ES2627994T3 - Blank part, safety key, locking system and manufacturing procedure - Google Patents

Abstract

Blank (R) for the manufacture of a reversible security key with at least two coding/tumbler rows (Ai) on the flat sides of the key for an associated cylinder (Z) with tumblers (ZH) and counter-tumblers (GZH ) of a locking system with an insertion lock that acts by means of an extended counter-catch, characterized by - two parallel lateral grooves (RB-SN) and a central web (RB-M) between the lateral grooves, which are configured parallel to the key axis (x) and symmetrically to the central plane of a coding/tumbler row (A), - the lateral grooves (RB-SN) and the central web (RB-M) extending from the key tip to an area coding (RB-P) of the first coding positions (P1, P2), - and running the lateral grooves (RB-SN) in an entry zone (RB-E) in the key tip at a high level ( N1) and in the coding zone (RB-P) of the first coding positions (P1, P2) in a lowered manner towards at a deeper level (N2), - the lateral grooves (RB-SN) being formed in a suitable way to correspond to an additional lateral shoulder (RB-ZH-S), configured in the longitudinal and transverse directions with respect to the axis of key (x), a special associated cylindrical tumbler (RB-ZH) and an extended counter tumbler (RB-GZH) in the rearmost coding position (P1, P2) of the cylinder, - so that with the lateral grooves ( RB-SN) of the blank and the lateral shoulders (RB-ZH-S) of the associated special tumbler an additional insertion lock can be realized which acts via the extended counter tumbler (RB-GZH) in the entry area (RB -E) and an additional twist lock in the coding area (RB-P).

Description

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DESCRIPTION

Blank part, safety key, locking system and manufacturing procedure

The invention relates to a blank, a security key and a locking system with security keys and associated cylinders as well! as to a procedure for manufacturing the security key from a blank according to the preamble of the independent claims.

In the closure technique there are the fundamental objectives of making it difficult and preventing on the one hand the illiterate copy of keys with better and better means and on the other hand increasing the number of the possible permutations of a key and with it also the security of the systems of closing.

From EP 1 185 755 as a state of the prior art, a locking system with reversible safety keys is known, which at the key tip has a horizontal locking groove with an encoded locking depth. In the associated cylinder in the most posterior coding position a pair of locking pins are installed, which are composed of a standard coding pin and a prolonged standard locking countersunk that prevents the insertion of a key with a locking slot from Shallow This lock slot coding produces superior permutation capabilities. Also a horizontal lock slot, however, is still not difficult to copy.

The document WO 2004/048724 sought discloses a backward compatible locking system, of a non-generic type with blanks and reversible keys for the same and with only one coding row / squeeze with first skewers and first coding depressions, as ! as profiled grooves that form a cross-sectional profile for a cylinder profile and a second type of coding depression, which corresponds to a second type of skewer. The second skewer is not rotationally symmetrically configured, but guided in a forced and segmented manner with different conformations of two external and internal segments, the external segments of the second skewer corresponding to two additional slots in the second type coding location in the key. With the second type coding, an additional turning block with respect to the joint line can be caused.

However, with these blank parts, keys and cylinders of WO 2004/048724, the following objectives of the present invention cannot be achieved. In particular, WO 2004/048724 also does not contain any reference to an insertion lock in the key tip by means of a prolonged counter stroke.

Therefore, the objective of the present invention is to create a system with blanks, safety keys and associated cylinders that essentially improve the properties of known systems, especially the known lock code system according to EP 1 185 755 with additional security functions, with enhanced copy protection for key and blanks by means of a conformation, which is very difficult to define and copy, and which also enables superior permutacion capabilities. In addition, safe operation should be achieved through a long duration of use and insensitivity to wear and a rational and economical serial production should be possible.

Above all, the new conformation will not need any additional space in the key with several rows of coding. With only one kind of blank, a whole sector must be covered in the market and copies of unauthorized keys will be prevented through a locksmith service.

This objective is achieved in accordance with the invention by means of a blank according to claim 1, by means of a safety key for an associated cylinder according to claim 9, by means of a locking system with safety keys and associated cylinders. according to claim 15, as! as by a method for manufacturing said key from blank parts according to claim 16.

This new system of code of blockade of pieces in raw part for example of systems of code of previous blockade and additionally presents new characteristics, properties and functions with which the mentioned objectives are obtained, as it is shown additionally and it is also explained with the figures.

The known lock code system EP 1 185 755 on the other hand has a locking system with reversible safety keys for locking installations with at least three rows of coding / pins A1, A2, A3, which are also arranged on the sides planes of the key S, with associated cylinders Z with rows of pins of pairs of pins, which are composed of pins and countersunk in the positions of a given drilling plan, the key presenting a horizontal locking slot BN, which runs in parallel to the key axis x from the key tip to at least the first position P1 of a row of pins in the key and the locking slot has a locking depth B1, B2, B3 encoded, and in the associated cylinder at least in the more posterior coding position P1 is provided with a pair of pins that correspond to the BN lock slot with a standard pin as a BZ lock pin and a long counterattack as a counterattack BG lock so that the BG lock counter is mounted on the cylinder sleeve 10 when the lock groove is shallow and thereby inserting the entire insert of a key with lock groove

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shallow through the pair of pins, and the BZ lock pin with the BG lock counter is inserted after inserting the key in position P1 as well as coding pin with standard coding levels C1, C2, C3, C4 with respect to the rotation of the cylinder.

The new important properties of the code system for the blockage of blanks are among others: The new blank has two parallel lateral grooves and in between a central core. The lateral grooves run in an entry zone at a high level and in a first coding zone at a deep level. From the new blank the key is produced with deformations of a central groove in the entrance area and depressions of coding in the central core in the coding area. The side grooves of the blank and the central groove of the key result in a new blank component - lock code - groove. To the key is associated in the cylinder a new special skewer with lateral shoulders whose conformation corresponds to the lateral grooves and the central groove so that with the special skewer an additional insertion lock is formed in the entrance area and a rotation lock additional in the coding area. With this, the security of the locking system is essentially increased and counterfeit and unauthorized key copies are also prevented.

The new features are not deduced from the known system of EP 1 185 755: its simple BN horizontal lock slot corresponds to the standard coding pins and is not lowered and the BZ lock pin is a standard coding pin of the row of coding. Nor are they present: The two lateral grooves, from the high level lowered to a deep level; the central soul in the blank and in the key with coding depressions; the special skewer in the cylinder with the additional lateral shoulders, which correspond to the lateral grooves and the central groove in the key. The additional insertion lock and the additional rotation block are not possible according to EP 1 185 755.

The invention according to the independent claims enables different additional advantageous embodiments with further improvements and optimizations of the properties sought in accordance with the desired applications, for example with the following additional properties: with a widening of the RB slot; with a lowered core soul; with RB coding levels, which differ from the standard coding levels and / or with an additional secondary slot for rows of non-vertical pins.

The dependent claims refer to advantageous improvements of the invention, which enable additional advantages with respect to the security of a locking system, copy security of blank parts, keys and cylinders, with respect to their long service life, with respect to Your rational production and safe service as well! as a higher number of permutations.

Next, the invention is further explained by examples of embodiment and figures. In this case they show:

Figure 1

figure 1a figure 1b figure 1c figure 2 figure 2a figure 2b figure 3

figure 3a

figure 3b

figure 3c figure 3d figure 3e

figure 3f figure 4

figure 4a figure 4b figure 5 - 8 figure 5 figure 6 figure 7

schematically a blank according to the invention with two vertical lateral grooves and a central core and its levels,

- in the longitudinal section through the central plane of the row of skewers,

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

- in the coding area of the first coding position,

a blank with suitable internal walls of the lateral grooves,

- in the cross section through the entrance area,

- in the coding area,

a key according to the invention with two lateral grooves and a central groove in the central core area,

- in the longitudinal section, with lateral grooves, central core and central groove at a high level and a deep level,

- in the cross-section in the entrance area, with lateral grooves, central groove and special gachette associated with lateral shoulders, central part as! like a strawberry of coding,

- in the coding zone in a first coding position,

- in a second coding position,

- a standard coding pin of the coding row and a standard coding depression,

an example with a widened RB groove and a special widened RB skewer, a locking system according to the invention with a key with side grooves, central core and central groove and a cylinder associated with countergauge and special skewer with side shoulders,

- in the longitudinal section,

- in the cross section in the entrance area,

in the cross-section a key with a special skewer and a counter cylinder of an associated cylinder,

- in the entrance area with the entry blocking function,

- in the coding area with the turn lock function,

- in the coding area with a standard coding pin of the coding row,

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figure 8 figure 9 - 11

figure 9 figure 10 figure 11 figure 12 figure 13a

figure 13b

figure 13c figure 14a figure 14b

figure 15 figure 16

figures 17-19 figure 17 figure 18 figure 19a figure 19b

- in a first coding position a counterfeit key and the special cylinder lock, different levels of coding in a key and slot shapes in the entrance area and in the coding area,

- standard coding levels on a previous key with previous lock slot,

- standard coding levels in a new key with new combined RB slots, new RB coding levels,

an example of a widened RB slot with RB skewer,

in the cross section an example of a blank with an inclined coding row with lateral grooves, central core and a secondary groove,

A view of the blank ace! as mills for the manufacture of lateral grooves, central core and secondary groove,

a perspective view of the blank,

a perspective view of a coded key produced from the blank,

a cross section of the key with an associated space skewer and a standard skewer of

the coding row,

views of a key from above and in perspective with different encodings,

a manufacturing process for a blank and a key with milling cutters in stages

different,

an additional example of a blank and of the key with a particularly wide central groove, in the cross section the key with groove RB in the cylinder with associated pins, in the cross section a false key in the same place in the cylinder with the RB gazette, in perspective the blank with central core lowered, the key with five rows of coding and with codings.

Figures 1a-c schematically show a blank R according to the invention with two vertical lateral grooves RB-SN and a central core RB-M, which run at the entrance at a high level N1 and then lowered at a deep level N2 in parallel to the key axis x. In this case 7 indicates the surface and 5 the central plan of the blank and key. Figure 1a shows the blank in the longitudinal section through the central plane of a row of coding pins A with the coding levels C1-C4 for the standard coding pin Cod-ZH of this coding row A. The RB-SN side slots run in an RB-E input zone at the key tip at a high level N1. And at a deep level N2 in the coding zone RB-P of the first coding positions P1, P2, which correspond, for example, with the coding positions L1 and R5 of a left or right drilling plan. The central core RB-M can run continuously at the height of the key surface 7 and also be lowered.

In the simplest case, the central core RB-M runs continuously RB-M (1) and is formed only by the manufacture of the lowered lateral grooves (for example by a disk milling cutter). Depending on the application, the central core can also sink into the blank in the RB-P coding area: RB-M (2). With this, a simpler coding and a more rational manufacturing of the key can be achieved. Manufacturing procedures for this are described for example in Figures 13b and 16.

Figure 1b shows a cross-section through the entrance zone RB-E at the key tip with the high level N1 of the side slots.

Figure 1c shows in the coding zone RB-P the deepest level N2 of the lowered lateral grooves and also a central core recessed RB-M (2) (less intensely).

Figure 1c also shows the widths of the entire RB slot, side grooves and central core: bg, bn and bm (see figure 3d).

The blank R according to the invention for the manufacture of a safety key S with at least two coding rows / skewer Ai on the flat sides of the key for an associated cylinder Z with ZH pins and GZH countersunk has two slots parallel sides rB-SN and a central core RB-M between the lateral grooves, which are configured in parallel to the key axis x and symmetrically to the central plane of the coding row / gachette A. These RB-SN sides run in a zone RB-E input at the key tip at a high level N1 and in an RB-P coding zone of the first coding positions P1, P2 are lowered to a deeper level N2. The RB-SN side slots are suitably formed to match the additional RB-ZH-S side shoulders to an associated RB-ZH space skewer and to a cylinder RB-GZH extended counter hitch so that with the RB-SN side slots and the lateral shoulders RB-ZH-S can be made an additional insertion block in the RB-E input zone and an additional rotation block in the RB-P coding area.

Figures 2a, 2b show a blank R with adequate internal walls 11 of the lateral grooves RB-SN, which have an angle of inclination Wm with respect to the central plane of the coding row A (skeleton plane). This angle of inclination Wm can rise, for example, from 10 ° to 40 ° and allow variants of the shape of lateral grooves and be optimized according to the application. Figure 2a shows a corresponding conformation of the lateral grooves RB-SN in the input zone RB-E and Figure 2b in the coding area RB-P. Only the RB-SN side slots and the RB-M core are present in the blank. The compound

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of blank part-lock code-slot = RB-SN + RB-MN compound is not formed until with the coding and a code milling cutter by producing the central slot RB-MN in the key.

Figures 3a-d show a key according to the invention S with the two lateral grooves RB-SN and a central groove RB-MN, manufactured in the central core RB-M, or in its area. In the coding zone RB-P in this example the encoding position P1 is encoded with the coding level C1 and the coding position P2 with the coding level C2. Figure 3a shows a longitudinal section through the key S.

Figure 3b shows a cross section in the input zone RB-E with slot RB = RB-MN + RB-SN compound. This corresponds to an associated space skewer RB-ZH in the cylinder with additional lateral shoulders RB-ZH-S, which corresponds to the lateral grooves RB-SN of the S key. Additionally an encoding milling cutter 14 is shown for coding of Ci standard encodings (and also of the RB encodings) which corresponds to the shape of the Cod-ZH standard coding gachette. A locking slot BN produced (illegally) with it in the entrance area of a key will be blocked by the side shoulders RB-ZH-S of the Skewer RB (with the additional locking surface Fs, see Figures 5 and 10) .

Figure 3c shows a cross section in the coding area RB-P in the coding position P1 in this case with a deeper coding C1, in which the lateral grooves RB-SN are located at level N2.

The 3d figure shows in the coding position P2 an encoding C2 with the central slot RB-MN on the central core RB-M.

The width bn of the lateral grooves RB-SN and the width bm of the central core RB-M are adapted to each other. Together, the entire slot width bg = bm + 2 bn is produced.

These widths bn and bm can be for example in a range of bn = 20-33% and bm = 33-60% of the entire slot width bg.

Preferably t the width bm of the central core amounts to at least 33% of the entire groove width bg and the width bn of the lateral grooves amounts to at least 20% of the entire groove width bg.

Figure 3e shows a Cod-ZH standard coding pin and a Cod-V standard coding depression of coding row A.

The safety key S according to the invention with at least two rows of pins / coding Ai on the flat sides of the key for an associated cylinder Z with pins ZH and countersunk pins GZH has in a coding row A two parallel side slots RB -SN and a central groove RB-MN between the lateral grooves, which are configured in parallel to the key axis x and symmetrically to the central plane of a row of coding pins A, being configured in the area of the central groove RB-MN in a coding zone RB-P coding depressions in the first coding positions P1, P2. The key preferably has at least three or more rows of Ai coding. These RB-SN side slots run in an RB-E input zone at the key tip at a high level N1 and are lowered in an RB-P coding zone of the first coding positions P1, P2 at a deeper level N2 This creates additional permutations in the coding area.

The lateral grooves RB-SN are suitably formed to correspond to the additional lateral shoulders RB-ZH-S of an associated space skewer RB-ZH and a prolonged counterattack RB-GZH of the cylinder, so that with the lateral grooves RB- SN of the key and the side shoulders RB-ZH-S of the Skewer RB-ZH can be made an additional insertion block in the entrance area RB-E or an additional rotation block in the coding area RB-P. The additional central RB-MN slot in the RB-E input zone and the P1, P2 encodings in the RB-P coding area can be manufactured in the central core zone RB-M. Corresponding to the first coding positions P1, P2 on the key, the special Skewer RB-ZH must be arranged in the most posterior position of the row of Skewers A in the cylinder.

Figure 3f shows a further example of a key S (2) with a widening of the slot RB: RB-N (2) with respect to the standard coding of the coding row A: The width bg (2) of the slot RB (with RB-SN side slots and RB-M center core or RB-MN center slot) on both sides is greater by a quantity bb than the width bcv of the Cod-V coding depressions of the coding row A: bg ( 2) = bcv + 2 bb (see figures 12 and 17). With this widening, in particular for gachettes and cylindrical encodings, further improvements in properties such as safety in operation, security against counterfeiting and useful life can be achieved.

Figures 4a, b show in the longitudinal section and in the cross section a locking system according to the invention with a key S with lateral grooves RB-SN, a central core recessed RB-M (2) and a central groove RB- MN as! as with an associated Z cylinder with an extended RB-GZH countersunk and a special RB-ZH skewer with the RB-ZH-S side shoulders. These pins cause an insertion lock for false keys in the entrance zone RB-E: once through the central part RB-ZH-M and additionally by means of the side shoulders RB-ZH-S of the keyhole RB-ZH. In the case of false keys, which have a central groove with insufficient depth or lateral grooves, then the extended countersunk RB-GZH rises in the cylinder sleeve 10 and thereby prevents the complete insertion of the false key.

Analogously in the RB-P coding zone in the case of inconvenient coding forms and coding depths of a false key, a rotation lock is exerted when the shoulders are then placed

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RB-ZH-S sides and / or the central part RB-M of the special Skewer RB-ZH in a false coding depression and thus reaching the Skewer RB-ZH to the junction line 9 and thereby prevents rotation of the key.

The locking system according to the invention with safety keys S with at least two row of pins / coding Ai on the flat sides of the key and with associated cylinders Z with ZH pins and GZH lockers features S keys with two parallel side slots RB-SN and a central slot RB-MN in a coding row A that are configured in parallel to the key axis x and symmetrically to the central plane of the row of pins A, with coding depressions in the area of the central slot RB- MN in the first coding positions P1, P2. These RB-SN side slots run in an RB-E input zone at the key tip at a high level N1 and in an RB-P coding zone of the first coding positions P1, P2 are lowered to a deeper level N2 The associated cylinders Z have in the more posterior coding position P1, P2 of the cylinder a special RB-ZH skewer with additional lateral shoulders RB-ZH-S. These side shoulders RB-ZH-S of the Skewer RB-ZH are formed in such a way that they correspond to the lateral grooves RB-SN of the key, the length ls of Skewer RB-ZH corresponding to the entrance area RB-E and countersunk RB-GZH to the side shoulder RB-ZH-S with the distance ds of cylinder sleeve 10 to the side groove RB-SN and in a first coding position P1, P2 corresponding the length lz of the skewer RB-ZH to the lateral shoulder rB-ZH-S with the distance dz from the union line 9 to the lateral groove RB-SN, with a tolerance zone to, so that with the lateral grooves RB-SN of the key and the lateral shoulders RB-ZH-S of the associated special skewer RB-ZH can be made an additional insertion block in the RB-E input zone and an additional rotation block in the RB-P coding area, rising in the case of absence of or shallow RB-SN side slots in the inlet zone the RB-GZH countersunk in the sleeve or of cylinder 10 (insertion lock) and the special Skewer RB-ZH reaching the junction line 9 (turn lock) in the coding area.

Figures 5-8 further illustrate, for example, the functions of the new blank-block code system and show in the cross section a key as well as a special RB-ZH and a RB-GZH countersunk of an associated cylinder.

Figure 5 illustrates the entry blocking function in the RB-E input zone. The pair of Skewers RB-ZH + RB-GZH has a length ls to the side shoulder RB-ZH-S and ds indicates in this case the distance from the cylinder sleeve 10 to the side grooves RB-SN. The length ls plus a small tolerance zone to (for example 0.05 - 0.1 mm) corresponds to the distance ds and thus allows the insertion of the key, while in the case of a false key with absence of or combined slots Shallow RB-MN and RB-SN the pair of Skewers RB-ZH + RB-GZH would rise in the cylinder sleeve 10 and thereby prevent the insertion of a false key (see Figure 4a).

Figure 6 illustrates the spin lock function in the RB-P coding zone. With RB-MN and RB-SN grooves correctly coded in which also the length lz of the associated skewer RB-ZH to the shoulders RB-ZH-S is not greater than the distance dz from the joint line 9 to the lateral grooves RB-SN at level N2, the key can be turned. Otherwise not - as illustrated in Figure 8.

Figure 7 shows in a coding position P1, P2 a standard coding pin Cod-ZH (above) of the row of skewers A instead of the special skewer RB-ZH, which can also correspond to the junction line 9. However, in accordance with the invention, the special Skewer RB-ZH is inserted and not a standard coding Skewer of this row of Skewers A as in the case of the previous lock code according to EP 1 185755.

Figure 8 shows in a first coding position P1, P2 a false key Sb (forged) in which in a standard coding depression Cod-V the coding depth C1 in the RB-MN zone (suitable for a Cod-ZH standard coding gazette above according to figure 7). Then, however, the special Skewer RB-ZH would rise with the lateral shoulders RB-ZH-S at the Cod-V coding depression and therefore reach the junction line 9 (at a closed distance) and prevent turn. This additional turning block, by means of the RB-ZH pins at the coding levels in the RB-P coding zone of a false key Sb, is also illustrated in Figures 9 and 10.

Figures 9-11 show in a key different levels of Ci coding and slot shapes in the input zone and in the first coding positions as well as a comparison of previous blocking slots (BN) with new RB slots. In comparison with the locking surface of the previous blocking groove (BN) in the entrance area the blocking surface of a blank-block code groove rB = RB-MN + RB-SN composed has the same size and The blocking effect is wider and less deep. This facilitates a greater coding depth zone (for example, more coding levels) up to the deeper C1 coding level for coding the positions P1, P2. Or the blocking surface and the blocking effect of the new RB slot are correspondingly larger with the same depth, as in the previous blocking slot (BN), in the RB-E input zone.

The distance dN between level N1 and N2 must amount to at least one level of coding dC. Preferably N2 corresponds to the deepest coding level, in this case C1 in Figures 10 and 11.

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Figure 9 shows standard coding levels C1-C4 in a previous key or in a counterfeit key Sb with an anterior locking slot BN with a depth B2, which is below the level of coding C3. For the coding of the coding positions P1, P2 there are therefore only two levels: C1 and C2.

Figure 10 shows a new slot RB with a locking surface Fs of the same size as in Figure 9 and of less depth = at the height of coding level C3. For coding P1, P2 there are therefore three levels: C1, C2, C3.

Figure 11 shows a new slot RB with the same depth (B2) as that of the previous locking slot BN of Figure 9 and with essentially larger blocking surface Fs and blocking effect. Also in this case the RB C2 * and C3 * coding levels could be placed somewhat deeper than the standard C2, C3 coding levels, so that three levels are also possible for the coding of P1, P2: C1, C2 *, C3 *. The coding levels RB Ci * in the coding zone may be located higher or deeper than the standard coding levels Ci of the coding row A for the standard Cod-ZH bogs with another corresponding length of the associated special bog RB -ZH.

Preferably at least one level of Ci * RB coding cannot correspond to a standard level of Ci coding. The number of possible permutations and the security against counterfeiting can be increased in this way essentially with the new RB slots.

A previous key or a counterfeit Sb with an anterior locking slot BN in the RB input zone and with current standard coding depressions (generated by a code milling cutter 14) will be blocked by the special Skewer RB-ZH (corresponding to RB slot)

- in the entrance area RB-E in front of an insertion (by means of additional locking surfaces Fs)

- and in the coding positions P1, P2 in the coding zone at all coding levels C1, C2, C3 against the turn,

also when the depths in the entry zone and in the coding positions were the same as in the correct key S with slot RB and codings RB, as illustrated in Figures 6, 8, 9 and 10.

Said copy of a fake or unauthorized key (Sb), which is copied by a locksmith service by means of a code milling cutter with the same parts in the entry area and in the coding positions P1, P2 that the original key will crash with an insert lock and a turn lock.

Figure 12 shows a further example of a grooved RB slot with Skewer RB compared to the standard Cod-ZH coding pins and Cod-V coding depressions of the coding row A with cylindrical pins. In addition to the broadening bb in this case, the distance at which the RB RB-ZH gazette reaches the Cod-V coding depressions on both sides is also shown: brz (2) = bcv + 2 ba (see also figures 3e, 3f and 18).

Figures 13 and 14 show a further example of a blank and key according to the invention, in this case presenting the row of skewers A at an inclination angle Wa of 15 ° with respect to the z direction.

Figures 13a, b, c show different views of the blank R with the new recessed lateral grooves RB-SN and the central core RB-M as! as with an additional secondary slot RB-nn.

Figure 13a shows in the cross section the angle of inclination Wa of the row of pins A, the lateral grooves RB-SN, the central core RB-M and the secondary groove RB-nn in the entrance zone RB-E as! as in the RB-P coding zone. Figure 13b shows a top view of the rotated blank 15 (therefore in the direction of the skewer plane A). This figure also illustrates a rational advantageous manufacturing of a blank, as a lowered core RB-M (2) can be manufactured initially in the RB-P coding area by means of a cylindrical cutter 15 and then the RB-SN side grooves in the input zone RB-E at a level N1 and in the coding area RB-P at a level N2 by means of a cutter 16. In this example with internal walls 11 perpendicular to the lateral grooves RB-SN, for example by means of a cutter cylindrical 16; for internal walls 11 inclined by a conical cutter (see example figure 2a, b).

Figure 13c shows the blank in a perspective view.

Preferably, in the case of a blank or a key with an inclined skewer plane A with an inclination angle Wa> 0 on the inner side an additional secondary groove RB-nn can be attached to the lateral groove RB-SN secondary groove which it forms a support surface orthogonal to the coding plane-Skewer A. With this, the entry of a zero Skewer can be made possible or optimized, for example. Said zero skewer consists only of an upper part with width b0 without lower coding part as illustrated in Figure 14b.

In the process according to the invention for the manufacture of a key S from a blank R by means of a coding on the blank R by detaching the central core RB-M a

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central slot RB-MN in the RB-E input zone and Cod-V coding depressions in the first coding positions P1, P2 in the RB-P coding zone. In this case, initially, the RB-SN lateral grooves are produced at a high level N1 and lowered to a deeper level N2 with the central core RB.

Then the second part RB-MN of the combined slot RB = RB-SN + RB-MN and the coding in the central core RB-M of the key are produced. This enables enhanced copy protection and additional security features. A blank with an unbalanced central core RB-M can be manufactured, for example, simply by producing the lowered grooves RB-SN by means of a disk mill.

Preferably, the RB-M central core (2) in the coding area (RB-P) can be initially manufactured by means of a first mill in the blank, and then the RB-SN lateral grooves in the area of a second mill input (RB-E) at a high level (N1) and in the coding zone (RB-P) at a deeper level (N2).

Figures 14a, b show an encoded S key produced from the blank with four rows of coding A1 to A4. Figure 14a shows a perspective view of the key with a coding level C1 in the coding position P1 and a coding level C2 in the coding position P2 in the coding zone RB-P, which are installed in the core central RB-M.

Figure 14b shows a cross-section of the key with an associated space skewer RB-ZH in an encoding position in the RB-P coding zone and a standard Cod-ZH as! as a standard Cod-V coding depression of the same A coding row (ie from position P3).

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

Figure 16 shows a manufacturing process of a blank and a key with a skew plane A inclined with strawberries in different stages:

In a first stage a by means of a first milling cutter 15 of a central core recessed RB-M (2) in the coding zone RB-P and in stage b milling of a secondary groove RB-nn, then by a second milling cutter 16 in stage c milling of the two lateral grooves RB-SN and later in stage d by means of a milling cutter 14 milling of the central groove RB-MN and of the coding depressions both in the coding area RB-P ( P1, P2) as in the coding positions P3, P4 additional etc. of the standard encodings of the coding row A.

The core core RB-M (2) preferably sinks to the highest level of coding at maximum - in this case at most C2 *. (In figure 10 at most up to C3, in figure 11 at most up to C3 *)

Figures 17-19 show a further example of realization of a blank and of a key according to the invention with a row of Skewers A vertical in a cylinder. In this case, an especially wide RB-MN central groove with a bmn width is provided, for example, for particularly suitable guiding of the skewers through the central groove, with minimal wear.

Figure 17 shows in the cross section the key with slot RB in the cylinder and with associated pins of the coding row A1. The special Skewer RB-ZH is placed in the deepest coding position, for example P1: C1, so that the correct key can be turned in the connection line 9. The widening of the slot Rb with respect to the standard codings Cod -V of the same coding row A1 amounts to: 2 bb = bg (2) - bcv.

Figure 18 shows in the cross section a false key Sb in the same place in the cylinder with a Skewer RB, the false key Sb presenting instead of the widened grooves RB RB-SN and RB-MN a Cod-V standard coding. In this case, the Skewer RB is already raised on the key surface 7 and therefore locks in the connection line 9 against rotation. This, also when in this case the brz width of the RB-ZH skewer is only slightly larger (ba) than the bcv width of the Cod-V standard coding depth with 2 ba = brz - bcv. Since the spring of the counterattack (see Figure 4a) cannot press the Skewer RB-ZH violently in the too narrow depression Cod-V. In contrast to the coding row A1 with cylindrical pins RB-ZH and Cod-ZH in Figure 17, the key also presents in this case an additional coding row A2 with conical cod-V2 pins and depressions.

Figures 19a, b show in perspective the blank R and the key S with (at least) five rows of coding A1-A5 and with encodings.

Figure 19a shows the blank R with the lateral grooves RB-SN and the central core RB-M in the input zone RB-E and lowered in the coding area RB-P for the coding positions P1, P2.

Figure 19b shows a coded S key, produced from the blank, with the

5

10

fifteen

twenty

25

30

35

40

Four. Five

fifty

55

60

65

conformation RB in the row of vertical A1 skewers (Wa = 0 °). In the RB-P coding zone, the key in this case presents the following encodings in the RB-M central core:

- in the coding position P1 the coding level C2

- and in the coding position P2 the coding level C1.

Within the framework of this description the following denominations are used:

X and Z

R

S

Sb

Z

Pi

Ri, Li A

Ci, Ci *

RB

RB-SN

RB-M

RB-MN

RB-N

RB-nn

Cod-V

Cod-ZH

Cod-ZH-M

RB-ZH

RB-GZH

RB-ZH + RB-GZH RB-ZH-S RB- ZH-M Fs

RB-E

RB-P

Ls

Ds

Lz

To

dz

dN

to

dc

bm

bn

bg

bnn

bg (1)

bg (2)

brz

bcv

bcz

bb

ba

bmn

b0

Wm

Wa

5

7

9

10 11 14

15, 16

spatial directions key blank

cylinder front wrench

coding positions

coding positions right left

row of lobsters, coding (center plane)

coding level, coding

(function) of blank part lock code

RB side slots

core soul RB

central slot in S

composite RB slot = RB-SN + RB-MN or RB-SN + RB-M

secondary slot

coding depression

coding gazette (standard)

central part coding gachette (track part)

special brooch RB

RB-

pair of Skewers RB

side shoulder ZH

central part ZH (coding track part) additional locking surface entrance area

position more forward coding area (P1, P2 ...)

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

distance from 10 to RB-SN

length of RB-ZH to RB-ZH-S

tolerance zone

distance from 9 to RB-SN

distance of N1 from N2

recess distance

a coding level

RB-M width

RB-SN width

RB-N width = RB-SN + RB-M

RB-nn width

= bcv

= bcv + 2 bb width of RB-ZH width of Cod-V width of Cod-ZH

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

brz - bcv = 2 ba

RB-MN width

upper width of ZH

tilt angle of 11

angle of inclination of A

central plane of S

S surface

union line in Z

cylinder sleeve

internal walls of RB-SN

strawberry coding

raw piece strawberry

Claims (18)

5 10 fifteen twenty 25 30 35 40 Four. Five fifty 55 60 65 1. Rough part (R) for the manufacture of a reversible safety key with at least two coding rows / skewer (Ai) on the flat sides of the key for an associated cylinder (Z) with skewers (ZH) and countersunk (GZH) of a closure system with an insertion lock that acts by means of a prolonged counterattack, characterized by - two parallel lateral grooves (RB-SN) and a central core (RB-M) between the lateral grooves, which are configured in parallel to the key axis (x) and symmetrically to the central plane of a coding row / Skewer (A ), - extending the lateral grooves (RB-SN) and the central core (RB-M) starting from the key point to a coding zone (RB-P) of the first coding positions (P1, P2), - and the lateral grooves (RB-SN) running in an input zone (RB-E) at the high end (N1) and in the coding area (RB-P) of the first coding positions (P1, P2) lowered to a deeper level (N2), - the lateral grooves (RB-SN) being formed in an appropriate manner to correspond to an additional lateral shoulder (RB-ZH-S), configured in the longitudinal and transverse directions with respect to the key axis (x), of a skewer ( RB-ZH) associated cylindrical special and of a prolonged counterattack (RB-GZH) in the most posterior coding position (P1, P2) of the cylinder, - so that with the lateral grooves (RB-SN) of the blank and the lateral shoulders (RB-ZH-S) of the associated special skewer, an additional insertion lock can be made that acts by means of the prolonged countersunk (RB- GZH) in the input zone (RB-E) and an additional turn lock in the coding zone (RB-P). 2. A blank according to claim 1, characterized in that the central core (RB-M) in the coding area (RB-P) is lowered (RB-M (2)). 3. The blank according to claims 1 or 2, characterized in that the total width (bg (2)) of lateral grooves (RB-SN) and central core (RB-M) on both sides is greater by an amount (bb ) than the width (bcv) of the coding depressions (Cod-V) of the coding row (A). 4. The blank according to one of the preceding claims, characterized in that the width (bm) of the central core (RB-M) amounts to at least 33% of the entire groove width (bg). 5. The blank according to one of the preceding claims, characterized in that the width (bn) of a lateral groove (RB-SN) amounts to at least 20% of the entire groove width (bg). 6. The blank according to one of the preceding claims, characterized in that the internal walls (11) of the lateral grooves (RB-SN) are inclined at an angle (Wm) with respect to the skewer plane (A). 7. The blank according to claim 6, characterized in that the angle (Wm) amounts to 10 ° to 40 °. A blank according to one of the preceding claims, characterized in that in the case of an inclined skewer plane (A) with an inclination angle (Wa) greater than 0 on the inner side, an additional secondary groove (RB- nn) joins the lateral groove (RB-SN), a secondary groove that forms a support surface orthogonal to the coding-gachette plane (A). 9. Security key (S) with at least two rows of coding / skewer (Ai) on the flat sides of the key for an associated cylinder (Z) with pins (ZH) and countersunk (GZH) of a locking system with an insertion lock that acts by means of a prolonged counterattack, characterized by - two parallel lateral grooves (RB-SN), a central groove (RB-MN) and a central core (RB-M) between the lateral grooves, which are configured parallel to the key axis (x) and symmetrically to the central plane of a coding row / gachette (A), - extending the lateral grooves (RB-SN) and the central groove (RB-MN) or the central core (RB-M) starting from the key tip to a coding area (RB-P) of the first coding positions (P1, P2), being configured in the zone of the central slot (RB-MN) in the coding area (RB-P) coding depressions in the first coding positions (P1, P2) - and the lateral grooves (RB-SN) running in an input zone (RB-E) at the high end (N1) and in the coding area (RB-P) of the first coding positions (P1, P2) lowered to a deeper level (N2), - the lateral grooves (RB-SN) being formed in an appropriate manner, to correspond to an additional lateral shoulder (RB-ZH-S), configured in the longitudinal and transverse directions with respect to the key axis (x), of a skewer associated cylindrical special (RB-ZH) and of a prolonged counterattack (RB-GZH) in the most posterior coding position (P1, P2) of the cylinder, - so that with the side slots (RB-SN) of the key and the side shoulders (RB-ZH-S) of the skewer 5 10 fifteen twenty 25 30 35 40 Four. Five fifty 55 Special associated (RB-ZH) can be made an additional insertion lock that acts by means of the prolonged counterattack (RB-GZH in the entrance area (RB-E) and an additional rotation block in the coding area (RB-P) . 10. Key according to claim 9, characterized in that the coding depressions of the first coding positions (P1, P2) are configured in a lowered core core (RB-M (2)). 11. Wrench according to claims 9 or 10, characterized in that the total width (bg (2)) of lateral grooves (RB-SN) and central groove (RB-MN) on both sides is greater in an amount (bb) than the width (bcv) of the coding depressions (Cod-V) of the coding row (A). 12. Wrench according to one of claims 9 to 11, characterized in that in the case of an inclined skewer plane (A) with an inclination angle (Wa) greater than 0 on the inner side, an additional secondary groove (RB-nn) it joins the lateral groove (RB-SN), a secondary groove that forms an orthogonal support surface with respect to the skewer plane (A). 13. A key according to one of claims 9 to 12, characterized in that the coding levels RB (Ci *) in the coding zone (RB-P) are located higher or deeper than the standard coding levels (Ci) of the coding row (A) with another corresponding length of the associated skewer (RB-ZH). 14. A key according to one of claims 9 to 13, characterized in that the distance (dN) between the high level (N1) and the deepest level (N2) amounts to at least one coding level (dC). 15. Locking system with safety keys (S) with at least two rows of coding / skewer (Ai) on the flat sides of the key and with associated cylinders (Z) with pins (ZH) and countersunk (GZH) and with an insertion lock that acts by means of a prolonged counterattack, characterized by - key (S) according to claim 9 - and by associated cylinders (Z) with a special cylindrical skewer (RB-ZH) in the most posterior coding position (P1, P2) of the cylinder, which has an additional lateral shoulder (RB-ZH-S), configured in the longitudinal and transverse directions with respect to the key axis (x), - these lateral shoulders (RB-ZH-S) of the special skewer (RB-ZH) being formed so that they correspond to the lateral grooves (RB-SN) of the key - and the length (ls) of the special gachette (RB-ZH) and of a prolonged counterattack (RB-GZH) to the lateral shoulder (RB-ZH-S) with the distance corresponding to the distance in the entrance area (RB-E) (ds) of cylinder sleeve (10) to the side groove (RB-SN) - and in a first coding position (P1, P2) corresponding the length (lz) of the special skewer (RB-ZH) to the lateral shoulder (RB-ZH-S) with the distance (dz) of the joint line ( 9) to the side groove (RB-SN), with a tolerance zone (to), - so that with the side grooves (RB-SN) of the key and the side shoulders (RB-ZH-S) of the associated special skewer (RB-ZH) an additional insert lock can be made that acts by means of the prolonged counterattack (RB-GZH) in the input zone (RB-E) and an additional turn lock in the coding zone (RB-P). 16. Method for the manufacture of a key (S) according to one of claims 9 to 14 from a blank (R) according to one of claims 1 to 8 by means of coding, characterized in that in the blank (R) a central groove (RB-Mn) in the input zone (RB-E) and coding depressions (Cod-V) in the first coding positions (P1) are produced by detachment of the central core (RB-M) , P2) in the coding zone (RB-P). 17. Method according to claim 16, characterized in that a recessed core core (RB-M (2)) is initially manufactured by means of a first mill in the coding area (RB-P) and then by a second mill the side slots (RB-SN) in the input zone (RB-E) at a high level (N1) and in the coding zone (RB-P) at a deeper level (N2). 18. Method according to claim 17, characterized in that in the case of the blank in the case of an inclined skewer plane (A) with an inclination angle (Wa)> 0, the lowered core (RB) is initially manufactured by means of a first milling cutter -M (2)) and an additional secondary slot (RB-nn).