CN2361771Y

CN2361771Y - Anti-theft alarm lock for bicycle

Info

Publication number: CN2361771Y
Application number: CN 98239802
Authority: CN
Inventors: 王光庆
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-12-24
Filing date: 1998-12-24
Publication date: 2000-02-02
Anticipated expiration: 2008-12-24

Abstract

The utility model relates to an anti-theft alarm lock for bicycles. The utility model has the structure that a top spring and a probe are arranged in a lock core hole; a closed circuit can be formed by a lock body, a key, the probe, the top spring and a conducting wire; when a K2 is closed, the key and the probe are contacted; an n-shaped locking key is fixed on the lock core; the locking key can be inserted in grooves of a fixed iron block and a locking fork with the rotation of the lock core; the outer end part of the locking fork presents a tubular structure; a pressure spring is arranged in a tube, and a key groove is arranged outside the tube; the top of a fixed bolt can slide in the key groove, and a torsion spring is wound on the fixed bolt. The utility model has the advantage of simple structure; the opening operation is convenient because an automatic restoring spring is arranged on the locking fork of a bicycle; an electronic alarm device is arranged, a power supply is switched on when the electronic alarm device is locked, and the utility model has three alarm modes.

Description

Bicycle anti-theft alarm lock

The utility model belongs to technical field of living goods, relates to a kind of improvement of bicycle lock.

At present, though the bicycle lock kind is more, the safety that has is relatively poor, and the safety that has is better, and what have also has a pick-proof, if no matter existing which kind of lock to the car stealer with removing that bicycle is not unblanked, this car problem of losing still can't solve.

The purpose of this utility model provides a kind of bicycle anti-theft alarm lock that can implement automatic warning when stealing.

Technical solutions of the utility model are as follows:

Key is all identical with common lock with lock core, and top spring and probe are arranged in lock core hole, can form closed circuit by lock body, key, probe, top spring, lead, and key contacts to K2 closure with probe, be fixed with on lock core

The shape locking key, locking key can be inserted in the groove that fixedly iron block and lock are pitched with the rotation of lock core, lock core drives the locking key backward rotation, but locking key is end pressing switch K3 in addition, make K3 be in closure state, when being in the lock state in the lock fork insertion lock, lock fork top promotes insulating trip makes K switch 1 closure, and locking the fork outer end portion is tubular-shaped structures, stage clip is arranged in the pipe, pipe is outer keyway, can slide in keyway in the set bolt top, and dish has torsion spring on the set bolt, K switch L structure is that insulation is fixed with a transverse axis in the upright tube of metal, transverse axis center fixed in upright tube has a metal pendulum, and pendulum can touch with upright socket joint repeatedly by pendulum spring, and upright tube and pendulum are two contacts of KL.

Switch triode BG1 emitter e in the warning circuit is connected with power supply EC2 homopolarity by K switch 1, colelctor electrode C is connected with buzzer Y and EC are anodal by adjustable resistance R1, base stage b is connected with emitter stage b with capacitor C 1 by voltage-stabiliser tube D1, be connected with R2, K switch 2 and EC positive pole by D1, in parallel after K switch 3, resistance R 3 series connection with resistance R 4, be connected by K switch L and EC positive pole.

The utility model advantage is: 1, overall structure is simple; 2, lock is stuck and is provided with the automatic homing spring, and open operation is easy; 3, electronic alarm device is set, power turn-on during locking, and three kinds of type of alarms are arranged.

Below in conjunction with figure anti-theft lock for bicycle is narrated embodiment;

Fig. 1 is the bicycle anti-theft alarm lock structure chart;

Fig. 2 is bicycle anti-theft alarm lock lock core and locking key structure chart;

Fig. 3 is a bicycle anti-theft alarm lock lock fork structure chart;

Fig. 4 is a bicycle anti-theft alarm lock KL switch junctions composition;

Fig. 5 is the bicycle anti-theft alarm lock circuit diagram.

Wherein: the 1st, housing, the 2nd, lock fork, the 3rd, protection iron block, the 4th, fixing iron block, the 5th, key, the 6th, locking key, the 7th, power switch K1, the 8th, oscillation switch KL, the 9th, probe-type K switch the 2, the 10th, stage clip, the 11st, keyway, the 12nd, set bolt, the 13rd, torsion spring, the 14th, lock core.In the KL switch, the 15th, upright tube, the 16th, transverse axis, the 17th, pendulum.In the circuit, EC is that battery supply, Y are that buzzer device, BG1 are that switch triode, D1 are that Zener diode, C1 are that electric capacity, R are resistance.

When lock fork 2 inserts that fixedly iron block 4 is in the lock state, lock fork 2 top voltage source switch 7 (K1) insulating trips are in closure state, the conducting of warning circuit way circuit, key 5 inserts lock core 14 and contacts with probe 9, K switch 2 closures, capacitor C 1 charging time-delay, the conducting of BG1 switching tube, buzzer Y reports to the police, and the key counter-rotating can make the K3 closure, if it is closed repeatedly repeatedly to vibrate KL, also can make capacitor C 1 charging cause switching tube BG1 conducting to be reported to the police, when normally unblanking, lock fork 2 ejects by stage clip 10, set bolt 12 slips in the ellipse garden shape keyway 11, and torsion spring 13 will be locked to pitch to turn round and turn 90 degrees.

Claims

1, a kind of bicycle anti-theft alarm lock is made up of key, lock core, housing, it is characterized in that:

A: top spring and probe are arranged in lock core hole, can form closed circuit by lock body, key, probe, top spring, lead, key contacts to K2 closure with probe, be fixed with on lock core The shape locking key, locking key can be inserted in the groove of fixedly iron block and lock fork with the rotation of lock core, and lock core drives the locking key backward rotation, but pressing switch K3 is held in locking key in addition, make K3 be in closure state, when being in the lock state in the lock fork insertion lock, lock fork top promotes insulating trip makes K switch 1 closure, and locking the fork outer end portion is tubular-shaped structures, stage clip is arranged in the pipe, pipe is outer keyway, can slide in keyway in the set bolt top, and dish has torsion spring on the set bolt;

Switch triode BG1 emitter e in b, the warning circuit is connected with power supply EC2 homopolarity by K switch 1, colelctor electrode C is connected with buzzer Y and EC are anodal by adjustable resistance R1, base stage b is connected with emitter stage b with capacitor C 1 by voltage-stabiliser tube D1, be connected with R2, K switch 2 and EC positive pole by D1, in parallel after K switch 3, resistance R 3 series connection with resistance R 4, be connected by K switch L and EC positive pole.

2,1 described alarming lock as requested is characterized in that:

K switch L structure is that insulation is fixed with a transverse axis in the upright tube of metal, and the transverse axis center fixed in upright tube has a metal pendulum, and pendulum can touch with upright socket joint repeatedly by pendulum spring, and upright tube and pendulum are two contacts of KL.