CN2330025Y

CN2330025Y - Sensor for burglar alarm

Info

Publication number: CN2330025Y
Application number: CN 98221329
Authority: CN
Inventors: 刘同斌; 魏建军
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-05-27
Filing date: 1998-05-27
Publication date: 1999-07-21
Anticipated expiration: 2008-05-27

Abstract

The utility model relates to a vibration sensor of anti-theft alarms of a motorcycle and a bicycle. The utility model comprises a coil with an iron core. A permanent magnet is arranged above the iron core, the permanent magnet is connected with a lifting rod through plumb lines, the lower part of the lifting rod is arranged in the tube cavity of an elastic tube, and the upper part of the lifting rod travels through the top surface of an outer shell to extend outward. The vibration sensor and the corresponding anti-theft alarms of the motorcycle and the bicycle are positioned in a hidden position of the motorcycle and the bicycle, and the motorcycle and the bicycle can not decline when normally parked, and the vibration sensor can send out a control signal to switch the alarm circuit to make the alarm send out an alarm signal when being thieved.

Description

A kind of sensor of burglar alarm

The utility model relates to the vibration transducer of motorcycle, bicycle anti-theft alarm device.

At present, be contained in the burglar alarm on motorcycle, the bicycle, kind is a lot, and its sensor mostly adopts vibroswitch or audio-switch.Vibroswitch is to utilize the swing of sash weight or the rolling of Metal Ball, make electric pole short circuit and send electric signal, after vehicle comes to a complete stop, in case inclination is arranged, alarm just sends alerting signal, and this alerting signal is sustained, and directly causes vehicle and does not tilt, therefore, this sensor has the deficiency of inclination of vehicle meeting false alarm.If adopt audio-switch, very easily be subjected to the interference of extraneous sound source again, the false alarm phenomenon can take place equally.

The purpose of this utility model is the sensor that the burglar alarm of extraneous sound source interference was not reported to the police, was not subjected in a kind of inclination of stopping of design.

The sensor of this burglar alarm comprises base, be fixed with shell on the base, be fixed with skeleton in the hypomere inner chamber of shell, be wound with coil on the skeleton, be fitted with in the center pit of skeleton and the fixing iron core of base, there is a permanent magnet top of iron core, permanent magnet is connected on the shadoof by messenger wire, leave the gap between the upper surface of permanent magnet and iron core, be fastened with the elasticity body in the epimere inner chamber of shell, the hypomere of shadoof places the tube chamber of elasticity body end face interior, that epimere passes shell overhanging.

The sensor of above-mentioned burglar alarm also is fixed with carrying handle in the upper end of shadoof, and the surface is provided with the back-up ring that contacts with the skeleton upper surface in the enclosure, and permanent magnet is spherical.

During installation, the sensor of this burglar alarm is placed in the concealment part of motorcycle or bicycle together with corresponding burglar alarm.After car come to a complete stop, permanent magnet remained static, the non-inductive electric current output of the coil of ribbon core, and alarm is not worked, the alert signal of not transmitting messages.When the robber steals car, must move vehicle, at this moment, permanent magnet on the messenger wire must be all around to swing, and the magnetic field that it produced is swing thereupon also, and the coil of ribbon core is with regard to cutting magnetic line, so coil produces induction current, by output line output, the on-off circuit that goes to trigger alarm or connect alarm makes alarm send alerting signal.

When the car owner rides when using car, at first will carry on the shadoof, permanent magnet is risen in the tube chamber of elasticity body, under the elastic force effect of elasticity body, permanent magnet can not fall down during vehicle ', and non-inductive electric current is from the coil output of ribbon core, and alarm is not worked.When parking cars, with car stop good after, press down shadoof again, permanent magnet is got final product near the iron core upper surface.

From the above mentioned, the sensor of this burglar alarm is stolen car in case the robber is taken place, and not only can export induction current immediately, trigger alarm and send alerting signal, and when stopping, permanent magnet is positioned at the tube chamber of elasticity body, even inclination of vehicle, coil also influence electricity miscarriage is given birth to, the alarm alert signal of not transmitting messages, owing to do not have audio-switch, so be not subjected to the interference of extraneous sound source yet.

Accompanying drawing shows the structural representation of the sensor embodiment of this burglar alarm.

In the present embodiment, the sensor of burglar alarm comprises base 1, be screwed shell 2 on the base 1, in the hypomere inner chamber of shell 2 skeleton 3 is housed, skeleton 3 is fastened between back-up ring 11 and the base 1, back-up ring 11 is fixed on shell 2 inside surfaces, be wound with coil 4 on the skeleton 3, having two output lines 12 to pass base 1 on the coil 4 outwards draws, be fitted with iron core 5 in the center pit of skeleton 3, on base 1, there is the permanent magnet 6 of a sphere top of iron core 5 to iron core 5 by screw retention, permanent magnet 6 is connected on the shadoof 8 by messenger wire 7, leave the gap between the upper surface of permanent magnet 6 and iron core 5, be fastened with elasticity body 9 in the epimere inner chamber of shell 2, the hypomere of shadoof 8 places in the tube chamber of elasticity body 9, it is overhanging that epimere passes the end face of shell 2, and spinning in the upper end of shadoof 8 is fixed with carrying handle 10.

For easy to make, the skeleton 3 in the present embodiment, coil 4 and iron core 5 can replace with the playback head of radio cassette player, and effect is identical.

Claims

1, a kind of sensor of burglar alarm, it is characterized in that comprising base (1), be fixed with shell (2) on the base (1), be fixed with skeleton (3) in the hypomere inner chamber of shell (2), be wound with coil (4) on the skeleton (3), in the center pit of skeleton (3), be fitted with and the fixing iron core (5) of base (1), there is a permanent magnet (6) top of iron core (5), permanent magnet (6) is connected on the shadoof (8) by messenger wire (7), leave the gap between the upper surface of permanent magnet (6) and iron core (5), be fastened with elasticity body (9) in the epimere inner chamber of shell (2), the hypomere of shadoof (8) places in the tube chamber of elasticity body (9), it is overhanging that epimere passes the end face of shell (2).

2, the sensor of burglar alarm according to claim 1 is characterized in that permanent magnet (6) is for spherical.

3, the sensor of burglar alarm according to claim 1 is characterized in that being fixed with carrying handle (10) in the upper end of shadoof (8).

4, the sensor of burglar alarm according to claim 1 is characterized in that being provided with the back-up ring (11) that contacts with skeleton (3) upper surface on shell (2) inside surface.