CN2203790Y

CN2203790Y - Anti-theft alarm for pressure detection

Info

Publication number: CN2203790Y
Application number: CN 94217064
Authority: CN
Inventors: 张力军
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-07-21
Filing date: 1994-07-21
Publication date: 1995-07-19
Anticipated expiration: 2004-07-21

Abstract

The utility model provides an anti-theft alarm for pressure detection, which is composed of an inflation device, a double-layer glass cavity, an air pressure detection device, etc. When the glass cavity is destroyed, high pressure gas in the glass cavity instantaneously leaks out completely, and then the air pressure detection device can detect out the leakage and emits alarm signals.

Description

Anti-theft alarm for pressure detection

At present to the alarm of the protection and the employing of glass; following several way is arranged: the one, the broken alarm of glass; its principle be pick up high fdrequency component in the broken sound of glass trigger report to the police because clap hands, all there is high fdrequency component in sound that the clap of thunder and metal bump etc. send, so these sound all can cause wrong report.The broken alarm of glass also exists to be failed to report, because just do not produce high fdrequency component with carrying out fragmentation behind the glass bonding gummed paper, fails to report so just produced in this case.The 2nd, the bonding jumper fracture is reported to the police, and it is a sticking film bonding jumper around glass, and bonding jumper also ruptured thereupon and causes warning when glass was broken.This means have the advantage of not reporting by mistake, but the glass bonding bonding jumper is not attractive in appearance, and the protection of big glass is difficult to accomplish because the offender can from the central authorities of glass remove a hole, hand puts in from the hole and draws back the window tip, commits theft then.The 3rd, adopt iron railing and roller shutter way that glass door and window is protected, this way can only be given the people a kind of psychology comfort, seems to have installed the iron gate steel sash, just equals to have become iron walls and brass partitions.Actually this is not so, and to open connecting rod also not difficult because cut off railing and sledge, thereby caused the non-anti-theft consequence of Anti-theft door and window.And these facilities run into fire can expanded by heating, can't open, to escape and rescue unfavorable.

The fundamental purpose that the utility model air pressure detects burglar alarm provides the burglar alarm that a kind of nothing is failed to report and reported by mistake.

Another purpose that the utility model air pressure detects burglar alarm provides a kind of burglar alarm that can keep the original building style and features.

The utility model air pressure detects burglar alarm and is made up of aerating device, double glazing cavity, pressure test device etc.Its principle of work is to use double glazing, leaves the gap between its layer and the layer, then seals with bonding agent around the glass, forms a gastight cavity.This cavity couples together with pipe one side and pressure test device, couples together with aerating device on the other hand, as shown in Figure 1.

Form if door and window or show window etc. are polylith glass, in this case, can they be joined to one another with pipe, it is as a whole that they are worked hard in glove with into mutually.As a glass breakage is wherein arranged, the gases at high pressure of other glass chamber also can be released by connecting leg, cause warning at last.Obviously, after working hard in glove with connecting leg, a plurality of cavitys that polylith glass constitutes also only need a cover aerating device, a cover pressure test device.

Aerating device can adopt air pump, gas tank, inflator etc.

Pressure test device (as shown in Figure 2), it has the inner chamber of a Pear-Shaped, a rubber pneumatic bag is housed in the chamber, with Lu Gai it is kept off in cucurbit, connect with a pipe between Valve for aerocyst and the glass chamber, and require the junction sealing, so after inflation in the vitreum, air bag also can expand into the cucurbit shape, and keeps balance with air pressure in the glass chamber.

The shape of cucurbit be one big one little, little position is the reed neck, big position is the reed body.On the both sides Lu Bi of reed neck and reed body, have four rectangular mouthful, for microswitch K1, K2, K3, the fixing usefulness of K4.Microswitch press reed in the cucurbit chamber, behind airbag aeration, airbag wall will push the reed that presses of microswitch, the normally closed contact of microswitch is disconnected when gas slowly in the vitreum leaks, air bag also will shrink thereupon, and the air bag of reed body region in contraction process, leave the cucurbit wall will be early than the reed neck.This just means that in the air bag contraction process microswitch K3 and K4 earlier break away from the extruding of air bag than K1 and K2.To press reed than microswitch K3 far away apart from the cucurbit center line for the reed that presses of microswitch K4 in addition, and K4 earlier breaks away from the extruding of air bag again than K3 like this.

The control procedure of air pump and warning are exported as shown in Figure 3, and K1, K2, K3, K4 are microswitch among the figure, and D is a controllable silicon, and R is a resistance, and C is an electric capacity, and M is an air pump

The startup of air pump and stop to be undertaken by following program: gas slowly leaks in the vitreum, air bag is bounced back thereupon cause K4 to connect, and make controllable silicon D positive pole obtain voltage, but it temporarily can not conducting.Glass chamber continues to leak, and after the K3 conducting by the time, power supply charges to capacitor C by R and K3, and when the voltage on the capacitor C was charged to the silicon controlled conduction threshold, controllable silicon D conducting made air pump M running.The air pressure of air pump M running back glass chamber gos up, and air bag is expansion thereupon also, the microswitch K3 disconnection that is squeezed, at this moment controllable silicon conducting still, air pump are remained in operation to the glass chamber inflation, and air bag continues expansion, the last microswitch K4 disconnection that is squeezed, power supply is cut off, and air pump shuts down.Above process under normal circumstances moves in circles and carries out.When glass chamber was damaged, the gases at high pressure instantaneous leak in the glass chamber was intact, and at this moment air bag shrinks fully, and microswitch K1, K2 break away from the air bag extruding and conducting, and the output line of at this moment reporting to the police just has supply voltage, reaches the warning purpose.

The advantage that the utility model air pressure detects burglar alarm is: 1, do not have and report by mistake and fail to report; 2, antijamming capability is strong; 3, can keep the original building style and features; 4, greatly favourable to the fire-fighting escape and rescue.

Description of drawings:

Fig. 1--for the utility model air pressure detects the burglar alarm synoptic diagram.

Fig. 2--be the utility model air pressure checking device figure.

Fig. 3--be control and warning electrical schematic diagram, microswitch is a pressured state.

Following the utility model air pressure detects burglar alarm and also is described further in conjunction with the accompanying drawings with a preferred embodiment.

The utility model air pressure detects burglar alarm and is made up of aerating device 2, double glazing cavity 1, pressure test device 3, pipe 4 etc.

Double glazing cavity 1 is made up of two blocks of glass, leaves the gap between its layer and the layer, then seals with bonding agent around the glass, forms a gastight cavity 1.These cavity 1 usefulness pipe, 4 one side and pressure test device 3 couple together, and couple together with aerating device 2 on the other hand, as shown in Figure 1.

Aerating device 2 adopts air pump.

Pressure test device 3(as shown in Figure 2), it is a Pear-Shaped, a rubber pneumatic bag 5 is housed in the Pear-Shaped chamber, with reed lid 6 with its retaining in the cucurbit body, connect with a pipe 4 between Valve for aerocyst and the glass chamber 1, and require the junction sealing, so after inflation in the vitreum 1, air bag 5 also can expand into the cucurbit shape, and keeps balance with air pressure in the glass chamber 1.

The shape of cucurbit be one big one little, little position is a reed neck 7, big position is a reed body 8.On the both sides Lu Bi of reed neck 7 and reed body 8, have four rectangular mouthful 9 altogether, for microswitch K1, K2, K3, the fixing usefulness of K4.Microswitch press reed in the cucurbit chamber, behind airbag aeration, airbag wall will push the reed that presses of microswitch, the normally closed contact of microswitch is disconnected when gas slowly in the vitreum leaks, air bag also will shrink thereupon, and the air bag of reed body region in contraction process, leave the cucurbit wall will be early than the reed neck.This just means that in the air bag contraction process microswitch K3 and K4 earlier break away from the extruding of air bag than K1 and K2.To press reed than microswitch K3 far away apart from the cucurbit center line for the reed that presses of microswitch K4 in addition, and K4 earlier breaks away from the extruding of air bag again than K3 like this.

The control procedure of air pump and warning output are as shown in Figure 3.K1, K2, K3, K4 are microswitch among the figure, and D is a controllable silicon, and R is a resistance, and C is an electric capacity, and M is an air pump.

Claims

1, a kind of air pressure detects burglar alarm, and comprise aerating device, it is characterized in that: it also comprises double glazing cavity, pressure test device.

2, air pressure according to claim 1 detects burglar alarm, and it is characterized in that: the double glazing cavity is made of double glazing, leaves the gap between its layer and the layer.

3, air pressure according to claim 1 detects burglar alarm, and it is characterized in that: pressure test device has the inner chamber of a Pear-Shaped, and a rubber pneumatic bag is housed in the chamber, has four rectangular mouthful on the both sides Lu Bi of reed neck and reed body.

4, air pressure according to claim 1 detects burglar alarm, it is characterized in that: cavity couples together with pipe one side and pressure test device, couples together with aerating device on the other hand.