CN2215567Y - Bicycle lock with warning function - Google Patents

Abstract

The utility model relates to an alarm lock for a bicycle. A transverse pin is connected to the lock core of the alarm lock for a bicycle. A cover plate is inserted into the groove of a lock shell to be combined with the lock shell. The inner surface of the cover plate is provided with a notch which is arranged on the corresponding position of the transverse pin. The alarm circuit of the alarm lock for a bicycle comprises a signal source input circuit, four monostable trigger circuits, a sampling circuit, an exclusive OR gate comparison circuit, a control circuit, an electronic switch and a sound circuit. After arranged, the alarm lock for a bicycle is not easily disassembled by other people, which can prevent or reduce false alarm.

Description

Bicycle lock with warning function

The utility model relates to alarming lock.

In recent years, the bicycle theft phenomenon is comparatively serious, and the pick-proof of lock itself, shear behavior difference are one of its reasons.In order to improve the lock fail-safe, some producers have released thief-proof alarming lock of bicycle or alarm.Because in the design, these warning device false alarms are a lot of, the alarm that has itself is just disassembled by others easily, can not play thief-proof security personnel's effect effectively.

The purpose of this utility model provides the bicycle alarming lock that a kind of locking combines with warning, and this alarming lock is got rid of or reduced the false alarm phenomenon, and is difficult for being dismantled steathily by others.

The utility model bicycle alarming lock comprises lock housing, dead bolt, lock core and warning circuit, is associated with a lateral pin on the lock core, has with the junction of cover plate cover plate is moved up and down and the groove of clutch on lock housing, and the cover plate inner face has recess in the cross locking corresponding position; Warning circuit comprises: the signal source input circuit; 4 single-shot trigger circuit S ₁, S ₂, S ₃And S ₄Sampling hold circuit; XOR gate B comparison circuit: control circuit; Electronic switch and sound circuit.Wherein:

The signal source input circuit comprises resistance R ₀, K switch and NAND gate A ₁, R ₀Another termination K switch of one end ground connection, A ₁Input and R ₁Join with the contact of K;

Single-shot trigger circuit S ₁And S ₂Input through C ₁R ₁Differentiation element and C ₂R ₂Differentiation element meets NAND gate A ₁Input, S ₃Input through C ₃R ₃Differentiation element meets S ₂Output Q ₂, S ₄Input through C ₄R ₄Differentiation element meets NAND gate A ₄Output; Single-shot trigger circuit S ₁, S ₂, S ₃And S ₄Delay time determined by resistance in each single-shot trigger circuit and electric capacity that respectively delay time τ and resistance R, capacitor C have experience formula τ=0.8RC.

Sampling hold circuit comprises NAND gate A ₃With

Trigger, wherein A ₃An input termination S ₃Output Q ₃, A ₃Another input termination signal source V;

The input of trigger

Meet A ₃Output,

Another input of trigger

Through R ₅C ₅Differentiation element and S ₁Output Q ₁Join;

An input 5 of XOR gate B comparison circuit connects signal source, another input 6 with

Trigger output Q ₅Join the output 7 series resistor R of B ₇After meet NAND gate A ₄Input;

Control circuit comprises NAND gate A ₂, resistance R ₆With triode T ₃, A wherein ₂Two inputs meet S respectively ₁Output Q ₁And S ₂Output

, A ₂Output serial connection R ₆Back and T ₃Base stage is joined, T ₃Grounded emitter, colelctor electrode and R ₇With NAND gate A ₄The contact of input joins;

Electronic switch comprises resistance R ₈, triode T ₂, resistance R ₉With triode T ₁, R ₈One termination S ₄Output Q ₄, another termination T ₂Base stage, T ₂Grounded emitter, colelctor electrode meets R ₉Back and T ₁Base stage is joined, T ₁Emitter stage connects power supply, and colelctor electrode connects sound circuit;

Sound circuit comprises language integrated circuit F, resistance R ₁₀, triode T ₄, resistance R ₁₁, triode T ₅And buzzer, wherein the input "+" of F meets T ₁Colelctor electrode, output e connects buzzer, and output b is connected in series R ₁₀Back and T ₄Base stage is joined, T ₄Grounded emitter, collector series connection R ₁₁Back and T ₅Base stage is joined, T ₅Colelctor electrode connects buzzer, emitter stage and T ₁Join with the contact of the input "+" of F.

After the utility model bicycle alarming lock was locked, lateral pin one end that links with lock core fell into the cover plate recess, and cover plate can not be drawn out, and the set bolt of lock body also just can not be removed, so this is locked under the locked state difficult by others' dismounting; And this structure is difficult for being discharged battery and losing warning function by others, and the user then can change battery easily; Because warning circuit adopts sampling hold circuit and XOR gate comparison circuit, so can prevent or reduce false alarm effectively.This lock also can be used for motorcycle and non-motor tricycle except that being used for bicycle.

Below in conjunction with drawings and Examples the technical solution of the utility model is described further.

Fig. 1, bicycle alarming lock open front diagrammatic sketch behind the cover plate;

Fig. 2, the A-A sectional view of Fig. 1;

Fig. 3, the dead bolt schematic diagram;

Fig. 4, the warning circuit diagrammatic sketch;

Among the figure, 1 dead bolt, 2 cross lockings, 3 torsion springs, 4 contactors, 5 cover plates, 6 batteries, 7 circuit are provided with the position, 8 hold-doun nuts, 9 pistons, 10 stage clips, 11 cover plate recesses, 12 lock cores, 13 stage clip baffle plates, 14 lock housings, 15 lockholes, 16 driving levers, 17 alarm housings, 18 lock core marbles.

The utility model bicycle alarming lock has a lock housing 14, and cover plate 5 inserts along the groove of lock housing both sides, is associated with cross locking 2 on the lock core 12, and there is out recess 11 lateral pin 2 corresponding positions on cover plate 5 inner faces, driving lever 16 and piston 9 interlocks, and hold-doun nut 8 is positioned at lock housing 14.After dead bolt 1 insertion lockhole 15 was locked, driving lever 16 left switch 4, and switch 4 is connected, and the back piston 9 of unblanking resets, and makes driving lever 16 pressured switches 4, and switch 4 is disconnected; After locking, lateral pin 2 outer ends fall into recess 11 with the rotation of lock core 12, at this moment cover plate 5 can not by on move and open, hold-doun nut 8 and batteries 6 in the lock housing 14 also just can not be discharged.

It is 1.5 * 4 volts of direct currents that this alarming lock warning circuit adopts power supply, and K switch is a mercoid switch.When switch connection, NAND gate A ₁Input signal is high level v, is output as low level , this low level Through C ₁R ₁Differentiation element triggers monostable circuit S ₁, S ₁Output Q ₁30 seconds high level of output time-delay; This low level Simultaneously through C ₂R ₂Differentiation element triggers monostable circuit S ₂, S ₂Output Q ₂19 seconds high level of output time-delay, S ₂Output

19 seconds low level of output time-delay.The Q at the end at 19 seconds ₂Suddenly change low level into by high level, this low level is through C ₃R ₃Differentiation element triggers monostable circuit S ₃, S ₃Output Q ₃Export the high level of delaying time less than 1 second.

Monostable road S ₃, NAND gate A ₃With

Trigger constitutes 20 seconds moment NAND gate A ₁The sampling hold circuit of input signal source is because monostable circuit S ₁Output Q ₁At the end changed low level into by high level to 30 seconds, this low level signal is through C ₅R ₅Differentiation element triggers

Flip-flop circuit makes

Trigger Q ₅The sampling inhibit signal all put low level, the inhibit signal of promptly sampling keeps all being changed to low level after 10 seconds.Therefore, as NAND gate A ₁When input end signal was high level in the time of the 20th second, Q ₅Sampled signal is a high level just, and keeps 10 seconds postposition to be low level; As NAND gate A ₁When input end signal was low level in the time of the 20th second, Q ₅Sampled signal just keeps low level signal.

Sampling inhibit signal Q ₅With NAND gate A ₁Input end signal source V inserts in the XOR gate B comparison circuit, sampling inhibit signal Q in the time of the 20th second ₅With the 20th second to the 30th second during NAND gate A ₁When input end signal V was high level or low level simultaneously, the XOR gate comparator was output as low level, can not trigger back level monostable circuit S ₄As if Q this moment ₅One high and one low inconsistent with the V level, XOR gate comparator output high level.Because monostable S ₁Output Q ₁With monostable S ₂Output

Insert NAND gate A ₂, A ₂, R ₆And T ₃The control circuit T during the 20th second to the 30th second that constitutes ₃Not conducting, therefore, the high level of XOR gate comparator output is through R ₇With NAND gate A ₄It is low level that the back is changeed pretty, and this low level is through C ₄R ₄Differentiation element triggers monostable circuit S ₄, S ₄20 seconds high level of output time-delay.This high level inserts R ₈, T ₂, R ₉And T ₁The electronic switch that constitutes makes triode T ₁Saturation conduction 20 seconds, thus make the sound circuit conducting and reported to the police 20 seconds, stopping after 20 seconds reporting to the police, circuit is on the alert again.

This alarming lock is installed on bicycle, and when the external world had the people to touch bicycle, mercoid switch K will connect, and but can produce high level input signal V, and this signal is through NAND gate A ₁Output low level V.Because monostable circuit S ₁30 seconds high level of output time-delay, monostable circuit S ₂19 seconds low level of output time-delay and 19 seconds high level of time-delay, in 20 seconds, control circuit

Be high level, triode T ₃Saturation conduction, NAND gate A ₄Input is equivalent to ground connection, is low level, through NAND gate A ₄Back output then is high level, can not trigger monostable S ₄So, in 20 seconds, touch car arbitrarily and do not report to the police, prevented the false alarm that various factors causes.

The 20th second to 30 seconds between because control circuit

Be low level, triode T ₃End, the output signal of XOR gate comparator B can be passed to the back level, and after 30 seconds, QQ ₂Be high level, T ₃Saturation conduction can not trigger monostable S ₄So, the 20th second to 30 seconds between, touch car when there is the people in the external world, two inputs, 5,6 signal levels of XOR gate comparator B height is inconsistent, output high level, NAND gate A ₄Output low level triggers monostable S ₄, monostable S ₄Export 20 seconds high level of time-delay, make the T of electronic switch ₁Saturation conduction 20 seconds, thus report to the police 20 seconds.

When the car owner opens lock with key, piston 9 resets, and driving lever 16 pressured switches 4 disconnect switch 4 and promptly cut off the electricity supply, and warning circuit is not worked.

Claims (1)

1, a kind of bicycle alarming lock of forming by lock housing, dead bolt, lock core etc. and warning circuit, it is characterized in that, on lock core (12), be associated with a lateral pin (2), lock housing (14) junction last and cover plate (5) has cover plate (5) is moved up and down and the groove of clutch, and cover plate (5) inner face has recess (11) in lateral pin (2) corresponding position; The warning circuit of this lock comprises: signal source input circuit, 4 single-shot trigger circuits (S1, S2, S3 and S4), sampling hold circuit, XOR gate (B) comparison circuit, control circuit, electronic switch and sound circuit; Wherein:

The signal source input circuit comprises resistance R 0, K switch and NAND gate A1, R0 one end ground connection wherein, and another termination K switch, the contact of A1 input and R1 and K joins;

The input of single-shot trigger circuit S1 and S2 connects the output of NAND gate A1 respectively through C1R1 differentiation element and C2R2 differentiation element, the input of S3 meets the output Q2 of S2 through the C3R3 differentiation element, and the input of S4 connects the output of NAND gate A4 through the C4R4 differentiation element;

Sampling hold circuit comprise NAND gate A3 and

Trigger, the output Q3 of A3 input termination S3 wherein, another input termination signal source V of A3;

The input of trigger

Connect the output of A3,

Another input CCC5R5 differentiation element of trigger and the output Q1 of S1 join;

An input 5 of XOR gate B comparison circuit connects signal source, another input 6 with

Trigger output Q5 joins, and connects the input of NAND gate A4 behind the output 7 serial connection R7 of B;

Control circuit comprises NAND gate A2, resistance R 6 and triode T3, and wherein two of A2 inputs connect the output Q1 of S1 and the output of S2 respectively

, join with the T3 base stage behind the output serial connection R6 of A2, the T3 grounded emitter, the contact of colelctor electrode and R7 and NAND gate A4 input joins;

Electronic switch comprises resistance R 8, triode T2, resistance R 9 and triode T1, the output Q4 of R8 one termination S4 wherein, another termination T2 base stage, the T2 grounded emitter, join with the T1 base stage behind the collector series connection R9, the T1 emitter stage connects power supply, and colelctor electrode connects sound circuit;

Sound circuit comprises speech IC F, resistance R 10, triode T4, resistance R 11, triode T5 and buzzer, wherein the input "+" of F connects the T1 colelctor electrode, output e connects buzzer, join with the T4 base stage behind the output b serial connection R10, the T4 grounded emitter, join with the T5 base stage behind the collector series connection R11, the T5 colelctor electrode connects buzzer, and the contact of the input "+" of emitter stage and T1 and F joins.

Images