CN2204753Y

CN2204753Y - Bicycle alarm against theft

Info

Publication number: CN2204753Y
Application number: CN 94220844
Authority: CN
Inventors: 帅卫东; 王永平; 杨东庆
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-09-10
Filing date: 1994-09-10
Publication date: 1995-08-09
Anticipated expiration: 2004-09-10

Abstract

The utility model belongs to a device which can display the condition that a bicycle is used without admitting or is stolen. The utility model mainly solves the disadvantage that when the bicycle is stolen, the alarm can not be prompted to carry out, and the bicycle is easily lost. The utility model is composed of a moving sensing device, an alarm sound generator, a loudspeaker, a sounder, a mechanical lock control switch, etc. whose outputs and inputs are connected in sequence. The moving sensing device is composed of a controllable silicon SCR, a triggering capacitor C1 which is connected in series between the anode of the controllable silicon and the control electrode, a trigger impulser Z, and a power supply E. The utility model has simple structure, low cost and high sensitivity, and the utility model can be easily mounted on a bicycle.

Description

Bicycle alarm against theft

The utility model belongs to a kind of device that uses or steal bicycle without authorization, bicycle alarm anti-theft of a kind of signal of sounding of more specifically saying so of showing.

Bicycle is a kind of main instrument that is used for short distance traffic in China, but for various reasons, the employed bicycle of town dweller usually is easy to be stolen by the people, in the prior art, topmost anti-theft measure remains by employed mechanical lock on the reinforcing bicycle and finishes, but the shortcoming of mechanical lock is to give the stolen prompting of a kind of bicycle of people, just simple mechanical characteristics by himself comes antitheft, in case mechanical lock is pried open, promptly completely lost effect, and some thief at first pries open mechanical lock, but other vehicle of bicycle use of will not prying open mechanical lock steal from the scene, thereby make bicycle still be easy to lose.Though part vehicle anti-theft warning product is also arranged in the market, they mostly are automobile anti-theft alarm and use, its complex structure, and cost is very high, is unsuitable for using on bicycle.

The purpose of this utility model be to provide a kind of simple in structure, cost is low, highly sensitive, stable performance, the bicycle alarm anti-theft that is easy to install and use on bicycle.

For finishing above-mentioned purpose, technology provided by the utility model is separated solution: a kind of bicycle alarm anti-theft, its special character is, it is by mobile sensor device 1, mechanical lock master cock 2, chimes of doom generating means 3, amplifirer 4 and rattler 5 are formed, described mobile sensor device 1 is by controllable silicon SCR, be serially connected in the triggering capacitor C 1 between this controllable silicon SCR anode and the control utmost point, trigger generator Z and power supply E constitute, described trigger generator Z is by the first pulse generation electrode 7 that is fixed on the pedestal 6, second pulse generation electrode shell 9 and the rolling steel ball between aforementioned two electrodes 8 of holding concurrently formed, the output of the input of described chimes of doom generating means 3 and mobile sensor device 1 is joined, the output of the input of described amplifirer 4 and chimes of doom generating means 3 is joined, its output is joined with the input of described rattler 5, and described mechanical lock master cock 2 is connected in the mobile sensor device 1 electric current major loop afterwards.

Chimes of doom generating means 3 in the utility model can adopt various sounding integrated packages; Amplifirer 4 can adopt various power tubes or power gain piece, but for guaranteeing that it is simple in structure and cost is lower, is advisable to adopt a power tube T1; Rattler 5 can adopt microphone devices such as news Chinese percussion instrument or loud speaker.

For guaranteeing the utility model in use; received current is stable in the supply chimes of doom generating means 3; and after the mechanical lock K switch is opened; an afterflow channel is provided or, can and meets a filter capacitor C2 and diode D1 in the main current loop after the mechanical lock master cock to circuit at power supply E reversal connection time protection chimes of doom generating means 3.

Accompanying drawing has been described a preferred embodiment of the present utility model.

Fig. 1 is the functional block diagram of this embodiment;

Fig. 2 is the schematic circuit diagram of this embodiment;

Fig. 3 is the sectional structure chart of impulse deviser Z among this embodiment;

Fig. 4 is that the A of Fig. 3 is to view.

Know referring to Fig. 1, this bicycle alarm anti-theft is made up of mobile sensor device 1, mechanical lock master cock 2, chimes of doom generating means 3, amplifirer 4 and rattler 5, the input end of described chimes of doom generating means 3 joins through the mouth of mechanical lock master cock 2 and mobile sensor device 1, the mouth of the input end of described amplifirer 4 generating device 3 taking alarm, the input end of its mouth and rattler 5 joins.

Know referring to Fig. 2; the mobile sensor device 1 of this embodiment is by controllable silicon SCR; be serially connected in the triggering capacitor C 1 between the controllable silicon SCR control utmost point and the anode; trigger generator Z and power supply E constitute; chimes of doom generating means 3 is by sounding piece MusicIC and two outer meeting resistance R1; R2 constitutes; its input end is that the mouth of K and mobile sensor apparatus 1 joins through mechanical lock master cock 2; amplifirer 4 is made of power discharging transistor T1; the mouth of its input end and chimes of doom generating means 3 joins; rattler 5 is loud speaker S1; the mouth of its input termination power discharging transistor T1; for guaranteeing to supply with the stability of received current in the chimes of doom generating means 3; and after switch opens, provide a continuous current circuit to circuit; in order to avoid the generation of reverse induction electromotive force and influence silicon control; or protection chimes of doom generating means 3 is not damaged when power supply E reversal connection, on the main current loop after the mechanical lock master cock K and be connected to a filter capacitor C2 and diode D1.

Know referring to Fig. 3, Fig. 4, described trigger generator Z constitutes by being fixed on hold concurrently shell 9 and a rolling steel ball 8 between aforementioned two electrodes of the first pulse generation electrode 7, the second pulse generation electrode on the pedestal 6, the first pulse generation electrode, 7 power connection positive poles, the second pulse generation electrode shell 9 of holding concurrently connects binary pair capacitor C 1.

Principle of work of the present utility model is as follows:

During vehicle parking, closed mechanical lock master cock K, annunciator is on the alert, and when stationary vehicle was motionless, rolling steel ball 8 did not roll.If rolling steel ball only contacts with the first pulse generation electrode 7, then circuit is in off state, the triggerless pulse generation, and not conducting of controllable silicon SCR, circuit is not reported to the police; If rolling steel ball all contacts with two electrodes, circuit is in on-state, and positive voltage is added in and triggers on the capacitor C 1, because electric capacity has the stopping direct current function, controllable silicon SCR is sent in the triggerless pulse, so yet not conducting of controllable silicon SCR, circuit is not still reported to the police.When vehicle is given a shock or angle of inclination when changing, roll on rolling steel ball 8 pedestal 6 in the enclosure, come in contact, disconnect action with two electrodes, moment promptly has electric pulse to take place, and after triggering capacitor C 1, the controllable silicon SCR turning circuit is reported to the police.Can not open the mechanical lock K switch with key again during if need not report to the police.

Can find out in conjunction with above-described embodiment, the utlity model has following advantage:

1, be given a shock or all can report to the police immediately during angle change at bicycle, from And give a kind of bicycle possibility of people stolen prompting;

2, highly sensitive, stable performance;

3, the user can or open by the closed of mechanical lock gauge tap K and determine easily whether oneself uses alarm;

4, entire circuit can be packaged in together, be installed in any position of bicycle, thereby be easy to very much on bicycle, install and use;

5, its circuit structure is very simple, and is cheap for manufacturing cost.

Claims

1, a kind of bicycle alarm anti-theft, it is characterized in that: it is by mobile sensor device (1), mechanical lock master cock (2), chimes of doom generating means (3), amplifirer (4) and rattler (5) are formed, described mobile sensor device (1) is by controllable silicon SCR, be serially connected in the triggering capacitor C 1 between this controllable silicon SCR anode and the control utmost point, trigger generator Z and power supply E constitute, described trigger generator Z is by the first pulse generation electrode (7) that is fixed on the pedestal (6), hold concurrently shell (9) and the rolling steel ball (8) between aforementioned two electrodes of the second pulse generation electrode formed, the output of the input of described chimes of doom generating means (3) and mobile sensor device (1) is joined, the output of the input of described amplifirer (4) and chimes of doom generating means (3) is joined, its output is joined with the input of described rattler (5), and described mechanical lock master cock (2) is connected in mobile sensor device (1) the electric current major loop afterwards.

2, bicycle alarm anti-theft according to claim 1 is characterized in that: in described mechanical lock master cock (2) electric current major loop afterwards and be connected to a filter capacitor C2 and a diode D1.

3, bicycle alarm anti-theft according to claim 1 and 2 is characterized in that: described amplifirer (4) is a power gain aerotron T1.