Fitting for a sliding door

Abstract

Fitting for a sliding door (3) with a threshold (2) on which a guide rail (8) for rollers (6) is provided on an underside of the sliding door (3), which is movable between a raised position and a lowered position, wherein the sliding door (3) is movable in the raised position of the guide rail (8) and is fixed on the threshold (2) in the lowered position, characterized in that the guide rail (8) is at least partially covered on its upper side by at least one strip-shaped cover element (10) in the lowered position.

Description

[0001] The present invention relates to a fitting for a sliding door with a threshold, on which a guide rail for rollers is provided on an underside of the sliding door, which is movable between a raised position and a lowered position, wherein the sliding door is movable in the raised position of the guide rail and is fixed to the threshold in the lowered position.

[0002] DE 1559 725 B discloses a lifting fitting for a sash frame of a sliding door, in which a guide rail can be raised and lowered to raise or lower the sliding door from a fixed position to a movable position. Even if the guide rail is partially located within the sash frame, it protrudes from a threshold in the lowered position and presents an obstacle when walking on the threshold.

[0003] DE 10 2015 122 671 A1 discloses a fitting arrangement with a frame-side adjustment element that includes a track strip which can be raised or lowered by an electric motor. In the raised position, the track strip can lift a lift-and-slide door from the sill of a frame so that it can be moved along the track strip. In the lowered position, the lift-and-slide door rests on the sill via sealing elements and is thus secured. However, in this fitting arrangement as well, in the lowered position, the upper surface of the track strip protrudes above the surface of the sill and forms an obstruction. Furthermore, the area between the movable track strip and the stationary sill is prone to soiling.

[0004] It is therefore an object of the present invention to create a fitting for a sliding door that is designed to be as barrier-free as possible and offers an aesthetically pleasing appearance.

[0005] This problem is solved with a fitting for a sliding door having the features of claim 1.

[0006] In the fitting according to the invention, a guide rail on the threshold is movable between a raised and a lowered position, wherein, in the lowered position, the guide rail is at least partially covered on its upper side by at least one strip-shaped cover element. The cover element thus at least partially conceals the upper side of the guide rail, enabling an improved, essentially barrier-free transition at the threshold via the arrangement of the cover element. Furthermore, the at least one cover element provides a more closed surface, which is also visually appealing.

[0007] Preferably, the at least one cover element is arranged in the lowered position of the guide rail, essentially flush with the top surface of the threshold. The cover element can be positioned at the same height as the adjacent top surface, i.e., flush, so that there is no longer any protruding obstruction. For a particularly visually appealing design, the cover element can have a similar color to the surrounding top surface of the threshold, for example, metallic or gray.

[0008] In a preferred embodiment, the guide rail is arranged completely below the top of the threshold in the lowered position. This creates a gap between the top of the guide rail and the underside of the roller, which is at least partially covered by the at least one cover element.

[0009] Preferably, two strip-shaped cover elements are provided, with the guide rail projecting upwards between the two cover elements in the raised position. In the lowered position, the two cover elements can then substantially completely cover the top of the guide rail. For this purpose, at least one, preferably both, cover elements can be made of an elastic material or be entirely composed of such material.

[0010] The at least one cover element, preferably both cover elements, can be designed as sealing profiles, each of which is fixed to a groove in the threshold by a foot section. This allows each cover element to be easily mounted on the threshold by inserting a foot element into a preferably undercut groove, either by clamping or snapping it into place.

[0011] Preferably, the at least one strip-shaped cover element has a flexible sealing lip that is deformed when the track is raised or lowered. Raising the track allows the flexible sealing lip to bend. Optionally, two cover elements can be fixed to the threshold, each having a sealing lip on its facing side that substantially covers the entire top surface of the track, creating a flat surface and protecting the track beneath the two cover elements.

[0012] For easy movement of the track, it can be raised and lowered via a lifting mechanism located in the floor threshold, with a drive rail that moves longitudinally along the track. The lifting mechanism can be either motor-driven or manually operated.

[0013] The fitting according to the invention is preferably used in a door element with a frame and a sliding door arranged in the frame, wherein a fixed panel or at least one further sliding door may also be provided in the frame.

[0014] The invention is explained in more detail below with reference to an exemplary embodiment and the accompanying drawings. These show: Fig. 1 a sectional view through a fitting according to the invention in a lowered position, Fig. 2 a sectional view through the fitting of the Fig. 1 in an elevated position, and Fig. 3 a sectional view through the sill of the fitting Fig. 1.

[0015] A door element 1 comprises a frame with a threshold 2 on which a sliding door 3 is movably mounted. The sliding door 3 includes a lower frame profile 4 on which a downwardly open recess is formed in which a roller 6 is rotatably mounted on a holder 5. A plurality of rollers 6 can be provided across the width of the sliding door 3. A seal 7 is provided on both sides of the downwardly open recess with the roller 6, which, in a lowered position, contacts a surface of the threshold 2 and thus provides a seal. In the Fig. In the lowered position shown in Figure 1, the sliding door 3 is clamped to the threshold 2 by the weight forces and cannot be moved.

[0016] The threshold 2 comprises a profile 16, for example made of metal or plastic, on which a guide rail 8 with a lifting mechanism is arranged in an upwardly open receptacle. The lifting mechanism comprises two drive rails 9 which, when moved longitudinally along the guide rail 8, raise the guide rail 8 from a lowered position according to Fig. 1 into a raised position according to Fig. 2 move. The lifting mechanism with the drive rails 9 can optionally be operated manually or driven by a motor.

[0017] In the lowered position, two strip-shaped cover elements 10 are located on the upper side of the track 8, essentially covering the entire upper surface of the track 8. The strip-shaped cover elements 10 are made of an elastic material, for example, an elastic plastic such as EPDM, which can deform when the track 8 is raised. When the track 8 is raised, sealing lips 12 on the cover elements 10 are pressed outwards and deformed, causing the track 8 to come into contact with the underside of the roller 6 and then lift the sliding door 3 over the rollers 6, as shown in Fig. Figure 2 shows that in the raised position of the sliding door 3, it can be moved along the track 8.

[0018] In Fig.Figure 3 shows the threshold 2 without the sliding door 3. It can be seen that the threshold 2 has a flat surface 13 when the track 8 is in the lowered position. In this position, the two cover elements 10 are aligned with one upper surface flush with an adjacent upper surface 13 of the threshold 2, so that the surface 13 can be easily cleaned and also has no protruding obstruction. The cover elements 10 have a sealing lip 12 on their facing sides, which can butt against each other. Adjacent to the sealing lip 12, a hollow chamber 14 is formed in the cover element 10 to increase elasticity in this area.

[0019] Each cover element 10 is fixed to the floor threshold 2 via a foot element 11 in an undercut groove. The foot element 11 is positioned above a drive rail 9 for moving the running rail 8.

[0020] The threshold 2 has a cover profile 15 adjacent to the area with the running rail 8. Instead of the cover profile 15, another lever mechanism with a running rail 8 can be provided in this area if a second sliding door 3 is to be provided that can be moved along the threshold 2.

[0021] In the illustrated embodiment, two cover elements 10 in the form of elastic sealing profiles are provided, which cover the guide rail 8 with a sealing lip 12. The sealing profiles can be made of an extruded elastic material. It is also possible to use a sealing profile made of different materials instead of a single-piece sealing profile.

[0022] Raising and lowering the guide rail 8 causes deformation of the two cover elements 10. It is also possible, of course, to provide a mechanism to move the cover elements 10 when the guide rail 8 is raised, for example, to pivot them or move them along a curve. Reference symbol list 1 door element 2. Threshold 3 sliding doors 4 frame profile 5 holders 6 roller 7 Seal 8 guide rail 9 Drive rail 10 Cover element 11 Foot element 12 Sealing lip 13 Surface 14 Hollow chamber 15 Cover profile 16 Profile

Claims

[1] Fitting for a sliding door (3) with a threshold (2) on which a guide rail (8) for rollers (6) is provided on an underside of the sliding door (3) which is movable between a raised position and a lowered position, wherein the sliding door (3) is movable in the raised position of the guide rail (8) and is fixed to the threshold (2) in the lowered position, characterized by that the running rail (8) in the lowered position is at least partially covered on its upper side by at least one strip-shaped cover element (10). [2] Fitting according to claim 1, characterized by , that the at least one cover element (10) is arranged in the lowered position of the running rail (8) essentially flush with a top surface (13) of the floor threshold (2). [3] Fitting according to claim 1 or 2, characterized by, that the guide rail (8) is arranged completely below a top surface (13) of the threshold (2) in the lowered position. [4] Fitting according to any one of the preceding claims, characterized by that two strip-shaped cover elements (10) are provided and the running rail (8) is arranged in the raised position between the two cover elements (10) projecting upwards. [5] Fitting according to any one of the preceding claims, characterized by , that the at least one cover element (10) has an elastic material. [6] Fitting according to any one of the preceding claims, characterized by , that the at least one cover element (10) is designed as a sealing profile which is fixed to a groove of the floor threshold (2) with a foot section (11). [7] Fitting according to any one of the preceding claims, characterized by, that the at least one strip-shaped cover element (10) has a flexible sealing lip (12) which is deformed when the running rail (8) is raised and lowered. [8] Fitting according to claim 7, characterized by , that two cover elements (10) are fixed to the floor threshold (2), each having a sealing lip (12) on the side facing each other, which in the lowered position of the running rail (8) substantially completely cover the top of the running rail (8). [9] Fitting according to any one of the preceding claims, characterized by , that the running rail (8) can be raised and lowered via a lifting mechanism arranged in the floor threshold (2) with a drive rail (9) movable in the longitudinal direction of the running rail (8). [10] Door element (1) with a frame and the sliding door (3) arranged in the frame, which is movable in the frame via a fitting according to one of the preceding claims.

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