CN2385037Y

CN2385037Y - TM electronic lock

Info

Publication number: CN2385037Y
Application number: CN 99232109
Authority: CN
Inventors: 何景光
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-07-15
Filing date: 1999-07-15
Publication date: 2000-06-28
Anticipated expiration: 2009-07-15

Abstract

The utility model relates to a lock which is composed of an electronic control circuit and an electromagnetic mechanical lock, wherein, the electric control circuit part is composed of a TM chip key, a key interface, a memory, a CPU and an electromagnetic driving circuit and compares and discriminates data in a key to determine to send an unlocking command or not, and the electromagnetic mechanical lock is composed of a main clutch, an auxiliary clutch, an iron core, a coil, an iron core sleeve, etc. When the lock has unlocking information, the iron core is attracted, the iron core sleeve is away from the auxiliary clutch, the main clutch and the auxiliary clutch are engaged, and the lock can be opened. When the lock is locked, main clutch and the auxiliary clutch are disconnected from contact, and a lock tongue does not move. The lock has the advantages of novel and simple structure, no misoperation and good safety. A lock casing is a postposition type. The lock is suitable for doors with various kinds of thickness.

Description

The TM electronic lock

The utility model relates to a kind of TM electronic lock.

Existing electronic lock kind is more, the ubiquity price is expensive, complex structure, bulky shortcoming, its lock core box need be installed in the middle of the body, this will dig out a bigger cavity on the door body, therefore, have only than higher gears, the more sturdy door of structure electronic lock could be installed, cause the inconvenience of some local-style dwelling houses and office premises to be installed.

The purpose of this utility model is a kind of simple in structure, volume is little, safety good, price is lower TM electronic lock of design, to satisfy the demand of variant hierarchy of consumption.

The utility model has reached above-mentioned purpose of design, it comprises lock housing, lock core, handle and electronic sensor control circuit, it is characterized in that lock core is by the lock core coil, the pure iron iron core, iron core sleeve, the iron core spring, main, side clutch, clutch spring, clutch base and driver blade constitute, iron core is arranged in iron-core coil, stretch out and iron core sleeve its lower end, link to each other with iron core sleeve, iron core sleeve is main, the out-of-gear locating part of side clutch, on installation of iron core spring and the iron core, side clutch links to each other with outer handle with driver blade by clutch base, the two rotates synchronously, and main clutch and Internal handle are connected; Electronic control circuit is made of TM chip key, TM key interface and electronic identification circuit and Electromagnetic Control circuit, has conductors of information to link to each other between TM key interface and the electronic identification circuit, and Electromagnetic Control circuit information output links to each other with iron-core coil.

Operating principle of the present utility model is:

When 1, locking, microprocessor is in the sleep duty, and iron-core coil does not have drive current, and the pure iron iron core is failure to actuate, and side clutch is spacing by iron core sleeve, can not mesh with main clutch, though outer handle and side clutch interlock also can only be dallied, can not unblank;

2, when unblanking, with TM chip key touching TM key interface probe place, data that the interface probe reads in from the TM chip key and the data in the memory in the control circuit compare, if it is identical, then microprocessor sends the information of unblanking, and the electric current that drive circuit produces flows into the lock core coil, inhales moving pure iron iron core and inwardly moves, because of iron core links to each other with iron core sleeve, move upward so drive iron core sleeve, leave side clutch, side clutch is released, under the promotion of clutch spring, with the main clutch engagement, outer handle drives Internal handle and rotates, and Internal handle is stirred shift fork, the dead bolt action, lock promptly is opened.

In order to guarantee that major and minor clutch disengages fully when locking, this TM electronic lock is provided with a return pin in lock body, this return pin is positioned at the lock housing bottom, when major and minor clutch disengages fully, return pin also breaks away from side clutch and lock core cover fully, in order to avoid produce misoperation because of friction.

This TM electronic lock is made of electronic control circuit, microprocessor, memory and electromagnetic mechanism, memory is used for storing and reading and writing the data and the password of TM chip key, the driving signal born identification, judges and sends by microprocessor, electromagnetic mechanism produces drive current, inhale moving iron core, discharge side clutch.

In order to make the TM electronic lock have the power down emergency function, the utility model is provided with the charging accumulator in control circuit.

In order in time to notify owner to replace battery when the line under-voltage, under-voltage signal circuit and condition indication circuit are set in this TM electronic lock control circuit, when power supply dropped to a certain setting voltage, under-voltage signal circuit sent under-voltage signal, and was shown by condition indication circuit after CPU handles.

Store 2 in the TM chip key of this TM electronic lock ⁶³Individual code data, therefore, the possibility that key opens by mistake two locks is almost nil, thereby makes the safety of electronic lock obtain the guarantee of fullest.

For making this TM electronic lock in use convenient, this TM electronic lock has been adopted the normal opening structure and the back locking structure of standard machinery lock;

For making this TM electronic lock be difficult for being rushed open under strong destruction, the utility model adopts mid-dead bolt structure;

For adapting to the demand of each hierarchy of consumption, reduce the requirement that dress is locked a door, lock box of the present utility model is taked rearmounted lock box form, and dead bolt is placed behind the door with lock box, has avoided digging a hole on the door body, and therefore, this lock can adapt to the door of all thickness.

Because this TM electronic lock has been taked the lock core structure and the TM chip key that show unique characteristics, and corresponding smart electronics identification, judgement, control circuit, make this TM electronic lock have novel structure, simple, good, multiple functional, the adaptable distinguishing feature of safety, thereby become noticeable door lock rising star.

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

This lock of Fig. 1 assembling relationship figure

The A-A sectional drawing of Fig. 2 Fig. 1

Fig. 3 control circuit block diagram

Fig. 4 control circuit electrical schematic diagram

The major and minor clutch profile of tooth of Fig. 5 figure

As seen from the figure, this TM electronic lock comprises lock housing 2, iron core, Internal handle 1 and electronic control circuit, it is characterized in that iron core is by iron-core coil 18, pure iron iron core 19, iron core sleeve 10, main clutch 3, side clutch 4, clutch base 17, clutch spring 6, iron core spring 20 and driver blade 7 constitute, pure iron iron core 19 is positioned at iron-core coil 18, on 20 installations of turriform iron core spring and the iron core 19, stretch out and iron core sleeve 10 the iron core lower end, be connected with iron core sleeve, iron core sleeve is main, the out-of-gear locating part of side clutch, side clutch 4 connects with clutch base 17 feather keys, driver blade 7 one ends are fixed on the outer handle 12, the other end stretches in the flat hole of clutch base 17, be connected with clutch base 17 feather keys, thereby make outer handle 12 and side clutch 4 interlocks.When this TM electronic lock was in the lock state, 10 pairs of side clutches of iron core sleeve were spacing, and it can not be meshed with main clutch 3, therefore caused outer handle idle running and the door lock of not opening; When unblanking, the drive current of electronic control circuit output flows into iron-core coil 18, inhaling moving iron core moves upward, driving iron core sleeve 10 moves upward together, away from side clutch, side clutch is released, under the promotion of the clutch spring 6 in clutch base 17, with main clutch 3 engagements, outer handle rotation can be opened the door.Major and minor clutch profile of tooth of the present utility model is identical, as shown in Figure 5.Side clutch 4 is tooth of forward and reverse rotation (about 10 °) no matter, but all teeth groove alignment realize engagement.

After unblanking, clutch need break away from engagement and reset.No longer rotate after main clutch 3 is returned to initial position, the rotation that continues to reset of outer handle 12 under the promotion on profile of tooth inclined-plane, is compressed clutch spring 6, makes its disengage from.Reset fully for after guaranteeing to unblank, do not produce misoperation, the utility model is provided with a return pin 5 in lock housing bottom correspondence with the side clutch position, when outer handle 12 is returned to initial position, return pin 5 promotes further compression clutch spring 6 of side clutch 4, when major and minor clutch was disengaged fully, side clutch 4 also disengaged fully with iron core sleeve 10, reached fully to reset.

This lock has also kept often the opening of standard machinery built-in lock, back locking structure.When often opening, often open shifting block 16 and can force iron core sleeve 10 withdrawals, only need swing handle to open the door; When locking, lock shifting block 14 shift fork 15 is blocked, dead bolt 8 can not be moved, no matter the inside and outside handle of turn all can not open the door, and reaches indoor purpose of locking.

The control circuit of this TM electronic lock is made of TM chip key, TM chip key interface, action recognition circuit and Electromagnetic Control circuit, have information wire to link to each other between TM key interface and the electronic identification circuit, Electromagnetic Control circuit signal output links to each other with the lock core coil.In the present embodiment, electronic control circuit is by TM interface circuit U ₄(D59503) and peripheral circuit, U ₂(24LCO2B), microprocessor U ₁(286E04), comparator U ₃(LM393), drive circuit T ₁, T ₂(S58550) constitute.When locking at ordinary times, cpu is in the sleep duty.In the time of need unblanking, with TM chip key touching TM key interface probe 13, cpu is waken up, and the data that the interface probe reads in from the TM chip key are at U ₂Relatively middle, identical, then information is passed to cpu, sends the information of unblanking by cpu, and drive circuit produces drive current and flows into the lock core coil, and lock core and lock core cover is moved, and realizes unblanking.Otherwise, if U ₂Compare the data of reading in the back identification TM chip key and be not authorized key, then do not send unlock instruction, lock and still do not open.

For preventing power down, promptly electric energy exhausts in the electronic lock, and the utility model electrical control circuit has been introduced the charging accumulator, can be by external power source through U ₄With diode D ₂To electrochemical capacitor C ₃Charging;

Comparator U in the circuit ₃(LM393) and peripheral circuit be under-voltage signal circuit.When power Vcc drops to 4.2V when following, by U ₃1 human hair combing waste goes out under-voltage signal, and cpu samples when unblanking, and determines whether to send under-voltage prompting.

Luminous tube L ₁, L ₂, buzzer and driving tube T ₃(58550) constitute condition indication circuit.By cpu send unblank, under-voltage acousto-optic hint such as be provided with.

Claims

1, TM electronic lock, comprise lock housing, iron core, inside and outside handle and electronic control circuit, it is characterized in that lock core is made of lock core coil, pure iron iron core, iron core sleeve, major and minor clutch, clutch base, clutch type spring, iron core spring and driver blade, the pure iron iron core is positioned at iron-core coil, the iron core spring is installed on it, iron core lower end and iron core sleeve are connected, iron core sleeve is the out-of-gear locating part of major and minor clutch, side clutch links to each other with outer handle with driver blade by clutch base, the two rotates synchronously, and main clutch and Internal handle are connected; Electronic control circuit is made of TM chip key, TM key interface and electronic identification circuit and Electromagnetic Control circuit, has conductors of information to link to each other between TM key interface and the electronic identification circuit, and Electromagnetic Control circuit signal output links to each other with iron-core coil.

2, TM electronic lock as claimed in claim 1 is characterized in that there is a return pin lock housing bottom corresponding to side clutch.

3, as claim 1 and/or 2 described TM electronic locks, it is characterized in that electronic recognition and Electromagnetic Control circuit are made of microprocessor, memory and circuit driven by electromagnetic means, there is data wire to link to each other between memory and the microprocessor, has information wire to link to each other between microprocessor and the drive circuit with information wire.

4, TM electronic lock as claimed in claim 3, it is characterized in that having in the circuit charging energy storage, under-voltage signal and condition indication circuit, charging accumulator information input terminal links to each other with TM key interface circuit, under-voltage signal circuit signal output part links to each other with the microprocessor signals input, and the microprocessor signals output is connected with condition indication circuit.