CN2403082Y

CN2403082Y - Theft alarm

Info

Publication number: CN2403082Y
Application number: CN 99222392
Authority: CN
Inventors: 黄正浩
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-09-20
Filing date: 1999-09-20
Publication date: 2000-10-25
Anticipated expiration: 2009-09-20

Abstract

The utility model relates to an alarm, which belongs to the technical field of an alarm device. The utility model mainly comprises an alarm sound box composed of a power supply, a sound circuit board, a sound device, etc., and comprises a starting switch and a control line. The free end of the control line is arranged on a protected article, or a magnetic switch is arranged on open-closed articles of a door, a window, etc. When the protected article is moved or pulled to cut the control line, an alarm circuit is switched on to reach the purpose for alarming under an action of the start switch or a magnetic switch. The utility model has the advantages of simple structure, low cost and convenient installation, and is suitable for safety and anti-theft of various occasions.

Description

Burglar alarm

The utility model relates to a kind of alarm, belongs to the anti-theft device technical field.

Existing alarm is to adopt magnetic control mostly, is installed in door, window etc. and opens and closes on the thing, and installation requirement is higher, the dismounting difficulty, and dirigibility is relatively poor, and price is higher, and usable range is narrow; Also having some alarms is that employing is electronically controlled, and the electronic element of its composition is more, complex circuit, and the cost height is unfavorable for penetration and promotion.

The purpose of this utility model is intended to overcome the deficiency of above-mentioned prior art, provides a kind of making simple, and cost is low, burglar alarm easy to use.

For achieving the above object, the utility model is such realization; A kind of burglar alarm, an alarm sound box that is formed by power supply, power switch, pronunciation wiring board, illuminator, acoustical generator serial connection is arranged, it is characterized in that starting switch of forming by housing, binding post, spring, contact block, contact in addition, one end of spring is fixed on the housing, its free end is connected with a side of contact, and the opposite side of contact is connected with control line; Binding post is connected with the alarm sound box by lead.

Above-described burglar alarm also can be made the alarm sound box and directly be connected in series with a magnetic switch, constitutes a warning and goes the same way.

The utility model compared with prior art has simple in structurely, and cost is low, be easy to installation and removal, easy to carry, usable range is wide, can be widely used in the safe antitheft of multiple occasions such as all kinds of door and windows, any object, open storage, economic and practical, be convenient to promote the popularization use.

Below in conjunction with drawings and Examples the utility model is described in further detail.

Fig. 1 is a conspectus of the present utility model.

Fig. 2 is an another kind of conspectus of the present utility model.

Embodiment 1: as shown in Figure 1, burglar alarm described in the utility model is to constitute like this: an alarm sound box 1 that is formed by power supply 3, power switch 4, pronunciation wiring board 2, illuminator 5, acoustical generator 6 serial connections is arranged, what be connected in series mutually with alarm sound box 1 is a starting switch 7 of being made up of housing 9, binding post 11, spring 10,

contact block

12 and 14, contact 13, one end of spring 10 is fixed on the housing 9, its free end is connected with a side of contact 13, and the opposite side of contact 13 is connected with control line 8; Binding post 11 is connected with alarm sound box 1 by lead, adjust the position of contact 13 in the starting switch 7, contact 13 is mediated, do not come in contact with

contact block

12,14, at this moment with control line 8 be connected firmly by antitheft thing 15, when the people moves right by antitheft thing 15, must affect control line 8 also to move right, contact 13 moves to right under the effect of control line 8, contact 13 is contacted with contact block 14, connected alarm circuit, illuminator 5 is luminous, acoustical generator 6 pronunciations, thus reached the purpose of reporting to the police; When the people is moved to the left by antitheft thing 15 or cuts off control line 8, contact 13 moves to left under the elastic force effect of spring 10, contact 13 is contacted with contact block 12, connect alarm circuit, play the effect of burglar alarm, this type of alarm can be used for the burglar alarm on multiple occasion, multiclass object or the device.

Embodiment 2: as shown in Figure 2, alarm circuit adopts magnetic switch 16 controls, the connection of alarm sound box 1 is with embodiment 1, magnetic switch 16 is made up of

copper sheet

17,18 and iron block 19 and magnet 20, it is partly arciform that copper sheet 18 is, fix an iron block 19 at its straight peen end,

copper sheet

17,18 is connected in series with alarm sound box 1 by lead and constitutes an alarm circuit; When magnetic switch 16 is installed in door and window etc. and opens and closes on the thing, close if open and close thing, the iron block 19 that magnet 20 attracts on the copper sheets 18 was opened copper sheet in 17,18 minutes, did not contact each other, and alarm circuit disconnects, and alarm is not worked; If opening and closing thing is opened, magnet 20 is removed, iron block 19 has lost the effect of magnetic force, copper sheet 18 resets under the effect of self elastic force, and an end that has iron block contacts with copper sheet 17, thereby has connected alarm circuit, alarm work, send alert light and alert sound, reach the purpose of alarming anti-theft, this type of burglar alarm only limit the use of in door and window etc. open, on the closing device.

When burglar alarm described in the utility model is not installed and used, power switch 4 is in off-state, when burglar alarm is mounted use, power switch 4 just is in closure state, in case alarm sends alerting signal, after the user of burglar alarm learns, just can turn on the power switch 4, alarm is quit work, and avoiding reports to the police does not always stop, and has brought very big convenience and dirigibility to the user.

Claims

1, a kind of burglar alarm, an alarm sound box (1) that is formed by power supply (3), power switch (4), pronunciation wiring board (2), illuminator (5), acoustical generator (6) serial connection is arranged, it is characterized in that starting switch (7) of forming by housing (9), binding post (11), spring (10), contact block (12) and (14), contact (13) in addition, one end of spring (10) is fixed on the housing (9), its free end is connected with a side of contact (13), and the opposite side of contact (13) is connected with control line (8); Binding post (11) is connected with alarm sound box (1) by lead.

2,, it is characterized in that alarm sound box (1) is connected in series with a magnetic switch (16), constitutes an alarm circuit according to the described burglar alarm of claim 1.