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

TECHNICAL AREA

[0001] The present invention relates to a key according to claim 1 and a system comprising a key and a rotary locking cylinder according to claim 10. STATE OF THE ART

[0002] EP 0 621 384 discloses a key with a matching rotary lock cylinder. A control element is arranged in the shaft of the key, which works in conjunction with an additional locking mechanism of the rotor. DE 44 14 518 also discloses a key with movable indexing elements.

[0003] Although the keys and rotary locking cylinders are considered particularly tamper-proof according to EP 0 621 384, many feel the need to further increase the security against copying such a key or rotary locking cylinder by further increasing the query security.

[0004] From EP 2 844 811, another key with a matching rotary lock cylinder is known. 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 tumbler is engaged by a fixed scanning surface on the key, and the other tumbler is engaged by the movable control element. The latter engagement is a type of "floating" engagement controlled by the spring assemblies. Although EP 2 844 811 significantly increases the scanning security compared to EP 0 621 384, the design necessitates very precise manufacturing.

[0005] The key of EP 2 844 811 also has the disadvantage that the movable control element is poorly protected against rough mechanical impacts, for example, in the event of misuse or tampering. Furthermore, the clearly visible and protruding arrangement of the spring-loaded control element in the key generally makes it more vulnerable to key duplication. In addition, the protruding arrangement of the spring-loaded control element promotes mechanical wear on the control element. PRESENTATION OF THE INVENTION

[0006] Based on this prior art, the invention is based on the objective of providing a key that overcomes the disadvantages of the prior art. In particular, a preferred objective is to provide a key that has an active control element, wherein the key is advantageously designed, especially with regard to robustness and / or security.

[0007] The object of claim 1 solves these and other problems. Accordingly, a key for a rotary lock cylinder comprises a key handle and a key shaft adjoining the key handle, the shaft extending along a longitudinal axis. The key shaft includes, on its outer surface, control recesses, in particular control bores, for engaging tumblers on the rotary lock cylinder and at least one control element movably arranged in the key shaft. The control element has a control surface that interacts with a tumbler of the rotary lock cylinder. When interacting with the tumbler, the control element is movable from a starting position to an engagement position. The key shaft has a recess for the control element, which extends into the key shaft from the outside. The recess is laterally surrounded by a side wall that extends around a central axis.The control surface of the control element is located in the aforementioned recess.

[0008] By positioning the control element within the recess, the advantage is gained that the key shaft is not excessively weakened, as would be the case with a recess extending through the key shaft. The recess is surrounded by parts of the shaft, and any weakening is solely due to the recess itself. Consequently, by positioning the control element within the recess, its functionality can be maintained while preserving, or only minimally reducing, the stability and robustness of the key shaft.

[0009] By placing the control element in the recess, the advantage is that the control element is more discreetly positioned for the viewer. When looking at the key, the viewer only perceives a recess and does not recognize the control element at first glance.

[0010] The control surface is located within the recess. This means that the control surface lies inside the recess. It is not located outside the recess. In other words, from the outside, the control surface is recessed into the key shaft. Therefore, the control surface and the control element are well protected from external influences by the side wall.

[0011] The depression is preferably a bore.

[0012] Preferably, the control element is arranged in the area of ​​the key tip. Preferably, one control element is arranged. Alternatively, it is also conceivable that two or more control elements are arranged.

[0013] Preferably, when the control element is in its initial position, the control surface forms the base of the recess. Viewed in a plane spanned by the control surface, the diameter of the side wall corresponds essentially to the diameter of the control surface. The side wall extends from the base or control surface towards the outside.

[0014] The control surface thus forms the base or bottom of the depression. By giving the control surface the same diameter as the base, its presence is further concealed, because the transition between the control surface and the side wall lies at a point where an edge would be visible anyway due to the transition from the control surface to the bottom of the borehole.

[0015] Preferably, the recess has an alignment surface that cooperates with a further locking mechanism of the rotary locking cylinder and extends around the central axis in a ring-shaped area, in particular in a circular area.

[0016] The alignment surface has an inner diameter and an outer diameter, with the alignment surface extending between the inner and outer diameters. If the alignment surface is shaped like a ring, the inner and outer diameters are concentric with each other.

[0017] The engagement surface, like the control surface, is arranged in the recess. Preferably, the engagement surface is an integral part of the key shaft.

[0018] The recess with the alignment surface is preferably a stepped bore. The stepped bore can be produced very easily with a suitable drilling tool.

[0019] The control surface is preferably located concentrically to the alignment surface.

[0020] Preferably, a first section of the side wall extends from the insertion surface to the outside of the key shaft and a second section of the side wall extends from the insertion surface to the control surface of the control element.

[0021] The first section extends outwards from the outer diameter of the insertion surface, and the second section extends inwards from the inner diameter of the insertion surface. By arranging the insertion surface inside the recess, a further advantage is gained: the insertion surface is protected by the side wall, particularly by the first section of the side wall.

[0022] Preferably, the control surface is positioned deeper in the recess than the engagement surface. In other words, the control surface is offset inwards relative to the engagement surface in the recess, viewed along the central axis. This inward offset offers the advantage that the control element lies deeper in the key shaft and is therefore well protected against mechanical impacts.

[0023] Preferably, the distance between the outer surface and the insertion surface, viewed along the central axis, is greater or less than the distance between the insertion surface and the control surface, viewed along the central axis. Alternatively, the distance between the outer surface and the insertion surface, viewed along the central axis, is equal to the distance between the insertion surface and the control surface, viewed along the central axis.

[0024] Preferably, the alignment surface is a flat surface that runs perpendicular to the central axis. Preferably, viewed in the direction of the central axis, the alignment surface surrounds the control surface on the outside.

[0025] Preferably, the control surface is circular and the placement surface is concentric to the control surface. In other words, the placement surface extends concentrically around the control surface.

[0026] 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.

[0027] The conical shape of the side wall sections has the advantage of automatically centering the locking elements between the recesses. This is particularly beneficial for locking element elements with small cross-sections.

[0028] Preferably, the aforementioned first section extends conically to the insertion surface, and the aforementioned second section extends conically to the control surface. The design of the side wall with conical sections offers the advantage that transitions can be created in the recess which are beneficial with regard to stability. In particular, the angular transitions reduce any notch effects.

[0029] According to a first embodiment of the invention, the control element comprises a bolt arranged in a bore in the key shaft and a spring element, in particular a compression spring. Preferably, the spring element exerts a force on the bolt that pushes the control element outwards from the key shaft. The bolt has the aforementioned control surface. Preferably, the recess and the bore are arranged concentrically to each other.

[0030] According to a second embodiment of the invention, two control elements and two associated recesses are arranged. Each of the control elements has a bolt arranged in a bore in the key shaft. A spring element, in particular a compression spring, is arranged in the bore. The bolts are acted upon by the same spring element, with the control surface of the first bolt lying in a first of the aforementioned recesses and the control surface of the second bolt lying in a second of the aforementioned recesses.

[0031] In the second variant mentioned, the recesses are arranged opposite each other on opposite sides of the key when viewed along the longitudinal axis. Preferably, the recesses are located on the narrow sides of the key. The recesses and the bore are preferably arranged concentrically to each other.

[0032] In both variants, the bolt, or at least one of the bolts, is held by a sleeve pressed into the bore, the sleeve having a through-opening through which the bolt extends. When two bolts are arranged, one bolt can be held by a step in the bore, and the other by the sleeve.

[0033] Preferably, the through-opening provides a section of said recess; in particular, such that the control surface lies within said section. Preferably, the sleeve is positioned relative to the engagement surface in such a way that the sleeve has no effect on the engagement process of the subsequent locking mechanism.

[0034] Preferably, the sleeve is surrounded by the insertion surface, in particular that the sleeve has an outer diameter which corresponds to the inner diameter of said insertion surface.

[0035] Preferably, an end face of the sleeve is offset towards the longitudinal axis with respect to the insertion surface or arranged flush with the insertion surface.

[0036] Preferably, the sleeve is positioned relative to the insertion surface in such a way that the sleeve has no effect on the insertion process of the further locking mechanism.

[0037] In other words, the sleeve only secures the corresponding bolt and has no influence on the engagement of the subsequent locking mechanism, which is engaged by the engagement surface. This has the advantage that the sleeve is not used for the engagement process. The engagement of the subsequent locking mechanism is carried out solely by the engagement surface, which is fixed to the key and is part of the key.

[0038] Preferably, the bolt has a cylindrical, in particular a circular cylindrical, cross-section.

[0039] Preferably, the bolt has a cylindrical or conical guide pin opposite the control surface. The guide pin preferably projects into the spring element, in particular the compression spring. The projection of the guide pin into the spring element has the advantage of centering the spring element in the bore.

[0040] Preferably, the shape of at least one of the control recesses on the key shaft is identical or similar to the shape of said recess. This offers the advantage of further concealing the position of the control element.

[0041] Preferably, the side wall extends completely around the central axis, such that the recess has no lateral opening.

[0042] Preferably, the control surface is located at the deepest point of the recess. Preferably, the recess is open on its outer side, allowing free access for the locking mechanisms. The central axis of the recess preferably runs at an angle of 90° to the longitudinal axis. Preferably, the side wall extends circularly around the central axis, with the diameter of the recess preferably varying over its depth. Preferably, the control surface is designed as a flat surface running at an angle of 90° to the central axis of the recess.

[0043] Based on this state of the art, the invention is based on the objective of providing a rotary locking cylinder which is even more secure with regard to manipulation attempts.

[0044] This and other tasks are solved by a system according to claim 10. Accordingly, a system comprises a key as described above and a rotary locking cylinder, a stator, a rotor rotatably mounted in the stator with a key channel, at least one locking element cooperating with the control element movably mounted in the key shaft of the key, and at least one further locking element.

[0045] The locking mechanism, which works in conjunction with the control element, comprises a stator pin located on the stator and a rotor pin located on the rotor, as well as a stator pin spring acting on the stator pin. The stator pin spring exerts a spring force on the stator pin and the rotor pin in the direction of the keyway. The stator pin and the rotor pin engage at their ends via a conical structure. The rotor pin interacts with the control element in the key. Due to the conical structure between the stator pin and the rotor pin, when the rotor is rotated by the key, the rotor pin can move the control element from a neutral position to an engagement position. This movement simultaneously moves the stator pin and the rotor pin from a locked position to a released position.The entire assembly, consisting of the stator pin, rotor pin, and control element, is thus moved towards the key, with the rotor pin and control element moving into the key so that the rotor pin comes to lie below the dividing line between the rotor and stator. The locking mechanism further comprises a stator sleeve movably mounted within the stator and a rotor sleeve movably mounted within the rotor, as well as a stator sleeve spring acting on the stator sleeve. The stator sleeve spring exerts a spring force on the stator sleeve and the rotor sleeve in the direction of the keyway. The stator sleeve and the rotor sleeve can be moved from a locked position to a released position by means of an engagement surface on the key. The stator pin is movably mounted within the stator sleeve, and the rotor pin is movably mounted within the rotor sleeve.

[0046] The arrangement of the aforementioned pins within the aforementioned sleeves offers the advantage that all the elements to be inserted lie on a common axis, simplifying their insertion when using an authorized key. Furthermore, the more complex design of the locking mechanisms themselves makes manipulation more difficult for unauthorized operations, such as lock picking. Such manipulation would require inserting both the pins and the sleeves simultaneously, a process made significantly more challenging by the described structure.

[0047] In the release position, the rotor pin and the stator pin are positioned such that the rotor pin lies below the separation line between the rotor and stator, and the stator pin lies above the separation line between the rotor and stator. Viewed in cross-section through the central axis, the separation line is a line formed between the rotor and stator.

[0048] The rotary lock cylinder described herein is preferably operated with the key described herein. The rotary lock cylinder and the key described herein form a corresponding system. Other versions may also use different keys.

[0049] On the rotor pin side, the conical structure is formed by a conical surface that surrounds the central axis and is located on the outside. On the stator pin side, the conical structure is formed by a conical surface that surrounds the central axis and is located on the inside.

[0050] Preferably, the stator sleeve and / or the rotor sleeve is conically shaped at the respective end faces where the stator sleeve and the rotor sleeve are in contact with each other, such that the contact area between the stator sleeve and the rotor sleeve is minimized.

[0051] Preferably, the stator sleeve has an inner surface and an outer surface, wherein the inner surface and / or the outer surface are conical.

[0052] 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 also 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 blockage of the rotor's rotational movement.

[0053] Preferably, both the locking pin and the further locking pin protrude into the keyway in the locking position and are movable towards the stator when the key is inserted.

[0054] Preferably, when the key is inserted, the stator sleeve and the rotor sleeve are movable from the locked position radially outwards into an intermediate position by 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 inwards from this intermediate position into the release position.

[0055] Preferably, when the key is inserted, the stator pin and the rotor pin are movable from the locking position radially outwards into an intermediate position by means of contact between the stator pin and the outside of the key, and upon reaching the fully inserted position, the stator pin and the rotor pin are movable radially inwards from the intermediate position into the release position.

[0056] The combination of stator sleeve / rotor sleeve and the combination of stator pin / rotor pin are particularly preferred, moved radially outwards into the intermediate position and then radially inwards for alignment.

[0057] Preferably, the dimensions of the key, stator sleeve, rotor sleeve, stator pin, and rotor pin are selected such that, during movement from the locked position to the intermediate position, both the stator sleeve and rotor sleeve, as well as the stator pin and rotor pin, pass through the release position, whereby, due to the selected dimensions, the passage through the release position of the stator sleeve / rotor sleeve pair and the stator pin / rotor pin pair does not occur simultaneously. This ensures that, during movement into the intermediate position, one of the pairs is always in the locked position.

[0058] 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, wherein, during the engagement of the rotor sleeve, the stop surface on the rotor sleeve side is moved against the stop surface on the rotor pin side until the two stop surfaces are in contact with each other. During engagement in the release position, the rotor pin moves to a stop against the rotor sleeve.

[0059] Preferably, the rotor sleeve is fixed in the release position between the insertion surface of the key and the end face of the stator sleeve or the inner surface of the stator.

[0060] Preferably, the stator sleeve spring provides a spring force that is greater than the spring force of the spring element acting on the control element.

[0061] 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. Preferably, the stator sleeve and rotor sleeve are made of the same material. Preferably, the stator sleeve and / or the rotor sleeve are made of hardened steel.

[0062] Preferably, on the rotor pin side, the conical structure is formed by a conical surface circumferentially around the central axis, and on the stator pin side, the conical structure is formed by a conical surface circumferentially around the central axis. Optionally, a shoulder surface adjoins the conical surface of the rotor pin.

[0063] Optionally, a marginal section adjoins the conical surface of the stator pin. Preferably, the shoulder surface is positioned such that it lies at the level of the dividing line between the rotor and stator.

[0064] Further embodiments are specified in the dependent claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] Preferred embodiments of the invention are described below with reference to the drawings, which serve only for illustration and are not to be interpreted restrictively. The drawings show: Fig. 1a a perspective view of a key according to a preferred embodiment of the present invention with a control element; Fig. 1b a detailed view of the Figur 1a ; Fig. 2a a sectional view of the front part of the key according to the Figure 1a / 1b in the area of ​​the control element; Fig. 2 leg detail view of the Figur 2aFig. 3a shows a sectional view through a rotary locking cylinder with a rotor, a stator, a locking pin and a further locking pin according to an embodiment of the present invention, wherein the section runs transversely to the axis of rotation of the rotor; Fig. 3b shows a sectional view of the rotary locking cylinder according to Figur 3a , where the section passes through the axis of rotation of the rotor; Fig. 4 a sectional view of the rotary lock cylinder according to the preceding figures during the insertion of the key according to the preceding figures; Fig. 5 a sectional view of the rotary lock cylinder according to Figure 4 with the key inserted further; Figs. 6a-6c Sectional views of the rotary locking cylinder according to Figure 4 with the key fully inserted; Fig. 7a a sectional view according to Figur 6c with the key fully inserted during the turning of the key; Fig. 7 sectional view according to Figuren 6c / 7awith the key during advanced rotation; Fig. 8a a sectional view of the front part of a key according to a further development of the invention; Fig. 8b a detailed view of the Figur 2a Fig. 9a / b Sectional views through a rotary locking cylinder according to a further development of the invention; Fig. 10 A sectional view of the rotary locking cylinder according to Fig. 9a / b with the key after the Figure 8a / b with the key fully inserted; and Fig. 11 a sectional view according to Figur 11 with the key during advanced rotation. DESCRIPTION OF PREFERRED EXECUTION FORMS

[0066] In the Figures 1a to 2b Various views of a key 1 are shown. The key 1 is preferably used to operate a rotary locking cylinder 2 according to Figures 3a to 7c. In the Figuren 8a bis 11 A further development of key 1 and rotary lock cylinder 2 is shown, where identical parts bear the same reference numerals.

[0067] The key 1 comprises a key handle 3 and a key shaft 4 adjoining the key handle 3, extending along a longitudinal axis L. The key shaft 4 has on its outer surface 5 a plurality of control recesses 6, in particular control bores, for engaging tumblers on the rotary cylinder 2. In the interaction between the tumblers and the control bores, the tumblers are engaged by the control bore in a known manner, such that the tumblers are moved from a locked position to a released position.

[0068] Furthermore, the key 1 comprises at least one control element 7 movably arranged in the key shaft 4. The control element 7 is movably mounted relative to the key shaft 4. The control element 7 has a control surface 9 that interacts with a locking pin 8 of the rotary locking cylinder 2. When interacting with the locking pin 8, the control element 7 can be moved from a starting position to an engagement position. During this movement, the control element 7 is moved relative to the key shaft 4.

[0069] The key shaft 4 has a recess 10 for the control element 7. The recess 10 extends from the outer side 5 into the key shaft 4. The recess 10 is laterally surrounded by a side wall 11 that extends 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.

[0070] The recess 10 is open to the outside. The central axis M of the recess extends substantially perpendicular to the longitudinal axis L. The recess 10 is preferably designed as a bore, particularly preferably as a stepped bore.

[0071] In the illustrated embodiment, the control surface 9 forms the base 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. "Essentially" means that there is a slight clearance of a few hundredths of a millimeter between the diameter D9 and the diameter D11. This is indicated by the visible gap in the Figur 2b , which represents a significant increase in the effective key size. The side wall 11 extends from the base or 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 shown in the Figur 2b symbolized by the arrow P.

[0072] In the illustrated embodiment, the recess 10 further comprises an insertion surface 12. The insertion surface 12 serves to insert a further locking pin 13 of the rotary locking cylinder 2. The arrangement of the further locking pin 13 in relation to the aforementioned locking pin 6 is explained in more detail below. The insertion surface 12 extends in a ring-shaped area around the central axis M. The insertion surface 12 is spaced apart from the control surface 9 in the direction of the central axis M and forms an integral part of the key shaft 4. The insertion surface 12 is concentric with the central axis M. The control surface 9 lies deeper in the recess than the insertion surface 12.

[0073] Starting from the insertion surface 12, the side wall 11 extends in both directions. A first section 14 of the side wall 11 extends from the insertion surface 12 to the outer side 5 of the key shaft 4. A second section 15 of the side wall 11 extends from the insertion surface 12 to the control surface 9 of the control element 7. In the illustrated embodiment, both sections 14 and 15 are conical, so that the diameter of each section decreases with increasing distance from the outer side.

[0074] Viewed along the central axis M, the distance A1 between the outer surface 5 and the classification surface 12 is greater or less than the distance A2, viewed along the central axis, between the classification surface 12 and the control surface 9. Alternatively, the two distances can also be equal. By varying the distances under different keys, the number of permutations can be increased.

[0075] The classification area 12 is a flat surface that runs perpendicular to the central axis M. The flat surface has the outer shape of a circle.

[0076] With reference to the Figur 2aThe particularly preferred embodiment of the control element 7 in the key will now be explained. In the illustrated embodiment, two control elements 7 and two associated recesses 10 are arranged. The recesses 10 are located opposite each other on the narrow sides of the key shaft 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 shaft 4, with one bolt 17 being assigned to each recess 10. 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 the aforementioned recesses 10, and the control surface 9 of the second bolt 17 lies in a second of the aforementioned recesses 10.

[0077] One of the bolts, here bolt 17, is held by a sleeve 19 pressed into the bore 16, the sleeve having a through-opening 20 through which the bolt 17 extends. The other bolt 17 abuts a step 37 of the bore 15. Both bolts 17 have a flange 38 extending perpendicularly from the bolt 17, with the flange 38 abutting either the sleeve 19 or the step 37.

[0078] The sleeve 19 is surrounded by the engagement surface 12. In particular, the sleeve 19 has an outer diameter that corresponds to the inner diameter of the engagement surface 12. Preferably, the sleeve 19 is positioned relative to the engagement surface 12 such that it does not affect the engagement process of the further locking element 13. That is, the sleeve 19 does not project beyond the engagement surface 12 from the bore 16.

[0079] 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, the guide pin preferably projecting into the spring element.

[0080] 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.

[0081] With reference to Figures 3a to 7c, a preferred embodiment of the rotary locking cylinder 2 according to the present invention is now described. The rotary locking cylinder 2 is preferably operated with the key 1 described herein.

[0082] 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 locking pin 8 cooperating with the control element 7 movably mounted in the key shaft 4 of the key 1 and at least one further locking pin 13.

[0083] The locking device 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 exerts a spring force on the stator pin 25 and the rotor pin 26 in the direction of the keyway 24, with the stator pin 25 and the rotor pin 26 engaging at their end faces 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 shaped to match the conical recess 40.

[0084] The further locking mechanism 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 exerts a spring force on the stator sleeve 29 and the rotor sleeve 30 in the direction of the keyway 24. In the illustrated embodiment, the stator sleeve 29 and the rotor sleeve 30 can be moved from a locked position to a released position by the engagement 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.

[0085] In the Figuren 3a and 3bThe 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 towards 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.

[0086] In the Figure 4 The insertion of key 1 is shown. The front of the key shaft 4 of key 1 comes into contact with the rotor pin 26 of the locking pin 8 and with the rotor sleeve 30 of the further locking pin 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 their locked position by the insertion of the key and move radially away from the longitudinal axis L or from the keyway 24 towards the stator.

[0087] In the Figure 5An intermediate position is shown between the two locking devices 9 and 13. During the movement into this intermediate position, the stator pin 25 and the rotor pin 26, as well as the stator sleeve 29 and the rotor sleeve 30, with their respective contact surfaces, pass the dividing line T. In the intermediate position, the rotor sleeve 30 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.

[0088] The dimensions of key 1, stator sleeve 29, rotor sleeve 30, stator pin 25, and rotor pin 26 are selected such that, during the movement from the locked position to the intermediate position, both stator sleeve 29 and rotor sleeve 30, as well as stator pin 25 and rotor pin 26, pass through the release position. However, due to the selected dimensions, the passage through the release position of the pairing of stator sleeve 29 and rotor sleeve 30, and of the pairing of stator pin 25 and rotor pin 26, does not occur simultaneously. Starting from the intermediate position, the locking mechanism 9, 13 is then engaged in the release position. During this process, stator sleeve 29, rotor sleeve 30, stator pin 25, and rotor pin 26 are moved radially inward from the intermediate position.

[0089] The release situation will be in the Figures 6a, 6b and 6cshown. In the release position, the rotor sleeve 30 is in contact with the engagement 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 is completely embedded in the stator 22. Starting from the point shown in the Figures 6a, 6b , 6c In the release position shown, the rotor 23 can be pivoted relative to the stator 22 using the key 1. During this pivoting, the rotor pin 26 is moved towards the longitudinal axis L due to the conical structure 28, pushing the control element 9 from its initial position into its engagement position. Figur 7a The figure 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. Figur 7bThe rotor 23 is shown in another position, in which the contact between rotor pin 26 and stator pin 25 is completely broken. The rotor 23 can rotate freely.

[0090] With reference to the Figuren 3a bis 7b Further optional features of the rotary locking cylinder 2 will now be shown.

[0091] The stator sleeve 29 and / or the rotor sleeve 30 are conically shaped at their respective end faces 32, where the stator sleeve 29 and the rotor sleeve 30 are in contact with each other. The conical shape is such that the contact area between the stator sleeve 29 and the rotor sleeve 30 is minimized.

[0092] 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 stator 22 and rotor 23. Likewise, the rotor pin 26 has a cylindrical outer surface 39 which, in the intermediate position, lies at the level of the dividing line between stator 22 and 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 stator 22 and rotor 23.

[0093] Both the locking pin 8 and the further locking pin 13 protrude into the key channel 24 in the locking position and, as described above, can be moved towards the stator 22 when the key 1 is inserted.

[0094] In the illustrated embodiment, 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.

[0095] The rotor sleeve 30 is fixed in the release position between the engagement surface 12 of the wrench 1 and the end face of the stator sleeve or the inner surface of the stator. This is shown in the Figuren 7a / 7b shown.

[0096] 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.

[0097] In the Figure 8a and 8b A further development of the key 1 described above is shown. Key 1 according to the Figure 8a and 8bdiffers from the other key by the position of the control surface 9. Otherwise, key 1 is identical to the key according to the Figures 1 to 7 The control surface 9 is located deeper in the key shaft 4 than in the embodiment according to the Figures 1 to 7 Viewed in the direction of the central axis M, the distance A1 between the outer surface 5 and the alignment surface 12 is smaller in this further development than the distance A2, viewed in the direction of the central axis, between the alignment surface 12 and the control surface 9. The lower control surface 9 has the particular advantage that greater flexibility for the movements of the stator sleeve 29 and rotor sleeve 30 can be achieved during alignment. This is in conjunction with the stator pin 25 and the rotor pin 26.

[0098] In the Figures 9 to 11This is 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 their ends 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 shaped to match the conical recess 40. The conical counterpart has a conical surface. A shoulder surface 42 adjoins the conical counterpart 41, extending away from the conical counterpart 41 essentially perpendicular to the central axis M. An edge section 43 adjoins the conical recess 40.The edge section 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 in the alignment position, as shown in the [reference]. Figure 10 shown such that the shoulder surface 42 lies at the level of the dividing line between rotor 23 and stator 22. REFERENCE MARK LIST

[0099] 1 Key 2 Rotary lock cylinder 3 Key handle 4 Key shaft 5 Exterior 6 Control recesses 7 Control element 8 Tumbler 9 Control surface 10 Recess 11 Side wall 12 Insertion surface 13 Additional tumbler 14 First section 15 Second section 16 Bore 17 Bolt 18 Spring element 19 Sleeve 20 Through opening 21 Guide pin 22 Stator 23 Rotor 24 Keyway 25 Stator pin 26 Rotor pin 27 Stator pin spring 28 Conical structure 29 Stator sleeve 30 Rotor sleeve 31 Stator sleeve spring 32 End face 33 Rotor sleeve-side stop surface 34 Rotor pin-side stop surface 35 Cylindrical outer surface, stator pin 36 Cylindrical outer surface, stator sleeve 37 Step 38 Flange 39 Cylindrical outer surface, rotor pin 40 Conical recess 41 Conical counterpart 42 Shoulder surface 43 Edge section 44 Conical surface of 26 45 Conical surface of 25 M Central axis L Longitudinal axis D9 Diameter D11 Diameter T Dividing line

Claims

1. Key (1) for a rotary lock cylinder (2) comprising a key handle (3) and a key shank (4) connected to the key handle (3), which extends along a longitudinal axis (L), wherein the key shank (4) comprises on its outer side (5) control recesses (6), in particular control bores, for aligning tumblers on the rotary lock cylinder (2) and at least one control element (7) movably arranged in the key shank (4), the control element (7) comprising a control surface (9) cooperating with a tumbler (8) of the rotary lock cylinder (2), wherein the control element (7) can be moved from an initial position into an alignment position when cooperating with the tumbler (8), wherein the key shank (4) comprises a pocket (10) for the control element (7), which extends from the outer side (5) into the key shank (4) and which is surrounded laterally by a side wall (11) extending around a central axis (M), and that the control surface (9) of the control element (7) is located in the aforementioned pocket (10), 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, the spring element (18) exerting a force on the bolt (17) which pushes the control element (7) outwards as seen from the key shank (4), wherein the bolt (17) comprises the said control surface (9); or that two control elements (7) and two associated pockets (10) are arranged, wherein each of the control elements (7) comprises 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 the aforementioned pockets (10) and wherein the control surface of the second bolt (17) lies in a second of the aforementioned pockets (10).

2. Key (1) according to claim 1, characterized in that, when the control element (7) is in the initial position, the control surface (9) forms the base surface of the pocket (10), wherein the diameter (D11) of the side wall (11), viewed in a plane defined 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) toward the outer side (5).

3. Key (1) according to claim 1 or 2, characterized in that the pocket (10) comprises an alignment surface (12) which cooperates with an additional tumbler (13) of the rotary lock cylinder (2) and which extends around the central axis (M) in the form of an annular surface, in particular a circular annular surface.

4. Key (1) according to claim 3, characterized in that 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) and 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); and / or that the control surface (9) lies deeper in the pocket (10) than the alignment surface (12); and / or that, viewed in the direction of the central axis (M), the distance between the outer side (5) and the alignment surface (12) is greater or smaller than the distance between the alignment surface (12) and the control surface (9) viewed in the direction of the central axis; or that, viewed in the direction of the central axis (M), the distance between the outer side (5) and the alignment surface (12) is equal to the distance between the alignment surface (12) and the control surface (9) as seen in the direction of the central axis.

5. Key (1) according to claim 3 or 4, characterized in that the alignment surface (12) is a flat surface which is perpendicular to the central axis (M); and / or that, viewed in the direction of the central axis (M), the alignment surface (12) surrounds the control surface (9) on the outside; and / or that the control surface (9) is circular and that the alignment surface (12) is concentric with 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 pocket (10) becomes smaller with increasing distance from the outer side (5).

7. Key (1) according to any one of the preceding claims, characterized in that the bolt (17) is held in place by a sleeve (19) pressed into the bore (16) with a through-opening (20) through which the bolt (17) extends; and / or that the sleeve (19) is radially surrounded by the alignment surface (12), in particular that the sleeve (19) comprises an outer diameter which corresponds to the inner diameter of the alignment surface (12), and / or that the sleeve (19) is positioned relative to the alignment surface (12) in such a way that the sleeve (19) has no effect on the alignment process of the additional tumbler (13).

8. Key (1) according to any one of the preceding claims, characterized in that the bolt (17) has a cylindrical, in particular a circular cylindrical, cross-section and / or that the bolt (17) comprises a cylindrical or conically configured guide pin (21) towards the control surface (9), wherein the guide pin preferably protrudes into the spring element.

9. 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 the pocket (10); and / or the side wall (11) extends completely around the central axis (M) such that the pocket (10) does not comprise any lateral opening; and / or the control surface (9) is located at the deepest point of the pocket (10); and / or that the pocket (10) is open in the area of the outer side (5); and / or that the central axis (M) of the pocket (10) runs 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 pocket (10) preferably varies over the depth of the pocket (10); and / or the control surface (9) is a planar or flat control surface.

10. System comprising a rotary lock cylinder (2) and a key (1) according to one of the claims 1 to 9, wherein the rotary lock cylinder (2) comprises a stator (22), a rotor (23) rotatably mounted in the stator (22) with a keyway (24), at least one tumbler (8) cooperating with the control element (7) movably mounted in the key shank (4) of the key (1), and at least one additional 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) acts on the stator pin (25) and the rotor pin (26) with a spring force in the direction of the keyway (24), wherein the stator pin (25) and the rotor pin (26) are engaged at the front 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), when the key (1) causes the rotor (23) to rotate, the rotor pin (26) can move the control element (7) from a locked position to an unlocked position and, at the same time, the stator pin (25) and the rotor pin (26) can be moved from a locked position to an unlocked position, wherein 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), wherein the stator sleeve spring (31) acts on the stator sleeve (29) and the rotor sleeve (30) with a spring force in the direction of the keyway (24), wherein the stator sleeve (29) and the rotor sleeve (30) can be aligned from a locked position to an unlocked position by means of an alignment surface (12) on the key, 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).

11. System according to claim 10, characterized in that the stator sleeve (29) and / or the rotor sleeve (30) is / are conically shaped at the respective end face (32) with which end faces (32) the stator sleeve (29) and the rotor sleeve (30) are in contact with each other; such that the contact area between the stator sleeve (29) and the rotor sleeve (30) is minimized.

12. System according to one of the preceding claims 10 to 11, characterized in that the stator pin (25) comprises a cylindrical outer surface (35) which, when the stator pin (25) is in the locked position, is located at the level of the separation line between the stator (22) and the rotor (23); and / or that the rotor pin (26) comprises a cylindrical outer surface (39) which, when the rotor pin (26) is in an intermediate position, is located at the level of the separation line between the stator (22) and the rotor (23); and / or that the stator sleeve (29) comprises a cylindrical outer surface (36) which, when the stator sleeve (29) is in the locked position, is located at the level of the separation line (T) between the stator (22) and the rotor (23).

13. System according to one of the preceding claims 10 to 12, characterized in that both the tumbler (8) and the additional tumbler (13) protrude into the keyway (24) in the locked position and, when the key is inserted (1), are movable in the direction of the stator (22) 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.

14. System according to one of the preceding claims 10 to 13, characterized in that the stator sleeve (29) and the rotor sleeve (30) can be moved radially outwards from the locked position into an intermediate position when the key (1) is inserted by the contact of the stator sleeve (29) with the outside of the key (1), and that when the fully inserted position is reached, the stator sleeve (29) and the rotor sleeve (30) can be moved radially inwards from the intermediate position into the unlocked position; and / or that the stator pin (25) and the rotor pin (26) can be moved radially outward from the locked position into an intermediate position by the contact of the stator pin (25) with the outer side (5) of the key (1) when the key (1) is inserted, and that when the fully inserted position is reached, the stator pin (25) and the rotor pin (26) can be moved radially inward from the intermediate position into the unlocked position.

15. System according to claim 14, characterized in that 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, when moving 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 the unlocked position, wherein the passing of the unlocked position of the pairing of the stator sleeve (29) and the rotor sleeve (30) and the pairing of the stator pin (25) and the rotor pin (26) does not occur simultaneously due to the selected dimensions.

16. System according to one of the preceding claims 10 to 15, characterized in that the rotor sleeve (30) comprises an abutment surface (33) on the rotor sleeve side and the rotor pin (25) comprises an abutment surface (34) on the rotor pin side (34), wherein, when the rotor sleeve (30) is aligned, the abutment surface (33) on the rotor sleeve side is moved against the abutment surface (34) on the rotor pin side until the two abutment surfaces (33, 34) are in contact with each other.

17. System according to claim 16, characterized in that the rotor sleeve (30) lies in the unlocked position firmly between the alignment surface (12) of the key (1) and the end face of the stator sleeve or the inner surface of the stator.

18. System according to one of the preceding claims 10 to 17, 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 comprises a greater hardness than the material of the stator and the rotor.

19. System according to one of the preceding claims 10 to 18, characterized in that on the side of the rotor pin (26), the conical structure (28) is formed by a conical surface (44) extending around the central axis (M), and that on the side of the stator pin (25), the conical structure (28) is formed by a conical surface (45) extending around the central axis (M), wherein, optionally, the conical surface (44) of the rotor pin (26) is adjoined by a shoulder surface (42) and wherein, optionally, the conical surface (45) of the stator pin (25) is adjoined by a rim section (43).

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