Key and rotary lock cylinder with key

Abstract

A key (1) for a rotary lock cylinder (2) comprises a key handle (3) and a key shank (4) which adjoins the key handle (3) and which extends along a longitudinal axis (L), wherein: the key shank (4) comprises control recesses (6), in particular control bores, on its outer side (5) for arranging tumblers on the rotary lock cylinder (2), and at least one control element (7) arranged movably in the key shank (4), which control element (7) has a control surface (9) which interacts with a tumbler (8) of the rotary lock cylinder (2); the control element (7) can be moved from an initial position into an arrangement position during the interaction with the tumbler (8); the key shank (4) has a depression (10) for the control element (7), said depression extending from the outer side (5) into the key shank (4) and being laterally surrounded by a side wall (11) that runs around a central axis (M); and the control surface (9) of the control element (7) is situated in said depression (10).

Description

[0001] TITLE

[0002] KEY AND TURN LOCK CYLINDER WITH KEY

[0003] TECHNICAL FIELD

[0004] The present invention relates to a key according to claim 1 and a rotary locking cylinder according to claim 12 as well as a system with a key and a rotary locking cylinder according to claim 21.

[0005] STATE OF THE ART

[0006] EP 0 621 384 discloses a key with a matching rotary lock cylinder. A control element is located in the shaft of the key, which interacts with an additional locking mechanism for the rotor.

[0007] Although the keys and rotary lock cylinders according to EP 0 621 384 are considered to be particularly tamper-proof, many people want to further increase the security against copying of such a key or rotary lock cylinder by further increasing the query security.

[0008] Another key with a matching rotary lock cylinder is known from EP 2 844 811. The key according to EP 2 844 811 has a control element that interacts with a tumbler on the rotary lock cylinder. In one embodiment of EP 2 844 811, two tumblers are combined into one another. One of the tumblers is positioned by a fixed interrogation surface on the key, and the other is positioned by the movable control element. The latter is a type of "floating" interrogation, controlled by the spring assemblies. Even though EP 2 844 811 significantly increases interrogation reliability compared to EP 0621 384, its design requires very precise manufacturing.

[0009] The key of EP 2 844 811 also has the disadvantage that the movable control element is poorly protected against gross mechanical influences, such as misuse or tampering. Furthermore, the clearly visible and protruding position of the spring-loaded control element in the key generally makes it more vulnerable to key copying. Furthermore, the protruding position of the spring-loaded control element promotes mechanical wear on the control element.

[0010] PRESENTATION OF THE INVENTION

[0011] Based on this prior art, the invention is based on the object of providing a key that overcomes the disadvantages of the prior art. In particular, a preferred object is to provide a key that has an active control element, with the key being designed to be more advantageous, particularly with regard to robustness and / or security.

[0012] These and other objects are achieved by the subject matter according to claim 1. Accordingly, a key for a rotary lock cylinder comprises a key handle and a key shank adjoining the key handle and extending along a longitudinal axis. The key shank comprises on its outer side control recesses, in particular control bores, for locating tumblers on the rotary lock cylinder and at least one control element movably arranged in the key shank. The control element has a control surface that cooperates with a tumbler of the rotary lock cylinder. When collaborating with the tumbler, the control element can be moved from an initial position into an locating position. The key shank has a recess for the control element that extends from the outer side into the key shank. The recess is laterally surrounded by a side wall that runs around a central axis.The control surface of the control element is located in the recess mentioned.

[0013] The arrangement of the control element in the recess has the advantage that the key shank is not excessively weakened, as would be the case with a cutout extending through the key shank. The recess is surrounded by parts of the shank and weakening only occurs due to the recess. Consequently, by arranging the control element in the recess, the functionality of the control element can be achieved while at the same time maintaining or only slightly weakening the stability and robustness of the key shank. The arrangement of the control element in the recess has the advantage that the control element is more discreetly arranged for the observer. When looking at the key, the observer only sees a recess and does not recognize the control element at first glance.

[0014] The control surface is located in the recess. This means that the control surface is located inside or within the recess. The control surface is not located outside the recess. This means that the control surface is offset into the key shaft when viewed from the outside. Thus, the control surface and the control element are well protected from external influences by the side wall.

[0015] The recess is preferably a hole.

[0016] Preferably, the control element is arranged in the region of the key tip. Preferably, one of the control elements is arranged. Alternatively, it is also conceivable that two or more control elements are arranged.

[0017] When the control element is in an initial position, the control surface preferably forms the base surface of the recess. Viewed in a plane spanned by the control surface, the diameter of the side wall substantially corresponds to the diameter of the control surface. The side wall extends from the base surface or the control surface toward the outside.

[0018] The control surface thus forms the base or floor of the recess. By designing the control surface with a diameter identical to the diameter of the base surface, the presence of the control surface is further concealed, because the transition between the control surface and the side wall is located at a location where an edge would be visible anyway due to the transition from the control surface to the bottom of a hole.

[0019] Preferably, the recess has an locating surface which cooperates with a further locking device of the rotary locking cylinder and extends around the central axis in a ring-like manner, in particular in a circular ring-like manner.

[0020] The locating surface has an inner diameter and an outer diameter, with the locating surface extending between the inner and outer diameters. If the locating surface is formed as a circular ring, the inner and outer diameters are concentric with each other.

[0021] The alignment surface, like the control surface, is located in the recess. Preferably, the alignment surface is an integral part of the key shank.

[0022] The recess with the alignment surface is preferably a stepped bore. This can be easily created using a suitable drilling tool.

[0023] The control surface is preferably concentric with the positioning surface.

[0024] Preferably, a first portion of the side wall extends from the locating surface to the outside of the key shank and a second portion of the side wall extends from the locating surface to the control surface of the control element.

[0025] The first section extends outward from the outer diameter of the locating surface, and the second section extends inward from the inner diameter of the locating surface. Arranging the locating surface inside the recess provides the further advantage that the locating surface is protected by the side wall, particularly by the first section of the side wall.

[0026] Preferably, the control surface is located deeper in the recess than the locating surface. In other words, the control surface is offset inward relative to the locating surface in the recess, as seen in the direction of the central axis. The inward offset has the advantage that the control element is located deeper in the key shank and is thus well protected against mechanical influences.

[0027] Preferably, the distance between the outer side and the positioning surface, viewed in the direction of the central axis, is greater or smaller than the distance between the positioning surface and the control surface, viewed in the direction of the central axis. Alternatively, the distance between the outer side and the positioning surface, viewed in the direction of the central axis, is equal to the distance between the positioning surface and the control surface, viewed in the direction of the central axis.

[0028] Preferably, the alignment surface is a flat surface extending perpendicular to the central axis. Preferably, the alignment surface surrounds the control surface on the outside, viewed in the direction of the central axis.

[0029] Preferably, the control surface is circular, and the alignment surface is concentric with the control surface. In other words, the alignment surface extends concentrically around the control surface.

[0030] Preferably, the side wall is conical at least in sections, so that the diameter of the recess becomes smaller with increasing distance from the outside.

[0031] The conical design of sections of the side wall has the advantage of providing automatic centering between the locking elements and the recess. This is particularly advantageous for small cross-sections of the locking elements.

[0032] Particularly preferably, the aforementioned first section extends conically to the alignment surface, and the aforementioned second section extends conically to the control surface. Configuring the side wall with conical sections offers the advantage of allowing transitions to be created in the recess, which are advantageous in terms of stability. In particular, the angled transitions reduce any notch effects.

[0033] In a first preferred variant, the control element comprises a bolt arranged in a bore in the key shank and a spring element, in particular a compression spring. The spring element preferably applies a force to the bolt that pushes the control element outward, as seen from the key shank. The bolt has said control surface. The recess and the bore are preferably arranged concentrically with each other.

[0034] In a second preferred variant, two control elements and two associated recesses are arranged. Each of the control elements has a bolt arranged in a bore in the key shank. A spring element, in particular a compression spring, is arranged in the bore. The bolts are acted upon by the same spring element, wherein the control surface of the first bolt lies in a first of said recesses and wherein the control surface of the second bolt lies in a second of said recesses. In said second variant, the recesses are arranged opposite one another on opposite sides of the key, viewed with respect to the longitudinal axis. The recesses are preferably located on the narrow sides of the key. The recesses and the bore are preferably arranged concentrically to one another.

[0035] In both variants, the bolt, or at least one of the bolts, is held by a sleeve pressed into the bore with a through-hole through which the bolt extends. When arranging the two bolts, one of the bolts can be held by a step in the bore, and the other bolt can be held by the sleeve.

[0036] Preferably, the through-opening provides a portion of said recess; in particular, such that the control surface lies in said portion. Preferably, the sleeve is positioned relative to the alignment surface such that the sleeve has no effect on the alignment process of the further locking device.

[0037] Preferably, the sleeve is surrounded by the locating surface, in particular the sleeve has an outer diameter which corresponds to the inner diameter of said locating surface.

[0038] Preferably, an end face of the sleeve is offset relative to the locating surface towards the longitudinal axis or arranged flush with the locating surface.

[0039] Preferably, the sleeve is positioned with respect to the alignment surface in such a way that the sleeve has no effect on the alignment process of the further locking device.

[0040] In other words, the sleeve only secures the corresponding bolt and has no influence on the alignment of the other locking device, which is aligned using the alignment surface. This has the advantage that the sleeve is not used for the alignment process. The alignment surface, which is fixed to the key and part of the key, is used exclusively for the alignment process of the other locking devices.

[0041] The bolt preferably has a cylindrical, in particular circular-cylindrical, cross-section. The bolt preferably has a cylindrical or conical guide pin opposite the control surface. The guide pin preferably extends into the spring element, in particular into the compression spring. The insertion of the guide pin into the spring element has the advantage of centering the spring element in the bore.

[0042] Preferably, the shape of at least one of the control recesses on the key shank is identical or similar to the shape of said recess. This has the advantage of further concealing the position of the control element.

[0043] Preferably, the side wall extends completely around the central axis such that the recess has no lateral opening.

[0044] The control surface is preferably located at the deepest point of the recess. The recess is preferably open in the outer area. The recess is thus freely accessible for the locking devices. The central axis of the recess preferably runs at an angle of 90° to the longitudinal axis. The side wall preferably extends circularly around the central axis, with the diameter of the recess preferably varying over the depth of the recess. The control surface is preferably designed as a planar or flat control surface which runs at an angle of 90° to the central axis of the recess.

[0045] Based on this prior art, the invention is based on the object of providing a rotary locking cylinder which is even more secure with regard to manipulation attempts.

[0046] These and other objects are achieved by a rotary locking cylinder according to claim 12. Accordingly, a rotary locking cylinder comprises a stator, a rotor rotatably mounted in the stator with a key channel, at least one tumbler cooperating with a control element movably mounted in a key shank of a key, and at least one further tumbler.

[0047] The guard locking mechanism, which works together with the control element, comprises a stator pin arranged on the stator and a rotor pin arranged on the rotor, as well as a stator pin spring acting on the stator pin. The stator pin spring applies a spring force to the stator pin and the rotor pin in the direction of the keyway. The stator pin and the rotor pin engage at the front via a conical structure. The rotor pin works together with the control element in the key. Due to the conical structure between the stator pin and rotor pin, the control element can be moved from an initial position to an engagement position when the rotor is rotated by the key. Due to this movement, the stator pin and the rotor pin can also be moved from a locked position to a release position.The entire package consisting of stator pin, rotor pin and control element is thus moved in the direction of the key, with the rotor pin and the control element being moved into the key so that the rotor pin comes to lie below the dividing line between the rotor and stator. The further locking device comprises a stator sleeve movably mounted in the stator and a rotor sleeve movably mounted in the rotor as well as a stator sleeve spring acting on the stator sleeve. The stator sleeve spring applies a spring force to the stator sleeve and the rotor sleeve in the direction of the key channel. The stator sleeve and the rotor sleeve can be moved from a locked position to a released position by an alignment surface on the key. The stator pin is movably mounted in the stator sleeve and the rotor pin in the rotor sleeve.

[0048] The arrangement of the aforementioned pins in the aforementioned sleeves offers the advantage that the elements to be aligned are all located on a common axis, which simplifies the alignment of these elements when using an authorized key. Another advantage is that the tumblers themselves are more complex, making tampering for unauthorized operations, such as lock picking, more difficult. This would require both the pins and the sleeves to be aligned together and simultaneously, which is made extremely difficult by the described structure.

[0049] In the release position, the rotor pin and the stator pin are positioned such that the rotor pin is below the dividing line between the rotor and stator, and the stator pin is above the dividing line between the rotor and stator. The dividing line, viewed in cross-section through the center axis, is a line that forms between the rotor and stator.

[0050] The rotary lock cylinder described herein is preferably operated with the key described herein. The rotary lock cylinder described and the key described form a corresponding system. In other embodiments, other keys may also be provided. On the rotor pin side, the conical structure is formed by a conical surface extending around the central axis and arranged on the outside. On the stator pin side, the conical structure is formed by a conical surface extending around the central axis and arranged on the inside.

[0051] Preferably, the stator sleeve and / or the rotor sleeve is conical on the respective end face with which the stator sleeve and the rotor sleeve are in contact with each other; such that the contact surface between the stator sleeve and the rotor sleeve is minimized.

[0052] Preferably, the stator sleeve has an inner lateral surface and an outer lateral surface, wherein the inner lateral surface and / or the outer lateral surface are conical.

[0053] Preferably, the stator pin has a cylindrical outer surface which, when the stator pin is in the locked position, lies at the level of the dividing line between the stator and rotor. Preferably, the stator sleeve has a cylindrical outer surface which, when the stator sleeve is in the locked position, lies at the level of the dividing line between the stator and rotor. Thus, the cylindrical outer surface of the stator pin and / or the cylindrical outer surface of the stator sleeve, each in the locked position, provides a blocking of the rotational movement of the rotor.

[0054] Preferably, both the tumbler and the further tumbler protrude into the key channel in the locked position and can be moved towards the stator when the key is inserted.

[0055] Preferably, when the key is inserted, the stator sleeve and the rotor sleeve are movable radially outward from the locked position into an intermediate position due to the contact of the stator sleeve with the outside of the key. Upon reaching the fully inserted position, the stator sleeve and the rotor sleeve are movable radially inward from the intermediate position into the release position.

[0056] Preferably, when the key is inserted, the stator pin and the rotor pin are movable radially outwards from the locking position into an intermediate position by the contact of the stator pin with the outside of the key, and that when the fully inserted position is reached, the stator pin and the rotor pin are movable radially inwards from the intermediate position into the release position.

[0057] Particularly preferably, both the stator sleeve / rotor sleeve combination and the stator pin / rotor pin combination are moved radially outwards into the intermediate position and then radially inwards for alignment.

[0058] Preferably, the dimensions of the key, the stator sleeve, the rotor sleeve, the stator pin, and the rotor pin are selected such that, during movement from the locked position to the intermediate position, both the stator sleeve and the rotor sleeve, as well as the stator pin and the rotor pin, pass through the release position. Due to the selected dimensions, the pairing of the stator sleeve and the rotor sleeve, as well as the pairing of the stator pin and the rotor pin, do not pass through the release position simultaneously. This ensures that, during movement to the intermediate position, one of the pairs is always in the locked position.

[0059] Preferably, the rotor sleeve has a stop surface on the rotor sleeve side, and the rotor pin has a stop surface on the rotor pin side. Upon insertion of the rotor sleeve, the stop surface on the rotor sleeve side is moved toward the stop surface on the rotor pin side until the two stop surfaces are in contact with each other. Upon insertion into the release position, the rotor pin moves into a block against the rotor sleeve.

[0060] Preferably, in the release position, the rotor sleeve lies firmly between the locating surface of the key and the end face of the stator sleeve or the inner surface of the stator.

[0061] Preferably, the stator sleeve spring provides a spring force which is greater than the spring force of the spring element acting on the control element.

[0062] Preferably, the stator sleeve and / or the rotor sleeve are made of a material that has a greater hardness than the material of the stator and / or the rotor. The stator sleeve and rotor sleeve are preferably made of the same material. Preferably, the stator sleeve and / or the rotor sleeve are made of hardened steel.

[0063] Preferably, on the rotor pin side, the conical structure is formed by a conical surface extending around the central axis, and on the stator pin side, the conical structure is formed by a conical surface extending around the central axis. Optionally, the conical surface of the rotor pin is adjoined by a shoulder surface. Optionally, the conical surface of the stator pin is adjoined by an edge section. Preferably, the shoulder surface is positioned in the alignment position such that it is level with the dividing line between the rotor and stator.

[0064] Further embodiments are specified in the dependent claims.

[0065] BRIEF DESCRIPTION OF THE DRAWINGS

[0066] Preferred embodiments of the invention are described below with reference to the drawings, which are for illustrative purposes only and are not to be construed as limiting. In the drawings:

[0067] Fig. 1a is a perspective view of a key according to a preferred embodiment of the present invention with a control element;

[0068] Fig. 1b is a detailed view of Figure 1a;

[0069] Fig. 2a is a sectional view of the front part of the key according to Figures 1a / 1b in the area of ​​the control element;

[0070] Fig. 2b is a detailed view of Figure 2a;

[0071] Fig. 3a is a sectional view through a rotary locking cylinder with a rotor, a stator, a tumbler and a further tumbler according to an embodiment of the present invention, the section running transversely to the axis of rotation of the rotor;

[0072] Fig. 3b is a sectional view of the rotary locking cylinder according to Figure 3a, the section passing through the axis of rotation of the rotor;

[0073] Fig. 4 is a sectional view of the rotary locking cylinder according to the preceding figures during the insertion process of the key according to the preceding figures;

[0074] Fig. 5 is a sectional view of the rotary locking cylinder according to Figure 4 with the key further inserted;

[0075] Fig. 6a-6c sectional views of the rotary locking cylinder according to Figure 4 with the key fully inserted;

[0076] Fig. 7a a sectional view according to Figure 6c with fully inserted

[0077] Key when turning the key;

[0078] Fig. 7b is a sectional view according to Figures 6c / 7a with the key in advanced rotation;

[0079] Fig. 8a is a sectional view of the front part of a key according to a further development of the invention;

[0080] Fig. 8b is a detailed view of Figure 2a;

[0081] Fig. 9a / b sectional views through a rotary locking cylinder according to a further development of the invention;

[0082] Fig. 10 is a sectional view of the rotary locking cylinder according to Fig. 9a / b with the key according to Fig. 8a / b with the key fully inserted; and

[0083] Fig. 11 is a sectional view according to Figure 11 with the key in advanced rotation.

[0084] DESCRIPTION OF PREFERRED EMBODIMENTS

[0085] Figures 1a to 2b show various views of a key 1. The key 1 is preferably used to operate a rotary lock cylinder 2 according to Figures 3a to 7c. Figures 8a to 11 show a further development of the key 1 and the rotary lock cylinder 2, with identical parts bearing identical reference numerals.

[0086] The key 1 comprises a key handle 3 and a key shaft 4 adjoining the key handle 3 and extending along a longitudinal axis L. The key shaft 4 has on its outer side 5 a plurality of control recesses 6, in particular control bores, for locating tumblers on the rotary locking cylinder 2. During the interaction between the tumblers and the control bores, the tumblers are located by the control bore in a known manner, such that the tumblers are moved from a locked position to a released position.

[0087] The key 1 further comprises at least one control element 7 movably arranged in the key shaft 4. The control element 7 is mounted so as to be movable relative to the key shaft 4. The control element 7 has a control surface 9 that cooperates with a tumbler 8 of the rotary lock cylinder 2. When interacting with the tumbler 8, the control element 7 can be moved from an initial position to an insertion position. During this movement, the control element 7 is moved relative to the key shaft 4.

[0088] The key shaft 4 has a recess 10 for the control element 7. The recess

[0089] 10 extends from the outer side 5 into the key shank 4. The recess 10 is laterally surrounded by a side wall 11 extending around a central axis M. The side wall 11 extends completely around the central axis M, such that the recess 10 has no lateral opening. The control surface 9 of the control element 7 lies in the aforementioned recess 10.

[0090] The recess 10 is open toward the outside. The central axis M of the recess extends substantially perpendicular to the longitudinal axis L. The recess 10 is preferably formed as a bore, particularly preferably as a stepped bore.

[0091] In the embodiment shown, the control surface 9 forms the base surface of the recess when the control element 7 is in its initial position. The diameter D11 of the side wall 11, viewed in a plane spanned by the control surface 9, essentially corresponds to the diameter D9 of the control surface 9. This essentially means that there is slight play of a few hundredths of a millimeter between the diameter D9 and the diameter D11. This is shown by the visible gap in Figure 2b, which represents a strong enlargement of the effective key size. The side wall 11 extends away from the base surface or the control surface 9 towards the outer side 5. When the control element 7 is moved during the insertion process, the control surface 9 is moved further into the key 1. The movement of the control element 7 is symbolized by the arrow P in Figure 2b.

[0092] In the embodiment shown, the recess 10 further comprises a positioning surface 12. The positioning surface 12 serves to accommodate a further tumbler 13 of the rotary lock cylinder 2. The arrangement of the further tumbler 13 in relation to the aforementioned tumbler 6 is explained in more detail below. The positioning surface 12 extends annularly around the central axis M. The positioning surface 12 is arranged in the direction of the central axis M at a distance from the control surface 9 and forms an integral part of the key shank 4. The positioning surface 12 is concentric with the central axis M. The control surface 9 is located deeper in the recess than the positioning surface 12.

[0093] Starting from the alignment surface 12, the side wall 11 extends in both directions. A first section 14 of the side wall 11 extends from the alignment surface 12 to the outer side 5 of the key shank 4. A second section 15 of the side wall 11 extends from the alignment surface 12 to the control surface 9 of the control element 7. Both sections 14, 15 are conical in the embodiment shown, so that the diameter of the respective section decreases with increasing distance from the outer side.

[0094] Viewed along the central axis M, the distance A1 between the outer side 5 and the locating surface 12 is greater or smaller than the distance A2 between the locating surface 12 and the control surface 9, viewed along the central axis. Alternatively, the two distances can be equal. By varying the distances under different keys, the number of permutations can be increased.

[0095] The classification surface 12 is a flat surface that runs perpendicular to the central axis M. The flat surface has the outer shape of a circle.

[0096] With reference to Figure 2a, the particularly preferred design of the control element 7 in the key will now be explained. In the embodiment shown, two control elements 7 and two associated recesses 10 are arranged. The recesses 10 are located opposite one another on the narrow sides of the key shank 4 with respect to the central axis M. Each of the control elements 7 has a bolt 17 arranged in a bore 16 in the key shank 4, with each recess 10 being assigned a respective bolt 17. A spring element 18, in particular a compression spring, is arranged in the bore 16. The bolts 17 are acted upon by the same spring element 18. The control surface 9 of the first bolt 17 lies in a first of said recesses 10, and the control surface 9 of the second bolt 17 lies in a second of said recesses 10.

[0097] One of the bolts, here bolt 17, is held by a sleeve 19 pressed into the bore 16 and having a through-hole 20 through which the bolt 17 extends. The other bolt 17 rests against a step 37 of the bore 15. Both bolts 17 have a flange 38 extending perpendicularly from the bolt 17, with the flange 38 resting against the sleeve 19 or the step 37.

[0098] The sleeve 19 is surrounded by the locating surface 12. In particular, the sleeve 19 has an outer diameter. The outer diameter corresponds to the inner diameter of the said locating surface 12. Preferably, the sleeve 19 is positioned with respect to the locating surface 12 such that the sleeve 19 has no effect on the locating process of the further tumbler 13. This means that the sleeve 19 does not protrude beyond the locating surface 12 from the bore 16. In the embodiment shown, the bolt 17 has a cylindrical, in particular a circular-cylindrical, cross-section. The bolt 17 has a cylindrical or conical guide pin 21 opposite the control surface 9, wherein the guide pin preferably protrudes into the said spring element.

[0099] Preferably, the shape of at least one of the control recesses 6 on the key shaft 4 is identical or similar to the shape of said recess 10.

[0100] A preferred embodiment of the rotary lock cylinder 2 according to the present invention will now be described with reference to Figures 3a to 7c. The rotary lock cylinder 2 is preferably operated with the key 1 described herein.

[0101] The rotary locking cylinder 2 comprises a stator 22, a rotor 23 rotatably mounted in the stator 22 with a key channel 24, at least one tumbler 8 cooperating with the control element 7 movably mounted in the key shaft 4 of the key 1, and at least one further tumbler 13.

[0102] The tumbler 8, which cooperates with the control element 7, comprises a stator pin 25 arranged on the stator 22 and a rotor pin 26 arranged on the rotor 23, as well as a stator pin spring 27 acting on the stator pin 25. The stator pin spring 27 applies a spring force to the stator pin 25 and the rotor pin 26 in the direction of the key channel 24, with the stator pin 25 and the rotor pin 26 engaging at the end via a conical structure 28. The rotor pin 26 cooperates with the control element 7 in the key 1. The conical structure is designed here as a conical recess 40 on the stator pin 25 and as a conical counterpart 41 on the rotor pin 26. The conical counterpart 41 is designed to match the shape of the conical recess 40.

[0103] The additional tumbler 13 comprises a stator sleeve 29 movably mounted in the stator 22 and a rotor sleeve 30 movably mounted in the rotor 23, as well as a stator sleeve spring 31 acting on the stator sleeve 29. The stator sleeve spring 31 applies a spring force to the stator sleeve 29 and the rotor sleeve 30 in the direction of the key channel 24. In the embodiment shown, the stator sleeve 29 and the rotor sleeve 30 can be arranged from a locked position to a released position by the arrangement surface 12 on the key 1. The stator pin 25 is movably mounted in the stator sleeve 29, and the rotor pin 26 is movably mounted in the rotor sleeve 30.

[0104] In Figures 3a and 3b, the stator pin 25 and the rotor pin 26, as well as the stator sleeve 29 and the rotor sleeve 30, are shown in the locked position. The rotor 23 cannot be pivoted relative to the stator 22 because the stator sleeve 29 lies at the level of the dividing line T between the rotor 23 and the stator 22, thus preventing movement between the rotor 23 and the stator 22.

[0105] Figure 4 shows the insertion of the key 1. The front side of the key shank 4 of the key 1 comes into contact with the rotor pin 26 of the tumbler 8 and with the rotor sleeve 30 of the further tumbler 13. The stator pin 25 and the rotor pin 26 as well as the stator sleeve 29 and the rotor sleeve 30 are lifted from the locked position by the insertion of the key and move radially away from the longitudinal axis L or from the key channel 24 in the direction of the stator.

[0106] Figure 5 shows an intermediate position of the two locking devices 9, 13. During movement into the intermediate position, the stator pin 25 and the rotor pin 26, as well as the stator sleeve 29 and the rotor sleeve 30, pass the dividing line T with their respective contact surfaces. In the intermediate position, the rotor sleeve 30 lies at the height of the dividing line T between the rotor 23 and the stator 22, thus preventing movement between the rotor 23 and the stator 22.

[0107] The dimensions of the key 1, the stator sleeve 29, the rotor sleeve 30, the stator pin 25 and the rotor pin 26 are selected such that during the movement from the locked position to the intermediate position, both the stator sleeve 29 and the rotor sleeve 30 as well as the stator pin 25 and the rotor pin 26 pass through the release position. However, due to the selected dimensions, the passing of the release position of the pairing of stator sleeve 29 and rotor sleeve 30 as well as the pairing of stator pin 25 and rotor pin 26 does not occur simultaneously. Starting from the intermediate position, the tumbler 9, 13 is moved into the release position. In the process, the stator sleeve 29, the rotor sleeve 30, the stator pin 25 and the rotor pin 26 are moved radially inwards from the intermediate position.

[0108] The release position is shown in Figures 6a, 6b and 6c. In the release position, the rotor sleeve 30 is in contact with the locating surface 12 on the key 1 and the contact surface between the stator sleeve 29 and the rotor sleeve 30 lies on the dividing line T. Furthermore, the stator pin 25 is in contact with the control surface 9 of the control element 8 of the key 7. The rotor pin 26 lies completely in the stator 22. Starting from the release position shown in Figures 6a, 6b, 6c, the rotor 23 can be moved with the key 1 relative to the stator

[0109] 22. During this pivoting, the conical structure 28 causes the rotor pin 26 to move toward the longitudinal axis L, pushing the control element 9 from its initial position into its alignment position. Figure 7a shows how the conical structure 28 provides the movement. The control element 9 is moved into the key 1 by the rotor pin 26, and the spring element 18 is compressed in the process. Figure 7b shows the rotor 23 in a further position, in which the contact between the rotor pin 26 and the stator pin 25 is completely eliminated. The rotor

[0110] 23 can rotate freely.

[0111] With reference to Figures 3a to 7b, further optional features of the rotary locking cylinder 2 are now shown.

[0112] The stator sleeve 29 and / or the rotor sleeve 30 are conical at the respective end faces 32, with which the stator sleeve 29 and the rotor sleeve 30 are in contact with each other. The conical design is such that the contact area between the stator sleeve 29 and the rotor sleeve 30 is minimized.

[0113] The stator pin 25 has a cylindrical outer surface 35, which, when the stator pin 25 is in the locked position, lies at the level of the dividing line between the stator 22 and the rotor 23. The rotor pin 26 also has a cylindrical outer surface 39, which, in the intermediate position, lies at the level of the dividing line between the stator 22 and the rotor 23. Furthermore, the stator sleeve 29 has a cylindrical outer surface 36, which, when the stator sleeve 29 is in the locked position, lies at the level of the dividing line between the stator 22 and the rotor 23.

[0114] Both the tumbler 8 and the further tumbler 13 protrude into the key channel 24 in the locked position and, as described above, can be moved in the direction of the stator 22 when the key 1 is inserted.

[0115] In the embodiment shown, the rotor sleeve 30 has a rotor sleeve-side stop surface 33, and the rotor pin 25 has a rotor pin-side stop surface 34. When the rotor sleeve 30 is inserted, the rotor sleeve-side stop surface 33 is moved against the rotor pin-side stop surface 34 until the two stop surfaces 33, 34 are in contact with each other. In the release position, the rotor sleeve 30 lies firmly between the insertion surface 12 of the key 1 and the end face of the stator sleeve or the inner surface of the stator. This is shown in Figures 7a / 7b.

[0116] The stator sleeve spring 31 provides a spring force which is greater than the spring force of the spring element 18 acting on the control element 7.

[0117] Figures 8a and 8b show a further development of the key 1 described above. The key 1 according to Figures 8a and 8b differs from the key 1 in the position of the control surface 9. Otherwise, the key 1 is designed identically to the key according to Figures 1 to 7. The control surface 9 is located deeper in the key shank 4 than in the embodiment according to Figures 1 to 7. Viewed in the direction of the central axis M, the distance A1 between the outer side 5 and the locating surface 12 in this further development is smaller than the distance A2, viewed in the direction of the central axis, between the locating surface 12 and the control surface 9. The deeper control surface 9 has the particular advantage of allowing greater flexibility for the paths of the stator sleeve 29 and rotor sleeve 30 during locating. This is achieved in conjunction with the stator pin 25 and the rotor pin 26.

[0118] Figures 9 to 11 show a further development of the rotary locking cylinder 2 described above. The rotary locking cylinder 2 according to these figures differs from the shape of the stator pin 25 and the rotor pin 26. The stator pin 25 and the rotor pin 26 engage with each other at the end via a conical structure 28. The conical structure is designed here as a conical recess 40 on the stator pin 25 and as a conical counterpart 41 on the rotor pin 26. The conical recess 40 has a conical surface. The conical counterpart 41 is designed to match the shape of the conical recess 40. The conical counterpart has a conical surface. The conical counterpart 41 is adjoined by a shoulder surface 42 which extends away from the conical counterpart 41 essentially at right angles to the central axis M. The conical recess 40 is adjoined by an edge section 43.The edge portion 43 extends to the shoulder surface 42 and is preferably in contact with the shoulder surface 42 in the locking position. Preferably, the shoulder surface 42 is positioned in the alignment position, as shown in Figure 10, such that the shoulder surface 42 is at the level of the dividing line between the rotor 23 and the stator 22. LIST OF REFERENCE SYMBOLS.

[0119] 1 key

[0120] 2 rotary locking cylinders

[0121] 3 key handle

[0122] 4 key shaft

[0123] 5 Outside

[0124] 6 tax recesses

[0125] 7 Control

[0126] 8 Tumbler

[0127] 9 Control surface

[0128] 10 Deepening

[0129] 11 Side wall

[0130] 12 Classification area

[0131] 13 additional locking devices

[0132] 14 first section

[0133] 15 second section

[0134] 16 Hole

[0135] 17 bolts

[0136] 18 spring element

[0137] 19 sleeve

[0138] 20 passage opening

[0139] 21 guide pins

[0140] 22 Stator

[0141] 23 Rotor

[0142] 24 key channels

[0143] 25 Stator pin

[0144] 26 Rotor pin

[0145] 27 Stator pin spring

[0146] 28 conical structure

[0147] 29 Stator sleeve

[0148] 30 rotor sleeve

[0149] 31 Stator sleeve spring

[0150] 32 front side

[0151] 33 rotor sleeve-side stop surface 34 rotor pin-side stop surface

[0152] 35 cylindrical outer surface, stator pin

[0153] 36 cylindrical outer surface, stator sleeve

[0154] 37 Step 38 Flange

[0155] 39 cylindrical outer surface, rotor pin

[0156] 40 conical recess

[0157] 41 conical counterpart

[0158] 42 Shoulder area 43 Edge section

[0159] 44 conical surface of 26

[0160] 45 Conical surface of 25 M Central axis L Longitudinal axis D9 Diameter

[0161] D11 Diameter T dividing line

Claims

PATENT CLAIMS 1. A key (1) for a rotary lock cylinder (2), comprising a key handle (3) and a key shaft (4) adjoining the key handle (3) and extending along a longitudinal axis (L), wherein the key shaft (4) has on its outer side (5) control recesses (6), in particular control bores, for arranging tumblers on the rotary lock cylinder (2) and at least one control element (7) movably arranged in the key shaft (4), which control element (7) has a control surface (9) cooperating with a tumbler (8) of the rotary lock cylinder (2), wherein the control element (7) is movable from an initial position into an arrangement position when cooperating with the tumbler (8), characterized in that the key shaft (4) has a recess (10) for the control element (7),which extends from the outer side (5) into the key shaft (4) and which is laterally surrounded by a side wall (11) surrounding a central axis (M), and in that the control surface (9) of the control element (7) lies in the said recess (10).

2. Key (1) according to claim 1, characterized in that, when the control element (7) is in the starting position, the control surface (9) forms the base surface of the recess (10), wherein the diameter (D11) of the side wall (11) seen in a plane spanned by the control surface (9) substantially corresponds to the diameter (D9) of the control surface (9), and wherein the side wall (11) extends away from the base surface or the control surface (9) towards the outside (5).

3. Key (1) according to claim 1 or 2, characterized in that the recess (10) has an arrangement surface (12) which cooperates with a further tumbler (13) of the rotary locking cylinder (2) and extends around the central axis (M) in a ring-like manner, in particular in a circular ring-like manner.

4. Key (1) according to claim 3, characterized in that a first section (14) of the side wall (11) extends from the arrangement surface (12) extends to the outer side (5) of the key shank (4) and that a second section (15) of the side wall (11) extends from the locating surface (12) to the control surface (9) of the control element (7); and / or that the control surface (9) lies deeper in the recess (10) than the locating surface (12); and / or that, viewed in the direction of the central axis (M), the distance between the outer side (5) and the locating surface (12) is greater or smaller than the distance between the locating surface (12) and the control surface (9) viewed in the direction of the central axis; or that the distance between the outer side (5) and the locating surface (12) viewed in the direction of the central axis (M) is equal to the distance between the locating surface (12) and the control surface (9) viewed in the direction of the central axis.

5. Key (1) according to claim 3 or 4, characterized in that the locating surface (12) is a flat surface extending perpendicular to the central axis (M); and / or that, viewed in the direction of the central axis (M), the locating surface (12) surrounds the control surface (9) on the outside; and / or that the control surface (9) is circular and that the locating surface (12) is concentric to the control surface (9).

6. Key (1) according to one of the preceding claims, characterized in that the side wall (11) is conical at least in sections, so that the diameter of the recess (10) becomes smaller with increasing distance from the outer side (5).

7. Key (1) according to one of the preceding claims, characterized in that the control element (7) comprises a bolt (17) arranged in a bore (16) in the key shank (4) and a spring element (18), in particular a compression spring, which applies a force to the bolt (17) that presses the control element (7) outwards as seen from the key shank (4), wherein the bolt (17) has said control surface (9); or that two control elements (7) and two associated recesses (10) are arranged, wherein each of the control elements (7) has a bolt (17) arranged in a bore (16) in the key shank (4), and wherein a spring element (18), in particular a compression spring, is arranged in the bore (16), wherein the bolts (17) are acted upon by the same spring element (18), wherein the control surface of the first bolt (17) lies in a first of said recesses (10) and wherein the control surface of the second bolt (17) lies in a second of said recesses (10).

8. Key (1) according to claim 7, characterized in that the bolt (17) is held by a sleeve (19) pressed into the bore (16) with a through opening (20) through which the bolt (17) extends.

9. Key according to claim 7 and one of claims 3 to 6, characterized in that the sleeve (19) is surrounded by the arrangement surface (12), in particular that the sleeve (19) has an outer diameter which corresponds to the inner diameter of the said arrangement surface (12), and / or that the sleeve (19) is located with respect to the arrangement surface (12) such that the sleeve (19) has no effect on the arrangement process of the further tumbler (13).

10. Key (1) according to one of claims 7 to 9, characterized in that the bolt (17) has a cylindrical, in particular a circular cylindrical, cross-section and / or that the bolt (17) has a cylindrical or conical guide pin (21) opposite the control surface (9), wherein the guide pin preferably projects into the said spring element.

11. Key (1) according to one of the preceding claims, characterized in that the shape of at least one of the control recesses (6) on the key shank (4) is identical or similar to the shape of said recess (10); and / or that the side wall (11) extends completely around the central axis (M), such that the recess (10) has no lateral opening; and / or that the control surface (9) is located at the deepest point of the recess (10); and / or that the recess (10) is open in the region of the outer side (5); and / or that the central axis (M) of the recess (10) extends at an angle of 90° to the longitudinal axis (L); and / or that the side wall (11) extends circularly around the central axis (M), wherein the diameter of the recess (10) preferably varies across the depth of the recess (10); and / or that the control surface (9) is designed as a planar or flat control surface.

12. Rotary locking cylinder (2) comprising a stator (22), a rotor (23) rotatably mounted in the stator (22) with a key channel (24), at least one tumbler (8) cooperating with a control element (7) movably mounted in a key shank (4) of a key (1), and at least one further tumbler (13), wherein the tumbler (8) cooperating with the control element (7) comprises a stator pin (25) arranged on the stator (22) and a rotor pin (26) arranged on the rotor (23), as well as a stator pin spring (27) acting on the stator pin (25), wherein the stator pin spring (27) applies a spring force to the stator pin (25) and the rotor pin (26) in the direction of the key channel (24), wherein the stator pin (25) and the rotor pin (26) are engaged at the end via a conical structure (28), and wherein the rotor pin (26) cooperates with the control element (7) in the key (1),wherein, due to the conical structure (28) between the stator pin (25) and the rotor pin (26), the control element (7) can be moved from a locked position into a release position when the rotor (23) is rotated by the key (1), and at the same time the stator pin (25) and the rotor pin (26) can be moved from a locked position into a release position, wherein the further tumbler (13) comprises a stator sleeve (29) movably mounted in the stator (22) and a rotor sleeve (30) movably mounted in the rotor (23), as well as a stator sleeve spring (31) acting on the stator sleeve (29), wherein the stator sleeve spring (31) applies a spring force to the stator sleeve (29) and the rotor sleeve (30) in the direction of the key channel (24), wherein the stator sleeve (29) and the rotor sleeve (30) are connected by an locating surface (12) on the key, can be moved from a locking position to a release position,and wherein the stator pin (25) is movably mounted in the stator sleeve (29) and the rotor pin (26) is movably mounted in the rotor sleeve (30)., 13. Rotary locking cylinder (2) according to claim 12, characterized in that the stator sleeve (29) and / or the rotor sleeve (30) is conically formed on the respective end face (32) with which the stator sleeve (29) and the rotor sleeve (30) are in contact with each other; such that the contact surface between the stator sleeve (29) and the rotor sleeve (30) is minimized.

14. Rotary locking cylinder (2) according to one of the preceding claims 12 to 13, characterized in that the stator pin (25) has a cylindrical outer surface (35) which, when the stator pin (25) is in the locked position, lies at the level of the dividing line between the stator (22) and the rotor (23); and / or that the rotor pin (26) has a cylindrical outer surface (39) which, when the rotor pin (26) is in an intermediate position, lies at the level of the dividing line between the stator (22) and the rotor (23); and / or that the stator sleeve (29) has a cylindrical outer surface (36) which, when the stator sleeve (29) is in the locked position, lies at the level of the dividing line (T) between the stator (22) and the rotor (23).

15. Rotary locking cylinder (2) according to one of the preceding claims 12 to 14, characterized in that both the tumbler (8) and the further tumbler (13) protrude into the key channel (24) in the locked position and are movable in the direction of the stator (22) when the key (1) is inserted and / or that the stator pin (25), the stator sleeve (29), the rotor pin (26) and the rotor sleeve (30) lie on a common axis.

16. Rotary locking cylinder (2) according to one of the preceding claims 12 to 15, characterized in that the stator sleeve (29) and the rotor sleeve (30) are movable radially outwards from the locked position into an intermediate position upon insertion of the key (1) by the contact of the stator sleeve (29) with the outside of the key (1), and that upon reaching the fully inserted position, the stator sleeve (29) and the rotor sleeve (30) are movable radially inwards from the intermediate position into the release position; and / or that the stator pin (25) and the rotor pin (26) are movable radially outwards from the locked position into an intermediate position upon insertion of the key (1) by the contact of the stator pin (25) with the outside (5) of the key (1), and that upon reaching the fully inserted position, the stator pin (25) and the rotor pin (26) are movable radially inwards from the intermediate position into the release position.

17. Rotary locking cylinder (2) according to claim 16, characterized in that the dimensioning of the key (1), the stator sleeve (29), the rotor sleeve (30), the stator pin (25) and the rotor pin (26) is selected such that during the movement from the locked position into the intermediate position both the stator sleeve (29) and the rotor sleeve (30) as well as the stator pin (25) and the rotor pin (26) pass through the release position, wherein the passing of the release position of the pairing of stator sleeve (29) and rotor sleeve (30) as well as the pairing of stator pin (25) and rotor pin (26) does not occur simultaneously due to the selected dimensioning.

18. Rotary locking cylinder (2) according to one of the preceding claims 12 to 17, characterized in that the rotor sleeve (30) has a rotor sleeve-side stop surface (33) and that the rotor pin (25) has a rotor pin-side stop surface (34), wherein when the rotor sleeve (30) is arranged, the rotor sleeve-side stop surface (33) is moved against the rotor pin-side stop surface (34) until the two stop surfaces (33, 34) are in contact with each other.

19. Rotary locking cylinder (2) according to claim 18, characterized in that the rotor sleeve (30) in the release position lies firmly between the arrangement surface (12) of the key (1) and the end face of the stator sleeve or the inner surface of the stator.

20. Rotary locking cylinder (2) according to one of the preceding claims 12 to 19, characterized in that the stator sleeve spring (31) provides a spring force which is greater than the spring force of the spring element (18) acting on the control element (7); and / or that the stator sleeve and the rotor sleeve are made of a material which has a greater hardness than the material of the stator and the rotor. 21 . Rotary locking cylinder (2) according to one of the preceding claims 12 to 20, characterized in that on the side of the rotor pin (26) the conical structure (28) is formed by a conical surface (44) running around the central axis (M) and in that on the side of the stator pin (25) the conical structure (28) is formed by a conical surface (45) running around the central axis (M), wherein the conical surface (44) of the rotor pin (26) is optionally adjoined by a shoulder surface (42) and wherein the conical surface (45) of the stator pin (25) is optionally adjoined by an edge section (43).

22. System comprising a rotary locking cylinder (2) according to one of claims 12 to 21 and a key (1) according to one of claims 1 to 11.

Images