CN202899810U

CN202899810U - Theft-proof alarm lock

Info

Publication number: CN202899810U
Application number: CN 201220574332
Authority: CN
Inventors: 徐兵
Original assignee: Zhejiang University ZJU
Current assignee: Zhejiang University ZJU
Priority date: 2012-11-01
Filing date: 2012-11-01
Publication date: 2013-04-24
Anticipated expiration: 2022-11-01

Abstract

The utility model discloses a theft-proof alarm lock. The theft-proof alarm lock comprises a lock head and a lock body, wherein a control circuit is arranged in the lock head; the control circuit comprises a power supply, a resistor, a triode, a buzzer, an alarm lead and a dynamic switch; the alarm lead penetrates the whole lock body and is arranged in the center of the lock body; an insulating layer is arranged outside the alarm lead; the dynamic switch is arranged at a lock hole of the lock head; when the dynamic switch is turned on, the circuit works; and when the alarm lead is disconnected, the buzzer works. According to the theft-proof alarm lock, the control circuit is arranged in the lock head, the alarm lead in the control circuit is led out to penetrate the whole lock body, and when the alarm lead in the lock body is pinched off, the alarm lead is disconnected, the collector of the triode works, and the buzzer is turned to continuously give an alarm, so the alarm lock has a theft-proof function.

Description

Anti-theft alarm bicycle lock

Technical field

The utility model relates to a kind of lock, relates to more specifically a kind of anti-theft alarm bicycle lock.

Background technology

Bicycle and battery truck lithe are commonly used, and are seen everywhere, bicycle and battery truck are a kind of than being easier to the stolen vehicles, traditional lock has just played the purpose of lock, does not have the function of warning, in case destroyed or when blocking the car owner be difficult to know.And the utility model is locked in traditional vehicle and has been done further improvement, has set up alarm module, so that safer by the lock car body.

Summary of the invention

The purpose of this utility model is, a kind of simple in structure, low price is provided, and has the anti-theft alarm bicycle lock of warning function.

For realizing the purpose of this utility model, intend by the following technical solutions:

A kind of anti-theft alarm bicycle lock comprises tapered end and lock body, it is characterized in that be provided with a control circuit in the described tapered end, control circuit comprises power supply, resistance, triode, buzzer, warning wire and dynamic circuit connector switch;

Warning wire runs through whole lock body, and warning wire is located at the center of lock body, and warning wire is provided with one deck insulating layer outward;

The dynamic circuit connector switch is located at the lockhole place of tapered end, dynamic circuit connector switch closure, circuit working; Warning wire disconnects, buzzer work.

The utility model passes through a built-in control circuit in tapered end, the warning wire in the control circuit is drawn run through whole lock body.When locking, the lock core of lock body movable end promotes the dynamic circuit connector switch makes its closure, the warning wire conducting, and circuit working, warning wire is with the collector and emitter short circuit of triode, and triode is in cut-off state, does not work.When the warning wire of lock body inside during by pinch off, warning wire disconnects, and transistor collector work is connected buzzer and made it continue to report to the police, and reminds the car owner to note antitheft.

Description of drawings

Fig. 1 is structural representation of the present utility model.

Fig. 2 is the control circuit schematic diagram of tapered end of the present utility model inside.

Label among the figure is, 1, tapered end; 2, lock body; 3, lockhole; 4, lock core; 5, control circuit; 6, warning wire; 7, dynamic circuit connector switch.

The specific embodiment

Further specify the technical solution of the utility model below in conjunction with drawings and Examples.

In conjunction with Fig. 1, a kind of anti-theft alarm bicycle lock that present embodiment proposes comprises tapered end 1 and lock body 2, is provided with a control circuit 5 in the tapered end 1, control circuit 5 comprises power supply, resistance, triode, buzzer, warning wire 6 and dynamic circuit connector switch 7, warning wire 6 runs through whole lock body 2 and is located at the center of lock body 2, is provided with one deck insulating layer outside the warning wire 6, and dynamic circuit connector switch 7 is located at lockhole 3 places of tapered end 1, dynamic circuit connector switch 7 closures, circuit working, when warning wire 6 disconnects, buzzer work.

In conjunction with Fig. 2, control circuit comprises that 5V and 1.5V battery supply, resistance are resistance R 1 and R2, warning wire, dynamic circuit connector switch S 1, NPN type triode Q1 and the buzzer LS1 of 1K Ω.When dynamic circuit connector switch S 1 is in off-state, when namely lock is not locked, not conducting of control circuit, circuit is not worked; When dynamic circuit connector switch S 1 is in closure state, when being the lock pinning, the control circuit conducting, the circuit normal operation, at this moment warning wire is with NPN type triode Q1 colelctor electrode and emitter stage short circuit, NPN type triode Q1 is in cut-off state, buzzer LS1 does not report to the police, at this moment the consumed power of circuit is very little, is 1.5 * (1.5/1000)=0.00225W, and destroyed when locking body, warning wire is during by pinch off, NPN type triode Q1 is in magnifying state, and buzzer LS1 reports to the police, and has well played antitheft effect.

Claims

1. an anti-theft alarm bicycle lock comprises tapered end and lock body, it is characterized in that be provided with a control circuit in the described tapered end, control circuit comprises power supply, resistance, triode, buzzer, warning wire and dynamic circuit connector switch;