CN2205864Y

CN2205864Y - Anti-theft alarm lock for bicycle

Info

Publication number: CN2205864Y
Application number: CN 94227840
Authority: CN
Inventors: 邹建新
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-03-14
Filing date: 1994-03-14
Publication date: 1995-08-23
Anticipated expiration: 2004-03-14

Abstract

The utility model relates to an anti-theft alarm lock for a bicycle. At present, the stolen rate of bicycles is very high, and the common mechanical lock is difficult to avoid a bicycle being stolen. The anti-theft alarm lock for a bicycle provided by the utility model adds a sound alarm device and a dynamic and static detector on the basis of the traditional mechanical lock with a lock head and a lock buckle. A switch which is connected to the position between a battery and the sound alarm device in series is arranged within the moving range of the contact arm of a lock buckle, and the dynamic and static detector is connected with the sound alarm device. After lock is locked, if the situations that the lock is prized, the bicycle is carried, etc., the lock has vibration and overturn, and the lock alarms, which plays a threatening function to a thief.

Description

Anti-theft alarm lock for bicycle

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

At present, the loss by theft rate of bicycle is very high, and people go out by bike or park cars and worry that extremely bicycle comprises that various power assist vehicles are stolen.The reason that loss by theft rate is high is that at present traditional mechanical bicycle lock is easy to pry open.Though the various mechanical locks that are intended to improve the anti-sled performance of bicycle lock occurred, not to make lock complicated, increased cost, be exactly that performance still can not reach requirement.

The purpose of this utility model is traditional mechanical bicycle lock is improved, and keep that it is simple in structure, open flexibly, lower-cost advantage, and it can be reported to the police under abnormal conditions.

Bicycle anti-theft alarm lock of the present utility model comprises lock housing, tapered end and by the snap close of tapered end control action, it is characterized in that also comprising acoustic alarm device and sound detector, described snap close has a contact arm, in described contact arm moving range, be provided with a switch, described switch series is connected between battery and the described acoustic alarm device, described sound detector links to each other with described acoustic alarm device, when described tapered end is in open mode, described switch is in off-state, above-mentioned each device all is positioned at described lock housing, and is formed with a battery case in lock housing.

The utility model bicycle anti-theft alarm lock has increased by a cover acoustic alarm device on the basis of the mechanical lock of tradition, when lock locks, if any people's picking lock or move bicycle, then the sound detector in the lock then can send signal to the acoustic alarm device, makes it to report to the police.

Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing.

Fig. 1 is the structural representation of bicycle anti-theft alarm lock of the present utility model;

Fig. 2 is a kind of structural representation of sound detector among Fig. 1;

Fig. 3 is Fig. 1, along the view of A-A line;

Fig. 4 is the circuit theory diagrams of acoustic alarm device of the present utility model.

Referring to Fig. 1, bicycle anti-theft alarm bicycle lock of the present utility model comprises lock housing 1, tapered end 2, snap close 3, bolt 4, bolt spring 5, acoustic alarm device 6 and sound detector 7.Snap close 3 and tapered end 2 be interlock mutually.When lock locks, in the draw-in groove 41 on the snap close 3 one ends embedding bolt 4, when opening lock, move on the snap close 3 with car key, bolt 4 is opened under the pulling force of bolt spring 5.Relevant mechanical lock is a kind of traditional structure, just no longer describes in detail at this, and snap close 3 has a contact arm 31, makes snap close 3 L-shaped.Contact arm 31 downsides at snap close 3 are provided with a touch switch 8, and when snap close 3 moves down, contact arm 31 will make touch switch 8 close and close.This touch switch 8 is connected in series (please see below) with battery (not shown) harmony warning device 6.When lock is opened, snap close 3 is in upstream position, thereby touch switch 8 is opened, acoustic alarm device 6 does not have electricity, does not work, after the lock locking, snap close 3 moves down under the drive of tapered end 2, make the contact arm 31 of snap close 3 close touch switch 8,, make it to be in and treat alarm condition to acoustic alarm device 6 power supply.

As shown in Figure 1, be battery case at contact arm 31 rear sides of snap close 3, simultaneously referring to Fig. 3, battery case cover plate 9 front ends extend outward-the L shaped sheet 91 that stretches out.When lock locked, contact arm 31 moved down, and just in time inserted the L shaped sheet 91 that stretches out, and therefore, after the lock locking, battery case cover plate 9 can't be opened.

As mentioned above, bicycle anti-theft alarm lock of the present utility model also includes a sound detector 7, and it makes moving of time spent inspection vehicle lock, situations such as vibration overturning.It links to each other with acoustic alarm device 6.After sound detector 7 detects above-mentioned situation, acoustic alarm device 6 is reported to the police.

Fig. 2 shows a kind of structure of sound detector 7.It comprises a circular arc bobbin winder bracket 71 and conducting sphere 72, is wound with the

lead

73 and 74 that two sections electricity separate on circular arc bobbin winder bracket 71.When being in the normal position, conducting sphere 72 just in time between two section leads, 73,74 line end heads, links to each other their electricity.If meet vibration, situations such as overturning, conducting sphere 72 will depart from this position, thereby two section leads, 73,74 electricity are separated.For guaranteeing can be silver-plated outside good electrical contact, the conducting sphere 72.Certainly, sound detector 7 can also adopt as position switches such as mercoid switches.

Fig. 3 show acoustic alarm device 6 among Fig. 1 circuit theory diagrams and with the annexation of touch switch 8 and sound detector 7.Execute and close NAND gate T1-T4 is formed a delay circuit for 4 among the figure, be controlled at 3-4 between second general time delay.Can change time delay by control capacittance C1, and integrated package S1 is a music-integrating block, generally adopts KD9561, and it can produce the chimes of doom signal, and touch switch 8 is serially connected on the battery, and sound detector 7 then is connected the input of delay circuit.When sound detector 7 had a signal, delay circuit work kept output 3-4 high level in second at NAND gate T4 output, make triode BG1 conducting, loudspeaker Y reports to the police, and has crossed 3-4 after second, NAND gate T4 becomes low level, and triode BG1 ends, and warning stops.If sound detector 7 continues to send signal, then the acoustic alarm device is with continuous firing.

Fig. 4 only shows a kind of acoustic alarm manipulated or operated apparatus, can also adopt the acoustic alarm of other form certainly.

Bicycle anti-theft alarm lock working condition of the present utility model is as follows: by bike the time, because lock opens, so the touch switch 8 in the lock also disconnects, and acoustic alarm device 6 no electricity are not worked.After lock pins, touch switch 8 closures, if having people's picking lock or move bicycle this moment, then lock will send chimes of doom, if the burglar stops picking lock or moves bicycle, being reported to the police after second by 3-4 stops automatically.If the burglar continues picking lock or moves bicycle, then will continue to report to the police.If bicycle is tripped by passerby or wind is fallen, then lock also can send 3-4 alarm second, reminds the car owner.In addition, owner has in short-term and reports to the police when shutting, and can judge in view of the above whether battery lost efficacy.

Claims

1, a kind of bicycle anti-theft alarm lock, comprise lock housing, tapered end and by the snap close of tapered end control action, it is characterized in that also comprising acoustic alarm device and sound detector, described snap close has a contact arm, in described contact arm moving range, be provided with a switch, described switch series is connected between battery and the described acoustic alarm device, described sound detector links to each other with described acoustic alarm device, when described tapered end is in open mode, described switch is in off-state, above-mentioned each device all is positioned at described lock housing, and is formed with a battery case in lock housing.

2, bicycle anti-theft alarm lock as claimed in claim 1 is characterized in that, described sound detector comprises a circular arc bobbin winder bracket and a conducting sphere, is wound with two sections conductor wires on described circular arc bobbin winder bracket.

3, bicycle anti-theft alarm lock as claimed in claim 1 is characterized in that, described sound detector is a mercoid switch.

4, bicycle anti-theft alarm lock as claimed in claim 1 is characterized in that, a L shaped sheet that stretches out is arranged on the cover plate of described battery case, and when described tapered end was closed, the contact arm of described snap close inserted humanoid stretching out in the sheet.