EP3460157B1 - Locking device - Google Patents

Description

The following invention relates to a locking device for locking a door leaf in a locking position between an open position and a closed position, the door leaf being movably guided between the open position and the closed position by means of a sliding element which engages longitudinally in a guide rail. The invention also relates to a guide rail for guiding a door leaf between an open position and a closed position, having at least one corresponding locking device. Locking devices for door leaves are known in principle. Some locking devices are arranged directly in a guide rail in which a sliding element is accommodated in a longitudinally displaceable manner in order to determine the movement of the door leaf between an open position and a closed position. Such a locking device is, for example, from DE 196 96 294 C1 known, which can be brought into operative connection with the sliding element by means of an electromagnet with an armature in order to hold the sliding element in place. It has been found to be a disadvantage that the locking device cannot be driven over. Furthermore, it is disadvantageous that only one position of the door leaf can be determined. Furthermore, it is disadvantageous that the locking device fully occupies the guide rail in cross section. If, for example, the door leaf has been locked in a locking position between an open position and a closed position, it cannot be moved any further into the extreme open position. This can lead to difficulties when transporting bulky objects, for example when moving.

The pamphlet EP2636824 also discloses a locking device for a door leaf, comprising a guide rail, a linearly movably guided movement element in the guide rail, an electromagnet which is stationary with respect to the guide rail and a locking element which can be attracted by the electromagnet, the locking element being linearly movably guided in the movement element in a vertical locking direction. To fix the moving element, when the electromagnet or the coil is energized, a locking plate in the locking direction is attracted by the electromagnet. The locking edge the locking plate enters into a form-fitting connection with the electromagnet.

It is the object of the present invention to at least partially overcome the disadvantages described above in a locking device for locking a door leaf in a locking position between an open position and a closed position. In particular, it is the object of the present invention to provide a locking device for locking a door leaf in a locking position between an open position and a closed position, which is constructed simply and with few components, which allows an inexpensive and simple installation of the locking device in a guide rail on a door frame and which has an extended functionality.

The above object is achieved by a locking device with the features of independent claim 1. Further features and details of the invention emerge from the subclaims, the description and the drawings. Features and details that are described in connection with the locking device according to the invention naturally also apply in connection with the guide rail according to the invention and vice versa, so that with regard to the disclosure, reference is or can always be made to the individual aspects of the invention.

The invention provides a locking device for locking a door leaf in a locking position between an open position and a closed position, the door leaf by means of a sliding element which engages longitudinally displaceably in a guide rail between the open position and the closed position is movably guided, comprising: an electromagnet with an armature which can be brought into a mechanical operative connection with the sliding element for locking the door leaf in order to stop the door leaf in the locking position between the open position and the closed position, wherein in an operating state of the electromagnet, the sliding element can be locked in the guide rail, and when the electromagnet is in a state of rest, the sliding element is freely movable in the guide rail. For this purpose, it is provided according to the invention that the electromagnet has a flat base body which can be arranged in an upper functional space of the guide rail so that the sliding element can be moved past the locking device in a lower guide space of the guide rail in the operating state of the electromagnet in order to move the door leaf out of the locking position to transfer to the open position.

The guide rail can be arranged on a door frame and have a horizontal orientation. The sliding element can interact with a lever element which is connected to the sliding element in a rotationally movable manner. Another end of the lever element can be rotatably mounted on the door leaf. At this end, the lever element can also be connected in a rotationally movable manner to a drive or to an at least partially automatic device for driving the door leaf between the open position and the closed position. The sliding element can slide longitudinally in the guide rail and thus support the door leaf during its movement between the open position and the closed position. It is also conceivable that the sliding element is designed to be spring-loaded and can be guided by a spring.

The guide rail has two spaces, an upper functional space for receiving the locking device according to the invention and a lower guide space for guiding the sliding element. When the electromagnet is switched off, the sliding element can slide back and forth past the locking device. When the electromagnet is switched on, the sliding element can only slide past the locking device in the direction from the locking position into the open position of the door leaf. From the extreme open position of the door leaf, however, the sliding element cannot get past the locking device, at least as long as the electromagnet is in the operating state.

In this case, when the electromagnet is at rest, the armature can be stowed completely within the functional space in order not to enter the guide space and not to impair the movement of the sliding element therein. In the operating state of the electromagnet, the armature can at least partially engage in the guide space and / or come to rest on the sliding element at least from one side in order to prevent the movement of the sliding element from the locking position into the closed position. The armature can, in turn, only be used as a transmission element to a blocking element which, when the electromagnet is switched on, can intervene in the guide space in order to hold the sliding element in place from at least one side.

The idea of the invention lies in the fact that the electromagnet is designed and has such a flat base body that the electromagnet only occupies an upper part of the guide rail in the functional space, and that when the electromagnet is inoperative, the sliding element can move unhindered below the electromagnet, namely towards and back past the locking device. Consequently the advantage can be achieved that the locking device can be driven over. Furthermore, it is advantageous that several different positions of the door leaf can thus be designed to be lockable. For this purpose, a locking device according to the invention would have to be arranged in a corresponding position in the guide rail. In addition, it is advantageous that the locking device leaves sufficient free space in the guide rail to allow the sliding element to pass the locking device. In addition, due to its size, the locking device can be retrofitted in existing guide rails in order to upgrade the guide rails. If, for example, the door leaf has been locked in the locking position, which lies between the open position and the closed position, with the aid of the locking device according to the invention, the door leaf can be moved into the open position without hindrance, regardless of the state of the electromagnet. When transporting bulky objects through a door opening, a user, for example a moving helper, without having to put down the objects to be transported, can push open the door leaf, for example with a shoulder, in the direction of the open position.

Thus, an improved locking device for locking a door leaf in a locking position between an open position and a closed position is provided, which has a simple structure with few components, which allows an inexpensive and simple assembly of the locking device in a guide rail on a door frame and which has an extended functionality has because the locking position can be overridden.

Furthermore, the invention can provide for a locking device that the base body has a height which is approx. 25% to approx. 50%, preferably approx. 40% of the height of the guide rail, and / or that the base body has a length which is approx. 2 to approx. 10, preferably approx. 7 times greater than its height. The invention recognizes that the installation space in the guide rail is limited in the vertical direction, but not in the horizontal direction along the guide rail. In order to utilize the installation space within the guide rail, the electromagnet can be pulled in length, whereby its construction height can be reduced. Thus, over the length of the electromagnet, a sufficient holding force can be generated for the sliding element, with the electromagnet being able to be arranged in the upper functional space of the guide rail over the low height of the electromagnet. Thus, the sliding element can move below the electromagnet in the lower guide space of the guide rail without the electromagnet standing in the way of the sliding element. Only in the operating state of the electromagnet can the armature be actuated in such a way as to act on a blocking element or at least partially penetrate the guide space and stop the sliding element from only one side of the guide rail.

According to the invention, the electromagnet is designed as a holding magnet. A holding magnet advantageously has a limited hold-open distance. This is advantageous in order to influence the sliding element only when it is directly approaching the locking device. In addition, a limited parking distance is advantageous to the electronic and / or electrical components of the door leaf, such as. B. a drive and / or various sensors and / or a control unit, not to impair their functionality.

Furthermore, the invention can provide for a locking device that the electromagnet consists of at least two side by side arranged coils is composed. Thus, the advantage can be achieved that the holding force of the electromagnet on a special design of the door leaf, the frame-side guide rail, a drive and / or a place of use of the door leaf can be adjusted, for example increased. Thus, basically identical locking devices can be provided for different applications, which can be put together in the manner of a kit in order to set a desired holding force depending on the number of coils arranged next to one another. With a certain size and number of coils, magnetization can occur in the electromagnet. This number of coils can advantageously be used in order to set a maximum holding force for a specific size of the individual coils.

In addition, the invention can provide for a locking device that the electromagnet has at least one electrically insulating cover plate at the end in order to create a magnetic flux and to determine a locking distance of the electromagnet. The advantage can thus be achieved that the hold-open width of the electromagnet can be set to a certain, possibly application-specific, width. With an axially arranged cover disk, the depth of penetration of the electromagnetic field into the armature can also be influenced. In this way, a holding magnet can advantageously be realized which generates an attractive force only over a certain hold-open distance. Thus, the action of the electromagnet can be controlled. In addition, the magnetic field can thus be prevented from undesirably influencing electronic and / or electrical components which are arranged in the vicinity of the locking device.

In addition, the invention can provide for a locking device that the armature is designed like a sleeve, preferably with an armature plate and a jacket element, in order to delimit the electromagnet axially and at least partially radially. In the case of a holding magnet in particular, this can be advantageous in order to increase the holding force despite a small hold-open distance. As a result, a reliable hold for the sliding element can be created in a precisely set position in the guide rail.

Furthermore, the invention can provide for a locking device that the electromagnet or the armature has a plunger, preferably resiliently loaded with a release force and / or elastic, in order to prevent the armature from remaining magnetized in the armature when the electromagnet is transferred from the operating state to the idle state Solenoid solenoid. The advantage can thus be achieved that the effect of the electromagnet on the armature can be released immediately or quickly. As a result, the functioning of the locking device can be improved and the user-friendliness can be increased.

Furthermore, the invention can provide for a locking device that the electromagnet has a coil, the turns of which are arranged around a vertical axis of the electromagnet or the guide rail. In this way, the advantage can be achieved that an almost arbitrarily high holding force can be achieved regardless of a small, available structural height. The installation space along the guide rail can be used almost indefinitely in order to arrange the windings of the electromagnet around a vertical axis of the guide rail or rails. In the process, a holding force is generated which runs perpendicular to the direction in which the guide rail extends. To keep the holding power up To transmit the armature, the armature can be arranged below the electromagnet. However, this is easily possible since the windings of the electromagnet only take up a small amount of space in the horizontal plane.

The armature can advantageously have a flat body which is arranged parallel to the direction of longitudinal extent of the electromagnet. As a result, the holding force of the electromagnet is optimally transmitted to the armature with turns around a vertical axis of the electromagnet. To stop the armature from moving along the guide rail, the holding force of such an electromagnet acts like a frictional connection. With a corresponding number of turns and with a correspondingly long armature, the frictional engagement can achieve a reliable holding force on the armature. Thus, not only can the available installation space within the guide rail be used in an advantageous manner, but a holding force can be provided without magnetization.

Furthermore, the invention can provide for a locking device that the electromagnet is designed as a rotor of a linear motor in order to actively control the movement of the armature. Active means that the position of the armature can be set variably in both directions and preferably continuously. Furthermore, an infinitely adjustable holding force can thus be implemented depending on the request and depending on the position of the door leaf. For example, with small opening angles of the door leaf, which generate a likewise low closing force on the door leaf, a likewise low holding force for the armature can be sufficient to reliably hold the sliding element in the corresponding position within the guide rail. With relatively wide opening angles of the door leaf, the correspondingly higher one Generate closing force on the door leaf, the holding force can be increased in order to ensure that a user can push the door leaf further into the open position while walking past the door leaf, but the door leaf remains on the locking device, even when swinging, without accidentally falling and the Hurting user.

In addition, it is conceivable within the scope of the invention for a locking device that the electromagnet has a housing which is designed as a magnetic return body. As a result, the magnetic flux can be designed and directed in order to generate a precise effect of the electromagnet.

Fig. 1a

einen Türflügel mit einer erfindungsgemäßen Feststellvorrichtung in einer Schließposition,

Fig. 1b

einen Türflügel mit einer erfindungsgemäßen Feststellvorrichtung in einer Feststellposition,

Fig. 1c

einen Türflügel mit einer erfindungsgemäßen Feststellvorrichtung in einer Offenposition,

Fig. 2

eine Führungsschiene im Querschnitt mit einer erfindungsgemäßen Feststellvorrichtung,

Fig. 3a

einen beispielhaften Elektromagneten einer Feststellvorrichtung in einer perspektivischen Ansicht,

Fig. 3b

einen beispielhaften Elektromagneten einer Feststellvorrichtung in einer Frontansicht,

Fig. 3c

einen beispielhaften Elektromagneten einer Feststellvorrichtung in einer Seitenansicht,

Fig. 4

einen weiteren beispielhaften Elektromagneten einer Feststellvorrichtung in einer perspektivischen Ansicht,

Fig. 5

einen weiteren beispielhaften Elektromagneten einer Feststellvorrichtung in einer perspektivischen Ansicht,

Fig. 6

einen weiteren beispielhaften Elektromagneten einer Feststellvorrichtung in einer perspektivischen Ansicht,

Fig. 7

einen weiteren beispielhaften Elektromagneten einer Feststellvorrichtung in einer perspektivischen Ansicht,

Fig. 8

einen weiteren beispielhaften Elektromagneten einer Feststellvorrichtung in einer perspektivischen Ansicht,

Fig. 9

einen weiteren beispielhaften Elektromagneten einer Feststellvorrichtung in einer perspektivischen Ansicht,

Fig. 10

einen weiteren beispielhaften Elektromagneten einer Feststellvorrichtung in einer perspektivischen Ansicht, und

Fig. 11

eine schematische Darstellung einer erfindungsgemäßen Führungsschiene.

Further measures improving the invention are illustrated in more detail below with the description of the preferred exemplary embodiments of the invention with reference to the figures. It should be noted that the figures only have a descriptive character and are not intended to restrict the invention in any way. Show it:

Fig. 1a

a door leaf with a locking device according to the invention in a closed position,

Figure 1b

a door leaf with a locking device according to the invention in a locking position,

Figure 1c

a door leaf with a locking device according to the invention in an open position,

Fig. 2

a guide rail in cross section with a locking device according to the invention,

Fig. 3a

an exemplary electromagnet of a locking device in a perspective view,

Figure 3b

an exemplary electromagnet of a locking device in a front view,

Figure 3c

an exemplary electromagnet of a locking device in a side view,

Fig. 4

a further exemplary electromagnet of a locking device in a perspective view,

Fig. 5

a further exemplary electromagnet of a locking device in a perspective view,

Fig. 6

a further exemplary electromagnet of a locking device in a perspective view,

Fig. 7

a further exemplary electromagnet of a locking device in a perspective view,

Fig. 8

a further exemplary electromagnet of a locking device in a perspective view,

Fig. 9

a further exemplary electromagnet of a locking device in a perspective view,

Fig. 10

a further exemplary electromagnet of a locking device in a perspective view, and

Fig. 11

a schematic representation of a guide rail according to the invention.

In the different figures, the same parts of the locking device 10 and the guide rail 200 are always provided with the same reference numerals, which is why they are usually only described once.

the Figures 1a, 1b and 1c show a door leaf 100 first in a closed position I in the view of FIG Figure 1a , then in a locking position II in the view of Figure 1b and finally in an open position III in the view of the Figure 1c . In the open position III, the door leaf 100 is pivoted the furthest.

Based on Figures 1a, 1b and 1c it can be seen that a locking device 10 according to the invention is provided on a guide rail 200 for guiding a track block 20. Like it in particular the Figure 1c shows the locking device 10 according to the invention can be driven over for the sliding element 20 in the direction from the locking position II into the open position III. The locking device 10 can be driven over from the locking position II into the closed position I when the electromagnet 11 is switched off. When the electromagnet 11 is switched on, the locking device 10 holds the sliding element 20 in a corresponding position in the guide rail 200 in order to stop the door leaf 100.

The guide rail 200 can be arranged on a door frame 101 and have a horizontal orientation. The sliding element 20 can interact with a lever element 30 which is connected to the sliding element 20 such that it can rotate. Another end of the lever element 30 can be rotatably mounted on an at least partially automatic device (not shown) for actuating the door leaf 100. The sliding element 20 can slide longitudinally in the guide rail 200 and thus support the door leaf 100 during its movement between the open position III and the closed position I. Furthermore, the sliding element 20 can be spring-loaded, for example. From left to right in the view of FIG Figures 1a to 1c .

The locking device 10 according to the invention is the Figure 2 shown. The locking device 10 is used to lock the door leaf 100 in the locking position II (see Fig. Figure 1b ), which are between the open position III (s. Figure 1c ) and the closed position I (s. Figure 1a ) lies. The door leaf 100 can be guided between the open position III and the closed position I by means of the sliding element 20, which engages in the guide rail 200 in a longitudinally displaceable manner. The locking device 10 according to the invention comprises an electromagnet 11 with an armature 12, which is in a mechanical operative connection with the sliding element 20 for locking of the door leaf 100 can be brought in order to stop the door leaf 100 in the locking position II between the open position III and the closed position I. Here, the sliding element 20 is in an operating state 1 of the electromagnet 11, which is exemplified in FIG Figure 1b is shown, can be fixed in the guide rail 200. When the electromagnet 11 is in a state of rest 2, the sliding element 20 is freely movable in the guide rail 200. The rest state 2 of the electromagnet 11 can, for example Figure 1a be accepted. In the Figure 1c the electromagnet 11 can be in the operating state 1 as well as in the idle state 2. The electromagnet 11 can be transferred into the operating state 1 or into the idle state 2 by actuating a common switch and / or a respective switch, not shown, which can be arranged in the guide rail 200, for example. The operating state 1 of the electromagnet 11 is exemplified by a solid line in FIG Figure 3c shown, the rest state 2 of the electromagnet 11 with a dashed line in the Figure 3c is indicated.

the Figure 2 shows that the electromagnet 11 has a flat base body M, which can be arranged in an upper functional space 201 of the guide rail 200, so that in the operating state 1 of the electromagnet 11 the slide 20 can be moved past the locking device 10 in a lower guide space 202 of the guide rail 200, to move the door leaf 100 from the locking position II into the open position III.

As the Figure 2 Clearly, the guide rail 200 is divided into two spaces 201, 202, namely the upper functional space 201 for receiving the locking device 10 according to the invention and the lower guide space 202 for guiding the sliding element 20. The height of the functional space 201 can be approximately the height of the Guide space 202 correspond. When the electromagnet 11 is switched off, the sliding element 20 can slide back and forth past the locking device 10. When the electromagnet 11 is switched on, the sliding element 20 can slide past the locking device 10 only in the direction from the locking position II into the open position III of the door leaf 100. From the outermost open position III of the door leaf 100, however, the sliding element 20 does not get past the locking device 10, at least as long as the electromagnet 11 is in the operating state 1 (see the view of FIG Figure 1b ) is located.

In the rest state 2 of the electromagnet 11 of the armature 12, which is in the Figure 3c is shown schematically, have the effect that a blocking element, not shown in detail, is completely immersed within the functional space 201 in order not to enter the guide space 202 and not to impair the movement of the sliding element 20 therein. In the operating state 1 of the electromagnet 11, the armature 12 can cause the locking element to at least partially engage in the guide space 202 and / or to come to rest on at least one side of the sliding element 20 in order to move the sliding element 20 from the locking position II into the closed position I prevent.

the Figure 2 illustrates the concept of the invention, according to which the electromagnet 11 is designed with a flat base body M in such a way that the electromagnet 11 only occupies the upper functional space 201 of the guide rail 200, and that in the idle state 2 of the electromagnet 11 the sliding element 20 passes underneath the electromagnet 11 without hindrance the locking device 10 can move. The locking device 10 can thus be designed so that it can be driven over. Thus, several different positions of the door leaf 100 can be realized so that they can be fixed by adding one according to the invention in each case Locking device 10 can be arranged in a corresponding position in the guide rail 200. In addition, due to its size, the locking device 10 can even be retrofitted in existing guide rails 200 in order to upgrade the guide rails 200 in accordance with the invention. If, for example, the door leaf 100 was established in the locking position II with the aid of the locking device 10 according to the invention, as is the case with FIG Figure 1b shows, the door leaf 100 can be moved unhindered into the open position III, regardless of the state of the electromagnet 11. When transporting sparse objects through a doorway, a user, for example a removal worker, without having to put down the objects to be transported, the Press door leaf 100, for example with a shoulder, in the direction of open position III.

Like it Figures 3a, 3b and 3c show in a perspective, a frontal and a side view of the base body M, the base body M can have a height h which is approx. 25% to approx. 50%, preferably approx. 40% of the height H of the guide rail 200. In addition, the base body M can have a length I which is approx. 2 to approx. 10, preferably approx. 7 times greater than its height h. The base body M can thus be received in the functional space 201 of the guide rail 200, although the installation space in the functional space 201 is limited in the vertical direction z, but not in the horizontal direction x along the guide rail 200. The base body M can furthermore have a width b, which is slightly smaller than the width of the guide rail 200. The electromagnet 11 can be pulled into the length I in order to reduce its overall height h. Thus, over the length I of the electromagnet 11, a sufficient holding force F can be generated for the sliding element 20, and over the small height h of the electromagnet 11 it is in the upper functional space 201 of the Guide rail 200 can be arranged. The sliding element 20 can thus move unhindered below the electromagnet 11 in the lower guide space 202 of the guide rail 200 without the electromagnet 11 standing in the way of the sliding element 20. In the operating state 1 of the electromagnet 11, the armature 12 can furthermore be activated in such a way that the sliding element 20 is stopped within the guide rail 200. The electromagnet 11 is designed as a pure holding magnet in order to generate an adjustable hold-open width w and to stop the sliding element 20 only when it approaches the hold-open device 10 without affecting further electronic components of the door leaf 100.

As is the case with the Figures 3a and 3b and in the following the Figures 4 to 9 show, the electromagnet 11 may have a magnetic core 18. Furthermore, it is conceivable that a housing 19 can be provided for the electromagnet 11, which, according to an exemplary embodiment of the invention, can be designed as a magnetic yoke body.

As is also the case with the Figure 4 shows, according to an exemplary embodiment of the invention, the electromagnet 11 can be composed of at least two coils S1, S2, S3, S4 arranged next to one another. the Figure 4 shows four coils S1, S2, S3, S4 arranged side by side by way of example only. With a variable number of S1, S2, S3, S4, the holding force F of the electromagnet 11 can be set, for example increased, in steps. This can be advantageous in order to use the locking device 10 according to the invention with different designs of the door leaf 100, the frame-side guide rail 200, a drive and / or a place of use of the door leaf 100 to be able to use. In this way, a cross-model locking device 10 can be provided for different applications, which can be assembled in the manner of a kit.

How it continues the Figure 5 shows, according to a further exemplary embodiment of the invention, the electromagnet 11 can have at least one electrically insulating cover plate 13 at the end in order to create a magnetic flux m and to create a hold-open width w of the electromagnet 11 (cf. Figure 6 ). In addition, the depth of penetration of the electromagnetic field into the armature 12 can thus be at least partially influenced. In this way, a pure holding magnet can advantageously be realized.

As is also the case with the Figure 6 shows, the armature 12 according to an embodiment of the invention can be sleeve-like, preferably with an end armature plate 14 and a circumferential, cylindrical jacket-shaped casing element 15, in order to delimit the electromagnet 11 axially and at least partially radially. Thus, the holding force F of the electromagnet 11 can be increased even with a small parking width w.

As is the case with the Figure 7 shows, according to a further embodiment of the invention, the electromagnet 11 or the armature 12 have a plunger 16 in order to release the armature 12 from the electromagnet 11 when the electromagnet 11 is transferred from the operating state 1 to the rest state 2 against residual magnetization in the armature 12.

Like it Figure 8 In the following shows, the plunger 16 can be resiliently applied with a release force L in order to facilitate the release of the armature 12 from the electromagnet 11 when the electromagnet 11 is transferred from the operating state 1 to the rest state 2 against residual magnetization in the armature 12. Rapid switching of the locking device 10 can thus be made possible.

the Figure 9 shows another embodiment of a locking device 10 with an electromagnet 11, which has a coil 17, the turns of which are arranged around a vertical axis z of the electromagnet 11 or the guide rail 200. As a result, the installation space along the guide rail 200 can be used in an advantageous manner. In this case, a holding force F is generated which runs perpendicular to the direction of extension x of the electromagnet 11 or the guide rail 200. In order to transmit the holding force F to the armature 12, the armature 12 can be arranged below the electromagnet 11. The armature 12 can have a flat body A, which can be arranged parallel to the longitudinal direction x of the electromagnet 11 or the guide rail 200. As a result, the holding force F of the electromagnet 11 with turns around its vertical axis z can provide a frictional connection for the armature 12. With a corresponding number of turns and with a correspondingly long armature 12, the frictional engagement can exert a reliable holding force F on the armature 12. With an increasing number of turns, a holding force F can advantageously be provided without magnetization.

Furthermore, the Figure 10 Another embodiment of the invention, according to which the electromagnet 11 as a rotor of a linear motor can be designed to actively control the movement of the armature 12. In this exemplary embodiment, the electromagnet 11 and the armature 12 move together. As a result, the position of the armature 12 together with the position of the electromagnet 11 can be set variably and continuously in both directions. A continuously adjustable holding force F can thus be implemented as desired and depending on the position of the door leaf 100. The possible uses of the locking device 10 can thus be expanded.

the Figure 11 Finally, FIG. 4 shows a door system with a door leaf 100 which is arranged pivotably on a door frame 101. A guide rail 200 according to the invention for guiding the door leaf 100 between an open position III and a closed position I can be arranged on the door frame 101, having at least one locking device 10 for locking the door leaf 100 in a locking position II between the open position III and the closed position I, which like above using the Figures 1a to 10 may be designed as described.

The preceding description of the Figures 1 to 11 describes the present invention exclusively in the context of examples. Of course, individual features of the embodiments can, insofar as it is technically sensible, be freely combined with one another without departing from the scope of the invention.

List of reference symbols

10

Locking device

11

Electromagnet

12th

anchor

13th

Cover panel

14th

Anchor plate

15th

Shell element

16

Plunger

17th

Kitchen sink

18th

core

19th

casing

20th

Sliding element

30th

Lever element

100

Door leaf

101

Door frame

200

Guide rail

201

Function room

202

Leadership room

1

Operating condition

2

Hibernation

I.

Closed position

II

Locking position

III

Open position

A.

flat body of the anchor

H

Height of the guide rail

F.

Holding power

L.

Solvency

M.

Base body

S1

Kitchen sink

S2

Kitchen sink

S3

Kitchen sink

S4

Kitchen sink

b

Width of the main body

H

Height of the main body

I.

Length of the main body

m

Magnetic flux

w

Hold-open distance

x

Longitudinal axis of the electromagnet or the guide rail

y

Transverse axis of the electromagnet or the guide rail

z

Vertical axis of the electromagnet or the guide rail

Claims (8)

1. A hold-open device (10) for holding open a door leaf (100) in a hold-open position (II) between an open position (III) and a close position (I),
   wherein, by means of a slide element (20) of the hold-open device (10), which length-displaceably engages in a guide rail (200) of the hold-open device (10), the door leaf (100) is movably guidable between the open position (III) and the close position (I),
   including:

   an electromagnet (11) with an armature (12), which can be brought into mechanical operative connection with the slide element (20) for retaining the door leaf (100), for stopping the door leaf (100) in the hold-open position (II) between the open position (III) and the close position (I),

   wherein, in an operating condition (1) of the electromagnet (11), the slide element (20) is arrestable in the guide rail (200),

   and in an idle condition (2) of the electromagnet (11), the slide element (20) is freely movable in the guide rail (200),

   wherein the electromagnet (11) includes a flat basic body (M), which can be disposed in an upper functional space (201) of the guide rail (200), so that, in the operating condition (1) of the electromagnet (11), the slide element (20), in a lower guide space (202) of the guide rail (200), is movable past the hold-open device (100), for transferring the door leaf (100) from the hold-open position (II) to the open position (III), wherein the electromagnet (11) is formed as a clamping magnet.
2. The hold-open device (10) according to claim 1,
   characterized in
   that the basic body (M) has a height (h), which is approx. 25 % to approx. 50 %, preferably approx. 40 % of the height (H) of the guide rail (200),
   and/or in that the basic body (M) has a length (I), which is approx. 2 to approx. 10 times, preferably approx. 7 times larger than the height (h) thereof.
3. The hold-open device (10) according to any of the preceding claims.
   characterized in
   that the electromagnet (11) is composed of at least two coils (S1, S2, S3, S4) disposed next to each other.
4. The hold-open device (10) according to any of the preceding claims.
   characterized in
   that, at the end side, the electromagnet (11) includes at least one electric insulating cover disc (13), for creating magnetic flow (m) and for determining an arresting width (w) of the electromagnet (11).
5. The hold-open device (10) according to any of the preceding claims.
   characterized in
   that the armature (12) is formed shell-like, preferably with an armature plate (14) and an envelope element (15), for axially and at least partially radially delimiting the electromagnet (11).
6. The hold-open device (10) according to any of the preceding claims.
   characterized in
   that the electromagnet (11) or the armature (12) has a tappet (16), which preferably is spring-elastically loaded with a release force (L), and/or an elastic tappet (16), for releasing the armature (12) from the electromagnet (11) against a residual magnetisation in the armature (12), when transferring the electromagnet (11) from the operating condition (1) to the idle condition (2).
7. The hold-open device (10) according to any of the preceding claims.
   characterized in
   that the electromagnet (11) has a coil (17), the windings thereof being disposed about a high axis (z) of the electromagnet (11),
   and/or the armature (12) has a flat body (A), which is disposed parallel to the longitudinal extension direction (x) of the electromagnet (11).
8. The hold-open device (10) according to any of the preceding claims.
   characterized in
   that the electromagnet (11) is formed as a rotor of a linear motor for actively controlling the movement of the armature (12) and/or in that the electromagnet (11) includes a housing (19), which is formed as a magnetic keeper.

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