EP3191663B1 - Key - Google Patents

Description

The invention relates to a key according to the preamble of claim 1. Such keys with two coded surfaces are known from the prior art, in particular as reversible keys. Reversible keys are keys whose shank has profiles, guide grooves, hollow bores, elevations and / or notches arranged identically on both sides. The key has the same features when rotated around its longitudinal axis and can therefore - regardless of which side of the key is facing upwards - be inserted rotated into the key channel of the associated lock cylinder, which is not possible with a normal one-sided notched key .

Since the codes on reversible keys are identical on both sides, the codes on each side are usually queried alternately in the lock in order to reduce the number of scanning elements. In this context, the expression “identical codes” means that the codes on the respective surfaces under consideration are the same when the key is rotated about its longitudinal axis. Generic reversible keys with identical sides are from the publications, among others EP 0 613 987 A1 , EP 1 712 714 A1 , EP 0 210 037 A2 , WO 91/10795 A1 , and EP 0 440 983 A2 known.

With such reversible keys, however, it is sufficient to depict one page in order to be able to reproduce the key. This is disadvantageous with regard to modern reproduction methods (high-resolution smartphone cameras in combination with 3D printing), since illegal keys can simply be brought into circulation.

Another problem is that in practice it would be advantageous for two locking systems that each have locking cylinders with reversible keys to implement higher-level keys that lock in both locking systems.

In addition, reversible keys with lateral groove coding have the problem that the individual curves must be identical on both sides of the key. However, this results in restrictions for the design of the grooves at the key tip: The central position of the tumbler at the key tip cannot be used, otherwise there is an increased risk of breakage.

The object of the invention is to eliminate these and other problems, in particular the problem of the ease with which reversible keys can be copied. Furthermore, a possibility should be created to be able to block several different reversible key locking systems with the same key. Furthermore, the described restriction in the side slot coding is to be eliminated. In addition, the range of possible variations on the key is to be increased, and a higher degree of locking security is to be ensured.

These and other objects are achieved according to the invention by the characterizing features of claim 1.

This has the advantage that the encodings are different on both sides of the key, making it much more difficult for unauthorized persons to copy the key.

The solution according to the invention makes it possible to use a key to lock one or more lock cylinders of a locking system and, when the key is rotated about its longitudinal axis 90 ° to 180 °, to lock one or more lock cylinders of another locking system. It can be provided that a key that has the same coding on both sides has no blocking authorization. However, it can also be provided that a key that has the same coding on both sides has blocking authorization. One advantage of the solution according to the invention is that the feature for the authorization to block several lock cylinders does not have to be included in the lock cylinders of the locking systems, but is designed with at least two or more features on different surfaces of the key itself. As a result, a key can be designed that has a higher-level function in two different reversible key locking systems, but does not itself have the reversible key function. This can be, for example, a higher-level key for authorized persons, such as fire brigades, night watchmen, home helpers or the like.

Another advantage of the solution according to the invention, when the key is designed with curve coding, is that, due to the different characteristics of the curves on the two sides of the key, the central tumbler at the key tip can now also be used, since it is not in the form of a Groove must be milled out.

According to the invention it is provided that at least one coding of the first area at at least one scanning position is identical to the coding at the same scanning position on the second area, so that to lock the lock at least the coding at this scanning position only has to be scanned on one area of the key. A plurality of codings can also be present at a scanning position, one or more of which is identical on all surfaces of the key and one or more of which is embodied differently on at least one surface of the key.

According to the invention it is provided that, in addition to the codings mentioned, further codings are provided on the surfaces and / or at other locations of the key. The codings mentioned and / or further codings can essentially be straight, angular or curved, horizontally or vertically extending grooves, grooves, millings, notches or elevations, control surfaces, control tracks, hollows, bore hollows with identical or different diameters and / or depths, mounted balls , Circular or elliptical segment recesses, spherical segment-shaped elevations or depressions, magnetic codes, electronic codes and / or combinations of these elements.

According to the invention it is provided that the surfaces are key flat sides of a flat key.

According to the invention it can be provided that the codings are formed by control points which are provided transversely to the longitudinal extent of the key and are arranged at certain control levels, the control points preferably being connected to one another by control grooves.

According to the invention, at least one control groove with control points is provided on the first surface and at least one control groove with control points is also provided on the second surface, the control points of each control groove being provided at a defined scanning position, and at least one control point on at least one control groove at least one scanning position on the first surface has a different control height than the control point of the corresponding control groove at the same scanning position on the second surface.

According to the invention it can be provided that at least one control point of at least one control groove at at least one scanning position on the first surface has the same control level as the control point of the corresponding control groove at the same scanning position on the second surface. According to the invention, it can in particular be provided that at least six scanning positions AF and at least six control levels af are provided.

According to the invention it can be provided that at least three control grooves are provided, of which at least one is designed as a deep control groove with deep control points, and the remaining control grooves are designed as shallow control grooves with shallow control points, wherein the deep control grooves have a greater groove depth than the shallow control grooves, and the shallow control grooves run essentially parallel to one another.

According to the invention it can be provided that for at least one of the control grooves, preferably for the shallow control grooves, at least three, preferably five, control levels are provided.

According to the invention it can be provided that the codings, starting from the tip of the key in the direction of the bow of the key, are initially designed identically on at least one scanning position on both surfaces, and are made continuously different from a certain scanning position. It can be provided in particular that the deep control groove or the shallow control grooves, starting from the key tip in the direction of the key head, only extend up to a certain scanning position, so that up to this scanning position at each scanning position on each surface two shallow and one deep control groove, and from this scanning position only one shallow or two deep control grooves are provided at each scanning position.

Furthermore, a lock for keys according to the invention is disclosed, comprising a key channel with at least two sides, with scanning positions provided along the longitudinal extent of the key channel, with at least one control element for querying at least one coding on at least one surface of the key being provided at each scanning position, with at least one Locking element is provided, which can be brought into the release position for actuating the lock when the control element is in the appropriate position, and control elements for querying different codes on at least two surfaces of the key are provided at least at one scanning position on at least two sides of the key channel.

It is provided that control elements for querying the same coding, in particular for querying different features of the same coding, are provided on at least two surfaces of the key at at least one further scanning position on at least two sides of the key channel. It can in particular be provided that the control elements comprise control elements for intervening in codes, in particular for intervening in control grooves on the key.

It can be provided that the control elements comprise first control elements for engaging deep control grooves and second control elements for engaging in shallow control grooves. Furthermore, it can be provided that the control elements for controlling the locking elements have engagement means, in particular one or more query grooves, which interact in one or more positions of the control element with the locking element in such a way that it can be brought into the release position for actuating the lock.

It is provided that the key is a flat key and / or the lock is a cylinder lock, in particular a cylinder lock for receiving a flat key.

Furthermore, a system of at least two locks or groups of locks and at least one associated key according to the invention is disclosed, with at least one first lock or a first lock group at at least one specific scanning position at least only the first coding on the first surface, and at least one second lock or a second lock group at this scanning position queries at least only the second coding on the second surface of the key, so that the key locks the first lock or the first lock group in a first position and locks the second lock or the second lock group in a second position.

• Fig. 1a - 1d zeigen Querschnitte durch Ausführungsbeispiele herkömmlicher (links) und erfindungsgemäßer (rechts) Schlüssel;
• Fig. 2a - 2c zeigen Querschnitte durch Ausführungsbeispiele herkömmlicher und erfindungsgemäßer Schlüssel-Schloss-Kombinationen;
• Fig. 3a - 3b zeigen ein Ausführungsbeispiel eines erfindungsgemäßen Schlüssels;
• Fig. 4a - 4b zeigen ein weiteres Ausführungsbeispiel eines erfindungsgemäßen Schlüssels;
• Fig. 5a - 5b zeigen ein weiteres Ausführungsbeispiel eines erfindungsgemäßen Schlüssels;
• Fig. 6a - 6b zeigen den Schlüssel aus Fig. 3a - 3b in einer Detailansicht;
• Fig. 7a - 12b zeigen weitere Ausführungsbeispiele erfindungsgemäßer Schlüssel;
• Fig. 13a - 13b zeigen eine schematische Darstellung der Zuhaltungen im Inneren des Zylinderkerns eines offenbarten Schlosses;
• Fig. 14 - 15 zeigen weitere schematische Darstellungen der Zuhaltungen im Inneren des Zylinderkerns eines offenbarten Schlosses;
• Fig. 16 zeigt eine schematische dreidimensionale Darstellung der Zuhaltungen im Inneren des Zylinderkerns eines offenbarten Schlosses.

Further features according to the invention emerge from the description of the exemplary embodiments, the patent claims and the drawings. The scope of the invention is defined by the present claims. The invention is explained in more detail below on the basis of non-limiting exemplary embodiments:

• Figures 1a-1d show cross-sections through exemplary embodiments of conventional (left) and inventive (right) keys;
• Figures 2a-2c show cross-sections through exemplary embodiments of conventional key-lock combinations according to the invention;
• Figures 3a-3b show an embodiment of a key according to the invention;
• Figures 4a-4b show a further embodiment of a key according to the invention;
• Figures 5a-5b show a further embodiment of a key according to the invention;
• Figures 6a-6b show the key Figures 3a-3b in a detailed view;
• Figures 7a-12b show further exemplary embodiments of keys according to the invention;
• Figures 13a-13b show a schematic representation of the tumblers inside the cylinder core of a disclosed lock;
• Figures 14-15 show further schematic representations of the tumblers inside the cylinder core of a disclosed lock;
• Fig. 16 shows a schematic three-dimensional representation of the tumblers inside the cylinder core of a disclosed lock.

Figures 1a-1d show cross-sections through exemplary embodiments of conventional keys 1 according to the invention at a specific scanning position, with a cross-section through the key shaft of a conventional reversible key on the left and a cross-section through the key shaft of a key 1 according to the invention on the right. The keys 1 each have a first area 2 with first codes 3 and a second area 2 'with second codes 3'. While the codings 3, 3 'of the conventional keys are designed in such a way that they match when the key is rotated through 180 °, this is not the case in the exemplary embodiments of the key 1 according to the invention.

It therefore makes a difference whether the key is inserted into the lock in the normal position or in a position rotated by 180 °. In the lock - at least at this scanning position - both surfaces 2, 2 'of the key 1 must be queried.

Figures 2a-2c show cross-sections through exemplary embodiments of conventional key-lock combinations according to the invention. Fig. 2a shows a cross section through a conventional lock with a core 23 which is rotatably mounted in a housing 24 into which a conventional key 1 is inserted. Control elements 13, 13 'are arranged displaceably on both sides of the key 1 and interact with locking elements 14, 14' which engage in housing grooves. The key 1 is a key with lateral groove coding. The lock is designed in a conventional manner and scans the two shallow grooves with the control members 18 on the side 2 and the deep groove with the control member 17 'on the other side 2'. The position of the deep groove on surface 2 and the shallow grooves on side 2 'is not scanned because - because of the reversible key system - it is assumed that the codes on both surfaces 2, 2' are the same.

Figure 2b shows a cross section through an embodiment of a key-lock combination according to the invention. In this case, the codes in the form of deep grooves on the surfaces 2, 2 'of the key are different and are also queried independently of one another on both sides of the key. In order to be able to query both codes on each surface 2, 2 ', the locking elements 13, 13' engage in the deep groove on both sides via first control members 17, 17 '.

However, since the deep groove is in a different position depending on the rotation of the key 1, the control elements 13, 13 'each have two query grooves 19, 19' for engaging the locking elements 14, 14 '. The locking elements 14, 14 'are thus activated in two different positions of the control elements 13, 13' and lock the lock. Although key 1 is not a reversible key - since the codes on face 2 and 2 'are different - it functions as a reversible key, since both faces of the key are queried in both positions.

Figure 2c shows an embodiment analogous to FIG Figure 2b with the difference that at the illustrated scanning position of the key 1 the coding is not carried out by one deep groove per surface 2, 2 ', but by two shallow grooves per surface 2, 2'. The control elements 13, 13 'each have two control elements 18, 18' for engaging the shallow grooves, and two query grooves 19, 19 'each for engaging the locking elements 14, 14'. The locking elements 14, 14 'are so, as in the embodiment of Figure 2b , in each case activated in two different positions of the control elements 13, 13 'and lock the lock, although it is not a reversible key.

In an exemplary embodiment not shown, the lock has a further mechanical interrogation logic, in particular of the locking elements 14, 14 ', which ensures that the lock is off Fig. 2b or 2c can not be blocked by a conventional reversible key with identical codes on the areas 2, 2 ', but only by keys with different codes.

Figures 3a-3b show an embodiment of a key 1 according to the invention, which is designed as a flat key with a key bow 10 and a key tip 20 as well as two opposite surfaces 2, 2 '. The surfaces 2, 2 'are the key flat sides 16, 16'. For both surfaces 2, 2 '1 scanning positions 4 are provided along the longitudinal extension of the key, namely six scanning positions A - F. At each scanning position 4 there is a coding 3, 3' on both surfaces 2, 2 'of the key 1, whereby the first coding 3 on the surface 2 and the second coding 3 'on the surface 2' is provided.

The codings are different on the scanning position A and identical on the scanning positions B - F. A lock that only scans one side of the key can therefore only be operated in one position of the key. In order to be able to query both codes at the scanning position A, the lock must be designed in such a way that it queries both surfaces 2, 2 'of the key 1 independently of one another at least at the scanning position A.

Figures 4a-4b show a further embodiment of a key 1 according to the invention, which is designed as a flat key with a key bow 10 and a key tip 20 and two opposite surfaces 2, 2 '. The surfaces 2, 2 'are the key flat sides 16, 16'. For both surfaces 2, 2 '1 scanning positions 4 are provided along the longitudinal extension of the key, namely six scanning positions A - F. At each scanning position 4 there is a coding 3, 3' on both surfaces 2, 2 'of the key 1, whereby the first coding 3 on the surface 2 and the second coding 3 'on the surface 2' is provided.

The codings are different on the scanning position A and identical on the scanning positions B - F. In this exemplary embodiment, the codings 3, 3 'are designed as drill hollows 21, 21' with different depths and / or diameters.

Figures 5a-5b show a key 1 not according to the invention, which is designed as a flat key with a key bow 10 and a key tip 20 as well as two opposite surfaces 2, 2 '. The surfaces 2, 2 'are the key narrow sides 15, 15'. For both surfaces 2, 2 '1 scanning positions 4 are provided along the longitudinal extension of the key, namely six scanning positions A - F. At each scanning position 4 there is a coding 3, 3' on both surfaces 2, 2 'of the key 1, whereby the first coding 3 on the surface 2 and the second coding 3 'on the surface 2' is provided. The codings are different on the scanning position A and identical on the scanning positions B - F. In this exemplary embodiment, the codings 3, 3 'are designed as notches 22, 22' with different depths and / or dimensions.

Figs. 6a-6b show the key Figures 3a-3b in a detailed view. The key 1 is designed as a flat key with a key tip 20 and two opposite surfaces 2, 2 '. The surfaces 2, 2 'are the key flat sides 16, 16'. For both surfaces 2, 2 '1 scanning positions 4 are provided along the longitudinal extension of the key, namely six scanning positions A - F.

At each scanning position 4 there is a coding 3, 3 'on both surfaces 2, 2' of the key 1, the first coding 3 being provided on the surface 2 and the second coding 3 'being provided on the surface 2'. The codings are different on the scanning position A and identical on the scanning positions B - F.

The codings 3, 3 'include deep control points 6, 6' and shallow control points 7, 7 ', which are each connected to one another by a deep control groove 8, 8' and two shallow control grooves 9, 9 '. The deep control grooves 8, 8 'have a greater groove depth than the shallow control grooves 9, 9'. The shallow control grooves 9, 9 'run essentially parallel to one another.

The control stations 6, 6 ', 7, 7' are arranged at the interrogation positions at control heights 5 provided transversely to the longitudinal extension of the key 1. In this embodiment, six control levels a-f are provided. While the control points 6, 6 ', 7, 7' at the scanning positions B - F on both surfaces 2, 2 'of the key 1 are identical, at the scanning position A the deep control point 6, 6' is on the two surfaces 2, 2 'Arranged at a different tax level 5.

The Figs. 7a-9b show further exemplary embodiments of keys according to the invention. In these exemplary embodiments, the deep control groove 8, 8 ′, proceeding from the key tip 20 to the key bow 10, initially runs identically on a few scanning positions on both surfaces 2, 2 ′ of the key 1. From a certain scanning position, the deep control groove 8, 8 'on the surfaces 2, 2' is designed differently.
The shallow control grooves 9, 9 'extend, starting from the key tip 20, only up to this specific scanning position.

This means that up to this scanning position only one side of the key has to be scanned, while from this scanning position both sides of the key (as in Figure 2b shown) must be scanned.

The Figs. 10a-12b show further exemplary embodiments of keys according to the invention. In these exemplary embodiments, the shallow control grooves 9, 9 ′, proceeding from the key tip 20 to the key bow 10, initially run identically to a few scanning positions on both surfaces 2, 2 ′ of the key 1.

From a certain scanning position, the shallow control grooves 9, 9 'on the surfaces 2, 2' are designed differently. The deep control groove 8, 8 'extends, starting from the key tip 20, only up to this particular scanning position. This means that up to this scanning position only one side of the key has to be scanned, while from this scanning position both sides of the key (as in Figure 2c shown) must be scanned.

Figures 13a-13b show a schematic representation of the tumblers inside the cylinder core of a disclosed lock, the key and cylinder core and housing not being shown for reasons of clarity. Figure 13a shows a view into the key channel 11 and shows the control elements 13, 13 ', which query the key channel with control members 17, 17', 18, 18 '. At the side, the control elements 13, 13 'have query grooves 19, 19' which interact with locking elements 14, 14 '. In Figure 13b A top view of the key channel 11 is shown and the scanning positions 12 AF are shown. At each scanning position there are two control elements 13, 13 'on both sides of the key channel 11, which either have first control elements 17, 17' for interrogating the deep grooves on the key, or second control elements 18, 18 'for interrogating the shallow grooves. To the right and left of the key channel 11, the control elements 13, 13 'are shown again in a position rotated by 90 °. This exemplary embodiment of the lock is for a key as in FIG Figures 3a-3b shown executed because the grooves extend over the entire length of the key shaft.

In Fig. 14 is a version of the lock for a key as in Figures 9a-9b shown. The deep and shallow groove of the key are alternately scanned at scanning positions A, B and C. At the scanning positions D, E and F, the deep groove is scanned only on both sides.

In Fig. 15 is a version of the lock for a key as in Figures 12a-12b shown. The deep and shallow groove of the key are alternately scanned at scanning positions A, B and C. At the scanning positions D, E and F only the shallow grooves are scanned on both sides.

Fig. 16 shows a schematic three-dimensional representation of the tumblers inside the cylinder core of a disclosed lock, the control elements 13 and 13 'on both sides of the key channel 11 being shown. The first control elements 17 'for scanning the deep groove and the second control elements 18 for scanning the shallow grooves are shown in the extracted detail. The control members 17, 17 ', 18, 18' are essentially cylindrical elevations.

The interrogation grooves 19, 19 'can also be seen in the form of incisions with a substantially rectangular cross-section, which serve to interact with the blocking element 14, 14', as in FIG Figures 2a-2c was shown.

The invention is not restricted to the exemplary embodiments shown, but rather encompasses all embodiments within the scope of the following patent claims.

List of reference symbols

1

key

2

First face

2 '

Second surface

3, 3 '

Coding

4th

Sampling position of the key

5

Tax amount

6, 6 '

Depth control point

7, 7 '

Shallow control point

8, 8 '

Deep control groove

9, 9 '

Shallow steering groove

10

Key grain

11

Key channel

12th

Scanning position of the lock

13, 13 '

Control

14, 14 '

Locking element

15, 15 '

Key narrow side

16, 16 '

Key flat side

17, 17 '

First controller

18, 18 '

Second control organ

19, 19 '

Query groove

20th

Key tip

21, 21 '

Dimples

22, 22 '

Notches

23

core

24

casing

Claims (11)

1. A key (1) for locking a lock, comprising

   a. at least one first surface (2) and at least one second surface (2'),

   b. with multiple sensing positions (4) provided along the longitudinal extension of the key (1),

   c. at which at least one first code (3) is provided on the first surface (2) for reading in the lock and at least one second code (3') is provided on the second surface (2') for reading in the lock,

   d. wherein the surfaces (2, 2') are key flat sides of a flat key and wherein, in addition to the codes (3, 3'), further codes are provided on the surfaces (2, 2'),

   characterized in that
   at least one code (3) of the first surface (2) differs at least at one first sensing position (4) from the second code (3') at the same sensing position (4), wherein the codes (3, 3') are realized in such a manner at this sensing position that to lock the lock, at least the codes at this sensing position must be read on both surfaces (2, 2'),
   and in that
   at least one code (3) of the first surface (2) is identical at least at one further sensing position (4) to the code (3') at the same sensing position (4) on the second surface (2'), so that to lock the lock, at least the codes (3, 3') at this at least one further sensing position only have to be read on one surface (2, 2') of the key.
2. The key according to Claim 1, characterized in that in addition to the codes (3, 3') further codes are provided at other locations on the key (1).
3. The key (1) according to Claim 1 or 2, characterized in that the codes (3, 3') and/or further codes comprise essentially rectilinear, angled or bent, horizontally or vertically running grooves, channels, milled sections, notches (22, 22') or elevations, control surfaces, control paths, recesses, drilled recesses (21, 21') with identical or different diameters and/or depths, mounted balls, circular or elliptical segment recesses, spherical-segment-shaped elevations or recesses, magnetic codes, electronic codes and/or combinations of these elements.
4. The key (1) according to one of Claims 1 to 3, characterized in that the codes (3, 3') are formed by control points (6, 6', 7, 7') provided transversely to the longitudinal extension of the key (1) and arranged at certain control heights (5), wherein the control points are preferably connected to one another by control grooves (8, 8', 9, 9').
5. The key (1) according to Claim 4, characterized in that

   a. at least one control groove (8, 9) is provided with control points (6, 7) on the first surface (2) and at least one control groove (8', 9') with control points (6', 7') is likewise provided on the second surface (2'),

   b. wherein the control points of each control groove are provided at defined sensing positions (4), and

   c. at least one control point of at least one control groove has a different control height at least at one sensing position on the first surface (2) than the control point of the corresponding control groove at the same sensing position on the second surface (2').
6. The key (1) according to Claim 5, characterized in that at least one control point of at least one control groove has the same control height at least at one sensing position on the first surface (2) as the control point of the corresponding control groove at the same sensing position on the second surface (2').
7. The key (1) according to Claim 5 or 6, characterized in that at least six sensing positions A-F and at least six control heights a-f are provided.
8. The key (1) according to one of Claims 5 to 7, characterized in that at least three control grooves are provided, of which at least one is constructed as a deep control groove (8, 8') with deep control points (6, 6'), and the remaining control grooves are constructed as shallow control grooves (9, 9') with shallow control points (7, 7'),

   a. wherein the deep control grooves (8, 8') have a larger groove depth than the shallow control grooves (9, 9'),

   b. and wherein the shallow control grooves (9, 9') extend essentially parallel to one another.
9. The key (1) according to one of Claims 5 to 8, characterized in that at least three, preferably five, control heights are provided for at least one control groove, preferably for the shallow control grooves (9, 9').
10. The key according to one of Claims 1 to 8 with a key tip (20) and a key bow (10), characterized in that the codes (3, 3') are initially realized identically on both surfaces (2, 2') at least at one sensing position (4) starting from the key tip (20) towards the key bow (10), and are realized continuously differently from a certain sensing position onwards.
11. The key according to one of Claims 8 to 10 with a key tip (20) and a key bow (10), characterized in that the deep control groove (8, 8') or the shallow control grooves (9, 9'), starting from the key tip (20) towards the key bow (10) only extend up to a certain sensing position (4).

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