CN2305461Y

CN2305461Y - Alarm anti-theft lock

Info

Publication number: CN2305461Y
Application number: CN 97203131
Authority: CN
Inventors: 尹猷钧; 李裔红
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-04-08
Filing date: 1997-04-08
Publication date: 1999-01-27
Anticipated expiration: 2007-04-08

Abstract

The utility model discloses an alarm anti-theft lock which is composed of a lock head, a lock casing, an alarm circuit assembly, an anti-prizing cover plate, etc. The alarm circuit assembly is composed of power supply, an alarm circuit unit, a cover plate anti-prizing circuit unit, a preamplifier circuit unit, an automatic reset circuit unit, a vibration sensor, a locking circuit unit, a vibration transmitting circuit unit, a lock rod circuit unit, an alarm horn, etc. The utility model not only has the anti-picking function and remote alarm function, but also has the advantages of good reliability, high sensitivity, easy fabrication, low cost, small fault transmitting rate, etc. The utility model can be widely used in bicycles and motorcycles to have the double theft protection functions of cycle locking and alarm.

Description

Alarm anti-theft lock

The utility model relates to a kind of theftproof lock, and specifically a kind of lock with alarming anti-theft function is used for bicycle or motorcycle.

The patent No. is the alarm anti-theft lock of CN94243496.x, mainly be to promote warning circuit work by vibrating sensor reception vibration signal to send alarm signal, but steal car in very short time, prying open the lock cover plate of outer casing, or the car owner away from around car and the car nobody the time, also don't work even send alarm signal, be easy to make the burglar to succeed.

The purpose of this utility model be to provide a kind of can pick-proof and the alarm anti-theft lock of long-distance alarm, have and report to the police and the double anti-theft function of lock, while this lock security reliability height, highly sensitive, with low cost.

For achieving the above object, the technical solution of the utility model is as follows:

A kind of alarm anti-theft lock, comprise tapered end, lock shell, lock bar, warning circuit assembly, include in the described warning circuit assembly: power supply, locking bar circuit unit, pre-amplification circuit unit, lock-in circuit unit, warning circuit unit, vibrating sensor, automatic reset circuit unit, alarming horn, its characteristics are also to comprise in the warning circuit assembly: cover plate pick-proof circuit unit, cover plate pick-proof circuit unit is connected with the pre-amplification circuit unit, in a side of locking shell the pick-proof cover plate is housed also.

Also comprise in the warning circuit assembly: vibration radiating circuit unit, vibration radiating circuit unit is connected with the warning circuit unit.

Advantage of the present utility model is that it has lock car, antitheft dual-use function, and the utility model self has tamper-resistant function simultaneously, and can realize long-distance alarm.Self power consumption is little under alert status, efficient is high, antitheft wide ranges, dependable performance, warning sensitivity height, simple in structure, volume is little, good looking appearance, easy to install and use, practical.

The utility model has following accompanying drawing:

The front view of Fig. 1 alarm anti-theft lock

The connection schematic diagram of Fig. 2 alarm anti-theft lock enclosure circuit

The circuit structure block diagram of Fig. 3 alarm anti-theft lock

The circuit diagram of Fig. 4 alarm anti-theft lock

The vibration radiating circuit figure of Fig. 5 alarm anti-theft lock

The acceptor circuit figure of Fig. 6 alarm anti-theft lock

The structure chart of Fig. 7 alarm anti-theft lock

Below in conjunction with drawings and Examples the utility model is described in further detail.

Among Fig. 1,1 is tapered end, and 2 are the lock shell, and 3 are switch control cam, and 4 is normally closed switch, and 5 is screw, and 6 is the pick-proof cover plate, and 7 is the pick-proof switch, and 8 is battery case, and 9 is screw rod, and 10 is circuit board, and 11 is waterproof speaker, and 12 is sealing ring.

Among Fig. 2,13 is the lock bar, and 14 is the electrode on the lock bar, and 15 is electrode slice, and 16 is normal open switch, and 17 is screw, and 18 is pin, and 19 is spring.

Fig. 3 is the circuit structure block diagram of the warning circuit assembly described in the utility model.Mark 20 is a power supply among the figure, 21 is the locking bar circuit unit, 22 is cover plate pick-proof circuit unit, and 23 is the pre-amplification circuit unit, and 24 is the lock-in circuit unit, 25 is the warning circuit unit, 26 is signal receiver, and 27 is vibrating sensor, and 28 is the automatic reset circuit unit, 29 is loudspeaker, and 30 are vibration radiating circuit unit.

Among Fig. 7,1 is tapered end, and 2 are the lock shell, and 13 is the lock bar, and 31 is the warning circuit assembly, and 6 is the pick-proof cover plate, and pick-proof cover plate 6 is in the outside of lock shell 2.

The operating principle of the utility model alarm anti-theft lock is as follows: tapered end 1 is connected by screw 17 with lock shell 2, install one in the tapered end and open and control cam 3 and normally closed switch 4, they are fixed by a fixed head, power supply is through this switch connection, when lock bar 13 inserts in the lockhole, the lock bar is by 18 lockings of pin in the tapered end on the one hand, on the other hand, the electrode 14 on the lock bar contacts with electroplax sheet 15, and electrode slice is stirred normal open switch 16 simultaneously to " leading to ", at this moment, this lock promptly is in alert status, and a through hole is arranged in the lock bar 13, electrode 14 (two) aperture circuit line conducting thus, form internal path, electrode 14 and exterior insulation; Under any vibration situation, guarantee tight contact the between electrodes and the electrode slice by spring 19.In lock shell 2 audio amplifiers battery case 8, circuit board 10 and waterproof speaker 11 are installed, they are fixing by screw rod 9, between waterproof speaker and lock shell inner panel one sealing ring 12 are arranged, and can prevent that rainwater from entering lock shell audio amplifier inside.Between lock shell 2 audio amplifier installation openings and the pick-proof cover plate 6 waterproof sealing gasket is arranged, cover plate is connected and fixed with several screws 5, and the cover plate pick-proof on-off circuit 7 of a cover plate pick-proof or anti-unnormal unlocking is installed in lock shell 2 audio amplifiers.

The warning circuit of the utility model electronic warning and anti-theft lock is Fig. 4, and its operating principle is as follows: under alert status, when the lock bar is cut off or cover plate when illegally being opened, by S among the figure ₂Disconnection represent, this moment triode N ₁Conducting, its e utmost point is exported a high level signal, and this signal is through diode D ₁The S end of input IC1:B behind the forward conduction.Therefore as long as S ₂Be in off-state, triode N ₁Just will export high level signal always; When vehicle is moved or vibrated vibrating sensor B ₂Promptly export the S end of high concora crush signal, export high level signal at once by the Q end simultaneously, and pass through R to IC1:A ₅And R ₃Respectively to C ₃, C ₄Charging, and C ₃Charging interval necessarily greater than C ₄, the time difference between them guarantees enough 5 seconds.After 20 seconds, C ₄When voltage reaches the operating voltage of IC2:A (2 pin) promptly 2 foots is high level, then its 3 pin will be exported high level signal as long as vibrating sensor is exported 1 pin that a signal is given IC2:A again this moment, and this signal is through diode D ₂The S end of input IC1:B behind the forward conduction, thus alarm signal produced, if within 20 seconds, stop the carrying or the vibration of vehicle, C ₄Though reached the operating voltage of IC2:A after the charging because " with door " relation, IC2:A will be not can the output HIGH voltage signal, so after 5 seconds, C ₃Charging voltage reach the R end of IC1:A, promptly during the operating voltage of reset terminal, warning circuit is returned to alert status again, this situation is considered as normally moving or vibrating; When from diode D ₁Or D ₂The S end of high level signal input IC1:B after, export high level signal immediately by its Q end simultaneously, through resistance R ₆Make triode N ₂Conducting drives warning circuit B ₁Work.By N ₃, N ₄The clad pipe of forming promotes loudspeaker and sends chimes of doom.Taking place to steal under the situation of car warning, the Q of IC1:B end is high level, and passes through R ₇To capacitor C ₅Charging, after 30 seconds, C ₅On voltage will reach the operating voltage of IC1:B R end, end if steal the car situation this moment, then by diode D ₁Or D ₂The signal of output is a low level, Q end that is the output low level of IC1:B, and warning circuit quits work; If steal the car situation continued this moment, then by diode D ₁Or D ₂The signal of output is a high level, and warning circuit will be worked always.C ₂Effect be moment in the lock bar inserts lockhole, circuit is placed alert status.After the warning, the car owner uses this car key to unblank and can stop if wanting to stop to report to the police, and is the cut-out circuital current this moment.When using this lock lock car, only need the lock bar is inserted locking device and takes off car key, this lock promptly is in alert status, when if the car owner maybe need stop to report to the police with car, then use this car key rotational lock core, take off the lock bar and get final product, at this moment, whole warning circuit is in off-state, under any circumstance all can not report to the police.

Fig. 5 is vibration radiating circuit, its a termination warning circuit N ₂The E utmost point, from the alarm signal of alarm through B ₁, B ₂The oscillator of being formed produces the control signal about 300-1000HZ, is used to control B ₃Break-make, thereby make the work of high-frequency generator interruption, realize modulation, and through transmission antennas transmit to high frequency.Fig. 6 is an acceptor circuit, and by superregenerative detection, audio frequency amplifies, and rectification and direct current amplify forms B ₅Be superregenerative detection level, C ^*And L ^*The operating frequency of decision receiver, C ₁Be high frequency feedback electric capacity, the weak audio signal that detection obtains is through C ₂Deliver to audio frequency amplifying stage B ₆, B ₇, after the amplification again through D ₁, D ₂Rectification becomes DC voltage and is added in B ₈Ground level makes B ₈Conducting, alarm sends chimes of doom.

Vibration radiating circuit and warning circuit are installed in lock body inside, and receiver is an independent capsule, is carried by the car owner.

Claims

1. alarm anti-theft lock, comprise tapered end (1), lock shell (2), lock bar (13), warning circuit assembly (31), include in the described warning circuit assembly (31): power supply (20), locking bar circuit unit (21), pre-amplification circuit unit (23), lock-in circuit unit (24), warning circuit unit (25), vibrating sensor (27), automatic reset circuit unit (28), alarming horn (29), it is characterized in that also comprising in the warning circuit assembly (31) cover plate pick-proof circuit unit (22), cover plate pick-proof circuit unit (22) is connected with pre-amplification circuit unit (23), in a side of locking shell (2) pick-proof cover plate (6) is housed also.

2. alarm anti-theft lock as claimed in claim 1 is characterized in that going back in the described warning circuit assembly (31) involving vibrations radiating circuit unit (30), and vibration radiating circuit unit (30) is connected with warning circuit unit (25).