Window or door with central closer between two leaves

Abstract

The invention relates to a window or a door (10) having two leaves (14a, 14b) which, when in their sliding position, can be displaced in the direction of their main plane (16a, 16b). Only when the two leaves (14a, 14b) are in the closed position are they held against one another in the region of a central aperture (26) of the door (10) by means of a fitting arrangement (24). Arranged on each leaf (14a, 14b) there is a driving-rod arrangement (20a, 20b), to which one closing element (22a, 22b) is movably connected in each case. When the two leaves (14a, 14b) are in the closed position, the closing elements (22a, 22b) preferably engage in one another in such a way that the leaves (14a, 14b) cannot be moved relative to one another at least transversely to their main planes (16a, 16b), thus creating a particularly good seal with respect to one another. Further preferably, the closing elements (22a, 22b) engage in one another when the two leaves (14a, 14b) are in the closed position in such a way that the leaves (14a, 14b) cannot be moved in the direction of their main plane (16a, 16b) in order to provide improved protection against break-in. The closing elements (22a, 22b) can each be connected to a driving-rod arrangement (20a, 20b) via a deflected connector (56a, 56b). At least one closing element (22a, 22b) can be moved and / or pivoted in the direction of the main plane (16a, 16b) of the respective leaf (14a, 14b). As a result, leaf spars (66a, 66b) can preferably at least largely overlap when the two leaves (14a, 14b) are in the closed position, which has a visually very appealing effect. The invention also relates to a method for opening the window or the door (10).

Description

[0001] - 1 - 01.08.2025

[0002] SP14039PCT

[0003] Applicant:

[0004] Roto Frank Window and Door Technology GmbH

[0005] Wilhelm-Frank-Platz 1

[0006] 70771 Leinfelden-Echterdingen

[0007] Germany

[0008] Representative:

[0009] KOHLER. SCHMID MÖBUS Patent Attorneys

[0010] limited liability partnership

[0011] Gropiusplatz 10

[0012] 70563 Stuttgart

[0013] Germany

[0014] Window or door with a center closer between two sashes

[0015] Background of the invention

[0016] The invention relates to a window or door with the following features: a) a fixed frame; b) a first sash that can be moved from its closed position transversely to its main plane into its sliding position and, in the sliding position, is displaceable in the direction of its main plane; c) a second sash that can be moved from its closed position transversely to its main plane into its sliding position and, in the sliding position, is displaceable in the direction of its main plane; d) wherein the sashes partially overlap in the viewing direction perpendicular to the main plane of the first sash when both sashes are in their closed position; e) a first drive rod assembly on the first sash, wherein the first sash is opened by actuating the first drive rod assembly

[0017] Roto Frank Window and Door Technology GmbH SP14039PCT - 2 - 01.08.2025 is movable from its closed position to its sliding position independently of the second sash; f) a second drive rod assembly on the second sash, wherein the second sash is movable from its closed position to its sliding position independently of the first sash by actuating the second drive rod assembly; g) a first locking element on the first sash, which is arranged towards the second sash when both sashes are in the closed position, wherein the first locking element is coupled to the first drive rod assembly and is movable relative to the first sash, wherein the first locking element is positively connected to a second locking element in the closed position of both sashes;(h) the second locking element on the second sash, which is arranged towards the first sash when both sashes are in the closed position, wherein the second locking element is coupled to the second drive rod assembly and is movable relative to the second sash, wherein the second locking element is positively connected to the first locking element in the closed position of both sashes.;

[0018] The invention further relates to a method for opening such a window or door.

[0019] A previously described window, a previously described door, and a previously described method are known from DE 10 2021 211 638 B3. The locking elements disclosed therein are both movable transversely to the main planes of the sashes. However, a disadvantage of the known locking elements is that the two sashes, in particular adjacent vertical sash mullions of the two sashes, hardly overlap in their closed position. Since the sashes typically have panes set in sash frames, the barely overlapping sash mullions occupy a large proportion of the total surface area of ​​the window or door in the closed position. In particular, sash mullions that barely overlap at the central pivot appear visually very wide.

[0020] Roto Frank Window and Door Technology GmbH SP14039PCT - 3 - 01.08.2025

[0021] Object of the invention

[0022] It is therefore an object of the invention to provide a window, a door and a method that enable a significantly more visually attractive view of the central break in sashes in the closed position and preferably still enable a stable connection of sash mullions.

[0023] Description of the invention

[0024] This problem is solved according to the invention by a window or a door according to claim 1 and a method according to claim 15. The dependent claims describe preferred embodiments.

[0025] The window or door according to the invention thus has / have the following feature(s): i) the first locking element is movable by means of the actuation of the first drive rod assembly i. parallel to the main plane of the first sash; and / or ii. pivotable; wherein the first locking element is no longer positively connected to the second locking element in the sliding position of the first sash; and / or j) the second locking element is movable by means of the actuation of the second drive rod assembly i. parallel to the main plane of the second sash; and / or ii. pivotable; wherein the second locking element is no longer positively connected to the first locking element in the sliding position of the second sash.

[0026] Roto Frank Window and Door Technology GmbH SP14039PCT - 4 - 01.08.2025

[0027] The first locking element, which is movable and / or pivotable parallel to the main plane of the first sash, preferably linearly, allows for a particularly space-saving arrangement of the two locking elements between the sashes, especially between the sash mullions of the two sashes. Alternatively or additionally, the second locking element is movable and / or pivotable parallel to the main plane of the second sash, preferably linearly. This allows the sash mullions to overlap particularly well, giving the window or door a visually light appearance.

[0028] In the closed position of both leaves, the two locking elements are positively locked against each other; the two locking elements interlock. An interlock is understood to mean, in particular, that the locking elements are positively locked against each other in the direction of movement perpendicular to the main planes of the leaves; the leaves cannot be pulled apart perpendicular to their main planes. Preferably, with the interlock, the locking elements are held positively locked against each other in such a way that the leaves cannot be moved further towards each other in the direction of their main planes, thus preventing further overlap.

[0029] If even one of the leaves is in the sliding position, the two locking elements are no longer held securely together and the two leaves can be moved relative to each other.

[0030] The window or door is preferably designed without a strut of the fixed frame at the central break. The design of the window or door according to the invention is referred to in particular as "Scheme D" or "opposing sliding sashes on two parallel guide rails".

[0031] The first locking element can be moved transversely to the main plane of the first sash by actuating the first connecting rod assembly. Alternatively, the second locking element can be moved transversely to the main plane of the second sash by actuating the second connecting rod assembly. However, at least one of the two locking elements is designed to be movable and / or pivotable within the main plane of the corresponding sash. The first locking element

[0032] Roto Frank Fenster- und Türtechnologie GmbH SP14039PCT - 5 - 01.08.2025 can form a center closer between the sashes together with the second closing element.

[0033] In a preferred embodiment of the invention, the first locking element is movable horizontally and / or vertically by means of the first drive rod arrangement. Alternatively or additionally, the second locking element can be moved horizontally and / or vertically by means of the second drive rod arrangement.

[0034] Terms like "vertical", "horizontal", "top", "bottom", etc. generally refer to the installed position of the window or door. The positions of the sashes (closed position / sliding position) refer analogously to the positions of the locking mechanisms.

[0035] To significantly simplify the design of the window or door, the first and second locking elements can be designed to be movable only vertically.

[0036] A structurally simple design of the window or door can still be achieved if the two drive rod arrangements in the area of ​​the closing elements are moved parallel to each other in the same direction or in opposite directions.

[0037] Preferably, both the first locking element and the second locking element can be moved downwards or both upwards from the closed position to the sliding position. Alternatively, one of the locking elements can be moved upwards from the closed position to the sliding position, and the other locking element can be moved downwards from the closed position to the sliding position.

[0038] The first wing can have a first wing spar and the second wing can have a second wing spar, with both wing spars overlapping by more than 40% when the wings are closed. More preferably, the two wing spars overlap by more than 60%, and particularly preferably by more than 80%. This results in a visually appealing appearance of the

[0039] Roto Frank Window and Door Technology GmbH SP14039PCT - 6 - 01.08.2025

[0040] a reliable seal between the window or door and the two sashes can be achieved.

[0041] In one embodiment of the locking elements, the first locking element can be in the form of a locking pin and the second locking element in the form of a locking piece to receive the locking pin in the closed position of the wings.

[0042] The locking bolt is preferably mushroom-shaped. More preferably, the strike plate can have an elongated hole and / or a Q-shaped groove in cross-section, which is engaged by a mushroom-headed section of the locking bolt when both leaves are closed. A Q-shaped groove in cross-section is understood to mean, in particular, that the groove has a constriction on the opening side. The elongated hole and / or the Q-shaped groove in cross-section can extend vertically to ensure precise, exclusively vertical movement of the locking bolt and the strike plate.

[0043] The strike plate may have an insertion ramp that rises perpendicular to the main plane of the second sash to facilitate the insertion of the locking bolt. Alternatively or additionally, the strike plate may have an insertion ramp that rises in a plane parallel to the main plane of the second sash to facilitate the insertion of the locking bolt.

[0044] A guide element can be provided on the second sash to guide the locking mechanism. This guide element is preferably plate-shaped. Attaching the guide element to the second sash, preferably to the sash reinforcement, results in high stability and burglary resistance, as the two sashes are thereby firmly connected to each other perpendicular to their main sash planes.

[0045] A cam guide can be provided to guide the locking piece on the guide element.

[0046] Roto Frank Window and Door Technology GmbH SP14039PCT - 7 - 01.08.2025

[0047] At the central break, many tolerances of the window or door typically accumulate. To compensate for these tolerances, the guide element and / or the strike plate can be attached to the second sash with limited horizontal movement. Preferably, the guide element and / or the strike plate has / have an elongated hole in which a bolt and / or screw is / are guided to allow this horizontal movement.

[0048] In a further preferred embodiment of the invention, the first locking element and the second locking element are each designed in a hook shape. This simplifies the manufacturing of the locking elements. Even more preferably, the locking elements are identical.

[0049] One locking element can have a projection that, in the closed position of the sashes, engages in a recess of the other locking element. More preferably, both locking elements each have at least one projection and one recess, wherein, in the closed position of the sashes, a projection of one locking element engages in the recess of the other locking element and vice versa.

[0050] In order to compensate for tolerances, especially horizontal tolerances, the recess(s) can each be designed in the form of an elongated groove or a slot.

[0051] The first drive rod assembly is preferably arranged on the end face of the first wing, i.e., pointing in the sliding direction of the first wing. In this case, the first locking element can be connected to the first drive rod assembly via a deflected connector. A deflected connector is understood to be, in particular, any shape that allows the first drive rod assembly on an end face of the first wing to be connected to the first locking element horizontally, especially an angle or a bent element.

[0052] Roto Frank Window and Door Technology GmbH SP14039PCT - 8 - 01.08.2025

[0053] The second drive rod assembly is preferably arranged on the end face of the second wing, i.e., pointing in the sliding direction of the second wing. In this case, the second locking element can be connected to the second drive rod assembly via a deflected connector. A deflected connector is understood to be, in particular, any shape that allows the second drive rod assembly on an end face of the second wing to be connected to the second locking element horizontally, especially an angle or a bent element.

[0054] A first retaining element can be arranged on the first door leaf to assist in holding the first locking element in the closed position. Alternatively or additionally, a second retaining element can be arranged on the second door leaf to assist in holding the second locking element in the closed position. The first retaining element and / or the second retaining element can be L-shaped or U-shaped. Preferably, the first retaining element and / or the second retaining element is / are designed in the form of a guide plate.

[0055] The first connecting rod assembly can have a first carriage on the underside of the first wing, by which the first wing is movable transversely, in particular perpendicularly, to its main plane. The first carriage can have a carriage slide with a cam in which a bolt is guided, which is arranged or formed on a connecting rod of the first connecting rod assembly. A roller of the carriage can be arranged on the carriage slide, which bears against the fixed frame, in particular a guide rail of the fixed frame.

[0056] The first connecting rod assembly can have a first slider on the upper surface of the first wing, by which the first wing is movable transversely, in particular perpendicularly, to its main plane. The first slider can have a roller with which it is supported against the fixed frame and rolls along it. The first slider can have a slider slide with a cam in which a bolt is guided, which is arranged on a connecting rod of the first connecting rod assembly.

[0057] Roto Frank Window and Door Technology GmbH SP14039PCT - 9 - 01.08.2025 or is trained. The sliding slider can be supported directly or indirectly against the fixed frame.

[0058] The second connecting rod assembly can have a second carriage on the underside of the second wing, by which the second wing is movable transversely, in particular perpendicularly, to its main plane. The second carriage can have a carriage slide with a cam in which a bolt is guided, which is arranged or formed on a connecting rod of the second connecting rod assembly. A roller of the carriage can be arranged on the carriage slide, which bears against the fixed frame, in particular a guide rail of the fixed frame.

[0059] The second connecting rod assembly can have a second slider on the upper surface of the second wing, by which the second wing is movable transversely, in particular perpendicularly, to its main plane. The second slider can have a roller with which it is supported against the fixed frame and rolls along it. The second slider can have a slider slide with a cam in which a bolt is guided, which is arranged on or formed on a connecting rod of the second connecting rod assembly. The slider slide can be supported indirectly or directly against the fixed frame.

[0060] The drive rod assemblies can each be coupled to a handle for operating them. The window or door is preferably designed such that the sashes, from their closed position, are not yet moved transversely to their main planes during the first 30%, particularly the first 40%, preferably the first 50%, of the maximum handle movement. This allows the locking elements to disengage before the sashes are moved apart. The aforementioned free play of the drive rod assemblies can be achieved, for example, by a long, straight section of the cams of the carriage slides and / or the sliding slides extending longitudinally along the drive rod assembly.

[0061] Roto Frank Window and Door Technology GmbH SP14039PCT - 10 - 01.08.2025

[0062] The problem according to the invention is further solved by a method for opening a window or door described herein, comprising the following method steps:

[0063] A) Actuating the first connecting rod assembly, in particular with the first handle, to move the first sash from its closed position to its sliding position, thereby releasing the positive locking of the first locking element with the second locking element; and / or

[0064] B) Actuating the second drive rod assembly, in particular with the second handle, to move the second wing from its closed position to the sliding position, thereby releasing the positive locking of the second locking element with the first locking element.

[0065] Further advantages of the invention will become apparent from the description and the drawing. Likewise, the features mentioned above and those described in more detail below can each be used individually or in any combination according to the invention. The embodiments shown and described are not to be understood as an exhaustive list, but rather serve as examples for illustrating the invention.

[0066] Detailed description of the invention and drawing

[0067] Figures 1 to 4 each show an embodiment of a door according to the invention. Alternatively, the doors could each be designed in the form of a window.

[0068] Fig. a1a shows an isometric view of a door with a fitting arrangement, a first leaf in the closed position and a second leaf in the closed position.

[0069] Fig. lb shows an isometric view of the door from Fig. 1a with the first leaf in the sliding position.

[0070] Fig. lc shows an isometric view of the door from Fig. 1a with the second leaf in the sliding position.

[0071] Fig. Id shows an isometric view of the door from Fig. ala with both leaves in the sliding position.

[0072] Roto Frank Window and Door Technology GmbH SP14039PCT - 11 - 01.08.2025

[0073] Fig. 11 shows an isometric view of the fitting arrangement from Fig. 1a, in which a first locking element engages a second locking element, since both locking elements are in the closed position, analogous to the leaves of the door.

[0074] Fig. 11 shows an isometric view of the fitting arrangement from Fig. 11, in which the locking elements do not interlock.

[0075] Fig. lg shows an isometric view of the fitting arrangement from Fig. lc, in which the locking elements do not interlock.

[0076] Fig. lh shows an isometric view of the fitting arrangement from Fig. Id, in which the locking elements do not interlock.

[0077] Fig. li shows a longitudinal section through the door from Fig. 1a.

[0078] Fig. lj shows a longitudinal section through the door from Fig. lb.

[0079] Fig. lk shows a longitudinal section through the door from Fig. lc.

[0080] Fig. II shows a longitudinal section through the door from Fig. Id.

[0081] Fig. Im shows a top view of the second closing element in a first position on a guide element.

[0082] Fig. In shows a top view of the second closing element from Fig. Im in a second position on the guide element.

[0083] Fig. Io shows a longitudinal section through the second locking element of Figs. Im, In according to the section plane AA from Fig. In, showing the insertion ramps of the second locking element.

[0084] Fig. lp shows a top view of a variant of the second closing element and the guide element from Figs. lm-10, in a first position.

[0085] Fig. lq shows a top view of the second closing element and the guide element from Fig. lp in a second position.

[0086] Fig. lr shows a top view of the second closing element and the guide element from Fig. lp in a third position.

[0087] Fig. ls shows a top view of the second closing element and the guide element from Fig. lp in a fourth position.

[0088] Fig. 2a shows an isometric view of an alternative fitting arrangement, wherein a first locking element engages a second locking element

[0089] Roto Frank Fenster- und Türtechnologie GmbH SP14039PCT - 12 - 01.08.2025 engages behind, as both locking elements are in the closed position.

[0090] Fig. 2b shows an isometric view of the fitting arrangement from Fig. 2a, with the first locking element in the sliding position.

[0091] Fig. 2c shows an isometric view of the fitting arrangement from Fig. 2a, with the second locking element in the sliding position.

[0092] Fig. 2d shows an isometric view of the fitting arrangement from Fig. 2a, with both locking elements in the sliding position.

[0093] Fig. 2e shows a longitudinal section through a door with the fitting arrangement from Fig. 2a.

[0094] Fig. 2f shows a longitudinal section through a door with the fitting arrangement from Fig. 2b.

[0095] Fig. 2g shows a longitudinal section through a door with the fitting arrangement from Fig. 2c.

[0096] Fig. 2h shows a longitudinal section through a door with the fitting arrangement from Fig. 2d.

[0097] Fig. 3a shows an isometric view of an alternative fitting arrangement, wherein a first hook-shaped locking element engages a second hook-shaped locking element, as both locking elements are in the closed position.

[0098] Fig. 3b shows an isometric view of the fitting arrangement from Fig. 3a, with the first locking element in the sliding position.

[0099] Fig. 3c shows an isometric view of the fitting arrangement from Fig. 3a, with the second locking element in the sliding position,

[0100] Fig. 3d shows an isometric view of the fitting arrangement from Fig. 3a, with both locking elements in the sliding position.

[0101] Fig. 4a shows an isometric view of a door with an alternative fitting arrangement, wherein a first locking element engages a second locking element when both locking elements are in the closed position, the locking elements being connected by a projection of one locking element engaging in a recess of the other locking element.

[0102] Roto Frank Window and Door Technology GmbH SP14039PCT - 13 - 01.08.2025

[0103] Fig. 4b shows an isometric view of the fitting arrangement from Fig. 4a, with the first locking element in the sliding position.

[0104] Fig. 4c shows an isometric view of the fitting arrangement from Fig. 4a, with the second locking element in the sliding position.

[0105] Fig. 4d shows an isometric view of the fitting arrangement from Fig. 4a, with both locking elements in the sliding position.

[0106] Fig. 1a shows a door 10 with a fixed frame 12, a first leaf 14a and a second leaf 14b. The extent of the first leaf 14a defines its main plane 16a, the extent of the second leaf 14b defines its main plane 16b. In Fig. 1a, both leaves 14a, 14b are in their closed position; the door 10 is closed.

[0107] The leaves 14a, 14b can each be moved independently of one another into their sliding position by a movement transverse to their respective main plane 16a, 16b and can be moved in the direction of their respective main plane 16a, 16b in order to open the door 10. In the illustrated embodiment, the movement of the leaves 14a, 14b takes place horizontally in front of or behind the respective other leaf 14a, 14b.

[0108] The first wing 14a has a first handle 18a, and the second wing 14b has a second handle 18b. Preferably, the first wing 14a is in its closed position when the first handle 18a points downwards, and the second wing 14b is in its closed position when the second handle 18b points downwards. The first handle 18a is coupled to a first drive rod assembly 20a, and the second handle 18b is coupled to a second drive rod assembly 20b.

[0109] The first drive rod assembly 20a is connected to a first locking element 22a. The second drive rod assembly 20b is connected to a second locking element 22b. The drive rod assemblies 20a, 20b and the locking elements 22a, 22b generally form a fitting assembly 24. The fitting assembly 24 from Fig. 1a is shown enlarged in Fig. 1e.

[0110] Roto Frank Window and Door Technology GmbH SP14039PCT - 14 - 01.08.2025

[0111] Figures 1a and 1le show that the first locking element 22a is in the form of a locking pin and the second locking element 22b is in the form of a locking piece. The first locking element 22a is positively engaged with the second locking element 22b.

[0112] Fig. 1b shows the door 10 with the first leaf 14a in the sliding position. The first handle 18a preferably points upwards. The two leaves 14a, 14b are no longer positively locked to each other at the central break 26. As can be seen from Fig. 15, which shows the hardware arrangement 24, the locking bolt (first locking element 22a) has a mushroom head 28 that no longer engages a Q-shaped groove 30 in the strike plate (second locking element 22b). The vertical movement (here upwards) of the first drive rod arrangement 20a causes a vertical movement (here upwards) of the first locking element 22a.

[0113] Fig. 1c shows the door 10 with the second leaf 14b in the sliding position. As can be seen in Fig. 1g, which shows the hardware arrangement 24, the first locking element 22a with its mushroom head 28 no longer engages the Q-shaped groove 30 of the second locking element 22b. The vertical movement (here upwards) of the second drive rod arrangement 20b causes a vertical movement (here upwards) of the second locking element 22b.

[0114] Figures Id and 1h show the door 10 and the fitting assembly 24, respectively, whereby both drive rod assemblies 20a, 20b were moved vertically, here upwards, by pivoting the handles 18a, 18b. This moved both locking elements 22a, 22b vertically, here upwards. The two leaves 14a, 14b are no longer positively locked to each other in the area of ​​the central break 26.

[0115] Figures aa to bl show an example of a method according to the invention for opening a window or a door 10.

[0116] Fig. li shows the door 10 according to Fig. 1a with the fixed frame 12 and the leaves 14a, 14b in a longitudinal section. In the present case, the leaves 14a, 14b

[0117] Roto Frank Window and Door Technology GmbH SP14039PCT - 15 - 01.08.2025 optionally includes one seal 32a, 32b each. The first locking element 22a is positively engaged with the second locking element 22b.

[0118] Fig. 1j shows the door 10 according to Fig. 1b, where it can be seen from Fig. 1j that both the first locking element 22a is no longer positively engaged with the second locking element 22b and the first leaf 14a has moved perpendicular to its main plane 16a compared to Fig. 1. The first drive rod arrangement 20a is designed such that a pivoting movement of the first handle 18a during pivoting does not result in any movement of the first leaf 14a transverse to its main plane 16a, at least up to the first 45°, in particular at least up to the first 60°, preferably at least up to the first 90°. This allows the positive engagement of the first locking element 22a with the second locking element 22b to be reliably released by a purely vertical movement before the first leaf 14a moves transversely to its main plane 16a.

[0119] Fig. 1k shows the door 10 according to Fig. 1c, where it can be seen from Fig. 1k that the second locking element 22b is no longer positively engaged with the first locking element 22a, and that the second leaf 14b has moved perpendicular to its main plane 16b compared to Fig. 1. The second drive rod assembly 20b is designed such that a pivoting movement of the second handle 18b during pivoting does not result in any movement of the second leaf 14b transversely to its main plane 16b, at least up to the first 45°, in particular at least up to the first 60°, preferably at least up to the first 90°. This allows the positive engagement of the second locking element 22b with the first locking element 22a to be reliably released by a purely vertical movement before the second leaf 14b moves transversely to its main plane 16b.

[0120] Fig. II shows the door 10 according to Fig. Id. From Fig. II it can be seen that the leaves 14a, 14b were moved transversely, in particular perpendicularly, to their respective main plane 16a, 16b by the actuation of the handles 18a, 18b.

[0121] Roto Frank Window and Door Technology GmbH SP14039PCT - 16 - 01.08.2025

[0122] Fig. 1 shows the second locking element 22b described above on a guide element 34. The second locking element 22b is movable, here vertically, by a cam guide 36 on the guide element 34, and is thus securely secured. The guide element 34 is attached to the second wing 14b. Preferably, the guide element 34 is movable, here horizontally, by a further cam guide 38, to allow for tolerance compensation.

[0123] Fig. In shows the arrangement of the second locking element 22b and the guide element 34 according to Fig. Im, wherein the second locking element 22b, limited by the cam guide 36 and the further cam guide 38, is positioned maximally opposite to the position according to Fig. Im. A combined view of Figs. Im and In shows that the second locking element 22b is attached to the second wing 14b (see Fig. 1b) so that it can be moved horizontally and vertically to a limited extent.

[0124] Fig. 10 shows a sectional view of the second locking element 22b. It can be seen from Fig. 10 that the second locking element 22b has insertion ramps 40 at at least one end. Preferably, the second locking element 22b has insertion ramps 40, 42 at both ends. This facilitates the insertion of the first locking element 22a into the second locking element 22b (see Fig. 11).

[0125] Figures 1p, Iq, Ir and 1s show a variant of the arrangement consisting of a second locking element 22b and a guide element 34 according to Figures 1 to 10. Figures 11 to 11 show that the second locking element 22b is connected to the guide element 34 in a limited manner via both a vertical cam guide 36 and a further horizontal cam guide 38.

[0126] Fig. 2a shows a fitting arrangement 24 with a first locking element 22a and a second locking element 22b for mounting on a door 10 (see Fig. 2e). A first drive rod arrangement 20a (see Fig. 2e) is provided for actuating a sliding unit 44. The sliding unit 44 has a slide 46 which is movable transversely, in particular vertically, to the main plane 16a of the first leaf 14a (see Fig. 2e). The first drive rod arrangement 20a (see Fig.

[0127] Roto Frank Window and Door Technology GmbH SP14039PCT - 17 - 01.08.2025

[0128] 2e) has a first bolt 48a which is guided in a first cam 50a of the slide 46. The first cam 50a is formed at least partially obliquely to the longitudinal axis 52a of the first connecting rod assembly 20a (see Fig. 2e) in the area of ​​the first bolt 48a. A vertical movement of the first connecting rod assembly 20a (see Fig. 2e) in the area of ​​the first bolt 48a thus leads to a movement, preferably horizontal, of the slide 46 and of the first closing element 22a arranged or formed on the slide 46 transversely to the main plane 16a of the first wing 14a (see Fig. 2e).

[0129] Fig. 2b shows the fitting arrangement 24 from Fig. 2a, with the first bolt 48a moved vertically, here upwards. The first locking element 22a is in the sliding position. The corresponding position of the door 10 is shown in Fig. 2f.

[0130] Fig. 2c shows the fitting arrangement 24 according to Fig. 2a, with the second locking element 22b now in the sliding position. Fig. 2c shows that the first locking element 22a is designed in the form of a locking bolt with a mushroom head 28. The second locking element 22b is designed in the form of a strike plate with an i-shaped recess 54 for the rear grip of the mushroom head 28. The second locking element 22b is coupled to a second drive rod arrangement 20b via a second cam 50b. In this case, the second locking element 22b has a second bolt 48b, which is guided in the second cam 50b. Alternatively, the second locking element 22b could have the second cam 50b. A vertical movement of the second drive rod arrangement 20b, here upwards, pulls the cam 50b upwards and thereby the second locking element 22b, here horizontally, out of the rear grip of the mushroom head 28.The movement of the second locking element 22b preferably takes place parallel to the main plane 16b of the second wing 14b (see Fig. 2g) of the door 10.

[0131] Fig. 2d shows the fitting arrangement 24 with both locking elements 22a, 22b in the sliding position, corresponding to the two leaves 14a, 14b of the door 10 (see

[0132] Fig. 2h).

[0133] Roto Frank Window and Door Technology GmbH SP14039PCT - 18 - 01.08.2025

[0134] As previously explained, Figures 2e to 2h show the positions of the leaves 14a and 14b of the door 10 in the closed and sliding positions, respectively. A comparison of Figures 2e and 2f shows that the first leaf 14a is moved from the closed position to the sliding position a distance Z=XY transversely, and in particular perpendicularly, to its main plane 16a. Z is preferably between 3 mm and 20 mm, more preferably between 4 mm and 14 mm, and most preferably between 6 mm and 10 mm. The first leaf 14a can have a first carriage (not shown) coupled to the first drive rod assembly 20a on the underside of the first leaf 14a and / or a first slider (not shown) coupled to the first drive rod assembly 20a on the top side of the first leaf 14a to generate the movement over the distance Z transversely to the main plane 16a of the first leaf 14a.The movement of the first closing element 22a preferably takes place in the opposite direction to the direction of movement of the first wing 14a, in particular over the distance Z, preferably minus an immersion depth of the first closing element 22a into the second closing element 22b.

[0135] A comparison of Figures 2e and 2g shows that when moving from the closed position to the sliding position, the second wing 14b is also moved transversely, and in particular perpendicularly, to its main plane 16b. Preferably, this movement also occurs over the distance Z=XY. For this movement, a second carriage (not shown) can be located on the underside of the second wing 14b and / or a second slider (not shown) can be located on the upper side of the second wing 14b. The second carriage or the second slider can be coupled to the second connecting rod assembly 20b.

[0136] Fig. 3a shows a further embodiment of a fitting arrangement 24 with a hook-shaped first locking element 22a and a hook-shaped second locking element 22b. The hook-shaped first locking element 22a is connected to a first drive rod arrangement 20a via a first deflected connector 56a. The hook-shaped second locking element 22b is connected to a second drive rod arrangement 20b via a second deflected connector 56b.

[0137] Roto Frank Window and Door Technology GmbH SP14039PCT - 19 - 01.08.2025

[0138] Fig. 3b shows the fitting arrangement 24 from Fig. 3a, in which the first drive rod arrangement 20a was moved in the direction of its longitudinal axis 52a, here vertically, in particular upwards. The first locking element 22a was moved accordingly and thus disengaged from the positive locking (rear grip) with the second locking element 22b.

[0139] Fig. 3c shows the fitting arrangement 24 from Fig. 3a, in which the second drive rod arrangement 20b was moved in the direction of its longitudinal axis 52b, here vertically, in particular upwards. The second locking element 22b was moved accordingly and thus disengaged from the positive locking (rear grip) with the first locking element 22a.

[0140] Fig. 3d shows the fitting arrangement 24 from Fig. 3a, but with both locking elements 22a, 22b in the sliding position. A combined view of Figs. 3a to 3d shows that the locking elements 22a, 22b are supported against a retaining element 58 in the closed position. The retaining element 58 is attached to the door 10 (not shown), in particular to one of the leaves 14a, 14b (not shown). The retaining element 58 can be L-shaped or – as shown here – U-shaped. The retaining element 58 provides tolerance-compensating support for the locking elements 22a, 22b.

[0141] Fig. 3d further shows that the first locking element 22a is attached to the first drive rod assembly 20a, either directly or indirectly, via a first adjusting mechanism 60a. In this case, the first adjusting mechanism has a screw 64 guided in an elongated hole 62. The first adjusting mechanism 60a is provided to compensate for tolerances and serves to adjustably fix the distance of the first locking element 22a from the first drive rod assembly 20a. A second adjusting mechanism 60b (not fully visible in detail) may be provided to fix the distance of the second locking element 22b from the second drive rod assembly 20b. The first adjusting mechanism 60a may be a mirror image and / or identical to the first adjusting mechanism 60b. Alternatively or additionally, the first

[0142] Roto Frank Fenster- und Türtechnologie GmbH SP14039PCT - 20 - 01.08.2025 The deflected connectors 56a must be mirror images and / or identical to the second deflected connector 56b.

[0143] In general, the first connecting rod assembly 20a can be designed as a mirror image and / or identical to the second connecting rod assembly 20b. Alternatively or additionally, the first locking element 22a can be designed as a mirror image and / or identical to the second locking element 22b.

[0144] In an alternative embodiment of the connecting rod arrangements 20a, 20b (not shown), the locking elements 22a, 22b can be pivotable according to the dashed double arrows SI, S2. Preferably, the locking elements 22a, 22b are pivotable in a horizontal plane.

[0145] Fig. 4a shows another embodiment of a door 10 with a fitting arrangement 24 comprising a first locking element 22a and a second locking element 22b. The first locking element 22a is connected, either directly or indirectly, to a first drive rod arrangement 20a, and the second locking element 22b is connected to a second drive rod arrangement 20b. As can be seen in Fig. 4a, the first drive rod arrangement 20a is arranged at the end face of a first leaf mullion 66a of the first leaf 14a. The second drive rod arrangement 20b is arranged at the end face of a second leaf mullion 66b of the second leaf 14b. In the closed position of the leaves 14a, 14b shown in Fig. 4a, the two leaf mullions 66a, 66b overlap by more than 70% in the viewing direction perpendicular to the main plane 16a of the first leaf 14a (see Fig. 2e).

[0146] Fig. 4b shows the door 10 with the first locking element 22a in the sliding position. The first locking element 22a has a first projection 68a and, in particular, a first recess 70a. The second locking element 22b has a second recess 70b and, in particular, a second projection 68b. The first projection 68a is inserted into the first recess 70b in the closed position of both locking elements 22a, 22b (see Fig. 4a) and is no longer inserted when at least one of the two locking elements 22a, 22b is in the sliding position (see Figs. 4b, 4c and 4d).

[0147] Roto Frank Window and Door Technology GmbH SP14039PCT - 21 - 01.08.2025

[0148] As can be seen from Fig. 4c, the first projection 68a of the door 10 is preferably bolt-shaped to facilitate its manufacture. The second recess 70b is preferably designed as a through-hole. Particularly preferably, the second recess 70b is designed as an elongated slot or an elongated groove to compensate for tolerances between the leaves 14a, 14b.

[0149] Fig. 4d shows the door 10 with both leaves 14a, 14b in the sliding position. Fig. 4d shows that the locking elements 22a, 22b, deflected connectors 56a, 56b and / or drive rod assemblies 20a, 20b can be identical in order to simplify the manufacture and assembly of the door 10.

[0150] In summary, considering all figures of the drawing, the invention relates to a window or door 10 with two sashes 14a, 14b, which are slidable in their sliding position in the direction of their main planes 16a, 16b. Only in the closed position of both sashes 14a, 14b are they held together in the area of ​​a central break 26 of the door 10 by means of a fitting arrangement 24. A drive rod arrangement 20a, 20b is arranged on each sash 14a, 14b, to which a locking element 22a, 22b is movably connected. In the closed position of both sashes 14a, 14b, the locking elements 22a, 22b preferably engage in such a way that the sashes 14a, 14b are immovable relative to each other at least transversely to their main planes 16a, 16b and thus, in particular, seal well against each other.Preferably, the locking elements 22a, 22b interlock in the closed position of both leaves 14a, 14b such that the leaves 14a, 14b cannot be moved in the direction of their main plane 16a, 16b, in order to provide improved burglary protection. The locking elements 22a, 22b can each be connected to a drive rod arrangement 20a, 20b via a deflected connector 56a, 56b. At least one locking element 22a, 22b is movable and / or pivotable in the direction of the main plane 16a, 16b of the respective leaf 14a, 14b. This allows the leaf jambs 66a, 66b to preferably overlap at least to a large extent in the closed position of both leaves 14a, 14b.

[0151] Roto Frank Window and Door Technology GmbH SP14039PCT - 22 - 01.08.2025 has a very appealing visual appearance. The invention further relates to a method for opening the window or door 10.

[0152] Roto Frank Window and Door Technology GmbH SP14039PCT - 23 - 01.08.2025

[0153] Reference symbol list

[0154] 10 Door 30 48a first bolt

[0155] 12 fixed frame 48b second bolt

[0156] 14a first wing 50a first backdrop

[0157] 14b second wing 50b second backdrop

[0158] 16a Main plane of the first flight 52a Longitudinal axis of the first flight 14a 35 Connecting rod arrangement 20a

[0159] 16b Main plane of the second wing 52b Longitudinal axis of the second wing 14b Connecting rod arrangement 20b

[0160] 18a first handle 54 U-shaped recess

[0161] 18b second handle 56a first deflected connector

[0162] 20a first connecting rod arrangement 4o 56b second deflected connection

[0163] 20b second connecting rod arrangement 58 retaining element

[0164] 22a first locking element 60a first adjustment mechanism

[0165] 22b second locking element 60b second adjustment mechanism

[0166] 24 Fitting arrangement 45 62 Slotted hole

[0167] 26 Center fracture 64 Screw

[0168] 28 Mushroom head 66a first wing spar

[0169] 30 Nut 66b second wing spar

[0170] 32a first seal 68a first lead

[0171] 32b second seal so 68b second projection

[0172] 34 Guide element 70a first recess

[0173] 36 Backstage tour 70b second recess

[0174] 38 further scenery guidance S1 panning movement of the first

[0175] 40 Lead-in chamfers of the locking element 22a

[0176] 42 Inlet ramps 55 S2 Swivel movement of the two-

[0177] 44 sliding unit ten locking element 22b

[0178] 46 sliders

[0179] Roto Frank Window and Door Technology GmbH SP14039PCT

Claims

- 24 - 01.08.2025 Patent claims 1. Window or door (10), wherein the window or door (10) has the following features: a) a fixed frame (12); b) a first sash (14a) which is movable from its closed position transversely to its main plane (16a) into its sliding position and, in the sliding position, is displaceable in the direction of its main plane (16a); c) a second sash (14b) which is movable from its closed position transversely to its main plane (16b) into its sliding position and, in the sliding position, is displaceable in the direction of its main plane (16b); d) wherein the sashes (14a, 14b) partially overlap in the direction of view perpendicular to the main plane (16a) of the first sash (14a) when both sashes (14a, 14b) are in their closed position; e) a first connecting rod arrangement (20a) on the first wing (14a), wherein the first wing (14a) can be moved from its closed position to its sliding position independently of the second wing (20b) by actuating the first connecting rod arrangement (20a);f) a second connecting rod arrangement (20b) on the second wing (14b), wherein the second wing (14b) can be moved from its closed position to its sliding position independently of the first wing (14a) by actuating the second connecting rod arrangement (20b); g) a first locking element (22a) on the first sash (14a), which faces the second sash (14b) in the closed position of both sashes (14a, 14b) and engages behind a second locking element (22b) in the closed position of both sashes (14a, 14b), wherein the first locking element (22a) is coupled to the first drive rod assembly (20a) and is movable, h) the second locking element (22b) on the second sash (14b), which faces the first sash (14a) in the closed position of both sashes (14a, 14b) and engages behind the first locking element (22a) in the closed position of both sashes (14a, 14b), wherein the second locking element (22b) is coupled to the second drive rod assembly (20b) and is movable; Roto Frank Window and Door Technology GmbH SP14039PCT - 25 - 01.08.2025 characterized in that the window or door (10) has the following feature(s): i) the first locking element (22a) is movable by actuating the first drive rod assembly (20a) i. parallel to the main plane (16a) of the first sash (14a); and / or ii. pivotable so that the first locking element (22a) does not engage behind the second locking element (22b) in the sliding position of the first sash (14a); and / or j) the second locking element (22b) is movable by actuating the second drive rod assembly (20b) i. parallel to the main plane (16b) of the second sash (14b); and / or ii. pivotable so that the second locking element (22b) does not engage behind the first locking element (22a) in the sliding position of the second sash (14b).

2. Window or door according to claim 1, wherein the first closing element (22a) is movable horizontally and / or vertically by means of the first drive rod arrangement (20a) and / or the second closing element (22b) is movable horizontally and / or vertically by means of the second drive rod arrangement (20b).

3. Window or door according to claim 2, wherein the first closing element (22a) and the second closing element (22b) are exclusively vertically movable.

4. Window or door according to one of the preceding claims, wherein the first locking element (22a) is moved in one direction by means of the first drive rod arrangement (20a) when the first sash (14a) is moved from its closed position to its sliding position; and the second locking element (22b) is moved in parallel by means of the second drive rod arrangement (20b). Roto Frank Window and Door Technology GmbH SP14039PCT - 26 - 01.08.2025 is moved in the same or opposite direction when the second wing (14b) is moved from its closed position to its sliding position.

5. Window or door according to one of the preceding claims, wherein the first sash (14a) has a first sash mullion (66a) and the second sash (14b) has a second sash mullion (66b), wherein the two sash mullions (66a, 66b) overlap by more than 40% in the closed position of both sashes (14a, 14b) in the direction of view perpendicular to the main plane (16a) of the first sash (14a).

6. Window or door according to one of the preceding claims, wherein the first locking element (22a) is designed in the form of a locking bolt and the second locking element (22b) is designed in the form of a locking piece for the section-wise reception of the locking bolt in the closed position of both leaves (14a, 14b).

7. Window or door according to claim 6, with a guide element (34) arranged on the second sash (14b) for guiding the movement of the locking piece when the second drive rod arrangement (20b) is actuated.

8. Window or door according to claim 7, wherein the locking piece is arranged on the guide element (34) by means of a cam guide (36).

9. Window or door according to claim 6 or 7, wherein the guide element (34) and / or the locking piece is / are attached to the second sash (14b) in a limited horizontally movable manner to compensate for tolerances.

10. Window or door according to one of claims 1 to 5, wherein the first closing element (22a) is designed in a hook shape and / or the second closing element (22b) is designed in a hook shape. Roto Frank Window and Door Technology GmbH SP14039PCT - 27 - 01.08.2025 11. Window or door according to one of the preceding claims, wherein the first closing element (22a) has a projection (68a) and the second closing element (22b) has a recess (70b), wherein the projection (68a) is immersed in the recess (70b) in the closed position of both leaves (14a, 14b) and is not immersed in the recess (70b) in the sliding position of one leaf (14a, 14b).

12. Window or door according to claim 11, wherein the recess (70b) for tolerance compensation is designed in the form of an elongated groove or a slot.

13. Window or door according to any of the preceding claims, wherein i. the first drive rod assembly (20a) extends along the end face of the first sash (14a), the window or door (10) having a first deflected connector (56a) that connects the first drive rod assembly (20a) directly or indirectly to the first locking element (22a); and / or ii. the second drive rod assembly (20b) extends along the end face of the second sash (14b), the window or door (10) having a second deflected connector (56b) that connects the second drive rod assembly (20b) directly or indirectly to the second locking element (22b).

14. Window or door according to one of the preceding claims, wherein i. the first sash (14a) has a first handle (18a) coupled to the first drive rod assembly (20a), in particular wherein the first sash (14a) is not yet moved transversely to its main plane (16a) during the first 30% of the maximum handle movement when moving from the closed position to the sliding position; and / or Roto Frank Window and Door Technology GmbH SP14039PCT - 28 - 01.08.2025 ii. the second wing (14b) has a second handle (18b) coupled to the second connecting rod arrangement (20b), in particular wherein the second wing (14b) is not yet moved transversely to its main plane (16b) during the movement from the closed position to the sliding position during the first 30% of the maximum handle movement.

15. Method for opening a window or door (10) according to one of the preceding claims, comprising the method steps: A) Moving the first drive rod assembly (20a) to the first to move the wing (14a) from its closed position to the sliding position, whereby the rear grip of the first locking element (22a) on the second locking element (22b) is released; and / or B) Moving the second connecting rod assembly (20b) to move the second wing (14b) from its closed position to the sliding position, releasing the rear grip of the second locking element (22b) on the first locking element (22a). Roto Frank Window and Door Technology GmbH SP14039PCT

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