CN2162505Y

CN2162505Y - Multifunction siren anti-theft door lock

Info

Publication number: CN2162505Y
Application number: CN 93212749
Authority: CN
Inventors: 林金龙; 叶允敏; 范志强
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-05-14
Filing date: 1993-05-14
Publication date: 1994-04-20
Anticipated expiration: 2003-05-14

Abstract

The utility model relates to an alarm anti-theft door lock. An alloy steel probe head is clamped in a lock tongue. The lock tongue and the alloy steel probe head are mutually insulated and form a pair of contact switches of an alarm circuit. An insulating baffle plate is fixed on the lower part of a lock tongue assembly. A contacting sheet which is communicated with the alarm circuit and matched with an inclined tongue is installed on the insulating baffle plate. A moving contact sheet is installed on the right wall surface of a lock case to form the alarm contact switches with a right convex shoulder of a pull rod of the inclined bolt. A stop switch of the alarm circuit is installed in a position which a drawing body can contact when the lock tongue completely returns. The utility model can avoid prizing and sawing the lock tongue and the inclined tongue, and can raise the alarm.

Description

Multifunction siren anti-theft door lock

The utility model relates to a kind of alarm burglar-proof door lock.

Existing theftproof alarm door is latched in following shortcoming: one, dead bolt hardness is low, generally uses the copper material manufacturing, and the robber can pass the sawed-off dead bolt of crack between a door and its frame and the crime of entering the room with hacksaw, and warning circuit is also reactionless to this.Two, after owner goes home, generally no longer dead bolt is locked in order to pass in and out conveniently, often the burglar can take advantage of another's unpreparedness and unplug oblique tongue from crack between a door and its frame at this time, the crime of entering the room, and warning device is to this situation and reactionless.

The purpose of this utility model is to provide a kind of dead bolt energy pick-proof, anti-saw, can send warning to the behavior of saw, picking lock tongue, and can be to the burglar-proof alarm door lock of oblique tonguing row monitor alarm.

The utility model comprises tapered end, lock body, lock body comprises housing 23, dead bolt composite member 5, oblique tongue composite member 16, battery case 20, warning circuit plate 11, loudspeaker 9, tapered end connects dead bolt composite member 5 by water caltrop 8, clamp an alloy steel probe 2 in the dead bolt 1, isolate mutually with insulation sleeve 3 between dead bolt 1 and the alloy steel probe 2, dead bolt 1 and alloy steel probe 2 constitute the contact switch of a pair of warning circuit; Dead bolt composite member 5 bottoms affixed an insulation barrier 17, two contacts 6,18 of mutual conduction are installed on the insulation barrier 17.Contact 6,18 connects warning circuits, and contact 6 cooperates with contact 22 on the housing, and the lower edge of insulation barrier 17 is lower than the upper limb of oblique tongue 21 shoulders, the contact switch of contact 18 and a pair of warning circuit of oblique tongue 21 formations; An active key 13 is installed on the housing 23 right side walls, and active key 13 connects movable contact flat 12, and the right part convex shoulder of movable contact flat 12 and oblique tongue pull bar constitutes the contact switch of a pair of warning circuit; The shutdown switch 10 of warning circuit plate 11 is installed in dead bolt 1, and it drags 7 of bodies can touch the place when returning fully.

The bottom of locking head connecting rod 24 has the recess that matches with the key nose shape, locking head connecting rod 24 respectively connects a slice metal derby at the place, wall both sides of break-through lock tube 31, the lower wall surface of metal derby 25 equals the wall thickness of lock tube 27 apart from the distance of the upper wall surface of metal derby 26, respectively have and described metal derby shape corresponding grooves both sides up and down with

metal derby

25,26 corresponding site walls on the lock tube 31, fix a metal contact that is communicated with warning circuit in each groove.

Battery case 20 connects shell fragments 19, and shell fragment 19 1 ends are fixed on the battery case 20, other end perk, and withstand the inwall of housing 23.

The utility model has the advantages that can the pick-proof anti-saw of dead bolt, the hardness ratio hacksaw of alloy steel probe wants the high burglar can't it is sawed-off, and, in case cut the alloy steel probe, dead bolt with pop one's head between will conduct, thereby make the warning circuit closure send warning; Second advantage is to monitor oblique tonguing row, when owner is in and need takes precautions against, only need on the dead bolt one grade, and press active key, if tiltedly the right part convex shoulder of tongue pull bar will be run into contact and the warning circuit closure is given the alarm from prizing oblique tongue outdoors or spurring oblique tongue handle this moment; The 3rd advantage is that battery case is installed firmly, loading and unloading are easy.

Further specify the utility model below in conjunction with accompanying drawing;

Fig. 1 is the sectional view of lock body.

Fig. 2 is the positive view of tapered end.

Fig. 3 is the sectional view of tapered end.

Fig. 4 is the vertical view of tapered end.

Fig. 5 is the warning circuit schematic diagram.

With reference to accompanying drawing;

Lock body of the present utility model comprises housing 23, dead bolt composite member 5, oblique tongue composite member 16, battery case 20, warning circuit plate 11, loudspeaker 9, and tapered end connects dead bolt composite membeies 5 by water caltrop 8; Clamp an alloy steel probe 2 in the dead bolt 1, alloy steel probe 2 is fixed on the plastic plate 3, plastic plate 3 is connected on the dead bolt composite member 5, isolate mutually with insulation sleeve 3 between dead bolt 1 and the alloy steel probe 2, alloy steel probe 2 connects warning circuit, and dead bolt 1 and alloy steel probe 2 constitute the contact switch of a pair of warning circuit; Two contacts 6,18 of mutual conduction are installed on the insulation barrier 17, contact 6,18 connects warning circuit, contact 6 cooperates with contact 22 on the housing, and the lower edge of insulation barrier 17 is lower than the upper limb of oblique tongue 21 shoulders, and contact 18 and oblique tongue 21 constitute the contact switch of a pair of warning circuit; An active key 13 is installed on the housing 23 right side walls, active key 13 connects movable contact flat 12, across insulating trip 15, when pressing active key 13, the right part convex shoulder of movable contact flat 12 and oblique tongue pull bar constitutes the contact switch of a pair of warning circuit between movable contact flat 12 and the housing 23; The shutdown switch 10 of warning circuit plate 11 is installed in dead bolt 1, and it drags 7 of bodies can touch the place when returning fully, when dead bolt 1 is shunk back into lock body fully, and shutdown switch 10 pressurizeds, warning circuit quits work.Battery case 20 connects shell fragment 19, and shell fragment 19 1 ends are fixed on the battery case 20, other end perk, withstand housing 23 inwalls, change battery, as long as oblique tongue 21 is drawn in the lock body as need, and put in inclined tongue hole with a spillikin, and depress shell fragment 19, battery case 20 can eject automatically.

The bottom of locking head connecting rod 24 has the recess that matches with key 33 nose shapes, locking head connecting rod 24 respectively connects a slice metal derby at the place, wall both sides of break-through lock tube 31, the lower wall surface of metal derby 25 equals the wall thickness of lock tube 27 apart from the distance of the upper wall surface of metal derby 26, both sides up and down with the wall of

metal derby

25,26 corresponding sites on the lock tube 31 respectively have and described metal derby shape corresponding grooves, fix a metal contact that is communicated with warning circuit in each groove.

When key 33 inserts cross recess lock core 32, because key 33 nose shapes and locking head connecting rod 24 base recess match, the length that locking head connecting rod 24 is pushed out is that metal derby 25 is pulled to the outer stroke of groove just, lock core can rotate flexibly and unblank smoothly, when key was extracted, locking head connecting rod 24 was at spring 30 and be fixed on to reset under the effect of the catch 29 on the lock core and enter groove.When the thief inserts tapered end with other keys or foreign matter, attempt rotational lock core and when opening the door, owing to misfit with the recess shape of locking head connecting rod bottom, the distance that locking head connecting rod 24 is gone out by pushing tow just is not that metal derby 25 is pushed up the outer stroke of groove just, if metal derby 25 is still stayed in the groove, lock core is as long as rotate a very little angle, then metal derby 25 will be connected with contact 27, warning circuit is triggered, and sends chimes of doom, and metal derby 25 is stuck in and can't continues in the groove to unblank simultaneously; If the pushing tow distance is long, then descend metal derby 26 to be pushed in the groove, as rotational lock core, also can trigger warning circuit.

The positive source of warning circuit meets positive-negative-positive triode BG ₁Emitter stage, BG ₁Emitter stage and base stage between and then K switch ₄, resistance R ₁, BG ₁Base stage connect resistance R ₂, resistance R ₂And follow K switch between the ground ₁, K ₂, K ₃Parallelled circuit, BG ₁Base stage meet NPN type triode BG ₂Colelctor electrode BG ₂Grounded emitter, BG ₂Base stage meet capacitor C ₁And resistance R ₃, resistance R ₃Through reverse diode D ground connection, BG ₁Colelctor electrode meet electrochemical capacitor C ₂With model be the four tones of standard Chinese pronunciation ic chip of KD9561 ₁The 5th, 6 pin, IC ₁The 7th, 8 pin between connecting resistance R ₄, IC ₁The 2nd pin ground connection, IC ₁The 4th pin meet NPN type triode BG ₃Base stage, BG ₃Colelctor electrode on meet loudspeaker Y.Power cathode body contact body 23.K switch ₁Metal derby and the contact that is cooperated on the corresponding locking head connecting rod, K switch ₂Corresponding alloy steel probe 2 and the formed contact switch of dead bolt, K switch ₃Corresponding tiltedly tongue 21 and contact 18 formed contact switch and oblique tongue pull bar and movable contact flat 12 formed contact switch, K switch ₄Corresponding shutdown switch 10.

When thief's sled, when sawing tapered end, dead bolt or oblique tongue, will be with K switch ₁, K ₂, K ₃In a connection, this moment BG ₁Conducting immediately, IC ₁Produce alarm signal, through BG ₃After the amplification, loudspeaker Y sounds the alarm, simultaneously capacitor C ₂Pass through resistance R ₃And BG ₂Be knot charging, charging current makes BG ₂Conducting makes BG ₁Continue conducting, continue to send chimes of doom.If K ₁, K ₂, K ₃All no longer trigger, after the general time of mistake, capacitor C ₂Last electric charge is full of, BG ₂End BG ₁Also end IC ₁The no current input, chimes of doom stops.If the thief is prizing always, then warning circuit is triggered always, and chimes of doom can not stop.When circuit ends, C ₂Pass through BG ₁Discharge is rapidly waited for next time and being triggered.Capacitor C ₁Establish for preventing impulse disturbances.When dead bolt withdrawal lock body, drag body 7 to touch shutdown switch 10, K switch ₃Connect BG ₁Base stage connects high potential, BG ₁End, warning circuit quits work.

When owner went out, with second gear on the dead bolt, the burglar was when saw picking lock tongue, and alloy steel is popped one's head in and the dead bolt conducting, and warning circuit is triggered, as prizes oblique tongue, and then tiltedly tongue and contact 18 are collided and triggered warning circuit.Owner is in and takes precautions against as need, can be with on the dead bolt one grade, and press active key, this moment tiltedly the tongue composite member can about free movable, in case there is the people to prize oblique tongue, the right part convex shoulder of dead bolt pull bar touches movable contact flat and triggers warning circuit.

Claims

1, a kind of alarm burglar-proof door lock, comprise tapered end, lock body, lock body comprises housing (23), dead bolt composite member (5), oblique tongue composite member (16), battery case (20), warning circuit plate (11), loudspeaker (9), tapered end connects dead bolt composite member (5) by water caltrop (8) and it is characterized in that: dead bolt (1), in clamp alloy steel probe (2), isolate mutually with insulation sleeve (3) between dead bolt (1) and the alloy steel (2), dead bolt (1) alloy steel probe (2) constitutes the contact switch of a pair of warning circuit; An insulation barrier (17) is fixed in dead bolt composite member bottom, the a pair of contact (6,18) of mutual conduction is installed on the insulation barrier (17), contact (6,18) connects warning circuit, the lower edge of insulation barrier (17) is lower than oblique tongue (21) shoulder upper limb, and contact (18) and oblique tongue (21) constitute the contact switch of a pair of warning circuit; An active key (13) is installed on the wall of housing (23) right side, and active key (13) connects movable contact flat (12), and the right part convex shoulder of movable contact flat (12) and oblique tongue pull bar constitutes the contact switch of a pair of warning circuit; The shutdown switch (10) of warning circuit plate (11) is installed in dead bolt (1), and it drags body (7) can touch the place when returning fully.

2, alarm burglar-proof door lock as claimed in claim 1, the bottom that it is characterized in that locking head connecting rod (24) has the recess that matches with the key nose shape, locking head connecting rod (24) respectively connects a slice metal derby at the place, wall both sides of break-through lock tube (31), the lower wall surface of metal derby (25) equals the wall thickness of lock tube (27) apart from the distance of the upper wall surface of metal derby (26), lock tube (31) is gone up and metal derby (25,26) wall of corresponding site respectively has and described metal derby shape corresponding grooves both sides up and down, fixes a metal contact that is communicated with warning circuit in the groove.

3, alarm burglar-proof door lock as claimed in claim 1 or 2 is characterized in that battery case (20) connects shell fragment (19), and shell fragment (19) one ends are fixed on the battery case (20), other end perk, and withstand housing (23) inwall.