EP3575518B1 - Electrically actuated closing device for a door assembly - Google Patents

Description

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.

Door systems with at least one door leaf and an electrically switchable locking device which is used as a door opener are known from the prior art. Such an electrically switchable locking device usually comprises a housing, a door opener latch which interacts with a lock latch and which can be moved between a closed position and an open position, an electrically actuatable actuator and a locking arrangement which is arranged between the door opener latch and the actuator and which switches the actuator between a locking state and switches to an enable state. The door opener latch is locked in the closed position in the locked state of the locking arrangement against movement into the open position. In the released state of the locking arrangement, the door opener latch is released for movement into the open position. In the case of electric door openers, there are two types, i.e. A distinction can be made between an operating current version and a closed circuit version. In the working current version, the locking arrangement is switched from the locking state to the release state by energizing the actuator. In the closed-circuit version, the locking arrangement is switched from the release state to the locking state by energizing the actuator.

From the 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 which interacts with a lock latch and which can be moved between a closed position and an open position, an electrically actuatable actuator and a locking arrangement arranged between the door opener latch and the actuator, which the actuator can switch between a locking state and a slider switches to an enable state. The door opener latch is in the closed position locked in the locked state of the locking arrangement against movement into the open position and released in the released state of the locking arrangement for movement into the open position. In this case, the locking arrangement within the housing comprises at least two balls that are linearly movably combined in a guide as locking elements and a locking axis guided in a through opening, which the actuator shifts between a locking position, which corresponds to the locking state of the locking arrangement, and a release position, which corresponds to the release state of the locking arrangement . The guide of 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, the locking axis blocking the linear movement of the balls and the movement of the door opening latch in the locking position and releasing them in the release position.

The invention is based on the object of specifying an electrically switchable locking device for a door system as well as a corresponding door system with such an electrically switchable locking device, which has a robust mechanical construction, which can be opened with little friction and with little effort even under preload and against vibration and / or accidental unlocking caused by vibrations is protected.

This object is achieved 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 19

Advantageous configurations and developments of the invention are specified in the remaining claims.

In order to provide a robust mechanical construction which can be opened with low friction and with little effort even under preload and which is protected against inadvertent unlocking caused by oscillations and / or vibrations, the locking arrangement comprises a damping device with at least one elastic damping element which can be transferred to the locking axis dampens mechanical oscillations and / or vibrations.

In addition, a door system is proposed which comprises at least one door leaf and such an electrically switchable locking device which is used as a door opener.

The design of the at least one locking element as a ball means that the locking device can be easily opened both in a panic function and with a preload, the damping device preventing periodic and / or non-periodic vibrations or linear and / or non-linear vibrations from the environment are transmitted to the locking axis, for example via the mounting of the locking axis. This can advantageously prevent the locking axis from moving in the unlocking direction due to the mechanical oscillations and / or vibrations and the at least one ball as the locking element inadvertently releasing the door opener latch.

In addition, embodiments of the invention provide a robust mechanical and impact-resistant construction. Furthermore, the execution 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 the frame of the corresponding door leaf.

According to the invention, the at least one elastic damping element is arranged on at least one end of the locking axis axially between the locking axis and a receptacle of the locking axis.

Here, the at least one elastic damping element can be arranged, for example, between the locking axis and the slide and / or between the locking axis and a first anti-rotation device. As a result, a transmission of mechanical oscillations and / or vibrations via the slide and / or the first anti-rotation device can advantageously be at least reduced or completely prevented.

In a further advantageous embodiment of the locking device, the locking axis can have a smaller diameter at its ends, onto which the at least one damping element can be pushed. This enables simple assembly of the at least one damping element before the locking axis is installed. The at least one damping element can be designed, for example, as a round or angular perforated disk. The at least one damping element is preferably produced from an elastomer or rubber or another suitable elastic material.

In a further advantageous embodiment of the locking device, the locking arrangement can have an anti-jamming device with a locking device arranged parallel to the locking axis have a spring-loaded sliding element which has at least one recess into which the at least one ball runs in the release state of the locking arrangement when the door opener latch is acted upon and moves the sliding element against the force of a return spring, the sliding element when the door opener latch is released the at least one ball and the door opener latch moved back to the closed position. Due to 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, the anti-jamming device can at least make it more difficult or ideally completely prevent the locking device from jamming, which occurs between the at least one ball and the locking axis. In addition, the recess can have a run-on bevel at which the at least one ball runs into the recess. Here, the at least one ball can move the sliding element perpendicular to the direction of the linear movement of the at least one ball. In addition, the recess can limit the linear movement of the at least one ball. The run-up bevel facilitates the entry of the ball into the recess of the sliding element and specifies a length of the displacement path of the sliding element up to the stop of the at least one ball on the bottom of the recess.

In a further advantageous embodiment of the locking device, the at least one ball can roll on a guide contour of the door opener latch and on the guide during the linear movement. Due to the point-like contact points between the at least one ball and the guide and the guide contour of the door opener latch, there is only little friction during the released opening movement.

In a further advantageous embodiment of the locking device, the locking axis can have at least one first recess on the circumference, which can be aligned with the guide when the locking arrangement is released. Here, the at least one ball can be at least partially received by the at least one first recess. The at least one first depression is preferably rounded in order to enable a rolling movement of the at least one ball with as little friction as possible. Furthermore, the locking axis can have at least one first blocking area on the circumference, which in the locked state of the locking arrangement can at least partially cover the guide and block the at least one ball.

In a further advantageous embodiment of the locking device, the door opener latch can be designed as a rotary bolt and can be rotatably mounted in the housing about an axis of rotation. Here, the door opener latch can be acted upon by the lock latch against the force of the return spring of the sliding element of the anti-jamming device.

In a further advantageous embodiment of the locking device, the guide can be arranged in the housing such that a center point of the at least one ball is arranged above the axis of rotation of the door opener latch designed as a rotary bolt. This results in an improved leverage effect, as a result of which the force to be applied to transfer the door opener latch from the closed position to the open position can advantageously be further reduced.

In a further advantageous embodiment of the locking device, the guide contour of the door opener latch can have at least one further recess which can at least partially accommodate the at least one ball in the closed position of the door opener latch. The further recess is preferably designed to be rounded in order to enable a rolling movement of the at least one ball with as little friction as possible. When the door opener latch is designed as a rotary bolt, the recess of the guide contour can be arranged such that a contact area of the at least one ball is arranged in the recess above the axis of rotation of the door opener latch designed as a rotary bolt. As a result, in the locked state of the locking arrangement, the guide contour can be supported on the at least one ball when the lock latch is applied to the door opener latch, which ball is supported on the blocking area of the locking axis and on the guide in the housing and can block the movement of the door opener latch into the open position. With this arrangement of the recess in the guide contour of the rotary bolt, the supporting force acting on the at least one ball can be advantageously divided so that a substantial portion of the supporting force acts on the housing and not on the blocking area of the locking axis. In the released state of the locking arrangement, the guide contour can roll on the at least one ball when the door opener latch is acted on 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.

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 a diameter of the at least one ball. The use of only one ball, which is guided through a single guide between the door opener latch and the locking axis, results in a particularly compact design of the locking device.

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 in a linearly movable and rotatable manner. The guides can open at a predeterminable distance into the through opening of the locking axis, which can have two first depressions and two first blocking areas, the axial distance of which corresponds to the distance between the guides, the sliding element having two recesses for the at least one ball guided in the respective guide . By using two balls, which are each guided through a guide between the door opener latch and the locking axis, the support and guidance of the door opener latch can be improved in an advantageous manner. In addition, there is an improved power transmission with a compact design of the locking device.

In a further advantageous embodiment of the locking device, two balls can be combined in at least one guide in a linearly movable manner, whereby the door opener latch acted upon by the lock latch can cause the linear movement of the two balls when moving into the open position, in which a first ball on a guide contour of the door opener latch and on a second ball can roll. The second ball can run into a corresponding recess in the sliding element and move the sliding element against the force of the return spring, the sliding element being able to move the two balls and the door opener latch back into the closed position when the door opener latch is released. By using two balls, which are guided in a common guide between the door opener latch and the locking axis, larger distances can be bridged. By using two pairs of balls in two guides, the support and guidance of the door opener latch can be improved in an advantageous manner. Of course, more than two balls can also be arranged in a guide. Due to the point-shaped contact points between the first ball and the guide contour of the door opener latch and between the first ball and the second ball, there is only little 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 ball. Due to the different diameters of the two balls, the smaller second ball can be guided in a smaller-diameter section of a stepped through opening than the larger first ball. As a result, the space required can be reduced. In addition, due to the larger diameter of the first ball, the guidance and support of the guide contour of the door opener latch on the first ball can be optimized or improved the effective support force can be adjusted. Due to the smaller diameter of the second ball, the at least one recess and the at least one blocking area on the locking axis can also be dimensioned smaller with the same functionality. Balls with the same diameter enable better power transmission.

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

In a first rotary position, the locking axis can define the closed-circuit design for the locking arrangement, which assumes the release state in the de-energized state of the electric actuator. In a second rotational position rotated by 180 °, the locking axis can determine the type of operating current for the locking arrangement, which assumes the release state when the electric actuator is energized. In addition, the at least one first blocking area can be arranged at the level of the at least one second depression and the at least one second blocking area can be arranged at the level of the at least one first depression.

With this embodiment, the change between the closed-circuit type and the open-circuit type can be made simply by removing an axle lock and rotating the locking axle by 180 °. The axle lock can then be reinserted and interact with the first free end of the locking axle in such a way that a rotational movement of the locking axle is blocked.

In the following, exemplary embodiments of the invention are explained in greater detail with the aid of drawings. In the drawings, the same reference symbols designate components or elements that perform the same or analogous functions.

Fig. 1

eine schematische perspektivische Darstellung eines Ausführungsbeispiels einer erfindungsgemäßen elektrisch schaltbaren Zuhaltevorrichtung für eine Türanlage,

Fig. 2

eine schematische Seitenansicht der Zuhaltevorrichtung aus Fig. 1,

Fig. 3

eine schematische perspektivische Darstellung der Zuhaltevorrichtung aus Fig. 1 und 2 ohne Gehäuse und Deckel mit der Verriegelungsvorrichtung im Verriegelungszustand,

Fig. 4

eine schematische Draufsicht auf die Zuhaltevorrichtung aus Fig. 3,

Fig. 5

eine schematische Seitenansicht der Zuhaltevorrichtung aus Fig. 3 und 4,

Fig. 6

eine schematische Schnittdarstellung eines Ausführungsbeispiels einer Verriegelungsachse der Zuhaltevorrichtung aus Fig. 3 bis 5,

Fig. 7

eine schematische Schnittdarstellung der Zuhaltevorrichtung aus Fig. 2 entlang der Schnittlinie A-A mit einer Türöffnerfalle in der Geschlossenstellung und einer Verriegelungsanordnung im Verriegelungszustand,

Fig. 8

eine schematische Schnittdarstellung der Zuhaltevorrichtung aus Fig. 2 entlang der Schnittlinie A-A mit der Türöffnerfalle in der Offenstellung und der Verriegelungsanordnung im Freigabezustand,

Show:

Fig. 1

a schematic perspective illustration of an embodiment of an electrically switchable locking device according to the invention for a door system,

Fig. 2

a schematic side view of the locking device from Fig. 1 ,

Fig. 3

a schematic perspective view of the locking device from Figs. 1 and 2 without housing and cover with the locking device in the locked state,

Fig. 4

a schematic plan view of the locking device from Fig. 3 ,

Fig. 5

a schematic side view of the locking device from Figures 3 and 4 ,

Fig. 6

a schematic sectional view of an embodiment of a locking axis of the locking device Figs. 3 to 5 ,

Fig. 7

a schematic sectional view of the locking device 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 locking device Fig. 2 along the section line AA with the door opener latch in the open position and the locking arrangement in the released state,

How out Figs. 1 to 8 As can be seen, embodiments of an electrically switchable locking device 3 according to the invention for a door system each include a housing 7, a door opener latch 11 which interacts with a lock latch and which can be moved between a closed position and an open position, an electrically actuatable actuator 30 and one between the door opener latch 11 and the Actuator 30 arranged locking arrangement 20, which the actuator 30 switches between a locking state and a release state. The door opener latch 11 is locked in the closed position in the locked state of the locking arrangement 20 against movement into the open position and released in the released state of the locking arrangement 20 for movement into the open position. The locking arrangement 20 comprises within the housing 7 at least one ball 22A, 22B mounted in a linearly moveable manner in a guide 28 as a locking element 22 and one in a Locking axis 24 guided through opening 26.1, which the actuator 30 moves via a slide 29 between a locking position, which corresponds to the locked state of the locking arrangement 20, and a release position, which corresponds to the released 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, the locking axis 24 in the locking position the linear movement of the at least one ball 22A, 22B and the movement of the door opener latch 11 blocked and released in the release position.

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

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

How out Figures 4 to 6 As can be seen, the at least one elastic damping element 52 is arranged on at least one end of the locking axis 24 axially between the locking axis 24 and a receptacle of the locking axis 24. In the illustrated exemplary 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. As a result, mechanical oscillations or impacts and / or vibrations which are transmitted to the locking axis 24 via the receptacles can be damped or reduced. Here, the elastic damping element, which is made, for example, of an elastomer or rubber or another suitable elastic material, is able to absorb the mechanical vibrations or vibrations that occur.

To dampen impacts and / or vibrations, so that an undesired movement of the locking axis 24 in the unlocking direction can be prevented in an advantageous manner. In an alternative exemplary 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, ie at the other end of the locking axis 24. Like in particular from 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 disk. Alternatively, the damping element 52 can be designed as an angular perforated disk.

How out Figures 3 to 8 As can also be seen, the locking arrangement 20 in the illustrated embodiment comprises an anti-jamming 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 in the released state of the locking arrangement 20 when acted upon by the Door opener latch 11 runs in and the sliding element 42 moves against the force of a return spring 46, the sliding element 42 moving 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.

How out Figures 3 to 8 As can also be 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 in a linearly movable and rotatable manner. 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. Like in particular from Figures 7 and 8 As can be seen, the two guides 28 and the through opening 26.1 are introduced into an axle guide component 26 which, in the exemplary embodiment shown, is embodied as part of the housing 7. How out Figures 3 to 8 As can also be seen, the balls 22A, 22B in the illustrated embodiment have the same diameter.

In an alternative exemplary embodiment, not shown, of the locking device 3, the first ball 22A has a larger diameter than the second ball 22B. Due to the different diameters of the two balls 22A, 22B, the smaller second ball 22B can be guided in a smaller-diameter section of a stepped through opening than the larger first ball 22A. As a result, the required installation space can be reduced. In addition, the larger diameter of the first ball 22A, the guidance and support of the guide contour 16 of the door opener latch 11 on the first ball 22A can be optimized or improved and adapted to the effective support force. Due to the smaller diameter of the second ball 22B, the at least one recess 24.1 A, 24.1 B and the at least one blocking area 24.2A, 24.2B on the locking axis 24 can also be dimensioned smaller with the same functionality.

How out Figures 3 to 6 As can also be seen, the sliding element 42 in the illustrated embodiment has two recesses 44, each of which has a run-on bevel 45 at 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 system 47 of the sliding element 42 and a second axis retainer 26.3 of the locking axis 24, perpendicular to the direction of the linear movement of the balls 22A, 22B. In addition, 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 into its starting position, whereby the two balls 22A, 22B and the door opener latch 11 are moved back into the closed position.

How out Figures 3 to 6 As can also be seen, the locking axis 24 comprises two rounded first depressions 24.1 A and two first blocking regions 24.2A, the axial spacing of which corresponds to the spacing of the guides 28. In the released state of the locking arrangement 20, the two first depressions 24.1 A are each aligned with the corresponding guide 28, so that the first depressions 24.1 A can each receive the corresponding second ball 22B at least partially. 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.

How out Figures 7 and 8 As can also be 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 an axis of rotation 15. The axis of rotation 15 is mounted in corresponding axis guides (not shown) in the housing 7. An application of the door opener trap 11 by the The lock latch, not shown, takes place against the force of the return spring 46 of the sliding element 42 of the anti-jamming device 40.

The two guides 28 are arranged in the housing 7 or axis guide component 26 in such a way that the center points of the balls 22A, 22B are arranged above the axis of rotation 15 of the door opener latch 11 designed as a rotary bolt 13. How out Figures 7 and 8 As can also be 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. In this case, 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 are arranged in the recess 16.1 above the axis of rotation 15 of the rotary bolt 13. How out Fig. 7 As can also be seen, the guide contour 16 is supported in the locked state of the locking arrangement 20 when the door opener latch 11 is acted upon by the lock latch on the first balls 22A, which extend over the second balls 22B to the blocking areas 24.2A, 24.2B of the locking axis 24 and on the guide 28 in the housing 7 and block the movement of the door opener latch 11 in the open position. How out Fig. 8 As can also be seen, in the released state of the locking arrangement 20, the guide contour 16 rolls on the first balls 22A when the lock latch strikes the door opener latch 11, so that the door opener latch 11 executes the movement into the open position and the balls 22A, 22B move in the direction Move locking axis 24 and sliding element 42.

In the exemplary embodiment shown, the locking axis 24 is designed for the optional switching of the locking arrangement 20 between the closed-circuit version and the open-circuit version. Therefore, the locking axis 24 has two second blocking areas 24.2B on the circumference, which are circumferentially spaced 180 ° from the two first blocking areas 24.2A, and two second recesses 24.1B which are circumferentially spaced 180 ° from the two first recesses 24.1 A. Furthermore, the two first blocking areas 24.2A are each arranged at the level of the two second depressions 24.1B, and the two second blocking areas 24.2B are each arranged at the level of the two first depressions 24.1A. How out Figs. 3 to 5 As can also be seen, the locking axis 24 in the illustrated second rotational position defines the working current design for the locking arrangement 20, which assumes the release state when the electric actuator 30 is energized. This means that the locking arrangement 20 is in the locking state in the illustrated de-energized state of the actuator. In a not shown The first rotational position rotated by 180 °, the locking axis 24 defines the closed-circuit design for the locking arrangement 20, which assumes the release state in the de-energized state of the electric actuator 30.

How out Figures 3 to 6 As can also be 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 enables an axial movement of the locking axis 24. In addition, a second axis lock 26.3 fixes , which is screwed to the housing 7, the first axle 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 acted upon axially by the electrically actuated actuator 30. In the exemplary embodiment shown, 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 engages 52 is postponed. The electrically actuatable actuator 30 acts against the force of a compression spring 34 on the slide 29 and is designed as an electromechanical lifting magnet 32. Alternatively, the actuator can be designed as a piezoelectric actuator. In the illustrated exemplary embodiment of the locking arrangement 20, the locking axis 24 defines the operating current design for the locking arrangement 20 in the illustrated first rotational position. When the lifting magnet 32 of the actuator 30 is energized via a connection terminal 36, the slide 29 is attracted against the force of the compression spring 34 and moved in the direction of the lifting magnet 32. As a result, the slide 30 moves the locking axis 24 out of the position shown in FIG Fig. 3, 4 , 5 and 7th locked position shown in Fig. 8 Released position shown.

If the locking device 3 or the locking arrangement 20 is to be operated in the closed-circuit version, the second axle lock 26.3 is released and the first axle lock 26.2 is removed from the through opening 26.1. Then the locking axis 24 is rotated 180 °. The first axle lock 26.2 is then inserted again into the through opening 26.1 and pushed onto the first end of the locking axle 24. The second axle lock 26.3 is then screwed back to the housing 7. Since the positions of the depressions and blocking areas are now interchanged, the locking arrangement 20 has the locking state when the actuator 30 is de-energized and the release state when the actuator 30 is energized.

In an alternative embodiment, not shown, of the locking device 3, 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 as a locking element 22 so as to be linearly movable and rotatable. 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.

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 as locking elements 22 are linearly moveable and rotatable. 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.

In a further exemplary embodiment of the locking device 3, not shown, two guides designed as through openings 28.1 are arranged in the housing 7 analogously to the exemplary embodiment described, in each of which only one ball 22A is guided as a locking element 22 in a linearly movable and rotatable manner. By using two balls 22A, which are each guided through 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 improved in an advantageous manner. In addition, an improved power transmission results with a compact design of the locking device 3.

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.

List of reference symbols

1

Faceplate

2

Recess (lock bolt)

3

Locking device

5

Recess

7th

casing

9

cover

11

Door opener trap

13

Quarter-Turn

15th

Axis of rotation

16

Guide contour

16.1

deepening

20th

Locking arrangement

22nd

Locking element

22A

first bullet

22B

second ball

24

Locking axis (positioning axis)

24.1 A, 24.1 B

deepening

24.2A. 24.2B

Blocking area

26th

Axle guide component

26.1

Through opening

26.2

first axle lock

26.3

second axle lock

28

guide

28.1

Through opening

29

Slider

29.1

admission

30th

Actuator

32

electric lifting magnet

34

Compression spring

36

Terminal

40

Anti-jam protection

42

Sliding element

44

Recess

45

Ramp

46

Return spring

47

Spring system

50

Damping device

52

Damping element

Claims (19)

1. Electrically switchable closing device (3) for a door assembly, having a housing (7), a door opener latch (11) which interacts with a lock latch and which is movable between a closed position and an open position, an electrically actuatable actuating drive (30) and a locking arrangement (20) which is arranged between the door opener latch (11) and the actuating drive (30) and which the actuating drive (30) switches between a locking state and a released state, wherein, in the closed position, in the locking state of the locking arrangement (20), the door opener latch (11) is locked against a movement into the open position and, in the released state of the locking arrangement (20), is released for a movement into the open position, wherein the locking arrangement (20) comprises, within the housing (7), at least one ball (22A, 22B), which is mounted in a linearly movable manner in a guide (28), and a locking pin (24) which is guided in a through-opening (26.1) and which the actuating drive (30) displaces 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 released state of the locking arrangement (20), where the guide (28) of the at least one ball (22A, 22B) extends between the door opener latch (11) and the locking pin (24) and opens into the through-opening (26.1) of the locking pin (24), wherein, in the locking position, the locking pin (24) blocks the linear movement of the at least one ball (22A, 22B) and the movement of the door opener latch (11) and releases them in the release position, characterized in that the locking arrangement (20) comprises a damping device (50) with at least one elastic damping element (52) which damps mechanical oscillations and/or vibrations that can be transmitted to the locking pin (24), and wherein the at least one elastic damping element (52) at at least one end of the locking pin (24) is arranged axially between the locking pin (24) and a receptable of the locking pin (24) .
2. Closing device (3) according to Claim 1, characterized in that the at least one elastic damping element (52) is arranged between the locking pin (24) and the slide (29) and/or between the locking pin and a first means of securing against rotation (26.2).
3. Closing device (3) according to either of the preceding claims, characterized in that the locking pin (24) at its ends has a smaller diameter, onto which the at least one damping element (52) is pushed.
4. Closing device (3) according to one of the preceding claims, characterized in that the at least one damping element (52) is designed as a round and/or angled perforated disc.
5. Closing device (3) according to one of the preceding claims, characterized in that the locking arrangement (20) comprises a jamming guard (40) with a spring-loaded sliding element (42) which is arranged parallel to the locking pin (24) and has at least one recess (44) into which, in the released state of the locking arrangement, the at least one ball (22A, 22B) runs, when acted upon by the door opener latch (11), and displaces the sliding element (42) counter to the force of a restoring spring (46), wherein, when the door opener latch (11) is released, the sliding element (42) moves the at least one ball (22A, 22B) and the door opener latch (11) back into the closed position.
6. Closing device (3) according to Claim 5, characterized in that the at least one recess (44) has a starting slope (45) on which the at least one ball (22A, 22B) runs, wherein the at least one ball (22A, 22B) displaces the sliding element (42) perpendicularly to the direction of the linear movement of the at least one ball (22A, 22B), and the at least one recess (44) limits the linear movement of the at least one ball (22A, 22B).
7. Closing device (3) according to one of the preceding claims, characterized in that the at least one ball (22A, 22B) rolls on a guide contour (16) of the door opener latch (11) and on the guide (28) during the linear movement.
8. Closing device (3) according to one of the preceding claims, characterized in that the locking pin (24) has on the circumference at least one first depression (24.1A) which, in the released state of the locking arrangement (20), is aligned with the guide (28), wherein the at least one ball (22A, 22B) can be at least partially received by the at least one first depression (24.1A) and has at least one first blocking region (24.2A) which, in the locking state of the locking arrangement (20), blocks the guide (28).
9. Closing device (3) according to one of the preceding claims, characterized in that the door opener latch (11) is configured as a rotary bolt (13) and is mounted in the housing (7) so as to be rotatable about a rotation pin (15).
10. Closing device (3) according to Claim 9, characterized in that the guide (28) is arranged in the housing (7) in such a manner that a centre point of the at least one ball (22A, 22B) is arranged above the rotation pin (15) of the door opener latch (11) configured as a rotary bolt (13).
11. Closing device (3) according to one of Claims 7 to 10, characterized in that the guide contour (16) of the door opener latch (11) has at least one depression (16.1) which at least partially receives the first ball (22A) in the closed position of the door opener latch (11).
12. Closing device (3) according to Claim 11, characterized in that the depression (16.1) in the guide contour (16), when the door opener latch (11) is configured as a rotary bolt (13), is arranged in such a manner that a contact region of the at least one ball (22A, 22B) is arranged in the depression (16.1) above the rotation pin (15) of the door opener latch (11) configured as a rotary bolt (13).
13. Closing device (3) according to Claim 12, characterized in that, in the locking state of the locking arrangement (20), the guide contour (16), with the lock latch acting upon the door opener latch (11), is supported on the at least one ball (22A, 22B), which is supported on the blocking region (24.2A, 24.2B) of the locking pin (24) and on the guide (28) in the housing (7) and blocks the movement of the door opener latch (11) into the open position.
14. Closing device (3) according to one of Claims 11 to 13, characterized in that, in the released state of the locking arrangement (20), the guide contour (16), with the lock latch acting upon the door opener latch (11), rolls on the at least one ball (22A, 22B), with the result 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 pin (24) and sliding element (42).
15. Closing device (3) according to one of the preceding claims, characterized in that the guide (28) is configured as a through opening (28.1) in the housing (7), the dimensions of which are matched to a diameter of the at least one ball (22A, 22B).
16. Closing device (3) according to one of Claims 6 to 15, characterized in that the locking arrangement (20) has two guides (28) in each of which at least one ball (22A, 22B) is guided in a linearly movable and rotatable manner, wherein the guides (28) open with a predeterminable spacing into the through-opening (26.1) of the locking pin (24), which has two first depressions (24.1A) and two first blocking regions (24.2A), the axial spacing of which corresponds to the spacing 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).
17. Closing device (3) according to one of Claims 6 to 16, characterized in that two balls (22A, 22B) are combined in a linearly movable manner in at least one guide (28), wherein the door opener latch (11), which is acted upon by the lock latch, during the movement into the open position causes the linear movement of the two balls (22A, 22B), during 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) runs into a corresponding recess (44) of the sliding element (42) and displaces the sliding element (42) counter to the force of the restoring spring (46), and, when the door opener latch (11) is released, the sliding element (42) moves the two balls (22A, 22B) and the door opener latch (11) back into the closed position.
18. Closing device (3) according to one of the preceding claims, characterized in that the locking pin (24) is configured for selectively switching the locking arrangement (20) between closed-circuit current execution and open-circuit current execution and has on the circumference at least one second blocking region (24.2B) which has a circumferential spacing of 180° from the at least one first blocking region (24.2A), and has at least one second depression (24.1B) which has a spacing of 180° from the at least one first depression (24.1A), wherein, in a first position of rotation, the locking pin (24) determines the closed-circuit current execution for the locking arrangement (20), which assumes the released state in the deenergized state of the electrical actuating drive (30), and in a second position of rotation which is rotated about 180°, determines the open-circuit current execution for the locking arrangement (20), which assumes the released state in the energized state of the electrical actuating drive (30).
19. Door assembly having at least one door leaf and an electrically switchable closing device (3) which is used as a door opener, characterized in that the electrically switchable closing device (3) is configured according to one of Claims 1 to 18.

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