Key actuating device

Abstract

The invention relates to a key actuating device (6) for turning a key (5) in a door lock (3) of a door (1), and to a use of the key actuating device (6). The key actuating device (6) has a mounting part (7) for fastening the key actuating device (6) to the door (1), and a rotary housing (10) having a key receptacle (12) for receiving the key (5) arranged in a locking cylinder (5) of the door lock (3). A drive arrangement (14) for driving the rotary housing (10) to perform a rotary movement (DB), an electrical power supply (13), and a control unit (19) for controlling the drive arrangement (14) are arranged in a rotary housing interior (11).The key receptacle (12) divides the rotary housing interior (11) into two preferably mirror-symmetrical halves (111, 112), with the electrical power supply (13) being arranged in a first half (111) of the rotary housing interior (11) and the drive assembly (14) being arranged in a second half (112) of the rotary housing interior (11). The drive assembly (14) has a drive motor (141) with a drive shaft (142) and a spur gear (143) arranged on the drive shaft (142), which the drive motor (141) drives via the drive shaft (142). The spur gear (143) engages directly in a toothed ring (17) which is arranged at an end of the rotary housing (10) facing the mounting part (7), and interacts with the toothed ring (17) in such a way that the rotary housing (10) is rotated about its axis of rotation (D), whereby a rotary movement (DB) of the rotary housing (10) is transmitted to the key (5) via the key receptacle (12).The rotating housing (10) and the toothed ring (17) are connected via a bearing (18) in a rotationally fixed and axially immovable manner. Furthermore, the toothed ring (17) is connected to the mounting part (7) in a rotationally fixed manner via a detachable connection, preventing the toothed ring (17) from performing any relative movements, particularly rotational movements, with respect to the mounting part (7).

Description

[0001] The present invention relates to a key actuating device for turning a key in a door lock and a corresponding use of the key actuating device. The key actuating device has a mounting part for attaching the key actuating device to the door. Furthermore, the key actuating device has a rotary housing, which has a key receptacle for receiving a key arranged in a locking cylinder of the door lock. A drive arrangement for driving the rotary housing to rotate, an electrical power supply, and a control unit for controlling the drive arrangement are arranged in the interior of the rotary housing. State of the art

[0002] For the mechanical locking of doors, for example of buildings, houses, apartments or rooms, etc., door locks, usually so-called mortise locks, are commonly used today. These locks hold the door in the frame and thus closed. To lock the door, a door lock usually has a mechanical locking unit or a locking cylinder. Using a suitable key, a cylinder core arranged in a cylinder profile can be turned. This moves a locking mechanism usually located approximately in the middle of the cylinder profile (e.g. a locking lug or a driver that can be rotated relative to the cylinder profile) to lock a door (i.e., to open or close it). With so-called change locks, a so-called lock latch can also be operated with the key to open the door if a bolt for locking the door lock has been fully retracted into the door lock, for example. Such change locks are used, for example,Frequently used on entrance, house, or apartment doors, with a usually permanently mounted knob on one side of the door and a door handle on the inside for operating the latch or opening the door. Furthermore, so-called double cylinders are often used to lock the door on doors of apartments, houses, etc., which can be locked on both sides with the appropriate key.

[0003] However, there is now increasing interest in using electromechanical or electronic locking units instead of the familiar mechanical door locks, for example to be able to conveniently lock a door keyless - e.g. via a direct or indirect connection to a mobile unit (e.g. remote control, mobile device, etc.) or using a button and, if necessary, with appropriate user identification (e.g. fingerprint, etc.). In order to convert a purely mechanical door lock, for example a mortise lock with a locking cylinder, into an electromechanically operated and electronically controllable door lock, key operating devices can be used as easy-to-install retrofit solutions. Such key operating devices are known, for example, from DE 10 2004 021 704 B3, EP 3 000 953 A1 or DE 20 2022 101 282 U1.

[0004] Such a key activation device allows a user, when installed, to automatically lock and unlock a door (e.g., front door, apartment door) easily and conveniently via the mobile unit, such as a remote control, mobile device, etc., and / or by operating an operating element (e.g., button, switch, etc.), and in particular to fully unlock it - i.e., the lock latch is also retracted into the door lock, allowing the door to be opened, for example, by simply pushing it open. To retrofit a mechanical door lock, the key activation device can be mounted, for example, on the inside of the door to be locked (e.g., apartment door, front door, etc.) using a special adapter plate as a mounting part on the locking cylinder of the door lock and / or on the door leaf. Such a key activation device then has, for example, a mostly cylindrical rotating element (e.g.,The key-operated device has a key holder (e.g., rotary knob, key cage), which can be indirectly coupled to the door lock in a drive-effective manner. The coupling is achieved, for example, via a key receptacle in the rotary element. When the key-operated device is mounted on the door, the key holder receives a key assigned to the door lock and inserted in the locking cylinder of the door lock. After installation, the key receptacle then engages, for example, at least the key head of the key inserted in the door lock.

[0005] In order to enable the door or door lock to be locked, the key operating device has an electric drive or an electric drive arrangement. The drive arrangement, which consists, for example, of at least one electric drive motor and an associated gear, is coupled to the rotating element, wherein a rotary movement of the drive motor as an actuator is transmitted via the gear to the rotating element. This moves or rotates the rotating element and thus the key inserted in the door lock in order to lock the door lock - i.e. to lock or unlock the door and, if necessary, to completely unlock it after unlocking. The drive arrangement, in particular the drive motor, is supplied with energy by means of an electrical energy supply provided in the key operating arrangement (e.g. battery, etc.) and is controlled accordingly via a control unit provided in the key operating arrangement.In most cases, at least the drive system and the electrical power supply, and possibly also the control unit, are arranged, for example, in a stationary housing outside the area of ​​the rotating element, usually below the rotating element - as is shown, for example, in DE 10 2004 021 704 B3 or in DE 20 2022 101 282 U1. However, such an arrangement or design of a key operating device usually has a relatively large design or corresponding dimensions, as a result of which the key operating device often takes up a relatively large amount of space in the area of ​​the door lock. Since the key operating device is usually designed to be fastened directly or indirectly to a protruding section of the locking cylinder via the adapter plate as a mounting part, for example by means of screws or clamps, the design can lead to, for example, incorrect orIf correctly aligned, the key operating device, particularly the fixed housing for the drive assembly and power supply, is flush with the door frame. The key operating device may therefore cause obstructions when opening the door and may be damaged.

[0006] DE 20 2023 101 339 U1 discloses another key actuating device having a compact and space-saving design. The key actuating device has a cylindrical rotating housing in which the drive assembly, comprising a drive motor and a gear train, as well as three battery cells, are arranged symmetrically to the key receptacle or to a longitudinal axis of the rotating housing. The drive motor is adapted in shape and dimensions to the battery cells. During operation of the drive motor, an end element of the multi-part gear train interacts with an internal toothing of a toothed ring. The toothed ring simultaneously forms the mounting part with which the key actuating device is attached to the door lock, with the rotating housing being seated on the toothed ring via a bearing.The key actuation device shown in DE 20 2023 101 339 U1 therefore has the disadvantage that, due to the predetermined shape and position of the motor, a relatively complex gear transmission is used. This can lead to malfunctions (e.g., jamming, etc.), increased noise, and higher manufacturing costs due to the large number of elements or gears. Furthermore, the key actuation device is difficult or relatively expensive to adapt to different locking cylinder shapes, such as profile cylinders, round cylinders, oval cylinders, etc. Description of the invention

[0007] The invention is therefore based on the object of creating an improved key actuating device which, in addition to a compact design, also has a simple and easy-to-maintain construction and can be used in a simple, cost-effective and flexible manner with different existing door locks or locking cylinder shapes.

[0008] This object is achieved by a key actuation unit according to the independent claim. Advantageous embodiments of the present invention are described in the dependent claims.

[0009] According to the invention, the object is achieved by a key actuating device of the type mentioned at the outset, in which the key receptacle divides the rotary housing interior into two preferably mirror-symmetrical halves, wherein the electrical energy supply of the key actuating device is arranged in a first half of the rotary housing interior, and wherein the drive arrangement is arranged in a second half of the rotary housing interior, which drive arrangement has a drive motor and a spur gear arranged on a drive shaft, wherein the drive motor drives the spur gear via the drive shaft.Furthermore, a toothed ring is arranged at an end of the rotary housing facing the mounting part, into which the spur gear directly engages and with which the spur gear interacts in such a way that the rotary housing is rotated about a rotational axis and the rotary movement of the rotary housing is transmitted via the key receptacle to a key received in the key receptacle. The toothed ring is connected to the mounting part in a rotationally fixed manner via a detachable connection. Furthermore, a bearing is provided between the rotary housing and the toothed ring, which connects the rotary housing to the toothed ring in a rotationally fixed but axially immovable manner.

[0010] The main aspect of the proposed solution is that, in addition to a compact design, the key operating device has a very simple drive arrangement for rotating the rotating housing with the key receptacle about its axis of rotation, whereby the rotary movement of the rotating housing can be transmitted via the key receptacle to a key received in the key receptacle. In addition to the drive motor, the drive arrangement only has a spur gear attached to the drive shaft. The spur gear, together with the internally toothed ring, forms a so-called internal gear drive. The ring gear is arranged at the end of the rotating housing facing the mounting part and thus the door or door leaf (when the key operating device is mounted).The toothed ring is connected to the mounting part via the detachable connection in a rotationally fixed manner, where "rotationally fixed" means that no relative movements, especially rotational movements, occur between the toothed ring and the mounting part, and the toothed ring cannot be rotated relative to the mounting part. With a mounted key operating device, which is attached to the door or door leaf and / or the door lock by means of the mounting part, the toothed ring is held in position by the mounting part attached to the door and / or the door lock, or is fixed by the mounting part attached to the door or the door lock via the detachable connection, while the spur gear, driven to rotate by the drive motor, rolls on the toothed ring. With this very simple internal gear, the direction of rotation of the key operating device for locking or unlocking the door lock can be changed very easily.Depending on the direction of rotation of the spur gear—specified by the drive motor—the rotary housing, and thus the key held in the key holder, is rotated into a locked or unlocked position, or a fully unlocked position. The very simply designed gear mechanism is also highly error-prone and can be easily maintained and repaired. Furthermore, the arrangement of the power supply and drive assembly in two different halves of the rotary housing interior also makes them easy to maintain or replace.

[0011] Furthermore, the mounting part is very easy to replace thanks to the detachable connection to the toothed ring. The key actuation device can thus be adapted very easily and without great effort to the respective door lock or the cylinder shape used (e.g., profile cylinder, round cylinder, oval cylinder, etc.). This allows a mechanical door lock to be converted or upgraded to an electromechanical or electronic door lock easily and without great effort, such as replacing the locking cylinder, etc.

[0012] It is advantageous if the control unit of the key actuation device is configured to determine a current angle of rotation of the key by measuring the running time of the drive motor and by measuring the current supplied to the drive motor. This makes it possible to easily detect and record a rotational position of the rotary housing and thus a position or key position of the key in the locking cylinder without using an additional position sensor in the key actuation device. Ideally, a current sensor, in particular a shunt, can be provided for this purpose, which measures the current supplied to the drive motor during the running time and transmits the measured current values ​​to the control unit. The control unit advantageously has a computing unit and a memory unit, for example to determine the current angle of rotation of the key and to store the angle of rotation or other significant values ​​(e.g.The key can be stored (e.g., operating time and associated current value) for specific key positions (e.g., locked position, unlocked position, key position for complete unlocking). Ideally, the control unit or the electronic components of the control unit and also the current sensor are arranged on a circuit board, which is mounted on an end of the rotary housing facing away from the mounting part or the door in the interior of the rotary housing. The circuit board can advantageously be aligned horizontally to the rotary housing's axis of rotation.

[0013] Furthermore, it is advantageous if the key operating device has a communication interface for wireless communication, via which the key operating device can be remotely controlled using a remote control and / or a mobile device. The wireless communication can be implemented, for example, via WLAN, Bluetooth, NFC, or another short-range radio connection. This means that the key operating device, if mounted on the inside of a door, can ideally also be operated from the outside—i.e., in front of the outside of the door—via the remote control and / or the mobile device (e.g., a smartphone, etc.).

[0014] Alternatively or additionally, the key operating device can have a capacitive button for actuating the key operating device. The capacitive button can be used to operate the key operating device very easily by lightly pressing or touching the top of the key operating device. The capacitive button is based on the fact that, for example, a plate or spring element (e.g. plate spring, coil spring, etc.) is displaced or deformed by the pressure of the contact, whereby a distance to a second plate or sensor element and thus an electrically measurable capacitance changes. The changed capacitance is then transmitted, for example, to the control unit of the key operating device as a control signal, and the door lock is either locked or unlocked or, if necessary, fully opened by touching the key operating device.Ideally, the capacitive button is located on the top side of the key-operated device, opposite the mounting part or, when the key-operated device is installed, facing away from the door or door leaf. This allows the capacitive button to be easily touched or pressed by a user.

[0015] A practical embodiment of the key operating device provides that the key operating device is configured to emit optical and / or acoustic status signals. The status signals can provide a user with a visual or acoustic indication that the door has been or is unlocked, for example. Ideally, acoustic signals are also visible to the user on the outside of the door, so that the user knows when the door is locked or unlocked, for example. Ideally, the key operating device has loudspeakers for emitting the acoustic status signals. The loudspeakers can be arranged in the second half of the rotating housing to save space, for example above or below the drive motor, with the loudspeakers being connected to the control unit or the circuit board, for example, via a cable connection routed in the rotating housing. Display elements for emitting or displaying optical status signals can, for example,be arranged on the circuit board and indicated, for example, by an optical display (e.g. LED) on the top of the key device.

[0016] Furthermore, it is advantageous if the key actuating device has a cover cap which is adapted to the shape of the rotating housing (e.g. cylindrical shape). The cover cap can be designed so that it can be pushed onto the rotating housing and encloses at least the rotating housing and the control unit. For this purpose, a base of the cover cap can cover the control unit or circuit board with the components of the control unit arranged at the end of the rotating housing facing away from the mounting part and protect it from contamination. The cover cap can be attached or secured to the rotating housing, for example, using a lock to prevent it from moving. Ideally, the cover cap is made of an elastic material, for example plastic.

[0017] In a practical embodiment of the key actuation device, a holding device is provided within the second half of the rotating housing interior, to which the drive motor can be attached. The drive motor can be very easily fixed in the second half by the holding device in a position predetermined by the holding device, and displacement or other movement of the drive motor - especially when actuating the key actuation device - can be prevented. Threaded pins or worm screws, for example, can be used to attach the drive motor. These ideally enable space-saving attachment of the drive motor and are adjustable, for example to better fix the drive motor during use of the key actuation device and / or to adjust it in the second half of the rotating housing interior.

[0018] Furthermore, it is advantageous if a protective device for the spur gear mounted on the drive shaft is arranged in the second half of the rotary housing interior, at the end of the rotary housing facing the mounting part. The protective device primarily serves to protect the spur gear from contamination and damage by covering the spur gear or separating the second half of the rotary housing interior from the mounting part.

[0019] Ideally, the electrical energy supply is designed as a rechargeable energy storage unit, for example as an accumulator or rechargeable battery unit. For electrically recharging the energy storage unit, the key actuation unit can have a charging port or charging socket. The charging port can be arranged, for example, on the rotating housing of the key actuation device. Alternatively, one or more primary batteries could of course also be used as the electrical energy supply. However, the use of an electrically rechargeable energy storage unit eliminates the need for repeated battery replacement, which would at least require removing the cover from the key actuation unit and / or opening the rotating housing.

[0020] The object is also achieved by using the key operating device according to the invention for turning a key in a door lock. For this purpose, the key is inserted into a locking cylinder of the door lock and the key operating device is fastened to the door and / or the door lock with a mounting part, wherein the key inserted in a locking cylinder of the door lock is received in a key receptacle in a rotating housing of the key operating device. If the key operating device is actuated, for example, via radio (e.g. remote control, mobile device, etc.) or a button, the rotating housing is rotated about a rotation axis by a drive device of the key operating device and a rotary movement of the rotating housing is thereby transmitted via the key receptacle to the key received in the key receptacle.Ideally, the door lock is automatically locked or unlocked by the key operating device and, if necessary, completely unlocked. Short description of the characters

[0021] The present invention is described below with reference to the Figures 1 to xx, which show exemplary, schematic and non-limiting advantageous embodiments of the invention. Fig. 1 a simplified perspective view of parts of a key operating device attachable to a door or door lock Fig. 2 a longitudinal section through the key operating device in the assembled state along a section line A - A Fig. 3 a cross-section through the key operating device along a section line B - B Implementation of the invention

[0022] Figure 1shows, by way of example and schematically, part of a door 1 or a door leaf 1. The door 1 or the door leaf 1 has, in a known manner, a door handle 2 and a door lock 3 with a locking cylinder 4, wherein the door lock 3 is designed, for example, as a mortise lock. A key 5 matching the locking cylinder 4 can be inserted into the locking cylinder 4. By turning the key 5 inserted into the locking cylinder 4, a cylinder core can be turned and thereby a locking mechanism (e.g. locking lug, driver, etc.) usually arranged approximately in the middle of the locking cylinder 4 can be actuated in order to lock the door 1 or to unlock and open it.

[0023] The door lock 3 has a bolt 31, which is partially displaced from the door lock 3 into a recess in the frame (not shown for the sake of simplicity) by turning the key 5 into a locked position. If the key 5 is moved to an unlocked position, the bolt 31 is retracted back into the door lock 3. The door lock 3 also has a latch 32 that is spring-loaded in the closing direction and, when the door 1 is closed, projects into another recess in the frame (not shown for the sake of simplicity) and keeps the door closed. To open the door 1, with the bolt 31 retracted into the door lock 3, the latch 32 must also be retracted into the door lock 3.This can be done either by operating the door handle 2 or, in the case of so-called interchangeable locks, by further moving the key 5 in the locking cylinder 4 from the unlocking position to a complete unlocking position, in which the latch 32 is also retracted into the door lock 3.

[0024] A key actuating device 6 is provided for automatically moving the key 5 into the locked position or into the unlocked position or into the fully unlocked position. The key actuating device 6 is, for example, rotationally symmetrical - i.e., upon rotation of the key actuating device 6 about a rotational axis D by any predeterminable angle (which is not 0° or 360°), the key actuating device 6 is mapped onto itself. Such a rotationally symmetrical key actuating device 6 can, for example, be cylindrical (as in Figure 1shown by way of example), but other rotationally symmetrical shapes, such as truncated cone-shaped, etc., would also be conceivable. The shape of the key actuating device 6 is largely determined by a shape of a rotary housing 10 of the key actuating device 6, in which at least an electrical power supply 13 of the key device 6, a drive arrangement 14 and a control unit 18 are arranged - as can be seen from Figure 2 will be described in more detail.

[0025] To attach the key actuating device 6 to the door 1, the key 5 is first inserted into the locking cylinder 4. Then, the key actuating device 6 is pushed, for example, onto a portion of the locking cylinder 4 that projects beyond the door leaf 1 and secured to this portion. For this purpose, the key actuating device 6 has a mounting part 7, which is designed to attach the key actuating device 6 to the door 1, in particular to the locking cylinder 4. In order to be able to describe the mounting part 7 in more detail, the mounting part 7 is shown in Figure 1shown separately from the key operating device 6. For attaching the key operating device 6 to the door 1 or to the locking cylinder 4, the mounting part 7 has an outlet 71. The outlet 71 is ideally designed such that, on the one hand, the key head 51 of the key 5 fits through the outlet 71 in order to receive at least the key head 51 in a key receptacle 12 during assembly of the key operating device 6, and that, on the other hand, the section of the locking cylinder 4 protruding beyond the door leaf 1 can be received by the outlet 71. For attaching the key operating device 6 to the locking cylinder 4, the mounting part 7 has, for example, through holes 72 on an outer side. Screws, locking screws, etc. can be inserted into the through holes 72 in order to fix the key operating device 6 to the door 1 or to the section of the locking cylinder 4 protruding beyond the door leaf 1.

[0026] The mounting part 7 is connected by means of a detachable connection in a rotationally fixed manner to a toothed ring 17, which is arranged at an end of the rotary housing 10 facing the mounting part 7, and thus the door leaf 1. The detachable connection between the mounting part 7 and the toothed ring 17 can, for example, Figure 1shown by way of example, be designed as a screw connection. For this purpose, the mounting part 7 can, for example, have a plurality of through holes 73 in which screws 74, feather keys or similar fastening means are attached in order to create a detachable connection with the toothed ring 17. The through holes 73 and the toothed ring 17 can have corresponding threads in the case of a screw connection or can be designed to suit the respective fastening means. Alternatively, it would also be conceivable for the connection between the mounting part 7 and the toothed ring 17 to be designed as a locking or snap connection, in which the mounting part 7 and / or the toothed ring 17 have joining elements which interlock in a detachable, positive-locking manner.

[0027] Due to the detachable connection between the mounting part 7 and the toothed ring 17, for example, a mounting part 7 can be selected which has an outlet 71 matching the shape of the respective locking cylinder 4 (e.g., profile cylinder, round cylinder, oval cylinder, etc.). Furthermore, it is also possible to use a mounting part 7 which is suitable for fastening the key operating device 6 directly to the door leaf 1 or to a rosette, for example if the locking cylinder 4 has no or only a very small section projecting beyond the door leaf 1. The mounting part 7 can then be designed such that the key operating device 6 can be mounted via this mounting part 7, for example, directly on the door leaf 1 - e.g., by one or more mounting sections which project beyond a cross-section of the key operating device 6 and are designed accordingly for mounting on the door leaf 1 - e.g.,with through holes for fastening with screws. Thanks to the detachable connection, the mounting part 7 can be easily replaced and flexibly adapted to the specific installation conditions of the respective door 1.

[0028] The key operating device 6 has - as in Figure 1shown - a cover cap 8, which protects the rotary housing 10 and the parts of the key actuating device 6 arranged in an interior space 11 of the rotary housing 10. The cover cap 8 can be pushed onto the rotary housing 10 and is therefore adapted in its design to the shape of the rotary housing 10. The cover cap 8 can, for example, be cylindrical like the rotary housing 10, but other rotationally symmetrical shapes (e.g., truncated cone-shaped, etc.) would also be conceivable. The cover cap 10 encloses at least the rotary housing 10, but can also protrude beyond the end of the rotary housing 10 facing the mounting part 7 and, for example, at least partially cover the mounting part 7. In order not to hinder a rotary movement DB of the key actuating device 6, a bearing can be provided, for example, between the cover cap 10 and the mounting part 7. Furthermore, a locking device 81 can be provided on the rotary housing 10, which, for example,locked into an outlet in the cover cap 8 and secures the cover cap 10 to the rotating housing 10.

[0029] Furthermore, the cover cap 8 can have an outlet for a charging port 82 or a charging socket 82. The electrical power supply 13 of the key actuation device 6 can be charged via the charging port 82 if a rechargeable energy storage unit (e.g., battery unit, accumulator, etc.) is used as the power supply 13. The charging port 82 can, for example, have a removable cover to protect the charging port 82 from contamination when not in use.

[0030] Furthermore, the key operating device 6 can have a capacitive button 9, via which the key operating device 6 can be manually operated by a user by touch or by pressure, e.g., with a finger. The capacitive button 9 is arranged, for example, on an upper side of the key operating device 6, which is opposite the mounting part 7 or, when the key operating device 6 is mounted, faces away from the door 1, so that the button can be very easily touched or pressed. The key operating device 6 can also have an optical display (in Figure 1 not shown for reasons of clarity). The optical display (e.g. small display, colored LEDs, etc.) can, for example, indicate to the user the current status of the door lock 3 (e.g. locked, unlocked, etc.) by means of optical status signals.

[0031] With reference to Figure 2An exemplary structure of the key actuating device 6 will now be described in more detail. Figure 2 shows a longitudinal section along a section line A - A through the key actuating device 6 in the assembled state.

[0032] The key operating device 6 is attached to the door 1 and / or the door lock 3 via the mounting part 7. For this purpose, as shown in Figure 2 As shown by way of example, a section of the locking cylinder 4 projecting beyond the door leaf 1 is received by the outlet 71 and the key confirmation device 6 is fastened to this section, e.g. by means of screws or locking screws. The mounting part 7 is connected to the toothed ring 17 via a detachable connection (e.g. screw connection, locking or snap connection), which Figure 2not shown for the sake of simplicity. The toothed ring 17 is arranged at the end of the rotary housing 10 which faces the mounting part 7 and thus the door or the door leaf 1. The rotary housing 10 is seated on the toothed ring 17 via a bearing 18, so that when the key actuating device 6 is mounted on the door 1, an axis of rotation D of the rotary housing 10 and thus of the key actuating device 6 coincides with an axis of rotation of the cylinder core of the locking cylinder 4. The bearing 18, by means of which the rotary housing 10 is connected to the toothed ring 17 in a rotatable and axially non-displaceable manner, is fixedly connected to the toothed ring 17. The bearing 18 can, for example, be pressed onto the toothed ring 17.

[0033] The key 5 inserted in the locking cylinder 4 is received by the key receptacle 12 when the key actuating device 6 is mounted. The key receptacle 12 is designed such that at least the key head 51 can be completely received. The key receptacle 12 has, for example, a pocket shape and is open on one side at the end of the rotary housing 10 facing the mounting part 7. In cross section, the key receptacle 12 can have the shape of an elongated slot. This means that the cross section of the key receptacle 12 essentially has the shape of an elongated rectangle, the length and width of which are adapted to the key head 51 (e.g. width, thickness), so that the key head 51 can be received by the key receptacle 12 on the one hand and can be carried along by the rotary movement DB of the key actuating device 6 or the rotary housing 10 on the other.Furthermore, the key receptacle 12 is arranged symmetrically to the rotational axis D of the rotary housing 10 and divides an interior space 11 of the rotary housing 10 into two preferably mirror-symmetrical halves 111, 112.

[0034] The electrical power supply 13 of the key actuation device 6 is arranged in a first half 111 of the rotating housing interior 11. For example, one or more primary batteries can be used as the electrical power supply 13. However, to prevent repeated replacement of the primary batteries, an accumulator or rechargeable battery unit 13 can also be used as the power supply 13, which can be charged via the charging connection 82 or the charging socket 82 in the rotating housing 10.

[0035] The drive assembly 14 is arranged in the second half 112 of the rotary housing interior 11. The drive assembly 14 has a drive motor 141, which drives a drive shaft 142 to perform a rotary movement E. A gear 143 or spur gear 143 is attached to the drive shaft 142. The spur gear 143 engages directly with the toothed ring 17, which has an internal toothing, and forms an internal gear with the toothed ring 17. The spur gear 143 interacts with the toothed ring 17 in such a way that the rotary housing 10 is rotated about the rotation axis D. The rotational movement DB of the rotary housing 10 about the rotation axis D is transmitted via the key receptacle 12 to the key 5, so that the latter is automatically rotated in the door lock 3 by the key actuating device 6 in order to lock or unlock the door lock 3 or to completely unlock it (i.e. also to retract the latch 32 into the door lock 3).For this purpose, the spur gear 143 rolls on the toothed ring 17, driven by the drive motor 141 via the drive shaft 142, and in doing so takes the rotary housing 10 with the key receptacle 12 with it. The toothed ring 17 is connected in a rotationally fixed manner to the mounting part 7 by means of the detachable connection and, when the key actuating device 6 is mounted, is also fixed via the mounting part 7 fixed to the door 1 or the locking cylinder 4. The drive device 14 or the drive motor 141 is attached to a holding device 15 in the second half 112 of the rotary housing interior 11 and is secured by means of fastening elements (in . Figure 2 not shown). Screws or threaded pins, for example, can be provided as fastening means. For example, at least one bearing 151 is arranged between the drive shaft 142 and the holding device 15.

[0036] Furthermore, a protective device 16 is arranged in the second half 112 of the rotary housing interior 11 at the end of the rotary housing 10 facing the mounting part 7. The protective device 16 primarily protects the spur gear 143 from contamination and is designed, for example, such that a part of the protective device 16 is arranged at least partially between the spur gear 143 and the mounting part 7 or the outlet 71 in the mounting part 7, and another part of the protective device 16 separates the spur gear 143 from the key receptacle 12. The protective device 16 can, for example, have an L-shaped cross-section.

[0037] Furthermore, the key actuating device 6 has a control unit 19 for controlling the drive device 14. The control unit 19 can, for example, be arranged at an end of the rotary housing 10 facing away from the mounting part 7. In order to control the drive device 14 or the drive motor 141 accordingly, the control unit 19 is configured to determine a current angle of rotation of the rotary housing 10 and thus a current position of the key 5 in the door lock 3 or locking cylinder 4 by measuring the running time of the drive motor 141 and by measuring a current supplied to the drive motor 141 by the power supply 13. The current is measured using a current sensor 20, which measures the current supplied to the drive motor 141. A shunt, for example, can be used as the current sensor 20.The control unit 19 can comprise at least one computing unit and one memory unit, wherein the current key position is determined by means of the computing unit, for example. This means that the control unit 19 or the computing unit determines the current angle of rotation of the key 5 and thus also knows the key position - i.e., a current position of the key 5 in the locking cylinder 4. This means that the control unit 19 knows, for example, in which direction of rotation and how long or how far the rotating housing 10 and thus the key 5 must be moved for locking, unlocking or complete unlocking. Values ​​for specific key positions can be stored, for example, in the memory unit of the control unit 19. The control unit 19 or the components that form the control unit 19 can be arranged, for example, on a circuit board 21.The circuit board can be aligned horizontally to the rotation axis D of the rotary housing 10 and arranged at the end of the rotary housing 10 facing away from the mounting part 7. The current sensor 20 can also be arranged on the circuit board 21.

[0038] In order to lock or unlock a door lock 3 using the key actuation device 6, the key actuation device can be actuated, for example, via a remote control and / or a mobile device (e.g., smartphone, touchpad, etc.). For this purpose, the key actuation device 6 can have a communication interface for wireless communication. The wireless communication between the key actuation device 6 and the remote control or the mobile device can take place, for example, via WLAN, Bluetooth, NFC, or another short-range radio connection.

[0039] Furthermore, the key actuating device 6 can have a capacitive button 9, via which the door lock 3 can be locked or unlocked by touch or by means of light pressure and, if necessary, completely unlocked. The button 9 can, for example, be provided on the upper side of the key actuating device 6, which is opposite the mounting part 7 or, after mounting of the key actuating device 6, faces away from the door 1 and has, for example, a spring element 91 and a sensor element 92. The spring element 91 is, for example, attached to the rotary housing 10 - at the end facing away from the mounting part 7. The spring element 91 is displaced or deformed by the pressure of the contact and brought closer to the sensor element 92, which can, for example, be arranged on the circuit board 21. By changing a distance between the spring element 91 and the sensor element 92, an electrically measurable capacitance is changed, which, for example,can be transmitted to the control unit 19 of the key actuating device 6 as a control signal.

[0040] Furthermore, the key actuating device 6 can emit not only optical but also acoustic status signals (e.g., a tone for "door lock locked," a tone for "door lock open"). For this purpose, one or more loudspeaker units can be arranged in the second half 112 of the rotating housing interior 11, which, for reasons of clarity, are Figure 2 are not shown. The loudspeaker units can, for example, be mounted above or below the drive motor 141 in the second half of the rotary housing interior 11 and connected to the control unit 19 via a cable connection implemented in the interior 11 of the rotary housing 10.

[0041] Figure 3shows, by way of example, a cross-section through the key actuating device 6 in the region of the internal gear mechanism formed by the spur gear 143 of the drive arrangement 14 and the toothed ring 17 along a section line B - B in the direction of view towards the mounting part 7 or the door leaf 1 or the locking cylinder 4. Figure 3shows the rotating housing 10, which is connected to the toothed ring 17 via the bearing 18 in a rotating but axially non-displaceable manner. The bearing 18 is firmly connected to the toothed ring 17, whereby the bearing 18 can, for example, be pressed onto the toothed ring 17. The toothed ring 17 is also connected in a rotationally fixed manner to the mounting part 7 via a detachable connection, so that relative movements, in particular rotational movements, between the toothed ring 17 and the mounting part 7 are prevented. The mounting part 7 is, for example, fixed to the locking cylinder 4, which projects, for example, into the outlet 71 of the mounting part 7. Alternatively or additionally, the mounting part 7 can also be fixed, for example, to the door leaf 1 or the rosette of the door lock 3. By fixing the mounting part to the locking cylinder 4 and / or to the door leaf 1, the toothed ring 17 is also fixed or immovable via the connection to the mounting part 7.

[0042] The key 5 is inserted into the locking cylinder 4 and projects through the outlet 71 in the mounting part 7 and is received by the key receptacle 12. When actuated via the capacitive button 9, by a remote control or via an application on a mobile device (e.g. smartphone), the key actuating device 6 or the rotary housing 10 is moved by the drive motor 141 of the drive device 14 about the rotation axis D, which - as shown, for example, in Figure 3 evidently largely coincides with a rotational axis of a cylinder core of the locking cylinder 4. The rotational movement DB of the key actuating device 6 or the rotating housing 10 is transmitted to the key 5 via the key receptacle 12, and the key 5 is rotated in the door lock 3.

[0043] The rotary movement DB of the key actuating device 6 or the rotary housing 10 is effected by the drive device 14. For this purpose, the drive motor 141 drives the drive shaft 142 and thus the spur gear 143 mounted on the drive shaft 142 to the rotary movement E. The spur gear 143, which is protected in the direction of the mounting part 7 or door leaf 1 and in the direction of the key receptacle 12 by the protective device 16, primarily against dirt, engages directly in the internally toothed ring gear 17 and rolls on the ring gear 17. This means that the spur gear 143 interacts with the ring gear 17 in such a way that the rotary housing 10 is rotated about the rotation axis D and executes the rotary movement DB. The key 5 received in the key receptacle 12 is carried along by the key receptacle 12, whereby the door lock 3 can be automatically locked or unlocked and completely unlocked. The direction of the rotary movement DB is specified by the control unit 19 - ieFor example, it is determined from the key position whether the key 5 is to be moved into the locking position or the unlocking position or into the position for complete unlocking, and the drive arrangement 14 or the drive motor 141 is controlled accordingly by the control unit 19. List of reference symbols

[0044] 1 Door or door leaf 2 Door handle 3 Door lock 31 Bolt 32 Latch 4 Locking cylinder 5 Key 51 Key head 6 Key operating device 7 Mounting part 71 Outlet 72 Holes for attaching the mounting part to the door 73 Holes for attaching to the toothed ring 74 Fastening means 8 Cover cap 81 Cover cap locking device 82 Charging connection 9 Capacitive button 91 Spring element 92 Sensor element 10 Rotating housing 11 Rotating housing interior 111 First half of the rotating housing interior 112 Second half of the rotating housing interior 12 Key receptacle 13 Electrical power supply 14 Drive assembly 141 Drive motor 142 Drive shaft 143 Spur gear 15 Holding device 151 Holding device bearing 16 Protective device 17 Toothed ring 18Bearing 19Control unit 20Current sensor 21Printed circuit board DRotational axis of the key operating device DBRotational movement of the key operating device or the rotating housing1 ERotational movement of the drive shaft A, BSection line

Claims

1. Key operating device (6) for turning a key (5) in a door lock (3) of a door (1), which has at least one mounting part (7) for fastening the key operating device (6) to the door (1) and a rotary housing (10) with a key receptacle (12) for receiving the key (5) arranged in a locking cylinder (4) of the door lock (3), wherein a drive arrangement (14) for driving the rotary housing (10) to a rotary movement (DB), an electrical power supply (13) and a control unit (19) for controlling the drive arrangement (14) are arranged in a rotary housing interior (11), characterized in that the key receptacle (12) divides the rotary housing interior (11) into two preferably mirror-symmetrical halves (111, 112), that the electrical power supply (13) is arranged in a first half (111) of the rotary housing interior (11), that in a second half (112) of the rotary housing interior (11) the drive arrangement (14) is arranged, which has a drive motor (141) and a spur gear (143) arranged on a drive shaft (142), wherein the drive motor (141) drives the spur gear (143) via the drive shaft (142), that at an end of the rotary housing (10) facing the mounting part (7), a toothed ring (17) is arranged, in which the spur gear (143) directly engages and with which the spur gear (143) cooperates in such a way that the rotary housing (10) is rotated about an axis of rotation (D) in order to transmit a rotary movement (DB) of the rotary housing (10) to a key (5) received by the key holder via the key holder (12), that the toothed ring (17) is connected to the mounting part (7) in a rotationally fixed manner via a detachable connection and that a bearing (18) is provided between the rotary housing (10) and the toothed ring (17), via which bearing the rotary housing (10) is connected to the toothed ring (17) in a rotating and axially non-displaceable manner.

2. Key operating device (6) according to claim 1, characterized in that the control unit (19) is configured to determine a current angle of rotation of the key (5) by measuring the running time of the drive motor (141) and by measuring a current supplied to the drive motor (141).

3. Key operating device (6) according to claim 2, characterized in that a current sensor (20), in particular a shunt, is provided for measuring the current supplied to the drive motor (141).

4. Key operating device (6) according to one of the preceding claims, characterized in that the control unit (19) has at least one computing unit and one memory unit and is arranged on a printed circuit board (21), wherein the printed circuit board (21) is aligned horizontally to the axis of rotation (D) of the rotary housing (10) and is arranged at an end of the rotary housing (10) facing away from the mounting part (7).

5. Key operating device (6) according to one of the preceding claims, characterized in that the key actuating device (6) has a communication interface for wireless communication, via which the key actuating device (6) can be remotely controlled, in particular by means of a remote control and / or by a mobile terminal.

6. Key operating device (6) according to one of the preceding claims, characterized in that the key actuating device (6) has a capacitive button (9) for actuating the key actuating device (6).

7. Key operating device (6) according to one of the preceding claims, characterized in that the key actuating device (6) is designed to emit optical and / or acoustic status signals.

8. Key operating device (6) according to claim 7, characterized in that the key actuating device (6) has loudspeakers for emitting acoustic status signals, which are arranged in the second half (112) of the rotating housing interior (11).

9. Key operating device (6) according to one of the preceding claims, characterized in that the key actuating device (6) has a cover cap (8) which can be pushed onto the rotating housing (10).

10. Key operating device (6) according to one of the preceding claims, characterized in that in the second half (112) of the rotary housing interior (11) a holding device (15) is provided for attaching and securing the drive arrangement (14).

11. Key operating device (6) according to one of the preceding claims, characterized in that in the second half (112) of the rotary housing interior (11) at the end of the rotary housing (10) facing the mounting part (7) a protective device (16) for the spur gear (143) of the drive arrangement (14) mounted on the drive shaft (142) is arranged.

12. Key operating device (6) according to one of the preceding claims, characterized in that the electrical energy supply (13) is designed as a rechargeable energy storage unit.

13. Key operating device (6) according to claim 12, characterized in that the key actuating device has a charging port (82) for recharging the rechargeable energy storage unit (13).

14. Use of a key actuating device (6) according to one of claims 1 to 13 for turning a key (5) in a door lock (3) of a door (1), wherein the key (5) is inserted into a locking cylinder (4) of the door lock (3), wherein the key actuating device (6) is fastened to the door (1) and / or the door lock (3) by means of a mounting part (7), wherein the key (5) inserted in the locking cylinder (4) is received by a key receptacle (12) in a rotary housing (10) of the key actuating device (6), and wherein, upon actuation of the key actuating device, the rotary housing (10) is rotated about a rotational axis (D) by a drive device (14), and a rotary movement (DB) of the rotary housing (10) is transmitted via the key receptacle (12) to the key (5) received in the key receptacle (12).

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