuit with the first gate-controlled switch 3-2 form the "on" position series circuit, and loudspeaker 6 and warning lamp 7 give the alarm; Under the second relay excitation 4-1 "on" position, also trigger the closed energising of the second gate-controlled switch 4-2; Even this moment, the robber plugged into back the wire rope of anti-theft net, make first relay excitation 3-1 energising, triggering the first gate-controlled switch 3-2 opens circuit, but electric current still can pass through the second gate-controlled switch 4-2, make the second gate-controlled switch 4-2, power supply 1, loudspeaker 6, warning lamp 7, gauge tap 5 and the second relay excitation 4-1 form the "on" position series circuit, namely loudspeaker 6 and warning lamp 7 still are alarm condition; Then must by people for open gauge tap 5 just can make second circuit open circuit if need to remove warning device this moment, and loudspeaker 6 and warning lamp 7 stop alarm.
Claims (2)
1. one kind is triggered formation latching circuit formula burglar alarm, comprises power supply, loudspeaker, warning lamp, gauge tap, it is characterized in that, also comprises first relay and second relay; Described first relay comprises first relay excitation and first gate-controlled switch, and described second relay comprises second relay excitation and second gate-controlled switch; The described first gate-controlled switch normally closed switch, second gate-controlled switch is normal open switch; Power supply, gauge tap, loudspeaker, warning lamp, second gate-controlled switch, second relay excitation are cascaded, and first gate-controlled switch and second gate-controlled switch are connected in parallel; Be cascaded formed integral body and power supply of alarm actuating contact and first relay excitation is connected in parallel.
2. a kind of triggering according to claim 1 forms latching circuit formula burglar alarm, it is characterized in that described alarm actuating contact is wire rope or the Door-lock bolt in the anti-theft net.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320177935 CN203192138U (en) | 2013-04-10 | 2013-04-10 | Anti-theft alarm forming self-locking circuit by trigger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320177935 CN203192138U (en) | 2013-04-10 | 2013-04-10 | Anti-theft alarm forming self-locking circuit by trigger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203192138U true CN203192138U (en) | 2013-09-11 |
Family
ID=49108979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320177935 Expired - Fee Related CN203192138U (en) | 2013-04-10 | 2013-04-10 | Anti-theft alarm forming self-locking circuit by trigger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203192138U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103909237A (en) * | 2014-03-20 | 2014-07-09 | 济钢集团有限公司 | Detecting and warning device for shaft breakage faults of chain belts of pig casting machine |
-
2013
- 2013-04-10 CN CN 201320177935 patent/CN203192138U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103909237A (en) * | 2014-03-20 | 2014-07-09 | 济钢集团有限公司 | Detecting and warning device for shaft breakage faults of chain belts of pig casting machine |
| CN103909237B (en) * | 2014-03-20 | 2016-08-24 | 济钢集团有限公司 | A kind of chain belt of pig machine off-axis fault detect and prior-warning 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: 20130911 Termination date: 20140410 |