CN1127835A

CN1127835A - Key insertion type electronic puzzle lock

Info

Publication number: CN1127835A
Application number: CN 95100384
Authority: CN
Inventors: 郑卫中
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-01-27
Filing date: 1995-01-27
Publication date: 1996-07-31

Abstract

The key-insertion type electronic puzzle lock features that its cipher is stored in electronic device and encoded infrared signals are used for recognition and unlocking. Infrared transmitter and receiver are packed in integrated circuit element and optical fibre is used to transfer infrared signals. When electronic puzzle lock's key similar to ordinary mechanical one is inserted in lock hole, encorded infrared signals begin to transmit and receive. It has very high anti-theft function.

Description

Key insertion type electronic puzzle lock

Key insertion type electronic puzzle lock is to use the electronic component stored password, and the electric lockset with the identification of infrared coding signal do and the signal of unblanking is commonly referred to " electronic password lock ".

Electronic password lock is divided into lock body and key two parts usually.During use, key sends cipher signal as the signal of unblanking, after lock body receives cipher signal, just with electronic component in the password that stores contrast.If external signal conforms to the internal memory password, just send the signal of unblanking and give electromechanical device, lock is opened.If cipher signal does not conform to, just send alarm signal and give warning device, stop simultaneously receiving any signal, and continue for some time.

At present, the mode that electronic password lock sends password and reception password has modes such as button, infrared emission formula, radio transmission formula and magnetic card type.Owing to use inconvenient and other various shortcoming, be difficult to generally use.Button sends password, needs user's memory cipher numeral, misremembers easily, and more number can not be set, and is stolen a glance at by the onlooker easily again, and security performance is very low.Infrared emission formula and radio transmission formula need be carried transmitter, and magnetic card type need carry magnetic card, and be both inconvenient, damages easily again, do not meet people's use habit.People carry bunch of keys usually, and the uncomfortable flimsy transmitter of a pile that carries.

Key insertion type electronic puzzle lock (hereinafter to be referred as " the present invention ") is a too little and shape of infrared emission formula cipher key being made the standard machinery key, injects the infrared cipher signal of the interior emission of lockhole of lock body.The infrared transmitter of key is to approach the infrared remote receiver of lock body and launch signal, only needs very little power just enough, for example can use button-type lithium cell to make power supply, is convenient to transmitter is made microminiaturization.Infrared-emitting diode and infrared reception triode are with storage, the analysis circuit of cipher signal, be encapsulated in the chip of integrated circuit, in the reception signal input chip and, between the groove of optical fiber plant key plug infrared signal is delivered to the top of key plug with optical fiber sending outside the signal pio chip.The chip of integrated circuit can be done the totally-enclosed encapsulation of moistureproof, anti-electromagnetic interference with metal, with interference and the infringement of avoiding external environment condition.

Electronic cipher storage capacity of the present invention and signal disposal ability only are subjected to the restriction of chip integration, can hold long cipher signal and complicated signal handling procedure, make security performance reach very high degree.The process that the transmits and receives required time of infrared signal is very short, and all correct opening programs can for example be finished in 1/10th seconds in a short period of time, and the user does not feel existence during this period of time when unblanking.The appearance and size of Electronics Cryptographic Keys and using method, almost completely identical with the standard machinery key, use and carry all convenient equally.

Complicated signal handling procedure can provide the present invention multiple functional performance.Below for two examples:

1. infrared signal of the present invention approaches and transmits and receives, and cipher key has the ability that receives signal, and the recognition technology of the answer that can access to your password is to improve privacy degrees.Promptly in key chip and lock body chip, store many groups respectively and answer signal.After key sent initial unlatching signal, being checked errorless, lock body was promptly selected some groups of interrogation signals randomly, and key need be done corresponding answer.Through answer errorless after, lock body is just unblanked.If answer is wrong, if the interrogation signal of lock body is wrong, key just refusal is answered and is continued for some time.Like this, though the stranger steal key and have copying equipment, also can only steal initial unlatching signal, extremely difficulty is stolen whole key ciphers.If the answerback of key is wrong, lock body also quits work and continues for some time.Like this, even the stranger has the electronic equipment of " runin lock ", also be difficult to unblank with the method for " runin ".

At the hotel, the hotel needs the design of " primary and secondary keys ", that is: each room key can only be opened the lock of door separately, the floor key can be driven the lock of same floor, master key can be driven the lock in each room, bed rearrangement building.The present invention can be easy to reach this requirement.Method is: set up " floor unlocking cipher " and " master key unlocking cipher " in the lock body chip, just can reach this requirement.

Narrate a design example of the present invention below in conjunction with accompanying drawing:

The present invention is made up of coded lock and cipher key (shown in the figure one) two parts.The substrate of key (shown in the figure two) is a key shape of making the standard machinery lock with metal.Substrate can be divided into plug portion (1) and shank portion (2).Plug portion (1) has the groove (3) of standard machinery key.This groove (3) is the orientation inserted of key fixedly, and interior radiated element, the receiving element of the infrared emission, receive window (15) (16) that makes key and lockhole accurately docks.Minor groove (4) is carved with along the direction that is parallel to groove (3) in groove (3) both sides, is used to lay optical fiber (5).Groove (3) next door also has a duck eye (6), is used to lay micro power switch (7).

Substrate shank portion (2) is provided with two pits (8) (9), be respectively applied for and lay integrated circuit component (10) and button cell (11).There is little screw (14) on pit (8) (9) next door, is used for clam member (13).Launch window (15) and the receive window (16) of the minor groove (4) of laying optical fiber (5) from the pit (8) of laying integrated circuit component (10) to the substrate top.

Integrated circuit component shown in the figure three (10) is encapsulated into the shape of similar button cell.It has a columnar metal shell (17).Shell (17) is again the positive pole of integrated circuit component (10) simultaneously.There is a columnar rigid insulation inner casing (18) the inside of shell (17), IC chip (19) comprise electronics such as crystal oscillator in addition part all place inner casing (18) the inside.It around the chip (19) insulation filler (20) of sealing usefulness.One circular upper cover (21) places above the inner casing (18).Loam cake (21) central authorities are protruding upward, as the negative pole of integrated circuit component (10).There is a circle elastic insulated packing ring (22) at the edge of loam cake (21), is pressing packing ring (22) in the middle of the edge of cylindrical housing (17) is folded to, and by packing ring (22) loam cake (21), inner casing (18) is being compressed.The side of inner casing (18), shell (17) has aperture (23), and emission is drawn from chip (19) with optical fiber (5) with optical fiber and reception, draws shell (17) outside by aperture (23).

Micro power switch (7) and substrate insulation.Two lead-in wires (24) of switch (7) connect the negative pole of integrated circuit component (10) and the negative pole of button cell (11) respectively.Under normal conditions, the button of switch (7) protrudes in the outside of substrate, and switch (7) disconnects.When key injected lockhole, the inwall of lockhole compressed button, makes switch (7) conducting.After key was transferred to lockhole, button loosened, and switch (7) disconnects.Prior art can provide the structure of power switch to reach this requirement, and this paper no longer narrates.

Integrated circuit component (10) is installed in respectively in two pits (8) (9) of substrate with button cell (11).The mode of installing, be just their positive pole and substrate contacts conducting, negative pole and substrate insulate, and respectively with two leads (24) conducting of power switch (7).Prior art can provide straightforward procedure to reach this requirement, and this paper no longer narrates.Optical fiber (5) is drawn from integrated circuit component (10), lays the end that arrives minor groove (4) along minor groove (4), uses adhesive again in minor groove (4), and the end of minor groove (4) is launched signal with regard to conduct and received the window (15) (16) of signal.Outside at integrated circuit component (10) and button cell (11) presses pressing plate (13), pressing plate (13) is fixed on the substrate with Screw (12), and cipher key is with regard to installation.

Lock body of the present invention has the lockhole of standard machinery lock and the electromechanical switch device and the warning device of ordinary electronic coded lock.The integrated circuit of lock body also is packaged into the element of similar button cell.This element also is useful on the security optical fiber of opening electromechanical unlatching optical fiber and being used to report to the police except launching fiber being arranged and receiving the optical fiber.The security optical fiber of opening optical fiber and warning also can replace with lead.The end of launching fiber and reception optical fiber is fixed on the lockhole back, and faces lockhole.After key injected lockhole, the launch window of key (15) should face the reception optical fiber of lock body, and the receive window of key (16) should face the launching fiber of lock body.

The course of work of the present invention is as follows: lock body is in holding state.After key injected lockhole, the lockhole inwall compressed power switch (7), power connection, and key is started working, and sends the interrogation signal of initial unlatching signal and answer lock body.After answer was errorless, lock body sent one section continuous signal, and notice key shut-off circuit is to save electric energy.By optical fiber (perhaps lead) signal of unblanking is delivered to electromechanical device simultaneously, lock is opened.If answer wrongly, when key is received wrong interrogation signal, just quit work and continue for some time.When lock body is received wrong answerback, just quit work and continue for some time, by security optical fiber (perhaps lead) alarm signal is delivered to warning device simultaneously.Can establish delay switch on the lock body and shut usefulness.

Claims

Key insertion type electronic puzzle lock belongs to a kind of use electronic component stored password, makes the electric lockset of the identification and the signal of unblanking with the infrared coding signal.It is characterized in that:

1. the lock body of electronic password lock has the lockhole of standard machinery lock, and the key of electronic password lock is made the shape of the key of standard machinery lock, injects in the lockhole and transmits and receives infrared signal.

2. the described device of claim 1., it is characterized in that infrared-emitting diode and infrared reception triode all are encapsulated in the IC chip (19), use optical fiber (5) to transmit the light signal between infrared emission, the receive window (15) (16) at IC chip (19).

3. the described device of claim 1., the substrate that it is characterized in that cipher key is a shape of making the standard machinery key with metal, other parts of cipher key all are installed on the substrate.

4. the described device of claim 1., it is characterized in that integrated circuit component (10) is packaged into the profile of similar button cell, the metal shell (17) of element (10), loam cake (21) are respectively as the positive pole and the negative pole of element (10), IC chip (19) places in the element (10), and optical fiber (5) passes outside housing (17) the side extraction elements (10).

5. the described device of claim 1. is characterized in that the power switch (7) of cipher key is placed on the plug portion (1) of key, in the time of in plug (1) injects lockhole, utilizes lockhole inwall clamping switch to connect power supply.