CN2291472Y - Electronic door handle lock - Google Patents

Abstract

The utility model relates to an electronic door handle lock which is composed of a lock case with a lock bolt and an electronic cipher control circuit, wherein, the lock case is provided with an oscillating tooth lock bolt which is composed of a lock bolt body, an unlocking shifting plate, a resetting torsion spring, and an electromagnet; the electronic cipher control circuit which uses a pulse counter chip IC1 as a core comprises a cipher key circuit, a coding matrix circuit, a single-shot trigger circuit, an executive circuit, etc. The electronic door handle lock has the coding, decoding, and false code recognition functions and artfully combines a traditional mechanical lock structure and modern electronic technology. The electronic door handle lock has the advantages of convenient use, high safety, low cost, and high secret performance.

Description

A kind of electronic gate is lock

The utility model relates to a kind of improved door lock, belongs to lock technology field.

The improvement of door lock theftproof performance, the raising of the close property of spoon are in other words roughly carried out aspect two, the one, to the transformation of lock cylinder or bolt structure, the 2nd, utilize advanced electronic cipher technology.With regard to common family expenses door lock, the all-electronin door lock of advanced technology, be actually a kind of warning system, still be difficult to obtain universally, so at present the various safe-guard door locks that use are essentially the cylinder lock type, the close property of its spoon will be subjected to the restriction of pellet shot from a slingshot parameter, this is undoubtedly a kind of defective, some have adopted the door lock of simple electronic cipher technology, because the perfect combination between the two of unresolved electromechanics also fails to be used widely always.

The purpose of this utility model is to disclose a kind of electronic gate of dependable performance lock, and it can be given full play to traditional mechanical lock and electronic cipher and control both technology specialities.

The purpose of this utility model is achieved in that

A kind of electronic gate is lock, it is made up of the lock box and the electronic password control circuit of tongue with lock, described lock box is provided with an oscillating tooth dead bolt, it is made up of dead bolt main body, unblank group plate, reduction torsion spring and electromagnet, describedly unblank to dial plate and the dead bolt main body flexibly connects through bearing pin, both reduction torsion springs are located on this lock shaft, described unblank to dial also have a control lockhole on the plate, when group plate left lockset position of coupler, its control lockhole was inserted by the electromagnetism pin of described electromagnet and fixes.Dialling plate is provided with and resets and unblank two extreme positions, when group plate is in reset position, dial and form the profile of tooth breach of unblanking between plate and the dead bolt main body, thereby transform original profile of tooth breach of fixedly unblanking on the dead bolt as profile of tooth breach (or claiming oscillating tooth) that two parts form.Described electronic password control circuit is a core with a pulse counter chip, comprise password key circuit 21, encoder matrix circuit 22, single- shot trigger trigger 20,23,24 and executive circuit 25, wherein, each road button K1 of password key circuit 21, K2, K3, K4, each low level output Q0 of each corresponding input of the encoded matrix circuit 22 of each tapping point of K5 and pulse counter chip IC 1, Q1, Q2, Q3, Q4, Q5 connects, and the signal input part of the steady circuits for triggering 23 of button common port order of password key circuit 21, the latter's output then is connected with the CP end of pulse counter chip IC 1, the high-order output Q6 of this chip IC 1 connects signal input part to executive circuit 25 through the contact a of another single-shot trigger trigger 24, export the execution control signal by the latter, 18 of described electromagnet are the output loading of this executive circuit 25, the 3rd single-shot trigger trigger 20 is a timing circuit, its input is connected with the power supply hot end through start button K, and its output is connected with the reset terminal R of chip IC 1 through gate circuit M5 and isolating diode.

For strengthening electronic gate the anti-theft security performance of lock, in described electronic password control circuit, also be provided with a warning circuit 26, it connects a pseudo-code trigger gate circuit M8 by the encoded circuit 22-1 of the pseudo-code key 21-1 in the described password key circuit 21, the output of this gate circuit M8 is connected the trigger end of warning circuit 26 again, and the latter's output then is connected to loudspeaker SP.

Lock according to the door knob that the utility model is made, traditional bolt structure advantage obtains keeping basically in the lock box, electronic password control circuit then utilizes a pulse counter chip to combine with simple coding circuit dexterously, can realize complicated coding, decoding function equally, cost is then much lower.Under the cooperation of pseudo-code identification circuit and defeated sign indicating number timing circuit, can make this electronic cipher circuit have good reliability and practicality.

The utility model is described in further detail below in conjunction with drawings and Examples:

Fig. 1 is the lock box structural representation in the utility model;

Fig. 2 is an electronic password control circuit electricity theory diagram;

Fig. 3 is the electromagnetism pin part structural representation of lock box;

Fig. 4 is the executive circuit schematic diagram;

Fig. 5 is the control circuit electrical schematic diagram.

Door knob lock in Fig. 1 and Fig. 2 is provided with big dead bolt 1,2 two dead bolts of little dead bolt, and is the same with many door locks.The plate 9 of dialling of little dead bolt 2 is installed on the big dead bolt 1 through lock shaft 15, with big dead bolt 1 motion.Guide finger 8 makes little dead bolt 2 keep the linear direction motion, and spring 12 is bearing in the rear end of little dead bolt 2.One of the suit shift fork 13 of unblanking after big dead bolt 1 is retracted in the lock box, clockwise rotates handle axle sleeve 14 on the handle axle sleeve 14 of lock box base plate 16 central authorities, and shift fork 13 is stirred little dead bolt and dialled plate 9, and little dead bolt 2 is pressed in the lock box.The structure of the big dead bolt 1 of the utility model has been done improvement, on tongue body, install one and unblanked to dial plate 4, by bearing pin 5 both are connected, bearing pin 5 is provided with reduction torsion spring 10, makes to dial plate 4 clockwise directions and reset, and (its direction is by with the lock box horizontal positioned in the left side of it and big dead bolt 1, form a profile of tooth breach of unblanking down together), the effect of this breach is as the shift fork breach on the existing dead bolt, and when shift fork 13 inserted this breach rotation, big dead bolt 1 just can be along guide finger 7 work advance and retreat motions.The limiting plate 3 at big dead bolt 1 back side is provided with spacing card, and under the effect of spring 11, spacing card enters the breach on big dead bolt 1 right side, makes big dead bolt 1 be positioned lock, opens two extreme positions.On group plate 4, also be provided with a lockhole 6.When handle axle sleeve 14 rotates counterclockwise, under shift fork 13 promotes, to dial plate 4 and can swing, 1 of big dead bolt is extrapolated under shift fork 13 promotes.When big dead bolt 1 is pushed out to extreme position again during rotary axle box 14, shift fork 13 makes once more dials plate 4 counter-clockwise swings, and this moment, the electromagnetism pin 19 inserted in the lockhole 6 of dialling plates 4, makes to dial plate 4 and can not promote any one parts in the lock box.Electromagnet l8 is installed in the outside of lock box 17, and electromagnetism pin 19 heads are spherical.

For making things convenient for unlock operation, the shift fork 13 that handle axle puts is established symmetrically and is adorned two, and when axle sleeve 14 rotated like this, the effect of shift fork had just diminished at interval.

After electromagnet 18 energisings, electromagnetism pin 19 moves upward, and leaves the lockhole 6 of dialling plate 4, dials plate 4 and resets, and shift fork 13 clockwise rotates, and promotes to dial plate 4 and drive big dead bolt 1 to move in lock box, finishes unlock operation.

Circuit part, core is a pulse counter chip IC 1, here used CD4022 8-digit device, utilize its 6 low level output Q0-Q5, encoded matrix circuit 22 and password key circuit 21, to triggering signal of a monostable trigger 23 output, the output of this single-shot trigger trigger 23 and chip IC 1 (P holds and is connected, and the clock signal of chip IC 1 is actually that output signal by chip self obtains like this.A high-order output Q6 of chip IC 1 is connected with another single-shot trigger trigger 24, and the output a point of this single-shot trigger trigger 24 then is connected with a point of executive circuit.When the Q6 of IC1 was high level, broad pulse of single-shot trigger trigger 24 outputs was used for controlling electromagnet 18.

The utility model circuit also is provided with a defeated sign indicating number timing controlled single-shot trigger trigger 20, and its input is connected with the start button K switch, and output is connected with the reset terminal R of chip IC 1 through a nor gate M5 and isolating diode.

More than be core circuit, its operating principle is as follows: single-shot trigger trigger 20 is output as high level when starting switch K is closed, and the R end of chip IC 1 is low level, and Q0 transfers high level to, begins defeated sign indicating number timing controlled simultaneously; This moment, single-shot trigger trigger 23 was to positive pulse of the CP of IC1 end output as if K2 key closure, and Q1 transfers high level to.Press among Fig. 3 shown in the encoder matrix circuit 22, if at the appointed time according to K2-K1-K6-K3-K4-K5 order button, Q6 transfers high level to so, and single-shot trigger trigger 24 outputs are that circuit a point is to broad pulse of executive circuit transmission.If above-mentioned at the appointed time password input finishes, single-shot trigger trigger 20 output level upset so, the output of gate circuit M5 and R end are high level, chip IC 1 zero clearing.

Pseudo-code key 21-1 and corresponding codes matrix circuit 22-1 combine and pass through not gate M8 again, to warning pulse signal of warning circuit 26 outputs.Its operating principle is that any key is pressed in pseudo-code key K7-K0, and not gate M8 input is that its output of low level is a high level, and circuit b point obtains a positive pulse, can be used to trigger warning circuit 26 work and sends chimes of doom by loudspeaker SP.Return a positive pulse at circuit C point from warning circuit 26, lead to the R end of chip IC 1, make its output zero clearing.

Because of the warning circuit comparative maturity, all be that an audio signal circuit adds loudspeaker basically, so repeat no more.

The output Q0-Q5 of this circuit chips IC1 and encoder matrix circuit 22 with through diode-isolated, so repeated code can be set during coding.To divide be principle for convenience of explanation in the zone of cryptographic key 21 and pseudo-code key 21-1 among the figure, and in fact all there are two kinds of selections of the true and false in any one key among the K1-K0, is selected arbitrarily by coding person oneself.

3 single-shot trigger triggers use 6 nor gates among the figure, and they are that M1 and M2 form single-shot trigger trigger 23, and M3 and M4 form single-shot trigger trigger 20, and M6 and M7 form single-shot trigger trigger 24.Whole circuit needs 8 nor gate M1-M8 altogether, uses two CD4001 to get final product.

Fig. 3 is a typical executive circuit, and the positive pulse of ordering from circuit a makes it triode VT conducting, triggers integrated IC2 of high power switch, and electromagnet 18 is its output loadings.Also be provided with reserve battery BA in the circuit in addition, electronic password control circuit can be worked as usual during power failure.Chip IC 2 can be selected MT8778 for use.

Claims (2)

1. an electronic gate is lock, it is made up of the lock box and the electronic password control circuit of tongue with lock, it is characterized in that, described lock box is provided with an oscillating tooth dead bolt, it is by dead bolt main body [1], unblank to dial plate [4], reduction torsion spring [10] and electromagnet [18] are formed, the described group plate [4] of unblanking flexibly connects through bearing pin [5] with dead bolt main body [1], both reduction torsion springs [10] are located on this bearing pin, go up control lockhole [6] in addition at the described group plate [4] of unblanking, dialling plate [4] is provided with and resets and unblank two extreme positions, when dialling plate [4] when being in reset position, form the profile of tooth breach of unblanking between it and the dead bolt main body [1], when dialling plate [4] when leaving lockset position of coupler, its control lockhole [6] is inserted by described electromagnetism pin [19] and fixes, described electronic password control circuit is a core with a pulse counter chip IC 1, comprise password key circuit [21], encoder matrix circuit [22], single-shot trigger trigger [20], [23], [24] and executive circuit [25], wherein, each road button K1 of password key circuit [21], K2, K3, K4, each low level output Q0 of each corresponding input of the encoded matrix circuit of each tapping point [22] of K5 and pulse counter chip IC 1, Q1, Q2, Q3, Q4, Q5 connects, and the signal input part of the steady circuits for triggering of button common port order [23] of password key circuit [21], the latter's output then is connected with the CP end of pulse counter chip IC 1, the high-order output Q6 of this chip IC 1 connects signal input part to executive circuit [25] through the contact a of another single-shot trigger trigger [24], export the execution control signal by the latter, described electromagnet [18] then is the output loading of this executive circuit [25], the 3rd single-shot trigger trigger [20] is a timing circuit, (be connected with the power supply hot end, its output is connected with the reset terminal R of chip IC 1 through gate circuit M5 and isolating diode its input through start button.

2. electronic gate according to claim 1 is lock, it is characterized in that, also be provided with a warning circuit [26] in the described electronic password control circuit, it connects a pseudo-code trigger gate circuit M8 by the encoded circuit of pseudo-code key [21-1] [22-1] in the described password key circuit [21], the output of this gate circuit M8 is connected the trigger end of warning circuit [26] again, and the latter's output then is connected to loudspeaker SP.

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