Telescopic push door assembly

Abstract

A telescopic sliding door system (1) with at least one first and one second door leaf (3, 5), wherein the second door leaf (5) is coupled to the first door leaf (3) via a traction drive (9) to perform a movement in the same direction and can be driven via the first door leaf (3), with a guide rail device (7) with at least one guide rail (21, 23) for each door leaf (3, 5), wherein the door leaves (3, 5) are each guided in the guide rail (21, 23) via at least one running gear (19), is characterized by a damper unit (31) with a retraction function, which first decelerates the first door leaf (3) when moving towards an end position and then drives it into the end position, and a further damper unit (31) with a retraction function, which first decelerates the second door leaf (5) when moving towards the end position and then drives it into the end position.

Description

[0001] The present invention relates to a telescopic sliding door system with at least a first and a second door leaf, wherein the second door leaf is coupled to the first door leaf to carry out a movement in the same direction and can be driven via the first door leaf.

[0002] EP 2 241 709 B1 discloses a telescopic sliding door system comprising a guide rail device with at least one guide rail for each door leaf, wherein the door leaves are each guided in the guide rail via at least one carriage. The previously known telescopic sliding door system comprises a toothed belt drive, wherein the first and second door leaves are connected via the toothed belt drive.

[0003] The toothed belt drive of the known telescopic sliding door system is arranged horizontally above the track (i.e., the toothed pulleys of the toothed belt drive have vertical axes of rotation), resulting in a very high and very wide track arrangement. Furthermore, the known telescopic sliding door system features tracks with two opposing tracks for the door leaf drives. Therefore, the installation of the known telescopic sliding door system is relatively complicated, and it is very difficult to access the interior of the track for maintenance purposes.

[0004] It is therefore the object of the present invention to provide a telescopic sliding door system of the type mentioned above that has a compact design. Furthermore, the telescopic sliding door system should be as easy to install as possible.

[0005] The invention is defined by the features of claim 1.

[0006] The telescopic sliding door system according to the invention comprises at least a first and a second door leaf, wherein the second door leaf is coupled to the first door leaf for executing a movement in the same direction and is drivable via the first door leaf. The telescopic sliding door system comprises a guide rail device with at least one guide rail for each door leaf, wherein the door leaves are each guided in the guide rail via at least one carriage.

[0007] The telescopic sliding door system according to the invention features a damper unit with a retraction function that initially decelerates the first door leaf as it moves toward an end position and then drives it into the end position. This ensures a smooth retraction of the first door leaf into the end position.

[0008] The telescopic sliding door system also features a damper unit with a retraction function, which initially decelerates the second door leaf as it moves toward an end position and then drives it into the end position. This prevents any kinetic energy from remaining when the second door leaf moves toward its end position, which could be transferred from the second door leaf to the traction drive and place strain on or damage it. Furthermore, it prevents the second door leaf from moving beyond this end position due to kinetic energy as it moves toward its end position, resulting in damage by hitting an obstacle.

[0009] According to the invention, two damper units are provided for each door leaf, with one damper unit acting at the end position of the respective door leaf, representing the closed position, and one damper unit acting at the end position of the respective door leaf, representing the open position. In such a telescopic sliding door system, four damper units with a retraction function are provided.

[0010] According to the invention, it can be provided that a traction drive with a first run and a second run connects the first and second door leaves. The invention can further provide that the first run runs above the second run and the traction drive is guided via a deflection device arranged on the second door leaf. The first run can be fixedly attached relative to the first and second door leaves, and the second run can be connected to the first door leaf. Alternatively, the second run can be fixedly attached relative to the first and second door leaves, and the first run can be connected to the first door leaf.

[0011] Within the scope of the present invention, the telescopic sliding door system is described using the directional specifications "longitudinal direction," "width direction," and "height direction." The longitudinal direction corresponds to the direction specified by the door leaves during the opening and closing movement. The length of the telescopic sliding door system is also the extension in the longitudinal direction. The width direction is the direction orthogonal to the longitudinal direction in the same horizontal plane. The width is the extension of the telescopic sliding door system in the width direction. The height direction runs orthogonal to the longitudinal direction in the same vertical plane, with the height being an extension of the telescopic sliding door system in the vertical direction.

[0012] By arranging the traction mechanism drive in such a way that the first run runs above the second run, a very narrow arrangement of the traction mechanism drive in the width direction is possible. This allows the running rail device to be designed with a relatively small width, which enables a compact design of the running rail device. The telescopic sliding door system according to the invention can be designed in an aesthetically pleasing manner, since the running rail device appears inconspicuous to the observer thanks to its compact design. The width of the running rail device is thus essentially determined by the distance between the first and second door leaves in the width direction and thus the space required by the running gears in this direction, and not by the width of the traction mechanism drive.

[0013] The inventive design of the traction drive ensures that the second door leaf can be driven by the first door leaf. In other words: the user only has to move the first door leaf and the second door leaf is automatically moved in the same direction. The movement transferred from the first door leaf to the second door leaf is reduced by means of the traction drive so that the second door leaf is moved at a different speed than the first door leaf. This ensures that the first and second door leaves reach their end positions at the same time, even though the first door leaf has traveled a longer distance. The second door leaf preferably moves at half the speed of the first door leaf.

[0014] Furthermore, the fact that the first run runs above the second run allows for simple assembly of the telescopic sliding door system according to the invention, since the traction mechanism is accessible from the side of the track device, so that the fixed fastening of the first run and the connection of the second run to the first door leaf, or the fixed fastening of the second run and the connection of the first run to the first door leaf, can be carried out easily from the long side of the track device. The long side of the track device is understood to be the side that is visible when looking at the door leaf from above.

[0015] By arranging the first run above the second run, easy height adjustment of the first and / or second door leaf is achieved without the traction mechanism of the traction drive threatening to slip out of the deflection devices. A particularly advantageous height adjustment option is provided by a deflection device that has vertically extending deflection pulleys, i.e., with horizontally extending axes of rotation, over which the traction mechanism of the traction drive is guided.

[0016] The door leaves can, for example, be glass door leaves.

[0017] Preferably, the first and second strands are arranged in a vertical plane extending in the longitudinal direction. This allows for a particularly narrow design of the traction drive in the width direction. In particular, by arranging the first and second strands in a vertical plane, the deflection device, for example, deflection pulleys, can also be arranged in this plane and thus very compactly with respect to the width direction of the track device.

[0018] The traction mechanism can in particular comprise a cable pull.

[0019] In a particularly preferred embodiment of the invention, it is provided that the second run is arranged horizontally (widthwise) next to the second door leaf. In other words: the second run runs in front of the second door leaf and thus between the first and second door leaves. In particular, it can be provided that the plane in which the first and second run run is arranged in front of the second door leaf and thus between the first and second door leaves. Because the second run is arranged in front of the door leaf, the running rail device, in which the traction mechanism is usually arranged in order to conceal it, can also be designed to be relatively compact in height. Since the door leaves usually extend partially into the running rail device, the second run can be arranged next to the part of the second door leaf extending into the running rail device.This means that the track system does not need to be taller, or only slightly taller, than conventional track systems used for sliding door systems without traction drive. This allows for the creation of a telescopic sliding door system with a particularly aesthetically pleasing track system.

[0020] Due to the course of the second run in front of the second door leaf, in particular between the first and the second door leaf, the second run is advantageously accessible from the long side when the second door leaf is in the suspended state, so that the second run is advantageously accessible, for example, for a connection to the first door leaf.

[0021] In a particularly preferred embodiment of the invention, the deflection device consists of two deflection devices, each of which is preferably arranged on a carriage of the second door leaf. This ensures that the deflection devices are advantageously guided during the movement of the second door, and the desired movement of the second door leaf relative to the first door leaf is achieved.

[0022] In one embodiment of the invention, the deflection device comprises an arm on which one of the deflection devices is arranged, wherein the arm projects in the longitudinal direction of the track device beyond the second door leaf in the direction of the closed position of the door leaves. This ensures that, in the closed position of the telescopic sliding door system, no or only a slight overlap of the first and second door leaves is necessary, while still allowing a connection between the first door leaf and the first or second strand.

[0023] Of course, it is also possible to arrange an arm on the first door leaf that projects longitudinally beyond the first door leaf in the opening direction, with the first door leaf being connected to the first and second strands via the arm. This also makes it possible to achieve a situation where no or only a slight overlap of the first and second door leaves is necessary in the closed position.

[0024] Preferably, the strand of the traction drive, which is fixedly mounted relative to the first and second door leaves, is secured in the guide rail device via a fastening device. This allows the strand to be fixedly mounted relative to the first and second door leaves in a particularly simple manner.

[0025] The fastening device can be provided with a tensioning device for tensioning the traction mechanism, which can be used to adjust the desired tension of the traction mechanism of the traction mechanism drive. The tensioning device can have a spring, which allows for a slight elongation of the traction mechanism, for example, when adjusting the height of the door leaf.

[0026] Furthermore, it can be provided that the fastening device is mounted so that it can be displaced in the longitudinal direction of the guide rail device and / or is attached to the guide rail of the second door leaf. Due to the displaceable arrangement of the fastening device in the guide rail device, it can be moved during assembly before final fastening, thus allowing easy adjustment of the traction mechanism drive during assembly.

[0027] In one embodiment of the telescopic sliding door system according to the invention, the first door leaf can have a door panel that has smaller dimensions in the vertical direction (height direction) than the door panel of the second door leaf. This makes it possible to ensure that the upper edge of the first door leaf runs below the second run, so that the second run can be reached in a particularly advantageous manner from the long side of the track. This makes it easy, for example, to connect the second run to the first door leaf during assembly. For example, a cable coupler can be attached to the upper edge of the door panel of the first door leaf. The cable coupler can also be part of a running gear of the first door leaf.

[0028] In a particularly preferred embodiment of the invention, the guide rail device has a first guide rail for the first door leaf and a second guide rail for the second door leaf, wherein the first and second guide rails can be mounted separately. As a result, the telescopic sliding door system according to the invention can be installed very easily, for example by first attaching the second guide rail for the second door leaf to the desired location. The second door leaf can then be hooked into the second guide rail and the traction drive can be installed. Of course, it is also possible for the traction drive to already be attached to the second door leaf via the deflection device.Because the second track is initially installed without the first track, the second track is freely accessible from the long side, allowing not only the second door leaf to be hung, but also, for example, the installation of the fastening device for one strand of the traction drive. The first track can then be installed and the first door leaf hung.

[0029] With such a design of the telescopic sliding door system, it is particularly advantageous if the second run is arranged in front of the second door leaf, so that it is accessible from the long side even when the first track is attached. This advantageously makes the second run accessible for connection to the first door leaf, so that after the first door leaf is hung, a connection between the first door leaf and the second run can be easily established.

[0030] The first door leaf can be connected to the second run, for example, via a traction mechanism coupler.

[0031] The design of the guide rail device consisting of a first and a second guide rail, which can be mounted separately, can also be implemented independently of the design of the traction mechanism drive or the arrangement of the damper units.

[0032] The invention thus also relates to a telescopic sliding door system with at least a first and a second door leaf and with a guide rail device with at least one guide rail for each door leaf, wherein the door leaves are each guided in the guide rail via at least one drive, in which the guide rail device has a first guide rail for the first door leaf and a second guide rail for the second door leaf, wherein the first and second guide rails can be mounted separately. It can be provided that the second door leaf is coupled to the first door leaf for performing a movement in the same direction and can be driven via the first door leaf.

[0033] In a telescopic sliding door system according to the invention, with or without a traction mechanism drive, it can be provided that the first and second guide rails each have a guide track for guiding the carriages of the door leaves, wherein the first guide rail has an access opening to the guide track that is aligned with an access opening to the guide track of the second guide rail. In other words: the access opening to the guide track of the first guide rail is on the side of the first guide rail facing away from the second guide rail. This makes it possible for the first and second door leaves to be suspended from their respective guide tracks from the long side of the guide rail device. Furthermore, the second guide rail is concealed by the first guide rail, so that only one cover is necessary to conceal the entire guide rail device in an aesthetically pleasing manner for a viewer from the long side.

[0034] According to the invention, two damper units with a retraction function are provided for each door leaf. One damper unit is arranged at the end position of the respective door leaf, representing the open position, and one damper unit is arranged at the end position of the respective door leaf, representing the closed position. This ensures that neither of the door leaves moves beyond the respective end position and becomes damaged during both the opening and closing movements. Furthermore, the door slowly retracts into the end position.

[0035] It can be provided that a limiting device is arranged on each damper unit to limit the travel of the respective door leaf. This limits the travel of each door leaf in an end position and ensures that the respective door leaf can only strike the limiting device if necessary, thus preventing damage to the door leaves. Furthermore, the limiting device can ensure that, when a door leaf moves into an end position, a defined impact against the limiting device takes place, thus preventing impact within the damper units, thus preventing damage to the damper units.

[0036] A telescopic sliding door system with a damper unit with a retraction function, which initially brakes the second door leaf as it moves toward an end position and then drives it into the end position, can also have a guide rail device with a guide rail for each door leaf, with the door leaves each being guided in the guide rail via at least one carriage. The guide rail device can have a first guide rail for the first door leaf and a second guide rail for the second door leaf, with the first and second guide rails being mountable separately.

[0037] The first and the second guide rail can each have a guide track for guiding the drives of the door leaves, wherein the first guide rail has an access opening to the guide track which is aligned with an access opening to the guide track of the second guide rail.

[0038] The invention is explained in more detail below with reference to the following figures.

[0039] They show: Figure 1 shows a perspective overall view of a telescopic sliding door system according to the invention, Figure 2 shows a side view of a telescopic sliding door system according to the invention with the panel removed, Figure 3 shows a side view of the second door leaf of a telescopic sliding door system according to the invention with a traction mechanism drive, and Figure 4 shows a sectional view of a guide rail device of a telescopic sliding door system according to the invention.

[0040] In Fig. 1 A telescopic sliding door system 1 according to the invention is shown schematically in a perspective view. The telescopic sliding door system 1 has a first door leaf 3 and a second door leaf 5. The door leaves are guided in a guide rail device 7.

[0041] How best to Fig. 2 As can be seen in FIG. 1, which shows a view of the long side of a telescopic sliding door 1 according to the invention, the second door leaf 5 is coupled to the first door leaf 3, so that both door leaves can move in the same direction. The second door leaf 5 can be driven via the first door leaf 3.

[0042] The second door leaf 5 is connected to the first door leaf 3 via a traction drive 9. The traction drive has a first run 9a and a second run 9b, with the first run 9a running above the second run 9b. The first run 9a and the second run 9b are formed by a traction mechanism 9c of the traction drive 9. The traction drive 9 can, for example, be designed as a cable pull, so that the traction mechanism 9c is a cable.

[0043] The upper run 9a is attached to the guide rail device 7 via a fastening device 11 and is thus fixed relative to the first and second door leaves. The first door leaf 3 is connected to the second run 9b via a traction mechanism coupler 13.

[0044] A deflection device 15 is arranged on the second door leaf, consisting of two deflection devices 15a and 15b. The deflection devices deflect the traction mechanism 9c of the traction mechanism drive 9, creating a closed circuit of the traction mechanism 9c. For this purpose, the deflection devices 15a and 15b each have two deflection pulleys 17. The deflection pulleys are arranged vertically and have a rotation axis in the horizontal direction, so that the first and second strands 9a and 9b extend in a common vertical plane.

[0045] How best to Fig. 3 As can be seen, the second door leaf 5 has two drives 19, via which the door leaf 5 is guided in the guide rail device 7. The deflection devices 15a and 15b are each arranged on one of the drives 19.

[0046] The deflection device 15a is arranged on an arm 21, which projects beyond the door leaf 5 in the longitudinal direction of the guide rail device 7 and in the direction of the closed position of the door leaf 5. This ensures that in the Fig. 2 In the closed position shown, the deflection device 15a and parts of the cable pull 9c are located above the first door leaf 3 or are covered by the carriage 19, over which the door leaf 3 is guided in the guide rail device 7. This ensures that a coupling via the cable coupler 13 to the second run 9b is guaranteed even in the fully closed position of the telescopic sliding door system.

[0047] As from Fig. 4 As can be seen, the deflection devices 15a and 15b have holders 17a assigned to the deflection rollers 17, which prevent the traction means 9c from slipping out of the deflection rollers 17.

[0048] The fastening device 11, which may also include a traction mechanism tensioning device, via which the traction mechanism 9c can be adjusted to the desired tension, is mounted in the guide rail device so that it can be displaced longitudinally. This allows the fastening device to be easily adjusted during assembly of the second door leaf 5 and the traction mechanism drive 9.

[0049] The guide rail device 7 consists of a first guide rail 21 for the first door leaf 3, a second guide rail 23 for the second door leaf 5 and a cover 25 which is fastened to the first guide rail 21 and conceals the first and second guide rails 21, 23.

[0050] How best to Fig. 4 As can be seen, the first and second guide rails 21, 23 each have a guide track 27 for guiding the carriages 19 of the first and second door leaves 3, 5. The first guide rail 21 has an access opening 21a, which is arranged in the same direction as an access opening 23a to the guide track 27 of the second guide rail 23. The access opening 21a is thus located on the side of the first guide rail 21 facing away from the second guide rail 23. In other words: the first and second door leaves 3, 5 can be Fig. 4 In the embodiment shown, each hang it from the right side, the long side, into the guide rail device 7.

[0051] The first and second guide rails 21, 23 can be mounted separately. In this way, the second guide rail 23 can be attached to the desired location first. The second door leaf 5, together with the traction drive 9 attached to the second door leaf 5, is then hung in the second guide rail 23 by the carriage 19 engaging the guide track 27. The first guide rail 21 is then attached to the second guide rail 23. The first door leaf 3 can now be hung in the first guide rail 21 via a carriage 19, with the carriage 19 engaging the guide track 27.

[0052] In the exemplary embodiments shown in the figures, the door leaf of the door wing 3 is connected to the carriage 19 via a holding device 29. The door leaf of the door wing 3 can be held by the holding device 29 in such a way that there is a very small distance in the width direction between the door leaf of the second door wing 5 and the door leaf of the first door wing 3. In addition, the door leaf of the first door wing 3, which is shorter in the vertical direction, can be advantageously connected to the carriage 19 via the holding device 29. Fig. 4 In the illustrated embodiment, the traction mechanism coupler 13 is connected to the holding device 29 and engages the lower run 9b of the traction mechanism 9c. Of course, it is also possible for the traction mechanism coupler 13 to be attached to the upper edge of the door leaf of the door wing 3.

[0053] The telescopic sliding door system 1 according to the invention further comprises a plurality of damper units 31 with a retraction function, each of which is fastened in the guide rail device 7 in the end positions of the first and second door leaves 3, 5. The damper unit 31 with a retraction function can initially brake the respective door leaf 3, 5 during travel toward an end position and then drive it into the end position. The damper units 31 with a retraction function can comprise limiting devices (not shown) that restrict the travel path of the respective door leaf 3, 5. This prevents one of the door leaves 3, 5 from striking in an uncontrolled manner or from striking within the damper unit 31.

[0054] The provision of damper units 31 for the second door leaf 5 has the advantage that, when the first and second door leaves 3, 5 reach an end position, the kinetic energy transferred from the first door leaf 3 to the door leaf 5 during movement is absorbed by the damper units 31 assigned to the second door leaf 5. This prevents the second door leaf 5 from still possessing kinetic energy when the first door leaf 3 stops, which is transferred to the traction drive. It also prevents the second door leaf 5 from striking the surroundings in an uncontrolled manner.

[0055] The drives 19 each have a coupling device 33, via which a coupling to a damper unit 31 can be effected. The coupling devices 33 are arranged at the rear end of the drive 19 in the direction of travel of a door leaf 3, 5, in the front drive 19.

[0056] The first and second door leaves 3,5 can in particular be designed as glass doors.

[0057] The telescopic sliding door system 1 according to the invention enables a very compact design of the guide rail device 7, thereby creating an aesthetically pleasing telescopic sliding door system 1. Furthermore, the arrangement of the traction mechanism drive with a first run 9a, which runs above the second run 9b, enables height adjustment of the individual door leaves 3, 5 without the traction mechanism 9c threatening to slip out of the deflection device 15. The telescopic sliding door system according to the invention is easy to install, since the individual door leaves 3, 5 can be installed individually and one after the other, with the parts necessary for adjustment being advantageously accessible during installation.

Claims

1. Telescopic sliding door assembly (1) with at least one first and one second door leaf (3, 5), wherein the second door leaf (5) is coupled to the first door leaf (3) via a traction drive (9) to carry out a unidirectional movement and is adapted to be driven via the first door leaf (3), with a runner rail device (7) having at least one runner rail (21, 23) for each door leaf (3, 5), respectively, each door leaf (3, 5) being guided in the runner rail (21, 23) via at least one door carriage (19), characterized by a damping unit (31) with a retraction function that first decelerates the first door leaf (3) as it moves towards an end position and then drives the same to the end position, and a further damping unit (31) with a retraction function that first decelerates the second door leaf (5) as it moves towards an end position and then drives the same to the end position, wherein two damping units (31) with a retraction function are provided for the first and the second door leaf (3, 5), respectively, and one damping unit (31) with a retraction function acts at the end position of the respective door leaf which represents the closed position and one damping unit (31) with a retraction function acts at the end position of the respective door leaf which represents the open position.

2. Telescopic sliding door assembly of claim 1, characterized in that each damping unit (31) has a limiting device associated thereto which limits the traveling path of the respective door leaf (3, 5).

3. Telescopic sliding door assembly of claim 1 or 2, characterized in that the traction drive (9) has a first strand (9a) and a second strand (9b), the traction drive (9) connecting the first and the second door leaf (3, 5), the first strand (9a) extends above the second strand (9b) and the traction device (9) is guided via a reversing device (15) arranged at the second door leaf (5), and wherein the first strand (9a) is fastened stationarily with respect to the first and the second door leaf (3, 5), wherein the second strand (9b) is connected with the first door leaf (3), or the second strand (9b) is fastened stationarily with respect to the first and the second door leaf (3, 5), wherein the first strand (9a) is connected with the first door leaf (3).

4. Telescopic sliding door assembly of claim 3, characterized in that the first and the second strand (9a, 9b) are arranged in a vertical plane.

5. Telescopic sliding door assembly of claim 3 or 4, characterized in that the second strand (9b) is arranged in a horizontal direction beside the second door leaf (5).

6. Telescopic sliding door assembly of claim 3 to 5, characterized in that the reversing device (15) consists of two reversing means (15a, 15b), respectively arranged at one door carriage (19) of the second door leaf (5).

7. Telescopic sliding door assembly of one of claims 3 to 6, characterized in that the strand of the traction drive (9) fastened stationarily with respect to the first and the second door leaf (3, 5) is fastened in the runner rail device (7) via a fastening device (11).

8. Telescopic sliding door assembly of claim 7, characterized in that the fastening device (11) is fastened to be slidable in the longitudinal direction of the runner rail device (7) and / or is fastened to the runner rail (23) for the second door leaf (5).

9. Telescopic sliding door assembly of one of claims 1 to 8, characterized in that the runner rail device (7) has a first runner rail (21) for the first door leaf (3) and a second runner rail (23) for the second door leaf (5), the first and the second runner rail (21, 23) being adapted to be mounted separately.

10. Telescopic sliding door assembly of claim 9, characterized in that the first and the second runner rail (21, 23) each have a guide track (27) for guiding the door carriages (19) of the door leaves (3, 5), wherein the first runner rail (21) has an access opening (21a) to the guide track (27) directed in the same direction as an access opening (23a) to the guide track (27) of the second runner rail (23).

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