EP2262965A1

EP2262965A1 - Locking device comprising a key and a locking cylinder

Info

Publication number: EP2262965A1
Application number: EP08735297A
Authority: EP
Inventors: Matthias Habecke
Original assignee: Huf Huelsbeck and Fuerst GmbH and Co KG
Current assignee: Huf Huelsbeck and Fuerst GmbH and Co KG
Priority date: 2008-04-10
Filing date: 2008-04-10
Publication date: 2010-12-22
Anticipated expiration: 2028-04-10
Also published as: CN101999024B; US20110041575A1; CN101999024A; US8826707B2; EP2262965B1; WO2009124571A1

Abstract

A locking device comprises a key (10) and a locking cylinder (30). The locking cylinder (30) in turn is composed of a stationary cylinder housing (31) and a cylinder core (32) rotatably supported therein. In order to increase the break-in safety, it is proposed to use two types of plate closures (40, 50) in the cylinder core (32), the displacement of said closures pointing in two radial directions (41, 51) that differ from each other. The key (10) comprises planar outer surfaces (12, 13) disposed at an angle to each other, the two types of plate closures (40, 50) being parallel-displaceable to said surfaces. Each of the two adjoining outer surfaces (12, 13) has a dedicated linear control path (21, 22), which varies in adjoining key sections transversely to the key longitudinal direction (29) for coding the key (10). Accordingly, the plate closures (40, 50) have a pair of mating sampling sites (42, 52), which are disposed in defined positions and interact with the associated control path (21, 22) when the key (10) is inserted and generate a mating coding analogous thereto in the locking cylinder (30). Each of the two types of plate closures (40, 50) engages on the dedicated control path (21, 22) thereof.

Description

Locking device with a key and a lock cylinder

The invention is directed to a locking device specified in the preamble of claim 1. Art Such a device is known from DE 199 44 070 C2. The key is formed there as a flat key, which has on its broad outer surface a control groove for projections of corresponding platelet tumblers. Because this is a reversible key, matching control grooves are embedded on the opposing broad surfaces. For typing the key a rectilinear groove is arranged on the narrow sides, which does not cooperate with platelet tumblers.

Such equipped with platelet tumblers closing devices have proven in motor vehicles. In order to steal a motor vehicle, unauthorized persons strive by means of burglary tools, e.g. by a so-called 'picking system' to sort the platelet tumblers in the keyway on the cross section of the cylinder core, whereby the normally spring-loaded platelet tumblers release the cylinder core for rotation.

The invention has for its object to develop a reliable closure device referred to in the preamble of claim 1 species, which is characterized by a high security against break-ins. This is achieved by the measures mentioned in the characterizing part of claim 1, which have the following special significance.

Because the platelet tumblers of the two types are displaceable in mutually different radial directions, it is not readily possible to use the Lock cylinder to open by means of a burglary tool. Depending on how the different platelet tumblers are positioned, one needs different tools whose handling is mutually impeded.

This is especially true if the control tracks for the two types of platelet tumblers are formed opposite to each other, namely concave on the one hand or convex on the other hand. One type may have control tracks in the form of a control groove and the other in the form of a control rib. Accordingly, the counter-scan pairs in these two types are oppositely formed. In a control groove, the counter-scanning point pairs consist of the opposite flanks of a radial projection which engages in the control groove. In the case of a control rib the Gegenabtaststellen pairs are formed from a radial recess whose mutually directed flanks serve to encompass the control rib. The platelet tumblers with protrusions can not be adjusted with those burglary tools that would require the platelet tumblers with protrusions. Therefore, closing devices according to the invention are very safe to break.

Further measures and advantages of the invention will become apparent from the dependent claims, the following description and the drawings. In the drawings, the invention is shown in one embodiment. Show it:

1 is a perspective view of the shaft of a key of the device according to the invention,

Fig. 2, in enlargement, a cross section through the key of

1 along the section line II-II, which is in this case as a flat profile with two narrow and two wide outer surfaces, Fig. 3 is a side view of the key according to the invention with

Looking towards a broad outer surface of the flat key,

4 is a plan view of the narrow outer surface of the key of Fig. 1, 2,

5a, in enlargement, the plan view of a plate tumbler of a first type in the lock cylinder of the device according to the invention,

Fig. 5b, in a schematic, not to scale representation, a

Cross-section through the locking device according to the invention with a view of the platelet tumbler of FIG. 5a with inserted corrective key,

Fig. 6a in an analogous to Fig. 5a representation, the plan view of a second type of plate tumblers, in alternating order with that of Fig. 5a in the same cylinder core of the invention

Closing device is arranged, and

Fig. 6b, in one of the Fig. 5b corresponding representation, a

Cross section through the locking device according to the invention with inserted key, from which the interaction of the key with the tumbler plate of the second type of Fig. 6a results.

Figs. 1 and 2 show the locking device belonging to the invention special key 10, whose key cross-section 11 is a flat profile. The flat profile is a rectangular cross section with, in pairs opposite, two wide outer surfaces 12 and two narrow outer surfaces 13. All four Outside surfaces 12, 13 are provided with control tracks 21, 22. In the present case, mutually immediately adjacent outer surfaces 12, 13 equipped with mutually oppositely designed control tracks, namely on the wide outer surfaces 12, the control track is formed as a cam groove 21, while on the narrow outer surfaces 13 each have a control rib 22 is located. While one control track 21 is concave and its outer surface 12 below, the other control track 22 is convex and projects beyond the outer surface 13 of the key 10. Apart from the initial piece 20 of the cam 21, the cam groove 21 has a substantially constant groove width 23. Analog also applies to the control rib 22, which - seen in the cross-sectional plane of the key - also has a substantially constant rib width 24.

The key 10 cooperates with a closing cylinder 30 belonging to the closing device according to the invention. This consists of a stationary cylinder housing 31, in which a cylinder core 32 is rotatably mounted. The cylinder core 32 has two types 39, 49 of axially successive chambers 32, in which two different types 40, 50 of tumbler plates are arranged in an alternating sequence, the appearance of which results from FIGS. 5a, 5b. One type of chamber 39 extends parallel to the wide outer surface 12 of the inserted key 10, while the other type 49 at an angle, in particular perpendicular, namely parallel to the narrow outer surface 13 of the inserted key 10. By force arrows in Fig. 5b, 6b the associated spring loads 33, 36 are illustrated, which are generated by angularly arranged springs 47, 57 and endeavor in the absence of a key or a wrong key, push the platelet tumblers 40, 50 end in one of two diametrical locking channels 34, 35 , Then the cylinder core 32 is locked in the cylinder housing 31 and not in the direction of the arrow 37 rotatable.

For a rotation 37 of the cylinder core 32, the associated proper key 10 must be inserted into an axial keyway 38. Only then For example, the tumblers 40, 50 are sorted to the cross section of the cylinder core 32 shown in FIGS. 5b and 6b. The cylinder core 32 can be rotated by the key from a rest position shown in FIGS. 5b, 6b into one of a plurality of working positions, where certain functions in the associated vehicle are triggered. The functions are suitable for securing and unlocking locks and / or for starting, switching on or switching off an engine in the vehicle and / or for unlocking or locking the steering of a vehicle.

For the interaction between key 10 and die tumblers 40, 50, both the cam groove 21 and the control rib 22 have scanning point pairs 18 and 19, respectively. These are respectively formed by the groove flanks 25, 26 and rib flanks 65, 66 of FIG. 3 or 4 formed. Both the cam groove 21 and the control rib 22 have over their entire control length a substantially constant groove width 23 or rib width 24. Case, this can also be realized by different widths 23, 24 in different key sections. Decisive are in Figs. 3 and 4 with 14.1 to 14.5 on the one hand and 15.1 to 15.5 on the other marked sampling points on the respective control tracks 21, 22, where either the first type 40 or the second type 50 of the platelet tumblers attacks. These points are indicated in FIG. 3 by arrows and designated 40.1 to 40.5, whereas in FIG. 4 these are the scanning points 50.1 to 50.5 where, in the case of use, the locking device engages the second type 50 of the platelet tumblers with the key 10 inserted.

In the present case, the arrangement of the two types 40, 50 of the two plate tumblers is arranged alternately. The chambers 39 and 49 for the platelet tumblers 40 and 50 are offset from one another by a measure 48 shown in FIG. 4. In the distance of the plate tumbler type 50, the tumblers of the other type 40 are in each case in the middle. It is from lying on both opposite outer surfaces 12 and 13 respectively Matching control tracks 21, 22 each only one used. This allows the use of the key as a so-called "turn-key f. It is understood that the two types 40, 50 of the platelet tumblers could also be arranged in the cylinder core 32 in other ways. Thus, it would be possible, for example, to provide a mirror-image arrangement of the associated wafer tumblers 40 with respect to the other arrangement locations 40.1, 40.3 and 40.5 at the arrangement points 40.2 and 40.4 illustrated in FIG. Then, the projections 43 engage in one case in the front-side cam groove 21 and in the other case in the rear-side analog control groove of the key 10 a. The function as a reversible key is retained. The same applies to the other type 50.

By varying the position of the scanning points 18 and 19 in the cam groove 21 and the control rib 22 in the transverse direction 16 and 17 results in a coding of the key. In the present case, as shown in FIGS. 2 and 3, four step heights 61 to 64 are provided for the groove scanning points 18. As illustrated in FIG. 2, there are four analog step heights 61 'to 64' for the arrangement of the control rib 22. It is understood that the variations 61 to 64 for the control groove 21 are arbitrarily different than the variations 61 'to 64' of the control rib 22 could be trained.

Significantly, the direction of the displacements 41, 51 of the two-sided types 40, 50 of die tumblers are arranged at an angle 58 to one another, which results from FIG. Because of the rectangular cross-section 11, this angle 58 is rectangular in the illustrated embodiment.

C o m p a n c e m e n t i o n s

10 keys

11 key cross-section, flat profile

12 wide outer surface of 10

13 narrow outer surface of 10

14.1 first sampling point at 10 for 40 (FIG. 3)

14.2 second sampling point at 10 for 40 (Figure 3)

14.3 third sampling point at 10 for 40 (Figure 3)

14.4 fourth sampling point at 10 for 40 (Figure 3)

14.5 fifth sampling point at 10 for 40 (Figure 3)

15.1 first sampling point from 10 to 22 (Figure 4)

15.2 second sampling point from 10 to 22 (FIG. 4)

15.3 third sampling point from 10 to 22 (Figure 4)

15.4 fourth sampling point from 10 to 22 (Figure 4)

15.5 fifth sampling point from 10 to 22 (Figure 4)

16 transverse direction for variation of 21 in Fig. 12 (Fig. 3)

17 transverse direction for variation of 22 in FIG. 13 (FIG. 4)

18 sample pair at 14.1 to 14.5 (FIG. 3)

19 sample pair of 22 at 15.1 to 15.5 (FIG. 4) 0 initial piece of 21 1 linear control path, first type, control groove 2 linear control path, second type, control rib 3 web width of 21, groove width 4 web width of 22, rib width 5 first groove flank of 18 6 second groove flank of 18 7 cross-sectional plane of 10 8 control effective key length of 10 9 key longitudinal direction of 10 30 lock cylinders

31 cylinder housing of 30

32 cylinder core of 30

33 spring loading of 40

34 blocking channel for 40 in 32

35 blocking channel for 50 in 32

36 spring load for 50

37 rotary arrow of 32

38 key channel for 10 in 32

39 first sort of chambers in 32 for 40 (FIG. 5b)

40 first type of platelet tumblers (FIGS. 5a, 5b)

40.1 first attack location from 40 in 21 (FIG. 3)

40.2 second location from 40 in 21 (Figure 3)

40.3 third location from 40 in 21 (Figure 3)

40.4 fourth attack location from 40 in 21 (Figure 3)

40.5 fifth location from 40 in 21 (Figure 3)

41 shift direction of 40 (FIG. 5b)

42 Counter Scan Pair at 40 (Figure 5a)

43 radial projection of 40 (Figure 5a)

44 windows in 40 for 10 (FIG. 5a)

45 first counter-flank of 43 (FIG. 5a)

46 second counter-flank of 43 (Figure 5a)

47 spring for 53 (FIG. 5b)

48 Displacement of the assembly between 40, 50 in FIG. 32 (FIG. 4)

49 second sort of chambers in 32 for 50 (Figure 6b)

50 second type of plate tumbler (FIGS. 6a, 6b)

50.1 first sampling point from 50 to 22

50.2 second sampling point from 50 to 22

50.3 third sampling point from 50 to 22

50.4 fourth sampling point from 50 to 22

50.5 fifth sampling point from 50 to 22 Displacement direction of 50 (Figure 6a) counter-scan pair of 50 (Figure 6a) radial recess in Figure 50 for 10 (Figure 6a) window in Figure 50 for Figure 10 (Figure 6a) first counter-flank of Figure 52 (Figure 6a) second counter-flank of FIG. 52 (FIG. 6a) spring for 36 (FIG. 6b) angle between 41, 51 (FIG. 1)

Cylinder axis of 30 (Figures 5b, 6b) First step height of 18 (Figures 2, 3) 'First step height of 19 (Figure 2) Second step height of 18 (Figures 2, 3)' Second step height of 19 (Fig. 2) third step height of 18 (Figures 2, 3) 'third step height of 19 (Figure 2) fourth step height of 18 (Figures 2, 3)' fourth step height of Figure 19 (Figure 2) first rib edge of Figure 22 (Fig 4) second rib edge of 22 (FIG.

Claims

Patent claims

1.) locking device with a key (10) and with a lock cylinder (30),

consisting of a stationary cylinder housing (31) and a cylinder core (32) rotatably mounted therein with a group of platelet tumblers,

which upon insertion of the key (10) into an axial keyway (38) of the cylinder core (32) are displaceable radially to the cylinder axis (39) in order to sort the platelet tumblers on the cross-section of the cylinder core (32),

the key (10) having an edge profile with a plurality of planar, mutually angled outer surfaces (12, 13),

on an outer surface a key-in longitudinal direction (29) extending control track is arranged and for each of the engaging plate tumblers has a pair of sampling points, which in the key cross-section (1 1) face each other,

for coding the key (11) the position of the scanning point pairs of the control track in successive key scanning points (14.1 to 14.5; 15.1 to 15.5) transversely (16; 17) to the key longitudinal direction (29) varies,

and for analogue counter-coding, which are arranged in the same cylindrical cross-sectional plane and, with the key (10) inserted, engage a specific scanning pair of the control track assigned to them, characterized ,

in that at least two types (40, 50) of plate tumblers are arranged in the cylinder core (31) whose displacements (41, 51) point in two mutually different radial directions,

because the die tumblers of the first type (40) are displaceable (41, 51) parallel to a first outer surface (12) of the key (10) and those of the second type (50) are parallel to an adjacent second outer surface (13);

in that on the first outer surface (12) of the key (10) there is a first control track (21) for the first type (40) of the plate tumbler and on the second outer surface (13) a second control track (22) for the second type (50 ) are positioned

and counter-sensing points (42) of the first-type platelet tumblers (40) on the first control path (21) and those (52) of the second type (50) on the second control path (22) engage.

2.) Locking device according to claim 1, characterized in that the control track (21; 22) is formed like a line and occasionally different web widths (23; 24).

3.) Locking device according to claim 1 or 2, characterized in that, apart from the starting piece (20) at the free key end, the first and / or second control track (21, 22) has a substantially constant track width (23; 24).

4.) Locking device according to one of claims 1 to 3, characterized in that the distance between the two counter-spacings of a pair (42; 52) of the platelet tumblers of the first and / or second type (40; 50) in the entire cylinder core in Essentially the same.

5.) Locking device according to one of claims 1 to 4, characterized in that the distance between the scanning points of a pair (18; 19) on the first and / or second control track (21, 22) over the entire effective key length (28) in Essentially the same.

6.) Locking device according to one of claims 1 to 5, characterized in that the first or second control track from a control groove

(21) exist.

7.) Closing device according to one of claims 1 to 5, characterized in that the first or second control track of a control rib

(22) exist.

8.) Locking device according to claim 6 or 7, characterized in that the first control track is a control groove (21) and the adjacent second control track is a control rib (22).

9.) Locking device according to one of claims 1 to 8, characterized in that the key (10) has a Mehrkantprofϊl with a plurality of flat outer surfaces (12, 13)

and that preferably all outer surfaces (12, 13) are provided with control tracks, which are formed either as a control groove (21) or as a control rib (22).

10.) Locking device according to claim 9, characterized in that the key (10) has a square profile and all four flat outer surfaces (12, 13) are provided either with a control groove (21) or with a control rib (22)

and that a control groove (21) and then a control rib (22) are arranged on adjacent outer surfaces in alternating order once.

11.) Locking device according to one of claims 10, characterized in that the key (10) has a four-edged flat profile (1 1) which in pairs opposite each other on the one hand narrow and on the other hand wide outer surfaces (13, 12).

12.) Locking device according to one of claims 10 or 11, characterized in that the two pairwise opposite outer surfaces (12 or 13) in the square profile of the key (10), seen in plan view, are provided with the same control track profiles

and that the key (10) is a "turning key" which is selectively insertable into the cylinder core (32) in an inverted position.

13.) Locking device according to one of claims 10 to 12, characterized in that the pairs of opposite outer surfaces (12, 13) located control tracks are formed either as a control groove (21) or as a control rib (22).

14.) Locking device according to one of claims 10 to 13, characterized in that in a key (10) with a flat profile (1 1) on the narrow outer surfaces (13) control ribs (22) and on the wide outer surfaces (12) control grooves (21 ) are arranged.

15.) Locking device according to one of claims 1 to 14, characterized in that in the cylinder core (32) the platelet tumblers of the first and the second type (40, 50) are arranged in an alternating sequence.

16.) Locking device according to one of claims 6 to 15, characterized in that the Abtaststellen pairs (18) at a control groove (21) consists of two groove flanks (25, 26) in the same cross-sectional plane (27) of the key ( 10) are arranged and facing each other.

17.) Locking device according to one of claims 7 to 15, characterized in that the Abtaststellen pairs (19) at a control rib (22) consists of two rib edges (65, 66) which in the same cross-sectional plane (27) of the key ( 10) are arranged and facing away from each other.

18.) Locking device according to claim 16, characterized in that the Gegenabtaststellen pairs (52) of the platelet tumblers of that type (50), which hold a control rib (22) with inserted key (10) between them, of the two facing each other Contra sides (55, 56) of a radial recess (53) are produced in the platelet tumblers.

19.) Locking device according to claim 17, characterized in that the Gegenabtaststellen pairs (42) of the platelet tumblers of that type (40), which engage with inserted key (10) in a control groove (21), of the two mutually wegweisende counter flanks (45, 46) of a radial projection (43) are produced in the platelet tumblers.

20.) Locking device according to claim 18 and 19, characterized in that the radial projection (43) in the platelet tumblers of the first type (40) at an angle to the radial recesses (53) in the platelet tumblers of the second type ( 50) is arranged.

21.) Locking device according to claim 20, characterized in that in a key (10) with a flat profile (1 1) or square profile of the angle is rectangular.