Device for locking a door leaf

Abstract

The present application relates to a device (1) for locking a door leaf (2) relative to a door frame, comprising a housing (3), an upper locking unit (4) for locking the door leaf (2) at its upper end, a lower locking unit (5) for locking the door leaf (2) at its lower end, a coupling unit (6) for kinematically coupling the two locking units (4, 5), a locking cylinder (7), and a transmission unit (8), wherein the locking units (4, 5) each comprise a locking element (9, 10), wherein the locking units (4, 5) are coupled to each other by means of the coupling unit (6), wherein the locking cylinder (7) is manually operable, wherein the movement of the functional element (11) can be transmitted to one of the locking units (4, 5) by means of the transmission unit (8), such that by actuating the locking cylinder (7) at least one of the locking units (4, 5) is5) can be transferred from their respective locked positions to their respective unlocked positions. According to the invention, the coupling unit (6) comprises a coupling element (12) and two reversing elements (13, 14) cooperating with the coupling element (12), wherein the movement of the functional element (11) can be transmitted to at least one of the reversing elements (13) by means of the transmission unit (8) such that the reversing element (13) is movable translationally relative to the housing (3) as a result of actuation of the locking cylinder (7).

Description

[0001] The present application relates to a device for locking a door leaf relative to a door frame according to the preamble of claim 1. Furthermore, the present application relates to a door according to the preamble of claim 12.

[0002] The device comprises a housing and two locking units by means of which the door leaf can be locked relative to the door frame. The housing can be a separate enclosure in which the other parts of the device are arranged. It is also conceivable that the housing is formed by a vertical profile of a door into which the device is installed. Preferably, an upper locking unit is arranged at an upper end of the device and a lower locking unit at a lower end. Furthermore, the device includes a coupling unit by means of which the two locking units are kinematically coupled. This coupling is achieved by the fact that a transition of one of the locking units from a locked position to an unlocked position causes a corresponding transition of the other locking unit.The locking position of each locking unit is characterized by the fact that the locking unit is designed to interact with a corresponding locking element and thereby lock the door leaf relative to the door frame. Each locking unit comprises at least one locking element, which may be designed, in particular, as an elongated bolt.

[0003] Furthermore, the device includes a locking cylinder suitable for use with a coded key. The locking cylinder can be manually operated using such a key, allowing a functional element of the locking cylinder to be moved between a locked and an open position. The locking cylinder can be, in particular, a standard commercially available locking cylinder.

[0004] Finally, the device includes a transmission unit by means of which the movement of the functional element can be transmitted directly or indirectly to at least one of the locking units. In this way, the device is configured so that, by actuating the locking cylinder, at least one of the locking units can be moved from its respective locked position to its respective unlocked position. Since the locking units are coupled to each other by means of the coupling unit as described above, this movement of one locking unit causes a corresponding movement of the other locking unit. This can occur with a time delay or, preferably, synchronously.

[0005] A door comprising a door leaf with such a device has at least two locking elements designed to interact with the locking elements of the device's locking units, typically forming a positive locking mechanism. The locking elements engage in corresponding recesses of the locking elements, creating the described positive locking. In this way, the respective door leaf is locked relative to the door frame, preventing it from being opened as intended. In an automatic door, the engagement of at least one locking element with a corresponding locking element can be automated by an electric locking device.In this context, it is particularly conceivable that the locking device has an electric motor by means of which a locking element can be moved relative to the door leaf and thereby brought into engagement with a locking element of the device. State of the art

[0006] A device of the type described above is already known in the prior art. Reference is made to German patent application DE 10 2021 101 448 A1. This describes a device that can be manually locked and unlocked alternately by means of a key, so that a corresponding door leaf, to which the device is attached, is locked or unlocked relative to a door frame. The device comprises two locking units, each with a locking element. These locking elements, formed by elongated bolts, are oriented parallel to each other and can each be moved between a retracted position and an extended position. The locking units are kinematically coupled by means of a coupling unit such that the locking units can be moved synchronously between a locked position and an unlocked position.In this mechanism, a functional element of the lock cylinder engages positively with a transmission unit that is part of the coupling unit. This ensures that when the lock cylinder is actuated, causing movement of the functional element, this movement is transferred to the locking bolts via the transmission unit. This, in turn, retracts or extends the locking bolts. To achieve synchronized movement of the locking bolts, the coupling unit incorporates a reversing element, which consists of a crank disc rotatable around a pivot axis. The reversing element allows the movement of one locking bolt to be reversed and transferred to the other, so that the locking bolts retract synchronously (i.e., move towards each other) or extend synchronously (i.e., move away from each other).

[0007] As an alternative to a manually operated device as described in the prior art above, automatic locking systems are known. These are designed to automatically lock and unlock a door leaf relative to its corresponding door frame. It is known that a motor-driven locking element of an electric locking device is moved relative to the door leaf and, during this movement, engages with a bolt element of the respective device that is arranged on the door leaf for locking it. Conversely, the door leaf is automatically unlocked. In this case, the locking element is moved by motor such that the engagement with the bolt element is released, allowing the door leaf to move freely relative to the door frame as intended.

[0008] Manually operated devices are disadvantageous in that they do not allow integration into an automated locking system. Therefore, it is always necessary to lock and unlock each door leaf manually. Doors with automatically lockable leaves are also disadvantageous in that they cannot be easily unlocked in the event of a malfunction of the drive mechanism or, for example, a power outage. Unlocking requires the locking element to be moved relative to the bolt by a motor to release the door leaf. In the presence of a drive malfunction or in the absence of power, such movement is prevented, necessitating manual intervention. This typically requires manually accessing the drive mechanism, which is usually installed in the door frame.This is very costly and therefore disadvantageous. Task

[0009] The present application is therefore based on the task of simplifying the operation of an automatically lockable door. Solution

[0010] The underlying problem is solved according to the invention by means of a device having the features of claim 1. Required embodiments are set forth in the dependent claims.

[0011] The device is characterized in that the coupling unit comprises a coupling element and two reversing elements that interact with the coupling element. Each of the reversing elements is assigned to one of the locking units. In particular, the reversing elements can engage positively with a corresponding positive-locking partner of the respective locking unit. Furthermore, the coupling unit is configured to transmit a movement of one of the locking units to the coupling element via the reversing element assigned to that locking unit, and the resulting movement of the coupling element to its assigned locking unit via the other reversing element. In this transmission, the kinematic coupling of the two locking units using the coupling unit is to be understood as the kinematic coupling of the two locking units in the device according to the invention.

[0012] In particular, a movement of at least part of a locking unit, especially a movement of its locking element, can be transferred to the coupling element by means of the reversing element associated with the locking unit, wherein preferably the direction of movement of the respective part of the locking unit is transferred to the coupling element in reverse by means of the reversing element. For example, it is conceivable that a part of the upper locking unit is moved downwards towards the locking cylinder, whereby, as a result of the action of the reversing element, the coupling element is moved upwards in the opposite direction.Due to the interaction of the coupling element with the second reversing element, which in this example is assigned to the lower locking unit, this upward movement of the coupling element is in turn transferred to the lower locking unit by means of the second reversing element, thereby moving at least part of the lower locking unit, in particular its locking element, downwards in a direction away from the locking cylinder. The "double reversal" achieved in this way can be used to ensure that the locking elements of both locking units move in the same direction relative to the housing.

[0013] The device is further characterized in that the transmission unit is configured to transfer the movement of the functional element to at least one of the reversing elements. This is achieved in such a way that the reversing element is movable translationally relative to the housing as a result of actuation of the locking cylinder. In particular, the movement of the functional element resulting from actuation of the locking cylinder can be transferred to the transmission unit and, by means of the transmission unit, ultimately to the reversing element. This mechanism causes the respective reversing element to move translationally relative to the housing, with the interaction of the reversing element with the coupling element and with the respective locking unit resulting in a similar movement of these two components.It is preferably provided that the reversal mechanism typically effected by the reversing element does not occur, i.e., the parts interacting with the reversing element, namely both a part of the respective locking unit and the coupling element, follow the translational movement of the reversing element.

[0014] For example, the reversing element associated with the upper locking unit can be moved translationally towards the locking cylinder by means of the transmission unit as a result of actuation of the locking cylinder. This causes at least part of the locking unit associated with the reversing element, in particular its locking element, to also move translationally towards the locking cylinder. This movement can be equivalent to the locking element "retracting," which can cause it to lose its positive engagement with a locking element. The upper locking unit is then in its unlocked position. Simultaneously, the coupling element connected to the reversing element is also moved translationally in the same way due to this connection, following the translational movement of the reversing element.Thus, the movements of at least the respective part of the locking unit and the coupling element occur in the same direction, i.e., without reversal by the reversing element. The movement of the coupling element can then be transferred, in turn, by means of the other reversing element assigned to the lower locking unit, to at least a part of the locking unit, in particular its locking element, whereby the second reversing element transfers the direction of movement of the coupling element in reverse to the lower locking unit.With regard to the described example, it is therefore particularly conceivable that the downward movement of the reversing element interacting with the transmission unit, in the direction of the locking cylinder, is transferred to a similarly downward movement of the coupling element and, under the influence of the other reversing element, finally to an opposite upward movement (i.e., in the direction of the locking cylinder) of at least part of the lower bolt assembly. In this way, it is possible to move the bolt elements of the bolt assembly in opposite directions to each other and thereby "engage" them in the same way, which in turn releases the respective engagement of the bolt elements with corresponding locking elements. The bolt assemblies are then in their respective unlocked positions.

[0015] The device according to the invention has many advantages. It enables a combination of manual unlocking of a door leaf with an automated locking system for the door. Thus, at least one locking element can be motor-driven and engage positively with at least one locking element of one of the locking units (locking) or release it (unlocking). The resulting ease of use for such a door is therefore ensured. In the event that the door cannot be moved from a locked to an unlocked state, whether due to a technical fault in the electrical locking device, a power outage, or the like, manual unlocking can now be performed using the device according to the invention, requiring only the key that matches the locking cylinder.In this system, it is particularly possible to position the lock cylinder vertically in the center of the door, making it easily accessible without requiring the user to bend down for a cylinder positioned at foot level or stretch towards one positioned at head level. By operating the lock cylinder, the interaction of the transmission unit and the coupling unit ensures the desired, uniform transition of the locking bolts from their respective locked to their respective unlocked positions.

[0016] In a preferred embodiment, the reversing elements are formed from gears, each rotatably mounted on pivot axes. This allows the reversing elements to mesh with their respective associated parts of the coupling element and the locking unit, thereby transmitting movements of the respective parts relative to each other. In particular, this configuration makes the reversing elements especially well-suited to transmitting the movement of one contact partner, for example, a part of a locking unit, in reverse to the other contact partner, especially the coupling element. In this way, it is particularly easy to transmit the movement of, for example, a locking element of a locking unit, directed in a first direction, in the opposite direction to the coupling element, which then moves in the opposite direction to the locking element.

[0017] Furthermore, it is particularly advantageous if at least one of the locking units can assume three different positions, namely, in addition to the locking and unlocking positions, a receiving position. This can be especially useful for the upper locking unit, as it can interact particularly easily with a motor-driven locking element that is arranged as part of an electric locking device in the upper part of the respective door frame. In the receiving position, the locking element of the locking unit is extended such that it projects beyond an upper end of the device housing and beyond an upper end of the door leaf equipped with the device, and is designed to be engaged by the locking element of the respective locking device, in particular by positive locking.During the automated door closing process, the locking element is moved downwards by a motor and engages the extended bolt element. This moves the bolt assembly from its receiving position to its locked position, whereby preferably a part of the bolt assembly, in particular the bolt element itself or a separate switching element, is pushed a short distance into the housing by the locking element. This movement can be used to move the other bolt assembly, which may be the lower bolt assembly, from its unlocked position to its locked position.Thus, it is particularly easy to transfer the movement of the respective part of the locking unit, which is driven as a result of the interaction with the locking element, to the lower locking unit in the manner described above by means of the coupling unit and to effect a similar movement of the associated locking element.

[0018] Using the upper bolt assembly as an example, which interacts with the locking element of the automatic locking device, the respective part of the bolt assembly, for example its bolt element or a switching element, is pressed by the locking element towards the locking cylinder. This movement is translated by the reversing element into an opposite movement of the coupling element, which moves accordingly upwards, that is, towards an upper end of the housing. This movement of the coupling element is in turn translated by the other reversing element into a downward movement away from the locking cylinder of at least part of the lower bolt assembly, in particular its bolt element. In this way, the bolt element of the lower bolt assembly can in turn engage with a locking element, which is, for example, in the form of a receptacle formed in a door frame associated with the door leaf.Subsequently, both locking elements engage with a locking element, so that the locking units are in their locked positions.

[0019] To move the locking units into their unlocked positions, it is possible, as described, to actuate the locking cylinder and thereby move one of the reversing elements translationally relative to the housing, particularly towards the locking cylinder. For example, the transmission unit can be designed such that the reversing element associated with the upper locking unit is moved towards the locking cylinder, resulting in a similar translational movement of both the reversing element and at least one part of the locking unit due to the positive engagement of the reversing element with the coupling element. Advantageously, at least the locking element of the upper locking unit is moved translationally towards the locking cylinder, so that it loses its positive engagement with the locking element without the locking element itself having to move.The downward movement of the coupling element is, in turn, translated by the second reversing element, which interacts with the lower locking unit, into an opposing movement of at least part of the lower locking unit, in particular its locking element. This allows the locking element of the lower locking unit to move upwards and thus towards the locking cylinder. In this process, the locking element loses its engagement with the corresponding locking element. Consequently, both locking units are now in their respective unlocked positions, so that the door leaf can be moved relative to the door frame as intended.

[0020] In a particularly advantageous embodiment, at least one of the locking units interacts with a spring that is pre-tensioned at one end against the respective locking unit and at the other end against a stop. The spring is preferably designed as a compression spring. Preferably, both locking units interact with a spring. The spring is advantageously pre-tensioned, preferably such that it exerts an upward force on at least part of the respective locking unit.

[0021] If one of the locking units, in particular the upper locking unit, can be moved into a receiving position, it is particularly advantageous if this locking unit interacts with a pre-tensioned spring that tends to hold the locking unit in its receiving position or to move it there. This has the advantage that, during normal operation of the respective locking device, the locking unit automatically returns to its receiving position when the engagement with the locking element of the locking device ceases.

[0022] If at least one spring is used, it can be further advantageous if the associated stop against which the spring rests is movable translationally relative to the housing in the same way as the at least one reversing element, which is itself movable translationally relative to the housing by means of the transmission unit when the locking cylinder is actuated. In this way, the stop can "move along" with the reversing element, so that the reversing element and the stop do not move relative to each other. In this design, it is particularly advantageous if the entire locking unit moves along with the reversing element, so that the spring's tension state does not change due to the translational movement of the reversing element, and in particular, the spring does not impede the movement of the reversing element and / or the locking unit.

[0023] If both locking units interact with a spring, it can be particularly advantageous if the spring force with which one of the springs is pre-tensioned exceeds the spring force with which the other spring is pre-tensioned. Preferably, the spring force of one spring exceeds the spring force of the other by at least 50%, more preferably at least 75%, and more preferably at least 100%. In particular, the spring associated with the locking unit whose associated reversing element is translationally movable by means of the transmission unit as a result of movement of the functional element of the locking cylinder can be pre-tensioned with a lower spring force. The other spring can, in particular, interact with a stop that is fixed relative to the housing, whereby the spring can indirectly assist movement of the reversing element as a result of actuation of the locking cylinder.In particular, it is conceivable that the stronger spring is assigned to the lower locking unit, whose locking element is retracted as a result of the cylinder being actuated, thereby losing its engagement with the corresponding locking element. The spring is preferably pre-tensioned in such a way as to assist this movement, meaning that the spring exerts at least an upward force on the locking element. The force of the spring is consistent with the desired movement resulting from the cylinder being actuated and assists this movement accordingly. This reduces the mechanical resistance required to initiate the mechanism of the device when the cylinder is actuated, making it particularly easy for the user to manually operate the cylinder with a key.

[0024] As explained above, it can be particularly advantageous if at least one of the reversing elements, preferably both reversing elements, is formed by a rotatably mounted gear. This makes the kinematic coupling of the respective locking unit with the coupling element particularly easy to establish, and also allows for the desired reversal of the movement of a respective part of the locking unit relative to the movement of the coupling element to be achieved particularly easily. For this purpose, it is further preferred if both the coupling element and the locking unit interacting with the respective reversing element each comprise a toothed bar that meshes with the reversing element. This makes it particularly easy to establish a positive-locking connection between the coupling unit and the locking units, as well as between the reversing elements and the coupling element.It is understood that, in the case of a translational movement of a respective reversing element as a result of the actuation of the locking cylinder, the toothed strips meshing with the respective reversing element are "carried along", so that the translational movement of the reversing element causes an equal translational movement of at least a part of the bolt unit assigned to the reversing element, possibly the entire bolt unit, as well as the coupling element.

[0025] In a particularly advantageous embodiment, the device includes a stroke increaser by means of which a stroke of the coupling element can be transferred to at least one of the locking units with an increased magnitude. Such a stroke increase is particularly advantageous for moving at least one locking element of a respective locking unit a greater distance during the transition of the locking unit between its locked and unlocked positions than is dictated by the movement of the coupling element. In this way, it is particularly possible to translate a comparatively small movement of a locking element of a first locking unit, resulting from its engagement with a motor-driven locking element, into a larger movement of the locking element of the other locking unit.With an exemplary transmission ratio of at least 1:1.5, preferably achieved by means of stroke increase, and more preferably at least 1:2.5, a movement of a locking element of one locking unit (in particular the upper locking unit) by, for example, 1 cm can be transmitted to the other locking unit (in particular the lower locking unit) by means of the coupling unit, wherein, as a result of the stroke increase, the path along which the other locking element moves is, for example, 3 cm. In this way, in particular, the locking of the door leaf relative to the respective door frame can be achieved by moving the locking units into their respective locking positions, providing particularly good protection against forced opening of the door. In other words, the stroke increase can provide greater security against breaking open the door or other unauthorized access.

[0026] Furthermore, increased stroke can be particularly advantageous in cases where the door leaf is a sliding door leaf. Such a door leaf is typically supported at its lower end by a floor guide. A locking element of a lower locking unit that is not retracted far enough into the door leaf would collide with the floor guide when the door leaf is opened, preventing it from opening fully. Increased stroke, however, ensures that the locking element's retraction movement—that is, its movement towards the locking cylinder—is sufficient to prevent it from colliding with the floor guide.In other words, the locking element is retracted to such an extent that its lower end is at a height above the floor guide. Consequently, the door leaf can be opened further, as there is no collision between the locking element and the floor guide. This results in a larger clear opening for the sliding door leaf when it is in its open position than if the door leaf could not be fully opened. This difference is particularly relevant in retrofit situations where a specific clear opening dimension must be maintained to meet requirements for escape routes or similar regulations.

[0027] If at least one of the reversing elements is formed by a gear, it can be particularly advantageous if the stroke increase is implemented on such a reversing element. For this purpose, the reversing element can, in particular, have two coaxially arranged toothed discs with different diameters. For example, it is conceivable that the diameter of a first toothed disc, which meshes with a toothed strip of the coupling element, is smaller than the diameter of a second toothed disc, which meshes with a toothed strip of the locking unit associated with the reversing element. The transmission ratio between the movement of the coupling element and the movement of the respective part of the locking unit can be adjusted particularly easily via the relative diameters of the two toothed discs.

[0028] Further elaborating the device according to the invention, the transmission unit comprises a translation element pivotably mounted about a pivot axis, which can be moved directly or indirectly between a first and a second pivot position by means of the functional element. This embodiment is particularly advantageous when the functional element of the locking cylinder is moved along a circular path when the locking cylinder is actuated, as is common with most locking cylinders. In particular, the functional element can be moved along a circular arc within an angular range of at least 135°, preferably at least 150°, and more preferably 180°, when moving the locking cylinder from its closed position to its open position. This movement of the functional element can be transduced, at least indirectly, by means of the translation element.In particular, the translation element can interact with a transmission rod of the transmission unit, which is guided along a linear axis as a result of the translation element pivoting about its pivot axis. In this way, the movement of the functional element can be translated into a linear movement of the transmission rod through the interaction of the lock cylinder and the translation element. The translation of the functional element's movement by means of the translation element can, in particular, help to ensure that the force required manually with a key to move the lock cylinder between its locked and unlocked positions remains so low that the lock cylinder can be operated easily. This also reduces the risk of the key bending or, in the worst case, breaking.

[0029] Provided the translation element described above is present, it can be particularly advantageous if the transmission unit has a transmission element that interacts directly with the functional element. The transmission element is designed to be displaced by the functional element during the actuation of the locking cylinder and thereby moved translationally relative to the housing. Furthermore, the transmission element is positively connected to the translation element, allowing the translation element to pivot about its pivot axis. In particular, a channel can be formed in the transmission element, especially in the form of a milled recess, in which a pin connected to the translation element is positively guided.In this design, the movement of the functional element leads to the translational movement of the transmission element, which, due to the positive-locking connection with the translation element, causes the latter to pivot. As explained above, it is particularly advantageous if the pivoting movement of the translation element is transferred to a transmission rod, which then moves translationally relative to the housing and, in doing so, directly or indirectly "carries along" the reversing element translationally relative to the housing in the desired manner.

[0030] The underlying problem is further solved according to the invention by means of a door with the features of claim 12. This door, which can in particular be designed in the form of an automatic door, comprises at least one door leaf and an electric locking device. The door leaf can in particular be designed as a swing leaf, a sliding leaf, or as part of a revolving door. In each case, the door leaf interacts with a device designed to lock the door leaf relative to a door frame of the door as described above. The locking device comprises an electric drive by means of which a locking element of the locking device can be moved. In this way, the locking element can be moved between a closed state and an open state.When the locking element is in its closed position, it engages positively with a locking element of a locking unit of the device, thereby blocking movement of the door leaf relative to the door frame. In other words, the door leaf is locked in this state. Accordingly, the locking element is positioned so that it can be engaged by the locking element. Specifically, the locking element projects beyond the upper end of the door leaf facing the locking device. When the locking element is in its open position, it releases the locking element, allowing the door leaf to move relative to the door frame.

[0031] The door according to the invention can be implemented particularly simply using a device according to the invention as described above. The advantages resulting from this have already been explained above. In particular, it is possible to lock the door leaf automatically, so that movement relative to the door frame is blocked. Automated unlocking is also possible. In the event of a defect that prevents the locking mechanism from operating, the door leaf can be unlocked manually, whereby the locking units are moved from their respective locked positions to their respective unlocked positions. As described, this can be done manually using a key that is inserted into the locking cylinder of the device and turned. The mechanism of the device set in motion by this action has been explained above.The door is therefore advantageous in that it can be unlocked particularly easily even if the electric locking mechanism malfunctions. In particular, no access to the locking mechanism is required, as is usually the case with prior art.

[0032] The door according to the invention is particularly advantageous if it provides at least a second locking element, preferably on the door frame, which is designed for positive engagement with a locking element of the second locking unit of the device. The locking element can, in particular, be designed in the form of a receptacle. In this way, the door leaf can be blocked particularly securely relative to the door frame, since the locking elements of both locking units each engage positively with their respective locking elements and thereby lock the door leaf relative to the door frame.

[0033] A particularly preferred embodiment is one in which the locking element of the electric locking device, during its actuation which is intended to lock the door leaf, is moved towards the door leaf and a locking element of a locking unit engages it in a form-fitting manner. In this case, the respective locking unit to which the locking element belongs can be in a receiving position in which the locking element of the locking unit is extended sufficiently for the locking element of the locking device to engage it as intended.

[0034] It is particularly advantageous if, during engagement with the locking element, the locking element is "pressed" at least a short distance towards the housing of the device, i.e., retracts a short distance into the housing. As explained above, this movement of the locking element, via the coupling unit, causes a corresponding movement of the locking element of the other locking unit, oriented in the same direction as the movement of the locking element interacting with the locking element. This allows the second locking element to be "extended" and thereby engage positively with a locking element, while simultaneously the first locking element is engaged by the electrically driven locking element of the electric locking device.In this way, the door leaf can be fixed and locked relative to the door frame particularly easily using both locking units, at least essentially simultaneously.

[0035] In a particularly advantageous embodiment of the door, the door leaf is formed by a sliding door leaf, wherein the door includes a floor guide for guiding the door leaf. The device features a stroke enhancer that interacts directly or indirectly with a locking element of a lower locking unit, such that, during the transition of the locking unit from its locked position to its unlocked position, the locking element can be raised towards a locking cylinder of the device by the stroke enhancer in such a way that, when the locking unit is in its unlocked position, a lower end of the locking unit is located at a height above the floor guide. As explained above, this embodiment has the advantage that a collision between the locking element of the lower locking unit and the floor guide is prevented when the door leaf is opened, since the locking element effectively moves over the floor guide.As a result, the door leaf can be fully opened, thereby completely revealing the clear width of the door. Examples of implementation

[0036] The invention is explained in more detail below with reference to an embodiment illustrated in the figures. These show: Fig. 1: A schematic diagram of a device according to the invention, wherein an upper locking unit is in a receiving position, Fig. 2: The schematic diagram according to Figure 1 , wherein two locking units are each in their locked position, Fig. 3: The schematic diagram according to Figure 1 , wherein both locking units are in their unlocked position, Fig. 4: A vertical longitudinal section through a device according to the invention, the upper locking unit of which is in a receiving position, Fig. 5: The device according to Figure 4, wherein the upper locking unit and a lower locking unit are each in their locked position, Fig. 6: The device according to Figure 4 , wherein both locking units are each in their unlocked position, Fig. 7: A vertical longitudinal section through another device according to the invention, the upper locking unit of which is in a receiving position, Fig. 8: The device according to Figure 7 , wherein the upper locking unit and the lower locking unit are each in their locked position, Fig. 9: The device according to Figure 7 , with both locking units in their unlocked position, Fig. 10: A detail of a door leaf guided by a floor guide.

[0037] A device according to the invention 1 First, an idealized representation of principles will be used according to the Figures 1 to 3 Explained. Two possible concrete embodiments of the devices according to the invention. 1are then the Figures 4 to 6 as well as the Figures 7 to 9 to be taken.

[0038] The device 1, which are intended to work in conjunction with a door leaf not shown here 2 suitable includes a housing 3, within which an upper locking unit 4 and a lower locking unit 5 are stored. The locking units 4, 5 Each includes a locking element 9, 10, the translational relative to the housing 3 are movable. The locking elements 9, 10 are each formed by elongated bolts oriented parallel to each other. Furthermore, the locking elements are 9, 10 similar relative to the case 3 movable, in particular parallel to each other, especially preferably along a common axis. The locking units 4, 5 are connected by means of a coupling unit 6 kinematically coupled to each other. The coupling unit comprises...6 two reversing elements 13, 14 as well as a coupling element 12. The reversal elements 13, 14 are the locking units 4, 5 assigned, each with a reversal element 13, 14 with one of the locking units 4, 5 interacts. In addition, the reversal elements are 13, 14 by means of the coupling element 12 interconnected. The reversing elements 13, 14 In the example shown, each is formed by gears that rotate around axes of rotation. 31, 32 are rotatably mounted. The reversing element is... 13, the upper locking unit 4 is assigned to a transmission unit 8 mounted, which in the example shown is rod-shaped. The transmission unit 8 is translationally relative to the housing 3 movable and works with a locking cylinder 7together, which can be operated manually using a key (not shown). Accordingly, the lock cylinder 7 a recess into which a correspondingly coded key can be inserted in a form-fitting manner. By operating the lock cylinder. 7 The transmission unit 8 in the example shown, translationally relative to the housing 3 moved vertically downwards in one direction, thereby equally affecting the transmission device 8 stored reversing element 13 is carried along. The device's functionality 1 This results in the following:

[0039] First, the door leaf 2, the one with the device 1 The device is equipped but not locked, meaning it can be moved relative to a door frame as intended. The corresponding state of the device 1 is particularly good based on Figure 1recognizable. The upper locking unit 4 is in a receiving position in which its locking element 9 is extended, so that an upper end section of the locking element 9 over an upper end of the casing 3 It protrudes. At the same time, the lower locking unit is located there. 5 in an unlocked position in which its locking element 10 completely inside the housing 3 is retracted. When in the receiving position, the upper locking unit 4 suitable to interact with a locking element of an electric locking device, which is the bolt element 9 seizes. Such a locking element is not shown in the example depicted.

[0040] As a result of the engagement of the locking element with the bolt element 9 The latter will be partially integrated into the housing 3 retracted or pressed in, so that the locking element 9less far above the top of the case 3 This is exemplified in Figure 2 shown. These downwards, towards the lock cylinder. 7 directed movement of the locking element 9 In the example shown, this is done directly using the reversal element. 13 to the coupling element 12 transferred. For this purpose, it may be provided in particular that both the locking element 9 as well as the coupling element 12 each is equipped with a toothed rack by means of which the aforementioned components are connected to the reversing element designed as a gear. 13 combing is possible. As can be seen from the idealized representation, this design ensures that during the retraction of the locking element, 9 the coupling element 12 is moved upwards in the opposite direction, i.e., towards the top of the casing 3moved. Through the effect of the second reversing element. 14 This movement of the coupling element will 12 to the lower locking unit 5 and in particular its locking element 10 transferred. This also involves a reversal of direction, so that the locking element 10 downwards in one direction, i.e. from the lock cylinder 7 away, is moved. The locking element 10 It can also be equipped with a toothed rack, making it particularly easy to use the reversing element designed as a gear. 14 can be combed. As a result, the locking element 10 the lower locking unit 5 extended so that it partially extends over the lower end of the housing 3 It protrudes. In this position, the lower locking element 10designed to engage with a corresponding locking element, which can be formed, for example, on or in the respective door frame. Both locking units 4, 5 are now in their locked position, in which they each interact with locking elements and thereby secure the door leaf 2 fix relative to the door frame.

[0041] For the transfer of the locking units 4, 5 returning to their previous positions is normal operation of the device. 1 It is provided that the locking element of the electric locking device is lifted, thereby enabling the positive engagement with the bolt element. 9 the upper locking unit 4 is solved. In particular, the locking element can be released by the action of at least one spring not shown in the figures. 9 the movement of the locking element is followed, thereby controlling the upper locking unit 4are returned to their receiving position. Due to the effect of the coupling unit. 6 Such a movement of the locking element means 9 a movement of the locking element in the same direction 10 the lower locking unit 5, so that said locking element 10 back into the case 3 is retracted. The door leaf 2 It is then unlocked again and can be moved relative to the door frame.

[0042] In the event that the door leaf cannot be unlocked 2 If this is not possible, particularly due to a defect or power failure of the electric locking device, the door leaf may 2 It cannot be unlocked by lifting the locking element. However, according to the invention, manual unlocking is possible even without moving the locking element. For this purpose, the key is inserted into the lock cylinder. 7 inserted and the lock cylinder7 actuated. This actuation results in the transmission unit being used. 8 the inverse element 13, the upper locking unit 4 is assigned translationally relative to the housing 3 is moved. In the example shown, this movement occurs in a downward direction, so that the reversing element 13 towards the lock cylinder 7 is moved. This is particularly evident from the following: Figure 3 . Due to the positive locking connection of the reversing element 13 both with the upper locking unit 4, here in particular the associated locking element 9, as well as the coupling element 12, Both the aforementioned locking element and the bolt element will be used. 9 as well as said coupling element 12 translationally relative to the housing 3 moved downwards. The reversing element 14, the lower locking unit 5The assigned position remains stationary relative to the housing. 3 fixed and is not determined by the movement of the transmission unit 8 This affects the coupling element. 12 relative to the inverse element 14. Due to the accompanying mechanism, this leads to the locking element 10 the lower locking unit 5 in the opposite direction, i.e., upwards. The movements of the transmission unit 8 and the resulting movements of the other parts are coordinated in such a way that both the locking element 9 the upper locking unit 4 as well as the locking element 10 the lower locking unit 5 completely inside the housing 3 be retracted. This causes the locking elements to move. 9, 10 Each is out of engagement with its respective locking element, so that both locking units are4, 5 in an unlocked position. The door leaf 2 It is then unlocked, allowing it to move relative to the door frame as intended.

[0043] Based on the schematic diagrams according to the Figures 1 to 3 The illustrated principles are also reflected in one way or another in the two exemplary embodiments according to the Figures 4 to 6 and 7 to 9 realized.

[0044] In a first embodiment, which is described in the Figures 4 to 6 As shown, the device includes 1, which are located here in a door leaf 2 is arranged, an upper locking unit 4, which has a locking element 9 is equipped. Furthermore, the device includes 1 a lower locking unit 5, which has a locking element 10 It is equipped with a coupling unit. 6 present, the two reversal elements 13, 14 as well as a coupling element12 comprises, the latter being designed in the form of an elongated push rod. The individual assemblies of the device 1 are inside the housing 3 arranged approximately in the middle of the device 1 It includes a locking cylinder. 7, which is a functional element 11 includes the lock cylinder 7 works with a transmission unit 8 together, by means of which a movement of the functional element 11 on the reversing element 13 transferable, that of the upper locking unit 4 is assigned. This is done in such a way that the inverse element 13 as a result of the activation of the lock cylinder 7 translationally relative to the housing 3 is movable. In the example shown, this occurs in the form of a downward movement of the reversing element. 13, that means in the direction of the lock cylinder 7 to.

[0045] In the Figure 4 The locking units are in the state shown. 4, 5 not in interaction with corresponding locking elements 30, 37. The door leaf 2, on which the device 1 is therefore freely arranged relative to that in the F The door frame (not shown) is movable. The upper locking unit 4 is in a receiving position in which it is suitable to be received by a closing element 30 an electrical locking device, which is also not shown. 28 to be gripped in a form-fitting manner. The lower locking unit 5 is in its unlocked position.

[0046] To lock the door leaf 2 will the locking element 30 by means of an electric drive 29 lowered, whereby the locking element 9 the upper locking unit 4 is grasped in a form-fitting manner. As in Figure 5 The bar element is shown here. 9 at least a little way into the casing 3 the device 1 "compressed". This results in a spring 16, the one with the upper locking unit 4 It is connected and compressed. The spring 16, which is formed by a pre-tensioned compression spring, rests against a stop 18 off. By means of the spring 16 is ensured that the locking element 10 When it is extended again, the locking element should 30 be restarted. As a result of the downward movement of the closing element. 30 The upper locking unit is located 4 now in their locked position.

[0047] The "pressing in" of the locking element 9 According to the principle explained above, this leads to a reverse upward movement of the coupling element. 12, that through the action of the reversal element13 is lifted. This is achieved using both the upper locking unit and the upper locking unit. 4 as well as the coupling element 12 each with toothed racks 20, 22 together, which with the inverse element 13 combing. The upward movement of the coupling element 12 leads via the reversing element 14, the lower locking unit 5 is assigned, corresponding to a downward movement of the locking element. 10 the lower locking unit 5. Here, the inverse element is 14 with an increase in stroke 27 equipped. This is achieved by the fact that the reversing element 14 comprising two coaxial toothed discs, wherein the diameter of a first toothed disc, not visible in the figures, is connected to a toothed strip 23 of the coupling element 12 combs, is smaller than the diameter of the second toothed disc, which is connected to a toothed strip 21the lower locking unit 5 interlocks. This results in the upward movement of the coupling element. 12 into a larger downward movement of the locking element 10 is translated. This makes the locking element 10 over a lower end of the door leaf 2 extended and thereby engages with a stationary locking element 37 one that is particularly in the form of a door frame of the door leaf 2 trained recording can be trained. The two locking units 4, 5 are now each in their locked position.

[0048] For manual unlocking of the door leaf 2 can now the lock cylinder 7 can be used. This is suitable for receiving a correspondingly coded key, whereby, as a result of actuation of the lock cylinder, 7 the functional element 11It is guided along a circular arc segment within an angular range of approximately 180°. This movement of the functional element 11 The result is that the inverse element 13, the one with the upper locking unit 4 interacts translationally relative to the housing 3 is moved downwards. For this transmission of the movement of the functional element. 11 on the reversing element 13 is a transmission unit 8 responsible for both the lock cylinder and the lock cylinder 7 as well as with the inverse element 13 interacts. In its specific design, the transmission unit comprises 8 a transmission element 26, a translation element 25, a transmission rod 36 and a support element 15. The translation element 25 is about a pivot axis 24 swiveling on the housing 3It is mounted and engages positively with the transmission rod. 36 together. The transmission rod 36 is on their lock cylinder 7 opposite end with the support element 15 connected, which is the reversal element 13 carries. The transmission rod 36 and therefore the support element 15 are due to a pivoting movement of the translation element 25 linearly movable up and down relative to the housing 3.

[0049] To control the swiveling movement of the functional element 11 on a pivoting movement of the translation element 25 To transfer, the functional element engages 11 directly with the transmission element 26 one that is guided and movable within the housing 3 is stored. In particular, the transmission element has 26 a milled recess in which a guide pin of the translation element is located. 25is stored. Through the action of the functional element 11 The transmission element 26 contrary to the effect of a spring 34 lifted, i.e. into one of the lock cylinders 7 Displaced in the opposite direction. As soon as the functional element 11 When its highest point exceeds approximately 90° compared to a starting position, the transmission element 26 by the action of the spring 34 pushed back so that it is ultimately in its starting position, the functional element 11 However, it is rotated 180°. This becomes particularly clear when comparing the Figures 5 and 6 . As a result of the coupling of the transmission element 26 with the translation element 25, The translation element will be 25 as a result of the movement of the transmission element 26 forced to its pivot axis 24pivots and, due to the coupling with the transmission rod, causes 36 and support element 15 the downward movement of the latter.

[0050] This leads to the downward movement of the reversal element as described. 13. Since the latter is positively locked via the toothed strips 20, 22 with the upper locking unit 4 and the coupling element 12 The locking element is connected in the same way. 9 upper locking unit 4 and the coupling element 12 moved downwards. Furthermore, the stop is 18 the spring 16 on the support element 15 arranged so that a state of tension is maintained in the spring 16 This movement did not change anything. The downward movement of the coupling element 12 As explained above, this leads to an opposite movement of the locking element. 10 the lower locking unit 5,which are also pre-tensioned by means of a spring under pressure 17 is supported, which is taking action against an attack 19 supported. This results in the locking element being... 10 into the door leaf 2 is drawn in and engages with the locking element in a form-fitting manner. 37 loses. Similarly, the locking element loses 9 its form-fitting engagement with the locking element assigned to it 30 during the downward movement of the reversal element 13. As a result, the locking units are located 4, 5 now each in their unlocked position, so that the door leaf 2 is movable relative to the door frame.

[0051] Preferably, a spring tension force is 17, the one with the lower locking unit 5 together, greater than the spring's tension force 16, the one with the upper locking unit 4interacts. In particular, the tension force of the spring can 17 twice as large, preferably three times as large, as the spring force 16. This activates the lock cylinder as described. 7 simplified.

[0052] In a further embodiment of a device according to the invention 1, which are made up of the Figures 7 to 9 The upper locking unit includes 4 a locking element 9 as well as a separate switching element 33. The electric locking device 28, which have an electric drive 29 includes, and further includes, a locking element. 30, by means of the drive 29 towards the locking element 9 It can be lowered. This ensures that the locking element... 9 positive locking from the locking element 30 is seized, whereby the locking element 9as such, however, not in the direction of the lock cylinder 7 the device 1 is moved. However, as a result of the movement of the locking element 30 the switching element 33 activated, which is in the direction of the lock cylinder 7 is "pressed in". The switching element 33 works with a toothed rack 20 together, which with the inverse element 13, the upper locking unit 4 The assigned element combs. The reverse element combs in the described manner. 13 furthermore via a toothed rack 22 with the coupling element 12 the coupling unit 6, so that the downward movement of the switching element 33 a corresponding upward movement of the coupling element 12 This causes the coupling element. 12 This movement is formed here by a pull rope. This movement is then transmitted, as described, via the further reversing element.14 to the lower locking unit 5 transferred so that its locking element 10 is extended. In this embodiment as well, this movement is achieved by increasing the stroke. 27 reinforced, for which a movable gear is used. 35, a fixed tooth row 38 as well as a movable toothed rack 39 come into play. This becomes particularly clear when comparing the Figure 7 and 8 . Thus, the movable gear meshes 35 on the fixed toothed rack 38, which relative to the case 3 is fixed. The movement of the gear 35 This has a direct effect on the locking element. 10 the lower locking unit 5 out, that the gear 35 via the movable toothed rack 39 with the locking element 10 is kinematically coupled. The movable gear 35is attached to a support element 40 arranged in accordance with the translational movement of the movable gear 35 along the fixed toothed rack 38 moved. The toothed rack 21 the lower locking unit 5 is attached to this support element 40 formed, whereby the toothed rack 21 analogous to the above description of the reversal element 14 with the toothed rack 23 the coupling unit 6 combs. The interaction of the reversal element 14 with the toothed rack 21 as well as the movable gear 35 with the movable toothed rack 39 This leads, as desired, to the increase in stroke, which here translates to a ratio of 1:2.

[0053] By lowering the switching element 33 as a result of the lowering of the locking element 30 Both the upper locking unit and the upper locking unit will be replaced. 4 as well as the lower locking unit 5each is moved into its locking position, whereby the locking element 9 the upper locking unit 4 with the locking element 30 and the locking element 10 the lower locking unit 5 with the additional locking element 37 to engage in a form-fitting manner. This is particularly evident in the case of Figure 8 .

[0054] In order to now manually unlock the door leaf 2 to effect, particularly in the event of a defect in the locking mechanism 28 or, for example, in the event of a power outage, the locking cylinder will be 7 activated. This results in a movement of something in the Figures 7 to 9 functional element not shown 11 such a way to the reversing element 13 is transferred, which is connected to the upper locking unit 4 interacts so that the reversal element 13 towards the lock cylinder 7to be moved. This transmission of the movement of the functional element. 11 on the reversing element 13 This is done via the transmission unit 8, which is connected here by an elongated transmission rod 36 is formed. The transmission rod 36 is with a support element 15 coupled, which here is part of the upper locking unit 4 is formed. The reversal element 13 is on this support element 15 mounted so that a translational movement of the transmission rod 36 to a corresponding movement of the support element 15 and thus of the inverse element 13 leads to the result being the inverse element. 13 towards the lock cylinder 7 to move, whereby the support element is also moved. 15 arranged bar element 9 the upper locking unit 4 is "retracted". This causes the locking element to lose its position.9 its intervention with the locking element 30, so that the upper locking unit 4 from now on it is in its unlocked position. The operation of the lock cylinder. 7 and the resulting movement of the functional element 11 are accordingly by means of the transmission unit 8 indirectly affecting the locking units 4, 5 It has been transferred that these are moved from their locking positions to their unlocking positions.

[0055] As a result of the movement of the upper locking unit 4 in the direction of the lock cylinder 7 (downwards) the coupling element is connected in the manner described. 12 also moved downwards. Since the coupling element 12 Here, being designed as a rope and as such flexible, the movement of the upper toothed rack is 21 of the coupling element 12 not on the lower tooth row 22transferred. Instead, the coupling element attaches itself. 12 in folds and thereby gives the lower dentition 22 a range of motion for a downward movement, that is, in one direction from the lock cylinder 7 away. This range of motion, which exists before the locking cylinder is actuated, is gone. 7 not existing, now allows the spring 17, which is tensioned with a compressive force, the toothed rack of the stroke enlargement 27 and accordingly the toothed rack 21 the lower locking unit 4 towards the lock cylinder 7 to raise, since the due to the inversion element 14 conditional reversal of this upward movement towards a downward movement of the toothed rack 23 the coupling unit 6 This is now possible due to the increased range of motion. As a result, the locking element loses its... 10 the intervention with the associated locking element 37,so that the lower locking unit is also 5 now in its unlocked position. The door leaf 2 can now be moved as intended relative to the door frame, although the locking element 30 the electric locking device 28 remains unchanged in a lowered position, in which it is typically positively locked to the locking element 9 the upper locking unit 4 intervenes.

[0056] In one embodiment, where the door is formed by a sliding door, the door leaf 2 The door is shifted relative to the door frame to open. To guide the movement of the door leaf, the door has a floor guide. 41, which are based on Figure 10The floor guide is located at the lower end of the door, directly against the door frame. It protrudes slightly beyond the floor, which inherently creates a risk of collision with the locking mechanism. 10 the lower locking unit 5 the device 1 consists of those connected to the door leaf 2 interacting. In the example shown, the device has a stroke increase. 27, which has the technical effect that a stroke of the locking element 10 during the transfer of the lower locking unit 4 the distance from its locked position to its unlocked position is comparatively large. For example, the stroke increase can 27 exhibit a translation of 1:3, so that movement of the locking element 9 the upper locking unit 4 in terms of amount when transferred to the locking element 10 the lower locking unit 5is tripled. The effect of the increased stroke. 27 This results in the locking element 10 so far in the direction it is Figure 10 lock cylinder not shown 7 the device 1 is raised so that a lower end 42 the locking unit 10 when the locking unit is present 4 in their unlocked position above the floor guide 41 is located, that is, at a height level above the ground level 41. This condition is in Figure 10 illustrated.

[0057] Therefore, a collision between the locking element is possible. 10 and the floor guidance 41 avoided, which makes it possible to open the door leaf 2 to open completely, thereby fully exposing the clear width of the door. Would the locking element 10 can only be lifted a shorter distance and then with the floor guide 41 If the door leaf collides, it could collide.2 However, it cannot be fully opened, so the clear width of the door would effectively be reduced. This is particularly disadvantageous in cases where regulations require a certain clear width for an open door. Reference symbol list

[0058] 1 Device 2 Door 3 Housing 4 Bolt unit 5 Bolt unit 6 Coupling unit 7 Lock cylinder 8 Transmission unit 9 Bolt element 10 Bolt element 11 Functional element 12 Coupling element 13 Reversing element 14 Reversing element 15 Support element 16 Spring 17 Spring 18 Stop 19 Stop 20 Toothed strip 21 Toothed strip 22 Toothed strip 23 Toothed strip 24 Swivel axis 25 Translation element 26 Transmission element 27 Stroke enlargement 28 Locking device 29 Drive 30 Locking element 31 Pivot axis 32 Pivot axis 33 Switching element 34 Spring 35 Gear 36 Transmission rod 37 Locking element 38 Toothed strip 39 Toothed strip 40 Support element 41 Floor guide 42 End

Claims

1. Device (1) for locking a door leaf (2) relative to a door frame, comprising - a housing (3), - an upper locking unit (4) for locking the door leaf (2) at its upper end, - a lower locking unit (5) for locking the door leaf (2) at its lower end, - a coupling unit (6) for kinematically coupling the two locking units (4, 5), - a locking cylinder (7), and - a transmission unit (8), wherein the locking units (4, 5) each comprise a locking element (9, 10), wherein the locking units (4, 5) are coupled to each other by means of the coupling unit (6) in such a way that the transfer of one of the locking units (4, 5) from a locked position, in which the respective locking unit (4, 5) is equipped to interact with a corresponding locking element (30) and to thereby lock the door leaf (2) relative to the door frame, into an unlocked position causes an identical transfer of the other locking unit (4, 5), wherein the locking cylinder (7) is suitable for interaction with a key encoded on the locking cylinder (7), by means of which key the locking cylinder (7) can by manually actuated and a functional element (11) of the locking cylinder (7) can thereby be moved between a locked position and an open position, wherein the movement of the functional element (11) by means of the transmission unit (8) can be directly or indirectly transmitted to at least one of the locking units (4, 5), so that by means of the actuation of the locking cylinder (7), at least one of the locking units (4, 5) can be transferred from its respective locked position into its respective unlocked position, characterized in that the coupling unit (6) comprises two reversing elements (13, 14) and also a coupling element (12) coupling the two reversing elements (13, 14) to one another, wherein one of the reversing elements (13, 14) respectively interacts with one of the locking units (4, 5), wherein the coupling unit (6) is equipped to transmit a movement of one of the locking units (4, 5), by means of the reversing element (13, 14) assigned to the respective locking unit (4, 5), to the coupling element (12), and the movement of the coupling element (12) caused thereby is transmitted by means of the other reversing element (13, 14) to the locking unit (4, 5) assigned to it, wherein the movement of the functional element (11) can be transmitted by means of the transmission unit (8) to at least one of the reversing elements (13) in such a way that the reversing element (13) can be moved translationally relative to the housing (3) as a result of an actuation of the locking cylinder (7).

2. Device (1) according to claim 1, characterized in that at least one of the locking units (4, 5) interacts with a spring (16, 17), which is tensioned on one of its sides toward the respective locking unit (4, 5) and on its other side toward a stop (18, 19), wherein the spring (16, 17) preferably tensions the locking unit (4, 5) in the direction of its locked position.

3. Device (1) according to claim 2, characterized in that the stop (18, 19) is assigned to the reversing element (13) which can be moved translationally relative to the housing (3).

4. Device (1) according to claim 2 or 3, characterized in that both locking units (4, 5) respectively interact with a spring (16, 17), wherein a tensioning force, with which one of the springs (17) is tensioned, preferably exceeds a tensioning force, with which the other spring (16) is tensioned, by at least 50 %, preferably at least 75 %, more preferably at least 100 %.

5. Device (1) according to claims 3 and 4, characterized in that the stop (18) of the spring (16), which is tensioned at the lower tensioning force, is assigned to the reversing element (13), which can be moved translationally relative to the housing (3).

6. Device (1) according to one of the preceding claims, characterized in that at least one of the reversing elements (13, 14), preferably both reversing elements (13, 14), is formed by a gear, wherein preferably both the coupling element (12) and also the locking element (4, 5) interacting with the respective reversing element (13, 14) respectively comprise a toothed rack (20, 21, 22, 23) which meshes with the reversing element (13, 14).

7. Device (1) according to one of the preceding claims, characterized by a travel magnification (27), by means of which a travel of the coupling element (12) can be transmitted, increased in magnitude, to at least one of the locking units (4, 5), wherein the travel magnification (27) is preferably assigned to the lower locking unit (5).

8. Device (1) according to claims 6 and 7, characterized in that the travel magnification (27) is designed on a reversing element (14) formed by a gear, wherein the reversing element (14) has two coaxial toothed discs of different diameters.

9. Device (1) according to claims 6 and 7, characterized in that the travel magnification (27) comprises a gear (35), which is movable along a fixed toothed rack (38) and meshes with a movable toothed rack (39), wherein the movable gear (35) is arranged on a support element (40), on which a further toothed rack (21) is arranged, which further toothed rack meshes with the reversing element (14) formed by the gear.

10. Device (1) according to one of the preceding claims, characterized in that the transmission unit (8) comprises a translation element (25), which is pivotable about a pivot axis (24) and can be transferred, directly or indirectly by means of the functional element (11), between a first pivot position and a second pivot position, wherein a rotational movement of the functional element (11) can be transformed, by means of the translation element (25), into the translational movement, which can be transmitted to the reversing element (13).

11. Device (1) according to claim 10, characterized in that the transmission unit (8) comprises a transmission element (26), which interacts with the functional element (11) in such a way that it is displaced by the functional element (11), over the course of an actuation of the locking cylinder (7), and is thereby moved translationally relative to the housing (3), wherein the transmission element (26) is positively connected to the translation element (25) and, over the course of its movement, is equipped to pivot the translation element (25) about the pivot axis (24).

12. Door, in particular in the form of an automatic door, comprising - at least one door leaf (2), - a door frame, and - an electric locking device (28), wherein the door leaf (2) is equipped with a device (1) according to one of the preceding claims, wherein the locking device (28) has an electric drive (29) for driving a locking element (30), which can be transferred between a locked state and an open state, wherein the locking element (30), in the case of its locked state, positively engages with a locking element (9) of a locking unit (4) of the device (1) and thereby blocks a movement of the door leaf (2) relative to the door frame, wherein the locking element (30), in the case of its open state, releases the locking element (9).

13. Door according to claim 12, characterized in that the door leaf (2) is formed by a sliding door leaf, wherein the door comprises a bottom guide (41) for guiding the door leaf (2), wherein the device (1) has a travel magnification (27), which interacts directly or indirectly with a locking element (10) of a lower locking unit (5) such that the locking element (10), over the course of a transfer of the locking unit (5) from its locked position into its unlocked position, can be lifted in the direction of a locking cylinder (7) of the device (1) to such an extent that, in the case that the locking unit (5) is located in its unlocked position, a lower end (42) of the locking unit (10) is located at a height above the bottom guide (41), due to the effect of the travel magnification (27).

Images