Lock cylinder with coupling device

Abstract

The invention relates to a lock cylinder (1) with a knob (21) for actuating a locking bolt (3), wherein the knob (21) can be coupled or uncoupled with the locking bolt (3) by means of a switchable clutch device (6), and the clutch device (6) comprises a clutch lever (62) actuated by a motor (61). To enable a particularly reliable clutch that is also protected against tampering, it is proposed that the clutch lever (62) be divided into two parts and comprise a deflection lever (8) and a locking lever (12) pivotably connected to the deflection lever (8) via a pivot bearing (11).

Description

[0001] The invention relates to a locking cylinder, in particular a knob cylinder, according to the features of the preamble of claim 1.

[0002] In practice, knob cylinders are used to enable convenient operation or to allow for quick escape in an emergency, as no key is required to open a knob cylinder. Electrically coupled knob cylinders also allow for effective and convenient access control without necessarily requiring a key.

[0003] From DE 10 2009 003 315 A1, an electronically clutchable knob cylinder is known. This patent describes a motor with a rotatable actuating shaft which actuates a locking element. The locking element blocks a clutch element to prevent it from moving and thereby cause the clutch element to engage the coupling between the knob and the locking bolt.

[0004] Furthermore, a locking cylinder with a locking bolt is known from DE 10 2020 119 735 A1, wherein the locking cylinder has a coupling adapter which can be actuated by the key or the key tip.

[0005] From CH 701 790 A2, a locking device with a rotor mounted in a stator is known, wherein the rotor can be coupled to an output element and / or locked against the stator by an electronically controlled drive. The electrically controlled drive is arranged in the rotor and rotates with it when the rotor rotates. The electric drive is coupled via a spring element to a coupling element for coupling the rotor to the output element or for locking the rotor against the stator, such that a movement generated by the electric drive can be transmitted to the coupling element via the spring element.

[0006] From DE 10 2005 026 910, a locking cylinder is known with an actuating element and a locking element, which can be coupled together in a rotationally fixed manner or locked together by an electronically actuated coupling element. The coupling element is designed as a lever with two rigidly connected lever arms that can be pivoted about an axis of rotation between two pivot positions.

[0007] The invention is based on the objective of creating an electronically coupling locking cylinder that enables energy-efficient coupling and, in particular, exhibits high tamper resistance.

[0008] This problem is solved according to the invention with a locking cylinder according to the features of claim 1.

[0009] According to the invention, a locking cylinder, in particular a knob cylinder, is proposed, comprising a cylinder housing in which a rotatably mounted cylinder core and a rotatable locking bolt are received, and at least one knob for actuating the locking bolt. The knob can be coupled and uncoupled with the locking bolt via a switchable coupling device, and the coupling device comprises an actuator or a motor and a coupling lever. The coupling lever is pivotably mounted in the cylinder core via a pivot bearing and can be pivoted by the actuator or motor between an engaged position and a disengaged position. Crucially, the coupling lever is divided into two parts and comprises a deflection lever and a locking lever connected to the deflection lever via a pivot bearing.

[0010] Preferably, the clutch lever comprises two pivotally connected parts, namely the deflection lever and the locking lever. Advantageously, the deflection lever is designed as a rigid or torsionally stiff body. In particular, the locking lever can also be designed as a rigid or torsionally stiff body. This enables the clutch lever to transmit forces acting transversely to its longitudinal direction.

[0011] The deflection lever can have two ends. Preferably, one end of the deflection lever is mounted on the pivot bearing, and the other end supports the locking lever via the rotary bearing. The rotary bearing is preferably arranged between the deflection lever and the locking lever to allow the locking lever to move relative to the deflection lever.

[0012] Preferably, the deflection lever and the locking lever, which is rotatably mounted on the deflection lever, together form the clutch lever. The clutch lever extends, in particular, along its longitudinal axis in the axial direction of the locking cylinder. Specifically, the deflection lever is extended axially by the locking lever.

[0013] One advantage of using the two-part clutch lever is that the motor drive cannot be blocked, even in unfavorable clutch situations. This means the motor can always move between the engaged and disengaged positions without jamming, regardless of the clutch situation, even if the locking lever cannot immediately engage or disengage due to an unfavorable position or jamming in the engaged position. This significantly increases the reliability of the lock cylinder. For example, in a situation where engagement is not possible, the clutch lever could be moved from the disengaged to the engaged position. Once the blockage is released by turning the knob, allowing engagement, the second part of the clutch lever, the locking lever, can then engage the clutch, and the lock cylinder can be opened.

[0014] In particular, the cylinder core can be rotatably mounted about an axis of rotation. Preferably, the axis of rotation of the cylinder core runs in the axial direction of the lock cylinder housing. In an advantageous embodiment, the center of mass of the clutch lever can be arranged outside the axis of rotation of the cylinder core in the direction of the uncoupled position, so that when the cylinder core is accelerated, the resulting centrifugal force forces the clutch lever into the uncoupled position. This means that if tampering attempts are made by rotating the cylinder core, i.e., by rotating it about its axis of rotation, the centrifugal force forces the clutch lever into the uncoupled position, thus making engagement at least more difficult or impossible. This increases the security of the lock cylinder, since no coupling can be achieved if the cylinder core is rotated during tampering attempts.

[0015] In particular, the lock cylinder or motor can be powered by a battery or rechargeable battery. The energy-efficient coupling method allows for long battery life. Therefore, the intervals between battery replacement or charging can be extended.

[0016] The knob can be configured as a first knob. In a preferred embodiment, the locking cylinder may comprise only one knob. However, it is also possible for the locking cylinder to comprise a first knob and a second knob.

[0017] Preferably, the pivot bearing between the deflection lever and the locking lever can be implemented, for example, by a pin arranged on the deflection lever or the locking lever engaging positively in an eye of the locking lever or deflection lever and being rotatably mounted there. Alternatively, the pivot bearing can also be implemented, for example, by means of an elongated hole. It can also be provided that the end of the deflection lever or locking lever is designed in a cylindrical shape and the cylindrical section is rotatably mounted in a cylindrical receptacle of the respective other locking lever. Advantageously, the coupling lever is designed in the manner of a pendulum, in that the locking lever can oscillate around the orientation of the deflection lever. Preferably, the orientation of the coupling lever is essentially parallel to the longitudinal extent of the locking cylinder or parallel to the axis of rotation of the locking bolt.

[0018] In a preferred embodiment, it can be provided that the deflection lever is actuated by the actuator or the motor by the actuator or the motor having an output that pivots the deflection lever around the pivot bearing between an engaged position and a disengaged position.

[0019] In particular, a storage spring can be arranged between the deflection lever and the locking lever to actuate the locking lever in a engaged position. Specifically, the storage spring can be charged when the clutch is locked. The energy stored in the storage spring can then be used to move the locking lever into a engaged position as soon as the clutch is released. The storage spring can also store the motor's kinetic energy should it not be possible to engage or disengage the operating lever. This prevents the loss of energy expended by the motor. Once engagement or disengagement is possible again, the clutch or disengagement process can then be carried out by discharging the storage spring, without requiring the motor to be actuated again and thus without further energy consumption.

[0020] In particular, it can be provided that the deflection lever is spring-loaded into a disengaged position. This makes manipulation more difficult, since the deflection lever is pre-tensioned into the disengaged position by the spring and tends to move into the disengaged position if tampered with.

[0021] Preferably, the coupling device can be provided to be connected to the knob, in particular the first knob, in a rotationally fixed manner.

[0022] In a preferred embodiment, it can be provided that the locking bolt is connected to a core adapter in a rotationally fixed manner and that the locking lever engages in a recess of the core adapter in order to couple the knob with the locking bolt.

[0023] In particular, the core adapter can have several recesses. These can be located on the outer area of ​​the cylinder core or cylinder housing, with the locking lever in the center of the cylinder core or cylinder housing. This allows the locking lever to be moved outwards for coupling, engaging in a recess of the core adapter.

[0024] To enable a mechanically stable and tamper-proof design, it can be provided that the core adapter is axially secured in the cylinder core via a locking washer.

[0025] In particular, the core adapter may be rotatably mounted in the cylinder core, or have a sleeve rotatable around the cylinder core, and the recesses may be arranged distributed around the circumference, or the sleeve may have several recesses distributed around its circumference. In particular, the core adapter may have at least two, and in particular several, recesses to allow the locking lever to engage in a recess at at least two, and in particular several, rotational positions of the locking bolt and / or the knob, thus enabling a rotationally fixed coupling of the knob to the locking bolt. For example, two recesses may be provided that are arranged in the rotational positions 0° and 180° to allow engagement at these positions.Naturally, multiple recesses can be provided, for example, three recesses arranged at 120° positions to allow engagement at these rotational positions. Similarly, four recesses can be arranged at 90° positions, or several recesses can be provided distributed around the circumference of the core adapter. The recesses can be equidistant or arranged at irregular intervals.

[0026] In particular, the recesses may be designed to have clearance relative to the locking lever, such that the dimensions of the recesses are larger than the outer dimensions of the locking lever engaging in the recess. This clearance ensures reliable engagement and simultaneously prevents the locking lever from jamming in a recess.

[0027] To enable engagement over a wider rotation range, the dimensions of the recess can be significantly larger than the outer dimensions of the locking lever, for example, twice or three times as large. This allows, for instance, engagement within an angular range of + / - 10° or + / - 20° around the actual engagement position. This ensures secure engagement of the knob in many different angular positions of the knob or locking bolt. Specifically, the recesses can be designed as blind holes. Alternatively, the recesses can be designed as windows into which the locking lever engages or through which it passes completely.

[0028] In an advantageous embodiment, the actuator or motor can be arranged radially within the cylinder core, and in particular, the motor can have an output shaft extending radially. This positions the motor transversely to the clutch lever or the longitudinal axis of the lock cylinder housing, which improves tamper resistance.

[0029] In particular, the two-part clutch lever can act as a kind of pendulum. The locking lever can tilt to one side relative to the deflection lever, essentially oscillating. This is especially relevant if the movement of the locking lever is blocked, for example, by an inability to engage the clutch, causing the locking lever to tilt relative to the deflection lever, i.e., oscillate. A stop can be used to limit the movement of the locking lever, particularly limiting it to one side.

[0030] Preferably, the clutch lever can be arranged extending in an axial direction along the cylinder housing and be pivotable through a certain angular range around the axial direction. In particular, the axial direction runs parallel to the axis of rotation of the locking bolt.

[0031] Preferably, the locking lever can be designed as an L-shaped lever, wherein the lever section of the locking lever, which is bent relative to an axial direction of the cylinder housing, engages in a recess of the core adapter for coupling.

[0032] In an advantageous embodiment, the motor output can be configured as a spiral or helix that interacts with a driver or pin of the deflection lever, particularly such that the pin, which is cantilevered on the deflection lever, engages in the spiral or helix. Designing the motor output as a helix or spiral enables particularly reliable guidance of the deflection lever. Furthermore, the pitch of the helix allows the power transmission to be configured so that engagement and disengagement are possible with relatively few motor revolutions. This reduces the engagement and disengagement time and keeps motor running times relatively short, which contributes to low energy consumption. Additionally, the helix can be designed as an open helix. Preferably, an open helix is ​​understood to mean that the spiral path extends outwards, i.e.,The helix is ​​open towards its circumference, allowing a drive element to engage from the outside. One advantage is that the combination of the open helix and the two-part clutch lever prevents the motor drive from being blocked, even in unfavorable clutch situations, thus further increasing the operational reliability of the lock cylinder.

[0033] To achieve a particularly compact arrangement, the deflection lever can be provided with a recess, in particular a round recess, through which the spiral or helix passes. The deflection lever can either have a round hole through which the spiral or helix passes, or the deflection lever can be curved such that it bends around the spiral or helix on one side. The deflection lever can be arranged to extend only on one side of the spiral or helix. To distribute the load on the pivot bearing of the deflection lever evenly, the deflection lever can advantageously extend around the spiral or helix on both sides, preferably all around.

[0034] In a preferred embodiment, the pin or driver integrally formed on the deflection lever can be secured against unintentional pivoting towards the locking position within the spiral or helix by the spiral or helix positively guiding or supporting the driver or pin. This can be achieved, for example, by forming a stop on the spiral or helix that prevents unintentional movement of the driver or pin towards the locking position. This increases tamper resistance, as the deflection lever is held in the locking position. Even in the event of attempted tampering, such as by vibration or striking the cylinder housing, the deflection lever cannot move from the disengaged position towards the locking position.

[0035] To further increase tamper protection, a preferred embodiment may provide that an axially spring-loaded impact frame is arranged in the cylinder core, and that the output or output shaft of the motor has a polygon, preferably a two-sided, three-sided or four-sided, wherein the polygon interacts with the impact frame to form an impact protection device.

[0036] In particular, it may be provided that the spring of the striking frame presses it into a positive-locking position with the polygon in order to form the striking protection.

[0037] The motor can be designed as a DC motor or as a stepper motor.

[0038] In an advantageous embodiment, a control unit for controlling the actuator or motor can be arranged in the knob or cylinder core. The control unit can have a wireless interface in the cylinder knob, in particular a WLAN interface and / or NFC interface and / or an RFID reader, for receiving or reading an authorization code. The control unit can be configured to check or validate authorization codes and, if a valid authorization code is present, control the actuator or motor to engage the knob.

[0039] The lock cylinder can be designed as a double cylinder or as a half cylinder. Accordingly, the lock cylinder can have only one knob, in particular be designed as a half cylinder, or be designed in another configuration as a double-knob cylinder.

[0040] Advantageously, the lock cylinder can be provided with a second knob. Preferably, the second knob can be non-rotatably connected to the locking bolt.

[0041] One application of the locking cylinder according to the invention is for locks or locking systems where convenient access control and electronic operation are desired. In particular, the locking cylinder according to the invention can be battery-powered and thus offer a long battery life.

[0042] The figures show further examples of design, which are described below. These include: Fig. 1: a double-knob cylinder according to the invention; Fig. 2: a half-section through the cylinder core of the cylinder of the Fig. 1 in disengaged position; Fig. 3: a detailed enlargement from Fig. 2 ; Fig. 4: a coupled position; Fig. 5: a detailed enlargement of the impact protection.

[0043] The figures show exemplary embodiments of the locking cylinder according to the invention. Functionally equivalent features are designated with the same reference symbols. These exemplary embodiments are not intended to be restrictive. Within the scope of protection defined by the claims, a person skilled in the art can, based on their technical expertise, combine and modify the illustrated embodiments.

[0044] In the Fig. 1 The locking cylinder 1 according to the invention is shown as a double-knob cylinder. It has a cylinder housing 2 with two knobs 21 and 22. A rotatable locking bolt 3 is arranged in the locking cylinder housing 2. A door lock, for example, can be operated via the locking bolt 3, i.e., locked and / or unlocked.

[0045] The first knob 21 on the right is designed as an electrically coupling knob 21. This means that the knob 21 is normally disconnected from the locking bolt. To operate the locking bolt 3, the first knob 21 is temporarily coupled to the locking bolt 3, i.e., it is rotationally fixed to the locking bolt 3 for a predetermined period. A control unit 63 with a wireless interface 64 is located inside the knob 21. An authorization code can be transmitted to the control unit 63 via the wireless interface 64, for example, using NFC or an RFID transponder, to enable electrical coupling of the knob cylinder 21. The coupling is controlled by the control unit 63 for a predetermined period. After the predetermined period has elapsed, the control unit 63 automatically initiates the uncoupling of the knob cylinder 21.Alternatively, the control unit 63 can also enable permanent coupling via a permanent access code. This means that until the permanent access is reset, the first knob 21 remains coupled to the locking bolt 3.

[0046] The second knob 22 is located on the left side of the lock cylinder 1. The second knob 22 is permanently and non-rotatably coupled to the locking bolt 3. This means that the lock cylinder can be operated at any time using the second knob 22.

[0047] Fig. 2 Figure 1 shows a half-section through the lock cylinder 1 in the area of ​​the locking bolt 3 and the coupling device 6. The coupling device 6 is located inside the lock cylinder housing 2. The locking bolt 3 is permanently and rotationally fixedly coupled to the left knob 22. The cylinder core 5 of the lock cylinder 1 is rotatable and divided into two parts. The core adapter 4 is associated with the left knob 22 and is rotationally fixed to it and to the locking bolt 3. The right part of the cylinder core 5 is rotationally fixed to the first knob 21. It features the coupling device 6 with the coupling lever 62.

[0048] A core adapter 4 is rotationally fixed to the left part of the cylinder core 5 and enables coupling with the right part of the cylinder core 5. The core adapter 4 is rotatably mounted within the lock housing 2 together with the left part of the cylinder core 5 and has recesses 15 for engaging and disengaging the right knob 21 by means of the coupling device 6. When the locking bolt 3 is rotated, the core adapter 4 rotates with it.

[0049] The coupling device 6 comprises a drive motor 61 and the coupling lever 62. The drive motor 61 is arranged radially or transversely to the coupling lever 62. It is designed as a DC motor (direct current motor) or as a stepper motor. The output of the motor 61 is designed as a spiral or helix 7. The helix 7 interacts with the coupling lever 62 to move the coupling lever 62 between an engaged position and a disengaged position when the helix 7 rotates.

[0050] In the Fig. 2 The disengaged position is shown. The clutch lever 62 is divided into two parts. It has a pivoting lever 8 and a locking lever 12 connected to the pivoting lever 8 via a pivot bearing 11. The clutch lever 62, or the pivoting lever 8, is pivotably mounted in the cylinder core 5 by means of the pivot bearing 10. The clutch lever 62 extends essentially in the axial direction of the cylinder core 5. The clutch lever 62 can be pivoted by the motor 61, i.e., moved between an engaged position and a disengaged position. A spring 9 biases the clutch lever 62, or the pivoting lever 8, into the disengaged position.

[0051] The deflection lever 8 is mounted at one end on the pivot bearing 10 and at its other end supports the locking lever 12 via the pivot bearing 11. Furthermore, the deflection lever 8 has a bracket for the retaining spring 13, which acts between the locking lever 12 and the deflection lever 8 and biases the locking lever 12 into its locking position. A stop 17 arranged on the deflection lever 8 limits the movement of the locking lever 12 towards the locking position. The retaining spring 13 holds the locking lever 12 biased in a position against the stop 17.

[0052] The core adapter 4 is axially secured to the cylinder core 5 by a retaining washer 14. The cylinder core 5 itself is axially secured in the cylinder housing 2 by the retaining ring 16.

[0053] In the Fig. 3 The area of ​​the drive of the clutch assembly 6 is shown enlarged. The helix 7 can be seen below the transversely mounted motor 61. The deflection lever 8 has a round recess through which the helix 7 passes. A driver or pin 81 is integrally formed on the deflection lever 8 and engages with the helix 7. A stop 71 is arranged on the helix 7 above the driver or pin 81, which prevents the pin 81 from lifting off the helix track 72. This prevents the deflection lever 8 from unintentionally moving into the engaged position.

[0054] The locking lever 12 is designed as an L-shaped lever, which is held against the abutment 17 by the storage spring 13. Above the free end of the locking lever 12, the recess 15 of the core adapter 4 is located when the locking cylinder is in a clutched position. In the Fig. 3 In the position shown, the recess 15 is located above the free end of the locking lever 12, i.e. it could engage in this position.

[0055] When the locking bolt 3 is rotated, for example via the second knob 22, the core adapter 4 and thus the recess 15 rotate with it. This means that, depending on the position of the locking bolt 3, the window 15 can move further and thus potentially prevent the locking lever 12 from engaging. The locking lever 12 then cannot engage in a recess 15 and therefore cannot travel its full range of motion. In this case, the pivot bearing 11 allows the deflection lever 8 to move completely into the engaged position, i.e., upwards. The storage spring 13 absorbs the kinetic energy of the motor in this case. If the locking bolt 3 is rotated further in such a position, a recess 15 will eventually come to rest in front of the free end of the locking lever 12. Actuated by the storage spring 13, the locking lever 12 can then engage in the recess 15 and engage.Since the coupling device 6 is rotationally fixed to the first knob 21, the first knob is thus rotationally fixed to the locking bar 3 without the need to switch the motor 61 on again for coupling.

[0056] In the Fig. 4 The coupled position of the locking lever 12 or the clutch lever 62 is shown. The free end of the locking lever 12 engages in the recess 15. When the first knob 21 is actuated, it rotates the clutch device 6 or the clutch lever 62, causing the locking lever 12 to engage the core adapter 4 in the recess 15 and thereby actuate the locking bolt 3.

[0057] In the engaged position according to Fig. 4 The clutch lever 62 and the deflection lever 8 are pre-tensioned by the spring 9, meaning that the deflection lever 8 is actuated into the disengaged position by the spring 9. When the motor 61 is released and moves the deflection lever 8 into the disengaged position, this is done with spring assistance from the spring 9. In this process, the free end of the locking lever 12 disengages from the recess 15, so that the first knob 21 is decoupled from the locking bar 3 and the core adapter 4.

[0058] When the deflection lever 8 is actuated by the motor 61, the driver or pin 81 of the deflection lever 8 moves on the spiral path of the helix 72. The spiral path 72 guides the driver 81. The speed of engagement and disengagement can be determined according to the pitch of the spiral path.

[0059] In the Fig. 5An enlarged view of the motor 61 with a safety device is shown. The safety device comprises a striking frame 18 which is actuated by a spring 19.

[0060] The motor 61 has a two-sided flange 73 at its output, which interacts with the striking frame 18. The striking frame 18 has pressure surfaces at its free end that bear against the two-sided flange 73 under spring pressure. This prevents the output of the motor 61 from rotating due to vibrations during impact manipulation of the lock cylinder 1 and thus unintentionally moving into a engaged position. The spring 9, which forces the deflection lever 8 into the disengaged position, also prevents the deflection lever from unintentionally moving into the engaged position. This ensures effective impact protection, preventing the lock cylinder according to the invention from being manipulated by impacts or vibrations. Reference symbol list

[0061] 1 Lock cylinder 10 Swivel bearing 11 Rotary bearing 12 Locking lever 13 Storage spring 14 Retaining washer 15 Recess 16 Retaining ring on cylinder core 17 Abutment 18 Striker frame 19 Spring (striker frame) 2 cylinder housing 21 first knob 22 second knob 3 Locking bar 4 Core adapter 5 Cylinder core (two-part) 6 Clutch device 61 Motor 62 Clutch lever 63 Control device 64 Interface 7 Helix 71 Stop 72 Helix track, spiral track 73 Polygon, double-sided 8 Deflection lever 81 Driver, pin 9 spring

Claims

1. Lock cylinder, in particular knob cylinder, with a cylinder housing (2) in which a rotatable locking bolt (3) and a rotatable cylinder core are received, and with at least one knob (21) for actuating the locking bolt (3), wherein the knob (21) can be coupled and uncoupled with the locking bolt (3) via a switchable coupling device (6) and the coupling device (6) comprises an actuator or a motor (61) and a coupling lever (62), wherein the coupling lever (62) is pivotably mounted in the cylinder core (5) via a pivot bearing (10) and can be pivoted by the actuator or motor (61) between an engaged position and an uncoupled position. characterized by that the clutch lever (62) is divided into two parts and comprises a deflection lever (8) and a locking lever (12) connected to the deflection lever (8) via a pivot bearing (11).

2. Locking cylinder according to claim 1, characterized by thatthe deflection lever (8) is actuated by the actuator or the motor (61) by the actuator or the motor (61) having an output that pivots the deflection lever (8) about the pivot bearing (10) between an engaged position and a disengaged position.

3. Locking cylinder according to claim 1 or 2, characterized by that a storage spring (13) is arranged between the deflection lever (8) and the locking lever (12) to actuate the locking lever (12) into a engaged position, in particular that the storage spring (13) is charged when the clutch is locked in order to bring the locking lever (12) into a engaged position as soon as the clutch is released.

4. Locking cylinder according to one of the preceding claims, characterized by that the deflection lever (8) is acted upon by a spring (9) in a disengaged position.

5. Lock cylinder according to one of the preceding claims, characterized by thatthe coupling device (6) is connected to the knob (21) in a rotationally fixed manner.

6. Lock cylinder according to one of the preceding claims, characterized by that the locking bar (3) is connected to a core adapter (4) in a rotationally fixed manner and the locking lever (12) engages in a recess of the core adapter to couple the knob (21) to the locking bar (3), and in particular that the core adapter (4) is axially secured to the cylinder core (5) via a locking washer (14).

7. Lock cylinder according to claim 6, characterized by thatthe core adapter (4) is rotatably mounted about the cylinder core (5), or has a sleeve rotatable about the cylinder core (5), and that the core adapter (4) has recesses distributed around its circumference, or that the sleeve has several recesses distributed around its circumference, at least two recesses, in particular several recesses, to form an engagement of the locking lever (12) in a recess (15) and thus a rotationally fixed coupling of the knob (21) to the locking lever (3) at at least two, in particular several, rotational positions of the locking bolt (3) and / or the knob (21), and in particular that the recesses (15) have clearance relative to the locking lever (12) such that the dimensions of the recesses (15) are larger than the outer dimensions of the locking lever (12) engaging in the recess (15).

8. Lock cylinder according to one of the preceding claims, characterized by thatthe actuator or motor (61) is arranged in the cylinder core (5) in a radial direction, in particular that the motor (61) has an output shaft extending in a radial direction.

9. Lock cylinder according to one of the preceding claims, characterized by that the clutch lever (62) is arranged extending in an axial direction of the cylinder housing (2) and is pivotable about a certain angular range around the axial direction.

10. Locking cylinder according to one of claims 7 to 9, characterized by that the locking lever (12) is designed as an L-shaped lever, wherein the lever section of the locking lever (12), which is bent relative to an axial direction of the cylinder housing, engages in a recess (15) of the core adapter (4) for coupling.

11. Locking cylinder according to one of the preceding claims, characterized by thatthe output of the motor (61) has a spiral (7) or a helix (7) which interacts with a driver or pin (81) of the deflection lever (8), in particular interacting in such a way that the pin (81) which is formed projecting onto the deflection lever (8) engages in the spiral (7) or the helix (7), and that the deflection lever (8) preferably has a recess, in particular a round recess, through which the spiral (7) or the helix (7) passes.

12. Locking cylinder according to claim 13, characterized by that the pin (81) in the spiral (7) or the helix (7) is secured against unintentional pivoting towards the blocking position by the spiral (7) or the helix (7) guiding the driver or pin (81) in a positive-locking manner, or by forming a stop (71) on the spiral (7) or the helix (7) which prevents unintentional movement of the driver or pin (81) towards the blocking position.

13. Locking cylinder according to one of the preceding claims, characterized by that in the cylinder core (5) an axially spring-loaded impact frame (18) is arranged, and the output or output shaft of the motor (61) has a polygon (73), preferably a two-sided (73) or three-sided or four-sided, wherein the polygon (73) interacts with the impact frame (18) to form an impact protection.

14. Locking cylinder according to claim 13, characterized by that the spring (19) of the striking frame (18) presses it into a positive locking position with the polygon (73) to form the striking safety.

15. Lock cylinder according to one of the preceding claims, characterized by thata control device (63) for controlling the actuator or motor (61) is arranged in the knob (21) or the cylinder core (5), preferably that the control device (63) has a wireless interface (64) in the cylinder knob, in particular a WLAN interface and / or NFC interface and / or an RFID reader to receive or read an authorization code, wherein the control device (63) is configured to check or validate authorization codes and, if a valid authorization code is present, controls the actuator or motor (61) to engage the knob (21).

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