WO2021142501A1

WO2021142501A1 - Key for a cylinder lock and coding system for a key

Info

Publication number: WO2021142501A1
Application number: PCT/AT2021/060012
Authority: WO
Inventors: Michael Makivic
Original assignee: Michael Makivic
Priority date: 2020-01-14
Filing date: 2021-01-13
Publication date: 2021-07-22
Also published as: EP4090818A1; AT523378A2

Abstract

The invention relates to a key (2) for a cylinder lock (1), comprising at least one key grip (3) and a key shank (4), wherein a coding (6) which is formed from a plurality of coding elements (7) in the form of protrusions (7a) and depressions (7b) is arranged on the key shank (4), at least on a lateral surface (5) of the key shank (4). The coding elements (7) are in the form of parallel corrugations (8) formed in the longitudinal direction of the key shank (4) over at least a portion of a length (9) of the key shank (4), wherein a plurality of coding elements (7) are arranged adjacent to one another. Furthermore, at every sensing position, an 8-bit coding (6) is arranged on the lateral surface (5) of the key shank (4), and at least two sensing positions (10), in particular 6 to 12 sensing positions (10), are arranged for a key (2).

Description

Key for a cylinder lock and coding system for a key

The invention relates to a key for a cylinder lock and a coding system for a key as described in claims 1 and 8.

Keys, in particular flat keys, are already known in which a coding, in particular coding elements, are attached to the key shaft and are queried via locking plates in a cylinder lock. The coding elements can take place on the one hand via incisions, in particular serrated indentations, on the end faces of the key shaft or via depressions, in particular bores, on the side surface of the key shaft. The disadvantage here is that such codings are very coarse and the usual incisions or usual bores can be imitated with a relatively simple tool. A laterally attached indentation, such as: curves, are a bit better, but this key can also be copied relatively quickly through photography and conventional 3D printers.

Conventional keys are mechanically machined to conform to the cylinder so that grooves, bores or shaped recesses are created. These are subjected to a positive test in the cylinder. If the arbitrary recesses match the positive query in the cylinder, you can twist the core and thus open the cylinder. The recesses were brought into a mathematical order in order to be able to provide a controlled closure. This enables a so-called lock hierarchy to be created for several keys. The object of the invention is therefore to create a key with which, on the one hand, the above-mentioned disadvantages are avoided and, on the other hand, making replication considerably more difficult.

The object is achieved by the invention.

The method according to the invention is characterized in that the coding elements are designed in the form of corrugated tracks formed parallel in the longitudinal direction of the key shaft over at least a partial area of a length of the key shaft, several coding elements being arranged next to one another

The advantage of this is that a shaft or curve, which form the coding elements, is milled into the narrow side of the key in the longitudinal direction of the key bit or key shaft. This means that a single, main and group key can be generated via the waveform, whereby this type of milling makes it very difficult to imitate the fact that the parallel waves blur into one another. The special feature of the invention is to superimpose the depressions of the waveform and preferably more than one per side in order to increase the variation of the key.

A design is advantageous in which coding elements are arranged on both side surfaces of the key shaft, which are designed as mirror images. This ensures that the greatest possible utilization of space is used for the coding, so that a large number of different coding options is created. Furthermore, the rectangular design of the key shaft increases stability.

The designs are advantageous in which coding for individual, main and / or group keys is possible via the coding elements. As a result, such a key can also be used for residential complexes, company buildings or even for individual households. Because it is designed as the main or group key, access to different rooms can be easily regulated, so that not all people have access to every room like this is the case with a master key. This reduces the number of keys on the bunch of keys. Fewer keys are required to operate the system.

It is also advantageous to have a design in which the coding elements, in particular the corrugated track, are milled in the form of depressions, with several depressions being arranged one after the other in the longitudinal direction. On the one hand, this increases the security against forgery, since, due to successive waves that are arranged in several tracks one below the other, blur into one another and, on the other hand, a space-saving coding can be implemented. It is also advantageous that, without the coding of the shaft track, one can only guess at a conclusion about the coding with a great deal of effort.

An embodiment is advantageous in which the coding elements, in particular the depressions in the corrugated track, are designed to be superimposed and preferably more than one per side. This also makes a replica more difficult.

It is also advantageous to have a design in which the coding elements, in particular the depressions in the wave path, are formed by a sine wave or a cosine wave. As a result, the coding can only be produced using a special production process, in particular milling. This means that it is impossible to use commercially available tools such as a drill, wax impression, file, etc. to imitate such a shaft key.

However, it is also advantageous to have a design in which the coding elements, in particular the depressions in the wave path, are formed by interference. This further increases the security against forgery. You can't see the wave very well, you can only see the rest of the material that is left over when you lay several waves on top of each other for coding. A wave could possibly be guessed because it has recurring wave troughs and wave crests. Using multiple shafts, the interference is milled into the key shaft. The negative imprint of the milling pattern, which is an interference pattern of several waves, remains in the key shaft. The object of the invention is also achieved by a coding system for a key in which an 8-bit coding is arranged on the side surface of the key shaft at each query position, with at least two query positions, in particular 6 to 12 query positions, being arranged for a key. This advantageously means that a large number of different coding options are created. Furthermore, for example, the address, any information or the name of the person can be translated to binary coding and thus the key can be encoded. Another advantage here is that it can be uniquely coded using binary coding. With the systems currently on the market, it is not possible to fully exhaust the variations because there are many restrictions from a mechanical point of view. The already small variations in conventional analog coding is further restricted by the type of production - you get less out of it than is theoretically possible than with previous mechanical systems in the form of analog 96-bit coding

However, an embodiment is also advantageous in which the coding, in particular coding elements, are in the form of corrugated tracks formed parallel in the longitudinal direction of the key shaft over at least a partial area of a length of the key shaft, with several coding elements being arranged next to one another. The advantage here is that the protection against forgery is increased due to the wave shape. At the same time, a longitudinally extending wave track can be adapted to the shaft width of the key through the width of a milling so that for the first time 8 parallel query points or wave tracks are possible. There are 8 waves, whereby these waves are scanned on 12 frets or query positions. The collar or the query position then has 8 waves at this position that corresponds to the 8 bits.

A design is advantageous in which coding elements are arranged on both side surfaces of the key shaft, which are designed as mirror images. It is advantageous here that binary coding with 1 bit per query position is possible for the first time, so that the coding can also be personalized with regard to the user. The key can be used in both directions (reversible key) without restricting the ability to vary. An embodiment is advantageous in which coding for individual, main and / or group keys is possible via the coding elements. This creates a large area of application for the key. It also enables overarching lock hierarchies. One person only receives one key with which individual access to the entire system is enabled

An embodiment is advantageous in which the coding elements, in particular the corrugated track, can be produced by milling, which are designed in the form of depressions, with several depressions being arranged one after the other in the longitudinal direction. In this way, the coding can be produced by milling. An increase in the coding options can thus also be achieved due to the wide variety of depths.

A design is also advantageous in which the coding elements, in particular the depressions of the corrugated track, are designed to be superimposed and preferably more than one per side. A simple forgery based on a recorded image is therefore hardly possible any more.

An embodiment is advantageous in which the coding elements, in particular the depressions in the wave path, are formed by a sine wave or a cosine wave. This also increases the security against forgery.

Finally, an embodiment is advantageous in which the coding elements, in particular the depressions in the wave path, are formed by interference from wave paths running parallel in the longitudinal direction.

The invention is explained in more detail with reference to the exemplary embodiments shown in the drawings, the invention not being limited to these exemplary embodiments.

Show it: 1 shows a schematic representation of a cylinder lock with an inserted key, in a simplified, schematic representation;

2 shows a side view of a key, in particular a flat key, in a simplified, schematic representation;

2a shows a side view of the key according to FIG. 2 with schematically drawn locking disks of the cylinder lock, in a simplified, schematic representation;

3 shows a sectional illustration through the key shaft according to FIG. 2, in a simplified, schematic illustration;

4 shows a schematic representation for the locking method of the key with wave-shaped coding, in a simplified, schematic representation; FIG. 5 shows a plan view according to FIG. 4, in a simplified, schematic illustration: FIG. 6 shows a schematic illustration of a special coding for the key on the key shaft, in a simplified, schematic illustration.

By way of introduction, it should be noted that in the different embodiments, the same parts are provided with the same reference symbols or the same component designations, whereby the disclosures contained in the entire description can be transferred accordingly to the same parts with the same reference symbols or the same component designations. The position details chosen in the description, e.g. above, below, to the side, etc., refer to the figure described and are to be transferred to the new position in the event of a change in position. Individual features or combinations of features from the exemplary embodiments shown and described can also represent independent inventive solutions.

In FIGS. 1 to 6, in particular in FIG. 1, a cylinder lock 1 is shown with an inserted key 2 according to the invention, the representation of a catch or a locking lug on the cylinder lock 1 being dispensed with. The locking lug or the driver has the task that when the cylinder lock 1 is released, i.e. when the inserted key 2 can be turned, the driver is turned along with it and, for example, when the cylinder lock 1 is installed in a door (not shown), the rocker or the locking pin is over the driver is operated so that the door can be opened or closed. The key 2 according to the invention is preferably designed as a flat key which consists of a key handle 3 and a key shaft 4. The key shaft 4 has a coding 6 on the side surfaces 5. The coding 6 is formed by several coding elements 7, the coding elements 7 being formed from individual elevations 7a and depressions 7b. It should be mentioned here that the same coding 6, but rotated by 180 °, is used on each side surface 5 of the key shaft 4 so that the key 2 can be inserted into the cylinder lock 1 in any direction. If different codings 6 were used on the side surfaces 5 of the key shaft 4, the coding options are doubled, but the key 2 must always be correctly inserted into the cylinder lock 1 in order to be able to operate the cylinder lock. Such a training would of course be possible, but this is not very user-friendly for the customer or user.

In addition, it must be ensured with such a key 2 that the coding 6 cannot simply be imitated, which is simply the case, for example, with spikes or bores. In the case of such prior art keys 2 with prongs or bores, a simple picture from a cell phone is often sufficient to be able to imitate the key 2 without problems, since the elevations and depressions or prongs of the coding elements are easily recognizable. It is also often easily possible from the prior art for the image to be printed out using a 3D print, as a result of which a simple copy of the key 2 can be created.

According to the invention it is now provided that the coding 6 is specially designed in order to make the reproduction more difficult. For this purpose, the coding elements 7 are in the form of corrugated tracks 8 formed parallel in the longitudinal direction of the key shank 4 over at least a partial area of a length 9 of the key shank 4, several coding elements 7 being arranged next to one another, that is, at least two parallel corrugated tracks 8 are arranged with at least two coding elements 7. An embodiment of the key 2, in particular the flat key, has proven to be advantageous in which four to eight parallel corrugated tracks 8 are arranged, which are queried over six positions 10 via locking disks in the cylinder (not shown), as shown schematically with rectangular dashed lines Locking disks 11 or locking disk symbols 11 is shown. Two locking disks 11 are always used at each position 10, so that there are 12 query positions. This means that four to eight interrogation points of the locking disks 11, which are located one below the other, i.e. vertical, are formed for each position 10 and locking disk 11, so that a coding 6 of 4 to 8 x 12 different possibilities or interrogation points result to which an elevation 7a or a Indentation 7b or a neutral position 7c are arranged in the form of the waves. A very high number of different options for coding 6 is thus created.

The key 2 according to the invention with corrugated tracks 8 is fixed in such a way that the narrow side, i.e. the side surface 5, of the key 2 is milled in the longitudinal direction of the key shaft 4, with a shaft or curve as the coding element 7, in particular elevation 7a, recess 7b or neutral position 7c is formed. The different coding elements 7 can be formed due to a milled depth, the milling being formed or milled continuously, i.e. without interruption, over the length 10 of a corrugated track 8, so that a continuous corrugated track 8 is formed from nothing but intermingling arcs . For this purpose, the key 2 is fastened or inserted in a clamping device (not shown) and then the key shaft 4 is worked by a milling cutter 12, in particular a milling disk 12a or end mill, which corresponds to the width 13 of a corrugated track 8, the milling cutter 12 corresponding to the required depth 14 is adjusted accordingly in order to generate a corresponding wave path 8 after the other. In principle, any other type of processing, such as, for example, a laser with the corresponding material, can be removed, is possible for the production of the key 2.

It can therefore be said that the key 2, in particular a key blank, is clamped in a holder, whereupon the milling cutter 12, in particular the disk-shaped milling cutter 12, on the first wave path 8 at the beginning of the Key shaft 4 is positioned, whereupon the milling cutter 12 mills a horizontally running corrugated track 8 over the length 10 into the key shaft 4 with different depths 14, the milling cutter 12 being placed closer, deeper or further away from the key shaft 4 depending on the required coding element 7 so that the milling cutter 12 generates the coding elements 7, which are designed as shafts, by means of a coherent corrugated path 8, whereby the coding 6 is generated by the different elevations and depressions.

The processing is preferably carried out fully automatically by a computer-controlled milling machine, with software being installed for this purpose, in which one randomly or deliberately entered or created a code 6, whereupon the key blank is automatically processed, that is to say that only the blank is inserted into a fold or a clamping device must be inserted, whereupon one corrugated track 8 after the other corrugated track 8 is milled into the side surfaces 5 of the key shaft 4. After completing one side, the milling machine interrupts the machining process so that the key 2 can be turned if there is no automatic turn, whereupon the second side surface 5 is created, so that the same coding 6 is preferably applied to both sides.

Due to the coherent wave forms, that is to say the wave path 8, such a key 2 cannot easily be imitated. In particular not if only one photo is taken of a key 2, since the successive waves run into one another in such a way that the fleas differences are not perceptible.

Furthermore, it is provided according to the invention that the key 2 according to the invention first has a binary coding 15, as is shown schematically in FIG. 6 in the form of simple depressions. For the first time, eight query points 16 arranged in parallel are arranged on the key shaft 4 in each position 10-1 to 10-12, so that these eight query points 16 are queried in one position via the locking disk 11, which corresponds to 1 byte, i.e. so-called 8 bits per query position 10 -1 to 10-12, i.e. 8 points per locking disc 11, corresponds to.

The key 2 is coded at more than 2, preferably at 6 positions, so that a valley, i.e. a depression 7b, a 0 and a peak, i.e. an elevation 7a, corresponds to a 1. However, several path depths are provided, preferably 3, that is to say also a neutral position 7c. In each of the positions, a locking disk 11 slides in the cylinder lock 1 and scans the elevations 7a (wave crests), depressions (wave troughs) and the neutral position 7c.

In the exemplary embodiment in FIG. 6, all interrogation points 16 are shown schematically with a recess 7a, with different coding elements 7 usually being used. A key 2 and subsequently the associated cylinder lock 11 are thus binary-coded and encrypted / encrypted according to the “AES algorithms (Advanced Encrypting System)”. The encryption corresponds to a 96-bit representation on key 2, whereby the key milling has a matrix of 12x8 bits and the whole thing can be coded by 3 path depths, so that a key 2 can be calculated and produced using 96-bit / 256-bit.

The cylinder lock 1 also uses the “AES algorithms” and decodes the key 2, the key 2 preferably being designed with corrugated tracks 8, that is to say with 8 parallel corrugated tracks 8-1 to 8-8. The formation of 8 parallel tracks or wave tracks 8-1 to 8-8 at a position 10 is possible because the coding 6 is created by the milling cutter 12, in particular the milling disk 12a, the milling width 17 of which corresponds to 1/8 of the The shaft width corresponds to 18, so that 8 tracks 8-1 to 8-8 or query points 16 can be generated one below the other.

For the sake of clarity, it is pointed out that the invention is not limited to the embodiment variants shown, but can also include further developments. In particular, the design variants or individual features of the design variants can also be combined with one another.

Claims

Expectations:

1. Key (2) for a cylinder lock (1), comprising at least one key handle (3) and a key shaft (4), a coding (6) on the key shaft (4) at least on one side surface (5) of the key shaft (4) , which is formed from several coding elements (7) in the form of elevations (7a) and depressions (7b), are arranged, characterized in that the coding elements (7) in the form of parallel in the longitudinal direction of the key shaft (4) formed corrugated tracks (8) are formed over at least a portion of a length (9) of the key shaft (4), several coding elements (7) being arranged next to one another.

2. key (2) according to claim 1, characterized in that on both side surfaces (5) of the key shaft (4) coding elements (7) are arranged, which are mirror images.

3. Key (2) according to claim 1 and 2, characterized in that coding (6) for individual, main and / or group keys is possible via the coding elements (7).

4. Key (6) according to the preceding claims, that the coding elements (7), in particular the wave track (8), can be produced by milling in the form of depressions (7a) and elevations (7b), wherein several depressions (7a) and / or elevations (7b) are arranged one after the other in the longitudinal direction.

5. Key (2) according to the preceding claims, characterized in that the coding elements (7), in particular the depressions (7a) of the corrugated track, are formed overlying and preferably more than one per side.

6. key (2) according to the preceding claims, characterized in that the coding elements (7), in particular the Depressions (7a) of the wave path (8), is formed by a sine wave or a cosine wave.

7. Key (2) according to the preceding claims, characterized in that the coding elements (7), in particular the depressions (a) of the wave path (8), are formed by interference.

8. Coding system for a key (2) for a cylinder lock (1), comprising at least one key handle (3) and a key shaft (4), the key shaft (4) on at least one side surface (5) of the key shaft (4) several coding elements (7) are arranged, characterized in that an 8-bit coding (6) is arranged on the side surface (5) of the key shaft (4) at each query position (10), with at least two query positions (10), in particular 6 to 12 query positions (10) for a key (2) are arranged.

9. Coding system according to claim 8, characterized in that the coding (6), in particular coding elements (7), in the form of corrugated tracks (8) formed in parallel in the longitudinal direction of the key shaft (4) over at least part of a length ( 9) of the key shaft (4) are formed, wherein several coding elements (7) are arranged next to one another.

10. coding system according to claim 8 or 9, characterized in that on both side surfaces (5) of the key shaft (4) coding elements (7) are arranged, which are mirror images.

11. Coding system according to claim 8 to 10, characterized in that coding (6) for individual, main and / or group keys is possible via the coding elements (7).

12. Coding system according to the preceding claims 8 to 11, that the coding elements (7), in particular the wave track (8), by milling, the in the form of depressions (7a) and / or elevations (7b) can be produced, wherein a plurality of depressions (7a) and / or elevations (7b) are arranged one after the other in the longitudinal direction.

13. Coding system according to the preceding claims 8 to 12, characterized in that the coding elements (7), in particular the depressions (7a) of the wave track (8), are formed overlying and preferably more than one per side.

14. Coding system according to the preceding claims 8 to 13, characterized in that the coding elements (7), in particular the depressions (7a) of the wave path (8), is formed by a sine wave or a cosine wave.

15. Coding system according to the preceding claims 8 to 14, characterized in that the coding elements (7), in particular the depressions (7a) of the corrugated track (8), are formed by interference from corrugated tracks (8) running parallel in the longitudinal direction. is trained.