Key and rotary lock cylinder with key
Patent Information
- Application Number
- AE202603138
- Authority / Receiving Office
- AE · AE
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2024-03-20
- Filing Date
- 2024-11-08
Smart Images
Figure ABST_ABST
Abstract
Description
Title Key and rotary lock cylinder with key technical field The present invention relates to a key according to claim 1 and a rotary lock cylinder according to claim 12, as well as a system with a key and a rotary lock cylinder according to claim 21. prior art 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 cooperates with an additional tumbler of the rotor. Although the keys and rotary lock cylinders according to EP 0 621 384 are considered to be particularly tamper-proof, there is a need for many to further increase the security against copying such a key or rotary lock cylinder by further increasing the key interrogation security. EP 2 844 811 discloses another key with a matching rotary lock cylinder. The key according to EP 2 844 811 comprises a control element that cooperates with a tumbler on the rotary lock cylinder. In one embodiment of EP 2 844 811, two tumblers are arranged in combination with each other. One of the tumblers is aligned by a fixed interrogation surface on the key and the other tumbler is arranged by the movable control element. The latter arrangement is a kind of "floating" arrangement, which is controlled by the spring assemblies. Even though EP 2 844 811 greatly increases key interrogation security compared to EP 0 621 384, the type of design requires very precise manufacturing. The key of EP 2 844 811 also comprises the disadvantage that the movable control element is poorly protected against rough mechanical influences, for example in the event of incorrect use or faulty manipulation. In addition, the clearly visible and protruding arrangement of the spring-loaded control element in the key means that the risk of key copying is generally rather high. In addition, the protruding arrangement of the spring-loaded control element promotes mechanical wear on the control element. summary of the invention Based on this prior art, the object of the invention is to specify a key that overcomes the disadvantages of the prior art. In particular, a preferred object is to specify a key that comprises an active control element, wherein the key is configured in a preferred manner. This applies in particular to robustness and / or security. These and other objects are solved by the subject matter according to claim 1. Accordingly, a key for a rotary lock cylinder comprises a key handle and a key shank connected to the key handle, which extends along a longitudinal axis. The key shank comprises control recesses, in particular control bores, on its outer side for the arrangement of tumblers on the rotary lock cylinder and at least one control element movably arranged in the key shank. The control element comprises a control surface that cooperates with a tumbler of the rotary lock cylinder. When cooperating with the tumbler, the control element can be moved from an initial position into an alignment position. The key shank comprises a pocket for the control element, which extends into the key shank from the outside. The pocket 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 pocket. The arrangement of the control element in the pocket has the advantage that the key shank is not excessively weakened, as would be the case with a recess extending through the key shank. The pocket is surrounded by parts of the shaft and weakening only occurs due to the pocket. Consequently, the arrangement of the control element in the pocket allows the functionality of the control element to be achieved while maintaining or only slightly weakening the stability and robustness of the key shaft. The arrangement of the control element in the pocket has the advantage that the control element is arranged in a more discreet manner for the observer. When looking at the key, the observer only notices a pocket and does not recognize the control element at first glance. The control surface is located in the pocket. This means that the control surface is located inside or within the pocket. The control surface is not located outside the pocket. This means that, when viewed from the outside, the control surface is recessed into the key shank. Thus, the control surface and also the control element are well protected from external influences by the side wall. The pocket is preferably a bore. The control element is preferably arranged in the area 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. Preferably, when the control element is in its initial position, the control surface forms the base of the pocket. Viewed in a plane defined by the control surface, the diameter of the side wall corresponds substantially to the diameter of the control surface. The side wall extends from the base or control surface towards the outside. The control surface thus forms the base or bottom of the pocket. The fact that the control surface has the same diameter as the base further conceals the presence of the control surface, because the transition between the control surface and the side wall is located at an area where an edge would be visible anyway due to the transition from the control surface to the bottom of a bore. Preferably, the pocket comprises an alignment surface that cooperates with a further tumbler of the rotary lock cylinder and extends around the central axis in the form of an annular surface, in particular a circular annular surface. The alignment surface comprises an inner diameter and an outer diameter, wherein the alignment surface extends between the inner and outer diameter. If the alignment surface is configured to be a circular ring, the inner diameter and the outer diameter are concentric with each other. Like the control surface, the alignment surface is arranged in the pocket. Preferably, the alignment surface is an integral part of the key shank. The pocket with the alignment surface is preferably a stepped bore. The stepped bore can be produced very easily with a suitable boring tool. The control surface is preferably concentric with the alignment surface. Preferably, a first section of the side wall extends from the alignment surface to the outside of the key shank, and a second section of the side wall extends from the alignment surface to the control surface of the control element. The first section extends outward from the outer diameter of the alignment surface and the second section extends inward from the inner diameter of the alignment surface. The arrangement of the alignment surface inside the pocket has the further advantage that the alignment surface is protected by the side wall, in particular by the first section of the side wall. Preferably, the control surface lies deeper in the pocket than the alignment surface. In other words, the control surface is offset inwards in relation to the alignment surface in the pocket when viewed in the direction of the central axis. The inward offset has the advantage that the control element lies deeper in the key shank and is thus well protected against mechanical influences. Preferably, viewed in the direction of the central axis, the distance between the outer side and the alignment surface is greater or smaller than the distance between the alignment surface and the control surface, viewed in the direction of the central axis. Alternatively, the distance between the outer side and the alignment surface, viewed in the direction of the central axis, is equal to the distance between the alignment surface and the control surface, viewed in the direction of the central axis. Preferably, the alignment surface is a flat surface that runs perpendicular to the central axis. Preferably, when viewed in the direction of the central axis, the alignment surface surrounds the control surface on the outside. 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. Preferably, the side wall is conical at least in sections, so that the diameter of the pocket becomes smaller with increasing distance from the outside. The conical shape of sections of the side wall has the advantage that automatic centering occurs between the tumblers and the pocket. This is particularly advantageous for small cross-sections of the elements of the tumbler. Particularly preferably, the first section mentioned above extends conically to the alignment surface and the second section mentioned above extends conically to the control surface. The design of the side wall with conical sections has the advantage that transitions can be created in the pocket which are advantageous in terms of stability. In particular, the advantage is that the angular transitions reduce any notch effects. In a first preferred embodiment, the control element comprises a bolt arranged in a bore in the key shank and a spring element, in particular a compression spring. Preferably, the spring element acts on the bolt with a force that pushes the control element outwards as seen from the key shank. The bolt comprises the aforementioned control surface. Preferably, the pocket and the bore are arranged in a concentrically arranged arrangement with respect to each other. In a second preferred embodiment, two control elements and two associated pockets are arranged. Each of the control elements comprises 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 pocket of the aforementioned pockets and wherein the control surface of the second bolt lies in a second pocket of the aforementioned pockets. In the aforementioned second embodiment, the pockets are arranged opposite each other on opposite sides of the key as viewed in the direction of the longitudinal axis. Preferably, the pockets are located on the narrow sides of the key. The pockets and the bore are preferably arranged concentrically with respect to each other. In both embodiments, the bolt or at least one of the bolts is held in place by a sleeve pressed into the bore with a through-opening through which the bolt extends. In the arrangement of the two bolts, one of the bolts may be held in place by a step in the bore and the other bolt by the sleeve. Preferably, the through-opening provides a section of the said pocket, in particular such that the control surface lies in the said section. Preferably, the sleeve is positioned relative to the alignment surface such that the sleeve has no effect on the alignment process of the additional tumbler. Preferably, the sleeve is radially surrounded by the alignment surface, in particular such that the sleeve comprises an outer diameter which corresponds to the inner diameter of said alignment surface. Preferably, an end face of the sleeve is offset relative to the alignment surface towards the longitudinal axis or is arranged flush with the alignment surface. Preferably, the sleeve is positioned relative to the alignment surface in such a way that the sleeve has no effect on the alignment process of the additional tumbler. In other words, the sleeve only secures the corresponding bolt and has no influence on the alignment of the additional tumbler, which is aligned by the alignment surface. This has the advantage that the sleeve is not used for the alignment process. Only the alignment surface, which is fixed relative to the key and part of the key, is used for the alignment process of the additional tumbler. Preferably, the bolt comprises a cylindrical, in particular a circular cylindrical, cross-section. Preferably, the bolt comprises a cylindrical or conical guide pin, which is arranged opposite the control surface. The guide pin preferably protrudes into the said spring element, in particular into the compression spring. The advantage of the guide pin protruding into the spring element is that the spring element is centered in the bore. Preferably, the shape of at least one of the control recesses on the key shaft is identical or similar to the shape of said pocket. This has the advantage that the position of the control element is further concealed. Preferably, the side wall extends completely around the central axis, such that the pocket does not comprise any lateral opening. Preferably, the control surface is located at the deepest point of the pocket. Preferably, the pocket is configured to be open in the area of the outside. The pocket is thus freely accessible to the tumblers. The central axis of the pocket preferably runs at an angle of 90° to the longitudinal axis. Preferably, the side wall extends circularly around the central axis, wherein preferably the diameter of the pocket varies over the depth of the pocket. Preferably, the control surface is a planar or flat control surface which runs at an angle of 90° to the central axis of the pocket. Based on this prior art, the object of the invention is to provide a rotary lock cylinder that is even more secure against tampering attempts. This and other tasks are solved by a rotary lock cylinder according to claim 12. Accordingly, a rotary lock cylinder comprises a stator, a rotor rotatably mounted in the stator with a keyway, at least one tumbler cooperating with a control element movably mounted in a key shank of a key, and at least one further tumbler. The tumbler which cooperates 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 are engaged at the front via a conical structure. The rotor pin cooperates with the control element in the key. Due to the conical structure between the stator pin and the rotor pin, the control element can be moved from an initial position to an alignment position when the rotor is rotated by the key. This movement simultaneously moves the stator pin and the rotor pin from a locked position to an unlocked position. The entire package consisting of the stator pin, rotor pin, and control element is thus moved in the direction of the key, wherein the rotor pin and the control element are moved into the key so that the rotor pin is positioned below the separation line between the rotor and the stator. The further tumbler comprises a stator sleeve mounted movably in the stator and a rotor sleeve mounted movably in the rotor, as well as a stator sleeve spring acting on the stator sleeve. The stator sleeve spring acts on the stator sleeve and the rotor sleeve with a spring force in the direction of the keyway. The stator sleeve and the rotor sleeve can be moved from a locked position to an unlocked position by means of an alignment surface on the key. The stator pin is movably mounted in the stator sleeve and the rotor pin is movably mounted in the rotor sleeve. The arrangement of the aforementioned pins in the aforementioned sleeves has the advantage that the elements to be aligned all lie on a common axis, which simplifies the alignment of these elements when using an authorized key. A further advantage is that the tumblers themselves are more complexly configured, which makes tampering for unauthorized operation, such as lock picking, more difficult. To do this, both the pins and the sleeves would have to be aligned together and simultaneously, which is made extremely difficult by the structure described. In the unlocked position, the rotor pin and the stator pin are positioned such that the rotor pin is located below the separation line between the rotor and the stator and the stator pin is located above the separation line between the rotor and the stator. The separation line, seen in cross-section through the central axis, is a line that forms between the rotor and the stator. The rotary lock cylinder described herein is preferably operated with the key described herein. The rotary lock cylinder 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 an outer conical surface extending around the central axis. On the stator pin side, the conical structure is formed by an inner conical surface extending around the central axis. Preferably, the stator sleeve and / or the rotor sleeve are formed in a conical shape at the respective end face at which the stator sleeve and the rotor sleeve are in contact with each other, in such a way that the contact surface between the stator sleeve and the rotor sleeve is minimized. Preferably, the stator sleeve comprises an inner circumferential surface and an outer circumferential surface, wherein the inner circumferential surface and / or the outer circumferential surface are of conical shape. Preferably, the stator pin comprises a cylindrical outer surface which, when the stator pin is in the locked position, is located at the level of the separation line between the stator and the rotor. Preferably, the stator sleeve comprises a cylindrical outer surface which, when the stator sleeve is in the locked position, is located at the level of the separation line between the stator and the rotor. Thus, the cylindrical outer surface of the stator pin and / or the cylindrical outer surface of the stator sleeve each provide a blockage of the rotational movement of the rotor in the locked position. Preferably, both the tumbler and the additional tumbler protrude into the keyway in the locked position and can be moved toward the stator when the key is inserted. Preferably, when the key is inserted, the stator sleeve and the rotor sleeve can be moved radially outward from the locked position into an intermediate position by contact between the stator sleeve and the outside of the key. When the fully inserted position is reached, the stator sleeve and the rotor sleeve can be moved radially inward from the intermediate position into the unlocked position. Preferably, when the key is inserted, the stator pin and the rotor pin can be moved radially outward from the locked position into an intermediate position through contact between the stator pin and the outside of the key, and when the fully inserted position is reached, the stator pin and the rotor pin can be moved radially inward from the intermediate position into the unlocked position. Particularly preferably, both the combination of stator sleeve / rotor sleeve and the combination of stator pin / rotor pin are moved radially outward into the intermediate position and then radially inward for alignment. Preferably, the dimensions of the key, the stator sleeve, the rotor sleeve, the stator pin, and the rotor pin are selected such that, when moving 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 the unlocked position, wherein the passing of the unlocked position of the stator sleeve and rotor sleeve pair and the stator pin and rotor pin pair does not occur simultaneously due to the selected dimensions. This ensures that one of the pairs is always in the locked position when moving into the intermediate position. Preferably, the rotor sleeve comprises an abutment surface on the rotor sleeve side and the rotor pin comprises an abutment surface on the rotor pin side, wherein, when the rotor sleeve is aligned, the abutment surface on the rotor sleeve side is moved against the abutment surface on the rotor pin side until the two abutment surfaces are in contact with each other. During alignment, the rotor pin moves into the unlocked position and abuts the rotor sleeve. Preferably, the rotor sleeve lies firmly in the unlocked position between the alignment surface of the key and the end face of the stator sleeve or the inner surface of the stator. 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. Preferably, the stator sleeve and / or the rotor sleeve are made of a material that comprises 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. Preferably, on the side of the rotor pin, the conical structure is formed by a conical surface extending around the central axis, and on the side of the stator pin, the conical structure is formed by a conical surface extending around the central axis. Optionally, a shoulder surface adjoins the conical surface of the rotor pin. Optionally, a rim section adjoins the conical surface of the stator pin. Preferably, the shoulder surface is located in the alignment position such that the shoulder surface is at the level of the separation line between the rotor and the stator. Further embodiments are provided in the dependent claims. brief description of the drawings 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. 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 Figure 1a; Fig. 2a a cross-sectional view of the front part of the key according to Figures 1a / 1b in the area of the control element; Fig. 2b a detailed view of Figure 2a; Fig. 3a a cross-sectional view through a rotary lock cylinder with a rotor, a stator, a tumbler, and another tumbler according to one embodiment of the present invention, wherein the cross-section runs transversely to the axis of rotation of the rotor; Fig. 3b a cross-sectional view of the rotary lock cylinder according to Figure 3a, wherein the cross-section runs through the axis of rotation of the rotor; Fig. 4 is a cross-sectional view of the rotary lock cylinder according to the preceding figures during the insertion process of the key according to the preceding figures; Fig. 5 a cross-sectional view of the rotary lock cylinder according to Figure 4 with the key further inserted; Fig. 6a-6c cross-sectional views of the rotary lock cylinder according to Figure 4 with the key fully inserted;Fig. 7a a cross-sectional view according to Figure 6c with the key fully inserted during rotation of the key; Fig. 7b a cross-sectional view according to Figures 6c / 7a with the key in an advanced state of rotation;Fig. 8a a cross-sectional view of the front part of a key according to a further development of the invention; Fig. 8b a detailed view of Fig. 2a;Fig. 9a / b cross-sectional views through a rotary lock cylinder according to a further development of the invention; Fig. 10 a cross-sectional view of the rotary lock cylinder according to Fig. 9a / b with the key according to Figs. 8a / b with the key fully inserted; andFig. 11 a cross-sectional view according to Fig. 11 with the key in an advanced state of rotation. Description of preferred embodiments Figures 1a to 2b show different 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, wherein identical parts have the same reference signs. The key 1 comprises a key handle 3 and a key shaft 4 connected to the key handle 3, which extends along a longitudinal axis L. The key shaft 4 comprises a plurality of control recesses 6, in particular control bores, on its outer side 5 for the alignment of tumblers on the rotary lock cylinder 2. When the tumblers and the control bores interact, the tumblers are aligned by the control bore in a known manner, such that the tumblers are moved from a locked position to an unlocked position. Furthermore, the key 1 comprises at least one control element 7 arranged movably in the key shank 4. The control element 7 is mounted movably relative to the key shank 4. The control element 7 comprises 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 into an alignment position. During this movement, the control element 7 is moved relative to the key shank 4. The key shank 4 comprises a pocket 10 for the control element 7. The pocket 10 extends from the outer side 5 into the key shank 4. The pocket 10 is surrounded on the sides 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 pocket 10 does not comprise any side openings. The control surface 9 of the control element 7 is located in the aforementioned pocket 10. The pocket 10 is open to the outside. The central axis M of the pocket extends substantially perpendicular to the longitudinal axis L. The pocket 10 is preferably a bore, particularly preferably a stepped bore. In the embodiment shown, the control surface 9 forms the base of the pocket if the control element 7 is in its initial position. 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. Substantially, this means that there is a slight clearance 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 from the base surface or control surface 9 towards the outer surface 5. When the control element 7 is moved during the alignment process, the control surface 9 is moved further into the key 1. The movement of the control element 7 is represented by the arrow P in Figure 2b. In the embodiment shown, the pocket 10 also comprises an alignment surface 12. The alignment surface 12 serves to align a further tumbler 13 of the rotary lock cylinder 2. The arrangement of the further tumbler 13 in relation to the above-mentioned tumbler 6 is explained in more detail below. The alignment surface 12 extends in a ring shape around the central axis M. The alignment 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 shank 4. The alignment surface 12 is concentric with the central axis M. The control surface 9 is located deeper in the pocket than the alignment surface 12. 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. In the embodiment shown, both sections 14, 15 are conical in shape, so that the diameter of each section becomes smaller as the distance from the outer side increases. Viewed in the direction of the central axis M, the distance A1 between the outer side 5 and the alignment surface 12 is greater or smaller than the distance A2 between the alignment surface 12 and the control surface 9 viewed in the direction of the central axis. Alternatively, the two distances may also be equal. The number of permutations can be increased by varying the distances under different keys. The alignment surface 12 is a flat surface perpendicular to the central axis M. The flat surface comprises here the outer shape of a circle. With reference to Figure 2a, the particularly preferably designed control element 7 in the key is now explained. In the embodiment shown, two control elements 7 and two associated pockets 10 are arranged. The pockets 10 are located opposite each other with respect to the central axis M on the narrow sides of the key shank 4. Each of the control elements 7 comprises a bolt 17 arranged in a bore 16 in the key shank 4, wherein each pocket 10 is assigned one 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 is located in a first of the aforementioned pockets 10 and the control surface 9 of the second bolt 17 is located in a second of the aforementioned pockets 10. One of the bolts, in this case bolt 17, is held in place by a sleeve 19 pressed into bore 16 with a through-opening 20 through which bolt 17 extends. The other bolt 17 abuts against a step 37 of the bore 15. Both bolts 17 comprise a flange 38 which extends perpendicular to the bolt 17, wherein the flange 38 abuts against the sleeve 19 or the step 37. The sleeve 19 is radially surrounded by the alignment surface 12. In particular, the sleeve 19 comprises an outer diameter. The outer diameter corresponds to the inner diameter of the aforementioned alignment surface 12. Preferably, 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. This means that the sleeve 19 does not protrude beyond the alignment surface 12 as viewed from the bore 16. In the embodiment shown, the bolt 17 comprises a cylindrical, in particular a circular cylindrical, cross-section. The bolt 17 comprises a cylindrical or conical guide pin 21 toward the control surface 9, wherein the guide pin preferably protrudes into the said spring element. Preferably, 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 pocket 10. Figures 3a to 7c describe a preferred embodiment of the rotary lock cylinder 2 according to the present invention. The rotary lock cylinder 2 is preferably operated with the key 1 described herein. 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. 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 keyway 24, wherein the stator pin 25 and the rotor pin 26 are engaged at the front via a conical structure 28. The rotor pin 26 cooperates with the control element 7 in the key 1. The conical structure is configured 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 configured to match the shape of the conical recess 40. The additional tumbler 13 comprises a stator sleeve 29 mounted movably in the stator 22 and a rotor sleeve 30 mounted movably 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 keyway 24. In the embodiment shown, the stator sleeve 29 and the rotor sleeve 30 can be aligned from a locked position into an unlocked position by the alignment 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. Figures 3a and 3b show the stator pin 25 and the rotor pin 26 as well as the stator sleeve 29 and the rotor sleeve 30 in the locked position. The rotor 23 cannot be pivoted toward the stator 22 because the stator sleeve 29 is located at the level of the separation line T between the rotor 23 and the stator 22, thus preventing movement between the rotor 23 and the stator 22. 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 additional 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 out of the 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. Figure 5 shows an intermediate position of the two tumblers 9, 13. When moving 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 separation line T with their respective contact surfaces. In the intermediate position, the rotor sleeve 30 lies at the level of the separation line T between the rotor 23 and the stator 22, thus preventing movement between the rotor 23 and the stator 22. 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. However, due to the selected dimensions, the unlocked position is not passed simultaneously by the pairing of stator sleeve 29 and rotor sleeve 30 and the pairing of stator pin 25 and rotor pin 26. Starting from the intermediate position, the tumbler 9, 13 is aligned into the unlocked position. In the process, the stator sleeve 29, the rotor sleeve 30, the stator pin 25, and the rotor pin 26 are moved radially inward from the intermediate position. The unlocked position is shown in Figures 6a, 6b, and 6c. In the unlocked position, the rotor sleeve 30 is in contact with the alignment surface 12 of key 1, and the contact surface between stator sleeve 29 and rotor sleeve 30 lies on the separation line T. Furthermore, the stator pin 25 is in contact with the control surface 9 of the control element 8 of key 7. The rotor pin 26 is completely inside the stator 22. Starting from the unlocked position shown in Figures 6a, 6b, and 6c, the rotor 23 can be pivoted relative to the stator 22 using the key 1. During this pivoting, due to the conical structure 28, the the rotor pin 26 is moved toward the longitudinal axis L and pushes 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, compressing the spring element 18 in the process. Figure 7b shows the rotor 23 in another position, wherein the contact between the rotor pin 26 and the stator pin 25 is completely eliminated. The rotor 23 can rotate freely. With reference to Figures 3a to 7b, further optional features of the rotary lock cylinder 2 are now shown. The stator sleeve 29 and / or the rotor sleeve 30 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. The conical shape is such that the contact surface between the stator sleeve 29 and the rotor sleeve 30 is minimized. 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. The rotor pin 26 also comprises a cylindrical outer surface 39 which, in the intermediate position, is located at the level of the separation line between the stator 22 and the rotor 23. Furthermore, 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 between the stator 22 and the rotor 23. Both the tumbler 8 and the additional tumbler 13 protrude into the keyway 24 in the locked position and, as described above, can be moved toward the stator 22 when the key 1 is inserted. In the embodiment shown, 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. 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. In the unlocked position, the rotor sleeve 30 is firmly positioned between the alignment 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. The stator sleeve spring 31 provides a spring force that is greater than the spring force of the spring element 18 acting on the control element 7. 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 according to Figures 1 to 7 by the position of the control surface 9. Otherwise, the key 1 is configured similarly 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 shown in Figures 1 to 7. Viewed in the direction of the central axis M, the distance A1 between the outer side 5 and the alignment surface 12 in this further development is smaller than the distance A2 between the alignment surface 12 and the control surface 9, with the latter also viewed in the direction of the central axis M. In particular, the deeper positioned control surface 9 leads to the advantage that greater flexibility can be achieved for the paths of the stator sleeve 29 and rotor sleeve 30 during alignment. This is in conjunction with the stator pin 25 and the rotor pin 26. Figures 9 to 11 show a further development of the rotary lock cylinder 2 described above. The rotary lock 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 front via a conical structure 28. The conical structure is configured 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 comprises a conical surface. The conical counterpart 41 is configured to match the shape of the conical recess 40. The conical counterpart comprises a conical surface. The conical counterpart 41 is followed by a shoulder surface 42, which extends substantially perpendicular to the central axis M away from the conical counterpart 41. The conical recess 40 is followed by a rim section 43. The rim section 43 extends to the shoulder surface 42 and preferably contacts the shoulder surface 42 in the locked position. Preferably, the shoulder surface 42 is located in the alignment position, as shown in Figure 10, such that the shoulder surface 42 is located at the level of the separation line between the rotor 23 and the stator 22. List of reference signs 1 Key2 Rotary lock cylinder3 Key handle4 Key shank5 Outer side6 Control recesses7 Control element8 Tumbler9 Control surface10 Pocket11 Side wall12 Alignment area13 Additional tumbler14 First section15 Second section16 Bore17 Bolt18 Spring element19 Sleeve20 Through-opening21 Guide pin22 Stator23 Rotor24 Keyway25 Stator pin26 Rotor pin27 Stator pin spring28 Conical structure29 Stator sleeve30 Rotor sleeve31 Stator sleeve spring32 End face33 Abutment surface on the rotor sleeve side34 Abutment surface on the rotor pin side35 Cylindrical outer surface, stator pin36 Cylindrical outer surface, stator sleeve37 Step38 Flange39 Cylindrical outer surface, rotor pin40 Conical recess41 Conical counterpart42 shoulder surface43 Rim section44 Cone surface of 2645 Cone surface of 25M Central axisL Longitudinal axisD9 DiameterD11 DiameterT Separation line (Fig. 1)
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), characterized in that 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).
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 inthat 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 / orthat the control surface (9) lies deeper in the pocket (10) than the alignment surface (12); and / orthat, 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 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, 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).
8. Key (1) according to claim 7, 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.
9. Key according to claim 7 and one of claims 3 to 6, characterized in 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).
10. Key (1) according to any 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) comprises a cylindrical or conically configured guide pin (21) towards the control surface (9), wherein the guide pin preferably protrudes into the spring element.
11. Key (1) according to one of the preceding claims, characterized inthat 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 / orthat the pocket (10) is open in the area of the outer side (5); and / orthat 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 / orthe control surface (9) is a planar or flat control surface.
12. Rotary lock cylinder (2) comprising a stator (22), a rotor (23) rotatably mounted in the stator (22) with a keyway (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 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, andwherein 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 lock cylinder (2) according to claim 12, 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.
14. Rotary lock cylinder (2) according to one of the preceding claims 12 to 13, 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).
15. Rotary lock cylinder (2) according to one of the preceding claims 12 to 14, 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.
16. Rotary lock cylinder (2) according to one of the preceding claims 12 to 15, 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.
17. Rotary lock cylinder (2) according to claim 16, 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.
18. Rotary lock cylinder (2) according to one of the preceding claims 12 to 17, 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.
19. Rotary lock cylinder (2) according to claim 18, 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.
20. Rotary lock 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 comprises a greater hardness than the material of the stator and the rotor.
21. Rotary lock 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) 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).
22. System comprising a rotary lock cylinder (2) according to one of the claims 12 to 21 and a key (1) according to one of the claims 1 to 11.