Electromechanical locking device

Abstract

The invention relates to an electromechanical locking device (1) for a closure element, comprising a stator (10) and a rotor (30), said rotor (30) being mounted in the stator (10). According to the invention, the locking device (1) comprises an extension element (40), wherein the extension element (40) can be moved between an insert position and a withdrawal position in the axial direction, in particular in a linear manner. The invention additionally relates to a closing device (100) comprising such a locking device (1).

Description

[0001] The invention relates to an electromechanical locking device according to the preamble of claim 1. Such a locking device essentially comprises a stator and a rotor, wherein the rotor is rotatably mounted in the stator. Furthermore, the invention relates to a locking device equipped with a locking device according to claim 14.

[0002] Locking devices are available in numerous designs, for example in the form of a locking cylinder for doors, gates, or windows. Furthermore, the invention relates to a locking system according to claim 15.

[0003] EP 1 914 368 B1 discloses a locking cylinder with a locking element which, in a first position, is located in both a rotor and a stator and thus blocks rotation of the rotor relative to the stator. In a second position of the locking element, however, the locking element is located completely in the rotor, so that the rotor can rotate relative to the stator. To move from the first position to the second position, a locking element in the rotor is rotated from a locking position to a release position. In the release position, the locking element allows the locking element to move from the first position to the second position. The locking cylinder is designed such that a conventional key must be inserted in order to ultimately transfer mechanically and geometrically engraved locking information to correspondingly assigned locking elements in the locking cylinder, thereby recognizing the locking authorization.The disadvantage is that the electromechanical locking device can only be operated with a conventional key that is elongated in one insertion direction and has to be inserted deep into the rotor.

[0004] EP 1 904 702 B1 discloses an electromechanical locking device. A blocking element embodied as a locking disc is designed to retract a locking element into the rotor, thus enabling rotation of the rotor or, if no electronic locking authorization is present, preventing retraction. A keyway extends through the locking device past the blocking element. A rotating element for mechanically resetting the blocking element projects into a keyway of the locking device. Critical here is that this sensitive part of the locking device is accessible via the keyway and thus susceptible to manipulation.

[0005] The document DE 195 24 567 C1 discloses a locking device according to the preamble of claim 1.

[0006] The object of the invention is therefore to further develop a generic locking device in such a way that the locking device has a high level of security against manipulation and thus against unauthorized unlocking of the locking device.

[0007] The object is achieved by independent claim 1. Advantageous developments of the device are specified in the dependent device claims, the description, and the figures. Furthermore, the object is also achieved by a locking device according to claim 14 and with a locking system according to claim 15.

[0008] Advantageous developments of the locking device and the locking system are indicated in the description and the figures. Features and details described in connection with the locking device according to the invention also apply in connection with the locking device and the locking system according to the invention, and vice versa. The features mentioned in the description and in the claims may be essential to the invention individually or in combination.

[0009] According to the invention, the locking device comprises an extension element, wherein the extension element is movable, in particular linearly, in the axial direction between an insertion position and a withdrawal position.

[0010] Because the locking device comprises the extension element according to the invention, the extension element can perform at least one function that a key would perform in the prior art. The extension element, as part of the locking device, remains in the locking device when a key is removed. Because a function that a key would perform in the prior art is performed by the extension element as part of the locking device, it is possible to better protect the interior of the locking device against tampering.

[0011] The locking device can comprise at least one wall, behind which the extension element is at least partially arranged. "Behind" is understood here from the perspective of the user operating the locking device. The extension element preferably moves linearly in the axial direction, thus mimicking the movement of a key. The inserted position is a position in which the extension element is farther away from the user than in the withdrawn position. For example, the extension element is arranged further behind the wall in the inserted position than in the withdrawn position.

[0012] If the extension element moves linearly, the extension element can alternatively be referred to as a slider.

[0013] It can be provided that the locking device comprises a force accumulator, in particular a spring, in order to urge the extension element into the trigger position.

[0014] The locking device is preferably used to lock a spatial area. The spatial area is in particular stationary. For example, the spatial area can be a room in a building, for example an office, an apartment or a house, or a storage room, for example a cupboard, a mailbox, a chest, a box, a safe or a drawer. In particular, the locking device is used to be inserted into a door-like locking element, for example a front door, an apartment door, a room door, a cupboard door, a mailbox flap or the front of a drawer, or to be attached to a locking element. The stator of the locking device is preferably connected at least indirectly to the locking element in a rotationally fixed manner.

[0015] The locking device may have a driver or be connectable to a driver. Rotation of the locking device's rotor serves to rotate the driver.

[0016] In the insertion position, the extension element is positioned closer to the driver than in the withdrawal position.

[0017] The driver is preferably designed as an eccentric.

[0018] The driver can be designed as a locking lug. Rotation of the driver in a first direction can serve to move the locking element from an unlocked state to a locked state. Rotation of the driver in a second direction can also serve to move the locking element from a locked to an unlocked state. For example, the locking device can be used at least indirectly in a mortise lock. In this case, rotation of the driver can cause the bolt of the mortise lock to move. For example, rotation of the driver in a first direction can cause the bolt to extend and thus bring about the locked state of the locking element. Rotation of the driver in a second direction can cause the bolt to retract and thus bring about the unlocked state of the locking element.

[0019] Alternatively, the driver itself can act as a locking latch. For example, rotating the driver in a first direction can cause the driver to assume a locked position. Rotating the driver in a second direction can cause the driver to assume an unlocked position.

[0020] In a preferred embodiment, the locking device is designed as a built-in device. The built-in device is designed to be inserted into a locking device housing of a locking device. The built-in device is preferably fastened in the locking device housing in a rotationally fixed manner by means of a fastening element. Thus, in the assembled state of the locking device, the stator of the locking device and the locking device housing form a common, fixed unit. The locking device housing serves in particular for insertion into or attachment to the locking element. The locking device can be designed, for example, as a locking cylinder, in particular as a double cylinder or half cylinder, as a knob cylinder, as a furniture cylinder, or as a padlock.

[0021] The locking device, in particular the rotor, can be connected or connectable to a knob or a key in order to transmit a mechanical torque to the rotor.

[0022] If the locking device is designed as a built-in device, it is preferably provided that the locking device comprises a connecting section in order to be connected to a driver.

[0023] Alternatively, the locking device itself can be designed as a locking cylinder, in particular as a double cylinder or half cylinder, a knob cylinder, a furniture cylinder, or a padlock. In this case, the stator also serves as a housing for insertion into or attachment to the locking element. In this case, the locking device can encompass the driver.

[0024] Alternatively, the locking device can be provided for a switching element. This allows the switching element to be operated only by authorized users. A driver of the switching element can be used to actuate a switch or push button. Thus, the locking device can be incorporated into a switching element, particularly a key switch, or can correspond to a key switch.

[0025] The locking device according to the invention comprises a locking element. In a first position, the locking element prevents the rotor from rotating relative to the stator. In a second position, the locking element enables the rotor to rotate relative to the stator. The locking element is movable between the first and second positions. The locking element can be mounted in the rotor so as to be movable, in particular linearly movable. It can be provided that the stator comprises a locking element recess into which the locking element engages in the first position. In the second position, the locking element is disengaged from the locking element recess.

[0026] According to the invention, the electromechanical locking device comprises an electromechanical actuator, in particular an electric motor. The actuator serves to enable the locking element to be moved into the second position.

[0027] The locking device may comprise an electronic control device, in particular a processor and / or a controller, to control the actuator. The control device may further comprise an electronic memory.

[0028] The locking device can comprise a transmission device. The transmission device can be designed as a transmitting and receiving unit, as a biometric sensor, as a keypad for PIN entry, and / or as a contact element for electrically contacting a key, in particular an electronic key. The transmitting and receiving unit can be designed to communicate with a mobile unit, in particular a mobile phone or a card, via wireless short-range communication, in particular RFID or Bluetooth Low Energy.

[0029] The transmission device can be used to send and / or receive electronic data that allows a user's authorization to unlock the spatial area to be determined. For example, the transmission device can receive an authorization code and / or an authorization time window, which is verified by the control device. If the verification is completed with a positive result, the actuator can be controlled to enable movement of the rotor in the stator. The actuator is controlled to enable the locking element to move into the second position.

[0030] Alternatively, the transmission device can receive an opening command, based on which the locking element is electromechanically moved into the second position or electromechanically released from movement into the second position.

[0031] The transmission device serves, in particular, additionally or alternatively, to transmit electrical energy to the locking device. The electrical energy can be provided for operating the actuator and / or for the control device. The electrical energy can be provided by an energy storage device, in particular an electrochemical one, of the key.

[0032] According to the invention, the locking device comprises a blocking element.

[0033] It is provided that the blocking element allows the movement of the blocking element from the first position to the second position in a release position and prevents the movement of the blocking element from the first position to the second position in a blocking position.

[0034] The actuator serves to enable movement of the blocking element from the blocking position to the release position. The actuator can thus move the blocking element into the release position and / or, for example, by tensioning a spring element, cause the blocking element to move into the release position. The blocking element can be arranged on the output shaft of the actuator, which is designed as an electric motor. Preferably, the actuator enables rotation of the blocking element from the blocking position to the release position.

[0035] Preferably, the actuator rotates the blocking element from the blocking position to the release position. This allows for a very space-saving design.

[0036] It can further be provided that the extension element extends in the axial direction, at least in the inserted position, along the electronic control device, along the electromechanical actuator, and / or past the locking element. The electronic control device can serve, in particular, to control the electromechanical actuator to enable the locking element to move from a first position to a second position. In this case, the actuator can move the blocking element from the blocking position to the release position. It is also conceivable for the extension element to extend in the axial direction past the blocking element.

[0037] The extension element preferably extends along the substantial length of the rotor axis of the locking device and is mounted so as to be axially movable relative to the rotor axis. The extension element is located inside the locking device where the locking mechanism is located. Thus, the control device, the actuator, the blocking element, and / or the locking element are protected from tampering, particularly by the wall.

[0038] The locking device preferably comprises a keyway for inserting a key. The wall can be arranged at the end of the keyway. The extension element can extend through the wall and be arranged partially within the keyway and partially shielded by the wall inside the locking device.

[0039] The extension element is preferably moved from the withdrawal position to the insertion position when a key is inserted and / or moved from the insertion position to the withdrawal position when a key is removed.

[0040] On the one hand, the extension element can serve to interact with an electronic key; on the other hand, the extension element can serve to interact with components of the locking device in such a way that, for example, an axial position of the extension element in or relative to the locking device determines the transition of the locking device, for example, from a released state to a locked state. Thus, in the locked state, the locking element can be in the first position, and in the released state, the locking element can be in the second position or can be moved into the second position.

[0041] The extension element thus serves as an active component for the interaction between the key and the components relevant to the locked or released state of the locking device. As a result, an electronic key can be used that is significantly shorter than a conventional key with mechanical-geometric locking information. Furthermore, the use of an extension element between the key and the active components of the locking device offers the advantage of improved tamper protection, since the active components in the locking device, such as the locking element, the blocking element, the actuator, and / or the control device, which determine the released or locked state of the locking device, can be located deeper inside the locking device.

[0042] The key is preferably designed without a mechanical coding. Accordingly, the locking device according to the invention is preferably designed without a mechanically coded locking mechanism. Thus, whether the user is authorized or not can only be determined based on an electronic locking code.

[0043] The extension element is preferably designed to establish an operative connection between the rotor and the driver for transmitting a torque from the rotor to the driver.

[0044] The locking device can, for example, comprise a coupling part or be connectable to a coupling part. If the locking device is designed as a built-in device, the locking device can, in particular, be connectable to a coupling part. If the locking device itself is designed as a locking cylinder, the locking device comprises the coupling part.

[0045] The coupling part can be moved by the extension element, so that the coupling part establishes an operative connection between the rotor and the driver. In particular, it is provided that a movement of the extension element from the withdrawal position to the insertion position causes a movement of the coupling part, which allows the coupling part to come into operative connection with the driver.

[0046] In particular, the locking device is designed to transfer the torque from the rotor to the driver without incorporating the extension element. In other words, the extension element does not serve to transfer the torque from the rotor to the driver. The torque can be transferred either directly to the driver or via the coupling part. This allows the extension element to have a delicate design. The extension element is slidably mounted in the locking device, and in this case, in particular, in the rotor.

[0047] The rotor may comprise a connecting portion, wherein the connecting portion comprises a guide for guiding the coupling part and / or for transmitting torque from the rotor to the coupling part. The connecting portion is preferably arranged outside the stator. The extension element preferably bridges at least a distance between one end of the keyway and the coupling part and / or the connecting portion.

[0048] The extension element is preferably designed to move the coupling part.

[0049] Preferably, each insertion movement of a key into a final position acts on the extension element. In particular, each insertion movement of the key into a final position acts on the extension element in such a way that the extension element is moved from the withdrawal position to the insertion position. In other words, there is no spring between the extension element and the key that, under compression, allows the key to move into the final position without moving the extension element.

[0050] The extension element can be provided to act on the coupling part without an intermediate energy storage device. While an energy storage device, in particular a spring, can be provided to urge the extension element toward the release position, the energy storage device is not designed to charge itself if the extension element and the coupling part have different movement possibilities, for example, if the coupling part cannot effectively connect with the driver due to a current spatial arrangement.

[0051] Rather, the clutch part is preferably constructed in several parts with a spring. The spring can be used to store mechanical energy when the clutch part is momentarily positioned relative to the driver in a way that prevents engagement. If the spatial arrangement of the clutch part relative to the driver allows engagement, the clutch part engages using the spring force of the clutch part's spring.

[0052] The extension element can be designed to interact with the coupling part in the axial direction without a positive fit. This allows the extension element to move into the withdrawal position without directly moving the coupling part. However, it can be provided that the coupling part follows the extension element at least partially in a spring-driven manner.

[0053] The extension element can be designed to interact with the coupling part in the direction of rotation without a positive fit. This makes it possible, in particular, to transmit the torque to the coupling part without the involvement of the extension element.

[0054] The extension element can be designed to interact with the coupling part without a positive fit. In particular, the extension element pushes the coupling part toward the driver without forming a connection with the coupling part.

[0055] The extension element can be designed so that the operative connection between the coupling part and the driver can only be effectively released in the retracted position. Effective release means a release in which the coupling part does not come into operative connection with the driver due to spring force when the rotor rotates. When the extension element is in the inserted position, the coupling part is preferably in operative connection with the driver or can come into operative connection due to the force of the spring when the rotor rotates.

[0056] It can be provided that the extension element allows the operative connection of a coupling part with the driver to be released in the release position. In the release position, the extension element only allows the operative connection of a coupling part with the driver to be effectively released. Thus, the extension element does not actively move the coupling part out of the operative connection with the driver, but merely creates a precondition for the coupling part to be released from the operative connection with the driver.

[0057] Additionally or alternatively, it can be provided that the extension element leaves the coupling part, in particular a coupling element of the coupling part, in connection with the driver during a movement of the extension element from the insertion position to the withdrawal position.

[0058] The coupling element can establish the operative connection between the rotor and the driver. The coupling element can, in particular, be guided in the rotor's guide. Preferably, the coupling element remains in the coupling position, i.e., in operative connection with the driver, when the extension element moves into the withdrawal position. Thus, the coupling element ensures that the coupling position is maintained.

[0059] Preferably, the extension element is movable independently of the coupling element.

[0060] The extension element preferably comprises an engagement element for engaging the key. This makes it possible for the extension element to always be moved from the inserted position to the withdrawn position when the key is removed. This ensures that the extension element is always in the withdrawn position when the key is removed. Thus, the engagement element is designed to be operatively connected to the key in such a way that the extension element can be moved, in particular pulled, from the inserted position to the withdrawn position when the key is removed.

[0061] It can be provided that the extension element is usually moved into the withdrawal position by means of the energy storage device. The extension element can be pulled by the engagement of the engagement element in the key if the energy storage device is unable to move the extension element into the withdrawal position due to manipulation.

[0062] The engagement element is preferably designed to be resilient. Thus, the locking device preferably comprises the key channel for inserting a key, with the extension element comprising a resilient engagement element for engaging the key.

[0063] Preferably, the engagement element is designed to be operatively connected to the key under mechanical tension such that, when the key is removed, the extension element is moved, and in particular pulled, from the inserted position to the withdrawn position. Thus, the resilient effect urges the engagement element to disengage from the key.

[0064] The locking device, in particular the stator, advantageously comprises a contact surface for the extension element, wherein the engagement element's contact with the contact surface, in particular under tension, creates the operative connection with the key. The locking device, in particular the rotor, preferably comprises a cavity in which the engagement element is released from operative connection with the key.

[0065] The extension element can be guided linearly in a guide of the rotor.

[0066] Preferably, the guide is designed as an open recess in the rotor, so that the recess is closed off by the stator. For example, the stator can therefore encompass the contact surface that presses the engagement element into engagement with the key.

[0067] The guide preferably opens into a cavity. The cavity preferably merges into the keyway. The contact surface forces the engagement element into engagement with the key, particularly counteracting the spring action. However, in the cavity, which has a larger diameter than the guide, there is sufficient space for the engagement element to disengage from the key, particularly due to the spring action.

[0068] The engagement element is released from the operative connection with the key, particularly due to the spring effect.

[0069] The engagement element may comprise a sliding surface, wherein the engagement element is designed such that the sliding surface slides along a corresponding sliding surface of the key and thus the engagement element is released from the operative connection with the key.

[0070] It can be provided that the engagement element disengages from the key due to the resilient action and / or the sliding surface. Preferably, both the resilient action and the sliding surface contribute to the engagement element disengaging from the key. The extension element further comprises an engagement surface for contact with the key, so that the extension element can be moved, in particular pushed, by the key from the withdrawal position to the insertion position.

[0071] The extension element is in particular designed in one piece and / or angled, wherein in particular a section of the extension element which is arranged near the rotor axis serves to move the coupling part.

[0072] To create the resilient action of the engagement element, the engagement element comprises a resilient portion through which the engagement element is connected to the rest of the extension element. For example, the resilient portion can be designed as a leaf spring.

[0073] The leaf spring may be provided with a spring head of the engagement element. The spring head may encompass the sliding surface.

[0074] It can be provided that the engagement element, in particular the spring head, comprises a bevel. By means of the bevel, the key can deflect the engagement element during insertion, in particular under tension of the resilient portion. The deflection causes, in particular, the key and the engagement element to slide over each other, so that the spring head can engage in a recess in the key.

[0075] According to the invention, the locking device comprises the blocking element, wherein the blocking position and the release position can be assumed by the blocking element. The extension element and the blocking element are preferably designed such that the extension element, in the inserted position, prevents, in particular blocks, a movement of the blocking element from the release position to a blocking position.

[0076] The blocking element preferably has a retaining cam. The retaining cam is arranged, in particular, eccentrically on the remaining blocking element. In particular, the blocking element, with the retaining cam in the release position, rests against the extension element in the inserted position. For this purpose, the extension element can have a stop.

[0077] As a result, the extension element blocks the movement, in particular the rotation, of the blocking element from the release position.

[0078] This ensures in particular that the release position of the blocking element can only be assumed when the key is actually inserted and the extension element is arranged in the insertion position.

[0079] The retaining cam can be formed in one piece, in particular monolithically, with the rest of the blocking element.

[0080] A home position is defined as a blocking position of the blocking element in which the blocking element is located when the locking device is not actuated. In this case, the key is, in particular, removed. The extension element and the blocking element are preferably designed such that the extension element, in the inserted position, blocks movement of the blocking element from the release position to the home position.

[0081] For example, a spring element can be provided that engages the blocking element. The spring element can be tensioned in the release position of the blocking element and push the blocking element into a blocking position, in particular into the starting position. In the inserted position, the extension element prevents the blocking element from being moved from the release position to a blocking position by the force of the spring element.

[0082] The spring element can, for example, be designed as a torsion spring.

[0083] The extension element can have the stop, while the blocking element has a retaining cam formed on it, which is held against the stop by the spring element when the blocking element is in the release position and the extension element is in the insertion position. In the insertion position, the retaining cam can come into contact with the stop.

[0084] According to the invention, the extension element and the blocking element are designed such that the extension element, in the withdrawal position, releases a movement of the blocking element from the release position into a blocking position, in particular into the starting position. In particular, the extension element is not operatively connected to the blocking element in the withdrawal position, so that a movement of the blocking element from the release position into the blocking position occurs due to the force of the spring element. In the withdrawal position, in particular, the stop of the extension element is spaced apart from the retaining cam of the blocking element. Thus, the retaining cam can no longer bear against the stop. In the withdrawal position of the extension element, the retaining cam can preferably rotate freely, so that the blocking element cannot be held by the stop, and the blocking element cannot maintain the release position.

[0085] If the key is removed and the extension element moves from the inserted position back into the withdrawn position, the extension element is disengaged from the blocking element so that the blocking element is moved from the release position back into the blocking starting position, in particular by the spring element, in which the blocking element is again held in the first position.

[0086] The locking device comprises the blocking element, wherein in particular the starting position and the release position can be assumed by the blocking element by rotating the blocking element.

[0087] For example, the blocking element can be disc-shaped.

[0088] The extension element and the blocking element can be designed such that in the inserted position of the extension element, a movement of the blocking element from the starting position to the release position is blocked in at least one direction of rotation.

[0089] The extension element and the blocking element can be configured such that, when the extension element is inserted, the blocking element can move from the starting position to the release position in a first rotational direction and is blocked in a second rotational direction. In particular, a rotational angle between the starting position and the release position in the first rotational direction can be greater than a rotational angle between the starting position and the release position in the second rotational direction. This prevents manipulation by unauthorized rotation of the blocking element.

[0090] Preferably, the restoring force of the spring element is temporarily stronger during a rotation in the second direction of rotation than at least during a rotation in the first direction of rotation.

[0091] The actuator preferably rotates the blocking element in the first direction of rotation so that the blocking element moves from the starting position to the release position.

[0092] The spring element preferably rotates the blocking element in the first direction of rotation from the release position to the starting position.

[0093] A further advantage is achieved in that the rotational movement of the blocking element from the starting position to the release position and from the release position back to the starting position of the blocking element takes place in the same direction of rotation, namely in the first direction of rotation.

[0094] The rotor has a first rotor section and a second rotor section, the first rotor section having a larger diameter than the second rotor section, and the extension element extends over the first and second rotor sections or is arranged longitudinally movable therein. The cavity in which the engagement element is disengaged from the key is preferably located in the first rotor section.

[0095] For example, the first rotor section may correspond to a first rotor element. The second rotor section may correspond to a second rotor element. The first and second rotor elements are rigidly connected to one another.

[0096] It may be that the contact surface against which the engagement element rests is located in the area of ​​the second rotor section.

[0097] The locking device preferably comprises the transmission device for transmitting data and / or electrical energy from a key to the locking device, wherein the transmission of data and / or electrical energy is interrupted when the key is removed.

[0098] The extension element preferably engages the key in a form-fitting manner, so that when the key is removed, the extension element always moves from the inserted position to the withdrawn position. This ensures that the blocking element mechanically returns to a blocking position, particularly due to the force of the spring element, and that rotation of the rotor is prevented by the locking element.

[0099] Furthermore, according to the invention, a locking device is provided, wherein the locking device is designed with a locking device as shown above and with a coupling part, wherein the coupling part is designed in several parts, wherein a first part of the coupling part is designed to be moved by the extension element when the extension element moves from the withdrawal position into the insertion position, wherein a second part of the coupling part is provided to be connected to the driver in a rotationally fixed manner, wherein the first part and the second part are connected elastically, in particular via a spring. This makes it possible in particular to design the extension element in one piece and / or in a filigree manner. The first part can in particular be designed as a sliding element and the second part as a coupling element.

[0100] The locking device may comprise a locking device housing in which the locking device is accommodated. Thus, the locking device may be designed as a built-in device.

[0101] The extension element according to the invention is particularly suitable for use in the compact installation device due to its one-piece design and / or its filigree construction.

[0102] The object of the invention is also achieved by a locking system with a locking device and / or a locking device and a key. In particular, the key comprises a recess into which the extension element, in particular the engagement element, can engage. The key can comprise the corresponding sliding surface for interacting with the sliding surface of the engagement element. The key can comprise a bevel for interacting with the bevel of the engagement element. Preferred embodiment of the invention

[0103] The invention is explained in more detail below using an exemplary embodiment. Technical features with the same function are provided with identical reference numerals in the figures. They show: Fig. 1 a locking device according to the invention and a key, which together form a locking system according to the invention, Fig. 2 the locking device from Figure 1 in the partially disassembled state, with a perspective view of a locking device according to the invention, which is designed as an installation device, Fig. 3 the locking device according to the invention from Figure 2 without cover and a coupling part, Fig. 4 the locking device from Figure 3 without cover and stator body in an exploded view showing the extension element according to the invention, Fig. 5 selected elements of the locking device from Figure 4 , Fig. 6 selected elements of the locking device Figure 4in a side view, Fig. 7 a sectional view through the locking device with the representation of the extension element according to the invention and Fig. 8 a detailed representation of the extension element arranged next to the electromechanical actuator assembly, Fig. 9 a detailed representation of the extension element, Figure 10 a representation of a coupling part of the locking device from Figure 1 and an alternative coupling part for use in the locking device of the Figure 1 , Figure 11 shows a representation of selected elements of the locking device 1 according to the invention from Figure 2 and Figure 12 shows a key of a locking system according to the invention.

[0104] Fig. 1 and Fig. 2show a locking device 100 in the form of a locking cylinder, such as those used in mortise locks, for unlocking a building door as a locking element or locking it by means of a bolt. For this purpose, the locking device 100 comprises a housing 101 with a recess in which a driver 103, designed as a locking lug, is rotatably arranged. The driver 103 serves to move a bolt in the locking or unlocking direction.

[0105] In the right half of the housing 101, here shown, a locking device 1 designed as an installation device according to an exemplary embodiment of the invention is inserted. The installation device 1 comprises a stator 10 arranged on the outer circumference, in which a rotor 30 of the installation device 1 is inserted so as to be rotatable about a rotor axis 35, which, for example, coincides with the rotation axis of the driver 103. The rotor 30 comprises, on its front side 37 facing away from the driver 103, a key channel 36 for inserting a shaft of a key 200. The key 200 and the locking device 100 together form a locking system 300 according to the invention.

[0106] The key 200 carries an electronic locking secret in the form of electronic data. Based on the locking secret, the user's authorization to unlock the door can be determined. The key 200 is preferably designed without mechanical coding. Thus, whether the user has authorization or not can be determined solely based on the electronic locking secret. The keys and locking devices can be identical in external form and thus also mechanically.

[0107] Fig. 2shows the locking device 100 in a partially disassembled state. The housing 101 has, for example, in both halves of the recess for the driver 103, recesses 104 in the lower area, of which the right-hand recess is provided with a reference numeral. The recesses 104 shown here extend perpendicular to the axis of rotation of the driver 103. The driver 103 has, for example, an inner contour that is non-circular in cross-section, for example in the form of internal teeth, into which an insert 105 preferably engages in a form-fitting manner. For this purpose, the insert 105 has an outer contour complementary to the inner contour of the driver 103, here in the form of external teeth, so that both parts 103, 105 are arranged in a rotationally fixed manner relative to one another.

[0108] A connecting section 38 of the installation device 1 projects into the insert 105. In the connecting section 38, a coupling part 41 is slidably arranged in a guide 42. The coupling part 41 is designed in several parts and, depending on the position of the coupling part 41, can establish or release an operative connection between the rotor 30 and the driver 103, in particular via the insert 105. For this purpose, the coupling part 41 of the locking device 100 can engage in a form-fitting manner in an inner contour (not shown) of the insert 105. In this case, the coupling part 41 is in a coupling position. The guide 42 preferably forms a linear guide for the coupling part 41, such that the coupling part 41 is arranged so as to be guided and movable along the rotor axis 35 of the rotor 30. The coupling part 41 is movable such that the coupling part 41 can be disengaged from the insert 105.Here, the coupling part 41 is in a decoupling position, as in . Figure 3 shown.

[0109] The installation device 1 has a casing 14, with which the installation device 1 is inserted into a corresponding insertion opening 106 of the housing 101. A fastening element 102 in the form of a screw is screwed through the recess 104 (here on the right) from the underside of the housing 101 and through a through-opening 21 (here on the left) of the casing 14 of the stator 10 into a screw opening of a stator body 11 of the stator 10, which will be explained in more detail later. The screw 102 thus fixes the stator 10 in the housing 101. Furthermore, the key channel 36 for inserting the key 200, which is formed in a first rotor element 32 of the rotor 30, is designated here.

[0110] Fig. 3shows the installation device 1 without the casing 14. The stator body 11 is also designed as a type of sleeve and has functional structures on its inside. The stator body 11 has a recess 19 into which a stator insert element 13 is inserted. Stator elements 12, explained in more detail later, are attached or arranged on a side of the stator insert element 13 facing the interior of the stator body 11. The stator elements 12 are movably mounted on the stator insert element 13 and the stator body 11. The stator elements 12 remain in the rest of the stator 10 during rotation of the rotor 30.

[0111] The rotor 30 comprises the first rotor element 32, which also forms a first rotor section, and a second rotor element 33, which also forms a second rotor section.

[0112] The rotor 30 is rotatably mounted in the stator body 11 of the stator 10, but is fixedly mounted in the direction of its rotor axis 35, which runs parallel to the insertion direction of the key 200 into the keyway 36. The coupling part 41 is arranged in a rotationally fixed manner on the second rotor element 33 of the rotor 30 of the installation device 1. Both rotor elements 32, 33 are reversibly detachable and rigidly attached to one another and are arranged so as to rotate together in the stator body 11.

[0113] The second rotor element 33 has the guide 42, into which the coupling part 41 engages and is thus arranged in a rotationally fixed manner with respect to the second rotor element 33. The second rotor element 33 is inserted into the stator body 11 from a base side 23 of the stator 10, preferably without the first rotor element 32 during assembly.

[0114] Fig. 4shows the installation device 1 without the casing 14, stator body 11, and coupling part 41 in a partially disassembled state. Shown is an extension element 40 according to the invention, which is designed to interact mechanically with the key 200. When the key 200 is inserted into the keyway 36, the key 200 moves the extension element 40 axially or parallel to the rotor axis 35 in the direction of the second rotor element 33 upon contact, as indicated by the arrow 95 on the extension element 40. The extension element 40 can be moved linearly between a withdrawal position and an insertion position. When the key 200 is inserted, the extension element 40 assumes the insertion position, in which the extension element 40 is displaced in the direction of the driver 103 compared to the withdrawal position. When the key 200 is removed, the extension element 40 assumes the withdrawal position, as shown in Figure 7 and 8 shown.

[0115] Because the extension element 40 according to the invention is provided, the key channel 36 can have a small depth (see Fig. 7 ). This ensures that components that allow rotation of the driver 103 only for authorized users are particularly well protected. These components are described below, particularly with regard to the Figures 5 and 6 , described.

[0116] As in Figure 7 As shown, the keyway 36 ends with a wall 36a. As shown in Figure 7As shown, only a portion of the extension element 40, which is designed to interact with the key 200, protrudes into the keyway 36. The wall 36a is essentially closed except for a section necessary for the extension element 40 to protrude into the keyway. Because the extension element 40 is designed to be delicate, at least with the portion of the extension element 40 that protrudes into the keyway 36, the wall 36a can close off the keyway 36 and protect the components located behind it. The keyway 36 can be designed to be correspondingly short.

[0117] The extension element 40 thus extends the range of action of the key 200.

[0118] The rotor 30, for example the second rotor element 33, comprises a guide 65 to axially guide the extension element 40 between the withdrawal position and the insertion position. For this purpose, the guide 65 comprises rails 65a. The rails 65a cooperate with corresponding guide means 40a of the extension element 40, which are arranged in Figures 8 and 9 are shown.

[0119] The guide 65 is designed as an open recess, with a contact surface 75 of the stator 10 defining the recess (see Figure 7 ). This allows the locking device 1 to be designed compactly.

[0120] In order to push the extension element 40 from the withdrawal position into the insertion position, the key engages an engagement surface 85 of the extension element 40 and moves the extension element 40 (see Figures 8 and 9 ). The extension element 40 moves the coupling part 41 (see Fig. 2) away from the rotor 30 in the direction of the driver 103, so that the coupling part 41 can come into rotational engagement with the driver 103.

[0121] A passage 39 is provided in the connecting portion 38 to allow the extension element 40 to reach the coupling part 41. Either the extension element 40 or the coupling part 41 can extend through the passage 39.

[0122] A rotation of the key is transmitted via the first rotor element 32 to the second rotor element 33 and thus to the connecting section 38. The torque is transmitted from the connecting section 38 to the coupling part 41 and from there to the driver 103, provided the coupling part 41 is in the coupling position. The extension element 40 is not required to transmit the torque from the key 200 to the driver 103. This allows the extension element 40 to have a delicate design.

[0123] In Figure 10Several alternatives of a coupling part 41 of the locking device 100 according to the invention are shown. The coupling part 41 shown on the left corresponds to the coupling part 41 shown in the Figure 2 and 3 The coupling part 41 shown on the right can be used as an alternative to the coupling part 41 shown on the left without changing the locking device 1 according to the invention. Both coupling parts can be used with a locking device 1 according to the first or second embodiment.

[0124] First, common features of both coupling parts 41 are described. As in Figure 10 As shown, the coupling part 41 is constructed in several parts. The coupling part 41 comprises a sliding element 91 as the first part, a coupling element 92 as a second part, and a spring 93. The sliding element 91 is guided in a channel 38a of the connecting section 38.

[0125] The sliding element 91 is displaced by the extension element 40 when the extension element 40 moves from the withdrawal position to the insertion position. The coupling element 92 is provided to be guided in the guide 42 and to be operatively connected to the driver 103 in the coupling position. If the sliding element 91 is displaced when the key 200 is inserted and the insert 105 and the coupling element 92 are in a geometrically matching spatial position relative to one another, the coupling element 92 is also displaced via the spring 93, so that the coupling element 92 moves into the coupling position, i.e., into engagement with the insert 105 and thus into operative connection with the driver 103.If the sliding element 91 is displaced when the key 200 is inserted and the insert 105 and the coupling element 92 are in a geometrically non-matching spatial position relative to one another, the spring 93 is tensioned and the coupling element 92 initially remains in the uncoupling position until the insert 105 and the coupling element 92 can assume a geometrically matching spatial position relative to one another and the coupling element 92 reaches the coupling position due to the force of the spring 93.

[0126] To allow for a small installation space for the locking device 1, the key 200 pushes the extension element 40 into the insertion position without an intermediate energy storage device. The extension element 40 pushes the coupling part 41 without an intermediate energy storage device. Instead, the energy storage device in the form of the spring 93 is provided outside an interior space of the locking device 1 in the connecting section 38.

[0127] The extension element 40 is designed to push the coupling part 41, but without being in positive engagement with the coupling part 41 (see Figures 8 and 9 ). For this purpose, the extension element includes a section 86.

[0128] In the coupling part 41 shown on the left, the coupling element 92 initially remains in the coupling position when the key is removed. However, in the withdrawal position, the extension element 40 allows the coupling element 92 to move into the uncoupling position. As a result, the driver 103 is connected to the stator 10 via the coupling element 92, the second rotor element 33, and the locking element 31, so that the driver 103 cannot rotate when the key is removed. This provides good protection against manipulation.

[0129] A movement of the coupling element 92 into the uncoupling position can occur, for example, by pressure on a further sliding element 94. The sliding element 94 can, for example, be part of another locking device on the other side of the door. When a key is inserted into the further locking device, the sliding element 94 is displaced. As a result, a further coupling element 97 is pushed into a coupling position with the driver 103, either directly or via tensioning a further spring 96. At least when the key of the locking device 100 according to the invention is removed, the coupling element 92 is displaced from the coupling position into the uncoupling position.

[0130] The Figure 10The right-hand coupling part 41 shown is used, for example, when a knob is used on the other side of the door. The knob is firmly connected to the driver 103. If the key 200 is removed from the locking device 100 according to the invention and the extension element 40 is moved into the withdrawal position, the force of the spring 96 pushes the coupling element 92 into the uncoupling position. The engagement surface 85 of the extension element and the section 86 of the extension element are preferably rigidly connected to one another.

[0131] This allows the extension element to be designed in a delicate manner.

[0132] The extension element 40 is further connected to the Figures 7 to 9 described in more detail later.

[0133] A transmission element 44, here in the form of contact elements, for example, is spring-mounted on a housing 46 to establish a data and / or energy transmission connection with the key 200. This makes it possible to read electronic data, such as authentication information or an opening command, from the key 200 or to receive it from the key 200. An electronic control device 53 of the locking device 1, in the form of a control board, is coupled to the transmission element 44 to read the data and, if necessary, evaluate it. If the check by the control device 53 reveals that the user of the key 200 is authorized to open the associated door and / or if the control device 53 has an opening command, an electromechanical actuator assembly 50 is activated.

[0134] The locking device 1 also receives electrical energy from a battery of the key 200.

[0135] The actuator assembly 50 comprises an electromechanical actuator 52, here in the form of an electric motor, on whose output shaft a blocking element 51 is arranged in a rotationally fixed manner.

[0136] The actuator assembly 50 with the electromechanical actuator 52 in the form of the electric motor and with the blocking element 51 on its output shaft has a spring element 80. The spring element 80 interacts with the blocking element 51 in such a way that upon a movement of the blocking element 51 from the starting position to the release position, thus a rotation of the blocking element 51, the spring element 80 is at least temporarily tensioned in such a way that the spring element 80 pushes the blocking element 51 back towards the starting position, thus rotating it back into a specific rotational position. A more detailed description of the interaction of the spring element 80 with the blocking element 51 follows in connection with Figure 5 .

[0137] It is also planned, as further discussed in conjunction with Figure 5shown, a locking element 31 of the locking device 1, which is mounted in the second rotor element 33 so as to be linearly movable towards and away from the blocking element 51, preferably perpendicular to the rotor axis 35. In the first position shown here, the locking element 31 is located in a locking element recess 15 which is formed by the stator insert element 13 and the stator elements 12. This prevents the second rotor element 33 and thus the coupling part 41 from being rotated. The turning of the inserted key 200 to unlock the associated lock is thus prevented. In a second position of the locking element 31, not shown, it comes out of engagement with the locking element recess 15 of the stator 10. This makes it possible to rotate the rotor 30 in the stator 10 and thus the driver 103 in order to actuate the locking device and release the locking mechanism.

[0138] The Figures 5 and 6show selected elements of the locking device 1 from Fig. 4 . This shows Fig. 5 the arrangement of the locking element 31 in relation to the blocking element 51 and the stator insert element 13 together with stator elements 12. The blocking element 51 is rotatable between a release position, in which a recess 54 of the blocking element 51 is opposite the locking element 31, so that the locking element 31 can move into the recess 54 and assume the second position, and a blocking position, in which the recess 54 is not opposite the locking element 31, so that the locking element 31 is prevented from moving into the recess 54. In the Figures 4 and 5 Blocking positions of the blocking element 51 are shown. The blocking position that the blocking element 51 holds in the unactuated locking device 1 is referred to as the initial position.

[0139] The locking element 31 is designed at its contact section 63 facing the blocking element 51 to be able to move into the recess 54 when the blocking element 51 is in the release position and the recess 54 is opposite the contact section 63 of the locking element 31, in Figure 5 i.e., points upwards. This allows the locking element 31 to move into the second position. In the blocking positions of the blocking element 51, however, the locking element 31 must remain in the first position.

[0140] A first contact surface 16 of the stator elements 12, facing the locking element 31, is designed to urge the locking element 31 toward the blocking element 51, i.e., into the second position, as the rotor 30 continues to rotate, in which position the rotor 30 is freely rotatable relative to the stator 10. The first contact surface 16 is designed as an inclined surface that urges the locking element 31 into the second position.

[0141] The stator elements 12 are movably mounted on the stator insert element 13 between a first position and a second position. The stator elements 12 are urged into the first position by means of spring elements 18. The spring elements 18 are mounted in the stator 10. The movement of the stator elements 12 from the first position to the second position according to the direction of movement 71 is perpendicular to the direction of movement 70 of the locking element 31.

[0142] During a process for unlocking the rotor 30 relative to the stator 10, the locking element 31 is initially located in the locking element recess 15. The locking element 31 is guided in the rotor 30. In addition, the locking element 31 rests against the first contact surfaces 16 of the stator elements 12. This centers the locking element 31. This position of the locking element 31 is referred to as the rest position. In the rest position, the locking element 31 is preferably arranged at a distance from the blocking element 51.

[0143] A user now wishes to unlock the door and inserts the key 200 into the key channel 36. This initiates electronic communication between the key and the control device 53, which electronically determines whether the user is authorized.

[0144] If the user is authorized to unlock the door, the control device 53 controls the actuator 52. The actuator 52, designed as an electric motor, rotates the blocking element 51 into the release position, in which the recess 54 is opposite the locking element 31. If the rotor 30 is then set in rotation by means of the key 200, the locking element 31 slides along one of the first contact surfaces 16 into the second position, in which the locking element 31 engages the recess 54, wherein the locking element 31 is preloaded into the locking element recess 15 by springs (not shown). The locking element 31 then moves in the direction of movement 70 due to the rotation of the rotor 30.

[0145] The stator elements 12 remain in the first position. This is made possible by the fact that the spring elements 18 exert a greater force on the stator element 12, along which the locking element 31 slides, than the springs (not shown) that push the locking element 31 upward into the locking element recess 15.

[0146] The rotor 30 is now freely rotatable. The locking element 31 slides along the first contact surface 16 toward which it is rotated. The locking element 31 is surrounded by the first contact surfaces 16 in both directions of rotation, so that rotation in both directions upon contact with one of the first contact surfaces 16 causes the locking element 31 to move into the second position. To ensure that first contact surfaces 16 are present in both directions of rotation, the locking element recess 15 is surrounded on both sides by at least one first stator element 12 and one second stator element 12.

[0147] The stator 10 has, as in Figure 6 As shown, the locking element 31 has second contact surfaces 17, which leave the locking element 31 in the first position. The second contact surfaces 17 are functionally used when the user is not authorized to unlock the door. The second contact surfaces are formed in or on the stator insert element 13. When the locking element 31 is in the rest position, the second contact surfaces 17 are spaced further away from the locking element 31 than the first contact surfaces 16.

[0148] Preferably, the second contact surfaces 17 are also inclined, but opposite to the first contact surfaces 16 with respect to the direction of movement 70 of the locking element 31. The second contact surfaces 17 thus form an obtuse angle to the direction of movement 70 of the locking element 31.

[0149] At its end facing the stator insert element 13, the locking element 31, viewed along the rotational axis of the blocking element 51 and / or the rotor axis 35, has a cross-section in the shape of a symmetrical trapezoid tapering toward the blocking element 51. The legs of this trapezoid form head surfaces 60 outwardly with respect to the locking element 31. The head surface 60 and the corresponding contact surface 17 are inclined relative to the direction of movement of the locking element 31.

[0150] If the user is not authorized to unlock the door, the following sequence occurs. The locking element 31 is initially in the rest position. A key 200 without locking authorization is inserted into the keyway 36. The electronic data exchange indicates that there is no authorization to unlock the door. Therefore, the actuator 52 is not activated, and the blocking element 51 remains in a blocking position in which the recess 54 is not opposite the locking element 31, as shown in Figure 4 and 5 Rather, an outer periphery of the blocking element 51 lies opposite the locking element 31.

[0151] When the rotor 30 is rotated, the locking element 31 attempts to slide along the first contact surface 16. However, this is unsuccessful because the locking element 31 rests on an outer circumference of the blocking element 31. Thus, the locking element 31 cannot be forced into the second position against the force of the springs (not shown).

[0152] Instead, the stator element 12, which is located in the direction of rotation of the locking element 31, is pushed back by the locking element 31 against the force of the spring 18 until the locking element 31 rests against the second contact surface 17. The stator element 12 is now in the second position. The head surface 60 of the locking element 31 comes into contact with the corresponding second contact surface 17, which is opposite one of the legs of the trapezoid. If an attempt is made to forcefully rotate the rotor 30 using the key 200, the arrangement shown does not generate a greater force from the locking element 31 to the blocking element 51.

[0153] The contact surface 17 is designed such that the contact surface 17 holds the locking element 31 in the first position. Thus, the rotor 30 remains blocked by the locking element 31, preventing the door from unlocking.

[0154] Each of the contact surfaces 17 corresponds to a respective side of the facing head surface 60 of the locking element 31. The surface 60 and the respectively corresponding contact surface 17 are designed such that the contact surface 17 is located between the surface 60 and the blocking element 51 when the locking element 31 rests against the contact surface 17.

[0155] If an attempt is made to rotate the rotor 30 further, the locking element 31 slides away from the blocking element 51 in the opposite direction of movement 70. This is achieved by the slope of the second contact surface 17. The locking element 31 can slide along the second contact surface 17 with the head surface 60. Thus, the locking element 31 and the blocking element 51 can be spaced apart from one another when in contact with the second contact surface 17. Additionally or alternatively, the forces acting on the locking element 31 during a further attempted rotation of the rotor 30 are diverted to the second contact surface 17. This is achieved by the fact that the head surfaces 60 correspond to the second contact surfaces and thus the locking element 31 rests flat against the second contact surface.

[0156] This prevents damage to the blocking element 51, and it does not absorb the forces that arise when an attempt is made to forcefully rotate the rotor 30 in the stator 10. In particular, this makes it possible to design the blocking element 51 with a delicate design and, for example, to mount it only on one side or to mount it on a thin shaft of the electromechanical actuator 52, which is designed as a motor.

[0157] The locking element recess is provided with the reference number 15. Fig. 6 shows the arrangement of Fig. 5 viewed from one end face of the locking element 31, only without the blocking element 51. Here, the stator elements 12 are in the second position. The same reference numerals in Figure 6 are valid through the description of the Figure 5 than in Figure 6 described with.

[0158] Furthermore, with regard to Figure 5the spring element 80 is shown enclosing the blocking element 51 and the electromagnetic actuator 52. The spring element 80 is rigidly clamped on the rear side by its end section there in a manner not shown, and the spring element 80, as a torsion spring, has a torsion leg 80a that transitions into a contact leg 80b angled approximately 90° therefrom, which is preloaded against a pin 51b on the blocking element 51. The preload of the contact leg 80b against the pin 51b is achieved via the torsion of the torsion leg 80a such that the blocking element 51 is rotationally preloaded into the starting position shown here, in which the blocking element 51 prevents movement of the locking element 31 and the rotor 30 cannot rotate in the stator 10. In this position, the recess 54 is not aligned with the locking element 31.

[0159] If the electromechanical actuator 52 is energized, the blocking element 51 is rotated counterclockwise according to the arrow 81 in the view shown here, so that this rotation changes the preload in the torsion leg 80a of the spring element 80 and finally decreases again after passing through a dead center. Through this rotation of the blocking element 51, the recess 54 can be rotated into the corresponding release position with the blocking element 31. In order to lock the position of the recess 54 corresponding to the blocking element 31, a stop 83 of the extension element is provided, which in conjunction with Figure 7 is explained in more detail and against which a retaining cam 51a of the blocking element 51 can come into contact.

[0160] If the blocking element 51 is rotated into the release position, the retaining cam 51a can come into contact with the stop 83 when the extension element 40 is in the inserted position. This holds the blocking element 51 in the release position.

[0161] The spring element 80 pushes the blocking element 51 toward the release position after passing the dead center. In the release position, the spring element 80 presses the blocking element 51 against the stop 83 of the extension element 40.

[0162] If the extension element 40 is moved back into the trigger position against the direction of movement 95, the stop 83 disengages from the retaining cam 51a.

[0163] The blocking element 51 then rotates back to its original position, with the return rotation occurring by applying force to the spring element 80. The rotation also occurs counterclockwise according to arrow 81. Thus, in the trigger position, the extension element 40 allows the blocking element 51 to move back to its original position by means of the spring element 40.

[0164] Without manipulation, the blocking element 51 therefore always rotates counterclockwise 81. However, through manipulation, the blocking element 51 can also be rotated clockwise 82, since the blocking element 51 is arranged on the output shaft of the actuator 52. The movement of the blocking element 51 from the starting position to the release position in the direction of rotation 82 is made more difficult, on the one hand, by a sharp increase in the spring tension 80. On the other hand, the movement of the blocking element 51 from the starting position to the release position in the direction of rotation 82 is prevented when the extension element is in the inserted position.

[0165] In the inserted position, the extension element 40, in particular the stop 83, prevents the blocking element 51 from reaching the release position in the second direction of rotation. Rather, before reaching the release position, the retaining cam 51a would be brought into contact with a Figure 8area 83a of the stop 83 shown below. The first direction of rotation, however, is particularly protected against manipulation due to the longer angle of rotation range for reaching the release position.

[0166] The blocking element 51 can be movable from the starting position in a first direction, in particular a first direction of rotation 81, and in a second direction, in particular in a second direction of rotation 82, wherein the spring element 80 and the blocking element 51 interact in such a way that the spring element 80 is at least temporarily tensioned both during a movement in the first direction and during a movement in the second direction.

[0167] As from the Figure 11 , from the Figure 7 and from a summary of the Figure 11 and the Figure 7As can be seen, the extension element 40 extends past the blocking element 51, the locking element 31, the control device 53, and the actuator 52. Thus, the components that enable an authorized user to rotate the rotor 30 are arranged radially adjacent to the extension element 40. The blocking element 51, the locking element 31, the control device 53, and the actuator 52 are protected behind the wall 36a.

[0168] In Figure 7 shows a sectional view through the locking device 1, wherein the stator 10 is shown with the stator body 11, and in the stator body 11, the first rotor element 32 and the second rotor element 33 are shown. The first rotor element 32 has the key channel 36, into which the Figure 1 shown key 200 can be used. The second rotor element 33 merges into the connecting section 38, which is already in connection with Figure 2The sectional view is selected such that the extension element 40 is shown within the stator body 11, and at the same time, the second rotor element 33 is shown in cross-section. The extension element 40 extends off-center through the stator body 11, so that the extension element 40 is at a radial distance from the central rotor axis 35.

[0169] A housing 46 serves to axially fasten the rotor elements 32, 33 to one another. For this purpose, the housing 46 comprises a locking element 48, which engages with the second rotor element 33. For this purpose, the second rotor element 33 comprises a groove 77. In addition, the housing 46 comprises a first locking element 47, which engages with the first rotor element 32. For this purpose, the first rotor element 32 comprises an edge 78. The housing 46 is connected to the transmission device 44 (see Fig. 4 ). The housing 46 includes the wall 36a.

[0170] The second rotor element 33 has a projection 43, wherein the projection 43 is formed integrally with the remaining second rotor element 33, wherein the axial position relative to the stator 10 in a spatial direction is determined by the projection 43 in that the projection 43 bears against a base side 23 of the stator 10 or the stator body 11.

[0171] The first rotor element 32 is axially fixed by a snap ring 72, both in the direction of arrow 79 and opposite to the direction of arrow 79. The snap ring 72 is arranged in a groove 73 of the first rotor element 33.

[0172] The extension element 40 is urged into the withdrawal position by a spring 49, so that the force applied by the spring 49 counteracts the insertion movement of the key 200.

[0173] The extension element 40 has a resilient engagement element 74 (see also Figs. 8 and 9). The engagement element 74 is provided for engagement with the key 200. Through the engagement of the engagement element 74 with the key 200, the extension element 40 can be moved from the inserted position to the withdrawn position when the key is withdrawn. Although the spring 49 also supports the movement of the extension element 40 into the withdrawn position, the spring 49 is manipulable. The engagement element 74 prevents manipulation.

[0174] The engagement of the engagement element 74 takes place in that the engagement element 74 in the inserted position rests against the inner side 75 of the stator body 11 as a contact surface 75 against the resilient action of the engagement element 74 and is urged to engage the key 200. In the withdrawn position, however, the engagement element 74 is located in a cavity 76 in the interior of the first rotor element 32. This makes it possible for the engagement element 74 to slide out of the key 200 due to the resilient force of the engagement element 74. In addition, the engagement element 74 comprises a Figure 9 illustrated chamfer 84 as a sliding surface, which is attached to a corresponding chamfer 202 of the key 200 (see Fig. 12 ) as a sliding surface of the key and thus guides the engagement element 74 out of engagement with the key 200. The cavity 76 merges into the key channel 36.

[0175] The engagement element 74 can be designed such that the extension element 40 is disengaged from the key 200 either solely by the resilient force, by the chamfer 84 or by a combination of the resilient force and the sliding of the chamfer 84 when the key 200 is removed.

[0176] When the key 200 is inserted, which pushes the extension element 40 by means of the engagement surface 85, the engagement element 74 is pushed against the resilient force by the contact surface 75 in the direction of the key during the pushing, so that the engagement element 74 engages the key.

[0177] The engagement element 74 is formed integrally with a base body of the extension element 40, wherein the engagement element 40 has a spring portion 74a. The spring portion 74a is designed like a leaf spring. A spring head 74b is located at the free end of the spring portion 74a, with a locking lug 74c with a bevel 84 formed on the spring head 74b, which can engage in a corresponding recess in the key 200. The locking lug 74c is oriented toward the base body of the extension element 40 and has a bevel 74e, which can enable or facilitate the engagement of the locking lug 74c in the recess in the key 200.

[0178] Particularly preferably, the entire extension element 40 is formed in one piece with the section 86, the engagement surface 85 and the engagement element 74.

[0179] The section 86 of the extension element 40 is offset with respect to the base body of the extension element 40, with the spring 49 being inserted into the base section of the extension element 40 adjacent to the section 86. The end face of the section 86 serves to initiate a pushing movement into the coupling part 41, as shown in Figure 2 shown. Thus, the extension element 40 is angled.

[0180] The key 200 includes, as in Figure 12 As shown, a first recess 201 into which the engagement element 74 can engage. The key 200 includes the sliding surface 202. The key 200 includes a bevel 203 for interacting with the bevel 74e. The key 200 has contact elements 205 for contacting the contact elements 44.

[0181] The first rotor element 32 has a larger diameter than the second rotor element 33. This allows the cavity 76 to be provided.

[0182] Figure 11 1 illustrates the extension element 40 in a perspective view adjacent to the electromagnetic actuator assembly 50. The extension element 40 is preloaded by the spring 49, wherein the preload direction corresponds to the direction in which the extension element 40 is held in the withdrawal position for the key 200. The engagement element 74 can engage the key 200 in this position when the key 200 is inserted by an operator or release the key 200 upon withdrawal. During the insertion movement from the withdrawal position to the insertion position of the key 200, the spring 49 is compressed.

[0183] An annular projection 22 is shown, in particular, consisting of half-shell-like parts 87, 90. The parts are inserted into a circumferential groove 45 of the first rotor element 32, see Fig. 4. Outwardly projecting projections 25 of the annular projection 22 fix the parts of the projection 22 in the stator body 11 in their relative position to one another and to the stator body 11. Thus, the projection 22 remains in the stator 10 and does not rotate with the rotor 30.

[0184] The annular projection 22 interacts with the inserted key 200, preferably in a bayonet-like manner, as a key withdrawal lock. For this purpose, the projection 22 engages in a recess 204 of the key. The projection 22 prevents the key 200 from being pressed by the spring 49 of the locking device 1 when the key 200 is inserted, so that the extension element 40 prematurely moves into the withdrawal position and thus the blocking element 51 into the blocking position.

[0185] When the bayonet lock is released, i.e. in the key position in which the recess of the key is arranged in the gap 89, the spring 49 would force the extension element 40 and, via the engagement surface 85, also the key 200 out of the locking device 1. To prevent this, there is a crescent-shaped spring device 88 which compresses the gap 89 so that the gap 89 has a smaller width b than the key 200. This prevents the spring 49 from pushing the key through the gap 89. Instead, a user must actively pull the key out of the locking device 1 against the force of the spring device 88.

[0186] The installation device 1 can also be used in other locking devices, for example, a half cylinder, a knob cylinder, a furniture cylinder, or a padlock. The installation device can also be used in switching elements.

[0187] It is conceivable that the coupling part 41 is omitted. Rather, locking devices according to the invention can be provided in which the driver 103 is rigidly attached to the rotor 30. The driver 103 can also serve as a bolt itself, e.g., in a furniture lock.

[0188] The driver 103 and the insert 105 can be formed integrally with each other. The stator insert element 13 and the stator body 11 can be formed in one piece. It is also conceivable for the sleeve 14 to be omitted and the stator body to be mounted directly in the locking device housing 101.

[0189] In a further alternative of the invention, the locking device 1 is not designed as a built-in device 1. Rather, the stator 10 is designed as a locking device housing 101. Thus, the rotor 30 can be designed to be inserted directly into a locking device housing 101, in particular into the locking cylinder housing 101. In this case, the locking device 1 comprises the driver 103 and, if appropriate, the coupling part 41.

[0190] The transmission device 44 can, for example, be designed as a contact element for electrically contacting the key.

[0191] The first and second rotor elements 32, 33 can be formed in one piece as first and second rotor sections.

[0192] The invention is not limited in its implementation to the preferred embodiment described above. Rather, a number of variants are conceivable, which utilize the presented solution even in fundamentally different embodiments. All features and / or advantages apparent from the claims, the description, or the drawings, including structural details or spatial arrangements, may be essential to the invention both individually and in a wide variety of combinations, as defined in the appended claims.

Claims

1. An electromechanical barrier device (1) for a closure element or for a switching element with a stator (10) and with a rotor (30), wherein the rotor (30) is mounted in the stator, wherein the barrier device (1) comprises an extension element (40), wherein the extension element (40) can be moved in the axial direction between an insertion position and a removal position, wherein the barrier device comprises a barrier element (31), wherein in a first position, the barrier element (31) prevents the rotor (30) from being rotatable relative to the stator (10), wherein in a second position, the barrier element (31) enables the rotor (30) to be rotatable relative to the stator (10), characterised in that the barrier device (1) comprises a blocking element (51), wherein in a release position, the blocking element (51) allows the movement of the barrier element (31) from the first position into the second position and in a blocking position, prevents the movement of the barrier element (31) from the first position into the second position, wherein an actuator (52) serves to enable a movement of the blocking element (51) from the blocking position into the release position, wherein a starting position and the release position can be assumed by the blocking element (51), wherein the extension element (40) and the blocking element (51) are designed such that the extension element (40) in the removal position allows a movement of the blocking element (51) from the release position into a blocking position, in particular into the starting position.

2. The barrier device according to claim 1, wherein the extension element (40) extends in the axial direction at least in the insertion position along an electronic control device (53), along the electrical actuator (52) and / or past the barrier element (31), wherein in particular the electronic control device (53) controls the electromechanical actuator (52) in order to enable the barrier element (31) to move from a first position into a second position.

3. The barrier device (1) according to claim 1 or 2, wherein the extension element (40) is designed to establish an operative connection between the rotor (30) and a driver (103) for transmitting a torque from the rotor (30) to the driver (103), wherein in particular the barrier device (1) is designed to transmit the torque from the rotor (30) to the driver (103) without incorporating the extension element (40).

4. The barrier device (1) according to one of the preceding claims, wherein the rotor (30) comprises a connecting section (38), wherein the connecting section (38) comprises a guide (42) for guiding a coupling part (41) and / or for transmitting a torque from the rotor (30) to the coupling part (41), in particular wherein the connecting section is arranged outside the stator (10).

5. The barrier device (1) according to one of the preceding claims, wherein the extension element (40) in the removal position allows the operative connection of a coupling part (41) with the driver (103) to be broken and / or the extension element (40) leaves the coupling part (41), in particular a coupling element (92) of the coupling part (41), in the connection with the driver (103) when the extension element (40) moves from the insertion position into the removal position.

6. The barrier device (1) according to one of the preceding claims, wherein the extension element is moved from the removal position into the insertion position when a key is inserted and / or is moved from the insertion position into the removal position when a key is removed.

7. The barrier device (1) according to one of the preceding claims, wherein the barrier device comprises a key channel (36) for inserting a key (200), wherein the extension element (40) comprises an, in particular resilient, engagement element (74), for engaging the key (200), wherein the engagement element (74) is designed, in particular under mechanical tension, to be in operative connection with the key (200) in such manner that the extension element (40) is moved, in particular pulled, from the insertion position into the removal position when the key (200) is removed.

8. The barrier device (1) according to one of the preceding claims, wherein the barrier device (1), in particular the stator (10), comprises a contact surface (75) for the extension element (40), wherein the resting of the engagement element (74) on the contact surface (75) under tension produces the operative connection with the key (200), wherein the barrier device (1), in particular the rotor (30), comprises a cavity (76) in which the engagement element (74) comes out of operative connection with the key (200).

9. The barrier device (1) according to one of the preceding claims, wherein the engagement element (74) comes out of operative connection with the key (200) through a resilient effect and / or wherein the engagement element (74) comprises a sliding surface (84), wherein the engagement element (74) is designed such that the sliding surface (84) slides along a corresponding sliding surface of the key (200) and thus the engagement element (74) comes out of operative connection with the key (200).

10. The barrier device (1) according to one of the preceding claims, wherein the extension element (40) comprises an engagement surface (85) for resting on the key (200) so that the extension element (40) can be moved, in particular pushed, by the key (200) from the removal position into the insertion position.

11. The barrier device (1) according to one of the preceding claims, wherein the extension element (40) is designed in one piece and / or is designed to be angled, wherein in particular a section (86) of the extension element which is arranged close to the rotor axis serves to move the coupling part (41).

12. The barrier device (1) according to one of the preceding claims, wherein the blocking position and the release position can be assumed by the blocking element (51), wherein the extension element (40) and the blocking element (51) are designed such that the extension element (40) in the insertion position blocks a movement of the blocking element (51) from the release position into a blocking position, in particular into a starting position.

13. The barrier device (1) according to one of the preceding claims, wherein the barrier device (1) comprises the blocking element (51), wherein a starting position and the release position can be assumed by the blocking element (51) by rotating the blocking element, wherein the extension element (40) and the blocking element (51) are designed such that in the insertion position, a movement of the blocking element from the starting position into the release position is possible in a first direction of rotation (81) and is blocked in a second direction of rotation (82), in particular wherein an angle of rotation (α) between the starting position and the release position in the first direction of rotation (81) is greater than an angle of rotation (β) between the starting position and the release position in the second direction of rotation (82).

14. A locking device (100) with a barrier device (1) according to one of the preceding claims and with a coupling part (41), wherein the coupling part (41) is designed in a plurality of parts, wherein a first segment (91) of the coupling part (41) is designed to be moved by the extension element (40) when the extension element (40) moves from the removal position into the insertion position, wherein a second segment (92) of the coupling part (41) is provided to be connected to the driver (103) in a rotationally fixed manner, wherein the first segment (91) and the second segment (92) are connected elastically, in particular via a spring (93).

15. A locking system (300) with a barrier device according to one of claims 1 to 13 or with a locking device according to claim 14, wherein the locking system (300) comprises a key (200).

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