DE20320720U1 - lock cylinder - Google Patents

Abstract

Schlüsselbetätigbarer Lock cylinder (100), especially for Door locks, comprising at least one stationary cylinder housing (12) with at least one Cylinder core (14) mounted therein, containing at least one keyway (20, 22) for receiving a key with a key-beard, wherein the cylinder core (14) has a plurality, in particular at least three, Closing channels (24a, 26a, 28a, 30a, 32a; 24b, 26b, 28b, 30b, 32b) with one or more movably arranged one or more parts closing elements (36a, 38a, 40a, 42a, 44a, 36b, 38b, 40b, 42b, 44b), which by a key actuated in which one or more closing channels at least a closing element or at least one part (1a, 2a, 3a, 4a, 5a, 1b, 2b, 3b, 4b, 5b) a multi-part closing element with one or more magnets, in particular for position determination, and / or are provided with optical position sensors.

Description

The The present invention relates to a key-operated lock cylinder, comprising at least one stationary cylinder housing with at least one therein mounted cylinder core, containing at least one keyway for receiving a key with a key-beard, wherein the cylinder core has a plurality of closing channels with one or more movably arranged one- or multi-part closing elements, by a key actuated are included. Furthermore, the invention relates to a locking system, containing at least one locking cylinder according to the invention, as well as a locking system, containing at least one inventive locking system.

lock cylinder are in many commercial castles, be it apartment door locks or Car door locks, too Find. Despite the great variety on cylinder locks Even with sophisticated products often can not be absolutely reliable Burglar resistance can be achieved. Cylinder locks can be, for example with drawing tools by pulling out the lock cylinder or by drilling of the castle. When boring the lock cylinder The individual tumblers are completely drilled away, resulting in then the cylinder core to turn. Of Another can be done with a set of metal plates, with which the locking pin a lock in open position, a lock cylinder even without the matching key pressed and the lock with it be opened. With a so-called Zylinderknacker can the lock cylinder break out of the castle. Furthermore, with the help of so-called Hand picks holding a key Simulate all tumblers of a lock cylinder gradually in their final position to be moved. Likewise come electromechanical Picks to use that over a special Perkusionstechnik the closing elements in the open position move. About that In addition, it succeeds again and again, by purely trying one Variety of keys with different profiles, leading to a lock cylinder matching key to find. Furthermore, it is possible with suitable tools, a to replace the complete cylinder core with one for the one matching key.

to Theft or burglary protection is the WO98 / 20221 a locking device with a cylinder core and a cylinder housing in front, where a permanent magnet arranged on the circumference of the cylinder core and a corresponding sensor in the cylinder housing are. about the use of different permanent magnets and / or over their different orientation in the cylinder core can be varied magnetic codes generate a manipulation of the cylinder core or breaking the Castle should prevent. The disadvantage of this is that already in the manufacture of the magnetic code is set and that the Magnetic code recognition, e.g. while further assembly, transport or installation of the lock by slight changes the predetermined rotational position of the permanent magnet can be lost. The locking devices described in WO98 / 20221 are intended to be electronic Immobilizer for Motor vehicles are used.

The WO98 / 19897 itself with a closing device similar to the WO98 / 20221, in which mounted by means of in the axial zones of the cylinder core Permanent magnets a coding of the output rotational position as well to succeed from different working positions.

Of the US 5,890,384 discloses a door lock system for a car door lock equipped with a position sensor system based on Hall sensors. With this closure system, the rotation of a lock cylinder can be monitored and the exact rotational position of the key in the cylinder can be detected.

The EP 0 525 730 A1 describes a spring-held, magnetically designed closure flap, which is arranged in front of a key inlet and which, depending on the position, is capable of activating a reed contact. Although this device can be used to detect the key position without external power supply, the monitoring function is limited to determining whether the key is in or out of the lock cylinder.

According to the EP 0 105 139 A2 It is possible, via a permanent magnet integrated in the key handle, which interacts with a mounted in the immediate vicinity of the lock cylinder magnetic sensor to perform an activation or unlocking of a car door lock.

From the EP 0 462 339 A1 shows a key-operated lock cylinder, which can be operated only with such a key having along its beard over spaced magnetic areas that can interact with present in the cylinder housing movable magnet, provided they are in the correct position. This device is very expensive both in terms of the construction of the lock cylinder as well as the key. In addition, conventional keys can not be used.

Finally, in the DE 296 04 127 U1 a cylinder lock described consisting of several ren closing channels with movably arranged therein, actuated by a key locking pin. In at least one of the closing channels, a locking pin is provided with means for generating an electrical reference voltage, for example zener diodes, which are electrically conductively connected to an elastic element, for example a spring. The voltage change between the lock pin and the spring is monitored to determine, for example, whether it is attempting to break or ream the lock. For this device, it is necessary to use reliable and permanently isolated components in order to prevent a short circuit and to ensure a safe operation of the lock.

It would be therefore desirable, on locking systems To fall back on to be able to which are not subject to the disadvantages of the prior art and at the same time a reliable Theft or burglary protection offer.

Of the present invention therefore an object of the invention Burglary and theft protective closing device available to make a unique key coding possible, even at a time after the installation of the lock cylinder in a door lock, which can be easily integrated into a locking system and the also when using conventional Key one höchtsmöglichen Burglary protection ensured and further reliable manipulation of the lock cylinder and immediately for example by triggering an alarm.

These The object is achieved by a key-operated one Locking cylinder, in particular for door locks, comprising at least one stationary cylinder housing with at least one therein mounted cylinder core, containing at least one keyway for receiving a key with a key-beard, wherein the cylinder core a plurality, in particular at least three, closing channels with a or a plurality of one or more parts movably arranged therein Closing elements, by a key are operable comprises, wherein in one or more closing channels at least one closing element or at least part of a multi-part closure element with one or more magnets, in particular for determining the position, and / or are provided with optical position sensors. The lock cylinder according to the invention is for the use in doors, e.g. apartment doors or car doors, as suitable as for the closing from, for example, cabinets, Drawers, safes or the like. The basic design principle of lock cylinders is known in the art. The cylinder core is preferably rotatable stored, so with a matching key about turning the cylinder core in the cylinder housing unlocking possible is. In an advantageous embodiment, in particular when magnetically sensitive Sensors are used are the cylinder housing and / or the cylinder core not made of a magnetic or magnetizable material. The closing element, a single component of a closure element or a part thereof can in one embodiment be carried out magnetically or magnetizable. According to one preferred embodiment of the invention, the lock cylinder from several closing channels with movably arranged two-part or multi-part closing elements, by a key actuated are, wherein in one or more closing channels, the closing elements are provided with magnets for position determination.

According to one advantageous embodiment, the lock cylinder has at least a first magneto-sensitive sensor that detects the change in the magnetic field strength of a changing his position, detected with a magnet closure element and / or at least one second magneto-sensitive sensor that changes the direction a magnetic field detected, and / or at least one optical Sensor that changes the position detected at least one optical position sensor. According to one further appropriate design The invention is already the first magneto-sensitive sensor as well able to change the direction to detect a magnetic field. The detection of the change of direction Of course, a magnetic field also works independently of whether the magnet or the sensor changes its relative position.

The magnetic sensors may be, for example, digital unipolar or bipolar switches or analog magnetic field sensors which provide digital or analog signals as a function of the magnetic field. According to one embodiment it can be provided that the first magneto-sensitive sensor is a Hall sensor and the second magneto-sensitive sensor is an AMR (anisotropic magnetoresistance) sensor. Hall sensors are known in the art as very sensitive detectors for the change of the magnetic field strength. Like the Hall sensors, AMR sensors are also commercially available, for example under the designations HMC 1501 and HMC1512 from Honeywell (see also http://www.magneticsensors.com). With the aid of AMR sensors, the angle of the field line course of a magnetic field at a location as well as its change can be determined exactly. For this purpose, it is usually sufficient if two AMR sensors are arranged at a certain angle to one another, so that it is not absolutely necessary to provide each closing channel with an AMR sensor. Because of the AMR sensors, it is possible to have a magnetic field aspect rum or to include part of it in the sense of a 3D detection, so that a comparison with previously recorded or stored magnetic field spectra can be made. For this purpose, it is usually sufficient to subject the data set obtained via the AMR sensor (s) to a Fourier transformation.

The closing elements of the lock cylinder according to the invention are two or more parts, being a part of a closing element is preferably designed magnetically or magnetizable. The individual components of a closing element do not necessarily have be connected to each other movable, since they are guided in a closing channel. Preferably, not the outermost, farthest from the bottom of the closing channel remote part of Closing element magnetic or magnetizable configured, but the following or one or more of the following ingredients. Compared to conventional closing elements are these or individual or all Components thereof by other, in particular magnetic or optical closure elements or closing element components replaced. Here are regularly the with the key bit immediately interactive closing element components unchanged left, i. not with a magnetic or optical position sensor equipped while the or at least one of the subsequent closure element components, i.e. those located lower in the closing channel, e.g. depending on the version the (evaluation) electronics, changes have and are designed, for example, magnetic or as a bar code.

Of the locking cylinder according to the invention makes preferably the influence of a, in particular inhomogeneous, Use magnetic field that changes its position, at least temporarily.

A expedient embodiment a lock cylinder provides that the first and / or second magnetically sensitive sensor in or on a closing channel, between adjacent closing channels, in or on the cylinder housing and / or disposed between the cylinder housing and the cylinder core is or are. This An the arrangement is particularly suitable for Hall sensors. These sensors are preferably in the vicinity of the magnetic or magnetizable Part of a closing element arranged, to record their movement. The breadth of variation for each lock cylinder characteristic magnetic code can also be increased by that in the closing channels magnetic closing element components with different magnetic strength brings.

The used sensors can in principle be analog or digital optical position sensor, which depends on the location of the closing elements provide a corresponding signal. It is advantageous that the Characteristics and sensors differ from series to series can and from the outside is incomprehensible.

It has proved to be particularly advantageous when the first and / or the second magnetically sensitive sensor in the cylinder housing, preferably of its outside, embedded or integrated is or are. That way too for the lock cylinder according to the invention by default Use incoming geometries and dimensions that are used in known locks can be installed. For example, on the outside of a cylinder housing in Range of closing channels one Groove be provided, in which a sensor bar, containing several Hall sensors, preferably in the same number as the closing channels, or one, two or more AMR sensors is inserted.

there can be provided according to the invention that every closing channel, in particular each closing channel, containing a closing element, which is provided with a magnet, at least a first or second magnetically sensitive sensor, in particular a Hall sensor assigned is. Thus, you can the positions and movements of the closing elements of corresponding Sensors are sampled and e.g. from a specially programmed microprocessor be evaluated, the data in an electronic memory (EEprom) can put off.

Furthermore, a further development of the lock cylinder is characterized by a contact sensor, magnetically sensitive sensor and / or optical sensor in the region of the key stop in the keyway. The insertion of the key into a key channel is usually stopped by a stationary termination of this channel, so that an accurate positioning of the key in the channel readily succeeds. By also detecting the abutment of the wrench tip on this contact area, for example, a registration cycle can be set which starts when a first change is registered via the sensor which is the first lock channel, ie, the one closest to the lock channel opening, and which only ends when the sensor emits a signal at the key stop. Already on the registration of the time period between the insertion of the key and the contact on the key stop a first conclusion can be obtained whether the lock cylinder is processed or manipulated unauthorized. The insertion of the key into the lock cylinder can be detected in an expedient embodiment by moving the first closing element by means of a first and / or second magnetically sensitive sensor. Selbstver Of course, optical position sensors can also be used for this purpose.

suitably has the lock cylinder over at least three closing channels, where in particular each closing channel having an at least two-part closure element, wherein at least a part of these closing elements is magnetic or magnetizable and / or has optical position sensor.

there may be provided in a particularly preferred embodiment, that the cylinder core has at least five closing channels, the magnetic and / or optical position sensors are equipped.

A another embodiment of the lock cylinder is also characterized by the fact that two AMR sensors spaced from each other, in particular on the cylinder housing, are present. An AMR sensor can for example consist of one to four AMR elements. Suitable AMR elements are e.g. back to thin iron plates. Every magnetic-resistant Tile or AMR element is able to depend on its resistance from the angle between the magnetic moment M and the current flow to change. Especially Suitable AMR sensors combine four of the previously described ones AMR elements, preferably in a diamond-like configuration below Training a so-called Wheatstone bridge are connected together.

Of the Lock cylinder according to the invention has in a further embodiment also via at least one elastic Element in at least one closing channel, in particular in each Keyway.

there can be provided that the resilient element is a spring or a material with elastic properties, in particular a thermoplastic elastomer or a foamed plastic. Suitable springs, e.g. Metal springs, and resilient materials, e.g. Polyurethane foams are commercially available.

According to one Another aspect of the present invention provides that in one or more closing channels with multipart closing elements those parts that are not used for magnetic positioning are provided completely or partially represent optical position sensor. After that includes the present invention not only such lock cylinders, where the closing elements only equipped with optical and not with magnetic position encoders but also those where both are used simultaneously come.

there can be provided that in at least one closing channel magnetic and optical position sensors are provided for position determination.

According to one embodiment comes into consideration that the position sensor analog and / or digital Position locator.

in this connection can be provided that in analog position encoders no Reference must be made to the location of the magnetic and optical Position transmitter and position taker.

Further are also such lock cylinders includes, which already has an evaluation for analog and / or digital contain magnetic and / or optical measurements. It can be provided be that each signal output of the sensors individually directly with a specially programmed microprocessor is connected to the incoming Processed signals. The transmitter can, for example analogue or digitally supplied values of the sensors of the series Evaluate according to their sequence of motion and save. It can be provided that the transmitter comprises timers, which make it possible various manipulation possibilities to recognize. Of course you can the transmitter also in conjunction with another, outside of the lock cylinder lying sensors such as motion detectors, reed contacts, light barrier, Retro-reflective sensor, fulfill further alarm and protection functions.

The The object underlying the invention is further achieved by a locking system comprising at least one lock cylinder according to the invention and at least one evaluation unit in operative connection with at least a first and / or second magneto-sensitive sensor and / or optical Position taker. Suitable optical position sensors or sensors are known in the art and can for example, based on a barcode or color recognition is made.

In an advantageous embodiment, the evaluation unit has at least one signal processor, an identification unit, a memory unit, an analog / digital converter, a communication unit and / or a power supply. About the communication unit, the recorded and possibly also already evaluated data can be forwarded to a central processing unit. This can be done via a cable connection or by radio. A suitable radio unit accordingly has at least one transmission function, optionally also a Receiving part, and preferably operates in the GSM band. The evaluation unit can for example be present on a circuit board and be attached or attachable to the lock cylinder or close to the lock cylinder. The magnetically sensitive sensors as well as the optical position sensors are preferably connected by cable connection to the evaluation unit. Of particular importance is the signal processor, in which the magnetic and / or optical characteristics of the master or standard key are read and the adjustment with the values that are recorded when inserting a key in the key channel, so the actual evaluation makes. The individual aforementioned units can be present separately or combined on a microprocessor.

The The object underlying the invention is further achieved by a locking system, comprising at least one locking system according to the invention and / or at least a lock cylinder according to the invention and at least one central unit, wireless or by means of cables is in operative connection with the / the evaluation unit (s).

there can in one embodiment be provided that the locking system at least one display unit, a keyboard, a programming unit, a connection to a Alarm unit, an alarm unit, a modem, an interface to a computer, a telephone dialer and / or an alarm system circuit includes.

With a locking system, containing the central unit, can be a variety of evaluation and thus manage a plurality of lock cylinders, i. monitor and register and save the recorded data. Of course it is it also possible other sensors, e.g. Motion detector, directly or via the Evaluation unit or the locking system according to the invention to the locking system to pair. The central unit is preferably in the form of a or more than one microprocessor. Another advantage is that for the Case that a key for one Loss lock cylinder not every single locking cylinder of the locking system has come but at most the one to whom the key is lost has come. Therefor is regular only required a new key with a changed one Key (beard) geometry is imported as a new query standard and deposited. This query standard can be used both in the evaluation unit and in the central unit be deposited. Each evaluation unit is preferably via the Uniquely identify the central unit. In the same way can be every key or its query standard clearly a specific lock cylinder or assign an evaluation, so that not only a reliable monitoring becomes possible but also a unique user ID are made can. About that In addition, the locking system according to the invention allows the advantage of the status a lock cylinder, preferably password protected, via internet or telephone, preferably via the e.g. provided with a suitable interface, central processing unit, e.g. for the Case that a lock has not been locked by mistake, catch up or instruct the lock.

According to one Another aspect of the invention is a door with a front and a Back, comprising at least one lock cylinder according to the invention, provided at least one first motion sensor, at least one second Motion sensor, at least a third and / or at least one fourth motion sensor.

It can be provided that the first motion sensor on at least one side of the door at a certain first height, in particular above the lock cylinder, is present and relative movements on the door to and from the door away from objects detected at the height or above the Height of the first motion sensor are that the second motion sensor is present on the same side as the first motion sensor, in particular at a second height, which is below the first height, and detects movements of objects that are below the height of the first motion sensor to the door or move away from the door and / or that the third and / or the fourth motion sensor detects or detects a movement of the door. In this way it can be determined, for example, whether a child or an adult is approaching the door. Depending on this information, the lock cylinder can then be released, not released and / or an unauthorized operation can be reported. With the help of third and fourth motion sensors, it is also possible to check whether the door is opened or closed after unlocking or locking the lock cylinder. For this purpose, it is often sufficient if a signal transmitter or a signal receiver, for example a magnet and a reed contact or a radiation source and a retro-reflective sensor, at the height of these motion sensors, is provided in or on the door frame. This additional sensor technology supports the locking cylinder according to the invention in a very effective manner. The first and second motion detectors preferably have a suitable construction of lenses, prisms and / or reflectors to prevent blasting below or above a certain height. Preferably, the first and second motion sensors are implemented as infrared sensors, which are connected via a transmitter and a receiving unit. It has proven particularly effective to use a first and / or second motion sensor for the upper or lower area with a reed contact, which interacts with a magnet, for door monitoring. Already with this arrangement can be determined on the order of activation of first and / or second motion sensors and third and / or fourth motion sensors, whether a door is opened from the inside or from the outside. In this case, the reed contact is preferably arranged in the region of the door lock and the associated magnet in the region of the door frame.

• a) Auswählen eines erfindungsgemäßen Schließzylinders und eines Schlüssels mit einem Schlüsselbart, der geeignet ist, den Schließzylinder mechanisch zu ent- bzw. verriegeln,
• b) Einführen des Schlüssels in den Schlüsselkanal des Schließzylinders,
• c) Registrieren der magnetischen und/oder optischen Signale, die mit der Lageveränderung der Schließelemente in den Schließkanälen beim Einführen des Schlüssels in den Schlüsselkanal einhergehen, vorzugsweise bis zum vollständigen Einstecken des Schlüssels, insbesondere bis zum Anschlag der Schlüsselspitze an eine Kontaktfläche,
• d) Weiterleiten und/oder Speichern der gemäß Schritt c) registrierten Signale zu bzw. in einer Auswerteeinheit,
• e) gegebenenfalls Transformieren der Signale,
• f) gegebenenfalls Versehen der gespeicherten Signale mit Toleranzwerten, und
• g) Abspeichern der, gegebenenfalls mit Toleranzwerten versehenen, Signale oder der transformierten Signale als Abfragestandard.

For securing or coding a lock cylinder according to the invention, according to one embodiment, a method comprising the following steps can be used:

• a) selecting a lock cylinder according to the invention and a key with a key bit, which is suitable for mechanically locking or unlocking the lock cylinder,
• b) inserting the key into the keyway of the lock cylinder,
• c) registering the magnetic and / or optical signals associated with the change in position of the closing elements in the closing channels upon insertion of the key in the key channel, preferably until the complete insertion of the key, in particular until the attack of the key tip to a contact surface,
• d) forwarding and / or storing the signals registered according to step c) to or in an evaluation unit,
• e) optionally transforming the signals,
• f) optionally providing the stored signals with tolerance values, and
• g) storing the signals, optionally provided with tolerance values, or the transformed signals as a query standard.

In an embodiment can be during insertion a key about the Hall sensors tapped at every single closing channel time course the magnetic field strength registered and in the evaluation unit, provided with a tolerance range, be deposited. The information of the Hall sensors correspond essentially the exact image of the key encoding. About the Hall sensors can do about it In addition, the exact movement of the through the key bit caused movement of the individual closing elements and, where appropriate, a part of the standard of interrogation form. Furthermore, with the help of AMR sensors by a the introduction of the key recorded characteristic magnetic field spectrum and recorded be deposited. The coding with optical signals or the Creating an optical query standard happens in appropriate Wise.

• a) Registrieren und Speichern der beim Einführen eines Schlüssels in den Schlüsselkanal des Schließzylinders erzeugten magnetischen und/oder optischen Signale in einer Auswerteeinheit,
• b) Abgleich der nach Schritt a) ermittelten Signale oder von transformierten Signalen mit einem zuvor, insbesondere gemäß dem vorhergehend geschilderten erfindungsgemäßen Verfahren, ermittelten Abfragestandard,
• c) Feststellung, ob die nach Schritt a) ermittelten Signale oder ob die transformierten Signale innerhalb oder außerhalb des Abfragestandards liegen,
• d) Freigabe des Schließzylinders, wenn die Feststellung nach Schritt c) dazu führt, dass die Signale innerhalb des Abfragestandards liegen und Nicht-Freigabe und/oder Alarmierung, wenn die Signale außerhalb des Abfragestandards liegen.

According to a further aspect of the invention, a method is provided for determining access control via a lock cylinder according to the invention, comprising the following steps:

• a) registering and storing the magnetic and / or optical signals generated during insertion of a key into the key channel of the lock cylinder in an evaluation unit,
• b) matching the signals determined according to step a) or of transformed signals with a previously determined query standard, in particular according to the previously described inventive method,
• c) determining whether the signals obtained after step a) or whether the transformed signals are within or outside the query standard,
• d) releasing the lock cylinder if the determination after step c) results in the signals being within the interrogation standard and non-enabling and / or alerting if the signals are outside of the interrogation standard.

The evaluation of the data determined via the magnetic and / or optical sensors can be carried out, for example, as soon as the key has reached its mechanical end point in the key channel during insertion. Likewise, it is possible for the registered data to be matched simultaneously with the query standard. As a rule, a period of 100 msec after reaching the stop location is already sufficient to perform a data comparison and to decide on release or blocking or alarm, it has proven to be useful to first register the stop signal and then carry out the evaluation , However, it has also proved to be advantageous if at least the time window is interrogated, which is required between the triggering of the first signal when inserting the key and reaching the attachment point. In this way, unauthorized manipulations of the lock cylinder can be detected promptly. For example, a common time window may include a period of 10 seconds. Consequently, in the method according to the invention, it is used that the detected movement sequences can only be exactly reproduced by the key matching the lock cylinder. The programming is done as previously described by putting the processor into a learning phase and once plugging and unplugging the key associated with the lock cylinder. Of course, the programming of locking systems is possible in the same way. Here, keys can be programmed in any number in the processor. The special programming compares at each When pressing the lock, the values supplied by the sensors are compared with the stored data. If the supplied sensor data do not agree with the stored data, this is evaluated by the microprocessor as a break-in attempt and an alarm is triggered. Attempting to manipulate the lock as explained in the opening paragraph triggers an alarm. When pulling or cracking the lock cylinder, the sensors are disconnected from the processor. This regularly leads to immediate alarm. Similarly, when drilling the lock cylinder, the sensor of the first closing element is disturbed, then that of the second closing element, etc. If the individual locking elements fails, an unprogrammed voltage drop and an alarm is triggered. When opening by means of an e-pick, all closing elements are moved simultaneously, which also leads to an immediate alarm. This is to be equated with the attempt of opening by means of hand pick. Consequently, the processor is able to detect any kind of tampering.

Of the The present invention is based on the surprising finding that that is a reliable one Burglary protection for key-operated lock cylinders already achieved by that in the closing channels of cylinder cores Position transmitter in the form of magnets or optical marking elements incorporated as part of the closing elements are. It is possible, over one robust, insensitive to interference Sensor, which can also be brought spaced from the cylinder core and in a simple manner in operative connection with an evaluation and / or Central unit can be brought, any unauthorized manipulation of the lock cylinder immediately determine. With the lock cylinders according to the invention, it is also possible, a Coding only after the installation of the lock cylinder. Farther let the lock cylinder easily in a locking system integrate and enable about that In addition, the construction of a locking system, with a reliable monitoring without any time delay succeed. It can affect both a sensor that changes the magnetic field strength for each single closing channel detected using a linear Hall sensor, as well on such, which the entire magnetic field spectrum in the space or detects its orientation in space by using AMR sensors, resorted become.

The present closure device opens beyond that the advantage, with motion detectors and other position sensors to be able to be combined to get a combined alarm protection. Such alarms can be used both for Front doors, i.e. in the private sector, as well as for doors in commercial clear use.

Further Features of the invention will become apparent from the following description, in the embodiments the invention with reference to several schematic drawings in detail explained become. The show

1a a lock cylinder according to the invention with magnetic closing element components in cross-sectional view;

1b a locking cylinder according to the invention with closing element components, containing optical position sensor, in cross-sectional view;

2 according to the lock cylinder according to the invention 1 with a key present in the closing channel;

3a an inventive door security system in front view and

3b the door safety system according to 3a with an indicated effective range of the motion detectors.

1 shows a lock cylinder according to the invention 100 in a schematic cross-sectional view. The lock cylinder 100 includes a cylinder housing 12 and a cylinder core 14 , in turn, with a front side 16 and a back 18 is equipped, via each a key in the closing channels 20 respectively. 22 can be introduced. The cylinder core 14 is therefore suitable for unlocking or locking a lock from opposite sides, as this is regularly encountered in front doors or other building doors. The cylinder core 14 is with two sets of five closing channels each 24a . 26a . 28a . 30a and 32a such as 24b . 26b . 28b . 30b and 32b provided, which are each arranged substantially parallel to each other. Each closing channel is in its bottom area with a spring 34 equipped, which each have two-piece closing elements 36a . 38a . 40a . 42a and 44a respectively. 36b . 38b . 40b . 42b and 44b connect. These two-part closing elements consist of upper sections 1 . 2 . 3 . 4 and 5 and underlying, acting as a position encoder sections 1a . 2a . 3a . 4a and 5a together. Each closing channel is a sensor unit approximately at the height of acting as a position encoder sections of the closing elements 6a . 7a . 8a . 9a and 10a assigned. These sensor units can be located directly in the cylinder core 12 , between cylinder core 14 and cylinder housing 12 or on the cylinder housing 12 are located. Make the positional closure element components 1a to 5a Magnets, a change in the magnetic field via sensor units in the form of Hall sensors can be detected during movement of the same. Rest against the bottom of the positional closing element sections the spring is the closing elements, as long as no key in the keyway 20 respectively. 22 is introduced, against the top 46 pressed the closing channels.

Again 1b it can be seen, the magnetic closing element sections 1a to 5a by optical position sensor 1a to 5a , eg in the form of barcodes. In this embodiment, the sensor units are located 6a to 10a Of course, it is also possible to provide lock cylinder, in which one or more closing channels contain a magnetic closing element section whose position change is detectable via an associated magnetic sensor, and at the same time one or more closing channels, with the previously described optical position sensors and the corresponding sensor units are equipped. Furthermore, it is possible to provide individual closing channels without a magnetic closing element section or an optical position sensor or with both position encoder types. In this way, an almost unlimited range of variations of key encodings becomes available.

2 shows a lock cylinder 100 according to 1 with in the key channel 20 introduced key 50 (indicated by the dashed lines of the key beard). The key bit 52 of the key 50 has a total of five points 54a to 54e and five valleys 56a to 56e on. When inserting the key 50 in the key channel 20 Be over the first key 54a all closing elements 36a . 38a . 40a . 42a . 44a according to the extent of the first key-serration 54a against the spring force of the springs 34 depressed in the respective closing channel. The change in position in the respective closing channels 24a . 26a . 28a . 30a and 32a present magnetic closure element sections 1a to 5a is about the sensors 6a to 10a detected. The key moves accordingly in the lock cylinder from the left over the top closing element section 1 to the right to the end point behind the closing element section 5 , The serrated key bit moves the upper closure member sections 1 to 5 in turn, first down and when snapping into the key notch back up a bit. Thus, it is detected that and to what extent the closing elements of the first four closing channels 24a . 26a . 28a and 30a through the second point 54b of the key bast in their position. In the same way, the influence of the further peaks 54c to 54e of the key bit detected. Furthermore, at the key stop 58 another sensor, such as a contact sensor, be provided which indicates the end of the insertion process. In particular, the upper closing element section becomes 1 moved in the present case five times down and up, the closing element section 2 four times, the closing element section 3 three times, the closing element section 4 twice and the closing element section 5 once. If there are more or fewer or different types of closing elements, ie those which do not have an optical or magnetic position indicator, the number of closing elements, the sensors and, if appropriate, the movement sequences increases or decreases accordingly. These different movements of the closing elements are received by the sensor, forwarded to the microprocessor, processed and stored in an electronic memory.

Will a key, as in 2 shown in the key channel 20 introduced, so a specific course of the magnetic field strength can be detected over each individual Hall sensor. The information obtained from all five Hall sensors can be combined to form a characteristic magnetic image of this key for each individual key design. Furthermore, the sequence of movements of the insertion of the key can be understood. If a key coding has been carried out in a first step by a single insertion of the key into the key channel, it is ensured that the lock cylinder can not be made to release the lock with any other key. Thus, at a very early point in time of the unlocking process, a release or blockade of the lock or an alarm triggering occurs without the mechanical lock-cylinder mechanism coming into effect. Furthermore, via an evaluation unit or a central unit, with the lock cylinder 100 be specified, within which period the key to the stop after the first activation of the first Hall sensor 10a is to set to set a time window that is available for an effective opening process.

The movement of a key within the key channel can be monitored particularly reliably if the information from the Hall sensors is read in with a cycle or cycle time of 500 kHz. Once a time window by activating the Hall sensor 10a can be used, even over the time course of the key insertion, ie the time required until the key reaches the contact stop, can be used to determine whether the lock cylinder is manipulated with a tool other than the designated key , In this way it can be prevented that the required setting, eg by means of a hand pick, is gradually found for each individual closing channel.

suitable Time windows extend over one Period of 0.1 to 10 sec, preferably from 0.1 to 2 sec. Once within the activated time window the required key of the sensor units is not recognized, z. B. an alarm system to be activated.

Of the Matching with a given magnetic key coding can z. B. simultaneously during insertion of the key be made. Furthermore, it is possible after completion of the insertion process to compare the detected data with a given set of data, before the mechanical unlocking process can be started. Reach for this usually already 100 ms after touching the contact stop with the key tip out.

According to one another embodiment also a so-called AMR sensor can be used. Here are in a sensor unit 2 by 90 ° to each other staggered 4-pin resistance bridges, For example, so-called Wheatstone bridges before. Unlike the Hall sensors, the magnetic field strength or their changes detect, with the AMR sensors, the direction or change in direction a magnetic field determined. This is a regular one Magnetic field spectrum recorded. Also with this sensor so-called magnetic fingerprints for each specific key recorded and with each re-insertion into the lock cylinder be queried. The use of AMR sensors has the advantage that already two sensor units are sufficient to make a magnetic Encoding to detect that this is a greater distance to the magnetic Closing element components enable as with Hall sensors, which gives a greater latitude in the attachment yields, and that opposite Hall sensors on, for example, by a factor of 100, lesser Power consumption is required.

Furthermore, it is possible, the lock cylinder according to the invention with other sensor units, as in 3a shown to obtain access control and alarm protection tailored to specific needs. For example, a door lock 60 with a first motion detector 62 and a second motion detector 64 in about the middle of the height of a door, so be located approximately at the level of the door lock. Here come z. B. Infrared sensors in question. Like from the 3b can be seen, is the first motion detector 62 adjusted so that it does not emit radiation below a certain height. The second motion detector 64 on the other hand, which is disposed below the first motion detector, on the other hand, is set to transmit only signals below a certain height, which are below the mounting height of the first motion detector 62 lie. If both motion detectors are activated, it can be determined, for example, whether an adult person or a child is approaching the door. Depending on this information requested the door lock can be released or blocked. Furthermore, another motion sensor, for. B. a magnet 66 , be mounted in the door frame, eg at the height of the door lock and with a present in the door sensor 68 , eg a reed contact, correspond. With the sensor 68 It can be determined whether or when after a Unlocking the door is opened. Furthermore, for backup also additionally or alternatively elsewhere reed contacts 70 . 72 and / or retro-reflective sensors and magnets 74 be provided.

Become the motion detector 62 and the motion detector 64 activated at the same time, this indicates that an adult is approaching the door, whereupon the lock cylinder can either be switched to use or to alarm.

The in the foregoing description, claims and drawings disclosed features of the invention can both individually and also in any combination for the realization of the invention in respective embodiments be essential.

1

upper Closing element section

1a

part a closing element

2

upper Closing element section

2a

part a closing element

3

upper Closing element section

3a

part a closing element

4

upper Closing element section

4a

part a closing element

5

upper Closing element section

5a

part a closing element

6a, 6b

sensor unit

7a, 7b

sensor unit

8a, 8b

sensor unit

9a 9b

sensor unit

10a, 10b

sensor unit

12

cylinder housing

14

cylinder core

16

front of the lock cylinder

18

back of the lock cylinder

20

keyway

22

keyway

24a, 24b

keyway

26a, 26b

keyway

28a, 28b

keyway

30a, 30b

keyway

32a, 32b

keyway

34

feather

36a, 36b

closing element

38a, 38b

closing element

40a, 40b

closing element

42a, 42b

closing element

44a, 44b

closing element

46

upper Edge of the closing channel

50

key

52

bit

54a, 54b,

key pips

54c, 54d, 54e

56a, 56b,

Schlüsseltal

56c, 56d, 56e

58

key stroke

60

Locks

62

first motion detector

64

second motion detector

66

magnet

68

Magnetic sensor, Reed contact

70

Reed contact

72

Reed contact

74

magnet

100

lock cylinder

Claims (23)

Key operated lock cylinder ( 100 ), in particular for door locks, comprising at least one stationary cylinder housing ( 12 ) with at least one cylinder core ( 14 ) containing at least one key channel ( 20 . 22 ) for receiving a key with a key bit, wherein the cylinder core ( 14 ) a plurality, in particular at least three, closing channels ( 24a . 26a . 28a . 30a . 32a ; 24b . 26b . 28b . 30b . 32b ) with egg nem or more movable therein arranged one or more parts closing elements ( 36a . 38a . 40a . 42a . 44a ; 36b . 38b . 40b . 42b . 44b ) operable by a key, wherein in one or more closing channels at least one closing element or at least one part ( 1a . 2a . 3a . 4a . 5a ; 1b . 2 B . 3b . 4b . 5b ) of a multi-part closing element with one or more magnets, in particular for determining the position, and / or are provided with optical position sensors. Lock cylinder ( 100 ) according to claim 1, characterized by at least one first magnetically sensitive sensor ( 6a . 7a . 8a . 9a . 10a ; 6b . 7b . 8b . 9b . 10b ), the change of the magnetic field strength of a position-changing, provided with a magnet closing element ( 36a . 38a . 40a . 42a . 44a ; 36b . 38b . 40b . 42b . 44b ) and / or at least one second magnetically sensitive sensor, which detects the change in direction of a magnetic field, and / or at least one optical sensor, which detects the change in position of at least one optical position sensor. Lock cylinder ( 100 ) according to claim 2, characterized in that the first magneto-sensitive sensor is a Hall sensor or the second magneto-sensitive sensor is an AMR sensor. Lock cylinder ( 100 ) according to claim 2 or 3, characterized in that the first and / or second magnetically sensitive sensor ( 6a . 7a . 8a . 9a . 10a ; 6b . 7b . 8b . 9b . 10b ) in or on a closing channel ( 24a . 26a . 28a . 30a . 32a ; 24b . 26b . 28b . 30b . 32b ), is disposed between adjacent closing channels, in or on the cylinder housing and / or between the cylinder housing and the cylinder core or are. Lock cylinder ( 100 ) according to one of claims 2 to 4, characterized in that the first and / or second magneto-sensitive sensor is embedded or integrated in the cylinder housing. Lock cylinder ( 100 ) according to one of claims 2 to 5, characterized in that each closing channel ( 24a . 26a . 28a . 30a . 32a ; 24b . 26b . 28b . 30b . 32b ), in particular each closing channel, containing a closing element ( 36a . 38a . 40a . 42a . 44a ; 36b . 38b . 40b . 42b . 44b ) with a magnet ( 1a . 2a . 3a . 4a . 5a ; 1b . 2 B . 3b . 4b . 5b ), at least one first or second magneto-sensitive sensor, in particular a Hall sensor, is assigned. lock cylinder according to one of the preceding claims, characterized by a Contact sensor, magnetically sensitive sensor and / or optical sensor on and / or in the area of the key stop in the key channel. Lock cylinder ( 100 ) according to one of the preceding claims, characterized in that at least three closing channels ( 24a . 26a . 28a . 30a . 32a ; 24b . 26b . 28b . 30b . 32b ), in particular each closing channel an at least two-part closing element ( 36a . 38a . 40a . 42a . 44a ; 36b . 38b . 40b . 42b . 44b ), wherein at least a part of these closing elements is magnetic or magnetizable and / or comprises an optical position sensor. Lock cylinder ( 100 ) according to one of the preceding claims, characterized in that the cylinder core has at least five closing channels. Lock cylinder ( 100 ) according to one of claims 2 to 9, characterized in that two AMR sensors spaced from each other, in particular on the cylinder housing, are present. Lock cylinder ( 100 ) according to one of the preceding claims, characterized by at least one resilient element in at least one closing channel ( 36a . 38a . 40a . 42a . 44a ; 36b . 38b . 40b . 42b . 44b ), especially in every closing channel. Lock cylinder ( 100 ) according to claim 11, characterized in that the resilient element ( 34 ) is a spring or a material having elastic properties, in particular a thermoplastic elastomer or a foamed plastic. Lock cylinder ( 100 ) according to one of the preceding claims, characterized in that in one or more closing channels with multi-part closing elements, those parts which are not intended for magnetic position determination, fully or partially constitute optical position sensor. Lock cylinder ( 100 ) according to one of the preceding claims, characterized in that magnetic and optical position sensors are provided for determining the position in at least one closing channel. lock cylinder according to one of the preceding claims, characterized that the position sensor analog and / or digital position encoder represent. lock cylinder according to claim 15, characterized in that in analog position encoders no Reference must be made to the location of the magnetic and optical Position transmitter and position taker. lock cylinder according to one of the preceding claims, comprising an evaluation for analog and / or digital magnetic and / or optical measurements. Locking system, comprising at least one lock cylinder according to a of the preceding claims and at least one evaluation unit in operative connection with at least a first and / or second magneto-sensitive sensor and / or optical Position taker. locking system according to claim 18, characterized in that the evaluation unit at least one signal processor, an identification unit, a Memory unit, an analog / digital converter, a communication unit and / or a power supply. locking system comprising at least one locking system according to claim 18 or 19, at least one lock cylinder according to a the claims 1 to 17 and at least one central unit, wireless or by means of at least one line is in operative connection with the / the evaluation unit (s). locking according to claim 20, comprising at least one display unit, a Keyboard, a programming unit, a connection to an alarm unit, an alarm unit, a modem, an interface to a computer, a telephone dialer and / or an alarm system circuit. door with a front and a back, comprising at least one lock cylinder according to one the claims 1 to 17 and / or at least one locking system according to claim 18 or 19, at least a first motion sensor, at least one second motion sensor, at least one third and / or at least one fourth motion sensor. door according to claim 22, characterized in that the first movement sensor on at least one side of the door at a certain first height, especially above the lock cylinder, is present and relative movements on the door to and from the door Detected away from objects that are at height or above the height of the first motion sensor locate the second motion sensor on the same page as the first motion sensor is present, in particular on a second Height, the below the first height lies, and detects movements of objects that are below the height of the first motion sensor on the door to or away from the door and / or that the third and / or the fourth motion sensor movement the door detected or detected.