CN2323420Y

CN2323420Y - Household burglar alarm

Info

Publication number: CN2323420Y
Application number: CN 97241618
Authority: CN
Inventors: 陈云龙
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-12-12
Filing date: 1997-12-12
Publication date: 1999-06-09
Anticipated expiration: 2007-12-12

Abstract

The utility model relates to a household anti-theft alarm. A controller is installed on a door, and an alarm is installed on a doorframe. The external part of the controller is provided with a magnet, a reed pipe of a normally closed switch of the alarm is connected with a power supply, an input terminal of an oscillating circuit is connected with the power supply by an alarm-free switch and the reed pipe of the normally closed switch, and an output terminal of the oscillating circuit is connected with a loudspeaker. The magnet is assembled with the reed pipe of the normally closed switch to form an automatic alarm switch, and an alarm circuit is controlled by the automatic alarm switch. The utility model is used for the anti-theft alarm of a household. When the utility model is used, a sound alarm can be sent out as long as an intruder opens the tiny gap of the door. The utility model has the advantages of safe performance, simple structure and low selling price. The utility model can be installed on a window, a cabinet or an automobile door.

Description

The home security alarm

The utility model relates to the burglar alarm on door, the window.

Commercially available a kind of family expenses vibrations alarm after it is given a shock, promptly sends sound and reports to the police.But after the unconscious vibrations of people back or natural vibrations are often arranged, also can send sound and produce false alarm.

Commercially available also have a kind of family expenses induction alarm device, and this alarm is owing to make complicatedly, and price is high, is unfavorable for popularizing.

Except above-mentioned two kinds of alarms, also some distant control anti-theft alarming devices, intelligent anti-theft alarm or the like, these alarms be because the cost height, complex structure etc. and unsatisfactory.

The purpose of this utility model is to provide a kind of a kind of home security alarm that is installed on the door, sends sound and report to the police when door is opened, and reaches antitheft purpose.

The novel technical scheme of this usefulness realizes as follows:

The utility model is equipped with a controller on door, an alarm is housed on doorframe, there is magnet the outside of controller, the normally closed contact of the normally closed switch tongue tube in the alarm links to each other with the positive pole of power supply, the other end is a normally opened contact, and the oscillatory circuit input end links to each other with power supply by the normally opened contact of exempting from alarm switch and normally closed switch tongue tube, and its output terminal links to each other with loudspeaker, outer magnet and the normally closed switch tongue tube of controller constitutes automatic alarm switch, and the control warning circuit.

To exempt from the alarm switch closure, and make alarm in running order.When door was closed, the normally closed switch tongue tube in the controller control alarm made warning circuit disconnect not sounding.When door was opened, controller was thrown off the normally closed switch tongue tube in the alarm, sent sound after warning circuit is connected to report to the police.

The utility model is compared with commercially available alarm, and it is esy to use, safe and reliable, as long as the invador opens a crack of door, promptly when door during apart from doorframe, alarm will send the sound warning; Secondly, because manufacturing process is simpler, the material consumption is few, and its cost is lower, thereby price is also low, is convenient to each family and accepts.Simultaneously, the utility model can also be installed on the window or the burglar alarm cashier's office in a shop or on the arrangements for automotive doors of cabinet such as safety cabinet, has actual promotional value.

In conjunction with the embodiments, accompanying drawing is illustrated:

Fig. 1: home security alarm synoptic diagram;

Fig. 2: home security alarm wiring diagram.

Among Fig. 1, controller (1) is contained on the door (4), and there is magnet (5) outside of controller (1); Alarm (2) is contained on the doorframe (3), and alarm is exempted from alarm switch K on (2).

Among Fig. 2, oscillatory circuit IC, resistance R, loudspeaker r, exempt from alarm switch K, normally closed switch tongue tube JA, its magnet is at normally closed switch tongue tube JA place.

The normally closed contact of normally closed switch tongue tube JA links to each other with the positive pole of power supply, the other end is a normally opened contact, the input end of oscillatory circuit IC links to each other with power cathode, another input end links to each other with normally closed switch tongue tube JA normally opened contact by exempting from alarm switch, the output terminal of oscillatory circuit IC links to each other with loudspeaker r, oscillatory circuit IC is made up of integrated package and peripheral cell, and magnet (5) constitutes automatic alarm switch and controls warning circuit with normally closed switch dry-reed tube switch JA.

Among Fig. 1-2: will exempt from alarm switch K closure, alarm (2) is in running order, when door (4) is opened, controller (1) on the door (4) is thrown off alarm (2), the magnetic force that is the magnet (5) on the controller (1) disappears, the normally opened contact closure of normally closed switch tongue tube JA, warning circuit are connected, and oscillatory circuit IC sends audio signal and impels the loudspeaker r acoustic alarm of making sound.

When door (4) when closing, controller (1) is close with alarm (2), and the magnet (5) on the controller (1) is close with the normally closed switch tongue tube JA on the alarm (2), and the normally opened contact on the normally closed switch tongue tube JA is thrown off, the automatic cut-out of warning circuit is not worked, i.e. sounding not.

Claims

1. a home security alarm includes controller (1), alarm (2); It is characterized in that: there is magnet (5) outside of controller (1), the normally closed contact of normally closed switch tongue tube JA in the alarm (2) links to each other with the positive pole of power supply, the other end is a normally opened contact, oscillatory circuit IC input end links to each other with power supply by the normally opened contact of exempting from alarm switch K and normally closed switch tongue tube JA, its output terminal links to each other with loudspeaker Y, and outer magnet (5) and the normally closed switch tongue tube JA of controller (1) constitutes automatic alarm switch.