CN2181716Y

CN2181716Y - Burglar alarm for showcase

Info

Publication number: CN2181716Y
Application number: CN 93228801
Authority: CN
Inventors: 李思明; 刘绍芳
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-07-22
Filing date: 1993-07-22
Publication date: 1994-11-02
Anticipated expiration: 2003-07-22

Abstract

The utility model relates to an alarm, especially a burglar alarm for showcases. The utility model comprises a pressurized container, wherein, the outlet end of the pressurized container is connected with a valve and a decompression valve orderly through pipes, and a siren and a low-pressure gauge are connected with the outlet end of the decompression valve. The utility model has the advantages of stable alarming performance, reliability, safety, interference rejection, simple structure, low cost, etc., and is an ideal burglar alarm for various halls and shelves for exhibition, such as exhibition halls, museums, etc.

Description

Burglar alarm for showcase

The utility model relates to a kind of alarm, especially for the burglar alarm of showcase, is the desirable burglar alarm of showcases such as exhibition hall, museum, treasures hall.

The showcase of domestic in the past all kinds of exhibition halls, museum, treasures hall etc., burglar alarm generally also is not set, because the stolen phenomenon of precious exhibit happens occasionally, just cause the attention of the parties concerned gradually in recent years, want to take the corresponding precautionary measures, yet present commercially available all kinds of burglar alarms or device, have because complex structure, cost an arm and a leg, also have plenty of automatically controlled, being that showcase is big avoids, and should not adopt; The alarm that is used for showcase abroad, although polytypes such as chattering type, pressure-sensitive, infrared type, many Bu Boshi, standing wave formula are each has something to recommend him, because its introduction expense costliness, and be unfavorable for applying at home.

Of the present utility model be to provide a kind of simple in structure, guarantee safety, dependable performance, the showcase burglar alarm that is not affected by the external environment without power supply.

The purpose of this utility model realizes that by the following technical solutions it comprises high pressure tank, and its endpiece links to each other with valve, reduction valve in turn by pipeline, and siren, low-pressure meter link to each other with the endpiece of reduction valve.

Described pipeline is provided with high pressure gauge between its valve and reduction valve.

The utility model compared with prior art owing to adopted the structural measure of high pressure tank and siren, and through evidence report to the police stable and reliable for performance, anti-interference, guarantee advantage such as safety, simple in structure simultaneously, cost is low, be beneficial to apply.

Figure is a main TV structure synoptic diagram of the present utility model.

Embodiment of the present utility model is described in conjunction with the accompanying drawings, high pressure tank 1 is through the punch process moulding with steel plate, its endpiece links to each other with valve 2, threeway 3, reduction valve 4 in turn by pipeline, and high pressure gauge 8 is loaded in the threeway 3, and siren 7, low-pressure meter 6 link to each other with the endpiece of reduction valve 4.

When the utility model uses, at first will be full of pressurized air in the high pressure tank 1, valve-off 2, put it in the airtight showcase, open valve 2, by reduction valve handle 5 reduction valve is set up at 1.2 atmospheric pressure, then siren 7 makes sound, ring to the interior air pressure of showcase always and equate with the air pressure of reduction valve 4 outputs, promptly during 1.2 atmosphere, siren 7 stops the sound, in case showcase is opened by the robber or broken, then the air pressure in the showcase sharply descends, balance is destroyed, and siren 7 begins to ring, and rings to being found or jar interior gas exhausts always, and then the realization goal of the invention, prevent that effectively the showpiece in the showcase is stolen.

Claims

1, a kind of burglar alarm that is used for showcase is characterized in that it comprises high pressure tank 1, and its endpiece links to each other with valve 2, reduction valve 4 in turn by pipeline, and siren 7, low-pressure meter 6 link to each other with the endpiece of reduction valve 4.

2, alarm according to claim 1 is characterized in that described pipeline, is provided with high pressure gauge 8 between its valve 2 and reduction valve 4.