CN200993812Y

CN200993812Y - Room door alarm device

Info

Publication number: CN200993812Y
Application number: CN 200620170824
Authority: CN
Inventors: 高军
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-12-28
Filing date: 2006-12-28
Publication date: 2007-12-19
Anticipated expiration: 2016-12-28

Abstract

The utility model relates to an alarm device used on the building door, which is provided with a proximity switch, a timer and a travel switch. The proximity switch integrates the timer and the travel switch to form a lag alarm switch, which is connected with the alarm. As long as the human body approaches the antitheft door and the set time of the timer comes, the alarm can also be given out even though the antitheft door is not contacted, so as to effectively prevent the illegal intruders from damaging the antitheft door and the alarm device.

Description

A kind of warning device that is used for door

Technical field

The utility model relates to a kind of burglar alarm equipment, more particularly, relates to a kind of warning device that is used on the buildings door.

Background technology

Along with increasing of variation, the especially break-ins case of Chinese current social public security situation, a lot of local community residents have all been loaded onto antitheft door.Because the robber often uses modern unlocking tool crime, though present antitheft door and door lock are all done firmlyer, but is often opened with unlocking tool by the robber.In order to solve the problem that prior art exists, people have invented some the safe-guard door lock and the antitheft door of warning function.As, " the Pickproof alarm antitheft door " that China Patent No. 02275688.4 proposes.The warning circuit of this patent is that machinery triggers structure, and door or lock just can send chimes of doom when being subjected to a certain degree vibration, bump.This class warning device is complex structure not only, and trouble is installed, and is difficult to be applicable to existing antitheft door or door.

Summary of the invention

At the deficiencies in the prior art, the purpose of this utility model provides a kind of warning device that is used for door, and it not only can start warning device under the situation that does not contact antitheft door, and easy to use.

The purpose of this utility model is achieved in that a kind of warning device that is used for door, comprise alarm and power supply, be provided with near switch, timer and travel switch, constitute the delayed alarm switch near switch in conjunction with timer and travel switch, the delayed alarm switch connects alarm.

On the basis of technique scheme, the utility model also has following further scheme:

Described timer is 10～30 seconds a electro-delay system.

Described timer has mechanism and the display screen of the time of setting.

Described delayed alarm switch connects wireless transmitter module.

Described have 2 at least near switch.

Describedly place in the shell near switch, timer, travel switch and alarm, fixed block is magnetic on the shell.

Advantage of the present utility model is as follows:

Because, be provided with near switch, timer and travel switch, constitute the delayed alarm switch near switch in conjunction with timer and travel switch, the delayed alarm switch connects alarm; Travel switch is placed between antitheft door and the doorframe, and when antitheft door and doorframe generation relative motion, travel switch is touched and is worked.So, needing only human body near antitheft door, the timing one of timer arrives, and also can not report to the police even contact antitheft door, helps anti-illegal-inbreak person to destroy antitheft door and warning device.Provide beneficial effect below in conjunction with principle of work of the present utility model:

The utility model can be fixed on antitheft door or the common wooden door, the working time of timer is arranged on 30 seconds.As the person of unblanking during near antitheft door, start immediately near switch, along with startup near switch, timer picks up counting: if the person of unblanking is a validated user, in general, in 20 second time, can finish the operation of unblanking and pushing antitheft door open, push antitheft door open after, the delayed alarm switch quits work under the effect of travel switch; If the person of unblanking is illegal user, even use unlocking tool to open the door, also often surpass 20 seconds from the time of observing hands-on, in case uncaging time surpasses 30 seconds that timer is provided with, alarm can send chimes of doom under the effect of delayed alarm switch.

The utility model takes to also have following advantage after the further technical scheme:

When described timer was 10～30 seconds a electro-delay system, electronic timer can use delay circuit or delay switch etc., not only helps to simplify the structure of timer, but also can reduce the manufacturing cost of timer.

When described timer has the mechanism of the time of setting and display screen, can be according to user's needs or environment for use setting-up time, so that adapt to the different users that require.

When described delayed alarm switch connects wireless transmitter module, can realize remote alarms.

Described when having 2 at least near switch, can be by different principle of work improve the reliability of warning device near switch.

Describedly place in the shell near switch, timer, travel switch and alarm, when being magnetic fixed block on the shell, not only the parts of warning device can be integrated in one, and need not to use securing member such as screw to be pull-in on warning device on steel door lock or the door.

Description of drawings

Fig. 1 is an electrical block diagram of the present utility model;

Fig. 2 is a structural representation of the present utility model.

Embodiment

Below in conjunction with accompanying drawing in detail embodiment of the present utility model is described in detail:

Referring to Fig. 1.A kind of warning device that is used for door, alarm 6 can use the sound-producing device more than 100 decibels.As, use existing electromagnetic type hummer or integral type hummer, or piezo buzzer, or the musical sound hummer etc.; Power supply can use dry cell.Being provided with near switch 3, is very ripe prior aries near switch 3, and it is widely used in fields such as control automatically.Near switch 3 can be capacitive approach switch or inductance approach switch etc.Sketch the principle of work of capacitive approach switch and inductance approach switch below respectively:

When object was shifted to capacitive approach switch, the specific inductive capacity of object and capacitive approach switch changed, and circuit state is also changed thereupon, and controllable switch turns on and off thus.Inspected object is not limited to metallic conductor, also can be the liquid of insulation.

Inductance approach switch is made of oscillator, on-off circuit and amplification output circuit.Oscillator can produce an alternating magnetic field.When metal objects such as key during, can produce eddy current, thereby cause oscillatory extinction, so that failure of oscillation near this magnetic field.The variation of oscillator vibration and failure of oscillation is through the electric signal of back level amplifying circuit processing, the turning on and off of may command inductance approach switch.

Travel switch 4 can use prior art, and travel switch 4 can be the inductive switch of door status switch or other form, or limit switch etc.The effect of travel switch 4 performances is: antitheft door is opened the back and is cut off circuit.The principle of work of common travel switch 4 is similar to button, and just the action of the contact of its control circuit break-make is not to use the hand direct control, but utilizes the moving component off-line operation of machinery.Referring to Fig. 2.As, travel switch 4 is installed in door lock 202 tops of antitheft door.When antitheft door cut out, the drive link 200 on the travel switch 4 can contact doorframe, and drive link 200 contact doorframes can make the switch connection in the travel switch 4; When antitheft door was opened to a certain position, drive link 200 separated with doorframe, and the conductive contact in the travel switch 4 disconnects.

Timer 2 can use prior art, the electronic timing circuit in the household appliances such as the similar electronic alarm clock of the structure of timer 2 and principle of work, televisor, air-conditioning.Timer 2 can use single-chip microcomputer or delay circuit, and timer 2 uses the delay circuit cost lower, and timer 2 uses single-chip microcomputer that timing can be set, and needs when timer 2 uses single-chip microcomputer to connect display screen 1 by circuit.The circuit that connects control timing on the timer 2 near the on-off circuit of switch 3, the circuit that inserts power supply near switch 3 connects power supply through travel switch 4, switch contact in the travel switch 4 is for often leaving, timer 2 can connect alarm 6 through driving circuit 5 or on-off circuit, promptly constitute the delayed alarm switch near switch 3 connects timer 2s and travel switch 4, the delayed alarm switch connects alarm 6.

Described timer 2 is 10～30 seconds a electro-delay system.Electro-delay system can use delay circuit, and delay circuit can use prior art, but 0～30 second scope of the delay time stuck-at-of delay circuit, and the delay time of delay circuit can be fixed on 20 seconds.

Described timer 2 has mechanism and the display screen 1 of the time of setting.Timer 2 can be 51 Series chip, and the mechanism that the time is set is the button 205 that connects single-chip microcomputer, and button 205 connects single chip circuit, and the circuit of single-chip microcomputer connects display screen 1, and single-chip microcomputer is worked out relative program, and program is put into memory.

Described delayed alarm switch connects wireless transmitter module.Wireless transmitter module can be the wireless transmitter module that uses on the mobile phone, and timer 2 connects wireless transmitter module through driving circuit 5, and wireless transmitter module can and connect with alarm 6.Use mobile phone to receive the alerting signal that wireless module sends.

Described have 2 at least near switch 3.Can and connect by a capacitive approach switch and an inductance approach switch near switch 3 and to form,, timer 2 is started working no matter be that capacitive approach switch or inductance approach switch provide the approaching electric signal of object.

Referring to Fig. 2.On above-mentioned embodiment basis, being installed in the shell 204 near switch 3, timer 2, travel switch 4 and alarm 6; Inductive head near switch 3 can extend to shell 204 outsides, can inductive head be installed according to the principle of work near switch 3, can also be connected the inductive head near switch 3 in the through hole of antitheft door; Drive link 200 is arranged on the travel switch 4, drive link 200 is to promote contact work, the sound hole 203 that alarm 6 is arranged on the shell 204, a bottom or a side at shell 204 are fixed 2 permanent magnets that magnetic is stronger, be describedly to place in the shell 204 near switch 3, timer 2, travel switch 4 and alarm 6, fixed block is magnetic on the shell 204.Shell 204 can be inhaled on the door lock 202 or antitheft door of steel; Drive link 200 on the travel switch 4 can touch the doorframe of antitheft door.

Claims

1. warning device that is used for door, comprise alarm and power supply, it is characterized in that, be provided with near switch (3), timer (2) and travel switch (4), near connecting timer (2) and travel switch (4), switch (3) constitutes the delayed alarm switch, delayed alarm switch connection alarm (6).

2. a kind of warning device that is used for door according to claim 1 is characterized in that, described timer (2) is 10～30 seconds a electro-delay system.

3. a kind of warning device that is used for door according to claim 1 is characterized in that, described timer (2) has mechanism and the display screen (1) of the time of setting.

4. a kind of warning device that is used for door according to claim 1 is characterized in that, described delayed alarm switch connects wireless transmitter module.

5. a kind of warning device that is used for door according to claim 1 is characterized in that, described have 2 at least near switch (3).

6. according to the described a kind of warning device that is used for door of arbitrary claim in the claim 1 to 5, it is characterized in that, describedly place in the shell (204) near switch (3), timer (2), travel switch (4) and alarm (6), fixed block is magnetic on the shell (204).