Electrically actuated closing device for a door assembly

Abstract

The invention relates to an electrically switchable locking device (3) for a door system, comprising a housing (7), a door opener latch (11) interacting with a lock latch and movable between a closed position and an open position, an electrically actuated actuator (30), and a locking arrangement (20) arranged between the door opener latch (11) and the actuator (30), which the actuator (30) switches between a locked state and a released state, wherein the door opener latch (11) is locked against movement into the open position in the locked state of the locking arrangement (20) and is released for movement into the open position in the released state of the locking arrangement (20), wherein the locking arrangement (20) has at least one ball (22A) linearly movable within a guide (28) inside the housing (7).22B) as a locking element (22) and a locking axis (24) guided in a through-opening (26.1), which the actuator (30) moves via a slide (29) between a locking position, which corresponds to the locking state of the locking arrangement (20), and a release position, which corresponds to the release state of the locking arrangement (20), wherein the guide (28) of the at least one ball (22A, 22B) runs between the door opener latch (11) and the locking axis (24) and opens into the through-opening (26.1) of the locking axis (24), wherein the locking axis (24) blocks the linear movement of the at least one ball (22A, 22B) and the movement of the door opener latch (11) in the locking position and releases it in the release position,as well as a corresponding door assembly with such a locking device (3). According to the invention, the locking arrangement (20) comprises a damping device (50) with at least one elastic damping element (52) which dampens mechanical oscillations and / or vibrations transmissible to the locking axis (24).

Description

[0001] The invention relates to an electrically switchable locking device for a door system of the type mentioned in the preamble of claim 1 and to a corresponding door system with such an electrically switchable locking device.

[0002] Door systems with at least one door leaf and an electrically switchable holding device, which is used as a door opener, are known from the prior art. Such an electrically switchable holding device generally comprises a housing, a door opener latch that interacts with a lock latch and is movable between a closed and an open position, an electrically operated actuator, and a locking arrangement arranged between the door opener latch and the actuator, which the actuator switches between a locked state and a release state. In the closed position, the door opener latch is locked against movement into the open position by the locking arrangement. In the release state of the locking arrangement, the door opener latch is released for movement into the open position. With electric door openers, a distinction can be made between two types, i.e.,A distinction is made between a normally open (NO) version and a normally closed (NC) version. In the normally open version, the locking mechanism is switched from the locked state to the unlocked state by energizing the actuator. In the normally closed version, the locking mechanism is switched from the unlocked state to the locked state by energizing the actuator.

[0003] From DE 10 2017 202 376 B3, a generic electrically switchable locking device for a door system is known, which is used in particular as a door opener. The electrically switchable locking device comprises a housing, a door opener latch interacting with a lock latch and movable between a closed and an open position, an electrically actuated actuator, and a locking arrangement arranged between the door opener latch and the actuator, which the actuator switches between a locked state and a release state via a slide. In the closed position, the door opener latch is locked against movement into the open position by the locking arrangement, and in the release state of the locking arrangement, it is released for movement into the open position.The locking arrangement within the housing comprises at least two balls linearly movable together in a guide as locking elements and a locking axis guided in a through-opening. The actuator moves this axis between a locking position, corresponding to the locked state of the locking arrangement, and a release position, also corresponding to the released state of the locking arrangement. The guide for the at least two balls runs between the door opener latch and the locking axis and opens into the through-opening of the locking axis. In the locked position, the locking axis blocks the linear movement of the balls and the movement of the door opener latch, while in the release position, it releases them.

[0004] The invention is based on the objective of providing an electrically switchable locking device for a door system and a corresponding door system with such an electrically switchable locking device, which has a robust mechanical construction that can be opened with low friction and minimal effort even under preload and is protected against accidental unlocking caused by oscillations and / or vibrations.

[0005] This problem is solved by the features of the electrically switchable locking device for a door system according to claim 1 and by the features of the door system according to claim 20.

[0006] Advantageous embodiments and further developments of the invention are specified in the remaining claims.

[0007] To specify a robust mechanical construction which can be opened with low friction and minimal effort even under preload and is protected against accidental unlocking caused by oscillations and / or vibrations, the locking arrangement includes a damping device with at least one elastic damping element which dampens mechanical oscillations and / or vibrations transmissible to the locking axis.

[0008] Furthermore, a door system is proposed which includes at least one door leaf and an electrically switchable holding device which is used as a door opener.

[0009] The design of the at least one locking element as a ball ensures that the locking device can be easily opened both in a panic function and with a preload. The damping device prevents periodic and / or non-periodic vibrations, or linear and / or non-linear vibrations from the environment, from being transmitted to the locking axis via its bearings when the locking assembly is locked. This advantageously prevents the locking axis from moving in the unlocking direction due to mechanical vibrations and / or oscillations, thus preventing the at least one ball as a locking element from unintentionally releasing the door opener latch.

[0010] Furthermore, embodiments of the invention provide a robust mechanical and impact-resistant construction. Additionally, the design of the at least one locking element as a ball guided in a guide enables a small design of the locking device, which can also be easily integrated into the leaf or frame of the corresponding door leaf.

[0011] In an advantageous embodiment of the locking device, the at least one elastic damping element can be arranged axially at at least one end of the locking axis between the locking axis and a receptacle of the locking axis. The at least one elastic damping element can, for example, be arranged between the locking axis and the slide and / or between the locking axis and a first anti-rotation device. This advantageously reduces or completely prevents the transmission of mechanical oscillations and / or vibrations via the slide and / or the first anti-rotation device.

[0012] In a further advantageous embodiment of the locking device, the locking shaft can have a smaller diameter at its ends, onto which the at least one damping element can be slid. This allows for easy installation of the at least one damping element before the locking shaft is installed. The at least one damping element can, for example, be designed as a round or square perforated disc. Preferably, the at least one damping element is made of an elastomer or rubber or another suitable elastic material.

[0013] In a further advantageous embodiment of the locking device, the locking arrangement can have an anti-jam mechanism with a spring-loaded sliding element arranged parallel to the locking axis. This sliding element has at least one recess into which the at least one ball enters when the locking arrangement is released and acted upon by the door opener latch. The sliding element is then displaced against the force of a return spring. When the door opener latch is released, the sliding element moves the at least one ball and the door opener latch back into the closed position. The force of the return spring, which moves the at least one ball away from the locking axis via the sliding element when the door opener latch is released, can at least hinder, or ideally completely prevent, any jamming of the locking device that occurs between the at least one ball and the locking axis.Furthermore, the recess can have a ramp along which the at least one ball enters the recess. Here, the at least one ball can displace the sliding element perpendicular to the direction of its linear movement. The recess can also limit the linear movement of the at least one ball. The ramp facilitates the ball's entry into the recess of the sliding element and defines the length of the sliding element's travel path until the at least one ball reaches a stop at the bottom of the recess.

[0014] In a further advantageous embodiment of the locking device, the at least one ball can roll along a guide contour of the door opener latch and along the guide during linear movement. The point-like contact points between the at least one ball and the guide, as well as the guide contour of the door opener latch, result in only minimal friction during the released opening movement.

[0015] In a further advantageous embodiment of the locking device, the locking axis can have at least one first recess on its circumference, which can align with the guide when the locking arrangement is released. The at least one ball can be at least partially received by this first recess. The first recess is preferably rounded to allow for the lowest possible frictional rolling motion of the ball. Furthermore, the locking axis can have at least one first blocking area on its circumference, which, when the locking arrangement is locked, can at least partially cover the guide and block the ball.

[0016] In a further advantageous embodiment of the locking device, the door opener latch can be designed as a rotary bolt and mounted in the housing so as to be rotatable about a pivot axis. In this configuration, the door opener latch can be actuated by the lock latch against the force of the return spring of the sliding element of the anti-jam device.

[0017] In a further advantageous embodiment of the locking device, the guide can be arranged in the housing such that the center point of the at least one ball is located above the axis of rotation of the door opener latch, which is designed as a rotary bolt. This results in improved leverage, which advantageously further reduces the force required to move the door opener latch from the closed to the open position.

[0018] In a further advantageous embodiment of the locking device, the guide contour of the door opener latch can have at least one additional recess which can at least partially receive the at least one ball in the closed position of the door opener latch. The additional recess is preferably rounded to allow for the smoothest possible rolling motion of the at least one ball. When the door opener latch is designed as a rotary latch, the recess of the guide contour can be arranged such that a contact area of ​​the at least one ball in the recess is located above the axis of rotation of the door opener latch designed as a rotary latch.This allows the guide contour, when the door opener latch is actuated by the lock latch, to bear against the at least one ball in the locked position. This ball is supported against the blocking area of ​​the locking axis and against the guide in the housing, thus blocking the movement of the door opener latch into the open position. This arrangement of the recess in the guide contour of the rotary bolt advantageously distributes the supporting force acting on the at least one ball, so that a significant portion of the supporting force acts on the housing and not on the blocking area of ​​the locking axis.In the release state of the locking arrangement, the guide contour can roll on the at least one ball when the door opener latch is actuated by the lock latch, so that the door opener latch can move into the open position and the at least one ball can move in the direction of the locking axis and sliding element.

[0019] In a further advantageous embodiment of the locking device, the guide can be designed as a through-opening in the housing, the dimensions of which are adapted to the diameter of the at least one ball. The use of only one ball, guided by a single guide between the door opener latch and the locking axis, results in a particularly compact design of the locking device.

[0020] In a further advantageous embodiment of the locking device, the locking arrangement can have two guides in each of which at least one ball can be guided for linear movement and rotation. The guides can open into the through-opening of the locking axis at a predefinable distance. The through-opening can have two first recesses and two first blocking areas whose axial distance corresponds to the distance between the guides. The sliding element has two recesses for the at least one ball guided in the respective guide. By using two balls, each guided by a guide between the door opener latch and the locking axis, the support and guidance of the door opener latch can be advantageously improved. Furthermore, this results in improved force transmission with a compact design of the locking device.

[0021] In a further advantageous embodiment of the locking device, two balls can be linearly movably grouped together in at least one guide. The door opener latch, actuated by the lock bolt, can cause the two balls to move linearly when moving into the open position. During this movement, a first ball can roll on a guide contour of the door opener latch and on a second ball. The second ball can enter a corresponding recess in the sliding element and move the sliding element against the force of the return spring. When the door opener latch is released, the sliding element can move both balls and the door opener latch back into the closed position. By using two balls guided in a common guide between the door opener latch and the locking axis, larger distances can be bridged.The use of two pairs of balls in two guides can advantageously improve the support and guidance of the door opener latch. Naturally, more than two balls can also be arranged in a single guide. The point-like contact points between the first ball and the guide contour of the door opener latch, and between the first and second balls, result in minimal friction during the released opening movement of the door opener latch. The balls can have the same diameter or different diameters. For example, the first ball can have a larger diameter than the second. Due to the different diameters of the two balls, the smaller second ball can be guided in a section of a stepped opening with a smaller diameter than the larger first ball. This reduces the required installation space.Furthermore, the larger diameter of the first ball allows for the optimization and improvement of the guidance and support of the door opener latch's guide contour on the first ball, enabling it to be adapted to the effective support force. The smaller diameter of the second ball allows for smaller dimensions of at least one recess and at least one blocking area on the locking axis while maintaining the same functionality. Balls with the same diameter facilitate better force transmission.

[0022] In a further advantageous embodiment of the locking device, the locking axis can be designed to selectively switch the locking arrangement between closed-circuit and open-circuit versions and can have at least one second blocking area on its circumference, which can have a circumferential distance of 180° to the at least one first blocking area, and at least one second recess, which can have a distance of 180° to the at least one first recess.

[0023] In a first rotational position, the locking axis can define the normally closed (NC) configuration for the locking arrangement, which corresponds to the unlocked state when the electric actuator is de-energized. In a second rotational position rotated by 180°, the locking axis can define the normally open (NO) configuration for the locking arrangement, which corresponds to the unlocked state when the electric actuator is energized. Furthermore, the at least one first locking area can be positioned at the level of the at least one second recess, and the at least one second locking area can be positioned at the level of the at least one first recess.

[0024] This design allows for easy switching between closed-circuit and open-circuit operation by simply removing an axis lock and rotating the locking axis by 180°. The axis lock can then be reinserted, interacting with the first free end of the locking axis to block any rotational movement of the locking axis.

[0025] Exemplary embodiments of the invention are explained in more detail below with reference to the accompanying drawings. In the drawings, identical reference numerals denote components or elements that perform the same or analogous functions.

[0026] This shows: Fig. 1 a schematic perspective view of an embodiment of an electrically switchable holding device according to the invention for a door system, Fig. 2 a schematic side view of the holding device made of Fig. 1, Fig. 3 a schematic perspective view of the holding device made of Figs. 1 and 2 without housing and cover with the locking device in the locked state, Fig. 4 a schematic top view of the locking device made of Fig. 3 , Fig. 5 a schematic side view of the holding device made of Figs. 3 and 4 , Fig. 6 a schematic sectional view of an embodiment of a locking axis of the holding device made of Figs. 3 to 5 , Fig. 7 a schematic sectional view of the holding device made of Fig. 2 along the section line AA with a door opener latch in the closed position and a locking arrangement in the locked state, Fig. 8 a schematic sectional view of the holding device made of Fig. 2 along the intersection line AA with the door opener latch in the open position and the locking arrangement in the release state,

[0027] As from Figs. 1 to 8As can be seen, exemplary embodiments of an electrically switchable locking device 3 according to the invention for a door system each comprise a housing 7, a door opener latch 11 interacting with a lock latch and movable between a closed position and an open position, an electrically actuated actuator 30, and a locking arrangement 20 arranged between the door opener latch 11 and the actuator 30, which the actuator 30 switches between a locked state and a released state. In the closed position, the door opener latch 11 is locked against movement into the open position by the locking arrangement 20, and in the released state of the locking arrangement 20, it is released for movement into the open position.The locking arrangement 20 comprises, within the housing 7, at least one ball 22A, 22B, which is linearly movable in a guide 28 and serves as the locking element 22, and a locking axis 24 guided in a through-opening 26.1. The actuator 30 moves the locking axis 24 via a slide 29 between a locking position, corresponding to the locked state of the locking arrangement 20, and a release position, also corresponding to the release state of the locking arrangement 20. The guide 28 of the at least one ball 22A, 22B runs between the door opener latch 11 and the locking axis 24 and opens into the through-opening 26.1 of the locking axis 24. In the locking position, the locking axis 24 blocks the linear movement of the at least one ball 22A, 22B and the movement of the door opener latch 11, and in the release position, it releases them.

[0028] According to the invention, the locking arrangement 20 comprises a damping device 50 with at least one elastic damping element 52, which dampens mechanical oscillations and / or vibrations that can be transmitted to the locking axis 24.

[0029] As can be seen from Figures 3 to 5, the displacement of the locking axis 24 is specified such that the at least one first blocking area 24.2A covers between 20% and 50% of the clear width of the guide or the diameter of the at least one ball 22A, 22B in the locked position. In the illustrated embodiment, the at least one first blocking area 24.2A covers approximately 50% of the clear width of the guide 28 or the diameter of the at least one ball 22A, 22B in the locked position. Of course, a different percentage overlap in the range between 20% and 50% can also be specified to prevent unintentional release of the movement of the door opener latch 11 from the closed to the open position. The selected displacement is a compromise between security and the required drive force of the actuator 30, since larger actuators 30 are required to implement a longer displacement.

[0030] As from Figs. 4 to 6As can be seen, the at least one elastic damping element 52 is arranged axially at at least one end of the locking axis 24 between the locking axis 24 and a receptacle of the locking axis 24. In the illustrated embodiment, an elastic damping element 52 is arranged at one end of the locking axis 24 between the locking axis 24 and the slide 29. This allows mechanical oscillations, impacts, and / or vibrations transmitted to the locking axis 24 via the receptacles to be dampened or reduced. The elastic damping element, which is made, for example, of an elastomer, rubber, or another suitable elastic material, is able to dampen the occurring mechanical oscillations, impacts, and / or vibrations, thus advantageously preventing unwanted movement of the locking axis 24 in the unlocking direction.In an alternative embodiment not shown, an elastic damping element 52 is additionally or alternatively arranged between the locking axis 24 and a first anti-rotation device 26.2, i.e., at the other end of the locking axis 24. As shown in particular in . Fig. 6 As can be seen, the locking axis 24 has a smaller diameter at its ends, onto which the at least one damping element 52 is pushed. In the illustrated embodiment, the damping element 52 is designed as a round perforated disc. Alternatively, the damping element 52 can be designed as a rectangular perforated disc.

[0031] As from Figs. 3 to 8As can be further seen, the locking arrangement 20 in the illustrated embodiment comprises a jamming protection 40 with a spring-loaded sliding element 42 arranged parallel to the locking axis 24, which has at least one recess 44 into which the at least one ball 22A, 22B runs in the release state of the locking arrangement 20 when actuated by the door opener latch 11 and displaces the sliding element 42 against the force of a return spring 46, wherein the sliding element 42 moves the at least one ball 22A, 22B and the door opener latch 11 back into the closed position when the door opener latch 11 is released.

[0032] As from Figs. 3 to 8As can be further seen, the locking arrangement 20 in the illustrated embodiment comprises two guides 28 within the housing 7, in each of which a first ball 22A and a second ball 22B are guided so as to be linearly movable and rotatable. The guides 28 run perpendicular to the through-opening 26.1 of the locking axis 24 and open into the through-opening 26.1 at a predetermined distance. As can be seen in particular from Figs. 7 and 8 As can be seen, the two guides 28 and the through-opening 26.1 are incorporated into an axle guide component 26, which in the illustrated embodiment is designed as part of the housing 7. As can be seen from Figs. 3 to 8 As can be further seen, the spheres 22A, 22B in the illustrated embodiment have the same diameter.

[0033] In an alternative embodiment of the locking device 3 (not shown), the first ball 22A has a larger diameter than the second ball 22B. Due to the different diameters of the two balls 22A and 22B, the smaller second ball 22B can be guided in a section of a stepped through-opening with a smaller diameter than the larger first ball 22A. This reduces the required installation space. Furthermore, the larger diameter of the first ball 22A optimizes and improves the guidance and support of the guide contour 16 of the door opener latch 11 on the first ball 22A and allows it to be adapted to the effective support force. The smaller diameter of the second ball 22B also allows the at least one recess 24.1A, 24.1B and the at least one blocking area 24.2A, 24.2B on the locking axis 24 to be dimensioned smaller while maintaining the same functionality.

[0034] As from Figs. 3 to 6As can be further seen, the sliding element 42 in the illustrated embodiment has two recesses 44, each with a chamfer 45 against which the second ball 22B runs. Here, the two second balls 22B move the sliding element 42 against the force of the return spring 46, which is supported on a spring bearing 47 of the sliding element 42 and a second axial locking element 26.3 of the locking axis 24, perpendicular to the direction of the linear movement of the balls 22A, 22B. Furthermore, the recesses 44 limit the linear movements of the balls 22A, 22B. During the linear movement, the respective first ball 22A rolls on a guide contour 16 of the door opener latch 11, on the guide 28, and on the respective second ball 22B.When the door opener latch 11 is released, the force of the return spring 46 moves the sliding element 42 back to its starting position, thereby moving the two balls 22A, 22B and the door opener latch 11 back into the closed position.

[0035] As from Figs. 3 to 6As can be further seen, the locking axis 24 comprises two rounded first recesses 24.1A and two first blocking areas 24.2A, the axial distance of which corresponds to the distance between the guides 28. In the release state of the locking arrangement 20, the two first recesses 24.1A are each aligned with the corresponding guide 28, so that the first recesses 24.1A can each at least partially receive the corresponding second ball 22B. In the locked state of the locking arrangement 20, the two first blocking areas 24.2A each block the corresponding guide 28, so that the second balls 22B cannot be received by the corresponding first recesses 24.1A of the locking axis.

[0036] As from Figs. 7 and 8As can be further seen, the door opener latch 11 in the illustrated embodiment is designed as a rotary bolt 13, which is rotatably mounted in the housing 7 about a pivot axis 15. The pivot axis 15 is mounted in corresponding guides (not shown) in the housing 7. The door opener latch 11 is actuated by the lock latch (not shown) against the force of the return spring 46 of the sliding element 42 of the anti-jam device 40.

[0037] The two guides 28 are arranged in the housing 7 or axis guide component 26 such that the centers of the balls 22A, 22B are located above the axis of rotation 15 of the door opener latch 11, which is designed as a rotary bolt 13. As shown from Figs. 7 and 8As can be further seen, the guide contour 16 of the door opener latch 11 has at least one recess 16.1 which at least partially receives the first balls 22A in the closed position of the door opener latch 11. The recess 16.1 of the guide contour 16 is arranged on the rotary bolt 13 such that contact areas of the second balls 22B in the recess 16.1 are located above the axis of rotation 15 of the rotary bolt 13. As can be seen from Fig. 7 As can be further seen, in the locked state of the locking arrangement 20, the guide contour 16 rests on the first balls 22A when the door opener latch 11 is actuated by the lock latch. These balls are supported via the second balls 22B on the blocking areas 24.2A, 24.2B of the locking axis 24 and on the guide 28 in the housing 7, thus blocking the movement of the door opener latch 11 into the open position. As can be seen from Fig. 8As can be further seen, in the release state of the locking arrangement 20, the guide contour 16 rolls on the first balls 22A when the door opener latch 11 is actuated by the lock latch, so that the door opener latch 11 executes the movement into the open position and the balls 22A, 22B move in the direction of the locking axis 24 and sliding element 42.

[0038] In the illustrated embodiment, the locking axis 24 is designed for selective switching of the locking arrangement 20 between a fail-safe and a fail-safe operation. Therefore, the locking axis 24 has two secondary locking areas 24.2B on its circumference, which are spaced 180° apart from the two primary locking areas 24.2A, and two secondary recesses 24.1B, which are spaced 180° apart from the two primary recesses 24.1A. Furthermore, the two primary locking areas 24.2A are each located at the same level as the two secondary recesses 24.1B, and the two secondary locking areas 24.2B are each located at the same level as the two primary recesses 24.1A. As shown in the figure... Figs. 3 to 5As can be further seen, in the second rotary position shown, the locking axis 24 defines the normally open configuration for the locking arrangement 20, which assumes the unlocked state when the electric actuator 30 is energized. This means that the locking arrangement 20 is in the locked state when the actuator is de-energized. In a first rotary position (not shown), rotated by 180°, the locking axis 24 defines the normally closed configuration for the locking arrangement 20, which assumes the unlocked state when the electric actuator 30 is de-energized.

[0039] As from Figs. 3 to 6As can be further seen, a first axis lock 26.2 is inserted into the through-opening 26.1 and acts on the first free end of the locking axis 24. The first axis lock 26.2 secures the locking axis 24 against rotation and allows axial movement of the locking axis 24. In addition, a second axis lock 26.3, which is screwed to the housing 7, fixes the first axis lock 26.2 in the through-opening 26.1. At the second free end, the locking axis 24 is rotatably guided in the slide 29, which can be axially actuated by the electrically operated actuator 30. In the illustrated embodiment, the slide 29 is placed radially from above onto the second free end of the locking axis 24, the second free end of the locking axis 24 having a circumferential groove into which a wall of a receptacle 29.1 in the slide 30 engages and onto which the elastic sealing element 52 is pushed.The electrically actuated actuator 30 acts against the force of a compression spring 34 on the slide 29 and is designed as an electromechanical solenoid 32. Alternatively, the actuator can be designed as a piezoelectric actuator. In the illustrated embodiment of the locking arrangement 20, the locking axis 24, in the first rotational position shown, determines the operating current configuration for the locking arrangement 20. When the solenoid 32 of the actuator 30 is energized via a terminal 36, the slide 29 is attracted against the force of the compression spring 34 and moved towards the solenoid 32. This causes the slide 30 to disengage the locking axis 24 from its position. Fig. 3, 4 , 5 and 7 shown locking position in the Fig. 8 Release position shown.

[0040] If the locking device 3 or the locking assembly 20 is to be operated in the fail-safe version, the second axis lock 26.3 is released and the first axis lock 26.2 is removed from the through-opening 26.1. Then the locking axis 24 is rotated 180°. Subsequently, the first axis lock 26.2 is reinserted into the through-opening 26.1 and attached to the first end of the locking axis 24. The second axis lock 26.3 is then screwed back onto the housing 7. Since the positions of the recesses and blocking areas are now reversed, the locking assembly 20 is in the locked state when the actuator 30 is unenergized and in the unlocked state when the actuator 30 is energized.

[0041] In an alternative embodiment of the locking device 3 (not shown), only one guide 28, designed as a through-opening 28.1, is arranged in the housing 7, in which only one ball 22A is guided linearly and rotatably as a locking element 22. The use of only one guide 28 between the door opener latch 11 and the locking axis 24, in conjunction with only one ball 22A, results in a particularly compact design of the locking device 3.

[0042] In another embodiment of the locking device 3 (not shown), only one guide 28, designed as a through-opening 28.1, is arranged in the housing 7, in which, however, two balls 22A, 22B are guided linearly and rotatably as locking elements 22. By using only one guide 28 between the door opener latch 11 and the locking axis 24 in conjunction with two balls 22A, 22B, larger distances can be bridged.

[0043] In another embodiment of the locking device 3 (not shown), analogous to the described embodiment, two guides 28 designed as through-openings 28.1 are arranged in the housing 7, in each of which only one ball 22A is guided linearly and rotatably as a locking element 22. By using two balls 22A, each guided by a guide 28 between the door opener latch 11 and the locking axis 24, the support and guidance of the door opener latch 11 can be advantageously improved. Furthermore, improved force transmission is achieved with a compact design of the locking device 3.

[0044] Embodiments of the electrically switchable locking device 3 according to the invention are preferably used as door openers in a door system with at least one door leaf. Reference symbol list

[0045] 1. Faceplate 2. Recess (lock bolt) 3. Holding device 5. Recess 7. Housing 9. Cover 11. Door opener latch 13. Rotary bolt 15. Pivot axis 16. Guide contour 16.1. Recess 20. Locking arrangement 22. Locking element 22A. First ball 22B. Second ball 24. Locking axis (adjusting axis) 24.1A, 24.1B. Recess 24.2A. 24.2B Blocking area 26 Axis guide component 26.1 Through opening 26.2 First axis lock 26.3 Second axis lock 28 Guide 28.1 Through opening 29 Slider 29.1 Receptacle 30 Actuator 32 Electric lifting magnet 34 Compression spring 36 Terminal block 40 Jam protection 42 Sliding element 44 Recess 45 Lead-in chamfer 46 Return spring 47 Spring assembly 50 Damping device 52 Damping element

Claims

1. Electrically switchable locking device (3) for a door system, comprising a housing (7), a door opener latch (11) interacting with a lock latch and movable between a closed position and an open position, an electrically actuated actuator (30), and a locking arrangement (20) arranged between the door opener latch (11) and the actuator (30), which the actuator (30) switches between a locked state and a release state, wherein the door opener latch (11) is locked against movement into the open position in the locked state of the locking arrangement (20) and is released for movement into the open position in the release state of the locking arrangement (20), wherein the locking arrangement (20) within the housing (7) comprises at least one ball (22A, 22B) linearly movable in a guide (28) as a locking element (22) and a Passage opening (26.1) a guided locking axis (24) which the actuator (30) moves via a slide (29) between a locking position, which corresponds to the locking state of the locking arrangement (20), and a release position, which corresponds to the release state of the locking arrangement (20), wherein the guide (28) of the at least one ball (22A, 22B) runs between the door opener latch (11) and the locking axis (24) and opens into the through-opening (26.1) of the locking axis (24), wherein the locking axis (24) blocks the linear movement of the at least one ball (22A, 22B) and the movement of the door opener latch (11) in the locking position and releases it in the release position. characterized by that the locking arrangement (20) comprises a damping device (50) with at least one elastic damping element (52) which dampens mechanical oscillations and / or vibrations transmissible to the locking axis (24).

2. Holding device (3) according to claim 1, characterized by that the at least one elastic damping element (52) is arranged axially between the locking axis (24) and a receptacle of the locking axis (24) at at least one end of the locking axis (24).

3. Holding device (3) according to claim 2, characterized by that that at least one elastic damping element (52) is arranged between the locking axis (24) and the slide (29) and / or between the locking axis and a first anti-rotation device (26.2).

4. Holding device (3) according to one of the preceding claims, characterized by that the locking axis (24) has a smaller diameter at its ends, onto which the at least one damping element (52) is pushed.

5. Holding device (3) according to one of the preceding claims, characterized by thatthat at least one damping element (52) is designed as a round and / or square perforated disc.

6. Holding device (3) according to one of the preceding claims, characterized by that The locking arrangement (20) comprises a jamming protection device (40) with a spring-loaded sliding element (42) arranged parallel to the locking axis (24), which has at least one recess (44) into which the at least one ball (22A, 22B) enters when the locking arrangement is released by the door opener latch (11) and displaces the sliding element (42) against the force of a return spring (46), wherein the sliding element (42) moves the at least one ball (22A, 22B) and the door opener latch (11) back into the closed position when the door opener latch (11) is released.

7. Holding device (3) according to claim 6, characterized by thatthe at least one recess (44) has a ramp (45) on which the at least one ball (22A, 22B) runs, wherein the at least one ball (22A, 22B) displaces the sliding element (42) perpendicular to the direction of the linear movement of the at least one ball (22A, 22B), the at least one recess (44) limits the linear movement of the at least one ball (22A, 22B).

8. Holding device (3) according to one of the preceding claims, characterized by that which at least one ball (22A, 22B) rolls on a guide contour (16) of the door opener latch (11) and on the guide (28) during linear movement.

9. Holding device (3) according to one of the preceding claims, characterized by thatthe locking axis (24) has at least one first recess (24.1 A) on its circumference, which is aligned with the guide (28) in the release state of the locking arrangement (20), wherein the at least one ball (22A, 22B) can be received at least partially by the at least one first recess (24.1 A), and has at least one first blocking area (24.2A) which blocks the guide (28) in the locking state of the locking arrangement (20).

10. Holding device (3) according to one of the preceding claims, characterized by that the door opener latch (11) is designed as a rotary latch (13) and is rotatably mounted in the housing (7) about a pivot axis (15).

11. Holding device (3) according to claim 10, characterized by that the guide (28) is arranged in the housing (7) such that a center point of the at least one ball (22A, 22B) is arranged above the axis of rotation (15) of the door opener latch (11) designed as a rotary latch (13).

12. Holding device (3) according to one of the preceding claims, characterized by that the guide contour (16) of the door opener latch (11) has at least one recess (16.1) which at least partially receives the first ball (22A) in the closed position of the door opener latch (11).

13. Holding device (3) according to claim 12, characterized by that the recess (16.1) of the guide contour (16) in the door opener latch (11) designed as a rotary latch (13) is arranged such that a contact area of ​​the at least one ball (22A, 22B) is arranged in the recess (16.1) above the axis of rotation (15) of the door opener latch (11) designed as a rotary latch (13).

14. Holding device (3) according to claim 13, characterized by thatIn the locked state of the locking arrangement (20), the guide contour (16) is supported on the at least one ball (22A, 22B) when the door opener latch (11) is acted upon by the lock latch. This ball is supported on the blocking area (24.2A, 24.2B) of the locking axis (24) and on the guide (28) in the housing (7), and blocks the movement of the door opener latch (11) into the open position.

15. Holding device (3) according to one of claims 12 to 14, characterized by that In the release state of the locking arrangement (20), the guide contour (16) rolls on the at least one ball (22A, 22B) when the door opener latch (11) is actuated by the lock latch, so that the door opener latch (11A, 11B) executes the movement into the open position and the at least one ball (22A, 22B) moves in the direction of the locking axis (24) and sliding element (42).

16. Holding device (3) according to one of the preceding claims, characterized by that the guide (28) is designed as a through-opening (28.1) in the housing (7), the dimensions of which are adapted to a diameter of the at least one ball (22A, 22B).

17. Holding device (3) according to one of the preceding claims, characterized by that the locking arrangement (20) has two guides (28) in each of which at least one ball (22A, 22B) is guided linearly movable and rotatable, wherein the guides (28) open into the through-opening (26.1) of the locking axis (24) at a predefinable distance, which has two first recesses (24.1 A) and two first locking areas (24.2A) whose axial distance corresponds to the distance of the guides (28), wherein the sliding element (42) has two recesses (44) for the at least one ball (22A, 22B) guided in the respective guide (28).

18. Holding device (3) according to one of the preceding claims, characterized by thatTwo balls (22A, 22B) are linearly movable together in at least one guide (28), wherein the door opener latch (11) acted upon by the lock latch causes the linear movement of the two balls (22A, 22B) when moving into the open position, in which a first ball (22A) rolls on a guide contour (16) of the door opener latch (11) and on a second ball (22B), wherein the second ball (22B) enters a corresponding recess (44) of the sliding element (42) and displaces the sliding element (42) against the force of the return spring (46), and wherein the sliding element (42) moves the two balls (22A, 22B) and the door opener latch (11) back into the closed position when the door opener latch (11) is released.

19. Holding device (3) according to one of the preceding claims, characterized by thatthe locking axis (24) is designed for selective switching of the locking arrangement (20) between closed-circuit and open-circuit versions and has at least one second blocking area (24.2B) on its circumference, which has a circumferential distance of 180° to the at least one first blocking area (24.2A), and at least one second recess (24.1 B), which has a distance of 180° to the at least one first recess (24.1 A), wherein the locking axis (24) in a first rotational position defines the closed-circuit version for the locking arrangement (20), which assumes the release state in the unenergized state of the electric actuator (30), and in a second rotational position rotated by 180° defines the open-circuit version for the locking arrangement (20), which assumes the release state in the energized state of the electric actuator (30).

20. Door system with at least one door leaf and an electrically switchable holding device (3) which is used as a door opener, characterized by that the electrically switchable locking device (3) is designed according to one of claims 1 to 19.