EP2431949A1 - Electronic combination lock - Google Patents

Abstract

The lock (10) has a closing mechanism (14) for closing and opening the lock, and a control unit (22) opening the closing mechanism when an updated code is input to an input unit (16). A contact arrangement for connection to a direct current source is arranged on a rear side of the combination lock. Another separate contact arrangement (11b) for connection to the direct current source is arranged on a front side of the combination lock. The control unit sets a repeat code as the updated code when the repeat code is input to the input unit. An independent claim is also included for a method for opening a lock.

Description

The present invention relates to a lock. More particularly, the invention relates to an electronic combination lock suitable for industrial, commercial and residential applications. More particularly, the present invention relates to an electronic combination lock in which a person can enter a code and then the lock opens when the input code corresponds to a code stored in the lock.

Electronic combination locks without key are described in the context of the prior art. They are used in changing rooms or to secure luggage in train stations or airports or to protect building doors. Such locks are extremely useful if the authorized group of users changes frequently. If the authorization to open one or more locks is to be transferred from a previous user to a new user, there is no problem that a key has to be handed over from the former to the new user. Instead, simply change the code to open the lock. Then a former user who does not know the new code can not open the lock anymore. In addition, no further security measures are required to prevent the case that the former user could have copied the key.

Often several such locks are part of a central locking system. To change the code of one of the electronic combination locks, the reprogramming can be done by an online connection to the central locking system. Alternatively, on-site programming can be done by a technician.

It can be problematic if the locks are spatially far apart in the context of a central locking system. This is the case, for example, with locks used for closing doors in large buildings. In this case either complicated wired networks have to be laid or another type of communication between the locks and the central locking system has to be established, for example a radio network. It can also be problematic that local maintenance by technicians is time consuming and expensive.

It is an object of the invention to provide a lock which can be easily installed and requires minimal maintenance. A special goal is that the opening of the castle can be easily and easily restored almost independently by the user if he forgot or lost the key or access code or the lock is not open for other reasons with the access code.

Within the scope of an exemplary embodiment of the invention, a lock having a front and a back is provided comprising the following elements: an input unit for inputting the code; a control unit having a series of codes, one code set as the current code and one code as a sequence code; and a lock mechanism for closing and opening the lock, the control unit causing or allowing opening by the closing mechanism, if the current one Code is entered.

When the sequence code is input, the control unit sets the sequence code as current code. Furthermore, the lock comprises a first contact arrangement for connecting a current source, in particular a DC power source, wherein the first contact arrangement is preferably arranged on the rear side of the lock. Further preferably, the lock comprises, in addition to the first, an independent second separate contact arrangement for connecting a current source, preferably a direct current source, which is arranged in particular on the front side of the lock. The contact arrangement serves for the power supply of the control unit, the keyboard, an optionally present display, LEDs, etc. and the possibly electric closing mechanism, so that it causes or permits the opening, and / or a movable by an electric motor bolt, bolt or hook of the closing mechanism.

The second contact arrangement preferably comprises two contact areas, in particular contact points, which can be brought into contact with the plus and minus poles of a DC power source or else an AC power source. The first contact arrangement preferably comprises a wireless clip-in battery compartment or a corresponding adapter. Depending on the installation site of the locking system, it is also preferred for optical reasons or to prevent corrosion, to cover the second contact arrangement with a cap or sleeve.

Preferably, therefore, there are two separate power circuits on the contact assemblies to power the lock via the second contact assembly to be able to supply and open when the power supply, eg. Via a battery, the first contact arrangement is not given. For example. when the battery is drained.

A number of codes are programmed or stored in the lock, in particular in the control unit or a memory associated therewith. One of these codes is marked as current code. If the user enters the current code into the lock by entering the input unit, the lock will close or open. One or more codes stored in the lock are stored as sequence codes to other codes in the lock. If the authorization to open the lock is to be transferred from an existing user to a new user, the new user will be notified of one of the subsequent codes. When the new user enters the sequence code into the lock, the sequence code becomes the current code. From this moment on, the new user can open the lock with the following code, which has now become the current code. The former user is no longer able to open the lock because the code known to him is no longer the current code. Alternatively, the user may also have forgotten his code, then he can be the administrator or another authorized person, the sequence code or the current code can be transmitted. Particularly preferably, the user can even look up his current code in an external database that is not connected to the lock.

The number of codes in the series of codes could be limited by the available memory in the lock. For security reasons, a code series should consist of at least 100 codes.

A code may include a number of symbols, such as various numbers and / or letters, images, graphic patterns, a barcode, 2D barcode, barcode, or other representations known to those skilled in the art. A code could also be a combination of lines painted, for example, on a touchpad, which may be a potential input device. A code may also be a graphical image that the user paints on an input device.

A lock according to the invention is operated with direct current, in particular with a voltage of 1.5 volts to 25 volts, preferably with 1.5 to 12 volts. Furthermore, it preferably has at least one DC limiter, in particular at least one corresponding transistor. Conveniently may also be a version that is to operate with alternating current.

According to the invention, the first and / or second contact arrangement are designed to allow a connection or contact of a battery (disposable batteries), a rechargeable battery or a DC power source, which in particular comprises a DC transformer. Particularly preferably, the second contact arrangement arranged on the front side and / or the first contact arrangement arranged on the rear side are designed such that they permit the connection or contacting of ANSI standardized construction sizes of batteries or accumulators, as exemplified below: AAA, AA , C, D, 1604DPP3, button cells, A, AAAA, F, N, duplex, J, PP7, PP9, 908D, 1181A or an adapter for receiving ANSI standardized sizes and / or arrangements thereof, particularly preferably the inventive lock with a 9 volt block battery or a 9 volt block accumulator operated. In particular, the contact arrangement provided on the rear side has a wireless clip-in battery compartment.

The first contact arrangement has two, four, six, eight or ten contact areas, preferably contact points for the connection of 1, 2, 3, 4 or 5 batteries or accumulators. The second contact arrangement provided on the front side preferably has two contact points for connecting the poles of the batteries or the accumulators.

Additionally or alternatively to the aforementioned features, the lock, in particular the second contact arrangement, an overload protection, PCB overload protection and / or reverse polarity protection, in particular up to 400 volts fused, preferably a self-resetting, more preferably a self-resetting up to 400 volts secured overload protection. More preferably, the lock on a reverse polarity protection, in particular as diode cross-circuit, rectifier and / or rectifier rectifier circuit, more preferably protected to 400 volts. According to the invention, the reverse polarity protection is associated with the second contact arrangement, which is preferably arranged on the front side of the lock. The second contact arrangement according to the invention has two metallic, electrical current conductive contact points to which the poles, for example, a 9V block battery can be applied to open the lock when the battery in the battery compartment of the first contact arrangement is empty.

The reverse polarity protection allows the correct current flow of the DC current regardless of how the +/- poles of the battery are applied to the two poles of the second contact arrangement.

More preferably, the lock comprises a photocell, a solar cell or a solar foil to allow charging of a rechargeable battery, in particular the photocell, solar cell or solar foil is arranged on the front of the lock or associated with the cabinet or locking system in which the lock is installed , The accumulator is preferably connected to the first contact arrangement.

Furthermore, it is preferred if the circuit boards or circuit boards, in particular with all building units and groups, in particular the control unit, the input unit and / or the closing mechanism, are provided with a protective layer or gel containing Si-O groups, in particular a silicate gel. This protective layer or gel is based on a silica gel, an organofunctional silane or siloxane-containing composition formed by curing them. The protective layer on printed circuit boards, boards, is designed to protect against moisture ingress, to protect against temperature and protection against replication, as the printed circuit board is destroyed when attempting to remove the protective layer.

In addition or as an alternative to the aforementioned features, the lock has a transparent display, plasma or LED display, which displays the entered PIN encrypted or readable and / or displays the state of charge of the battery or a rechargeable battery. In addition, the aforementioned display can be addressed by the control unit to indicate from whom, on which day and possibly at what time an opening or closing took place. Preferably, it gives this information only after entering a code and / or immediately after entering the code known to be read by eg. A deliverer or scanned can. The user, master etc. can retrieve the information at a later time also by entering his current code, sequence codes or master codes. The information can also be encrypted, visible to everyone and decrypted by entering a code or program.

Additionally or alternatively to the aforementioned features, the lock has a loudspeaker for outputting a beep tone for confirming the correct or incorrect input of a PIN or the loudspeaker reproduces the aforementioned information.

In addition or as an alternative to the aforementioned features, the lock has a memory, in particular the control unit has a memory which stores the time, date and the code or PIN inputs, ie the user accesses to the lock. The stored data is particularly important when the lock is operated in a multi-user environment and the openings and closures are to be reconstructed by the user.

Additionally or alternatively, the at least one code series of a control unit, preferably all code series, logically linked to a code series, in particular each with an identical code series in an external database, without any communication between the control unit and the database, in particular no wired connection or radio link. This database knows at any time due to an algorithm the current code and the sequence code. This is possible by sending the codes to the users only from the database.

Furthermore, the lock can be operated at any time via n-arbitrarily stored codes parallel to the current code. It is possible to store any code series for user groups. In order to enable a reprogramming of the stored code series in the lock software is provided for programming on an external computer. For transferring the new or changed code series to the memory of the castle, the computer can be connected by radio or by means of a cable for the transfer of new code lists with the lock. Preferably, the lock also has an integrated memory chip on which the user data, such as date of opening, use of what codes and time, users (master, service or customer), etc. are stored. Furthermore, it is preferred if the software permits a flexible setting option for the situation of incorrect entries. Thus, a maximum individuality of the use of the castle is possible. For example, after 1 to n, preferably after about 3 to n-any incorrect entries of a code, a total blockage, which is preferably displayed on the LED display, for 1 to n-any minutes (both values freely selectable) possible. For example, the lockout duration may double after 3 incorrect entries, starting with 1 to 5 minutes for each additional incorrect entry.

Furthermore, it is particularly preferred to have available any master codes which always allow the lock to be opened independently of the currently valid user code or codes.

In order to increase the security against burglary of the locks, the connection of the outside of the front side of the lock with input unit, etc. to the inner lock part includes over-twist-proof, unattached sleeve nuts Inner thread. To increase the certainty that the lock can not be dismounted from the outside, the sleeve nuts or only flat heads of the sleeve nuts on the front side of the lock are provided on the inside of the front side.

An input unit may also be a keyboard for entering numbers or letters. A possible input unit may also be a rotary knob, through which the characters of a code can be entered by certain rotations or adjusting positions of the rotary knob. Alternatively, the input unit may comprise a reading device or a reading unit, in particular for reading a code. This reading device can be a scanner which is additionally or alternatively present to the rotary knob, a keyboard or another input unit known to the person skilled in the art. The reading unit can read in codes which correspond to a current code or a sequence code or are assigned to a current code or sequence code. A preferred keyboard has only 10 digits. In order to activate or operate the lock, the opening (= flow can flow) and release command (= opening) are preferably triggered by 2 fixed digits (currently "0" and "9"), so that the method according to the invention also includes the steps input of the opening command, in particular input of a single-digit code, and / or input tripping command, in particular input of a single-digit code. Alternatively, the keyboard can also be equipped with 10 digits and extra keys for additional commands, such as opening and closing. Further, the keyboard may also include letters and / or numbers and / or special characters and / or symbols. The keys of the keyboard (push buttons) are preferably made of metal, optionally also of plastic. A particularly preferred input unit comprises a reading unit, in particular for reading in barcodes, barcodes, 2D barcodes, fingerprints or other graphic patterns which correspond to a current code, a sequence code or are assigned to a current code or sequence code.

The user interface of the lock can be made of either metal or plastic. On the outside of the lock, for example, a hinged or swiveling metal cover is provided on the front side of the lock.

The closing mechanism may comprise a bolt, a hook, a hook bolt or a bolt or a plurality of these, which are movable when the closing mechanism allows an opening of the lock or the closing mechanism opens the lock. They are immobile if the closing mechanism does not allow this. For example, because no code or wrong code is entered. Alternatively or additionally, the closing mechanism can operate electromagnetically, hydraulically or by means of a vacuum. A hook bolt allows a lock-up between the door and the body of a lock built into a carcass or cabinet. The locking is conveniently carried out with a bolt which is moved by an electric motor, alternatively, an electromagnet can be used. Preferably, the opening of the closing mechanism is carried out manually after the closing mechanism allows the opening, for example by means of a rotary knob or slider or other familiar to the expert manual means.

In the context of the invention, it is also preferred if the lock in a door or a cabinet with cavity and door, especially in a door of a cabinet, preferably a metal door, if necessary, a metal cabinet, in particular steel, preferably stainless steel, is installed, preferably in a metal door and / or a metal cabinet with a material thickness of the sheet metal of about 0.5 to 3.0 millimeters. The subject of the invention is also a body with cavity and with door and lock, according to the invention a lockable cabinet with door and a lock according to the invention, as described above and below.

The size of the lock is preferably very compact in order to be able to be installed in small lockers with small doors, as they are placed in schools or sports facilities. Thus, the lock according to the invention has the following dimensions on width x height x depth 150 mm x 15 mm x 30 mm, preferably the dimensions are smaller, by about 120 mm in width * 95mm in height and 23 mm in construction depth. The body of the lock is preferably made of a stable plastic, of metal, and preferably of zinc die-casting.

The control unit may be a microprocessor and a number of codes may be stored in the memory of the microprocessor.

In the context of an exemplary embodiment, the control unit causes the closure mechanism to open the lock or to open the lock when the sequence code is entered into the input unit. In this case, the user only needs to enter the sequence code once to activate the lock for the new current code and open it.

The time intervals when entering a code can be adjusted user-optimized, so that always the input of the code is detected, for example, a five-digit code.

In the context of an exemplary embodiment, a code series is a list and the sequence code of a code of the list is the next code in the list. As a result, no complex data structure in the control unit must be entered or programmed.

In the context of an exemplary embodiment, the list begins with a first code and ends with a last code and the sequence code of the last code is the first code. Preferably, the first current code is the first code in the list. When all the codes in the list have been used, the first code in the list becomes the current code for opening the lock. No maintenance is required, even if all the codes stored in the lock have been used up.

Likewise provided by the invention is a lock with and / or a method according to which up to n arbitrary code series (code series 1, 2, 3, 4.5 to n) are deposited, wherein at least one of the codes of the arbitrary code series as a In particular, one of the codes of a part or each of the arbitrary code series is set as a current code and one of the codes of a part or each of the codes is set to one of the codes of the arbitrary code series Any code series set as the sequence code of the current code. The control unit then allows the closure mechanism to open or open when one of the current codes is input to the input unit and the control unit sets the sequence code as the current code when the sequence code is input to the input unit.

According to a further preferred alternative or method, 1, 2, 3, 4, 5 can be stored in the memory unit and / or database up to any code lists for users and / or user groups. Preferably, a code list is deposited as a master code list, which is accessible only to the operator or tenant of the locks or locking system, for example. Another list is, for example, a service code list that is accessible to a service mechanic and, where appropriate, can only be activated with the consent of the current user. Overall, the special logic of the lock in combination with the maintenance reliability of the power source, a particularly easy operation of a lock system or locking system and thus reduces the maintenance and servicing costs. The lock according to the invention with a second contact arrangement on the front side of the lock, and preferably with reverse polarity protection, allows quasi an operation of a Schliessanlange alone on the users. Even if the battery surprisingly no longer supplies power, can the user without having to contact a maintenance service in a simple way by means of a brought battery even his castle open again with the code or a sequence code and replace the empty battery of the first contact arrangement with a charged battery.

If desired, the lock can additionally also have a mechanical lock that can be operated with a mechanical key. Conveniently, this is then a single key for the entire locking system.

Within the scope of an exemplary embodiment, it is possible for two or more codes of a code series to be sequence codes of a code. In this case, two different users could be provided with two different codes, and the first of the two users authorized to open the lock becomes the new sole user able to open the lock. The other of the two new users can no longer authorize to open the lock if the subsequent codes of the new current code are not the sequence codes of the former current code. This can be useful when the lock is part of a locking system comprising a plurality of locks, such as in a locker room. Users can then choose their own locker under the existing lockers.

As part of an exemplary embodiment, the control unit may set the sequence code as the current code when the current code is input to the input unit. This can be advantageous in the case of a lock of a shopping box. Shopping box is used synonymously with body with cavity and with door and lock, in particular lockable cabinet with lock according to the invention, preferably a variety of cabinets, lockers in a Schliessanlage. A shopping box is dimensioned so that all the usual products and products that can be delivered by a consumer or even a small company via a delivery service can be inserted.

A postman receives the current code and can open the shopping box (cabinet with cavity and door, especially cabinet) to insert a package in the shopping box. After he has closed the shopping box, he is not again able to reopen the shopping box. The owner of the shopping box can then open it with a master code or with the following code.

By combining this embodiment of the control unit in the lock with 1,2,3,4,5 to n different code series and 1,2,3,4,5 to n different master codes, which may each be assigned to the corresponding code series, Such a shopping box can also be used in multi-user environments, for example in apartment buildings. The respective code series are each assigned to an apartment. Depending on which of the code series (or synonymous code lists) of the opening service used by the delivery service, ie a current code comes, the shopping box after closing only with a sequence code or the master code from this code series can be opened. The code used by the delivery service was previously submitted by the user. For this purpose, a lock is preferably used, the control unit sets the sequence code as current code when the current code is entered into the input unit.

It would be expedient to provide the inventive lock in this exemplary embodiment optionally with an additional display on the outside, can be read from the, for which user, or for example for which apartment, a package has been inserted into the shopping box. Alternatively, the aforementioned display can display this information and can be controlled by the control unit as described.

It may be advantageous, depending on the size of the multi-user environment, to hold several shopping boxes with identical code rows. In any case, but would be less shopping boxes than users or apartments required, resulting in cost savings. At the same time, significantly less space is required to ensure access to shopping boxes for all users. For example, 30 apartments and thus up to 30 or more users, 10 shopping boxes could be kept, each of which responds to, for example, 3 to 30, preferably 3 to 9 code rows. In this way, the number of shopping boxes can be meaningfully minimized. Preferably, the shopping boxes are also color or otherwise marked to make the assignment to the respective code lines for the delivery service easily recognizable. Alternatively, the delivery service with the transmission of the current code (opening code) and the accessible shopping boxes (cabinets) are communicated to the delivery service.

In a further example application, users of the shopping boxes could, for example, when ordering online, authorize mail order companies or delivery services via an external database to in each case query a current code from the code series assigned to the user or his home. For example, by integrating with existing software systems from mail order companies and delivery services, this code could be automatically applied to a shipping label in plain text, barcode, barcode, or otherwise.

If the user is not present at the time of delivery, the delivery service is thereby enabled either to open the one or the other in the case of a multi-user environment with the code applied on the shipping label and to insert the package into the shopping box.

It is particularly preferred if the lock after entering a current code (opening code, delivery code) and possibly re-shooting the lock, i. after inserting the ordered goods by the delivery service and closing the box generates a confirmation code, in particular the confirmation code is displayed on a display. In another example application, the lock of the present invention could generate a unique verification code from the current code, date, and unique lock number using an algorithm programmed into the lock, and output it via the externally mounted display either in plain text or as a barcode or otherwise. This confirmation code could be recorded or scanned by the employee of the delivery service and serve as a delivery confirmation.

The invention also provides a method for opening a lock having at least one code string, one of the codes of the code series being set as the current code and one of the codes of the code series as a sequence code of the current code, the method comprising the following steps comprising: inputting an input code; Opening the lock if the input code matches the current code; and setting the sequence code as the current code when the input code corresponds to the sequence code, or setting the sequence code as the current code when the current code is input to the input unit. Particularly preferably, the method also includes that after entering a current code and opening the lock and optionally firing the lock a confirmation code is generated, in particular the confirmation code is displayed on a display. In this case, the sequence code is preferably set as the current code. The invention also provides a method in a lock according to one of claims 1 to 10.

In the context of an exemplary embodiment, at least two codes of the code series are set as current codes, the control unit causing the opening of the lock mechanism when one of the current codes is input to the input unit. In another exemplary embodiment, the control unit sets the sequence code of the current code as current code when one of the sequence codes is input to the input unit.

Each current code may have different sequence codes. This would be useful, for example, in a hotel where a multitude of users have access to their hotel rooms with individually different current codes and have access to a conference room that can be opened with any of these current codes.

Within the scope of an exemplary embodiment, it is possible that a code of a code series has no sequence code. This code can be the last code in a code series. After all the codes in the code series have been used, it is no longer possible to change the current code. A new codelist must be programmed or stored in the lock. This makes it possible to ensure that the same code can not be used twice for the same lock.

• Durch eine bauliche Trennung von Eingabe- und Schliessmechanismus des Schlosses kann der Einbau in beliebig starke Türen erfolgen. Vorzugsweise ist das Schloss von aussen spritzwassergeschützt, insbesondere wenn es nicht in trockenen Innenräumen aufgestellt oder eingebaut ist.

The following additional or alternative features of the lock have proven to be advantageous:

• By a structural separation of input and closing mechanism of the castle, the installation can be done in arbitrarily strong doors. Preferably, the lock is splash-proof from the outside, especially if it is not installed or installed in dry indoor areas.

Another aspect of the invention is a method of opening a lock having a code string of which a code is set as the current code and another code is set as the sequence code of the current code, the method comprising the steps of: input the code, opening the lock if the code entered is the current code; Set the sequence code as the current code if the input code is the sequence code.

Another aspect of the invention is a computer-readable medium in which a lock opening computer program is stored which, when executed by a microprocessor, is adapted to carry out the method.

A computer-readable medium could be a floppy disk, a hard disk, a USB storage device, a RAM, a ROM, and an EPROM. A computer-readable medium could also be a data communication network, for example the Internet, which allows the downloading of a program code.

Another aspect of the invention is a program element for opening the lock which, when executed by a microprocessor, is adapted to carry out this method.

Likewise claimed is a lock according to one or more of the preceding features or one of claims 1 to 5, wherein the front side (17) arranged second contact arrangement (11b) and / or arranged on the back (19) first contact arrangement (11a) are designed to connect or contact ANSI standard sizes of batteries or accumulators, comprising the designations AAA, AA, C, D, 1604DPP3, button cells, A, AAAA, F, N, Duplex, J, PP7, PP9, 908D, 1181A, adapters for accepting ANSI standardized sizes and / or arrangements of these, in particular a 9 volt block battery or a 9 volt block accumulator.

Particularly preferred is also a lock according to one or more of the preceding features or one of claims 1 to 6, wherein the printed circuit boards or boards, in particular with all structural units and groups, in particular the control unit, the input unit and / or the closing mechanism, with a Si-O group-containing protective layer or gel, in particular a silicate gel are provided.

Also preferred is a lock according to one or more of the preceding features or one of claims 1 to 7, characterized in that the code series (30) starts with a first code and ends with a last code, wherein the sequence code of the last code of the code series the first code is.

Likewise preferred is a lock according to one or more of the preceding features or one of claims 1 to 13, characterized in that at least two of the codes of a code series are set as current codes, wherein the control unit (22) causes the closing mechanism (14) is open or open when one of the current codes is input to the input unit (16), and optionally, the control unit (22) sets the sequence codes of the current codes as current codes when one of the sequence codes is input to the input unit (16).

Further preferred is a lock according to one or more of the preceding features or one of claims 1 to 14, characterized in that the lock after entering a current code (34, 34 ', 34 ") and optionally re-shooting the lock generated a confirmation code, in particular the confirmation code is displayed on a display.

Lock according to one or more of the preceding features or one of claims 1 to 15, characterized in that it is part of a door, a body with cavity and door, in particular a door of a cabinet, preferably a metal door of a metal cabinet, in particular of steel, preferred Stainless steel is, preferably with a material thickness of the sheet metal of about 0.5 to 3.0 millimeters.

The invention also provides a method according to one or more of the preceding features or claim 12, characterized in that after entering a current code (34, 34 ', 34 ") and opening the lock (10) and optionally shooting the lock (10 In particular, the method according to one or more of the preceding features or claim 12, comprising the step of: opening the lock, if the input code comprises the sequence code (36, 36 ', 36 ", 36 ⁿ ).

The invention is also the use of a lock with one or more of the above features or according to one of the claims in a door, a cabinet, a locker and / or a Schliessanlage.

These and other aspects of the invention will become clear and clarified by reference to the embodiments hereinafter referenced.

• Figur 1 zeigt ein Funktionsdiagramm des Schlosses
• Figur 2 zeigt eine Verkörperung einer Codereihe
• Figur 3 zeigt eine weitere Verkörperung einer Codereihe
• Figur 4 zeigt ein Ablaufdiagramm für die Nutzung des Schlosses gemäss Figur 1
• Figur 5 zeigt ein erfindungsgemässes Schloss mit zweiter Kontaktanordnung.

In the following, the embodiments of the present invention will be described with further details and references to the accompanying drawings. The drawings show:

• FIG. 1 shows a functional diagram of the lock
• FIG. 2 shows an embodiment of a code series
• FIG. 3 shows another embodiment of a code series
• FIG. 4 shows a flow chart for the use of the castle according to FIG. 1
• FIG. 5 shows a lock according to the invention with second contact arrangement.

FIG. 1 shows an embodiment of an electronic combination lock 10, which is installed in a door 12 as part of a cabinet or locking system 23. The lock can be part of a locking system, as it is in a locker room and the door can be the door of a locker. The lock 10 comprises a closing mechanism 14 of an input unit 16 and a control unit 22. The lock has a front side 17 and a rear side 19. On the back of the lock 10 or in the door, the entire mechanics or electronics of the castle is embedded as a compact unit. The input unit 16 includes a knob 18 which is mounted on the outside of the door 12 and protrudes therefrom. The knob 18 has a mark which can be set to the numbers 0 to 9, which are mounted around the knob 18 on the door 12, wherein by turning the knob 18, the numbers 0 to 9 can be entered.

The locking mechanism 14 includes a latch 20 that is movable when the latch 10 is opened or unlocked and that can be moved into a frame of the door 12 to prevent opening of the door 12 when the latch 10 is locked. When the latch 20 is movable, the knob 18 may also be used to mechanically move the latch 20 to open the latch 10.

The control unit 22 comprises an electronic chip with a microprocessor and a memory. In the memory, a code string consisting of 100 codes is stored. It is also possible that one or more master codes are stored in the control unit 22. With a master code, the lock 10 can be opened at any time. Preferably, the master code is identical for all locks 10 of the same locking system.

One of the codes of the code series in the memory of the control unit 22 is marked or set as the current code. When the current code is input to the input unit 16, the lock 10 opens.

FIG. 2 FIG. 12 shows an exemplary embodiment of a code series 30 that may be stored in the control unit 22. The code series 30 is a list consisting of 10 codes 32 with the first code "1235621" marked as the current code 34. The third code "3276142" is also marked as current code 34. The second code "532164" is the sequence code to the current code 34, as expressed by the predecessor-successor relationship 38. Likewise, the code "326142" is the sequence code of the second code "532164". In the simplest case For example, the code string 30 is a list, and the code following code is the next code in that list. It is possible that the code series 30 forms a ring of codes 32 by the predecessor-successor relationship 38. As can be seen in drawing 2, the last code "87143" has a sequence code which is the first code of the list.

FIG. 3 shows another embodiment of a code series 30 'that includes ten different codes. The current code 34 'has three sequence codes 36'. A code series similar to the one in FIG. 3 can be implemented by a list in which the three consecutive codes of a code are the next three codes on the list. Also, more codes than three, that is about five, or even just two codes can be sequence codes of a code. The last code "192231" of code series 30 has no sequence code.

The lock 10 may be reprogrammable. It may be that a service technician can change the code string stored in the lock or store a new code string in the lock. This can be done on site with the input unit 16, by means of an electronic interface of the lock or by means of a communication connection to a central locking system.

The code series which is stored in a lock or all codes which are stored in a lock of a locking system can also be stored in a database of the operator of the locking system. The database may also store the current code of each lock and the predecessor-successor relationships. Whenever a new user needs to be authorized for a lock, the operator of the database can request a sequence code for the corresponding lock from the database. In a simpler embodiment, no database is required, but the codes are listed in a table.

FIG. 4 FIG. 12 shows a flowchart of the program that may be executed on the microprocessor of the control unit 22.

In step S1, the control unit 22 waits for an input from the input unit 16. To input a number of the code, the user must turn the knob 18 to the corresponding number 0 to 9 located on the door and turn the knob for a particular one Time, for example a second, left in position. Thereafter, the knob may be rotated to the next number of the code. The length of the code can be set to a certain number of numbers. The control unit 22 may identify the end of the input of the code, if a certain number of numbers is reached or if no further numbers are entered for a certain time.

In step S2, the control unit 22 compares whether the code entered via the input unit 16 corresponds to the current code or one of the current codes. If this is the case, the control unit 22 moves to step S5 and causes the closing mechanism 14 to open the lock. Furthermore, the control unit 22 may set a sequence code as the current code in step S5.

If the inputted code is not the current code, the control unit 22 compares the inputted code with the sequence codes of the current code (s). If this is not the case, the program stops and starts again with step S1. If the inputted code corresponds to a sequence code, the control unit sets the sequence code as the new current code in step S4 and goes to step S5 to open the lock. In the case of a plurality of current codes, the control unit 22 sets the sequence codes of the current codes as the new current codes.

After step S5, the program ends and starts again at step S1.

Although the invention has been illustrated and described in detail by the drawings and the foregoing descriptions, such illustrations and descriptions are to be considered as illustrative or exemplary in nature and not restrictive. The invention is not limited to the exemplary embodiments herein. Other variants of said embodiments may be understood and practiced by persons skilled in the art from a study of the drawings, the descriptions, and the claims. In the claims, the term "consisting of" does not exclude other elements or steps, and the indefinite articles "a" or "an" do not exclude a plurality. A single microprocessor or controller could perform the functions of multiple elements as recited in the claims. The mere fact that certain things are mentioned in various dependent claims does not mean that a combination of these things could not be used to the advantage. References in the claims are not to be construed as limiting the scope.

FIG. 5 shows a variant of the lock 10 according to the invention. Instead of a rotary knob, the input unit 16 is a keyboard 18a and gff. a reading unit 23 is provided. The current code or a successor code can be entered into an input unit 16 via the keyboard 18a. Alternatively, the input of a code is possible by, for example, a cell phone that has a code, such as a barcode or 2D barcode indicated on its display, and by means of the reading unit, here scanner, 23 is read. Furthermore, a second contact arrangement with two electrically conductive contacts 11 b is provided on the front side of the lock. At this contact arrangement, the two poles are held, for example, a 9 volt battery or a rechargeable battery when the lock is to be opened, although the on the back of the door, in the first contact assembly 11 a in a wireless clip battery compartment, inserted battery no power delivers more. In this way, the lock 10 can also be easily opened to replace the battery of the first contact assembly 11 a against a charged. So that there is no damage to the components, the reverse polarity protection, a rectifier or a diode circuit or an overload protection is associated with the second contact arrangement, which directs the DC current with the correct polarity to the electrical components, such as control unit, storage unit, etc. Via the LED display 13, the entered code, the state of charge of the battery or the information "lock open", "lock closed" can be displayed.

LIST OF REFERENCE NUMBERS

10

lock

11a

first contact arrangement

11 b

second contact arrangement

12

door

13

LED indicators

14

closing mechanism

15

DC power source

15a

power supply

15b

Battery, accumulator

16

input unit

17

front

18

knob

18a

keyboard

19

back

20

bars

21

Part of a cabinet or locking system

22

control unit

23

Reading unit, scanner

30, 30 ', 30 ", 30n

codelists

34, 34 ', 34 ", 34n

current code

36, 36 ', 36 ", 36n

sequence code

Claims (15)

A lock (10) having a front side (17) and a back side (19) comprising: an input unit (16) for inputting a code; a control unit (22) having at least one code series (30, 30 ', 30 "), one of the codes of the code series being set as a current code (34, 34', 34") and one of the codes of the code series as a sequence code (36, 36 ', 36 ") of the current code (34, 34', 34") is set; and - A closing mechanism (14) for closing and opening the lock (10); in which the control unit (22) causes the closing mechanism (14) to be opened or opened when the current code (34, 34 ', 34 ") is input to the input unit (16) and a first contact arrangement (11a) for connecting a direct current source (15), which is arranged in particular on the rear side (19) of the lock, and possibly a second separate contact arrangement (11b) for connecting a direct current source (15), which in particular the front side (17) of the castle is arranged. Lock according to claim 1, characterized in that the control unit (22) sets the sequence code (36, 36 ', 36 ") as current code (34, 34', 34") when the sequence code (36, 36 ', 36 ") ) is input to the input unit (16). Lock according to claim 1, characterized in that the control unit (22) sets the sequence code (36, 36 ', 36 ") as current code (34, 34', 34") when the current code is input to the input unit (16) becomes. Lock according to one of claims 1 to 3, characterized in that it is operated at a voltage of 1.5 volts to 12 volts. Lock according to one of claims 1 to 4, characterized in that the first and / or second contact arrangement are designed for connection or for contacting a battery (disposable batteries), a rechargeable battery or
a DC power source, which in particular comprises a DC transformer. Lock according to one of claims 1 to 5, characterized in that the lock, in particular the second contact arrangement (11 b), an overload protection, PCB overload protection and / or reverse polarity protection, in particular up to 400 volts, preferably a self-resetting, more preferably a self-resetting up to 400 Volt, more preferably a reverse polarity protection, in particular as a diode cross-circuit, rectifier and / or rectified rectifier circuit. Lock according to one of claims 1 to 6, characterized in that the at least one code series (30, 30 ', 30 ", 30 ⁿ ) of a control unit (22), preferably all code lines, logically with a code series (30, 30', 30 ", 30 ⁿ ), in particular each with an identical code series, are linked in an external database without a communication between the control unit and the database, in particular no wired connection or radio connection. Lock according to one of claims 1 to 7, characterized in that the control unit (22) causes the closing mechanism (22) to open or to be opened when the sequence code (36, 36 ') is input to the input unit. A lock according to any one of claims 1 to 8, comprising any of a number of code strings (30, 30 ', 30 ", 30 ⁿ ), at least one of the codes of the arbitrary code series being a current code (34, 34', 34 ', 34 ⁿ ) is set and, if appropriate, one of the codes of the arbitrary code series is set as a sequence code (36, 36 ', 36 ", 36 ⁿ ) of the current code (34, 34', 34 ', 34 ⁿ ) setting one of the codes of a part or each of the arbitrary code series as a current code and, if necessary, setting one of the codes of a part or each of the arbitrary code series as a sequence code of the current code. Lock according to one of claims 1 to 9, characterized in that the input unit (16) has a reading unit (23), in particular for reading in barcodes, barcodes, 2D barcodes, fingerprints or other graphic patterns, the current code (34, 34 ', 34 ") correspond to a sequence code or are assigned to a current code or sequence code. Carcass with cavity and with door and lock according to one of claims 1 to 10. A method for opening a lock (10) having a code string (30, 30 ', 30 ", 30 ⁿ ), one of the codes of the code string being the current code (34, 34', 34", 34 ⁿ ) and one of the codes of the code series is set as a sequence code (36, 36 ', 36 ", 36 ⁿ ) of the current code (34, 34', 34", 34 ⁿ ), the method comprising the steps of: Input of an input code; Opening the lock (10) when the input code corresponds to the current code (34, 34 ', 34 ", 34 ⁿ ); and Setting the sequence code (36, 36 ', 36 ", 36 ⁿ ) as current code (34, 34', 34", 34 ⁿ ) when the input code corresponds to the sequence code (36, 36 ', 36 ", 36 ⁿ ), or setting the sequence code (36, 36 ', 36 ") as current code (34, 34', 34") when the current code is input to the input unit (16). A computer readable medium having stored thereon a computer program for opening a lock which, when executed by a microprocessor, is adapted to perform the methods of claim 12. A program element for opening a lock that, when executed by a microprocessor, is adapted to perform the methods of claim 12. Use of a lock according to one of claims 1 to 11 in a door, a cupboard, a locker and / or a locking system.

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