EP4320323A1

EP4320323A1 - Cylinder lock

Info

Publication number: EP4320323A1
Application number: EP22716304.5A
Authority: EP
Inventors: Walter Baumhauer; Michael Riesel
Original assignee: EVVA Sicherheitstechnologie GmbH
Current assignee: EVVA Sicherheitstechnologie GmbH
Priority date: 2021-04-08
Filing date: 2022-04-07
Publication date: 2024-02-14
Also published as: WO2022213138A1; AT524794A4; AT524794B1

Abstract

The invention relates to a cylinder lock (1) having a cylinder core (4) which can be rotated in a cylinder housing (2), comprising a key channel (5) for inserting a key (6), wherein the cylinder lock (1) is designed to assume an enabling state, in which the rotation of the cylinder core (4) is enabled, and to assume a blocking state, in which the rotation of the cylinder core (3) is blocked, and wherein a blocking slide (7) is provided that is movable in the cylinder core (4) along the longitudinal axis (3) and has at least one radial extension (8) which is guided in at least one substantially annular housing groove (9) extending on the inner circumference of the cylinder housing (2), wherein a locking element (10) is provided that is designed to form-fittingly connect the blocking slide (7) to the cylinder core (4) in the blocking state and to detach the blocking slide (7) from the cylinder core (4) in the enabling state, and wherein an electromechanical actuator, for example an electric motor (11), arranged in the blocking slide (7) is provided and is designed to activate the locking element (10).

Description

cylinder lock

The invention relates to a cylinder lock with a cylinder core that can be rotated about a longitudinal axis in a cylinder housing, comprising a key channel for inserting a coded key.

Such cylinder locks are known and are designed to assume a release state in which the rotation of the cylinder core relative to the cylinder housing is released when a key assigned to the cylinder lock is inserted into the key channel, and otherwise assume a blocked state in which the rotation of the cylinder core relative to the cylinder body is blocked.

Electromechanical cylinder locks are known for switching the cylinder lock from the released state to the locked state and back. For example, EP 1 904704 A1 shows an electromechanical cylinder lock with a locking element that is movably arranged between the cylinder housing and the cylinder core and can be brought from a locking position into a release position by an electronically controllable actuator arranged on the shaft of an electric motor. However, such known constructions have the disadvantage that an integration of the electromechanical locking device with conventional mechanical locking devices is possible only with difficulty. In addition, there is a risk that the electromechanical locking device can be activated by an unauthorized key and lead to the release of the lock, even if the mechanical coding of the key has not been queried correctly.

An object of the invention is to solve these and other problems and to provide an electromechanical cylinder lock with increased security. This and other objects of the invention are achieved by a device according to claim 1 according to the invention.

A cylinder lock according to the invention comprises a mechanical locking slide which is movable in the cylinder core essentially parallel to the longitudinal axis of the cylinder core and is guided, preferably positively guided, on the inner circumference of the cylinder housing. In particular, it can be provided that the locking slide has at least one radial extension, via which the locking slide is guided in at least one essentially ring-shaped housing groove running on the inner circumference of the cylinder housing. By selecting the groove in the housing, a movement in the direction of the longitudinal axis can thus be imposed on the locking slide when the cylinder core is rotated. However, other implementations for guiding the locking slide can also be provided, for example a pin can be provided on the inner circumference of the cylinder housing, which protrudes into the core circumference and is guided in a circumferential groove on the cylinder core and on the locking slide. It is essential that rotation of the cylinder core is only possible if the locking slide can follow the course of the guide.

A locking element is also provided, which positively connects the locking slide to the cylinder core in the locked state in order to block its axial movement parallel to the longitudinal axis, and releases the locking slide from the cylinder core in the released state in order to release its axial movement parallel to the longitudinal axis. To actuate the locking element, an electromechanical actuator is provided, which is designed to actuate the locking element in such a way that it releases the locking slide from the cylinder core during the transition from the locked state to the released state. The actuator can be designed as an electric motor; however, it can also be a linear drive or any other actuating element which can actuate the locking element. The actuator is preferably also designed to actuate the locking element in such a way that it positively connects the blocking slide to the cylinder core during the transition from the released state to the blocked state. But this is not mandatory; the transition from the release state to the locked state can also be achieved in a purely mechanical way, for example by removing the key from the lock.

The actuator can be arranged at least partially, preferably mostly or entirely in the locking slide. The locking element can be essentially cylindrical and attached to the actuator, for example to a shaft of the electric motor. This combination according to the invention of an actuator, in particular an electric motor, in a movable blocking slide which is positively guided in the housing groove, however, allows a particularly space-saving integration of the blocking mechanism into existing cylinder locks.

According to the invention it can be provided that the locking slide in the locked state can at least temporarily assume a different axial position relative to the cylinder core than in the released state. In particular, the housing groove or the aforementioned groove on the cylinder core and locking slide cannot be rotationally symmetrical relative to the longitudinal axis of the cylinder core. The locking slide that is forcibly guided by the groove can thus assume a different axial position relative to the cylinder core in the locked state than in the released state. Since the locking slide is positively connected to the cylinder core in the locking state and cannot move in the axial direction, it is thus ensured that the locking slide blocks the rotation of the cylinder core in the locking state.

However, in other embodiments of the invention it can also be provided that the housing groove is rotationally symmetrical relative to the longitudinal axis of the cylinder core. In these designs, the extension of the locking slide has an extension groove that is not rotationally symmetrical to the longitudinal axis, and the cylinder housing includes a housing pin that protrudes radially inward. The housing pin is designed to engage in the extension groove in such a way that the locking slide is guided along the extension groove, which does not run rotationally symmetrically. Consequently, it is also achieved in these embodiments that the locking slide in the locked state can at least temporarily assume a different axial position relative to the cylinder core than in the released state.

According to the invention it can be provided that the extension of the locking slide extends along the circumference of the cylinder core over an angle of approximately 5° to approximately 20°, preferably approximately 12.5°. According to the invention it can be provided that the locking slide has two or more axially offset extensions which are guided in two or more axially offset housing grooves of the cylinder housing.

According to the invention, it can be provided that the housing groove has a latching point which projects in the direction of the longitudinal axis and which is preferably formed in the form of a prong and a notch of the groove edge arranged opposite.

In particular, it can be provided that the extension of the locking slide snaps into the snap-in point in the locked state and can only be moved out of the snap-in point in the released state. In order to enable a particularly good latching, it can be provided that the extension has a contour with a point, for example a triangular, oval or diamond-shaped contour.

In those alternative embodiments in which a housing pin is guided in a non-rotationally symmetrical extension groove of the extension, it can be provided that the extension groove has a latching point projecting in the axial direction, which is preferably formed in the form of a prong and a notch arranged opposite. In particular, it can be provided that the housing pin is locked in the latching point in the locked state and can only be moved out of the latching point in the released state. In order to enable a particularly good snap-in, provision can also be made here for the housing pin to have a contour with a point, for example a triangular, oval or diamond-shaped contour. According to the invention, it can be provided that the locking element is arranged on the actuator, in particular on a shaft of the motor, and has a cam projecting in the radial direction, which is designed to positively engage in a recess of the cylinder core in the locked state and to leave the recess in the released state . In the locked state, the locking slide is thus positively connected to the cylinder core via the cam. In the release state, the actuator rotates the locking element in such a way that the cam leaves the recess in the cylinder core, so that the locking slide can be moved axially again relative to the cylinder core.

The actuator can be designed to rotate the locking element by an angle in the range from about 75° to about 105°, in particular about 90°, in order to move the locking element from the locked state to the released state and back.

According to the invention it can be provided that in the cylinder core there is a locking pin which projects into the key channel and which is designed to interrogate a coding on a key inserted into the key channel.

Such a locking pin is movable normal to the longitudinal axis of the cylinder core, ie, for example, from top to bottom, or from left to right. The locking pin is designed in a known manner to interrogate a code on a key inserted into the key channel. The locking pin moves along its longitudinal extent from a latching position in the locked state to a release position in the released state.

According to the invention, provision can be made for the locking pin to block an axial movement of the locking slide in its latching position and to release an axial movement of the locking slide in its release position. The locking pin is preferably essentially cylindrical, mounted in a recess in the locking slide and protrudes through a precisely fitting recess in the cylinder core into the key channel. This ensures that an axial movement of the locking slide and thus an actuation of the lock is only possible when the locking pin is in the release position. In alternative embodiments it can be provided that although the locking pin does not oppose the axial movement of the locking slide in its locking position, it blocks actuation of the locking element and in its release position enables actuation of the locking element. In these embodiments, too, an axial movement of the locking slide and an actuation of the lock is only possible when the locking pin is in the release position, because only then can the locking element be actuated via the actuator.

According to the invention, it can be provided that the locking pin has a scanning element for engaging in a coding of the key, for example a cam groove, wherein the locking pin is moved from the locking position to the release position when an authorized key is inserted by guiding the scanning element in the cam groove. In the known manner, the scanning element can be an extension which is guided, for example, in a cam groove on the key.

According to the invention it can be provided that the locking pin blocks rotation of the cam in the locking position and allows rotation of the cam in the release position. For this purpose, the locking pin can have a recess which is arranged in such a way that it can receive the cam in the release position, while in the locking position it blocks displacement of the cam.

According to the invention it can be provided that a clamping element, for example a magnet or a spiral spring, is provided, which holds the locking pin in the locking position, so that the locking pin can only be brought into the release position by inserting an authorized key. When the key is removed, the clamping element pushes the locking pin back into the locking position.

According to the invention it can be provided that the recess on the locking pin merges into a shoulder which mechanically moves the cam into the recess of the cylinder core during the transition from the release position to the locking position. This ensures that the locked state is assumed when the key is removed, even if the actuator is de-energized. The transition between the recess and the shoulder may be at an angle of 90° or less to ensure that the locking pin pushes the cam into the recess of the cylinder core without locking when the key is removed.

Such a locking pin can in particular be designed in such a way that in the locked state it mechanically blocks access from the key channel to the locking element.

In addition, the locking pin can have electrical contacts for the transmission of electrical energy from an electrical energy store on the key to the electromechanical actuator. This is particularly advantageous when the lock does not have an energy supply but is fed via an energy store in the key. In this case, only when the authorized key is inserted is the locking element moved into the release position, thus enabling the locking element to be activated by the actuator, and then the actuator is electrically activated in order to move the cam of the locking element out of the depression in the cylinder core and into the recess in the locking element move.

Further features according to the invention result from the claims, the exemplary embodiments and the figures.

The invention is explained below using exemplary, non-exclusive exemplary embodiments.

figs 1a-1c show schematic representations of a first embodiment of a cylinder lock according to the invention;

2 shows a schematic sectional view of a cylinder lock according to the invention;

figs 3a - 3d show schematic sectional views of a cylinder lock in the release state and in the locked state;

figs 4a - 4b show side views and sectional views of a second embodiment of a cylinder lock according to the invention; figs 5a - 5b show schematic sectional views of a third embodiment of a cylinder lock according to the invention;

figs 6a - 6b show schematic three-dimensional representations and side views of the locking element and the locking pin of a cylinder lock according to the invention.

1a shows a schematic exploded view of a first embodiment of a cylinder lock 1 according to the invention. The cylinder lock 1 comprises a cylinder core 4 which can be rotated about a longitudinal axis 3 in a cylinder housing 2 and has a key channel 5 for inserting a coded key 6. The cylinder lock 1 is designed to to assume a release state in which the rotation of the cylinder core 4 relative to the cylinder housing 2 is released, and to assume a locked state in which the rotation of the cylinder core 4 relative to the cylinder housing 2 is blocked.

A locking slide 7 is provided in a longitudinal recess of the cylinder core 4 and is movable in the direction of the longitudinal axis 3 . The locking slide 7 comprises two extensions 8 directed radially outwards, each of which has a substantially diamond-shaped contour. On the circumference of the cylinder housing 2, two essentially ring-shaped housing grooves 9 are provided. The housing grooves 9 extend over a large part of the circumference, over approximately 270° in the present exemplary embodiment. The extensions 8 of the locking slide 7 are guided in the grooves 9 in the housing. The housing grooves 9 each have a detent point 14 offset in the direction of the longitudinal axis 3, which is formed here in the form of a prong and a notch of the groove edge arranged opposite. The extensions 8 are each designed to engage in the latching point 14 and have a diamond-shaped contour.

Furthermore, a locking element 10 is provided, which is designed to positively connect the locking slide 7 to the cylinder core 4 in the locked state and to release the locking slide 7 from the cylinder core 4 in the released state. The locking element 10 is essentially cylindrical and is arranged on a shaft of an actuator arranged in the blocking slide 7 in the form of an electric motor 11 . It has a cam 15 (not visible in these figures), which is designed to positively engage in a recess 16 of the cylinder core 4 . The motor 11 is designed to actuate the locking element 10 in such a way that it positively connects the locking slide 7 to the cylinder core 4 in the locked state and releases the locking slide 7 from the cylinder core 4 in the released state. Thus, the locking slide 7 can only move axially in the elongated recess of the cylinder core 4 in the released state. In the locked state, the axial position of the locking slide 7 relative to the cylinder core 4 is fixed.

The housing groove 9 is not rotationally symmetrical relative to the longitudinal axis 3 of the cylinder lock, but has axially offset latching points 14 . As a result, the blocking slide 7 inevitably assumes a different axial position relative to the cylinder core 4 in the blocking state than in the released state. In the locked state, the extensions 8 are in the latching points 14. The extensions 8 extend in the circumferential direction of the cylinder core 4 over an angle of approximately 12.5°.

Fig. 1b shows the cylinder lock 1 in the locked state. A key 6 that is not authorized to block is introduced into the key channel 5 . The extensions 8 of the locking slide 7 are locked in two locking points 14 of the housing grooves 9; the axial position of the locking slide 7 is fixed relative to the cylinder core 4 . A rotation of the cylinder core 4 is not possible.

1c shows the cylinder lock 1 in the released state. A key 6 with blocking authorization is introduced into the key channel 5 . The extensions 8 of the locking slide 7 can move in the housing grooves 9; the axial position of the locking slide 7 is flexible relative to the cylinder core 4. A rotation of the cylinder core 4 is possible.

Fig. 2 shows a schematic sectional view of a cylinder lock 1 according to the invention in the locked state. The cylinder lock 1 comprises a cylinder core 4 which can be rotated about a longitudinal axis 3 in a cylinder housing 2 and has a key channel 5 for inserting a coded key 6. A locking slide 7 is provided in a longitudinal recess in the cylinder core 4 and can be moved in the direction of the longitudinal axis 3. The locking slide 7 comprises two radially outwardly directed extensions 8. On the circumference of the cylinder housing 2, two essentially ring-shaped housing grooves 9 are provided. The extensions 8 of the locking slide 7 are guided in the grooves 9 in the housing. The housing grooves 9 each have a detent point 14 offset in the direction of the longitudinal axis 3, which is formed here in the form of a prong and a notch of the groove edge arranged opposite. The extensions 8 are latched in the latching point 14 in the blocking state shown.

Furthermore, a locking element 10 is provided. The locking element 10 is essentially cylindrical and is arranged on a shaft of an electric motor 11 arranged in the locking slide 7 . It has a cam 15 (not visible in this figure), which is designed to positively engage in a recess 16 of the cylinder core 4 . The motor 11 is designed to rotate the locking element 10 by an angle of rotation in the range of approximately 90° between the release state and the locked state.

In other non-illustrated embodiments of the invention, the actuator is not designed as an electric motor but as a linear drive or as another electromechanical actuating element that is designed to actuate the locking element accordingly. A twisting angle of less than 90° or a linear travel in the range of less than one millimeter can be sufficient for this.

In the state shown here, the motor has already rotated the locking element 10 in such a way that the cam 15 no longer engages the recess 16 . However, in the cylinder core 4 there is a locking pin 17 which projects into the keyway 5 and is horizontally movable normal to the longitudinal axis 3 . The locking pin 17 is cylindrical in this exemplary embodiment, is mounted in a recess in the locking slide 7 and protrudes through a precisely fitting recess in the cylinder core 4 into the key channel 5 . The locking pin 17 is designed to interrogate a code on a key 6 inserted into the key channel 5 and to move along its longitudinal extent from a latched position in the locked state to a release position in the released state. The locking pin 17 blocks an axial movement of the locking slide 7 in its latching position and releases an axial movement of the locking slide 7 in its release position. The detent position is shown, in which the locking pin 17 blocks an axial movement of the locking slide 7 . Consequently, the locking slide 7 is fixed axially despite the release of the locking element 10 .

figs 3a-3d show schematic sectional views of the cylinder lock 1 from FIG. 2 in four different states. According to FIG. 3a, the cylinder lock 1 is in the blocking position. The extensions 8 of the locking slide 7 are locked in the locking points 14 of the housing grooves 9 . The cam 15 of the locking element 10 is positively connected to the recess 16 of the cylinder core, and the locking pin 17 is in the locking position and prevents axial movement of the locking slide 7. The independent, electromechanical and mechanical locking ensures a particularly high level of security.

According to FIG. 3b, the cylinder lock 1 is still in the blocking position. However, an authorized key 6 has been inserted and the locking pin 17 has moved into the release position, so that it no longer opposes an axial movement of the locking slide 7 . The cam 15 of the locking element 10 is still positively connected to the recess 16 of the cylinder core, so that an axial movement of the locking slide 7 is not possible.

According to FIG. 3c, the cylinder lock 1 is in the release position. An authorized key 6 has been inserted and the locking pin 17 has moved to the release position. The motor 11 has been activated and has rotated the locking element 10 in such a way that the cam 15 has left the recess 16 of the cylinder core 4 . An axial movement of the locking slide 7 and rotation of the cylinder core 4 is possible.

According to FIG. 3d, the cylinder lock 1 is in the release position and the cylinder core 4 has been rotated. The locking slide 7 has moved axially, as indicated by the double arrows, and the extensions 8 have left the latching points 14 of the housing grooves 9 . figs 4a-4b show side views and sectional views of a second embodiment of a cylinder lock 1 according to the invention. In this embodiment, the extension 8 of the locking slide 7 includes an extension groove 12 that is not rotationally symmetrical to the longitudinal axis 3. Here the extension groove 12 has a V-shape and is only a small angular range of about 10 ° in the extension 8 cut. The cylinder housing 2 has a radially inwardly projecting housing pin 13 which engages in the extension groove 12 in such a way that the locking slide 7 is positively guided in the extension groove 12 in the angular range mentioned. As a result, as in the above-described embodiments, the locking slide 7 assumes a different axial position relative to the cylinder core 4 in the locked state than in the released state.

In order to ensure good engagement, in exemplary embodiments that are not shown, the extension groove 12 can have an engagement point 14 offset in the direction of the longitudinal axis 3, which can be formed, for example, in the form of a prong and a notch arranged opposite, with the housing pin 13 for engaging in the engagement point 14 can preferably have a triangular, oval or diamond-shaped contour.

4a shows the blocking position, FIG. 4b the release position with the blocking slide 7 shifted axially. However, the housing groove 9 is cut out in the angular area of the extension 8 in order to allow an axial displacement of the locking slide 7 according to the extension groove 12 . In the specific exemplary embodiment, a mixed form is also shown, in which the left-hand extension 8 is guided in a non-rotationally symmetrical housing groove 9, and the right-hand extension is guided in a rotationally symmetrical housing groove 9, but in the angular range of the extension 8 the extension groove 12 and the housing pin 13 Guide and axial displacement takes over.

figs 5a-5b show schematic sectional views of a third embodiment of a cylinder lock 1 according to the invention. In this embodiment, the locking pin 17' is designed differently than in the exemplary embodiments described above. Instead of influencing the axial movement of the locking slide 7, it is designed here in such a way that it blocks actuation of the locking element 10 in its detent position and releases actuation of the locking element 10 in its release position. To this end, the locking pin 17' blocks rotation of the cam 15 in the detent position, and has a recess 20 which allows rotation of the cam 15 in the release position. In this embodiment, the cam 15 is substantially in the shape of a segment of a circle; the recess 16 in the cylinder core 4 for receiving the cam 15 is not shown.

The locking pin 17' is designed here as a vertically displaceable pin with a substantially rectangular cross section and a sensing element 18 protruding into the keyway 5. The scanning element 18 is designed to engage in a coding of the key 6, for example to engage in a cam groove 19. When an authorized key 6 is inserted into the key channel 5, the locking pin 17' is thus moved in the vertical direction from the locking position to the release position.

According to FIG. 5a, the locking pin 17' is in the locking position, the locking pin 17' being designed in such a way that in this state it also effectively prevents access from the key channel 5 to the locking element 10. The locking pin 17 ′ has a stepped cross-section and, on its side facing away from the key channel 5 , has a stepped shape with a set-back recess 20 which merges into a shoulder 22 . During the transition from the release position to the locking position, this shoulder 22 moves the cam 15 of the locking element 10 into the recess 16 of the cylinder core 3. This effectively ensures that the locking element 10 is automatically rotated when the key 6 is removed in such a way that the cam 15 in the recess 16 protrudes - even if the motor 11 itself has no power supply and would actually continue to activate the release position. In this embodiment, it is basically sufficient if the motor 11 is only designed to actuate the locking element 10 during the transition from the locked state to the released state - on the other hand, the motor 11 does not necessarily have to be activated during the transition from the released state to the locked state, since the Locking pin 17 'for a corresponding rotation of the locking element 10 provides. According to FIG. 5b, the locking pin 17' is in the release position, with the recess 20 of the locking pin 17' being brought into a position such that the cam 15 of the locking element 10 can be rotated in this state and can be accommodated in the recess 20.

In exemplary embodiments that are not shown, the locking pin 17' has electrical contacts for the transmission of electrical energy from an electrical energy store on the key 6 to the electric motor 11 Supplied with energy when the locking pin 17' is moved into the correct position by the mechanical coding, for example the cam groove.

figs 6a - 6b show schematic three-dimensional representations and side views of the locking element 10 and the locking pin 17' of a cylinder lock 1 according to the invention, with further components being hidden for better clarity. 6a shows the locking position of the locking pin 17'; 6b shows the release position of the locking pin 17'. The transition from the shoulder 22 to the recess 20, which is realized here at an angle of about 90°, is clearly visible. In other embodiments, the angle may be less, about 75°, to ensure that the locking pin 17' moves the cam 15 into the recess 16 of the cylinder core 4 without locking when the key is removed.

Otherwise, the components in Figs. 6a - 6b those in Figs. 5a - 5b. However, a tensioning element in the form of a spiral spring 21 is also shown. This spiral spring 21 is used to hold the locking pin 17' in the locking position, i.e. shifted vertically upwards, so that the locking pin 17' only moves into the release position when an authorized key 6 is pushed in can be brought. Likewise, the spiral spring 21 ensures that the locking pin 17' is safely moved from the released position to the locked position when the key 6 is removed.

The invention is not limited to the exemplary embodiments described, but also includes further embodiments within the scope of the following patent claims. Reference sign

1 cylinder lock

2 cylinder housing

3 longitudinal axis

4 cylinder core

5 key channel

6 keys

7 locking slides

8 extension

9 housing groove

10 locking element 11 electric motor 12 extension groove

13 housing pegs

14 snap point

15 cam

16 deepening

17, 17' locking pin 18 sensing element

19 cam groove

20 recess 21 spiral spring 22 shoulder

Claims

patent claims

1. Cylinder lock (1) with a cylinder core (4) rotatable about a longitudinal axis (3) in a cylinder housing (2), comprising a key channel (5) for introducing a coded key (6), the cylinder lock (1) being designed for this purpose is,

- take a release state in which the rotation of the cylinder core (4) is released relative to the cylinder housing (2), and

- take a locked state in which the rotation of the cylinder core (4) relative to the cylinder housing (2) is blocked, characterized in that

- A locking slide (7) is provided, which o is movable in the cylinder core (4) essentially parallel to the longitudinal axis (3), and o is guided on the inner circumference of the cylinder housing (2), a locking element (10) is provided, which is is designed o to connect the blocking slide (7) to the cylinder core (4) in a form-fitting manner in the blocked state, and o to release the blocking slide (7) from the cylinder core (4) in the released state, and wherein

- An at least partially in the locking slide (7) arranged electromechanical actuator, for example an electric motor (11) is provided, which is designed to actuate the locking element (10) in such a way that it o the locking slide ( 7) detaches from the cylinder core (4), and preferably connects the locking slide (7) to the cylinder core (4) in a form-fitting manner during the transition from the release state to the blocked state.

2. Cylinder lock according to claim 1, characterized in that the locking slide (7) has at least one radial extension (8) which is guided in at least one essentially annular housing groove (9) running on the inner circumference of the cylinder housing (2).

3. Cylinder lock according to claim 2, characterized in that the housing groove (9) is not rotationally symmetrical relative to the longitudinal axis (3), so that the locking slide (7) can assume a different axial position relative to the cylinder core (4) in the locked state than in the released state.

4. Cylinder lock (1) according to claim 2, characterized in that

- The extension (8) has an extension groove (12) that is not rotationally symmetrical to the longitudinal axis (3), wherein

- the cylinder housing (2) has a radially inwardly projecting housing pin (13) which engages in the extension groove (12) in such a way that the locking slide (7) is guided in the extension groove (12),

- So that the locking slide (7) can assume a different axial position relative to the cylinder core (4) in the locked state than in the released state.

5. Cylinder lock according to one of claims 1 to 4, characterized in that the extension (8) extends along the circumference of the cylinder core (4) over an angle of about 5° to about 20°, preferably about 12.5°.

6. Cylinder lock (1) according to one of claims 1 to 5, characterized in that the locking slide (7) has two or more axially offset extensions (8) which are located in two or more axially offset housing grooves (9) of the cylinder housing (2). are led.

7. Cylinder lock (1) according to one of Claims 1 to 6, characterized in that the housing groove (9) has a latching point (14) offset in the direction of the longitudinal axis (3), which is preferably in the form of a prong and a notch arranged opposite of the Groove edge is formed, and wherein the extension (8) for engaging in the latching point (14) preferably has a triangular, oval or diamond-shaped contour.

8. Cylinder lock (1) according to one of Claims 4 to 6, characterized in that the extension groove (12) has a latching point (14) which is offset in the direction of the longitudinal axis (3) and is preferably in the form of a prong and a notch arranged opposite is, wherein the housing pin (13) for engaging in the latching point (14) preferably has a triangular, oval or diamond-shaped contour.

9. Cylinder lock (1) according to one of claims 1 to 8, characterized in that the locking element (10) is arranged on the actuator, for example on a shaft of a motor (11), and has a cam (15) projecting in the radial direction, who is trained to

- engage in a form-fitting manner in a depression (16) of the cylinder core (4) in the locked state, and

- to leave the recess (16) of the cylinder core (4) in the release state.

10. Cylinder lock (1) according to one of claims 1 to 9, characterized in that the actuator is designed to rotate the locking element (10) between the release state and the locked state by an angle in the range from approximately 75° to approximately 105°, in particular approximately 90° , to rotate.

11. Cylinder lock (1) according to one of claims 1 to 10, characterized in that a locking pin (17, 17′) projecting into the key channel (5) and movable substantially normal to the longitudinal axis (3) is provided in the cylinder core (4). , which is designed to interrogate a coding on a key (6) inserted into the key channel (5) and to move along its longitudinal extent from a locking position in the locked state to a release position in the released state.

12. Cylinder lock (1) according to claim 11, characterized in that the locking pin (17) blocks an axial movement of the locking slide (7) in its latching position and releases an axial movement of the locking slide (7) in its release position, the locking pin (17 ) is preferably essentially cylindrical, is mounted in a recess of the locking slide (7) and protrudes through a precisely fitting recess in the cylinder core (4) into the key channel (5).

13. Cylinder lock (1) according to claim 11, characterized in that the locking pin (17') blocks actuation of the locking element (10) in its detent position and enables actuation of the locking element (10) in its release position.

14. Cylinder lock (1) according to claim 13, characterized in that the locking pin (17') has a scanning element (18) for engaging in a coding of the key (6), for example a cam groove (19), wherein the locking pin (17 ') When an authorized key (6) is inserted into the key channel (5), it is moved from the locking position to the release position.

15. Cylinder lock (1) according to claim 13 or 14, characterized in that the locking pin (17') blocks rotation of the cam (15) in the locking position, and has a recess (20) which prevents rotation of the cam in the release position (15) allowed.

16. Cylinder lock (1) according to one of claims 13 to 15, characterized in that a tensioning element, for example a magnet or a spiral spring (21), is provided which holds the locking pin (17') in the locking position, so that the locking pin ( 17') can only be brought into the release position by inserting an authorized key (6).

17. Cylinder lock (1) according to claim 15 or 16, characterized in that the recess (20) of the locking pin (17') merges into a shoulder (22) which the cam (15) in the transition from the release position to the locking position in the depression (16) of the cylinder core (3) moves.

18. Cylinder lock (1) according to one of claims 11 to 17, characterized in that the locking pin (17, 17') is designed such that it prevents access from the key channel (5) to the locking element (10) in the locked state.

19. Cylinder lock (1) according to any one of claims 11 to 18, characterized in that the locking pin (17, 17 ') electrical contacts for the transmission of electrical energy from an electrical energy store on the key (6) to the actuator, in particular to an electric motor (11).