Sealing system and sliding door

Abstract

The invention relates to a sliding door and a sealing system for sealing between the opposing central profiles (10, 20) of a sliding door (100), comprising a sealing profile (50) which can be fastened to one of the central profiles (10, 20), preferably to the central profile (10) of a fixed panel of a sliding door (100), in the vertical direction of extension, wherein the sealing profile (50) comprises a sealing base (57) which can be fastened with its rear side to the central profile (10), in particular to a cover profile (30) of the central profile (10), and which has on its front side, at a distance from one another, two projecting sealing regions (58, 59) extending parallel to one another, wherein, viewed in cross-section, a recess (A) is formed between the sealing regions (58, 59) and the front side of the sealing base (57), in particular with which, in cooperation with a surface (21) of an opposing central profile (20), a pressure equalization chamber can be formed,wherein two sealing elements (70) are further provided and with each sealing element (70) the frontal cross-section of the sealing profile (50) can be partially covered by contact at a respective end lying in the direction of extension, in particular is partially covered when used as intended.

Description

[0001] The invention relates to a sealing system for sealing between the opposing center profiles of a sliding door, comprising a sealing profile which can be fastened to one of the center profiles, preferably to the center profile of the fixed panel of the sliding door, in the vertical direction of extension.

[0002] The invention further relates to a sliding door comprising a frame in which a fixed panel and one or two sliding panels are arranged, which have overlapping center profiles when closed. The center profiles are arranged overlapping in a direction perpendicular to the sliding direction, in particular in a direction perpendicular to the surface of the glass elements in a sliding door.

[0003] Such a sliding door is preferably a parallel-action sliding door, formed from a circumferential frame, which accommodates at least a first and a second leaf that are offset from one another, wherein the first leaf preferably forms a non-displaceable fixed field or a sliding leaf and can preferably comprise a glass element that is held in the central region by a central profile with a cover strip and a glazing bead, and the second leaf forms a displaceable sliding leaf composed of individual profiles that is displaceably mounted in the frame. This preferably also comprises a glass element. In the closed sliding door position, it is provided that the connection between the interior of the room and the environment formed by the distance between the opposing central profiles is closed by means of a sealing system.

[0004] The movable sliding door leaf, especially a so-called parallel-retractable sliding door, fits into the frame parallel to the fixed leaf. The retractable function is achieved by turning the handle. This detaches the sliding leaf from the frame of the entire sliding door and allows it to be moved sideways.

[0005] The invention is particularly intended for sliding doors whose opposite central profiles or whose leaves are spaced apart from one another by a smaller distance, in particular a smaller parallel offset, when the sliding door is closed or in the closed state than in an open position in which the sliding leaf is displaceable.

[0006] In the preferred embodiment, at least two glass elements are provided which are arranged in parallel planes to one another and are displaceable relative to one another, wherein the sliding sash with its glass element is displaceable relative to the fixed field or another sliding sash with its glass element.

[0007] When closed, the respective vertical frame sections in the central area of ​​the sliding door lie in front of each other in offset planes, whereby they each form the aforementioned central area on their opposite / facing surfaces in order to create both a visually and mechanically effective overlap and a seal against wind and rain when closed.

[0008] From EP 3 543 451 B1, elastic sealing linings are provided on the overlapping center profiles to form a seal in the center area, so that the two center profiles are sealed against each other when the sliding door leaves are in front of each other.

[0009] DE 77 25 150 U discloses a lift-and-slide door with a center seal unit, in which the center locking profile is even part of the sliding door leaf profile. The diagonally positioned sealing surfaces require precise positioning of the two frame profiles. If these are too far apart, the connection will leak. Furthermore, there is a risk that the sealing strips arranged on the slopes will be pushed aside during closing.

[0010] The disadvantage of the known seals in the middle area is that in adverse weather conditions, especially in the case of driving rain and / or pressure differences between the interior and the outside environment, water and air can penetrate into the interior of the room.

[0011] The object of the invention is therefore to improve the air and driving rain tightness of a sliding door.

[0012] This object is achieved according to the invention with a sealing system of the type mentioned at the outset, in which the sealing profile comprises a sealing base which can be fastened with its rear side to the central profile, in particular to a cover profile of the central profile, and which has two projecting sealing regions running parallel to one another at a distance from one another on its front side, wherein a recess is formed between the sealing regions and the front side of the sealing base, viewed in cross-section, in particular with which recess a pressure equalization chamber can be formed in cooperation with a surface of an opposite central profile, wherein two sealing elements are further provided and with each sealing element the front cross section of the sealing profile can be partially covered by contact at a respective end lying in the direction of extension, in particular is partially covered when used as intended.

[0013] Preferably, the sealing profile can be directly attached to the center profile, in particular to a cover profile of the center profile, without the need for additional components. Further preferably, the sealing profile and the two sealing elements form the sole components of the sealing system according to the invention.

[0014] Furthermore, the invention is achieved by a sliding door of the type mentioned at the outset, in which a sealing profile of the aforementioned sealing system is arranged on one of the center profiles, in particular the center profile of a fixed field, running in the vertical direction, the open cross section of which is partially closed on the room side at the respective end of the sealing profile with a respective sealing element of the aforementioned sealing system, which is arranged between the end of the sealing profile and the frame.

[0015] Such a sealing profile is preferably formed in a direction of extension that runs vertically after installation on the central profile, e.g., the central profile of a fixed panel of the sliding door. The sealing profile has a profile cross-section perpendicular to the direction of extension that remains constant over its entire extension. Such a sealing profile can be manufactured, for example, by extrusion, preferably from an elastomer material. In all possible embodiments, a sealing profile is preferably a one-piece component made of an elastomer material.

[0016] The sealing base mentioned can, for example, form a web when viewed in the profile cross-section, which runs parallel to a surface of the central profile, in particular to both opposite surfaces of the opposite central profiles.

[0017] In particular, "projecting" here means that the sealing regions extend from the sealing base toward the opposite center profile. The sealing regions preferably extend parallel to each other in the aforementioned direction of extension and are preferably spaced perpendicular to this direction and in a direction parallel to the opposing surfaces of the two center profiles.

[0018] The invention thus makes it possible that in a closed position of a sliding door with this sealing system, the pressure equalization space formed by the recess and the opposite surface of the central profile is open to the weather side at the respective end of the sealing profile and is closed to the room side by the respective sealing element.

[0019] This allows pressure equalization in the pressure equalization chamber to the weather side, which has a positive effect on the tightness because no force acts on the sealing area of ​​the sealing profile located on the weather side, which could otherwise arise from a pressure difference on both sides of the sealing area.

[0020] Furthermore, the pressure equalization chamber or recess formed in the closed state is permeable to diffusion on the weather side, so that any moisture that has penetrated can dry out to the outside.

[0021] The sealing profile is preferably designed such that the two sealing regions each form a leg that extends from the sealing base connecting these legs toward the opposite center profile. The surface of the respective sealing region that contacts the surface of the opposite center profile has a sealing interaction with the surface of the center profile. For this purpose, each leg can have, particularly at its free end, at least one sealing lip that can be placed against the surface.

[0022] The sealing system according to the invention comprises a sealing profile in the overlapping area of ​​the center profiles, preferably of the fixed panel and the sliding sash. This means that the sealing profile extends over the vertical center profile and is aligned with its contour, in particular with a cover profile of the center profile to which the sealing profile is mounted, in particular with the rear side of the sealing base facing the center profile to which it was mounted.

[0023] Preferably, each sealing element is formed by a body stepped in a height direction, in particular made of an elastomeric material, wherein the body is tapered in the height direction, for which purpose the thickness of the body viewed in a thickness direction decreases after each step, in particular wherein the thickness direction corresponds to the direction of the spacing between two opposing central profiles, wherein the narrowest step in the thickness direction and highest step in the height direction forms a contact surface with which the cross-section of the sealing profile can be partially covered by contact. The height direction, with reference to the completed assembly of the sealing system, is the direction in which the two sealing elements are spaced from one another, in particular in which the sealing profile extends, thus preferably the vertical direction in the case of an assembled sliding door.

[0024] The contacting partial coverage of the cross-section of the sealing profile by a respective sealing element is such that at least the leg or sealing area of ​​the sealing profile arranged on the room side and, in some areas, the web of the sealing base is contacted by the contact surface of the narrowest / uppermost step.

[0025] As a result, the cross-section of the sealing profile is closed on the room side, in particular when the room-side sealing area / leg of the sealing profile makes sealing contact with the surface of the opposite central profile, preferably, wherein this surface of the central profile also lies in a sealed manner on the sealing element in an area beyond the front end of the sealing profile, in particular on a surface of the sealing element which lies in the height direction between the contact surface and the next lower step surface.

[0026] It is preferably provided that the thickness of the narrowest step is less than or equal to the distance that the opposing surfaces of the center profiles have from each other, in particular at the location of the sealing element, in a closed state of a sliding door.

[0027] The sealing profile preferably consists of an elastic material, in particular an elastomer material, preferably EPDM or soft PVC and is preferably used as a hand-drawn seal.

[0028] The sealing profile is preferably detachably connectable to the central profile, preferably a cover profile of the central profile, using at least two fastening elements, e.g. locking elements.

[0029] For this purpose, the sealing base preferably has, viewed in cross-section, a pin on its rear side, in particular a pin equipped with a hollow chamber, which can be pressed into a receiving recess on the central profile, in particular on a cover profile of a central profile.

[0030] Such a receiving recess is preferably formed on the central profile or its cover profile as a vertically extending groove.

[0031] Further preferably, the sealing base, viewed in cross-section, has a hollow chamber on its rear side, in particular which is located laterally next to a preferably provided aforementioned pin in a direction parallel to the sealing base, with which the sealing base can be placed on the rear side against a contact surface, in particular a stepped contact surface of a central profile, in particular a cover profile of a central profile, in particular when used as intended.

[0032] It is preferably further provided that a web extends away from the rear of the sealing base, which web partially delimits the hollow chamber, in particular on the room side, and projects beyond it, wherein the free end of the web has an angled nose, in particular which extends parallel to the sealing base, which can be inserted into an undercut on the central profile, in particular into an undercut on a cover profile of a central profile, in particular is inserted in the intended use.

[0033] When manually installing, the tab is preferably first hooked into the undercut of the cover profile, then the pin is snapped into the cover profile's receiving recess / groove. This installation method allows for easy replacement even in the event of damage to the seal.

[0034] It is preferably provided that each of the two sealing areas / legs of the sealing profile comprises a hollow chamber, in particular wherein one of the two hollow chambers, in particular the hollow chamber facing the room side of the sealing profile, can be closed with the respective sealing element, in particular is closed when used as intended.

[0035] Preferably, such a hollow chamber creates an air-filled space, which improves the insulating properties of the sealing profile and also provides the sealing area with good flexibility, which supports the sealing function.

[0036] It is further preferably provided that hollow chambers are delimited in cross section by webs, wherein at least one of the webs of both hollow chambers, in particular the two webs of the sealing profile which point towards the recess and / or delimit it, is arranged at an acute angle to the sealing base.

[0037] This preferably achieves good flexibility of the hollow chamber webs and thus of the sealing area formed thereby in the direction of the sealing base.

[0038] Even more preferably, it is provided that each sealing region, in particular each hollow chamber, has at least one sealing lip on the side facing away from the front side of the sealing base, in particular the side facing the surface of an opposite central profile.

[0039] Particularly preferably, the sealing area or the hollow chamber which faces the weather side has two sealing lips whose free ends are spaced apart from one another in a plane parallel to the sealing base.

[0040] Preferably, a double seal is achieved on the weather side.

[0041] The sealing profile according to the invention thus preferably has four hollow chambers arranged inside the sealing profile. The hollow chambers serve as insulation, and the resulting web structure offers elastic deformability, which is supported by the soft material. Maximum flexibility is achieved with minimal material expenditure.

[0042] The at least two sealing lips preferably provided on the weather side of the sealing profile, which preferably spread apart from each other in opposite directions in the sealing state, form a widened sealing surface which is suitable for keeping rainwater out of the room.

[0043] When the sliding door is closed, the sealing profile has an opening at the top and bottom ends of the pressure equalization chamber, facing only the weather side. This opening is not created by machining, for example, by subsequently inserting holes or slots, but rather by the upper end cross-section or lower end cross-section of the sealing profile being open and partially covered by an adjacent sealing element, thus providing a seal only toward the room side. The sealing element is preferably an elastically deformable component, preferably made of foam- or rubber-like material.

[0044] The overlapping sealing elements cover from the room side, so that the open part of the sealing profile only faces and is connected to the weather side. The resulting upper and lower openings allow air to enter and exit the recess in the sealing profile or into the pressure equalization chamber created by it. The pressure in the pressure equalization chamber, which extends between the upper and lower openings, is the same as in the outside environment on the weather side. These openings act as pressure equalization openings, which, when the sealing profile is sealed, allow air to pass from the weather side in front of the sliding door into the pressure equalization chamber in the sliding door. The upper and lower openings ensure that the pressure in the pressure equalization chamber is the same as in the outside environment. No negative pressure is created. Capillary forces are reduced, thus preventing water from entering.

[0045] The additional benefit is that weather-related moisture can be drained away via this channel in addition to the sealing lips mentioned above.

[0046] Since there is no structural connection between the pressure equalization chamber and the interior of the room, no draft can enter the living space.

[0047] The sealing profile has at least two elastic sealing lips, which are preferably and essentially arranged in a mirror image.

[0048] The sealing profile preferably has at least one sealing lip, which, when sealed, rests against the surface / outer wall of the center profile of the sliding sash inside the pressure equalization chamber. The air pressure in the pressure equalization chamber preferably exerts a supporting pressure on the sealing lip against the outer wall of the sliding sash.

[0049] Watertightness is primarily achieved by the sealing lips. A complementary effect is provided by the pressure equalization chamber, which ensures equal air pressure both inside and outside the room and also serves as a drainage channel. The sealing lip located on the room side ensures the final airtightness.

[0050] The sealing profile preferably forms a 3-stage seal: Sealing lips positioned on the weather side repel water. The pressure equalization chamber acts as a "windbreak," maintaining the same air pressure as the outside environment. It also serves as a drainage channel, diverting water penetrating through the sealing lips during periods of high moisture, such as heavy rain, and also helping to drain moisture from the outside air. The area outside the sealing lip, which faces the interior of the room, is not only watertight but also airtight.

[0051] The invention is explained in more detail below with reference to the drawings.

[0052] The figures show in detail: Fig. 1 shows a section through the middle section of a sliding door in a parallel position. Fig. 2 shows a section through the middle section of a sliding door in the closed position and sealed state. Fig. 2a shows a detailed section through the seal in the middle section of a sliding door in the closed position and sealed state. Fig. 3 shows an end section of a seal with sealing element in a perspective view without a sliding leaf. Fig. 4 shows an end section of a sealing profile with sealing element in a perspective view without a sliding leaf. Fig. 5 shows an end section of a sealing profile in the front view with a post profile without a sliding leaf. Fig. 6 shows a sealing element.

[0053] In Figure 1The central section of a sliding door according to the invention is shown in section. The frame is not visible in this view. The central profile 10 of the fixed panel and the central profile 20 of the sliding panel are positioned relative to each other in such a way that they overlap. Alternatively, two sliding panels can be provided that overlap with the central profiles in the central section.

[0054] A gap 60 is formed between the mutually facing surfaces of both central profiles 10, 20, which, in the unsealed state, creates a connection between the interior of the room and the external environment.

[0055] The Figure 1shows an unlocked sliding door. Attached to the surface of the center profile 10 of the fixed panel, more precisely to a surface of a cover profile 30 that is part of this center profile 10, is a sealing profile 50 that serves to seal this gap, preferably in conjunction with a sealing profile not according to the invention on the cover profile 30 of the opposite center profile 20.

[0056] In the non-closed state, the sealing profile 50 does not rest on the surface 21 of the opposite central profile 20, but has a gap 60 thereto.

[0057] In this description of the invention, the "opposite" center profile always refers to the center profile to which the sealing profile 50 is not attached. The sealing profile thus always interacts with the opposite center profile to form a seal by sealing contact with its surface. The opposite center profile is preferably the center profile of the sliding sash.

[0058] A glass element 30 is also attached to the central profile 10 of the fixed panel, as is a glass element 40 to the central profile 20 of the sliding sash.

[0059] The Figure 2 shows the same overlapped arrangement of the center profiles 10 and 20, but with the sliding door closed. In this closed position, the center profiles 10, 20 are spaced closer together, and the sealing profile 50 is therefore pressed with its sealing areas 58, 59 against the surface 21 of the opposite center profile 20.

[0060] The Figure 2a shows an excerpt from Figure 2 with a detailed look at the sealing profile 50.

[0061] The sealing profile 50 has a sealing base 57, which, in the cross-section shown here, is formed by a web perpendicular to the direction of extension of the sealing profile 50, which in the actual sealing profile 50 is a flat element. This web of the sealing base 57 is parallel to the surface 21 of the opposite center profile 20. The sealing base 57 has a rear side, with which the sealing profile 50 is attached to the center profile 10, and a front side facing the opposite center profile 20.

[0062] On the front side and projecting toward the opposite center profile 20, a first sealing area 58 is arranged on the sealing base 57, and a second sealing area 59 is arranged at a distance therefrom. Both sealing areas 58, 59 run parallel and spaced apart from one another in the direction of extension of the sealing profile 50.

[0063] Both sealing areas 58, 59 can also be understood as legs of the sealing profile 50, which have a sealing interaction with the surface 21 of the opposite central profile 20 at their free ends.

[0064] Between the sealing areas 58, 59, a recess A is formed in the sealing profile 50, which together with the surface of the opposite central profile 20 forms a pressure equalization chamber. In the cross-sectional view of the Figure 2a The pressure equalization chamber is thus defined by the sealing base 57, the sealing areas 58, 59, and the surface 21 of the opposite central profile 20. In the direction of extension of the sealing profile 50, however, the pressure equalization chamber is open at both ends of the sealing profile 50.

[0065] Here, the construction is such that each sealing area 58, 59 has a hollow chamber I or II. The webs 52 and 52' of the hollow chambers I and II facing the recess A are preferably at an acute angle to the sealing base 57.

[0066] This means that the two sealing lips 53, 54 of the first sealing area 58, which is oriented towards the weather side here, and the sealing lip 55 of the second sealing area 59, which faces the room side, are mounted very flexibly.

[0067] For fastening, the sealing base 57 has a pin 51 with a hollow chamber IV on the rear side and another hollow chamber III located next to it, which is delimited in cross section by webs and rests on a stepped surface of the central profile 10 or the cover profile 30 facing the opposite central profile 20.

[0068] The hollow chamber III is bounded on the room side by a web that projects beyond the hollow chamber III from the sealing base 57, preferably at an obtuse angle thereto, and has an angled nose 56, preferably running parallel to the sealing base, which engages in an undercut on the central profile 10 or its cover profile 30, open in the sliding direction. The pin 51 is pressed into a receiving recess 11, in particular a groove 11, on the central profile 10 or its cover profile 30 as a further fastening means.

[0069] According to the invention, the sealing profile 50 ends on both sides at a distance from the surface of the profiles of the frame 90.

[0070] According to the representations of the Figures 3 to 5According to the invention, it is now provided to insert a respective sealing element 70 in addition to the sealing profile 50 at its upper and lower ends. This respective sealing element 70 is arranged between the end face of the sealing profile cross-section and the surface of the frame 90 at the top and bottom, in such a way that the contact surface 71 of the sealing element 70 facing the end face of the sealing profile 50 closes the open end face cross-section of the sealing profile 50 only towards the room side. Preferably, the contact surface 71 covers the open cross-section and the recess A over no more than half of the width of the sealing profile 50 in the sliding direction / perpendicular to the direction of extension. Thus, an opening c facing the weather side remains according to the Figures 3 to 5 .

[0071] The sealing element 70 has a height direction in which it extends from the lower support surface, with which it rests on the surface of the frame, towards the upper contact surface 71. In this height direction, the thickness of the sealing element decreases in a stepped manner towards the contact surface 71. The uppermost step preferably has a thickness that is less than or equal to the distance between the surface 21 of the opposite center profile 20 and the stepped contact surface on the center profile 10 or the cover profile 30, against which the rear hollow chamber III rests.

[0072] Thus, the sealing element 70 can be arranged with respect to Figure 2abe arranged under the right-hand part of the sealing profile 50, wherein the surface 21 of the opposite central profile 20, when the sliding door is closed, lies tightly against the sealing element 70 at its step surface below the contact surface 71. The pressure equalization chamber at the recess A is therefore closed to the right / room side and open to the left / weather side.

[0073] The gradation of the sealing element 70 preferably corresponds to the gradation of the respective horizontal sash profile of the sliding sash on its side facing the frame.

[0074] The Figure 6shows such a sealing element 70 as a stepped body, the thickness of which decreases in a stepped manner upwards towards the contact surface 71. Here, it can also be seen that, preferably on the weather side of the sealing element 70, a projection 72 is present, the surface of which continues the contact surface 71 towards the weather side. This projection can preferably be clamped behind a top strip 91 that is placed on the frame 90. The sealing element 70 can preferably be enclosed between the top strip 92 and a strip 93 placed on the other side of the sealing element 70 on the frame 90. List of reference symbols

[0075] 100 Middle section of a sliding door 100' Middle section of a sliding door on the lower frame without sliding leaf 10 Middle profile of the fixed field 11 Recess / groove 20 Middle profile profile of the sliding leaf 21 Surface of the opposite middle profile profile 20 22 Glazing bead 30 Cover profile 40 Glass element 50 Sealing profile 51 Pin 52, 52' Elastic webs 53, 54, 55 Sealing lips A Recess / pressure equalization chamber c Lower opening (in closed position) 56 Nose 57 Sealing base 58, 59 Sealing areas I, II, III, IV Hollow chambers 60 Gap 70 Sealing element 71 Contact surface 72 Neck 90 Frame 91 Top strip on the weather side on the frame 92 Strip on the room side on the frame

Claims

1. Sealing system for sealing between the opposing central profiles (10, 20) of a sliding door (100), comprising a sealing profile (50) which can be fastened to one of the central profiles (10, 20), preferably to the central profile (10) of a fixed panel of a sliding door (100), in the vertical direction of extension, characterized in thatthe sealing profile (50) comprises a sealing base (57) which can be fastened by its rear side to the central profile (10), in particular to a cover profile (30) of the central profile (10), and which has two projecting sealing regions (58, 59) running parallel to one another at a distance from one another on its front side, wherein a recess (A) is formed between the sealing regions (58, 59) and the front side of the sealing base (57) as viewed in cross-section, in particular with which a pressure equalization chamber can be formed in cooperation with a surface (21) of an opposite central profile (20), wherein two sealing elements (70) are further provided and with each sealing element (70) the frontal cross-section of the sealing profile (50) can be partially covered by contact at a respective end lying in the direction of extension, in particular is partially covered when used as intended.

2. Sealing system according to claim 1, characterized in thateach of the two sealing areas (58, 59) of the sealing profile (50) comprises a hollow chamber (I, II), in particular wherein one of the two hollow chambers (II), in particular the hollow chamber (II) facing the room side of the sealing profile (50), can be closed with the respective sealing element (70), in particular is closed when used as intended.

3. Sealing system according to claim 2, characterized in that the hollow chambers (I, II) are delimited in cross-section by webs (52, 52'), wherein at least one of the webs of both hollow chambers (I, II) is arranged at an acute angle to the sealing base (57).

4. Sealing system according to one of the preceding claims, characterized in thateach sealing area (58, 59), in particular each hollow chamber (I, II) according to claim 2 or 3, has at least one sealing lip (53, 54, 55) on the side facing away from the front side of the sealing base (57), in particular towards the surface (21) of an opposite central profile (20), preferably the sealing area (58) or the hollow chamber (I) which faces the weather side has two sealing lips (53, 54) whose free ends are spaced apart from one another in a plane parallel to the sealing base (57).

5. Sealing system according to one of the preceding claims, characterized in that the sealing base (57), viewed in cross-section, has on its rear side a pin (51), in particular a pin (51) equipped with a hollow chamber (IV), which can be pressed into a receiving recess (11) on the central profile (10), in particular on a cover profile (30) of a central profile (10).

6. Sealing system according to one of the preceding claims, characterized in that the sealing base (57), viewed in cross-section, has a hollow chamber (III) on its rear side, in particular which is located laterally next to a pin (51) according to claim 5 in a direction parallel to the sealing base (57), with which the sealing base (57) can be placed on the rear side against a contact surface, in particular a stepped contact surface of a central profile (10), in particular a cover profile (30) of a central profile (10), in particular when used as intended.

7. Sealing system according to claim 6, characterized in thata web extends away from the rear of the sealing base (57), which web partially delimits the hollow chamber (III), in particular on the room side, and projects beyond it, wherein the free end of the web has an angled nose (56), in particular which extends parallel to the sealing base (57), which can be inserted into an undercut on the central profile (10), in particular into an undercut on a cover profile (30) of a central profile (10), in particular is inserted in the intended use.

8. Sealing system according to one of the preceding claims, characterized in thateach sealing element (70) is formed by a body stepped in a height direction, in particular made of an elastomeric material, wherein the body is tapered in the height direction, for which purpose the thickness of the body viewed in a thickness direction decreases after each step, in particular wherein the thickness direction corresponds to the direction of the spacing between two opposing central profiles (10, 20), wherein the narrowest step in the thickness direction and highest step in the height direction forms a contact surface (71) with which the cross-section of the sealing profile (50) can be partially covered in a contacting manner.

9. Sealing system according to claim 8, characterized in that the thickness of the narrowest step is less than or equal to the distance that the opposing surfaces of the central profiles (10, 20) take from each other in a closed state of a sliding door, in particular at the location of the sealing element (70).

10. Sliding door comprising a frame (90) in which a fixed panel and a sliding leaf or two sliding leaves are arranged, which in the closed state have overlapping central profiles (10, 20), characterized in that on one of the central profiles (10, 20), in particular on the central profile (10) of the fixed field, a sealing profile (50) of the sealing system according to one of the preceding claims is arranged running in the vertical direction, the open cross section of which is partially closed on the room side at the respective end of the sealing profile (50) with a respective sealing element (70) of the sealing system according to one of the preceding claims, which is arranged between the end of the sealing profile (50) and the frame (90).

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