CN2699387Y

CN2699387Y - Broken line warning device for burglarproof by toughened glass

Info

Publication number: CN2699387Y
Application number: CN 200420049456
Authority: CN
Inventors: 张力军
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-04-27
Filing date: 2004-04-27
Publication date: 2005-05-11
Anticipated expiration: 2014-04-27

Abstract

The utility model discloses a broken line warning device for burglarproof by the toughened glass, comprising toughened glass, a conductive film and a warning control circuit. The peripheral edge of the toughened glass is provided with the annular conductive film; the conductive film and the toughened glass form the entirety; the top ends of the conductive film respectively lead the connecting line and are connected with the warning control circuit, forming the current circuit together with the warning control circuit. When the toughened glass breaks, the conductive film of the glass breaks in company with the toughened glass; the broken line warning of the toughened glass is realized; the warning signal is exported. The broken line warning device of the utility model has sensitivity, reliability, simple and reasonable device, beautiful appearance, easy use and mounting and long service life, being suitable for mounting and using on all kinds of glass doors and windows, glass showcases and commercial article glass showcases and other field of the toughened glass for burglarproof warning.

Description

Be used for the antitheft wire break alarm device of tempered glass

Technical field

The utility model relates to the burglar alarm technical field, specifically relates to a kind of antitheft wire break alarm device of tempered glass that is used for.

Background technology

As everyone knows, the method of burglar alarm is a lot, but break alarm is to use more a kind of electronic anti-theft technology, break alarm, utilize exactly and be arranged in the control signal wire that is provided with on the anti-theft object when destroyed, make that current return just is cut off in the warning system control circuit, produce circuit breaker or, report to the police thereby cause burglar alarm because of short circuit causes that electric current changes in the alarm control circuit.It is antitheft many that wire break alarm device is used for the building window field, for example, name is called a kind of Chinese utility model patent of net formula wire break alarm device, disclose a kind of like this technology, cross one another by many eradications edge metal wire exactly and twine the back and form bulk metal net and alarm control circuit and combine with a plurality of regular mesh, the bulk metal net is fixed on the window, again the wire netting metal wire is communicated with alarm control circuit, just formed warning device.The wrong report and the rate of failing to report of this net formula wire break alarm device are lower, have good theftproof performance.But because the common all integral installations of wire netting have influenced the buildings good looking appearance on the door and window of buildings, maintain and replace is also relatively more difficult.And skyscraper all is to do window with the very big tempered glass of area now, it is just more unrealistic that wire netting is installed in the above, the showcase and the market commodity showcase that also have the museum, also all be to use tempered glass, can not use metal net device too, the glass alarming anti-theft generally all uses the technological means that ultrasound examination or stress detect at present, because building exterior wall glass, the combination glass that glass on showcase and the commodity showcase all is made up of a lot of pieces, piece installation induction paster on glass and connecting line need do not had, more loaded down with trivial details, not attractive in appearance yet, implement a lot of difficulties of existence.Wire break alarm device can be used widely on tempered glass, can realize safe and reliable warning, easy to install again, also do not influence its aesthetic property, be the problem that this area need solve.

Summary of the invention

The purpose of this utility model provides a kind of dependable performance of reporting to the police, do not influence the glass good looking appearance, install and use and all be used for the antitheft wire break alarm device of tempered glass very easily.

In order to achieve the above object, the utility model adopts following constructional device: a kind of antitheft wire break alarm device of tempered glass that is used for, combine by tempered glass, conductive film and alarm control circuit, be characterized in: the conductive film that ring-type is not sealed is set on the periphery edge of tempered glass, make conductive film and tempered glass form integral body, the top of conductive film is drawn the conduction connecting line respectively and is connected alarm control circuit, a conduction connecting line is as zero line ground connection, and another root conductive connecting line connects triode T ₁Base stage, and by the series connection resistance R ₁Connect positive source, triode T ₁Collector connect triode T ₂Base stage, T ₂Emitter connect triode T ₃Base stage, triode T ₂, T ₃Collector be connected positive source with relay J, triode T by diode connected in parallel D ₁And T ₃Emitter connect zero-power line, thereby form current return with alarm control circuit.

Above-mentioned described conductive film is that the method by vacuum coating is set directly on the edge of tempered glass.

Above-mentioned described conductive film is also can be arranged on by the method for plated film on the tempered glass edge.

Above-mentioned described conductive film can also be arranged on the edge of tempered glass by the method for other stickups.

Principle of work of the present utility model is as follows: tempered glass is after heat treatment to form by common fluoride glass, common fluoride glass is after high temperature heats, all expand because of being heated in glass surface and the inside, and after expanded glass has gone out high temperature furnace, be subjected to forcing the cooling back and shrink the formation housing suddenly, make tempered glass than surface of ordinary glass density height because of forcing cooling to be shunk, just strengthened the physical strength of tempered glass, because the heat conductivity of glass is poor, so though glass surface is forced to cool off, and the glass temperature inside is still very high, will be along with the prolongation of the time cooling of lowering the temperature slowly, inner vitreum is also along with shrinking gradually, but be subjected to the obstruction and the restriction of appearance housing, because the cooling velocity difference that glass is inside and outside, the amount of contraction difference, just formed the stress of glass inside, when tempered glass is subjected to certain physical shock, stressed one side is a pressure, and another side is to be subjected to pulling force, this pulling force just in time offsets with the stress of glass inside, the internal stress of tempered glass is big, so the anti-mechanical force damage capability of tempered glass is strong, when external force during greater than the stress of glass inside, tempered glass will break in the one side that is subjected to pulling force, and in a single day glass break, the pulverizing that monoblock tempered glass will break in stress dispensing process, and be that no rib is acerous, be crushed to the edge from the center of glass always, this is the inherent characteristic that tempered glass has, utilize this distinctive physical characteristics of tempered glass, edge at tempered glass is provided with conductive film, can be with the method for vacuum coating or plated film with conductive film attached on the glass surface, also can reach this purpose with various method of attaching, conductive film can be metal film or non-metallic film, draw the conduction connecting line on the conductive film and connect alarm control circuit, when tempered glass does not have fragmentation, because a conduction connecting line is as zero line ground connection, so triode T ₁Bias voltage be zero, triode T ₁End, and compound transistor T ₂, T ₃Pass through resistance R ₂Obtained a bias voltage, so conducting makes the relay J adhesive, relay contact J _-1Closure, output alarm signal when tempered glass is subjected to big external force generation fragmentation, is not to be crushed to monolithic glass from stress point, and the conductive film that adheres on glass is ruptured thereupon, at this moment, triode T ₁Pass through resistance R ₁Obtain a bias voltage, make triode T ₁Conducting, and triode T ₁Collector potential be zero, compound transistor T like this ₂, T ₃Bias voltage also be zero, so compound transistor T ₂, T ₃Become by conducting and to end, relay J discharges, relay contact J _-1Disconnect output alarm signal.

Because the utility model has adopted the said structure principle, utilize tempered glass inherent characteristic, just its inner stress can make glass be crushed to monolithic glass from breakdown point, make the conductive film on the glass surface suffer to destroy fracture, thereby triggering break alarm, realized the sensitive reliable of breaking alarming, the device advantages of simple, do not influence the glass good looking appearance yet, install and use all very convenient, long service life, not only be suitable on the glass door and window of all kinds of buildingss, installing and using, be more suitable on the glass showcase in museum and market commodity glass showcase, installing and using, also be fit to use the burglar alarm of tempered glass in other field.

Description of drawings

Fig. 1 is a structural principle synoptic diagram of the present utility model

Embodiment

Structure of the present utility model as can be seen from Figure 1, a kind of antitheft wire break alarm device of tempered glass that is used for, combine by tempered glass, conductive film and alarm control circuit, on the periphery edge of tempered glass 1, adhere to the conductive metal film 2 that a loop does not seal with the method for vacuum coating, make conductive film 2 and tempered glass 1 form whole, the top of conductive film 2 is drawn conduction connecting line 3,4 respectively and is connected alarm control circuit, a conduction connecting line 3 is as zero line ground connection, and another root conductive connecting line 4 connects triode T ₁Base stage and by the series connection resistance R ₁Connect positive source, triode T ₁Collector connect triode T ₂Base stage and logical triode T ₂, T ₃Collector be connected positive source with relay J, triode T by diode connected in parallel D ₁And T ₃Emitter connect zero-power line, thereby form current return with alarm control circuit.

With chemical plating method or various method of attaching with nonmetal conductive film attached on the vacuum glass, do not influence warning performance of the present utility model and serviceable life yet.

Claims

1. one kind is used for the antitheft wire break alarm device of tempered glass, combine by tempered glass, conductive film and alarm control circuit, it is characterized in that: on the periphery edge of tempered glass, adhere to the conductive film that ring-type is not sealed is set, make conductive film and tempered glass form integral body, the top of conductive film is drawn the conduction connecting line respectively and is connected alarm control circuit, a conduction connecting line is as zero line ground connection, and another root conductive connecting line connects triode T ₁Base stage and by the series connection resistance R ₁Connect positive source, the collector of triode T1 connects triode T ₂Base stage, the emitter of T2 connects triode T ₃Base stage, triode T ₂, T ₃Collector be connected positive source with relay J, triode T by diode connected in parallel D ₁And T ₃Emitter connect zero-power line, thereby form current return with alarm control circuit.

2. wire break alarm device according to claim 1 is characterized in that: described conductive film is that the method by vacuum coating is set directly on the edge of tempered glass.

3. wire break alarm device according to claim 1 is characterized in that: described conductive film also can be that the method by plated film is arranged on the tempered glass edge.

4. wire break alarm device according to claim 1 is characterized in that: described conductive film can also be arranged on the edge of tempered glass by the method for other stickups.