Sliding door system

Abstract

Sliding door system (1) with at least one longitudinally extending track (3) and a door leaf (100) guided thereon by at least one carriage (4), preferably guided by at least two carriages, wherein the at least one carriage (4) has a trolley (9) guided in the track (3) by means of at least one roller and a fastening device (11) connected to the trolley (9), by means of which the trolley (5) is attached to an upper edge (100a) of the door leaf (100), wherein the fastening device has an upwardly projecting fastening section, characterized in that the fastening device has in the fastening section a recess having an opening directed in the longitudinal direction of the track for receiving a fastening part of the trolley, wherein the recess extends in the longitudinal direction of the track and in a vertical direction,wherein a projection extending into the recess is formed and the recess forms a seat for the fastening part bounded by the projection and a section of the fastening section opposite the projection, wherein the fastening part can be inserted through the opening into the recess and moved into the seat, and wherein the fastening part of the carriage can be fastened to the fastening device in a position adjacent to the seat by means of at least one fastening means.

Description

[0001] The present invention relates to a sliding door system with a guide rail extending in a longitudinal direction and a door leaf guided thereon by means of at least one drive, wherein the drive has a carriage guided in the guide rail and a fastening device connected to the carriage, by means of which the drive is fastened to an upper edge of the door leaf.

[0002] Sliding door systems of this type are well known. The door leaf is supported by the track via the carriage, so the weight of the door leaf is transferred to the track via the carriage. The carriage rolls along one or more rollers in a track of the track.

[0003] There are sliding door systems in which the track has a track for the carriage, with the carriage of the carriage having one or more rollers on one side that are guided in the track. In such sliding door systems, the door leaf with the mounted carriage is usually hung into the track from the long side of the track. Such a sliding door system is known, for example, from DE 10 2011 012 286 A1, owned by the applicant.

[0004] There are also sliding door systems in which the carriages of a running gear have rollers on both sides, with the track having two parallel tracks on which the carriage rolls with the rollers. With such sliding door systems, the running gears usually have to be inserted at one end of the track, as it is not possible to insert them sideways into the track from the long side of the track. Such carriages are usually used with very large and heavy door leaves. The problem when installing the door leaves is that they are often difficult to handle due to their very high weight. With one type of sliding door system, the door leaves are attached to the carriages from below, which means that the door leaves have to be lifted.However, particularly with glass sliding door systems, there is the problem that these door leaves are particularly heavy and, moreover, very fragile, so that even a slight impact on a corner of the door leaf can lead to damage. DE 10 2016 202 774 discloses a sliding door system of the type mentioned above, in which the carriage can be connected to a fastening device attached to an upper edge of the door leaf by sliding it in the longitudinal direction of the guide rail. The connection between the carriage and the fastening device allows for height adjustment, as the carriage and the fastening device are movable relative to each other in the vertical direction.

[0005] Furthermore, EP 1 533 456 A1 discloses a sliding door with a guide rail extending in a longitudinal direction and a door leaf guided thereon by a running gear. The running gear has a carriage guided in the guide rail by means of rollers and a fastening device connected to the carriage, via which the running gear is fastened to an upper edge of the door leaf. The fastening device is arranged at a height between the rollers. DE 10 2007 038 842 A1 discloses another sliding door suspension with at least two carriages, and another sliding door system is known from US 904 393 A. AU 438 982 B2 further discloses a sliding door system with the features of the preamble of claim 1.

[0006] In sliding door systems where the door leaf with mounted carriage is hung into the track from the long side of the track during installation, the carriage is often pivoted into the track below a safety device formed by part of the track. To do this, the door leaf must be set at an angle from the long side of the track, with the door leaf extending diagonally away from the long side. To enable this type of pivoting, however, there must be sufficient space in the track for the carriage to pivot. The track is therefore usually a relatively large distance from a wall to which the track is attached, so that the door leaf, which is guided in the track, is also a relatively large distance from the wall.Hanging the door leaf in a different direction, in which the door leaf extends diagonally in the direction away from the long side, is not possible due to the wall along which the door leaf runs.

[0007] However, the existing runners are usually relatively large to support the heavy weight of very large sliding doors. The guide rails must also have a correspondingly large cross-section.

[0008] However, for smaller sliding doors or sliding doors made of lighter glass, the very large drives known from the state of the art are not absolutely necessary.

[0009] It is therefore the object of the present invention to provide a more compact sliding door system while maintaining the convenient assembly of the sliding door systems known from the prior art.

[0010] The sliding door system according to the invention is defined by the features of claim 1.

[0011] In the sliding door system according to the invention with at least one guide rail extending in a longitudinal direction and a door leaf guided thereon with at least one drive, preferably with at least two drives, the at least one drive has a carriage guided in the guide rail by means of at least one roller and a fastening device connected to the carriage, wherein the at least one drive is fastened to an upper edge of the door leaf, wherein the fastening device has an upwardly projecting fastening section.The invention is characterized in that the fastening device has a recess in the fastening section, said recess having an opening directed in the longitudinal direction of the guide rail, for receiving a fastening part of the carriage, wherein the recess extends in the longitudinal direction of the guide rail and in the vertical direction and wherein a projection projecting into the recess is formed and the recess forms a seat for the fastening part delimited by the projection and a section of the fastening section opposite the projection, wherein the fastening part of the carriage can be inserted through the opening into the recess and moved into the seat and wherein the fastening part of the carriage can be fastened to the fastening device in a position resting against the seat via at least one fastening means.

[0012] The sliding door system according to the invention enables the carriage to be easily inserted into a compactly designed guide rail and then moved in the longitudinal direction of the guide rail to be connected to the fastening device of the door leaf. Due to the opening of the recess directed in the longitudinal direction of the guide rail, the fastening part of the carriage can be easily inserted into the recess and moved into the seat when the carriage is moved in the guide rail. By fastening the fastening part of the carriage in a position resting against the seat, the weight of the door leaf can be advantageously transferred to the carriage and thus to the guide rail via the fastening device.

[0013] The projection and the section opposite the projection can be connected to form the seat, whereby, for example, the seat can have an arcuate shape. In principle, the shape of the seat can be adapted to the shape of the fastening part.

[0014] In the position of the fastening part of the carriage in contact with the seat, the projection and the section of the fastening section opposite the projection can prevent a relative movement of the carriage and the fastening device in a form-fitting manner in that the projection and the section opposite the projection bear against the fastening part.

[0015] The recess can generally have an L-shape. When the door leaf is suspended in the track, the recess extends from the opening, initially in the longitudinal direction of the track and then vertically upwards. In this position, the mounting section protruding upwards (i.e., vertically) forms a kind of undercut through the projection, behind which the carriage can hook with the mounting part.

[0016] The arrangement according to the invention also makes it possible for the fastening means to provide only a small force for fastening the carriage to the fastening device, since the recess and the seat formed therein form a positive connection between the carriage and the fastening device, wherein the weight force is transmitted from the fastening device to the carriage via a positive connection.

[0017] The carriage is guided in the guide rail by at least one roller that can roll on at least one track of the guide rail. Preferably, the carriage has one or more rollers on one side only, which are guided in a track of the guide rail. This allows a particularly compact design of the guide rail and running gear. The guide rail can have a rail projection that extends in the longitudinal direction of the guide rail and acts as a detachment lock for the carriage. The rail projection is arranged, for example, vertically above the track. The distance in the vertical direction between the rail projection and the track can be selected such that the roller can be pivoted in under the rail projection when the carriage is inserted without a door leaf.The rail projection can also be positioned so close to the track that, when the carriage is inserted, only a few millimeters or even less than one millimeter remains between the roller and the track, making it impossible for the carriage to pivot in. In this case, the carriage must be inserted from one of the longitudinal ends of the track.

[0018] For the purposes of the invention, the door leaf refers to the plate-shaped part of the sliding door / door panel. The running gear is an attachment to the door leaf and therefore not considered part of the door leaf.

[0019] The sliding door system according to the invention is particularly suitable for glass doors in which the door leaf is made of glass or largely of glass.

[0020] The fastening part is designed as a cylindrical shaft extending horizontally transversely to the longitudinal direction of the guide rail, with the at least one roller being connected to the cylindrical shaft directly or via a roller block. The arrangement in the horizontal direction transversely to the longitudinal direction of the guide rail is present when the door leaf is in the suspended state.

[0021] The design of the fastening part as a cylindrical axis enables a structurally simple design of the fastening part, allowing the fastening part to be easily inserted into the recess. Furthermore, when the fastening part is arranged in the seat, it can advantageously be fastened independently of its rotational orientation.

[0022] In the sliding door system according to the invention, a roller axis can be arranged eccentrically to a central axis of the cylindrical axis. This makes it possible for the position of the roller to be adjusted in the vertical direction (when the door leaf is suspended in the guide rail) by rotating the fastening part about the central axis of the cylindrical axis, thus forming a height adjustment device. In other words, for height adjustment, it is only necessary to rotate the fastening part and fix it in a desired position using at least one fastening means.

[0023] It is provided that the cylindrical axis is rotatable in the seat in a released state, wherein the axis can be fastened in a rotational position in the seat via the at least one fastening means.

[0024] According to the invention, the at least one fastening means is a screw nut that can be screwed onto a thread of the cylindrical shaft. The screw nut can generate a frictional force with a surface of the fastening section, which fixes the fastening part. This allows for the fastening part to be attached in a simple manner.

[0025] The opening of the recess can be arranged in the longitudinal direction of the guide rail facing the first side edge of the door leaf.

[0026] In a preferred embodiment of the invention, the recess is arranged in a central section of the fastening section, with a locking receptacle for receiving a bolt of a locking device that is at least indirectly attached to or in the guide rail being formed at the opening in the direction away from the recess. In this way, the carriage according to the invention can be advantageously combined with a locking device for locking the sliding door system, while maintaining a compact design of the carriage and the sliding door system.

[0027] It is preferably provided that the latch receptacle has a receiving plate arranged laterally on the fastening section and extending parallel to the fastening section. The receiving plate can be advantageously attached to the fastening device, for example, even after the door leaf has been hung, while maintaining a compact design of the drive mechanism.

[0028] The receiving plate can be provided with a bolt retainer. When the locking device is closed, the bolt retainer can hold back the bolt received in the bolt retraction, thus locking the door leaf.

[0029] The locking device formed by the locking device, which can advantageously lock the door leaf in a closed position, preferably has the following configuration.

[0030] The bolt receptacle can further comprise a bolt actuator spaced apart from the bolt actuator. The bolt can be inserted between the bolt actuator and the bolt retainer when the door leaf is closed, with the bolt actuator guiding the bolt into a retaining position when the door leaf is closed, counter to an automatic return force. In the retaining position, the bolt engages behind the bolt retainer, with the locking device comprising a bolt retaining device that holds the bolt in the retaining position when the lock device is in the locked state.

[0031] Because the bolt actuator moves the bolt into the retaining position when the door leaf closes, a separate drive for the bolt is not required, thus reducing the technical complexity of the locking device. The bolt is driven by the closing movement of the door. For example, the bolt actuator can push the bolt into the retaining position.

[0032] The sliding door system with locking device according to the invention has the special feature that the bolt is moved into the retaining position each time the door leaf is closed. However, locking only occurs through the actuation of the bolt holding device, which holds the bolt in the retaining position when the locking device is locked. This has the particular advantage that the movement of the bolt into the retaining position and the actual locking process by holding the bolt via the bolt holding device are two different processes. Opening the door leaf is possible when the bolt holding device is not holding the bolt, so that when the door leaf is opened, the bolt is returned from the retaining position to a home position by means of the automatic return force.Without any further external influence, the bolt is always in its home position after the door leaf has been opened, so that the door leaf can then be closed without any problems. There is therefore no risk of the bolt being in its retaining position when the door leaf is open, which could lead to an unintentional collision between the bolt receiver and the bolt. In the sliding door system with a locking device according to the invention, the bolt holding device can also be designed such that the bolt holding device can be activated before the door leaf is closed, and the bolt can then be raised from the home position into the retaining position by the bolt actuator, despite the holding force of the bolt holding device, and can then be held in the retaining position by the bolt holding device.This can be possible, for example, with designs of the bolt holding device in which the bolt holding device holds the bolt by means of a frictional connection. Designs of the bolt holding device are also possible in which the bolt holding device holds the bolt in the retaining position by means of a positive locking connection. With designs of this type, it is also possible to activate the bolt holding device before the door leaf is closed, whereby the bolt can then snap into the bolt holding device when the door is closed. Activating the bolt holding device before the door leaf is closed has the advantage that the locking process of the door leaf can be initiated regardless of its position, ensuring that the door leaf is locked after the next movement into its closed position.

[0033] In the sliding door system with a locking device according to the invention, the bolt can thus engage in the bolt receptacle when the door leaf is closed, and when the locking device is locked, the bolt receptacle retains the bolt. It can be provided that the bolt is arranged between the bolt actuator and the bolt retainer in the retaining position.

[0034] The automatic return force can be provided by gravity, for example. Alternatively, a spring device can be arranged on the latch to pull the latch toward its home position.

[0035] In the sliding door system with a locking device according to the invention, it can be provided that the locking actuator guides the locking bolt from the retaining position to the home position when the door leaf is opened with the locking device unlocked, with the automatic return force pressing the locking bolt against the locking actuator. This advantageously enables the locking bolt to be guided when the door leaf is opened, since the return force ensures that the locking bolt always rests against the locking actuator.

[0036] The latch holding device can be electrically actuated. When the latch holding device is de-energized, the latch releases the latch, allowing the latch to return to its home position due to the self-return force when the door leaf is opened. Thus, for example, in the event of a power failure, the door leaf of the sliding door system according to the invention can always be opened.

[0037] Preferably, the bolt is provided with a pivot bearing, and the bolt actuator guides the bolt in a pivoting movement. This allows the bolt to be guided in a particularly advantageous manner into the retaining position, in which the bolt engages behind the bolt retainer.

[0038] The pivot bearing can, for example, have a rotation axis arranged horizontally transversely to the longitudinal direction of the guide rail. In other words, the bolt can be pivoted in a vertical plane extending in the longitudinal direction of the guide rail. In this case, the bolt actuator and the bolt retainer are arranged vertically spaced apart, preferably one above the other.

[0039] Preferably, the bolt holding device is designed as a controllable magnet, and the bolt is at least partially made of a ferromagnetic material. The invention can therefore advantageously provide for the bolt holding device to magnetically hold the bolt in the retained position. As a result, the locking device can advantageously be operated electrically using an electromagnet. For example, it can be provided that the magnet, upon actuation, attracts the bolt until the bolt rests against the magnet. As a result, the bolt can be held in the retained position in a particularly advantageous manner by means of the bolt holding device. As a result of the bolt resting against the magnet, a frictional force is generated between the magnet and the bolt, as a result of which the bolt can advantageously be held in the retained position.Preferably, the magnet attracts the bolt in a direction transverse to the plane in which the bolt can be moved from the home position to the retaining position. With a pivotable bolt, the magnet thus attracts the bolt transverse to the pivoting plane. Thus, the magnet acts transversely to the direction in which the automatic return force acts. The frictional force generated between the magnet and the bolt thus counteracts the automatic return force. Such an arrangement has the particular advantage that the bolt is advantageously released when the magnet is deactivated.

[0040] In embodiments of the sliding door system according to the invention in which the bolt holding device is designed as a controllable magnet, the bolt holding device can advantageously be activated before the door leaf is closed and the bolt can be lifted from the basic position into the retaining position by the bolt actuator despite the holding force of the bolt holding device.

[0041] In a particularly preferred embodiment of the invention, the locking device is attached to a limiting device for limiting the travel path of the door leaf. The locking device can thus form a single structural unit with the limiting device. This simplifies the assembly of the sliding door system according to the invention, since only the combination of limiting device and locking device needs to be attached to the track. Furthermore, installation errors are avoided, as it ensures that the locking device is in the correct position with respect to the end position of the door leaf specified by the limiting device.

[0042] Preferably, the latch actuator and the latch retainer are designed as projections that preferably extend horizontally transversely to the longitudinal direction of the guide rail. In this way, the latch actuator and the latch retainer can be provided in a structurally simple manner.

[0043] Preferably, the bolt actuator and the bolt retainer are configured symmetrically to a center plane of the bolt receptacle extending longitudinally of the bolt receptacle. Due to the symmetrical arrangement, the mounting plate of the bolt receptacle can be advantageously used on a left- or right-hand drive by rotating the mounting plate accordingly.

[0044] Preferably, the fastening device is designed as a clamping device, with a main body of the limiting device forming clamping jaws on both sides of the door leaf, with a clamping plate displaceable toward the door leaf being arranged on one clamping jaw. Such a fastening device can be attached in a particularly advantageous manner to a door leaf, in particular to a glass door leaf, even with different glass thicknesses.

[0045] Preferably, the main body is an extruded profile, preferably an extruded aluminum profile. This allows the main body and thus the fastening device to be manufactured in a simple manner.

[0046] The clamping plate can be made of sheet metal, for example, and can be moved toward the door leaf using screws to provide the clamping force. For the main body made of an extruded profile, the recess can be created by milling.

[0047] Preferably, the clamping jaws each have a thickened portion. This allows for greater stability of the clamping jaw, particularly in the transition area to the rest of the main body.

[0048] The fastening section can be arranged to connect vertically to one of the clamping jaws. The vertical direction refers to the hinged state of the door leaf.

[0049] In a preferred embodiment of the invention, a damper unit with a retraction function is arranged in the guide rail and a coupler is arranged on the running gear, which coupler engages with an engagement part of the damper unit in a locking manner, wherein the damper unit initially brakes the door leaf when it is moved towards an end position and then drives it into the end position, and wherein the coupler is adjustable in the vertical direction. The vertical direction refers to the hinged state of the door leaf. By means of the damper unit with a retraction function, it can advantageously be made possible that the door leaf can initially be moved freely when being moved into the end position, is then braked by the damper unit with a retraction function, wherein the coupler engages with an engagement part in a locking manner and is finally driven gently into its end position by the damper unit with a retraction function.By adjusting the coupler in the vertical direction, the system formed by the damper unit and the coupler can be advantageously adapted to the door leaf adjusted by means of the height adjustment.

[0050] The damper unit can be attached or fixed to the limiting device to limit the travel of the door leaf. This allows the damper unit and limiting device to form a single structural unit, simplifying assembly and preventing installation errors. The damper unit can be attached to the limiting device, for example, via a dowel pin. In one embodiment of the sliding door system with a locking device, the structural unit can consist of the damper unit, limiting device, and locking device.

[0051] The coupler can have a mounting section with a vertically extending slot through which a screw engages. The vertical direction refers to the hinged state of the door leaf. This allows for easy vertical adjustment of the coupler.

[0052] Within the scope of the invention, directional information such as up, horizontal, vertical, etc., unless otherwise described, is always given under the assumption that the door leaf is in the suspended state in the guide rail.

[0053] In the following, embodiments of the invention are explained in more detail with reference to the following figures.

[0054] It shows Figure 1 shows a schematic, perspective view of a first embodiment of the sliding door system according to the invention, Figures 2a, 2b show schematic, perspective views of the door leaf with the drive mechanism attached to the door leaf of the first embodiment of the sliding door system according to the invention, Figure 3 shows a schematic plan view of the door leaf of the Fig. 2a , 2b in the longitudinal direction of the guide rail, Figure 4 is a schematic, perspective view of a door leaf with a drive mechanism attached to the door leaf of a second embodiment of the sliding door system according to the invention, Figure 5 is a schematic plan view of the door leaf of the Fig. 3 in the longitudinal direction of the guide rail, Figure 6 shows a schematic side view of a door leaf with attached drive and limiting device of a third embodiment of a sliding door system according to the invention and Figure 7 shows a further schematic plan view of the Figure 6door leaf shown.

[0055] In Figure 1 a sliding door system 1 according to the invention is shown schematically in a perspective view.

[0056] The sliding door system 1 according to the invention has a longitudinally extending guide rail 3 in which a door leaf with a Figure 1 The longitudinal direction is indicated by a double arrow. The guide rail 3 has a substantially C-shaped cross-section, with the interior of the guide rail 3 being concealed from the viewer by a cover 5.

[0057] The guide rail 3 forms a track 7 for the drive 4. Above the track 7, a rail projection 6 is arranged, which extends in the longitudinal direction of the guide rail 3 and forms a detachment protection for the door leaf 100.

[0058] The drive 4 consists of a carriage 9, which is attached to a fastening device 11. The drive 4 is attached to an upper edge 100a of the door leaf 100 via the fastening device 11.

[0059] The fastening device has an upwardly projecting fastening section 12. As best seen Figure 2b As can be seen, the fastening section 12 has a recess 13 which has an opening 15 directed in the longitudinal direction of the guide rail. The recess 13 has an approximately L-shaped profile, so that in the Figure 2b illustrated upright position of the door leaf 100, which corresponds to the position of the door leaf 100 in the suspended state, the recess 13 initially runs substantially in the longitudinal direction of the guide rail 3 and then vertically upwards.

[0060] This forms a projection 17 that projects into the recess 13. The projection 17 and a section 19 of the fastening section 12 opposite the projection 17 define a seat 21 for a fastening part 23 of the carriage 9. The fastening part 23 of the carriage 9, which can be designed, for example, as a cylindrical axle, can be inserted through the opening 15 into the recess 13 and pushed into the seat 21 so that the seat 21 rests against the fastening part 23. The carriage 9 can be fastened to the fastening section 12 by means of a fastening means 25 in the form of a nut. When the door leaf 100 is suspended, the weight of the door leaf 100 is transferred in a form-fitting manner via the seat 21 to the carriage 9.

[0061] How best to Figure 3As can be seen from FIG. 1, which shows a schematic view of the door leaf 100 in the longitudinal direction of the guide rail 3, the fastening device 11 is designed as a clamping device, with a main body 11a forming clamping jaws 11b, 11c on both sides of the door leaf 100. For stabilization, the clamping jaws 11b, 11c each have a thickened portion.

[0062] A clamping plate 11d is arranged on one of the clamping jaws 11c on the side facing the door leaf 100, wherein the clamping plate 11d can be displaced in the direction of the door leaf 100 by means of screws 11e to apply the clamping force.

[0063] The carriage 9 has a roller 9a, which is fastened to a roller block 24. The roller block 24 is connected to the fastening part 23, forming an eccentric arrangement of the roller 9a, with the roller axis B being arranged eccentrically to the central axis A of the fastening part 23. By loosening the fastening means 25, the fastening part 23 can be rotated in the seat 21, so that the position of the roller 9a can be changed in the vertical direction and thus a height adjustment of the door leaf 100 is enabled. After the desired adjustment of the roller 9a, the carriage 9 can be reattached to the fastening device 11 using the fastening means 25.

[0064] As from Figures 2a and 2bAs can be seen, the opening 15 is arranged in the longitudinal direction of the guide rail 3 facing a first side edge 100b of the door leaf, whereby the carriage 9 can advantageously be inserted into the opening 15 after being inserted into the guide rail 3 and can be fastened to the fastening device 11.

[0065] As from Figure 3 As can be seen, the fastening section 12 extends vertically adjacent to the clamping jaw 11b. This allows for a particularly compact design of the carriage 9 and achieves a high level of stability of the fastening device 11. The main body 11a of the fastening device 11, which has the clamping jaws 11b, 11c and the fastening section 12, can be formed from an extruded profile, wherein the recess 13 can be milled out.

[0066] In Figure 4A second embodiment of the sliding door system according to the invention is shown schematically in a perspective view.

[0067] The guide rail 3 is in Fig. 4 Shown without the cover 5. The carriage 4 arranged at the upper edge of the door leaf 100 has essentially the same structure as the previously described carriage. The sliding door system 1 differs from the previously described sliding door system in that a damper unit 27 with a retraction function is arranged in the guide rail 3, which interacts with a coupler 29 arranged on the carriage 4. For this purpose, the damper unit 27 has an engagement part 31 with which the coupler 29 engages in a locking manner.

[0068] The damper unit 27, together with a limiting device 33 that limits the travel path of the door leaf 100, forms a single structural unit, so that the damper unit 27 and the limiting device 33 can be mounted together in the guide rail 3. The damper unit 27 initially brakes the door leaf 100 as it moves toward its end position and then drives it into the end position, where it rests against the limiting device 33.

[0069] The coupler 29 is designed to be height-adjustable. For this purpose, the coupler 29 has an adjustment section 29a with a vertically extending elongated hole through which a screw 29b extends. The coupler 29 is attached to the carriage 4 via the screw. By loosening the screw, the adjustment section 29a and thus the coupler 29 can be adjusted vertically and secured in the desired position via the screw 29b.

[0070] In Figure 5 is a view of the embodiment of the Figure 4 in the longitudinal direction of the guide rail 3 in the state inserted into the guide rail 3.

[0071] As from the Figure 5 As can be seen, the guide rail 3 can be designed very compactly, since the running gear 4 is also very compact.

[0072] In Figure 5 The arrangement of the carriage 4 in the guide rail 3 and the design of the guide rail 3 are shown using the second embodiment. In principle, however, such a design is possible in all embodiments.

[0073] The roller 9a is inserted into the track 7. The running rail 3 has a rail projection 6 extending in the longitudinal direction of the running rail, which is located above the track 7 and forms a detachment lock for the carriage 9. The distance in the vertical direction between the rail projection 6 and the track 7 is selected such that the roller 9a can be pivoted into the running rail 3 when the carriage 9 is inserted. The carriage 9 is inserted when it is detached from the fastening device 11 and thus without the door leaf 100. After the carriage 9 has been inserted into the track 7, the carriage 9 can be moved in the longitudinal direction of the running rail 3 and, after being inserted into the recess 13, can be fastened to the fastening device 11.

[0074] In the Figures 6 and 7A further embodiment of a sliding door system according to the invention is shown. In this embodiment, in which the carriage has the previously described features, the sliding door system 1 according to the invention has a locking device 35. The locking device 35 has a locking receptacle 37 arranged on the carriage 4, as well as a locking device 39 fastened in the guide rail. The locking device 29 can, for example, form a structural unit together with a limiting device for limiting the travel path of the door leaf 100.

[0075] The locking receptacle has a receiving plate 37a which is attached to the fastening section 12 of the fastening device 11. In Figure 7 For clarity purposes, the locking mechanism 37 is not shown.

[0076] Via the bolt receptacle 37, a receiving space 37b for a bolt 41 of the locking device 39 is formed at the opening 15 of the recess 13 in the direction facing away from the recess 13.

[0077] The locking device 39 has a latch 41 which extends substantially in the longitudinal direction of the guide rail 3 and has a hook-shaped portion 41a at its end.

[0078] The bolt 41 is pivotally mounted in a vertical plane extending in the longitudinal direction of the guide rail 3. For this purpose, the bolt 41 has a pivot bearing 43 that engages the end of the bolt 41 opposite the hook-shaped section 41a. The pivot bearing 43 forms a rotation axis for the bolt 41 that extends horizontally transversely to the longitudinal direction of the guide rail 3. Furthermore, the bolt 41 has a guide device 45. The pivoting movement of the bolt 41 is guided and limited upwards and downwards by the guide device 45.

[0079] As from Figure 6As can be seen, the bolt 41 engages in the bolt receptacle 37. In the end position of the door leaf 100, the hook-shaped section 41a and a further part of the bolt are located in the receiving space 37b of the bolt receptacle 37. At the end facing the locking device 39, the bolt receptacle 37 has a bolt actuator 47 and a bolt retainer 49, which are arranged spaced apart from one another in the vertical direction. The locking device 39 further has a bolt holding device 51, which holds the bolt 41 in a retaining position when the door leaf 100 is locked. In this position, opening of the door leaf 100 is prevented by the bolt 41 interacting with the bolt retainer 49 via its hook-shaped section 41a.

[0080] In a state in which the bolt 41 has not yet been inserted into the bolt receptacle 37 and the bolt holding device 51 is deactivated, the bolt 41 is in a home position, into which the bolt 41 is moved due to an automatic return force generated by gravity. The home position is in Fig. 7 shown.

[0081] During the closing movement of the door leaf 100, the bolt 41 is first inserted with the hook-shaped portion 41a into the opening formed between the bolt actuator 47 and the bolt retainer 49. The bolt actuator 47 abuts the locking device 39 and, as the door leaf 100 continues to move toward the end position, pushes the bolt 41 upward into the retaining position, counter to the automatic return force, regardless of whether the bolt retaining device 51 is activated or deactivated.

[0082] The latch holding device 51 is designed as a controllable magnet. The latch 41 is made of a ferromagnetic material. When the magnet is actuated, it attracts the latch 41 horizontally, perpendicular to the longitudinal direction of the guide rail 3, so that the latch 41 partially rests against the magnet. This creates a frictional connection between the magnet and the latch 41, preventing the latch from returning to its home position due to the self-return force.

[0083] In the sliding door system 1 according to the invention, the latch holding device 51 can be activated even before the door leaf 100 closes. When the door leaf 100 closes, the latch 41 is then lifted from the home position into the retaining position by the latch actuator 47 despite the holding force of the latch holding device 51 and is then held in the retaining position by the latch holding device 51.

[0084] The activation of the latch holding device 51 before the door leaf 100 is closed has the advantage that the locking process of the door leaf 100 can be initiated regardless of its position, ensuring that the door leaf 100 is locked after the next movement into its closed position.

[0085] The latch actuator 47 and the latch retainer 49 are designed as projections that extend horizontally transversely to the longitudinal direction of the guide rail 3. The latch actuator 47 and the latch retainer 49 are designed symmetrically with respect to a horizontally extending center plane of the latch receptacle 37, which extends in the longitudinal direction of the latch receptacle 37 and thus in the longitudinal direction of the guide rail 3.

[0086] The locking device 19 of the sliding door system 1 according to the invention has the advantage that, for the locking process of the locking device 19, only the bolt holding device 51 needs to be actuated, which attracts the bolt 41 and holds it in the retaining position. The bolt holding device therefore does not have to cause any movement of the bolt 41. Rather, the movement of the bolt 41 is caused by the movement of the door leaf 100 or the automatic return force. This minimizes the technical complexity of the locking device 39. List of reference symbols

[0087] 1 Sliding door system 3 Track 4 Running gear 5 Cover 6 Rail projection 7 Track 9 Carriage 9a Roller 11 Fastening device 11a Main body 11b Clamping jaw 11c Clamping jaws 11d Clamping plate 11e Screws 12 Fastening section 13 Recess 15 Opening 17 Projection 19 Opposite section 21 Seat 23 Fastening part 24 Roller block 25 Fastening means 27 Damper unit 29 Coupler 29a Adjustment section 29b Screw 31 Engaging part 33 Limiting device 35 Locking device 37 Bolt receptacle 37a Receptacle plate 37b Space 39 Bolt device 41 Bolt 41a Hook-shaped section 43 Pivot bearing 45 Guide device 47Latch actuator 49Latch retainer 51Latch holding device 100Door leaf 100aUpper edge 100Top side edge ACenter axis BLooter axis

Claims

1. A sliding door system (1) comprising at least one running rail (3) extending in a longitudinal direction and a door leaf (100) guided thereon with at least one running gear (4), preferably with at least two running gears, wherein the at least one running gear (4) comprises a carriage (9) guided in the running rail (3) by means of at least one running roller (9a) and a fastening device (11) connected to the carriage (9), by means of which the running gear (4) is fastened to an upper edge (100a) of the door leaf (100), wherein the fastening device (11) comprising a fastening portion (12) protruding upwards, wherein the fastening device (11) comprises a recess (13) in the fastening portion (12) for receiving a fastening part (23) of the carriage (9) and having an opening (15) directed in the longitudinal direction of the running rail (3), the recess (13) extending in the longitudinal direction of the running rail (3) and in the vertical direction, wherein a protrusion (17) protruding into the recess (13) is formed and the recess (13) forms a seat (21) for the fastening part (24) delimited by the protrusion (17) and a portion (19) of the fastening portion (12) opposite the protrusion (17), wherein the fastening part (23) is insertable through the opening (15) into the recess (13) and movable into the seat (21), wherein the fastening part (23) of the carriage (9) is adapted to be fastened to the fastening device (11) by means of at least one fastening means (25) in a position abutting the seat (23), wherein the fastening part (23) is formed as a cylindrical axis extending in the horizontal direction transversely to the longitudinal direction of the running rail (3), wherein the at least one running roller (9a) is directly connected to the cylindrical axis or by means of a roller block (24), characterized in that the at least one fastening means (25) is a screw nut screwable on a thread of the cylindrical axis.

2. The sliding door system according to claim 1, characterized in that the at least one running roller (9a) is connected to the cylindrical axis by means of the roller block (24), wherein a running roller axis (B) is arranged eccentrically to a center axis (A) of the cylindrical axis.

3. The sliding door system according to claim 1 or 2, characterized in that the cylindrical axis is rotatable in the seat (21) in a released state, wherein the cylindrical axis is adapted to be fastened in a rotating position in the seat (21) by means of the at least one fastening means (25).

4. The sliding door system according to claim 1 or 3, characterized in that the opening (15) is arranged facing a first side edge (100b) of the door leaf (100) in the longitudinal direction of the running rail (3).

5. The sliding door system according to any one of claims 1 to 4, characterized in that the recess (13) is arranged in a center portion of the fastening portion (12), wherein a latch receptacle (37) for receiving a latch (41) of a latch device (39) at least indirectly fastened to or in the running rail (3) is formed at the opening (15) in a direction facing away from the recess (13), wherein preferably the latch receptacle (37) comprises a receiving plate (37a) arranged laterally on the fastening portion (12) and extending parallel to the fastening portion (12).

6. The sliding door system according to claim 5, characterized in that the receiving plate (37a) comprises a latch retainer (49).

7. The sliding door system according to claim 5 or 6, characterized in that the latch device (39) is fastened to a limiting device (33) for limiting the running path of the door leaf (100).

8. The sliding door system according to any one of claims 1 to 7, characterized in that the fastening device (11) is formed as a clamping device, wherein a main body (11a) of the fastening device (11) forms clamping jaws (11b, 11c) on both sides of the door leaf (100), wherein a clamping plate (11d) slidable towards the door leaf is arranged on a clamping jaw.

9. The sliding door system according to claim 8, characterized in that the main body (11a) is an extruded section, preferably an extruded aluminum section.

10. The sliding door system according to claim 8 or 9, characterized in that the clamping jaws (11b, 11c) each have a thickening.

11. The sliding door system according to any one of claims 8 to 10, characterized in that the fastening portion (12) adjoins one of the clamping jaws in a vertical direction.

12. The sliding door system according to any one of claims 1 to 11, characterized by damping unit (27) arranged in the running rail (3) having a retraction function and a coupler (29) arranged on the running gear (4), which interlocks with an engagement part (31) of the damping unit (27), wherein the damping unit (27) initially brakes the door leaf (100) when moving towards an end position and then drives it to the end position, wherein the coupler (29) is adjustable in a vertical direction, wherein preferably the damping unit (27) is fixed to the limiting device (33) for limiting the running path of the door leaf (100).

13. The sliding door system according to claim 12, characterized in that the coupler (29) comprises an adjustment portion (29a) with a vertically extending oblong hole through which a screw (29b) engages.

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