EP3363972B1 - Electrically actuated closing device for a door assembly - Google Patents

Description

The invention relates to an electrically switchable locking device for a door system referred to in the preamble of claim 1. Art and 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 are known from the prior art, which is used as a door opener. Such an electrically switchable locking device generally comprises a housing, a door latch latch which cooperates with a latch, which is movable between a closed position and an open position, an electrically actuatable actuator and a locking arrangement arranged between the door latch latch and the actuator, which the actuator drives between a locking state and a release state switches. 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 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, ie between a working current version and a quiescent current version. In the working current version, the locking arrangement is switched by energizing the actuator from the locking state to the release state. In the quiescent current version, the locking arrangement is switched by energizing the actuator from the release state to the lock state.

From the DE 196 07 684 C1 For example, an electric door opener with an acted upon by an armature and a solenoid change is known, which is arranged to release or lock a door latch latch adjustable. The electric door opener comprises a device with which, according to the respective requirements, a changeover of the armature change system from a quiescent current version to a working current version and vice versa can be performed. For switching a three-point armature movement limit is provided, which can specify the one embodiment in one position and the other embodiment in two alternatively adjustable positions.

From the DE 196 17 150 B is a generic electrically switchable locking device known, which is used in particular as a door opener. The locking device comprises a cooperating with a latch door latch, an electrically actuated actuator and a plurality of arranged between the door opener latch and the actuator movement elements, which are designed as rolling elements. Trained as rolling elements movement elements are guided displaceably within a housing of the locking device between a locking position and a release position of the door opener latch, wherein the rolling elements roll on each other.

From the GB 181,221 is an electrically controlled locking a railroad car door known. By operating a handle, the lock is released via an electrically controlled latch. A projection engaging a bolt on a cylinder locks the movement of the bolts. The projection is moved in and out by means of a ball arranged in a groove in a cylinder. This projection is engaged with the handle.

The invention has for its object to provide an electrically switchable locking device for a door system and a corresponding door system with such an electrically switchable locking device, which is a robust mechanical Has construction, which also under preload friction and can be opened with little effort.

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 23.

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

In order to provide a robust mechanical construction, which can be opened under low preload friction and with little effort, comprises a locking arrangement of the locking device, which is disposed between the door latch and an electrically operable actuator within the housing at least two linearly in a leadership summarized balls as Locking elements and a guided in a through hole locking axis, which the actuator between a locking position, which corresponds to a locking state of the locking assembly, and a release position, which corresponds to the release state of the locking assembly. The guide of the at least two balls extends between the door opener latch and the locking axis and opens into the passage opening of the Verrieglungsachse. Here, the locking axis blocked in the locking position, the linear movement of the balls and the movement of the door latch and release the linear movement of the balls and the movement of the door opener trap in the release position. The door opener latch cooperates with a latch and is designed to be movable between a closed position and an open position. The door opener latch is locked in the closed position in the locked state of the locking arrangement against movement into the open position and released in the release state of the locking arrangement for movement into the open position.

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 execution of the locking elements as balls causes the locking device can be easily opened both in a panic function and with preload. In addition, embodiments of the invention provide a robust mechanical and impact resistant construction. Furthermore, the design of the locking elements as guided in a guide balls allows a small design of the locking device, which can also be easily integrated into the sheet or the frame of the corresponding door leaf.

In a further advantageous embodiment of the locking device acted upon by the latch case door latch can cause the linear movement of the balls in the movement in the open position, in which a first ball rolls on a guide contour of the door latch and a second ball. Due to the punctiform contact points between the first ball and the guide contour and between the first ball and the second ball results in only a small amount of friction during the released opening movement.

In a further advantageous embodiment of the locking device, the first ball may have a larger diameter than the second ball. In addition, the guide can be designed as a stepped passage opening whose dimensions can be adapted to the diameter of the balls. For example, the locking axle may have at least one first blocking region on the circumference, which in the locking state of the locking arrangement can cover the guide and block the second ball. The at least one first blocking region can be embodied, for example, as a section of the lateral surface of the locking axis or as a protrusion protruding from the lateral surface of the locking axis. Furthermore, the locking axle can have at least one first release area on the circumference, which can be aligned with the guide in the release state of the locking arrangement. Here, the second ball can be at least partially received by the at least one first release area. The at least one first release area can for example be introduced as a depression in the lateral surface of the locking axis or executed as a portion of the lateral surface of the locking axis. In addition, the guide contour of the door opener latch may have at least one recess which can at least partially accommodate the first ball. The depressions and bulges are preferably rounded in order to allow the lowest possible rolling movement of the balls. Advantageously, in the locking state of the locking arrangement, the guide contour can be supported by the latch on the first ball when the door latch is acted upon, which can be supported by the second ball on the locking axis and block the movement of the latch in the open position. In the release state of the locking arrangement, the guide contour can roll upon exposure of the door latch by the latch on the first ball, so that the door latch can perform the movement in the open position and the first ball can move towards the second ball and locking axis. Due to the different diameters of the two balls, the smaller second ball can be performed in a smaller diameter portion of the stepped passage opening than the larger second ball. As a result, the required space can be further reduced. In addition, the guidance and support of the guide contour of the door opener catch on the first ball can be optimized or improved and adapted to the effective support force by the larger diameter of the first ball. Due to the smaller diameter of the second ball, the at least one release area and the at least one blocking area on the locking axis can likewise be dimensioned smaller for the same functionality.

In a further advantageous embodiment of the locking device, the door opener latch in the region of the guide contour can have at least one permanent magnet, which can attract the first ball. As a result, the first ball always returns to its original position, whereby the rolling movement can be facilitated.

In a further advantageous embodiment of the locking device, a first axle lock, which is inserted into the passage opening and can act on a first free end of the locking axis, secure the locking axis against rotation and allow axial movement. The locking axle can be rotatably guided at a second free end in a slide, which can be acted upon axially by the electrically operable actuator. Advantageously, the slide can be designed so that it can be placed radially from above onto the second free end of the locking axis. Here, the second free end of the locking axis have a circumferential groove into which a wall of a receptacle in the slide can engage. As a result, the entrainment of the locking axis can be ensured by the slider. Preferably, the electrically actuable actuator can act against the force of a compression spring on the slider. By the compression spring, the slider and thus the locking axis can be reset after switching off the energization of the actuator back to the starting position. The electrically operable actuator can be performed for example as an electromechanical solenoid and / or as an electromotive actuator.

In a further advantageous embodiment of the locking device, the locking arrangement may comprise two guides, in each of which a first ball and a second ball can be guided linearly movable and rotatable. The guides can open at a predeterminable distance in the passage opening of the locking axis, which may have two first release areas and two first blocking areas, whose axial distance may correspond to the distance of the guides. By using two pairs of balls in two guides, the support and guidance of the door opener trap can be improved in an advantageous manner. Preferably, the at least one guide and the passage opening is introduced into an axle guide component, which can be designed, for example, as part of the housing.

In a further advantageous embodiment of the locking device, the door opener latch can be designed as a rotary latch and rotatably mounted in the housing about an axis of rotation. This can be done by the latch against the force of a return spring, the actuation of the door latch. The return spring can be performed, for example, as a leg spring.

In a further advantageous embodiment of the locking device, the locking axis for selectively switching the locking arrangement between quiescent current execution and working current execution are executed and at least a second blocking region, which may have a predetermined circumferential distance to the at least one first blocking region, and at least one second release region, which at the periphery may have the predetermined circumferential distance to the at least one first release area. The locking axis can set the quiescent current version for the locking arrangement in a first rotational position, which assumes the release state in the de-energized state of the electric actuator. In a rotated by the given circumferential distance second rotational position, the locking axis can specify the Arbeitsstromtypausführung for the locking arrangement, which assumes the release state in the energized state of the electric actuator. In addition, the at least one first blocking region at the level of the at least one second release region and the at least one second blocking region at the height of the at least one first release region can be arranged. With this embodiment, the change between the quiescent current type and the working current type can be made simply by taking the first axis fuse out of the passage opening and then rotating the locking axis by the predetermined distance. Then, the first axis fuse can be inserted back into the through hole and so with the first free end of Verrieglungsachse cooperate, that a rotational movement of the locking axis is blocked. The first axle lock can be fixed in the through hole by a second axle lock. The predetermined circumferential distance can correspond for example to a rotation angle of 90 ° or 180 ° or 270 °.

Embodiments of the invention will be explained in more detail with reference to drawings. In the drawings, like reference numerals 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 perspektivische Darstellung des Ausführungsbeispiels einer erfindungsgemäßen Zuhaltevorrichtung aus Fig. 1 mit abgenommenem Deckel,

Fig. 3

eine schematische Seitenansicht der Zuhaltevorrichtung aus Fig. 1,

Fig. 4

eine schematische Draufsicht der Zuhaltevorrichtung aus Fig. 1,

Fig. 5

eine schematische perspektivische Darstellung eines Gehäuses für das Ausführungsbeispiel einer erfindungsgemäßen Zuhaltevorrichtung aus Fig. 1,

Fig. 6

eine schematische Schnittdarstellung des Gehäuses aus Fig. 5 entlang der Schnittlinie C-C,

Fig. 7

eine schematische perspektivische Darstellung der Zuhaltevorrichtung aus Fig. 1 ohne Gehäuse und Deckel.

Fig. 8

eine schematische Seitenansicht der Zuhaltevorrichtung aus Fig. 7 als Ruhestromausführung,

Fig. 9

eine schematische Seitenansicht der Zuhaltevorrichtung aus Fig. 7 als Arbeitsstromausführung,

Fig. 10

eine erste schematische Schnittdarstellung der Zuhaltevorrichtung aus Fig. 3 entlang der Schnittlinie A-A mit einer Türöffnerfalle in der Geschlossenstellung und einer Verriegelungsanordnung im Verriegelungszustand,

Fig. 11

eine zweite schematische Schnittdarstellung der Zuhaltevorrichtung aus Fig. 3 entlang der Schnittlinie A-A mit einem alternativen Ausführungsbeispiel einer Türöffnerfalle in der Geschlossenstellung und der Verriegelungsanordnung im Verriegelungszustand.

Fig. 12

eine erste schematische Schnittdarstellung der Zuhaltevorrichtung aus Fig. 4 entlang der Schnittlinie B-B mit der Türöffnerfalle in der Geschlossenstellung und der Verriegelungsanordnung im Verriegelungszustand,

Fig. 13

eine dritte schematische Schnittdarstellung der Zuhaltevorrichtung aus Fig. 3 entlang der Schnittlinie A-A mit der Türöffnerfalle in der Geschlossenstellung und der Verriegelungsanordnung im Freigabezustand,

Fig. 14

eine vierte schematische Schnittdarstellung der Zuhaltevorrichtung aus Fig. 3 entlang der Schnittlinie A-A mit der Türöffnerfalle in der Offenstellung und der Verriegelungsanordnung im Freigabezustand, und

Fig. 15

eine zweite schematische Schnittdarstellung der Zuhaltevorrichtung aus Fig. 4 entlang der Schnittlinie B-B mit der Türöffnerfalle in der Offenstellung und der Verriegelungsanordnung im Freigabezustand.

Showing:

Fig. 1

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

Fig. 2

a schematic perspective view of the embodiment of a locking device according to the invention from Fig. 1 with lid removed,

Fig. 3

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

Fig. 4

a schematic plan view of the locking device Fig. 1 .

Fig. 5

a schematic perspective view of a housing for the embodiment of a locking device according to the invention from Fig. 1 .

Fig. 6

a schematic sectional view of the housing Fig. 5 along the section line CC,

Fig. 7

a schematic perspective view of the locking device Fig. 1 without housing and lid.

Fig. 8

a schematic side view of the locking device Fig. 7 as a quiescent current version,

Fig. 9

a schematic side view of the locking device Fig. 7 as a working current version,

Fig. 10

a first schematic sectional view of the locking device Fig. 3 along the section line AA with a door opener latch in the closed position and a locking arrangement in the locked state,

Fig. 11

a second schematic sectional view of the locking device Fig. 3 along the section line AA with an alternative embodiment of a door latch in the closed position and the latch assembly in the locked state.

Fig. 12

a first schematic sectional view of the locking device Fig. 4 along the section line BB with the door opener latch in the closed position and the locking arrangement in the locked state,

Fig. 13

a third schematic sectional view of the locking device Fig. 3 along the section line AA with the door opener latch in the closed position and the lock assembly in the release state,

Fig. 14

a fourth schematic sectional view of the locking device Fig. 3 along the section line AA with the door opener latch in the open position and the latch assembly in the release state, and

Fig. 15

a second schematic sectional view of the locking device Fig. 4 along the section line BB with the door opener latch in the open position and the locking arrangement in the release state.

How out Fig. 1 to 15 It can be seen embodiments of an electrically switchable locking device 3 according to the invention for a door system each comprise a housing 7, a cooperating with a latch door latch 11A, 11B, which is movable between a closed position and an open position, an electrically actuable actuator 30 and between the door latch 11 and the actuator 30 arranged locking assembly 20, which the actuator 30 switches between a lock state and a release state. The door opener latch 11A, 11B is locked in the closed position in the locked state of the latch assembly 20 against movement into the open position and released in the release state of the latch assembly 20 for movement into the open position.

The locking assembly 20 includes within the housing 7 at least two in a guide 28 linearly summarized balls 22A, 22B as locking elements 22 and guided in a through hole 26.1 locking axis 24, which the actuator 30 between a locking position, which corresponds to the locking state of the locking assembly 20, and a release position which corresponds to the release state of the locking assembly 20 moves. According to the invention, the guide 28 of the at least two balls 22A, 22B extends between the door opener latch 11A, 11B and the locking axle 24 and opens into the through opening 26.1 of the locking axle 24. In this case, the locking axle 24 blocks the linear movement of the balls 22A, 22B and the movement in the locking position the door opener latch 11A, 11B. In the release position, the locking axis 24 releases the linear movement of the balls 22A, 22B and the movement of the door opener latch 11A, 11B.

How out Fig. 7 to 15 1, the first ball 22A has a larger diameter than the second ball 22B, and the guide 28 is configured as a stepped through-hole 28.1 whose dimensions are matched to the diameters of the balls 22A, 22B. Thus, a first portion of the passage opening 28.1 is adapted to the larger first ball 22A and has a larger diameter than a second portion of the passage opening 28.1, which is adapted to the second ball 22B.

In addition, the door opener latch 11A, 11B designed as a rotary latch 13 and rotatably mounted about an axis of rotation 15 in the housing 7. The axis of rotation 15 is mounted in corresponding axle guides 7.1 in the housing. A loading of the door opener latch 11A, 11B by the lock latch, not shown, takes place against the force of a return spring 17, which is designed as a leg spring.

How out Fig. 7 to 15 It can be seen further, the locking assembly 20 in the illustrated embodiments, two guides 28, in each of which a first ball 22A and a second ball 22B are guided linearly movable and rotatable. The guides 28 extend in the illustrated embodiments perpendicular to the passage opening 26.1 of the locking axis 24 and open at a predetermined distance in the passage opening 26.1. The locking axis 24 comprises two clearance areas 24.1A designed as depressions and two first blocking areas 24.2A designed as sections of the lateral surface of the locking axis 24, the axial distance of which corresponds to the spacing of the guides 28. As in particular from FIGS. 5 and 6 it can be seen, the at least one guide 28 and the passage opening 26.1 are introduced into an axle guide component 26, which is designed as part of the housing 7 in the illustrated embodiment. In an alternative embodiment, not shown, the at least one blocking region 24.2A, 24.2B is designed as protrusion projecting from the lateral surface of the locking axis 24, and the at least one release region 24.1A, 24.1B is a section the lateral surface of the locking axis 24 executed. In a further embodiment, not shown, the at least one blocking region 24.2A, 24.2B designed as projecting from the lateral surface of the locking axis 24 protrusion and the at least one release area 24.1A, 24.1 B is introduced as a recess in the lateral surface of the locking axis 24.

As in particular from 8 and 9 it can be seen, the locking axis 24 is designed for selectively switching the locking assembly 20 between closed-circuit design and load current version. Therefore, the locking axis 24 on the circumference two as sections of the lateral surface of the locking axis 24 running second blocking regions 24.2B, which in the illustrated embodiment, a circumferential distance of 180 ° to the two as sections of the lateral surface of the locking axis 24 running first blocking regions 24.2A have, and two designed as wells second release areas 24.1 B, which have a circumferential distance of 180 ° to the two designed as wells first release areas 24.1A. Furthermore, the two first blocking regions 24.2A are each arranged at the level of the two second release regions 24.1B. The two second blocking regions 24.2B are each arranged at the level of the first two release regions 24.1A. How out Fig. 8 can be seen, sets the locking axis 24 in a illustrated first rotational position, the quiescent current execution for the locking assembly 20, which assumes the release state in the de-energized state of the electric actuator 30. How out Fig. 9 can be seen, sets the locking shaft 24 in a rotated by 180 ° second rotational position the working current version for the locking assembly 20, which assumes the release state in the energized state of the electric actuator 30. In alternative embodiments, not shown, the circumferential distance, for example, correspond to a rotation angle of 90 ° or 270 °.

The following will be with reference to 10 to 15 the processes in the locking unit 20 described. As in particular from 10 to 12 it can be seen, the locking axis 24 on the circumference at least a first blocking region 24.2A, which covers the guide 28 in the illustrated locking state of the locking assembly 20 and blocks the second ball 22B. A guide contour 16 of the door opener latch 11A, 11B has at least one recess 16.1, which at least partially receives the first ball 22A. In the illustrated locking state of the locking arrangement 20, the guide contour 16 is supported by the non-illustrated latch on the first ball 22A when the door opener latch 11A, 11B is acted on. The first ball 22A is supported by the second ball 22B on the locking shaft 24, and the movement of the door opener latch 11A, 11B to the open position is blocked. This applies to both in Fig. 12 shown guides 28, in each of which a first ball 22A and a second ball 22B are arranged.

How out FIGS. 10 and 12 can be seen, the door opener latch 11A in this embodiment in the region of the guide contour 16 at least one permanent magnet 14, which attracts the first ball 22A. As a result, the first ball 22A always returns to its original position, whereby the rolling movement can be facilitated. How out Fig. 11 it can be seen, the illustrated embodiment, no permanent magnet 14. As a result, a simpler design of the door latch 11B is possible.

How out Fig. 13 to 15 can be seen, the locking axis 24 on the circumference at least a first release area 24.1A, which in the in Fig. 13 shown release state of the latch assembly 20 is aligned with the guide 28, wherein the second ball 22B can be at least partially received by the at least one first release area 24.1A. How out Fig. 13 can be seen, the permanent magnet 14 holds the first ball 22A in its initial position in the recess 16.1 of the guide contour 16. In the illustrated Release position of the latch assembly 20 causes the actuated by the lock latch, not shown door latch 11A during movement into the open position, the linear movement of the balls 22A, 22B, in which the first ball 22A on the guide contour 16 of the door latch 11A and on the second ball 22B unrolls. As a result, the first ball 22A moves in the direction of the second ball 22B and locking axle 24 and pushes the second ball 22B into the first release area 24.1A in the locking axis 24. The dimensions of the first clearance area 24.1A are dimensioned so that the door opener latch 11A, 13 itself in her in FIGS. 14 and 15 shown open position can move.

How out Fig. 12 and 15 The first axle lock 26.2 secures the locking axle 24 against rotation and allows axial movement of the locking axle 24 , which is bolted to the housing 7, the first axle lock 24.2 in the passage opening 26.1. At a second free end, the locking axis 24 is rotatably guided in a slide 29 which is axially acted upon by the electrically actuable actuator 30. The slide 29 is placed in the illustrated embodiment from above radially to the second free end of the locking axis 24, wherein the second free end of the locking axis 24 has a circumferential groove into which a wall of a receptacle 29.1 engages the slider 30. The electrically operable 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 in 10 to 15 illustrated embodiments of the locking assembly 20 sets the locking shaft 24 in the illustrated second rotational position, the working current version for the locking assembly 20 fixed. When energizing the solenoid 32 of the actuator 30 via a terminal 36, the slider 29 is tightened against the force of the compression spring 34 and moved in the direction of solenoid 32. As a result, the slider 30 moves the locking shaft 24 from the in 10 to 12 illustrated locking position in the in Fig. 13 to 15 shown release position.

If the locking device 3 or the locking arrangement 20 are to be operated in the quiescent-current version, then the second axle lock 26.3 is released and the first axle lock 26.2 is removed from the passage opening 26.1. Then the locking axis 24 is rotated by 180 °. Subsequently, the first axle lock 24.2 is again inserted into the passage opening 26.1 and attached to the first end of the locking axle 24. Subsequently, the second axle lock 24.3 is screwed back to the housing 7. Since now the positions of the release areas and blocking areas are reversed, the locking assembly 20 in the de-energized actuator 30, the Verrieglungszustand and energized actuator 30 to the release state.

Embodiments of the invention electrically switchable locking device 3 are preferably used as a door opener in a door system with at least one door leaf.

LIST OF REFERENCE NUMBERS

1

stulp

2

Recess (lock bolt)

3

locking device

5

recess

7

casing

7.1

axle location

9

cover

11A, 11B

strike latch

13

Turnstile (door opener trap)

14

permanent magnet

15

axis of rotation

16

guide contour

16.1

deepening

17

Return spring

20

lock assembly

22

locking element

22A

first (big) ball

22B

second (small) ball

24

Locking axle (adjusting axle)

24.1A, 24.1B

release area

24.2A, 24.2B

blocking region

26

Achsführungsbauteil

26.1

Through opening

26.2

first axle backup

26.3

second axle securing

28

guide

28.1

Through opening

29

pusher

29.1

admission

30

actuator

32

electromechanical lifting magnet

34

compression spring

36

terminal

Claims (23)

1. Electrically switchable closing device (3) for a door assembly, having a housing (7), a door opener latch (11A, 11B) 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 (11A, 11B) 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 two balls (22A, 22B) as locking elements (22) which are combined 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 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),
   characterized in that
   the guide (28) of the at least two balls (22A, 22B) extends between the door opener latch (11A, 11B) 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 balls (22A, 22B) and the movement of the door opener latch (11A, 11B) and releases them in the release position.
2. Closing device (3) according to Claim 1,
   characterized
   in that, during the movement into the open position, the door opener latch (11A, 11B) acted upon by the lock latch causes the linear movement of the balls (22A, 22B), in which movement a first ball (22A) rolls on a guide contour (16) of the door opener latch (11A, 11B) and on a second ball (22B) .
3. Closing device (3) according to Claim 2,
   characterized
   in that the first ball (22A) has a larger diameter than the second ball (22B), and the guide (28) is configured as a stepped through-opening (28.1) whose dimensions are adapted to the diameters of the balls (22A, 22B).
4. Closing device (3) according to Claim 2 or 3,
   characterized
   in that the locking pin (24) has on the circumference at least one first blocking region (24.2A) which, in the locking state of the locking arrangement (20), covers the guide (28) and blocks the second ball (22B).
5. Closing device (3) according to Claim 4,
   characterized
   in that the at least one first blocking region (24.2A) is configured as a portion of the lateral surface of the locking pin (24) or as a protrusion which projects from the lateral surface of the locking pin (24).
6. Closing device (3) according to Claim 4 or 5,
   characterized
   in that the locking pin (24) has on the circumference at least one first release region (24.1A) which, in the released state of the locking arrangement (20), is aligned with the guide (28), wherein the second ball (22B) can be at least partially received by the at least one first release region (24.1A).
7. Closing device (3) according to Claim 6,
   characterized
   in that the at least one first release region (24.1A) is incorporated as a depression in the lateral surface of the locking pin (24) or is configured as a portion of the lateral surface of the locking pin (24).
8. Closing device (3) according to one of Claims 2 to 7,
   characterized
   in that the guide contour (16) of the door opener latch (11A, 11B) has at least one depression (16.1) which at least partially receives the first ball (22A).
9. Closing device (3) according to Claim 8,
   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 (11A, 11B), is supported on the first ball (22A), which is supported via the second ball (22B) on the locking pin (24) and blocks the movement of the door opener latch (11A, 11B) into the open position.
10. Closing device (3) according to Claim 8 or 9,
    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 (11A, 11B), rolls on the first ball (22A), with the result that the door opener latch (11A, 11B) executes the movement into the open position and the first ball (22A) moves in the direction of the second ball (22B) and locking pin (24).
11. Closing device (3) according to one of Claims 2 to 10,
    characterized
    in that the door opener latch (11A) has, in the region of the guide contour (16), at least one permanent magnet (14) which attracts the first ball (22A).
12. Closing device (3) according to one of Claims 1 to 11,
    characterized
    in that a first pin-securing means (26.2), which is inserted into the through-opening (26.1) and acts on a first free end of the locking pin (24), secures the locking pin (24) against rotation and allows an axial movement, wherein the locking pin (24) is guided rotatably at a second free end in a slide (29) which can be axially acted upon by the electrically actuatable actuating drive (30).
13. Closing device (3) according to Claim 12,
    characterized
    in that the slide (29) is placed radially from above onto the second free end of the locking pin (24), wherein the second free end of the locking pin (24) has a peripheral groove in which a wall of a receptacle (29.1) in the slide engages.
14. Closing device (3) according to Claim 12 or 13,
    characterized
    in that the electrically actuatable actuating drive (30) acts on the slide (29) against the force of a compression spring (34).
15. Closing device (3) according to one of Claims 1 to 14,
    characterized
    in that the electrically actuatable actuating drive (30) is configured as an electromechanical solenoid (32) and/or as an electromotive actuator.
16. Closing device (3) according to one of Claims 1 to 15,
    characterized
    in that the locking arrangement (20) has two guides (28) in each of which a first ball (22A) and a second ball (22B) are linearly movable and rotatably guided, wherein the guides (28) open with a predeterminable spacing into the through-opening (26.1) of the locking pin (24), which has two first release regions (24.1A) and two first blocking regions (24.2A) whose axial spacing corresponds to the spacing of the guides (28) .
17. Closing device (3) according to one of Claims 1 to 16,
    characterized
    in that the at least one guide (28) and the through-opening (26.1) are incorporated in a pin-guiding component (26).
18. Closing device (3) according to one of Claims 1 to 17,
    characterized
    in that the door opener latch (11A, 11B) is configured as a rotary bolt (13) and is mounted in the housing (7) so as to be rotatable about a rotation pin (15), wherein the lock latch acts upon the door opener latch (11A, 11B) against the force of a restoring spring (17).
19. Closing device (3) according to Claim 18,
    characterized
    in that the restoring spring (17) is configured as a leg spring.
20. Closing device (3) according to one of Claims 1 to 19,
    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 predetermined circumferential spacing from the at least one first blocking region (24.2A), and has at least one second release region (24.1B) which has the predetermined circumferential spacing from the at least one first release region (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 by the predetermined circumferential spacing, 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).
21. Closing device (3) according to Claim 20,
    characterized
    in that the predetermined circumferential spacing corresponds to an angle of 90° or of 180° or of 270°.
22. Closing device (3) according to Claim 20 or 21,
    characterized
    in that the at least one first blocking region (24.2A) is arranged at the height of the at least one second release region (24.1B), and the at least one second blocking region (24.2B) is arranged at the height of the at least one first release region (24.1A).
23. 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 22.

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