SLIDING DOOR SYSTEM

Description

[0001] The present invention relates to a sliding door system with at least one door leaf and with a support structure for the at least one door leaf.

[0002] Such sliding door systems are generally known. The supporting structures of such sliding door systems usually have at least one longitudinally extending track for guiding the door leaf, with the at least one track forming a downward-opening gap. Either the sliding door leaf or a carriage guided in the track extends through this downward-opening gap to connect with the door leaf below. Such a sliding door system is known from EP1748135A2.

[0003] Sliding door systems may include a fixed side element that laterally limits the door opening. This fixed side element can be arranged, for example, in the same plane as a sliding door leaf or in a parallel plane, allowing a sliding door leaf to be pushed in front of the side element when opening.

[0004] However, the fundamental difficulty lies in mounting a fixed side element in a simple way.

[0005] There are also sliding door systems that use two or more parallel tracks, each guiding a door leaf. The door leaves can be guided separately or coupled together. Large doorways can be closed off using such sliding door systems.

[0006] However, such systems often present the problem that, due to the multiple parallel tracks, even a viewer can see between them from a distance and thus, for example, see the mechanisms guided within them. This problem is particularly prevalent with sliding door systems featuring clear glass door panels. It is therefore desirable to create a sliding door system that is visually appealing despite having a supporting structure with multiple tracks.

[0007] Furthermore, the fastenings used today for fixed side elements are not visually appealing, as they differ visually from the track that guides the sliding door. The known fastening methods are also mostly very complex. A sliding door system according to the preamble of claim 1 is known from DE102004052523A. Further sliding door systems in which a fixed side element is attached in or to the track are known from DE20002285U1, AU536409B3, DE102005030757A1 and EP2796649A1.

[0008] It is therefore the object of the present invention to create a sliding door system that has a visually appealing support structure with two or more parallel running rails of simple construction and / or that has a visually appealing fastening of a fixed side element.

[0009] The features of claim 1 serve to solve the problem.

[0010] In the sliding door system according to the invention, comprising at least one door leaf and a support structure for the at least one door leaf with at least one longitudinally extending guide rail for guiding the door leaf, wherein the at least one guide rail forms a downwardly open gap, it is provided that at least one retaining adapter element is attached to the upper side of at least one fixed side element, wherein the fixed side element engages in the gap of the guide rail via the at least one retaining adapter element and the support structure holds the fixed side element via the at least one retaining adapter element.

[0011] The sliding door system according to the invention thus enables the side element to be mounted and secured in a structurally simple manner by being inserted into the gap of the guide rail of the support structure by means of one or more retaining adapter elements and held in place by them. The attachment of the side element is visually appealing because it takes place in a guide rail of the support structure that is suitable for or used to guide the door leaf, thereby creating a uniform appearance for the support structure. The side element can engage with the at least one retaining adapter element in the gap of a guide rail in which a door leaf is also guided. In this case, the fixed side element forms a lateral boundary of the door opening on the side of the door opening opposite the open position of the sliding door.It is also possible for the side element to be attached to a track parallel to the track in which the door leaf is guided, using at least one retaining adapter element. In this case, the door leaf can be pushed alongside the side element when opening, so that, viewed from above, the door leaf is located in front of or behind the side element.

[0012] The invention is therefore advantageous because the side element is attached in conventional guide rails. The gap arranged in the guide rail is the gap that is usually used to guide the door leaf or a track guiding the door leaf. The side element can be attached to its underside in a conventional manner, for example by means of a floor track.

[0013] Preferably, at least one cover plate is arranged on the guide rail to at least partially conceal the at least one retaining adapter element. Thus, the sliding door system according to the invention can be made particularly aesthetically pleasing simply by providing a cover plate, which at least partially conceals the retaining adapter element. The cover plate can, of course, also conceal a track extending through the gap and guiding the door leaf.

[0014] The guide rail according to the invention is a guide rail with a first track for a sliding door carriage, wherein the first track laterally limits the gap. Such guide rails are suitable for carriages that have one or more rollers on one side.

[0015] It can also be provided that the track has a second track for a carriage supporting the sliding door, with the gap formed between the first and second tracks. Such tracks typically guide carriages that have one or more rollers on each side. Since such tracks are usually difficult to access, the retaining adapter element allows the side element to be easily attached to the track by being inserted from below into the gap formed between the tracks.

[0016] Preferably, the retaining adapter element has an insertion slot into which an upper edge of the fixed side element is inserted, with the retaining adapter element being clamped to the fixed side element. This allows the retaining adapter element to be attached to a fixed side element in a structurally simple manner. The insertion slot can be located in a mounting section of the retaining adapter element. This mounting section can be made of metal, preferably aluminum. This ensures high stability of the retaining adapter element.

[0017] The sliding door system can be, in particular, a glass sliding door system where the door leaf is made of glass and / or where the side panel is also made of glass. A clamping fastening of the retaining adapter element allows it to be attached to a glass side panel in a particularly advantageous manner. Glass inserts can be provided in the insertion gap to protect the glass.

[0018] Of course, the retaining adapter element can also be positively attached to the side element, for example by using fasteners such as screws that are guided through corresponding recesses or holes in the side element.

[0019] Preferably, the retaining adapter element has at least one retaining section arranged in the gap in the guide rail, wherein the at least one retaining section has a width adapted to the gap width. The width of the retaining section, or the gap width, is the horizontal extent orthogonal to the main surface of the fixed side element. The retaining section adapted to the gap width ensures that the retaining adapter element can be advantageously inserted into the gap and is thus advantageously held in the supporting structure. Furthermore, the retaining adapter element can have a central section between the mounting section, in which the insertion slot is arranged, and the retaining section, the central section having a width adapted to the gap width. The central section has a length adapted to the base mounting of the side element.During assembly, this design allows the side element to be inserted into the gap at a slight angle, along with the retaining section, and then lifted further, so that the middle section is also inserted into the gap. In this way, the side element can be lifted over protruding parts of the floor mounting. The side element is then pivoted into a vertical position and lowered into the floor mounting. This makes it very easy to use floor mountings that are, for example, U-shaped and must be attached to the floor before the side element is installed. The gap width can generally be less than the combined width of the retaining section and the middle section, with the parts of the guide rail forming the gap being elastically deformed during insertion and holding of the retaining adapter element.This allows a clamping force to be exerted on the holding adapter element and prevents any movement of the holding element in the gap.

[0020] The retaining adapter element can also be multi-part. For example, the mounting section can consist of two parts designed as clamping jaws that encompass the upper end of the side element when assembled. Furthermore, a cap can be provided, which is placed on the mounting section and forms the retaining section, or the retaining section and the middle section. The cap can be made of plastic, for example, which reduces noise generated by interaction with the guide rail. It is also possible, for example, to arrange several caps on one mounting section. For instance, the mounting section can have a predetermined length, and the caps, for example, two or three caps, can be significantly shorter, for example, 20% of the length of the mounting element.The continuous mounting section, the length of which is adapted, for example, to the length of a drive mounting section of a drive of an adjacent door leaf, creates a visually appealing construction, whereas the shorter caps ensure improved support of the side element, as they can be clamped better into the gap, for example.

[0021] In the sliding door system according to the invention, it can also be provided that the support structure has a first and a second parallel running rail for guiding two parallel door leaves or for guiding a door leaf and holding a fixed side element by means of at least one holding adapter element, wherein a running gear with a running gear mounting section projecting downwards through the gap of the running rail for attaching a door leaf can be guided in a running rail, wherein a cover is attached to the side of the first and second running rails facing away from the other running rail for at least partially concealing the running gear mounting section and / or the at least one holding adapter element.Furthermore, an intermediate panel can be arranged between the first and second guide rails to at least partially conceal the drive mounting section and / or the at least one retaining adapter element, and this intermediate panel is attached to at least one of the guide rails. In the sliding door system according to the invention, the support structure can thus be provided with two parallel guide rails, each having a panel on its outer sides, and an intermediate panel between the guide rails. By means of the panels and the intermediate panel, parts of the drive mechanism or the retaining adapter element can thus also be advantageously concealed, creating an aesthetically pleasing sliding door system.

[0022] The arrangement of panels attached laterally to two parallel guide rails, with an intermediate panel mounted between the guide rails, can also be realized independently of a fixed side element with a retaining adapter element. Thus, the invention also provides a sliding door system with at least one door leaf and a support structure, wherein the support structure has a first and a second guide rail extending longitudinally for guiding the at least one door leaf, which are arranged parallel to each other, the guide rails each forming a downwardly open gap, and wherein a drive unit with a drive unit mounting section projecting downwards through the gap of the guide rail for attaching a door leaf can be guided in one of the guide rails.wherein a cover for at least partially optically concealing the running gear mounting section is attached to the side of the first and / or second running rail facing away from the other running rail, and wherein preferably an intermediate cover for at least partially optically concealing the running gear mounting section is arranged between the first and the second running rail, which is preferably attached to at least one of the running rails.

[0023] In the sliding door system according to the invention, the support structure can have at least one third guide rail arranged parallel to and between the first and second guide rails. Preferably, an intermediate panel is attached between each guide rail to at least partially conceal the drive mounting section and / or the retaining adapter element(s). The intermediate panels are preferably attached to at least one of the guide rails. In other words, the support structure can have three or more parallel guide rails, with a panel arranged on the outside of each outermost first and second guide rail and preferably an intermediate panel between each of the guide rails. Within the scope of the invention, the guide rails arranged between the first and second guide rails are referred to as third guide rails.In this way, the sliding door system can be designed to be visually appealing even with a support structure with three running rails, and it is ensured that the drive mounting sections of the drive mechanisms of the door leaves and / or retaining adapter elements of fixed side elements are at least partially concealed for the viewer.

[0024] Of course, it is also possible for the support structure to have more than three guide rails. Generally, such a support structure is designed with an intermediate panel between each guide rail and a panel on each of the outermost guide rails.

[0025] Preferably, the first and second, or the first, second, and at least one third guide rail have the same construction. In a support structure with more than three guide rails, it is of course possible for all guide rails to have the same construction. This allows the sliding door system according to the invention to be manufactured cost-effectively, since no different parts need to be used for the individual guide rails. Furthermore, the retaining adapter element of a side element can also be inserted into the same guide rail used to guide a door leaf.

[0026] Preferably, the panels and / or the intermediate panels have the same structure. This results in a simple design for the sliding door system, including the panels and / or intermediate panels, and reduces the number of different parts. The sliding door system according to the invention can therefore be manufactured cost-effectively. It is also possible for the panels and intermediate panels to have the same structure. This further reduces the number of different parts.

[0027] The panels and / or intermediate panels can be clamped to the corresponding running rail.

[0028] The cover can be designed with a mounting area that clamps around a track and includes a cover section suspended from the track, the lower end of which is angled towards the door leaf or fixed side panel. In other words, the cover section can be L-shaped. By providing a mounting area that clamps around the track, the cover can be easily clamped to the track. The angled design of the cover section has the advantage of minimizing the gap between the cover and the sliding door or fixed side panel, thus reducing the amount of dirt that can accumulate between the cover and the sliding door.Dirt can enter between the cover and the fixed side element, thus minimizing the tendency for the track to become dirty. Furthermore, the angled design provides additional visual protection from below, allowing the cover section to advantageously conceal the retaining element of the fixed side element or the track mounting section of the sliding door.

[0029] In a preferred embodiment of the invention, the intermediate panel further comprises a mounting area that clamps around a guide rail and a cover section suspended from the guide rail, the lower end of the cover section being angled on both sides towards the adjacent door leaf or the adjacent door leaf and the adjacent fixed side element. Thus, the gap formed between the intermediate panel and an adjacent door leaf or an adjacent fixed side element is kept small by means of the intermediate panel, resulting on the one hand in improved optical concealment of a mounting section of a drive mechanism or a retaining adapter element and on the other hand in reduced contamination of the guide rail. The cover section can, for example, be T-shaped.The invention also enables embodiments in which the apertures and intermediate apertures have the same construction. For example, an embodiment of an aperture with a T-shaped cover section is advantageous when the supporting structure is arranged in a ceiling groove. The cover section thus conceals a gap formed between the aperture and a side wall of the groove from below. Such an aperture design is, of course, independent of the design of the intermediate aperture. In principle, it is also possible for the aperture to have a cover section with an asymmetrical T-shape.For example, the angled part of the cover section for covering a gap between the cover and the wall of the mounting groove of the supporting structure can be wider than the angled section for covering the gap formed between the cover and the sliding door or the fixed side element.

[0030] In principle, intermediate apertures with a covering section that is angled on one side and thus has an L-shape are also possible.

[0031] Sealing elements, such as brush seals, can be arranged at the free ends of the covering section of the aperture and the intermediate aperture.

[0032] The invention will be explained in more detail below with reference to the following figures.

[0033] They show: Figure 1 is a schematic side view of a sliding door system according to the invention with several coupled door leaves and a fixed side element; Figure 2 is a sectional view of a support system of a sliding door system according to the invention with two parallel running rails; Figure 3 is a schematic sectional view of the support system of the Fig. 1 The sliding door system according to the invention is shown, and Figure 4 is a schematic detail representation of a holding adapter element of a fixed side element.

[0034] In Fig. 1 Figure 1 schematically illustrates a sliding door system 1 according to the invention in a side view. The sliding door system 1 has several door leaves 3 which are coupled to one another and guided in a support structure 5. Due to the coupling, when one door leaf 3 moves, the other door leaves 3 are successively pulled or pushed along with it. The sliding door system 1 also has a fixed side element 7 which laterally limits the door opening formed when the sliding door is open. The door leaves 3 are guided at floor level in a conventional manner. The fixed side element 7 is also attached to the floor in a conventional manner.

[0035] In Fig. 2 Figure 1 shows a further embodiment of a sliding door system 1 according to the invention, wherein the support structure 5 of the sliding door system 1 is shown in section. The support structure 5 consists of two guide rails 11 extending in a longitudinal direction and arranged parallel to each other. The guide rails 11 have the identical profile, so that identical guide rails 11 can be used in a cost-saving manner. In the figure shown in the Fig. 2 In the illustrated embodiment, a door leaf 3 is guided in the right-hand track 11 by means of a running gear 13. In the Fig. 2 A fixed side element 7 is held in the guide rail 11 shown on the left. The guide rails 11 have raceways 15 for guiding the running gear 13, which run parallel to each other. The running gear 13 can be guided in the raceways 15 by means of rollers 17 arranged on both sides of the running gear 13.

[0036] The tracks 15 define a gap 19 on both sides. A track mounting section 21 is guided through the gap 19 of the right track 11. The door leaf 3 is clamped to the track mounting section 21. For this purpose, the track mounting section 21 has two clamping jaws 21a that grip the door leaf 3.

[0037] In the sliding door system 1 according to the invention, the door leaves 3 and also the fixed side element 7 can be made of glass. The clamping attachment of the drive mounting section 21 of the drive 13 to the door leaf 3 thus has the advantage that no complex fastening measures, such as drilling into the glass of the door leaf 3, are necessary.

[0038] A retaining adapter element 23 is arranged at the upper edge of the fixed side element 7. The retaining adapter element 23 has an insertion slot 25 into which the upper side of the fixed side element 7 is inserted. The insertion slot 25 is formed in a mounting section 26 of the retaining adapter element 23. The mounting section 26 has two clamping jaws 26a. The retaining adapter element 23 thus grips the upper edge of the fixed side element 7 with the clamping jaws 26a and is clamped to the fixed side element 7. The clamping force is generated by means of screws 26b.

[0039] The retaining adapter element 23 has a retaining section 27, which allows the retaining adapter element 23 to be inserted into the gap 19 of the guide rail 11. Thus, the guide rail 11, and consequently the support structure 5, holds the top of the fixed side element 7 in position. The use of the retaining adapter element 23 allows for a particularly advantageous fastening of the fixed side element 7, since the same guide rail 11 used to guide the door leaf 3 can be used in the support structure 5. Below the retaining section 27, the retaining adapter element 23 has a central section 28, which has the same width as the retaining section 27 and is therefore adapted to the gap 19. This allows the side element 7 to be inserted at an angle from below and, for example, lifted into a floor fixing (not shown).The side element 7 is lifted until the central section 28 is located in the gap 19, pivoted towards the base fixing, and then lowered into it. The central section 28 enables the side element 7 to be lifted accordingly.

[0040] The holding adapter element 23 has a cap 30 which is placed on the clamping jaws 26a and which forms the holding section 27 and the central section 28. The cap 30 can, for example, be made of plastic, whereas the clamping jaws 26a are made of metal.

[0041] The retaining section 27 of the retaining adapter element 23 has a width d that is adapted to the gap width D of the gap 19. This ensures that the retaining adapter element 23 is reliably held in the gap 19.

[0042] The clamping jaws 21a of the drive 13 can have the same length as the clamping jaws 26a of the holding adapter element 23.

[0043] The guide rails 11 each have a cover plate 29 on the side facing away from the other guide rail 11. The cover plates 29 are clamped to the guide rails 11. For this purpose, each cover plate 29 has a mounting area 31 that clamps around the respective guide rail 11.

[0044] The panels 29 also have a cover section 33 suspended from the guide rail 11, the lower end of the cover section 33 being angled towards the sliding door 3 or the fixed side element 7. This forms an L-shape.

[0045] The cover 29 serves to visually conceal the retaining adapter element 23 and the drive mounting section 21 of the drive 13. The angled design of the cover section 33 reduces the gap between its lower end and the fixed side element 7, and between its lower end and the door leaf 3. This reduces the tendency for dirt to accumulate, as the risk of dirt entering the guide rail through this gap is minimized. Furthermore, the retaining adapter element 23 and the mounting section 21 are more effectively concealed, particularly when viewed from a low angle. It is also possible to provide seals, such as brush seals, at the lower ends of the cover section 33 to further reduce the gap.

[0046] An intermediate panel 35 is arranged between the guide rails 11 and is clamped to one of the two guide rails 11 via a mounting area 37. The intermediate panel 35 has a cover section 39 suspended from the guide rail 11, the lower end of which is angled on both sides towards the adjacent door leaf 3 and the adjacent fixed side element 7. The lower end of the cover section 39 thus forms a T-shape.

[0047] This reduces the tendency to become dirty in a manner comparable to the external panels 29 and better conceals the retaining adapter element 23 and the drive mounting section 21. This is particularly advantageous when the fixed side element 7 and the door leaf 3 are made of glass, since in such an embodiment the observer can see through the fixed side element 7 or the door leaf 3 and thus into the area located between the retaining adapter element 23 and the drive mounting section 21.

[0048] By means of the panels 29 and intermediate panels 35 a sliding door system 1 can be realized which is aesthetically particularly appealing, since the parts holding the fixed side element 7 and the parts guiding the door leaf 3 are mostly concealed from the viewer's sight.

[0049] In Fig. 3 is the supporting structure 5 of the in Fig. 1 The illustrated embodiment of a sliding door system 1 according to the invention is shown schematically in section.

[0050] As can be seen from this embodiment, in a supporting structure 5 of a sliding door system 1, several guide rails 11 can also be arranged parallel to each other, with all guide rails 11 having the same construction. A first and a second guide rail 11, which form the two outer guide rails 11, are shown, as well as several third guide rails 11, which are arranged between the first and the second guide rail 11. The in Fig. 3 The first guide rail 11, located on the far left, accommodates the retaining adapter element 23 of the fixed side element 7. The other guide rails 11 each accommodate a drive unit 13 of the four parallel door leaves 3. Cover plates 29 are arranged on the outside of the outermost first and second guide rails 11; these are designed and attached in the same way as the cover plates 29 in the [reference to be added]. Fig. 2 illustrated embodiment.

[0051] Intermediate panels 35 are arranged between the guide rails 11, which are designed and attached in the same way as the intermediate panel 35 in the Fig. 2 illustrated embodiment.

[0052] Thus, the sliding door system 1 according to the invention enables each drive mounting section 21 or each retaining adapter element 23 to be surrounded on both sides by a cover 29 and an intermediate cover 35 or by two intermediate covers 35, and is therefore advantageously at least partially shielded from view. This is particularly advantageous when the door leaves 3 and the fixed side element 7 are made of glass. Furthermore, the covers 29 and the intermediate covers 35 provide the same level of protection as with regard to the Fig. 2 described - the pollution properties of the supporting structure 5 improved.

[0053] The panels 29 in the sliding door system 1 according to the invention can be designed with the same profile, so that only a mirrored arrangement of the panel 29 needs to be observed when assembling the support structure 5. The intermediate panels 35 can also have the same design. Thus, the support structure 5 comprises only a small number of different parts, which keeps manufacturing costs and assembly effort low.

[0054] In a sliding door system 1 according to the invention, it is of course also possible to provide more than one fixed side element 7. For example, the door opening can be surrounded on both sides by a fixed side element 7. The fixed side elements can be held in the same track 11 or in different tracks. By providing the retaining adapter element 23, a very flexible arrangement of the fixed side element 7 is thus possible.

[0055] In Fig. 4 A retaining adapter element 23 is shown schematically in a detailed view.

[0056] The retaining adapter element 23 has a fastening section 26 formed by two elongated clamping jaws 26a. The clamping jaws 26a are connected to each other by screws 26b and exert a clamping force on the side element 3.

[0057] Two caps 30, spaced apart from each other and significantly shorter than the clamping jaws 26a, are mounted on the clamping jaws 26a. When attaching the side element, the retaining adapter element 23, with the two caps 30, is inserted into the gap in the guide rail, forming two retaining sections 27 and two intermediate sections 28. The caps 30 can be attached to the clamping jaws 26a, for example, by screws 30a. The caps 30 are made of plastic, thus reducing noise generated when interacting with the guide rail. The use of several relatively short caps 30 improves the retention of the side element 3 in the guide rail 11, as a slight elastic deformation of the guide rail allows the short caps 30 to be held more securely. This also facilitates the insertion of the side element 3 into the gap 19 of the guide rail 11.

Claims

1. A sliding door system (1) comprising at least one door leaf (3) and comprising a supporting structure (5) for the at least one door leaf (3) with at least one running rail (11) extending in a longitudinal direction for guiding the door leaf (3), wherein the at least one running rail (11) forms a gap (19) which is open towards the bottom, wherein at least one retaining adapter element (23) is mounted to the upper edge of at least one fixed side element (7), and wherein the running rail (11) has a first running track for a running gear (13) carrying the door leaf (3), wherein the first running track (15) laterally delimits the gap (19), wherein the running gear (13) carrying the door leaf (3) or the door leaf (3) is passed through the gap (19), characterized in that the fixed side element (7) engages with the gap (19) of the running rail (11) via the retaining adapter element (23) in that the fixed side element (7) is pushed into the gap (19) of the running rail (11) of the support structure (5) by means of the retaining adapter element (23) and is held by the same, and thus the support structure (5) holds the fixed side element (7) by means of the retaining adapter element (23).

2. The sliding door system according to claim 1, characterized in that at least one cover (29) is disposed on the running rail (11) for at least partially optically covering the retaining adapter element (23).

3. The sliding door system according to claim 1 or 2, characterized in that the running rail (11) has a second running track (15) for a running gear (13) carrying the door leaf (3), wherein the gap (19) is formed between the first and second running tracks (15).

4. The sliding door system according to any one of claims 1 to 3, characterized in that the retaining adapter element (23) has an insertion gap (25) into which the upper side of the fixed side element (7) is inserted, wherein the retaining adapter element (23) is mounted to the fixed side element (7) in a clamping manner.

5. The sliding door system according to any one of claims 1 to 4, characterized in that the retaining adapter element (23) has a retaining portion (27) which is arranged in the gap (19), wherein the retaining portion (27) has a width d adapted to the gap width D.

6. The sliding door system according to any one of claims 1 to 5, characterized in that the supporting structure (5) has a first and a second parallel running rail (11) for guiding a door leaf (3) and holding a fixed side element (7) by means of a retaining adapter element (23), wherein a running gear (13) with a running gear mounting portion (21) projecting downwards through the gap (19) of the running rail (11) for mounting the door leaf (3) can be guided in a running rail (11), wherein a cover (29) for at least partially optically covering the running gear retaining portion (21) and / or the retaining adapter element (23) is respectively mounted to the side of the first and second running rails (11) facing away from the respective other running rail (11).

7. The sliding door system according to claim 6, characterized in that an intermediate cover (35) is arranged between the first and the second running rail (11) for at least partially optically covering the running gear mounting portion (21) and / or the retaining adapter element (23), which intermediate cover is mounted to at least one of the running rails (11).

8. The sliding door system according to claim 6, characterized in that the supporting structure (5) has at least one third running rail (11) which is arranged parallel to the first and second running rails (11) and between them.

9. The sliding door system according to claim 8, characterized in that an intermediate cover (35) is mounted between each running rail (11) for at least partially optically covering the running gear mounting portion (21) and / or the retaining adapter element (23), wherein the intermediate covers (35) are each mounted to at least one of the running rails (11).

10. The sliding door system according to any one of claims 6 to 9, characterized in that the first and second or the first, second and at least one third running rails (11) have the same structure.

11. The sliding door system according to any one of claims 6 to 10, characterized in that the covers (29) have the same structure and / or that the intermediate covers (35) have the same structure.

12. The sliding door system according to any one of claims 6 to 11, characterized in that the cover (29) has a mounting area (31), which clampingly embraces a running rail (11), and a covering portion (33) suspended from the running rail (11), wherein the lower end of the covering portion (33) is angled in the direction of the adjacent door leaf (3) or the adjacent fixed side element (7).

13. The sliding door system according to any one of claims 6 to 12, characterized in that the intermediate cover (35) has a mounting area (37), which clampingly embraces a running rail (11), and a covering portion (39) suspended from the running rail (11), wherein the lower end of the covering portion (39) is angled on both sides in the direction of the adjacent door leaves (3) or of the adjacent door leaf (3) and the fixed side element (7).