EP1922461A1

EP1922461A1 - Lock device with a lock cylinder and a key

Info

Publication number: EP1922461A1
Application number: EP06776818A
Authority: EP
Inventors: Ulrich Mueller; Matthias Habecke; Dirk Jacob
Original assignee: Huf Huelsbeck and Fuerst GmbH and Co KG
Current assignee: Huf Huelsbeck and Fuerst GmbH and Co KG
Priority date: 2005-09-07
Filing date: 2006-08-12
Publication date: 2008-05-21
Anticipated expiration: 2026-08-12
Also published as: DE502006006268D1; EP1922461B1; CN101305146B; US7870771B2; ATE458886T1; CN101305146A; US20090266123A1; DE102005042618A1; WO2007028483A1

Abstract

A lock device having a key and a lock cylinder. The lock cylinder includes a fixed cylinder housing and a cylinder core mounted to rotate therein. The key shaft (10.3) has an edge profile and may be inserted in a key way of the cylinder core in which displaceable tumblers (41, 42) are located transverse to the above. The key shaft (10.3) has profiled recesses running in the longitudinal direction. The recesses have a pair of follow points for each tumbler (41, 42) for coding the key, whilst the tumbler (41. 42) has a pair of counter follow points which are the basis of the corresponding counter coding. A space-saving design of the lock device is achieved with a large range of variation for the coding wherein both follow points are on the key shaft (10.3) in the form of recesses, arranged on opposing lateral surfaces to an edge (57.2; 57.3) of the edge profile of the key shaft (10.3). A web (22: 23) is thus generated in the corner region of the edge profile between both recesses. The web functions as a code web (22; 23), as the opposing web edges serve for the coding. The corresponding tumblers (41, 42) have a cut-out, which in use enclose the code web (22; 23) on opposing web edges. The lateral limits of the cut-out form the counter follow points in the tumblers (41, 42).

Description

Locking device with a Schließzvlinder and with a key

The invention is directed to a locking device specified in the preamble of claim 1. Art Such a closure device is known from DE 199 44 070 C2. There, the coding of the key consists of a key in the longitudinal direction extending coding groove. As sampling the associated tumblers have a projection which engages inserted key in a certain cross-section of the coding groove. The position of the projection on the tumbler depends on the coding of the groove and thus forms the corresponding counter-coding of the locking device.

From EP 0 267 316 Al another locking device is known, where the key has a polygonal shaft cross-section. For coding notches of different depths are embedded at the edges of the key shaft. Spring-loaded tumbler pins engage the edges of the shank cross-section and sense the depth of the notches in the corner areas of the key shank. At the top of the key shaft bevels are provided in the side surfaces between the edges, which serve to lift the tumbler pins when inserting the key.

The invention has for its object to find a reliable locking device with a new coding option. An important objective of coding is it. To develop a key with a small cross-section, which is characterized by a high variety of variations of the codes. The The object is achieved by the measures mentioned in claim 1, which have the following special significance.

The invention provides the coding in the corner regions of the edge profile of the key shaft. The scanning point pair is generated by two mutually opposite directions in adjacent side surfaces of the edge profile introduced recesses. Between the two angular cutouts a web remains in the corner area of the edge profile. In successive axial sections of the code web, opposite web flanks are offset in pairs and generate the scanning shaft pair of the key shaft thus used for coding. Because of this, the web of the code web is determined by the corner area in the edge profile, because the code web with its two web flanks can, if necessary, also extend beyond the edge in the canted profile of the key shaft, resulting in a small key cross section Because the two web flanks are encompassed by the lateral boundaries of a cutout in the tumblers, there is a forced guidance This positive guidance has an advantage in closing devices in which the key is only a large variation in the arrangement of the two coding edges In the case of an emergency key, the tumblers in the cylinder core can become sluggish or stick together due to long unused use Male control of the locking device by an electric remote control or by a smart card.

Because the edge profile of the key shaft usually has multiple edges. e.g. is designed as a square, an inventive code web can be arranged in each of the corner regions. At least some of these code webs may have mutually different coding in order to achieve a wide variety of variations in the closing device according to the invention.

In addition, the security against breakage is increased because the tumblers with their counter-scanning points on different code lines attack and therefore in mutually different directions are displaceable in the cylinder core. This makes it difficult for unauthorized persons to keep track of it. as the

Locking device is break open. In addition, the use of so-called picking tools for decrypting the code is more difficult.

In the drawings, the invention is explained with reference to several embodiments. Show it:

Fig. L a + l b. in a perspective view, a first and a second embodiment of the key-shaft according to the invention,

Fig. 2. schematically, an enlarged corner region of the key shank shown in Figs. I a or I b, where variants for forming a code web are illustrated. before execution of the necessary recesses.

Fig. 3 shows a concrete cross section through the key shaft with a sampling point pair on both sides of the code bar.

Fig. 4 is an analogous to Fig. 3 cross-section through the

Locking device, where in addition to a coding on the code web and the corresponding counter-coding are shown on an associated guard,

Fig. 5a, 5b are the plan views of two embodiments of a concrete tumbler, the particular sampling pair in the key of Fig. Ia. Ib is assigned,

6 shows a perspective view of a third exemplary embodiment of a key shaft according to the invention with two tumblers which act on two mutually different code webs, Fig. 7a + 7b. in enlargement, two cross-sections through the key shaft shown in Fig. 6 along the sectional planes there VIIa - VIIa or VIIb - VIIb. ₅

Fig. 7c shows a cross section through a complete inventive

Locking device with a lock cylinder and key shaft,

8 is a plan view of the already shown in Fig. 6 key

Shank and

9+ 10 are two cross-sections through the key shaft of Fig. 8 taken along the sectional planes IX-IX and X-X.

In Fig. 1, a first embodiment 10.1 of a key shaft is shown, which has a cantilever 17. This edge profile 17 is designed here as a square and has only one code web 21 in the region of one edge 57.1. In the perspective view, two side surfaces 1 1, 12 can be seen. The square profile has mutually different edge dimensions. because the width 18 is greater than the profile height 19 is formed.

Fig. I b shows a second embodiment 10.2 of a key shaft whose edge profile 17 is also a square, but here all the corner regions 30.1 to 30.4 are each provided with code strings 21 to 24, of which three 21, 22 and 23 can be seen. The formation of such code webs will be explained in more detail with reference to FIGS. 2 and 3.

In Fig. 2 is. omitting the hatching, the cross section of a corner region 30.1 shown, which results between two flat side surfaces 1 1. 12 of the key shaft 10.2. As illustrated in FIG. 3 by dot-hatching, a recess 31, 32 is cut in each of the two side surfaces 11, 12, which recess is formed angularly in the present case. The two recesses should therefore be referred to as Winkelausnehmungen 31, 32. The angular recesses 3 1. 32 have mutually facing angle leg 34. between which a web 21 remains. The web edges 25.1 formed by the two angle legs 34. 26.1 act as a sample point pair 15 16 of the key shaft 10.2. whose lateral position serves as a code. Therefore, the web 21 can be referred to as "codesteg." In the exemplary embodiment of FIGS. 2 and 3, the angular recesses 31, 32 are formed at right angles.

The above-described keys 10.1. 10.2 are part of a closing device to which also a lock cylinder 50 recognizable from FIG. 7c belongs. Fig. 7c shows a cross section through such a lock cylinder, which consists of a stationary cylinder housing 51 and a cylinder core 52 rotatably mounted therein. The cylinder core 52 is provided with a keyway 53, in which in Fig. 7c, a third embodiment 10.3 of a key shaft according to the invention is inserted. which will be described in more detail in connection with FIGS. 6 to 10. The cylinder core 52 has chambers in which spring-loaded tumblers 21 are movable transversely to the key axis 27. Springs 54 engage a nose 38 of the respective tumbler 41. The linear movement of the tumblers 41 is illustrated by a double arrow 47.1 in FIG. 7c. If the key shaft 10.3 were not plugged in, the springs 54 would insert the tumblers into locking channels 55.1 or 55.2 and thereby fix the cylinder core 52 non-rotatably in the cylinder housing 5 1. In the illustrated embodiment of Fig. 7c, the cylinder housing 51 has two more locking channels 56.1 and 56.2, which serve with the key pulled out for the entry of the ends of a right angle to the illustrated tumbler 41 serving further tumbler 42. This will be described in more detail in FIGS. 6 and 7a.

How such a tumbler 41 cooperates with the inserted key shaft 10.2 is shown in more detail in FIG. The aforementioned scanning point pair 1 5. 16 on both sides of the code web 21, a pair of counter-scanning points 45, 46 of the tumbler 41 attacks. which form a corresponding counter-coding. This is done by a cutout 40 in the tumbler, in which the codesteg 21 engages when the key is inserted. The double-sided cut-out boundaries 43, 44 of FIG. 40 generate the two counter-scanning locations 45, 46. As can be seen in Fig. 5a, the tumbler 41 is platelet-shaped and has a central opening 39. The inserted key is penetrated by the key shaft. The cutout 40 adjoins this central opening 39 laterally and points in the direction of the lateral nose 38 already described in connection with FIG. 7c, on which the spring 54 acts.

Fig. 5b shows an alternative tumbler 41 ^; to lock 41 of Fig. 5a. The difference is that at certain edges of the plate-shaped tumbler there are folds which produce different bevels 48.1 to 48.5 there. Thus, bevels 48.1, 48.2 are initially provided at the two cutout boundaries 43, 44 already described. These chamfers 48.1, 48.2 provide for the insertion of the key in the keyway 53 of Fig. 7c for a better threading through the shaft.

If unauthorized persons want to determine which coding is present for a given lock cylinder, they are based on the position of the cutout boundaries 43, 44, which, as stated, in the tumbler 41 'with a chamfer 48.1. 48.2 are provided. In order to make the decryption by unauthorized persons more difficult, a "veiling" of the coding can take place by making even more bends in 48.3 to 48.5 Between the two cut-out delimitations 43, 44 there is a connection 40.1 whose edge also coincides Finally, in Fig. 5b, the opening 39 in the transition to the cutout 40 is provided with edges 49.2 and 49.3, the edges of which can also be provided with chamfers 48.4 and 48.5, respectively.

3 shows only an example of the position of a code 28.3 of the code web 21. In the longitudinal direction of the key shaft 10.3, there are a plurality of further scanning points, which are designated in FIG. 3 with 29.1 to 29.10. To vary the coding, of course, the two web flanks are offset in relation to FIG. 3 in successive sections of the respective code webs 21 to 24. This results in the first code ridge 21 im emphasized in FIG. 8 by coarse dot hatching there key-shaft 10.3. The possible variety of variation of the web flanks is illustrated in FIG. 2 by dashed-dotted lines 25.1 to 25.5 and 26.1 to 26.5.

In Fig. 2, five different codes 28.1 to 28.5 are provided, in which the position of the associated web edge pair 25. 1, 26.1 to 25.5, 26.5 can vary. In this case, the associated code bar over the entire axial length of the key shaft 10.2 has a substantially constant ridge width 20. Only at large increments, which are adjacent to each other, will form the code ridge in places with different ridge width. Already Fig. 2 shows a possible extreme position of a scanning edge pair 28.1. where both associated web flanks 25.1, 26.1 go beyond the local edge 57.1 in the square profile 17 there.

Similar extreme sampling pairs are also present in FIG. 8 in the code bar 24 of the local key shaft 30.3. There are ten axially spaced Abstaststellen 29. 1 to 29.10 are provided. In Fig. 8, the edge 57.1 of the square profile \ T is replaced at those points by a dashed line, where the edge 57.1 is exceeded by the code web 21. It can be seen that this is e.g. happens at the sampling points 29.3 and 29.9.

As is apparent from Fig. 3 and 4, the mutually facing angle leg 34 of the code web 21 arranged on both sides Winkelausnehmungen perpendicular to the direction of movement 47.1 of the local tumbler 41. In addition, the two code webs 21 are arranged parallel to each other. It would of course be conceivable to arrange these angle legs 34 also inclined to the direction of movement 47.1. Then the web 21 would have a trapezoidal cross-section. In addition, in Fig. 3 and 4, the angle leg 34 formed in a straight line. An alternative would be to make them curved and run convex or concave.

According to FIG. 4, the other angle leg 35 of FIG. 3 runs essentially parallel to the direction of movement 47.1 of the associated tumbler 41. The two angle legs 34, 35 join one another at an apex angle. which, in the present case, as already mentioned, is formed at right angles. These further angle leg 35 extend, as shown in FIG. 2, in a common base plane 36. This base plane 36 intersects the corner region 30.1 obliquely. Alternatively, it would also be possible, at least in places, to arrange the angle legs 35, which are located on both sides of a code web and extend in the direction of movement of the tumbler 41, offset from each other in height.

In the present case, the variation of the position of the code pairs 28.1 to 28.5 of FIG. 2 takes place in said common base plane 36. This base plane 36 is decisive for the entire axial length of the associated key shaft 10.1 to 10.3. Alternatively, it would be possible to arrange such a base plane at least in some axial sections of the code webs 41 to 54 at different heights.

In both embodiments 10.1, 10.2, the key shanks, as I said, a square profile 17. You could alternatively use a hexagonal or an octagonal profile as a cross section. 6 to 10 show a key shaft 10.3, which has a special edge profile 17 ', which can be described as a "prism profile" because of the following special construction, which can be seen in FIG. 9.

Also, the prism profile 17 'has shown in FIG. 9 four effective edges 57.1 to 57.4, which are used to create four code strings 21 to 24 of FIG. The difference from the preceding square profile of FIGS. 1b to 4 is essentially that the second and the fourth side surface 12 '. 14 'are angled roof-like. So arise between the edges 57.1, 57.4 on the one hand and 57.2. 57.3 on the other hand roof profile pieces 60 which each other on both sides of the associated angle crest 59.1 or 59.2 angled faces 58.1, 58.2 produce. The two roof profile pieces 60 are formed in the two mutually opposite side surfaces 12 ', 14 ^: mirror-inverted and have the advantage of being the same an increase in Variation Variety in the Arrangement of Code Pair 58.1 to 58.5. which can be illustrated with reference to FIGS. 2 and 9.

FIG. 9 is FIG. based on the edge 57.4. determine an inclination profile of the partial surface 58.1 with a roof angle increase 61 of approximately 15 °. Drawing this, based on the local edge 57.1 in Fig. 2 by the dotted auxiliary line 62 at the same angle 61 in Fig. 2 a. that's how you recognize. that in front of the first local code pair 28.1 one gains additional key cross-section, where the variation of the coding could be continued further. This applies, based on the further edge 57.1 shown in FIG. 9, also for the coding to be carried out there, which gains additional latitude in the partial surface 58.2 of the roof profile piece 60. Despite little broadening of the web cross-section through the flat roof profile pieces 60, relatively large partial surfaces 58.1, 58.2 for the continuation of the variation of the position of the code pairs are obtained.

As can be seen from FIGS. 6 to 10, in the third exemplary embodiment 10.3 of the key shank according to the invention, all four edges 57.1 to 57.4 are provided with code webs 21 to 24, wherein mutually opposite code webs as in FIG. 10 can be recognized particularly well, an identical one to another Coding, namely 21. 23 on the one hand and 22. 24 on the other. This key shaft 10.3 forms a so-called "turning key" which can be inserted into two mutually 180 ° offset positions in the keyway 53 of the cylinder core 52 of Fig. 7c, in relation to its position in the cylinder core 52 there are two in this device As shown in Figures 6 to 7a, varieties of tumblers 41, 42. One type 41 of the tumbler scans, for example, the code pairs along the codestack 22, while the other type 42 cooperates with the code bar 23. At a reversal position of the key engage the respective opposite code webs 24 to 21 the two varieties 41 and 42 of the tumblers.

The two tumblers 41, 42 are, as can be seen particularly well in FIGS. 6 and 7b, offset from each other by an angle which corresponds to the angular offset of the associated code webs 22, 23. In the present case, it is a 90 ° angle. As illustrated by arrows 47.1 and 47.2, the directions of movement 47.1. 47.2 of these two types 41, 42 of the tumblers to each other at an angle 63, which is 90 ° here. The tumblers 41, 42 of the two varieties are otherwise arranged alternately in the cylinder core 52, whereby successive tumblers 41. 42 in the keyway 53 in mutually different directions 47.1, 47.2 are longitudinally movable.

As illustrated in phantom in FIG. 4, the one edge region 33 may be cut away, as illustrated at 37. As a result, space is gained, because the depth of the associated cutout 40 in the tumbler 41 can be correspondingly flatter. This does not affect the size of the relevant sampling points 15. 16 on both sides of the code bar 21 from the key shaft 10.2. Instead of such a cross-section 37, the edge in the corner area could also be erupted from ^g .

I l

S u b e c ia l e s:

10.1 first key shaft with a code web (Fig. 1a)

10.2 second key shaft with four code webs (FIGS. Ib to 4)

10.3 third key shaft with prism profile (FIGS. 6 to 10) 1 1 first side surface of 10.2 (FIGS. 1a to 4)

12 second side surface of 10.2 (FIGS. 1a to 4) 12 ^" second side surface of 10.3 (FIG. 9)

13 third side surface of 10.2 (FIGS. 1a to 4)

14 fourth side surface of 10.2 (FIGS. 1a to 4) 14 ^" fourth side surface of 10.3 (FIG. 9)

1 5 first sampling point at 1 1 (FIGS. 3, 4)

16 second sampling point at 1 1 (FIGS. 3, 4)

1 7 Edge profile, square (Fig. Ia to 4)

1 7 ^' edge profile, prism profile of 10.3 (FIGS. 6 to 10)

18 width of 10.1 (Fig. I a)

19 height of 10.1 (FIG. 1a)

20 web width (Fig. 2)

21 first code bar at 30.1 (FIG. 1b)

22 second code bar at 30.2 (Fig. Ib)

23 third code bar at 30.3 (FIG. 6)

24 fourth code bar at 30.4 (FIG. 1b)

25.1 first web edge of 21 at 28.1 (FIG. 2)

25.2 first web edge of 21 at 28.2 (FIG. 2)

25.3 first web edge of 21 at 28.3 (FIG. 2)

25.4 first web edge of 21 at 28.4 (FIG. 2)

25.5 first web edge of 21 at 28.5 (FIG. 2)

26.1 second web edge of 21 at 28.1 (FIG. 2)

26.2 second web edge of 21 at 28.2 (FIG. 2)

26.3 second web edge of 21 at 28.3 (FIG. 2)

26.4 second web edge of 21 at 28.4 (FIG. 2)

26.5 second web edge of 21 at 28.5 (FIG. 2) 27 key axis of 10.3 (Figures 6, 7c _; 8)

28.1 first code pair, first code (FIG. 2)

28.2 second code pair, second code (FIG. 2)

28.3 third code pair, third code (FIG. 2)

28.4 fourth code pair, fourth code (FIG. 2)

28.5 fifth code pair, fifth code (Fig. 2)

29.1 first sampling point (FIG. 8)

29.2 second sampling point (FIG. 8)

29.3 third sampling point (FIG. 8)

29.4 fourth sampling point (FIG. 8)

29.5 fifth sampling point (Fig. 8)

29.6 sixth sampling point (FIG. 8)

29.7 seventh sampling point (FIG. 8)

29.8 eighth sampling point (FIG. 8)

29.9 ninth sampling point (Fig. 8)

29. 10 tenth sampling point (FIG. 8)

30.1 first corner area of 10.2 (FIG. 1b, 2)

30.2 second corner area of 10.2 (Fig. I b)

30.3 third corner area of 10.2 (FIG. 1b)

30.4 fourth corner area of 10.2 (FIG. 1b)

31 first angular recess in FIG. 11 (FIG. 3)

32 second angular recess in FIG. 12 (FIG. 3)

33 cut edge portion at 21 (Fig. 4)

34 first angle leg of 31, 32 (FIG. 3)

35 second angle leg of 31, 32 (FIG. 3)

36 base level of 35 (FIG. 2)

37 cutting line for 33 (Fig. 4)

38 nose of 41 (Figure 5a)

39 Breakthrough in 41 or 41 '(FIG. 5a)

40 section in 41, 41 ', 42 (FIGS. 4, 5a, 5b, 7a, 7b)

41 Locking device (Fig. 4, 5 to 7b) 41 ^" Locking device (Fig. 5b)

42 tumbler (FIGS. 6, 7b) 43 first cut-out boundary of 40 (FIG. 4)

44 second cut-out boundary of 40 (FIG. 4)

45 first counter-scan location of 41 at 40 (FIG. 4)

46 second counter sample of 41 at 40 (Figure 4)

47. 1 direction of movement of 41 (FIGS. 4, 6 to 7c)

47.2 Direction of movement of 42 (FIGS. 6, 7b)

48.1 chamfer at 43 (FIG. 5b)

48.2 chamfer at 44 (FIG. 5b)

48.3 chamfer at 29.1 (Fig. 5b)

48.4 chamfer at 29.3 (Fig. 5b)

48.5 chamfer at 29.2 (Fig. 5b)

49. 1 connection between 43, 44 (FIG. 5b)

49.2 first edge of 39 at 40 (Figure 5b)

49.3 second edge of 39 at 40 (Figure 5b)

50 locking cylinder (Fig. 7c)

5 1 stationary cylinder housing (Fig. 7c)

52 cylinder core in 51 (Fig. 7c)

53 key channel in 52 (Fig. 7c)

54 Spring for 41 (Figure 7c)

55. 1 first blocking channel for 41 (FIG. 7c)

55.2 second blocking channel for 41 (FIG. 7c)

56.1 first blocking channel for 42 (Figure 7c)

56.2 second blocking channel for 42 (FIG. 7c)

57. 1 first edge of 17; 17 '(Figures 8 to 10)

57.2 second edge of 17; 17 '(Figures 8 to 10)

57.3 third edge of 17, 17 '(Figures 8 to 10)

57.4 fourth edge of 17, 17 '(Figures 6 to 10)

58.1 first subarea of 60 (FIG. 9)

58.2 second subarea of 60 (FIG. 9)

59.1 first angle vertex of 60 (FIG. 9)

59.2 second angle vertex of 60 (FIG. 9)

60 roof profile piece at 17 '(FIG. 9)

61 angle of roof rise of 60 (Figs. 9, 2) Auxiliary line for 61 (FIG. 2) angle between 47.1, 47.2 (FIG. 7b)

Claims

Patent claims:

Locking device with a lock cylinder (50).

which consists of a stationary cylinder housing (51) and a cylinder core (52) rotatably mounted therein

and with a key shaft (10.1. 10.2. 10.3) having an edged profile (17). which can be inserted into a key channel (53) in the cylinder core (52). in order to sort transversely movable tumblers (41, 42) onto the cross section of the cylinder core (52),

a pair of scanning points (15. 16) for coding the key shaft (10.1.10.2) for each tumbler (41. 42) by means of a profiled recess (31.32) extending in the longitudinal direction of the key shaft (10.1. 10.2. 10.3). , 10.3) are arranged

and a pair of counter-scanning points (45, 46) are provided on each tumbler (41, 42), which establish a corresponding counter-coding.

characterized .

that one (15) of the two scanning points (15, 16) is arranged by a first recess (31) in one side surface (11) of the edge profile (17) of the key shaft (10.2). while the other (16) is located in a second recess (32) in the adjacent side surface (12) of the edge profile (17),

that a web remains in that corner area (30.1) of the edge profile (17) of the key shaft (10.1, 10.2, 10.3) which is arranged between the two recesses (31.32), that the web functions as a code web (21 to 24) because opposite web flanks (25.3. 26.3) of the code web (21) generate the pair of scanning points (15. 16) of the key shaft (10. 1. 10.2) used for coding

that the tumblers (41. 42) are provided with a cutout (40) which, when in use, surrounds the code web (21 to 24) on opposite web flanks (25.3. 26.3).

and that the lateral boundaries (43, 44) of the cutout (40) in the tumblers (41, 42) form the counter-scanning points (45, 46).

2.) Locking device according to claim 1, characterized in that to vary the position of the pair of scanning points (15, 16) in successive sections of the code web (21 to 24), the two web flanks (25.3, 26.3) on the code web (21 to 24) are arranged laterally offset from one another.

3.) Locking device according to claim 2, characterized in that when varying the position of the pair of scanning points (15, 16) at at least one code point (28.1), both web edges (25.1, 26.1) of the code web (21) over the predetermined edge ( 57.1) in the edge profile (17) of the key shaft (10.2) and create an extreme scanning point pair (28. 1) there

and that the code web (21) at this extreme scanning point pair (28.1) only runs in one (12) of the two side flanks (11.12) of the edge profile (17) of the key shaft (10.2).

4.) Locking device according to one of claims 1 to 3, characterized in that the code web (21 to 24) has a substantially constant web width (20) over its entire axial length.

5.) Locking device according to one of claims 1 to 3, characterized in that the code web (21 to 24) has a different web width at least in places.

Ci. ) Locking device according to one of claims 1 to 5, characterized in that several corner areas (30.1 to 30.4) of the edge profile (17) of the key (10.2) are provided with a code web (21 to 24).

7.) Locking device according to claim 6, characterized in that all corner areas (10.1 to 10.4) of the edge profile (17) of the key (10.2) function as a code web (21 to 24).

8.) Locking device according to claim 6 or 7, characterized in that the code webs (21 to 24) in different corner areas (30.1 to 30.4) have different coding.

9.) Locking device according to claim 6 or 7, characterized in that at least some code webs (22, 24 and 21, 23) have the same coding.

0.) Locking device according to one of claims 1 to 5, characterized in that the edge profile (17 ^" ) of the key shaft (10.3) has code webs (21, 23; 22, 24) which are designed to be identical to one another at two opposite locations.

1 . ) Locking device according to claim 10, characterized in that the code webs (21, 23 and 22, 24) of the same code make the key shaft (10.3) a so-called reversible key, which is inserted into the key channel (53) of the lock cylinder in two opposite positions (50) can be inserted.

2.) Locking device according to one of claims 1 to 1 1. characterized in that tumblers (41, 42), which are arranged axially distant from one another in the cylinder core (52) of the lock cylinder (50), on code webs (21 to 24) which are circumferentially offset from one another ) in the edge profile ( 1 7: 17 ^: ) of the key shaft (10.1, 10.2; 10.3).

and that the respective directions of movement (47.1, 47.2) of these tumblers (41, 42) when inserting and removing the key shaft (10.1, 10.2; 10.3) run at an angle (63) to one another, which corresponds to the angular position of the associated code webs (21 to 24) corresponds.

3.) Locking device according to claim 12, characterized in that successive tumblers (41, 42) in the locking cylinder (50) are alternately movable in the different directions (47.1. 47.2) in the cylinder core (52).

■ 4.) Locking device according to claim 12 or 13, characterized in that the angle (63) between the two directions of movement (47.1, 47.2). adjacent tumblers (41, 42) are rectangular (90°).

5.) Locking device according to one of claims 1 to 14, characterized in that - seen in cross section through the key shaft (10.2) - each of the two recesses (31, 32) in adjacent ones Side surfaces (1 1. 12) from the edge profile

(17) is angular and forms an angular recess (31, 32).

and that the angle legs (34) of the two angle recesses (31, 32) facing each other form the pair of scanning points (15, 16) used for coding.

: 6.) Locking device according to claim 15, characterized in that the angle legs (34) of the two angle recesses (31. 32) used for coding (15, 16) are transverse to the direction of movement (47.1) of the associated tumblers (41) in the cylinder core ( 52) of the lock cylinder (50).

7.) Locking device according to claim 16, characterized in that the two angle legs (34. 35) run in an angular recess (31: 32) essentially perpendicular to the direction of movement (47.1) of the associated tumbler (41).

18.) Locking device according to claim 16 or 17, characterized in that at least one of the two angle legs runs essentially inclined to the direction of movement (47.1) of the associated tumbler (41).

19.) Locking device according to one of claims 15 to 18, characterized in that the angle leg (34) of the angle recess (31. 32) and / or the associated cutout boundary (43. 44) in the tumbler (41) is essentially straight are trained.

20.) Locking device according to one of claims 15 to 18, characterized in that the angle leg of the angle recess and / or the associated cutout boundary in the tumbler are essentially curved.

2 1 . ) Locking device according to claim 20, characterized in that the curvature is convex.

22.) Locking device according to claim 20, characterized in that the curvature is concave.

23.) Locking device according to one of claims 15 to 22, characterized in that the other angle leg (35) of the recess (31, 32) extends essentially in the direction of movement (47.1) of the associated tumbler (41).

24.) Locking device according to one of claims 16 to 23, characterized in that the two angle legs (34, 35) of a common angular recess (31; 32) close an apex angle between them, which corresponds to the axis (27) of the key shaft (10.1 , 10.2).

25.) Locking device according to claim 24, characterized in that the apex angle is right-angled, i.e. forms a 90 ° angle.

26.) Locking device according to one of claims 15 to 25, characterized in that analog angle legs (35) which are arranged in matching angle recesses (31, 32) on both sides of the code web (21). and extend essentially in the direction of movement (47. 1) of the associated tumblers (41), lie in a common base plane (36).

and that this base level (36) cuts the corner area (30. 1) at an angle from the edge profile (1 7) of the key shaft (10.2).

27.) Locking device according to claim 26, characterized in that the analog angle legs arranged on both sides of the code web are at least partially offset in height from one another.

28.) Locking device according to claim 26, characterized in that the base plane is the same along the entire axial length of the code web (21 to 24).

29.) Locking device according to claim 26, characterized in that the base plane is ^arranged at different heights in at least some axial sections of the code web.

30.) Locking device according to one of claims 1 to 29, characterized in that the edge profile (17) of the key is a square.

3 1.) Locking device according to claim 30, characterized in that the width (18) of the edge profile (17) has a different dimension than the height (19) of the edge profile (1 7).

32.) Locking device according to one of claims 1 to 29, characterized in that the edge profile is a hexagon or an octagon.

33.) Locking device according to one of claims 1 to 32, characterized in that - seen in the profile cross section of the key shaft ( 10.3) - one side surface ( 12 ^" . 14 ^; ) from the edge profile ( 1 7 ^" ) is angled in a roof-like manner and forms a roof profile piece (60) at this point

and that in the case of the code variation, the recess (3 1 ; 32) in this roof profile piece (60) can extend over both partial surfaces (58. 1 , 58.2) which are angled towards one another.

34.) Locking device according to claim 33, characterized in that the roof profile piece (60) _; which creates a side surface (12 ^" . 14 ^: ) in the edge profile (1 7 ^" ), has flat partial surfaces (58.1, 58.2).

35.) Locking device according to claim 33, characterized in that the partial surfaces of the roof profile piece are curved convexly or concavely and create an uneven side surface in the edge profile.

36.) Locking device according to one of claims 1 to 35, characterized in that the edge is in the edge profile or in the one provided there

Corner area is rounded.

37.) Locking device according to one of claims 1 to 35, characterized in that the edge (57.1) in the edge profile (17) or in the corner area (30.1 to 30.4) provided there is cut away (33).

38.) Locking device according to one of claims 1 to 37, characterized in that the edges on the side boundaries (43. 44) in the cutout (40) of the tumblers (41 ^" ) are bent, i.e. a chamfer (48. 1. 48.2 ) exhibit.

39.) Locking device according to claim 38, characterized in that the edge at the connection (49.1) between opposite boundaries (43, 44) in the tumbler cutout (40) is provided with a chamfer (48.3).

40.) Locking device according to claim 38 or 39, characterized in that the plate-shaped tumbler (41 ') has a central opening (39) for the key shaft, which adjoins the cutout (40) used for counter-coding

and that at least one edge (49.2, 49.3) at the breakthrough (39). which starts from one of the two boundary edges (43, 44) of the cutout (14) used for countercoding, are bent, i.e. have a chamfer (48.4, 48.5).