EP2890856B1 - Blank, security key, lock system, and production method - Google Patents

Description

The invention relates to a blank, a security key and a locking system with security keys and associated cylinders and a method for producing the security key from a blank according to the preamble of the independent claims.

In the closing technique, there are the fundamental tasks of preventing and preventing the unauthorized copying of keys with ever better means, and of increasing the number of possible permutations of a key and thus also the security of the locking systems.

From the EP 1 185 755 As a next state of the art, a security-reversible key system is known having a horizontal block groove with coded block depth at the key tip. In the associated cylinder, a Blockzuhaltungspaar consisting of a standard Codierzuhaltung and an extended standard Blockzuzuhaltung, attached, which prevents the Ganz-plugging a key with too low block groove at the rearmost coding position. This block-groove coding gives higher permutation capacities. Even such a horizontal block groove is still not difficult to copy.

The researched WO 2004/048724 discloses a non-generic, backward compatible locking system with blanks and reversible keys thereto and with only one code / tumbler row with first tumblers and first coding recesses, and profile guide grooves having a cross-sectional profile form a cylinder profile and a second type of coding well, which corresponds to a second type of tumbler. The second tumbler is non-rotationally symmetrical, but positively guided and segmented with different shapes of two outer and one inner segment, wherein the outer segments of the second tumbler correspond to two additional grooves at the coding point of the second kind in the key. With the coding of the second kind, an additional turnstile with respect to the shear line can be effected.
With these blanks, keys and cylinders of the WO 2004/048724 however, the following objects of the present invention can not be achieved. In particular, the WO 2004/048724 also no indication of an insertion lock on the key tip by means of a prolonged Gegenzuhaltung.

It is therefore an object of the present invention to provide a system with blanks, security keys and associated cylinders, which the characteristics of known systems, in particular the known block code system to EP 1 185 755 , significantly improved with additional security features, with improved copy protection for keys and blanks through a shape that is very difficult to define and copy and which also allows higher permutation capabilities. In addition, safe operation over a long period of use and insensitivity to wear should be achieved, and rational, cost-effective mass production should be possible.

Above all, the new design should also require no additional space on the key with multiple coding rows. It should be covered with only one type of blank a whole market area and unauthorized key copies by a locksmith should be prevented.

This object is achieved according to the invention by a blank according to claim 1, by a security key for an associated cylinder according to claim 9, by a locking system with security keys and associated cylinders according to claim 15, and by a method for producing such key from blanks according to claim 16.

This new blank block code system, for example, is based on the previous block code system and additionally has new features, properties and functions with which the stated objects are achieved, as is also shown and explained with the figures.

The well-known block code system EP 1 185 755 on the other hand has a locking system with security reversible keys for locking systems with at least three coding / Zuhaltungsreihen A1, A2, A3, which are also arranged on the flat sides of the key S, with associated cylinders Z with pin rows of Zuhaltungspaaren, consisting of tumblers and Gegenzuhaltungen the positions of a given hole pattern, wherein the keys have a horizontal block groove BN, which parallel to the key axis x of the key tip to at least the first position P1 a tumbler row on Key runs, and the block groove has a coded block depth B1, B2, B3, and in the associated cylinder at least at the rearmost coding position P1 a Blocknut BN corresponding tumbler pair with a standard tumbler as Blockzuhaltung BZ and a prolonged Gegenzuhaltung is provided as block countermute BG, so that the block Gegenzuhaltung BG rests on the cylinder sleeve 10 when the block groove is too low and thus the Ganz-plugging a key with too low block groove is blocked by the tumbler pair, and wherein the Blockzuzuzu BZ with the Blockzuzuzu BG after inserting the key on the Position P1 is also used as Codierzuhaltung with standard encoding levels C1, C2, C3, C4 with respect to rotation of the cylinder.

New, important features of the new blank block code system include: The new blank has two parallel side grooves and a middle land therebetween. The side grooves extend at a high level in an input area and at a low level in a first coding area. From the new blank, a key is made with formations of a center groove in the entrance area and coding recesses on the center bar in Codierbereich. The side grooves of the blank and the center groove of the key provide a new, composite blank block code groove. The key is assigned in the cylinder a new, special tumbler with side shoulders, the shape of which correspond to the side grooves and the center groove, so that with the special tumbler an additional Einstecksperre in the entrance area and an additional turnstile in Codierbereich is formed. This significantly increases the security of the locking system and also prevents counterfeiting and unauthorized key copies.

The new features go from the well-known system of EP 1 185 755 not show: Its simple horizontal block groove BN corresponds to the standard Codierzuhaltungen and it is not lowered and the Blockzuhaltung BZ is a standard Codierzuhaltung the coding series. The following are not available: The two side grooves, lowered from the high level to a low level; the central pier on the blank and on the key with coding recesses; the special locking in the cylinder with the additional side shoulders corresponding to the side grooves and the center groove on the key. The additional insertion lock and the additional turnstile are not possible according to EP 1 185 755 ,

The invention according to the independent claims allows various advantageous further embodiments with further improvements and optimizations of the sought properties - according to the desired applications, e.g. with the following additional features: with a broadening of the RB groove; with a lowered center bar; with RB coding stages, which differ from the standard coding stages and / or with an additional secondary notch for non-vertical tumbler rows.

The dependent claims relate to advantageous developments of the invention, which allow further advantages in terms of security of a locking system, copy security of blanks, keys and cylinders, with respect to long life, rational production and safe service and a higher number of permutations.

Fig.1

schematisch einen erfindungsgemässen Rohling mit zwei vertikalen Seitennuten und einem Mittelsteg und deren Niveaus,

Fig. 1a

- im Längsschnitt durch die Mittelebene der Zuhaltungsreihe,

Fig. 1b

- im Querschnitt durch den Eingangsbereich an der Schlüsselspitze,

Fig. 1c

- im Codierbereich der ersten Codierungsposition,

Fig. 2

einen Rohling mit geneigten Innenwänden der Seitennuten,

Fig. 2a

- im Querschnitt durch den Eingangsbereich,

Fig. 2b

- im Codierbereich,

Fig. 3

einen erfindungsgemässen Schlüssel mit zwei Seitennuten und einer Mittelnut im Bereich des Mittelstegs,

Fig. 3a

- im Längsschnitt, mit Seitennuten, Mittelsteg und Mittelnut auf einem hohen und einem tiefen Niveau,

Fig. 3b

- im Querschnitt im Eingangsbereich, mit Seitennuten, Mittelnut und zugeordneter spezieller Zuhaltung mit Seitenschultern, Mittelteil sowie einem Codierungsfräser,

Fig. 3c

- im Codierbereich an einer ersten Codierungsposition,

Fig. 3d

- an einer zweiten Codierungsposition,

Fig. 3e

- eine Standard-Codierzuhaltung der Codierungsreihe und eine Standard-Codierungsvertiefung,

Fig. 3f

ein Beispiel mit einer verbreiterten RB-Nut und einer verbreiterten speziellen RB-Zuhaltung,

Fig. 4

ein erfindungsgemässes Schliesssystem mit einem Schlüssel mit Seitennuten, Mittelsteg und Mittelnut und einem zugeordneten Zylinder mit Gegenzuhaltung und spezieller Zuhaltung mit Seitenschultern,

Fig. 4a

- im Längsschnitt,

Fig. 4b

- im Querschnitt im Eingangsbereich,

Fig. 5 - 8

im Querschnitt einen Schlüssel mit spezieller Zuhaltung und Gegenzuhaltung eines zugeordneten Zylinders,

Fig. 5

- im Eingangsbereich mit der Funktion Eingangssperre,

Fig. 6

- im Codierbereich mit der Funktion Drehsperre,

Fig. 7

- im Codierbereich mit einer Standard-Codierzuhaltung der Codierungsreihe,

Fig. 8

- an einer ersten Codierungsposition einen gefälschten Schlüssel und die spezielle Zuhaltung des Zylinders,

Fig. 9 - 11

an einem Schlüssel verschiedene Codierstufen und Nutformen im Eingangsbereich und im Codierbereich,

Fig. 9

- Standard-Codierstufen an einem bisherigen Schlüssel mit bisheriger Blocknut,

Fig. 10

- Standard-Codierstufen an einem neuen Schlüssel mit neuen, kombinierten RB-Nuten,

Fig. 11

neue RB-Codierstufen,

Fig. 12

ein Beispiel einer verbreiterten RB-Nut mit RB-Zuhaltung,

Fig. 13a

im Querschnitt ein Beispiel eines Rohlings mit einer geneigten Codierungsreihe mit Seitennuten, Mittelsteg und einer Nebennut,

Fig. 13b

eine Aufsicht auf den Rohling sowie Fräser zur Herstellung von Seitennuten, Mittelsteg und Nebennut,

Fig. 13c

eine perspektivische Ansicht des Rohlings,

Fig. 14a

eine perspektivische Ansicht eines aus dem Rohling gefertigten codierten Schlüssels,

Fig. 14b

einen Querschnitt des Schlüssels mit einer zugeordneten speziellen Zuhaltung und einer Standard-Zuhaltung der Codierungsreihe,

Fig. 15

Ansichten eines Schlüssels von oben und perspektivisch mit verschiedenen Codierungen,

Fig. 16

ein Herstellverfahren eines Rohlings und eines Schlüssels mit Fräsern in verschiedenen Schritten,

Fig. 17-19

ein weiteres Beispiel eines Rohlings und Schlüssels mit besonders breiter Mittelnut,

Fig. 17

im Querschnitt den Schlüssel mit RB-Nut im Zylinder mit zugeordneten Zuhaltungen,

Fig. 18

im Querschnitt einen falschen Schlüssel an derselben Stelle im Zylinder mit der RB-Zuhaltung,

Fig. 19a

perspektivisch den Rohling mit abgesenktem Mittelsteg,

Fig. 19b

den Schlüssel mit fünf Codierungsreihen und mit Codierungen.

In the following the invention will be explained with reference to embodiments and figures. Showing:

Fig.1

1 schematically a blank according to the invention with two vertical side grooves and a middle web and their levels,

Fig. 1a

in longitudinal section through the center plane of the tumbler row,

Fig. 1b

in cross section through the entry area at the key tip,

Fig. 1c

in the coding area of the first coding position,

Fig. 2

a blank with inclined inner walls of the side grooves,

Fig. 2a

in cross-section through the entrance area,

Fig. 2b

- in the coding area,

Fig. 3

a key according to the invention with two side grooves and a central groove in the region of the central web,

Fig. 3a

- in longitudinal section, with side grooves, middle bridge and middle groove at a high and a low level,

Fig. 3b

- In cross section in the entrance area, with side grooves, center groove and associated special guard locking with side shoulders, middle part and a coding cutter,

Fig. 3c

in the coding area at a first coding position,

Fig. 3d

at a second coding position,

Fig. 3e

a standard coding stop of the coding series and a standard coding depression,

Fig. 3f

an example with a broadened RB groove and a broadened special RB guard,

Fig. 4

a closing system according to the invention with a key with side grooves, center bar and center groove and an associated cylinder with counter-locking and special guard locking with side shoulders,

Fig. 4a

- in longitudinal section,

Fig. 4b

- in cross-section in the entrance area,

Fig. 5-8

in cross-section a key with special tumbler and counter-locking of an associated cylinder,

Fig. 5

- in the entrance area with the function entrance barrier,

Fig. 6

- in the coding area with the function turnstile,

Fig. 7

in the coding area with a standard coding stop of the coding series,

Fig. 8

at a first coding position a forged key and the special locking of the cylinder,

Fig. 9 - 11

on a key different coding levels and groove shapes in the input area and in the coding area,

Fig. 9

Standard coding steps on a previous key with previous block groove,

Fig. 10

Standard coding steps on a new key with new, combined RB slots,

Fig. 11

new RB coding stages,

Fig. 12

an example of a broadened RB groove with RB tumbler,

Fig. 13a

in cross-section an example of a blank with an inclined coding row with side grooves, center bar and a side groove,

Fig. 13b

a view of the blank as well as cutters for the production of side grooves, middle bar and side groove,

Fig. 13c

a perspective view of the blank,

Fig. 14a

3 is a perspective view of a coded key made from the blank;

Fig. 14b

a cross section of the key with an associated special lock and a standard locking the coding series,

Fig. 15

Views of a key from above and in perspective with different codes,

Fig. 16

a method of manufacturing a blank and a key with cutters in different steps,

Fig. 17-19

another example of a blank and key with a particularly wide center groove,

Fig. 17

in cross section the key with RB groove in the cylinder with associated tumblers,

Fig. 18

in cross-section a wrong key in the same position in the cylinder with the RB tumbler,

Fig. 19a

in perspective, the blank with lowered central web,

Fig. 19b

the key with five coding rows and with codes.

The Fig. 1a - c schematically show an inventive blank R with two vertical side grooves RB-SN and a central web RB-M, which at the beginning at a high level N1 and then lowered to a low level N2 parallel to the key axis x. Here 7 denotes the surface and 5 the median plane of blank and key.
Fig. 1a shows the blank in longitudinal section through the center plane of a coding tumbler A series with the coding levels C1 - C4 for the standard Codierzuhaltungen Cod-ZH this coding row A. The side grooves RB-SN run in an input area RB-E at the key tip at a high level N1. And at a low level N2 in the coding area RB-P of the first coding positions P1, P2, which correspond, for example, to the coding positions L1 and R5 of a left and right drilling pattern, respectively. The central web RB-M can run continuously at the level of the key surface 7 or lowered.

In the simplest case, the central web RB-M runs continuously RB-M (1) and is formed only by producing the lowered side grooves (eg by means of a disc milling cutter). Depending on the application, the center bar on the blank in the coding area RB-P can also be lowered: RB-M (2). Thus, a simpler coding and a more rational production of the keys can be achieved. Manufacturing processes are for example too Fig. 13b and 16 described.

Fig. 1b shows a cross section through the input area RB-E at the key tip with the high level N1 of the side grooves.
Fig. 1c shows in the coding area RB-P the lower level N2 of the lowered side grooves and also a (less strongly) lowered center bar RB-M (2).
Fig. 1c also shows the widths of whole RB groove, side grooves and middle bridge: bg, bn and bm (see Fig. 3d ).

The inventive blank R for producing a security key S with at least two coding / Zuhaltungsreihen Ai on the flat sides of the key for an associated cylinder Z with tumblers ZH and Gegenzuhaltungen GZH has two parallel side grooves RB-SN and a central web RB-M between the side grooves which are parallel to the key axis x and are formed symmetrically to the center plane of the coding / Zuhaltungsreihe A. These side grooves RB-SN extend in an input region RB-E at the key tip at a high level N1 and in an encoding region RB-P of the first encoding positions P1, P2 are lowered to a lower level N2. The side grooves RB-SN are suitably shaped to correspond to the additional side shoulders RB-ZH-S of an associated special tumbler RB-ZH and an extended counter-tumbler RB-GZH of the cylinder such that side grooves RB-SN and side shoulders RB-ZH ZH-S an additional insertion lock in the entrance area RB-E and an additional turnstile in the coding RB-P are executable.

The Fig. 2a, 2b show a blank R with inclined inner walls 11 of the side grooves RB-SN, which have an inclination angle Wm to the center plane of the coding row A (Zuhaltungsebene). This angle of inclination Wm can be, for example, 10 ° -40 ° and allow further shape variations of side grooves and be optimized depending on the application.
Fig. 2a shows a corresponding shaping of the side grooves RB-SN in the input area RB-E and Fig. 2b in the coding area RB-P.
On the blank only the side grooves RB-SN and the middle bar RB-M are available. The composite blank block code groove = RB-SN + RB-MN is first formed with the coding and a coding router by manufacturing the center groove RB-MN on the key.

The Fig. 3a - d show a novel key S with the two side grooves RB-SN and a center groove RB-MN, which is at the central web RB-M, or in its region, made. In the coding region RB-P, the coding position P1 is coded with the coding stage C1 and the coding position P2 with the coding stage C2 in this example.
Fig. 3a shows a longitudinal section through the key S.

Fig. 3b shows a cross section in the input area RB-E with composite RB groove = RB-MN + RB-SN. This corresponds to an associated special tumbler RB-ZH in the cylinder with additional side shoulders RB-ZH-S, which correspond to the side grooves RB-SN of the key S.
Further, a coding router 14 for coding standard codes Ci (and also the RB codes) is shown, which corresponds to the form of the standard Codierzuhaltungen Cod-ZH. A (illegally) manufactured Blocknut BN in the entrance area of a key would be locked out by the side shoulders RB-ZH-S of the RB-Zuhaltung (with the additional blocking area Fs, see Fig. 5 and 10 ). Fig. 3c shows a cross section in the coding region RB-P at the coding position P1 here with a lowest coding C1, in which the side grooves RB-SN are at the level N2.
Fig. 3d shows at the coding position P2 a coding C2 with the center groove RB-MN on the central web RB-M.
The width bn of the side grooves RB-SN and the width bm of the center land RB-M are matched to each other. Together, the whole groove width bg = bm + 2 bn.
These widths bn and bm may, for example, be in a range of bn = 20-33% and bm = 33-60% of the total groove width bg.
Preferably, the width bm of the central web is at least 33% of the whole groove width bg and the width bn of the side grooves is at least 20% of the whole groove width bg.
Fig. 3e shows a standard Codierzuhaltung Cod-ZH and a standard coding pit Cod V of the coding series A.

The inventive security key S with at least two coding / Zuhaltungsreihen Ai on the flat sides of the key for an associated cylinder Z with tumblers ZH and Gegenzuhaltungen GZH has in a coding row A two parallel side grooves RB-SN and a center groove RB-MN between the side grooves, which parallel to the key axis x and symmetrical are formed to the center plane of a coding-Zuhaltungsreihe A, wherein in the region of the center groove RB-MN in a coding RB-P coding recesses at the first coding positions P1, P2 are formed. The key preferably has at least three or more coding rows Ai.
These side grooves RB-SN are at a high level N1 in an input area RB-E at the key tip, and are lowered to a lower level N2 in a coding area RB-P of the first coding positions P1, P2. This creates additional permutations in the coding area.
The side grooves RB-SN are suitably shaped to correspond to the additional side shoulders RB-ZH-S of an associated special tumbler RB-ZH and an extended counter-tumbler RB-GZH of the cylinder, so that with the side grooves RB-SN of the key and the side shoulders RB-ZH-S the guard RB-ZH an additional insertion barrier in the entrance area RB-E or an additional turnstile in the coding RB-P are executable. Wherein, in the region of the central web RB-M, the additional center groove RB-MN in the input range RB-E and the encodings of P1, P2 in the encoding range RB-P can be produced.
Corresponding to the first coding positions P1, P2 on the key, the special tumbler RB-ZH must be arranged at the rearmost position of the tumbler row A in the cylinder.

Fig. 3f shows another example of a key S (2) with a broadening of the RB-groove: RB-N (2) compared to the standard coding of the coding series A: The width bg (2) of the RB-groove (with side grooves RB-SN and Middle web RB-M or center groove RB-MN) is on both sides by an amount bb greater than the width bcv of the coding wells Cod-V of the coding series A: bg (2) = bcv + 2 bb (see Fig. 12 and 17 ). With this broadening, in particular for cylindrical tumblers and encodings, further improvements in properties such as reliability, protection against forgery and lifetime can be achieved.

The Fig. 4a, b show in longitudinal and in cross section a closing system according to the invention with a key S with side grooves RB-SN, a lowered central web RB-M (2) and a center groove RB-MN and with an associated cylinder Z with a prolonged Gegenzuhaltung RB-GZH and a special guard RB-ZH with side shoulders RB-ZH-S. These tumblers cause an insertion lock for wrong keys in the entrance area RB-E: once through the center section RB-ZH-M and additionally through the side shoulders RB-ZH-S of the guard locking RB-ZH. By with wrong keys, which have insufficiently deep center groove or side grooves, then the extended counter-locking RB-GZH rests on the cylinder sleeve 10 and thus the whole insertion of the wrong key is prevented.
In an analogous manner, a rotation lock is exercised in coding region RB-P with inappropriate coding forms and coding depths of a wrong key, in which case the side shoulders RB-ZH-S and / or the middle part RB-M of the special tumbler RB-ZH are present in a wrong coding recess and so that the guard RB-ZH extends beyond the shear line 9 and thus prevents the turning of the key.

The inventive locking system with security keys S with at least two coding / Zuhaltungsreihen Ai on the flat sides of the key and with associated cylinders Z with tumblers ZH and Gegenzuhaltungen GZH has key S with two parallel side grooves RB-SN and a center groove RB-MN in a coding row A. on, which are formed parallel to the key axis x and symmetrical to the center plane of the tumbler row A, with coding recesses in the region of the center groove RB-MN at the first coding positions P1, P2. These side grooves RB-SN are at a high level N1 in an input area RB-E at the key tip, and in a coding area RB-P of the first coding positions P1, P2, they are lowered to a lower level N2. The associated cylinders Z point to the rearmost coding position P1, P2 of the Cylinder a special locking RB-ZH with additional side shoulders RB-ZH-S on.
These side shoulders RB-ZH-S of the tumbler RB-ZH are shaped to correspond to the side grooves RB-SN of the key, with the length ls of the tumbler RB-ZH and the tumbler RB-GZH up to the side shoulder RB in the entrance area RB-E -ZH-S corresponds to the distance ds of the cylinder sleeve 10 to the side groove RB-SN and at a first coding position P1, P2 the length lz of the tumbler RB-ZH to the side shoulder RB-ZH-S the distance dz of shear line 9 to the side groove RB-SN, with a tolerance range to, corresponds so that with the side grooves RB-SN of the key and the side shoulders RB-ZH-S of the assigned special guard locking RB-ZH an additional insertion lock in the input area RB-E and an additional turnstile in the coding area RB-P are executable by in the case of missing or too little deep side grooves RB-SN in the input area, the counter-locking RB-GZH rests on the cylinder sleeve 10 (insertion lock) and in Codierbereich the special locking RB-ZH on di e shear line 9 extends (turnstile).

The Fig. 5-8 for example, further illustrate the functions of the new blank block code system and show in cross-section a key and a special tumbler RB-ZH and a counter-tumbler RB-GZH of an associated cylinder.

Fig. 5 illustrates the function "Ingress barrier" in the entrance area RB-E. The tumbler pair RB-ZH + RB-GZH has a length ls to the side shoulder RB-ZH-S and here ds denotes the distance from the cylinder sleeve 10 to the side grooves RB-SN. The length ls plus a small tolerance range to (of eg 0.05 - 0.1 mm) corresponds to the distance ds and thus allows the insertion of the key, while with a wrong key with missing or too low combined grooves RB-MN and RB-SN the tumbler pair RB -ZH + RB-GZH would stand up on the cylinder sleeve 10 and thus prevent the insertion of a wrong key (see Fig. 4a ).

Fig. 6 illustrates the function turnstile in the coding range RB-P. With correctly coded grooves RB-MN and RB-SN, in which also the length lz of the associated tumbler RB-ZH to the shoulder RB-ZH-S is not greater than the distance dz from the shear line 9 to the side grooves RB-SN at level N2, the key can be turned. Otherwise not - as in Fig. 8 is illustrated.

Fig. 7 shows at a coding position P1, P2 a (previous) standard Codierzuhaltung Cod-ZH the Zuhaltungsreihe A instead of the special tumbler RB-ZH, which may also correspond to the shear line 9. According to the invention, however, the special tumbler RB-ZH is used and not a standard Codierzuhaltung this tumbler A series as in the previous block code according to EP 1 185 755 ,

Fig. 8 shows at a first coding position P1, P2 a false (fake) key Sb, in which in a standard coding pit Cod-V coding depth C1 in the area RB-MN probably would be copied correctly (fit for a previous standard Codierzuhaltung Cod-ZH) Fig. 7 ). Then, however, the special tumbler RB-ZH would stand up with the side shoulders RB-ZH-S at the coding recess Cod-V and thus extend beyond the shear line 9 (locked out by a distance a) and prevent the rotation. This additional turnstile, by the tumblers RB-ZH at the coding stages in the coding region RB-P of a wrong key Sb, is also in the FIGS. 9 and 10 illustrated.

The Fig. 9 - 11 show on a key different coding stages Ci and groove shapes in the input area and at the first coding positions and a comparison of previous Blocknuten (BN) with new RB-grooves.
In comparison with the blocking surface of the previous block groove (BN) in the entry area, the area of a new, composite blank block code RB groove = RB-MN + RB-SN of the same size and blocking effect is wider and less deep. In order to a larger coding depth range (eg more coding levels) is available up to the lowest coding level C1 for the coding of the positions P1, P2. Or the blocking surface and the blocking effect of the new RB groove are at the same depth, as in the previous Blocknut (BN), correspondingly larger in the input area RB-E.
The distance dN between levels N1 and N2 must be at least one coding stage dC. Preferably, N2 corresponds to the lowest coding stage, here C1 in 10 and 11 ,

Fig. 9 shows standard coding stages C1-C4 on a previous or a fake key Sb with a previous block groove BN with a depth B2, which lies below the coding C3. For the coding of the coding positions P1, P2, therefore, only two levels remain: C1 and C2.

Fig. 10 shows a new RB groove with a locking surface Fs same size as in Fig. 9 and lesser depth = at the level of the coding stage C3. For the coding P1, P2, therefore, three stages remain: C1, C2, C3.

Fig. 11 shows a new RB groove with the same depth (B2) as those of the previous block groove BN of Fig. 9 and with much larger blocking surface Fs and blocking effect. In addition, the RB coding stages C2 * and C3 * could here be placed somewhat lower than the standard coding stages C2, C3, so that three stages are also possible for the coding of P1, P2: C1, C2 *, C3 *. The RB coding stages Ci * may be higher or lower in the coding range than the standard coding stages Ci of the coding series A for the standard tumblers Cod-ZH with a correspondingly different length of the associated special tumbler RB-ZH.
Preferably, at least one RB coding stage Ci * can not correspond to a standard coding stage Ci.
The number of possible permutations and the security against counterfeiting can be significantly increased with the new RB slots.

• im Eingangsbereich RB-E gegen Einstecken gesperrt (durch die zusätzlichen Sperrflächen Fs)
• und an den Codierungspositionen P1, P2 im Codierbereich auf allen Codierstufen C1, C2, C3 gegen Drehen gesperrt,

auch wenn die Tiefen im Eingangsbereich und an den Codierungspositionen gleich wären wie bei einem korrekten Schlüssel S mit RB-Nut und RB-Codierungen, wie dies in den Fig. 6, 8, 9 und 10 illustriert ist.A previous or a counterfeit key Sb with a previous block groove BN in the input area RB and with previous standard coding recesses (generated by means of a coding cutter 14) would be replaced by the special locking RB-ZH (which corresponds to the RB groove).

• locked in the entrance area RB-E against insertion (by the additional blocking surfaces Fs)
• and locked at the coding positions P1, P2 in the coding region on all coding stages C1, C2, C3 against rotation,

even if the depths in the input area and at the coding positions would be the same as for a correct key S with RB-groove and RB-coding, as in the Fig. 6, 8 . 9 and 10 is illustrated.

Such a wrong or unauthorized key copy (Sb), which would be copied by a locksmith by means of a coding cutter with equal depths in the input area and at the coding positions P1, P2 as the original key, would therefore encounter an insertion lock and a turnstile.

Fig. 12 shows another example of a broadened RB groove with RB tumbler compared to the standard Codierzuhaltungen Cod-ZH and Codungsvertiefungen Cod-V coding series A with cylindrical tumblers. In addition to the widening bb, here too the distance ba is shown, by which the RB-tumbler RB-ZH extends beyond the coding depressions Cod-V on both sides: brz (2) = bcv + 2 ba (see also FIG Fig. 3e, 3f and 18 ).

The Fig. 13 and 14 show a further example of an inventive blank and key, in which case the tumbler A has an inclination angle Wa of 15 ° to the z-direction.

The Fig. 13a, b . c show in different views the blank R with the new remote side grooves RB-SN and the central web RB-M and with an additional minor notch RB-nn.

Fig. 13a shows in cross-section the inclination angle Wa of the tumbler row A, the side grooves RB-SN, the central web RB-M and the sub-groove RB-nn in the input RB-E and in the coding RB-P.
Fig. 13b shows a view from above of the rotated by 15 ° blank (thus in the direction of the locking level A).
This figure also illustrates an advantageous, rational production of a blank by first a lowered central web RB-M (2) in the coding RB-P by means of a cylindrical milling 15 and then the side grooves RB-SN in the input RB-E at a level N1 and can be produced in the coding region RB-P at a level N2 by means of a milling cutter 16. In this example with vertical inner walls 11 of the side grooves RB-SN, for example by means of a cylindrical cutter 16; for inclined inner walls 11 by means of a conical cutter (see example Fig. 2a, b ).
Fig. 13c shows the blank in a perspective view.

Preferably, in the case of a blank or a key with an inclined guard locking plane A with an inclination angle Wa> 0 on the inside, an additional side groove RB-nn can adjoin the side groove RB-SN, which side groove forms a support surface orthogonal to the coding guard A plane. Thus, for example, the inlet of a zero tumbler can be made possible or optimized. Such a zero tumbler consists only of an upper part with width b0 without lower coding part as in Fig. 14b is illustrated.

In the method according to the invention for producing a key S from a blank R, a center groove RB-MN in the input region RB-E and coding recesses Cod-V at the first coding positions P1, P2 in the coding region are produced by means of a coding on the blank R by removal of the center web RB-M RB-P made. In this case, the side grooves RB-SN are first produced at a high level N1 on the blank and offset at a lower level N2 with the center web RB-M.

Subsequently, with the coding, the second part RB-MN of the combined RB groove = RB-SN + RB-MN and the coding on the middle web RB-M of the key are manufactured. This allows better copy protection and other security features.
A blank with not lowered RB-M central web can be produced, for example, simply by producing the lowered side grooves RB-SN by means of a disc milling cutter.

Preferably, also at the blank first a lowered center bar RB-M (2) in the coding (RB-P) by means of a first router and then the side grooves RB-SN in the input area (RB-E) at a high level (N1) and in the coding (RB-P) are produced at a lower level (N2) by means of a second milling cutter.

The Fig. 14a . b show a manufactured from the blank coded key S with four coding rows A1 to A4.
Fig. 14a shows a perspective view of the key with a coding C1 at the coding position P1 and a coding C2 at the coding position P2 in the coding region RB-P, which are mounted on the central web RB-M.
Fig. 14b shows a cross section of the key with an associated special lock RB-ZH at a coding position in the coding area RB-P and a standard Codierzuhaltung Cod-ZH and a standard coding pit Cod-V the same coding row A (ie from position P3).

Fig. 15 shows from above and in perspective another example of a key with a bb on both sides widened RB groove with width bg (2) = bcv + 2 bb and with RB coding Ci *, which differ from the standard coding stages, here in position P1: C1 * at P2: C2 * and at P3: C2.

• In einem ersten Schritt a mittels eines ersten Fräsers 15 fräsen eines abgesenkten Mittelstegs RB-M(2) im Codierbereich RB-P und im Schritt b fräsen einer Nebennut RB-nn, dann mittels eines zweiten Fräsers 16 im Schritt c fräsen der beiden Seitennuten RB-SN und später im Schritt d mittels eines Codierfräsers 14 fräsen der Mittelnut RB-MN und der Codierungsvertiefungen sowohl im Codierbereich RB-P (P1, P2) als auch an den weiteren Codierungspositionen P3, P4 etc. der Standard-Codierungen der Codierungsreihe A.

Fig. 16 shows a manufacturing method of a blank and a key with a sloping guard level A with milling cutters in different steps:

• In a first step a by means of a first milling cutter 15 milling a lowered central web RB-M (2) in the coding RB-P and milling in step b a side groove RB-nn, then by means of a second cutter 16 in step c milling the two side grooves RB -SN and later in step d by means of a coding cutter 14 milling the center groove RB-MN and the coding wells both in the coding region RB-P (P1, P2) and at the other coding positions P3, P4, etc. of the standard coding of the coding series A.

The central web RB-M (2) is preferably lowered at most up to the height of the uppermost coding stage - here at most up to C2 *. (In Fig. 10 at most up to C3, in Fig. 11 at most up to C3 *.)

The Fig. 17-19 show a further embodiment of an inventive blank and key with vertical tumbler A series in a cylinder. Here is a particularly wide center groove RB-MN with a width bmn eg for particularly good guidance of the tumblers by the center groove, with minimal wear, provided.

Fig. 17 shows in cross-section the key with RB groove in the cylinder and with associated tumblers of the coding series A1. The special tumbler RB-ZH lies in a lowest coding position, eg P1: C1, so that the correct key can be turned on the shear line 9. The broadening of the RB-groove compared to the standard codings Cod-V of the same coding series A1 is: 2 bb = bg (2) -bcv.

Fig. 18 shows in cross-section a wrong key Sb at the same position in the cylinder with an RB guard, wherein the wrong key Sb has a standard coding Cod-V instead of the widened RB-grooves RB-SN and RB-MN. Here is the RB-tumbler already on the key surface 7 and thus locks at the shear line 9 against turning. This is true even if the width brz of the tumbler RB-ZH is only slightly larger here (ba) than the width bcv of the standard coded pit Cod-V with 2 ba = brz-bcv. Because the spring of the Gegenzuhaltung (see Fig. 4a ), the tumbler RB-ZH can not forcibly press in the too narrow depression Cod-V. In contrast to the coding series A1 with cylindrical tumblers RB-ZH and Cod-ZH of Fig. 17 The key here also has a further coding series A2 with conical tumblers and depressions Cod-V2.

• an der Codierungsposition P1 die Codierstufe C2 und
• an der Codierungsposition P2 die Codierstufe C1.

The Fig. 19a, b show in perspective the blank R and the key S with (at least) five coding rows A1 - A5 and with codings.
Fig. 19a shows the blank R with the side grooves RB-SN and the central web RB-M in the input range RB-E and lowered in the coding range RB-P for the coding positions P1, P2.
Fig. 19b shows a coded key S made from the blank, wherein the RB shape in the vertical Zuhaltungsreihe A1 (Wa = 0 °) is mounted. In the coding area RB-P, the key here has the following codes on the central web RB-M:

• at the coding position P1, the coding C2 and
• at the coding position P2, the coding C1.

x, y, z

Raumrichtungen

R

Rohling

S

Schlüssel

Sb

Schlüssel bisher

Z

Zylinder

Pi

Codierungspositionen

Ri, Li

Rechts-, Links-Codierungspositionen

A

Codierungs-, Zuhaltungsreihe (Mittelebene)

Ci, Ci*

Codierstufen, Codierung

RB

Rohlingsblockcode (-Funktion)

RB-SN

RB-Seitennuten

RB-M

RB-Mittelsteg

RB-MN

Mittelnut an S

RB-N

zusammengesetzte RB-Nut = RB-SN + RB-MN bzw. RB-SN + RB-M

RB-nn

Nebennut

Cod-V

Codierungsvertiefung

Cod-ZH

Codierzuhaltung (Standard)

Cod-ZH-M

Codierzuhaltung Mittelteil (Spurteil)

RB-ZH

spezielle RB-Zuhaltung

RB-GZH

RB-Gegenzuhaltung

RB-ZH + RB-GZH

RB-Zuhaltungspaar

RB-ZH-S

ZH-Seitenschulter

RB- ZH-M

ZH-Mittelteil (Codierungsspurteil)

Fs

zusätzliche Sperrfläche

RB-E

Eingangsbereich

RB-P

Codierbereich (P1, P2...) vorderste Position

ls

Länge von RB-ZH + RB-GZH bis RB-ZH-S

ds

Abstand von 10 bis RB-SN

lz

Länge von RB-ZH bis RB-ZH-S

to

Toleranzbereich

dz

Abstand von 9 bis RB-SN

dN

Abstand von N1 zu N2

a

Aussparung, Abstand

dC

eine Codierungsstufe

bm

Breite von RB-M

bn

Breite von RB-SN

bg

Breite von RB-N = RB-SN + RB-M

bnn

Breite von RB-nn

bg(1)

= bcv

bg(2)

= bcv + 2 bb

brz

Breite von RB-ZH

bcv

Breite von Cod-V

bcz

Breite von Cod-ZH

bb

Verbreiterung von RB-N: bg(2) = bcv + 2 bb

ba

brz - bcv = 2 ba

bmn

Breite von RB-MN

b0

obere Breite von ZH

Wm

Neigungswinkel von 11

Wa

Neigungswinkel von A

5

Mittelebene von S

7

Oberfläche von S

9

Scherlinie in Z

10

Zylinderhülse

11

Innenwände von RB-SN

14

Codierungsfräser

15, 16

Rohlingsfräser

The following terms are used in this description:

x, y, z

spatial directions

R

blank

S

key

sb

Key so far

Z

cylinder

pi

coding positions

Ri, Li

Right, left coding positions

A

Coding, tumbler row (center plane)

Ci, Ci *

Coding levels, coding

RB

Blank block code (function)

RB-SN

RB-side grooves

RB-M

RB-center bar

RB-MN

Middle well to S

RB-N

composite RB groove = RB-SN + RB-MN and RB-SN + RB-M, respectively

RB-nn

sub-groove

Cod-V

coding groove

Cod-ZH

Coding Locking (standard)

Cod-ZH-M

Coding tumbler middle part (Spurteil)

RB-ZH

special RB tumbler

RB GZH

RB Gegenzuhaltung

RB-ZH + RB-GZH

RB Zuhaltungspaar

RB-ZH-S

ZH-side shoulder

RB-ZH-M

ZH middle section (coding gauge)

fs

additional blocking area

RB-E

entrance area

RB-P

Coding area (P1, P2 ...) foremost position

ls

Length of RB-ZH + RB-GZH to RB-ZH-S

ds

Distance from 10 to RB-SN

lz

Length from RB-ZH to RB-ZH-S

to

tolerance

dz

Distance from 9 to RB-SN

dN

Distance from N1 to N2

a

Recess, distance

dC

an encoding level

bm

Width of RB-M

bn

Width of RB-SN

bg

Width of RB-N = RB-SN + RB-M

bnn

Width of RB-nn

bg (1)

= bcv

bg (2)

= bcv + 2 bb

brz

Width of RB-ZH

bcv

Width of Cod-V

bcz

Width of cod ZH

bb

Broadening of RB-N: bg (2) = bcv + 2 bb

ba

brz - bcv = 2 ba

bmn

Width of RB-MN

b0

upper width of ZH

Wm

Inclination angle of 11

Wa

Inclination angle of A

5

Median plane of S

7

Surface of S

9

Shear line in Z

10

cylinder sleeve

11

Interior walls of RB-SN

14

coding cutter

15, 16

blank cutters

Claims (18)

1. A blank (R) for manufacturing a security-turn key with at least two coding rows / pin rows (Ai) on the flat sides of the key for an assigned cylinder (Z) with tumbler pins (ZH) and with counter pins (GZH) of a lock system with an insertion block, acting by means of an extended counter pin, characterised by

   - two parallel lateral grooves (RB-SN) and a central projecting part (RB-M) between the lateral grooves, and which are formed parallel to the key axis (x) and symmetrically to the central plane of a coding row / pin row (A),

   - wherein the lateral grooves (RB-SN) and the central projecting part (RB-M) are extending from the key tip to a coding region (RB-P) of first coding positions (P1, P2)

   - and said lateral grooves (RB-SN) in an entry region (RB-E) at the key tip running at a high level (N1) and in the coding region (RB-P) of the first coding positions (P1, P2) running in a sunk manner at a lower level (N2),

   - wherein the lateral grooves (RB-SN) are suitably shaped, in order to correspond to additional lateral shoulder (RB-ZH-S) extending in the longitudinal and transverse direction to the key axis (x) of an associated cylindrical special tumbler pin (RB-ZH) and an extended counter pin (RB-GZH) at the rearmost coding position (P1, P2) of the cylinder,

   - so that an additional insertion block, acting by means of the extended counter pin (RB-GZH) in the entry region (RB-E) and an additional rotation block in the coding region (RB-P) can be carried out by the lateral grooves (RB-SN) of the blank and the lateral shoulders (RB-ZH-S) of the associated special tumbler pin.
2. A blank according to claim 1, characterised in that the central projecting part (RB-M) is sunk to a lower level (RB-M(2)) in the coding region (RB-P).
3. A blank according to claim 1 or 2, characterised in that the complete width (bg(2)) of lateral grooves (RB-SN) and the central projecting part (RB-M) on both sides is larger than the width (bcv) of the coding recesses (Cod-V) of the coding row (A) by an amount (bb).
4. A blank according to one of the preceding claims, characterised in that the width (bm) of the central projecting part (RB-M) is at least 33% of the complete groove width (bg).
5. A blank according to one of the preceding claims, characterised in that the width (bn) of a lateral groove (RB-SN) is at least 20% of the complete groove width (bg).
6. A blank according to one of the preceding claims, characterised in that the inner walls (11) of the lateral grooves (RB-SN) are inclined at an angle (Wm) to the pin plane (A).
7. A blank according to claim 6, characterised in that the angle (Wm) is = 10° to 40°.
8. A blank according to one of the preceding claims, characterised in that with an inclined pin plane (A) with an inclination angle (Wa) larger than 0, on the inner side, an additional side groove (RB-nn) adjoins to the lateral groove (RB-SN), said side groove forming a supporting surface orthogonal to the coding plane / pin plane (A).
9. A security key (S) with at least two coding rows / pin rows (Ai) on the flat sides of the key for an assigned cylinder (Z) with tumbler pins (ZH) and with counter pins (GZH) of a lock system with an insertion block, acting by means of an extended counter pin, characterised by

   - two parallel lateral grooves (RB-SN), a central groove (RB-MN) and a central projecting part (RB-M) between the lateral grooves, and these are formed parallel to the key axis (x) and symmetrically to the central plane of a coding row / pin row (A),

   - wherein the lateral grooves (RB-SN) the central grooves (RB-MN) and the central projecting part (RB-M) are extending from the key tip to a coding region (RB-P) of the first coding positions (P1, P2)

   - wherein coding recesses are formed at the first coding positions (P1, P2) in the region of the central groove (RB-MN) in the coding region (RB-P),

   - and wherein the lateral grooves (RB-SN) in an entry region (RB-E) at the key tip running at a high level (N1) and in the coding region (RB-P) of the first coding positions (P1, P2) running in a sunk manner at a lower level (N2),

   - wherein the lateral grooves (RB-SN) are suitably shaped, in order to correspond to an additional lateral shoulder (RB-ZH-S) extending in the longitudinal and transverse direction to the key axis (x) of an associated cylindrical special tumbler pin (RB-ZH) and an extended counter pin (RB-GZH) at the rearmost coding position (P1, P2) of the cylinder,

   - so that an additional insertion block, acting by means of the extended counter pin (RB-GZH) in the entry region (RB-E) and an additional rotation block in the coding region (RB-P) can be carried out by the lateral grooves (RB-SN) of the key and the lateral shoulders (RB-ZH-S) of the associated special tumbler pin (RB-ZH).
10. A key according to claim 9, characterised in that the coding recesses of the first coding positions (P1, P2) are formed on a sunk central projecting part (RB-M(2)).
11. A key according to claim 9 or 10, characterised in that the complete width (bg(2)) of lateral grooves (RB-SN) and the central groove (RB-MN) on both sides is larger than the width (bcv) of coding recesses (Cod-V) of the coding row (A) by an amount (bb).
12. A key according to one of the claims 9 to 11, characterised in that with an inclined pin plane (A) with an inclination angle (Wa) larger than 0, on the inner side, an additional side groove (RB-nn) adjoins to the lateral groove (RB-SN), said side groove forming a supporting surface orthogonal to the pin plane (A).
13. A key according to one of the claims 9 to 12, characterised in that RB coding steps (Ci*) in the coding region are situated higher or more deeply than the standard coding steps (Ci) of the coding row (A) with a correspondingly different length of the assigned tumbler pin (RB-ZH).
14. A key according to one of the claims 9 to 13, characterised in that the distance (dN) between the high level (N1) and the lower level (N2) is at least one coding step (dC).
15. A lock system with security keys (S) with at least two coding rows / pin rows (Ai) on the flat sides of the key and with assigned cylinders (Z) with tumbler pins (ZH) and with counter pins (GZH) and with an insertion block, acting by means of an extended counter pin, characterised by

    - keys (S) according to claim 9

    - and by assigned cylinders (Z) with a cylindrical special tumbler pin (RB-ZH) at the rearmost coding position (P1, P2) of the cylinder, said special tumbler pin comprising an additional lateral shoulder (RB-ZH-S), which extends in the longitudinal and transverse direction to the key axis (x),

    - wherein these lateral shoulders (RB-ZH-S) of the special tumbler pin (RB-ZH) are shaped such that they correspond to the lateral grooves (RB-SN) of the key,

    - and wherein in the entry region (RB-E), the length (ls) of the special tumbler pin (RB-ZH) and an extended counter pin (RB-GZH) up to the lateral shoulder (RB-ZH-S) corresponds to the distance (ds) from the cylinder housing (10) up to the lateral groove (RB-SN),

    - and at a first coding position (P1, P2), the length (lz) of the special tumbler pin (RB-ZH) up to the lateral shoulder (RB-ZH-S) corresponds to the distance (dz) from the shear line (9) up to the lateral groove (RB-SN), with a tolerance region (to),

    - so that an additional insertion block, acting by means of the extended counter pin (RB-GZH), in the entry region (RB-E) and an additional rotation block in the coding region (RB-P) can be carried out with the lateral grooves (RB-SN) of the key and the lateral shoulders (RB-ZH-S) of the assigned special tumbler pin (RB-ZH).
16. A method for manufacturing a key (S) according to one of the claims 9 to 14, from a blank (R) according to one of the claims 1 to 8, by way of a coding,
    characterised in that on the blank (R), a central groove (RB-MN) is manufactured in the entry region (RB-E) and coding recesses (Cod-V) are manufactured at the first coding positions (P1, P2) in the coding region (RB-P), by way of material removal at the central projecting part (RB-M).
17. A method according to claim 16, characterised in that on the blank, firstly a sunk central projecting part (RB-M(2)) is manufactured in the coding region (RB-P) by way of a first milling cutter, and subsequently the lateral grooves (RB-SN) are manufactured in the entry region (RB-E) at a high level (N1) and in the coding region (RB-P) at a lower level (N2) by way of a second milling cutter.
18. A method according to claim 17, characterised in that on the blank, and with an inclined pin plane (A) with an inclination angle (Wa) > 0, firstly the sunk central projecting part (RB-M(2)) and an additional side groove (RB-nn) are created by way of a first milling cutter.

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