Base frame module for roof window

Abstract

The invention relates to a base frame module for roof windows, comprising: a longitudinal leg and a transverse leg, which are arranged substantially at right angles to each other and are connected substantially at right angles to each other at one end region; wherein the longitudinal leg and the transverse leg each have a projecting section and a recessed section at the connected end regions; wherein the recessed section of the longitudinal leg abuts an end face of a lateral region of the projecting section of the transverse leg; wherein the recessed section of the transverse leg abuts an end face of the projecting section of the longitudinal leg and wherein an end face of the projecting section of the longitudinal leg projects laterally from the recessed section of the transverse leg.

Description

[0001] The invention relates to a base frame module for roof windows.

[0002] Conventional roof window frames often consist of identical frame sections that are butted together with a 45° miter cut and fastened together with punched or screwed connections. However, such frames can subject the fasteners to unfavorable shear stress, for example due to snow loads on the roof window. Furthermore, due to thermal and static influences, frame sections with different cross-sections cannot be fastened together, or can only be fastened together with considerable effort. Furthermore, with conventional frames, it is difficult to drain condensation that forms on the inside of the frame sections, as the connected frame sections form a closed frame shell, and joint areas must be well sealed.

[0003] It is therefore an object of the present invention to provide a base frame module for roof windows with a frame which enables frame parts of different cross-sections and / or advantageous load bearing and / or advantageous drainage of condensate.

[0004] This object is achieved by the subject matter of the independent claim. Advantageous embodiments are defined in the subclaims.

[0005] The invention relates to a base frame module for roof windows, comprising: a longitudinal leg and a transverse leg, which are arranged substantially at right angles to one another and are connected to one another substantially at right angles at one end region each; wherein the longitudinal leg and the transverse leg each have a projecting section and a recessed section at the connected end regions; wherein the recessed section of the longitudinal leg rests at the end face against a lateral region of the projecting section of the transverse leg; and wherein the recessed section of the transverse leg rests at the end face against a lateral region of the projecting section of the longitudinal leg.

[0006] Such a base frame module features an advantageous corner connection of its frame legs, which particularly improves the absorption of forces acting in the transverse, longitudinal, and / or vertical directions at the respective end regions of the transverse leg or the longitudinal leg. Furthermore, the corner connection allows longitudinal legs and transverse legs of different widths or face widths to be easily connected to one another, which is not possible, especially with a miter joint.

[0007] The "longitudinal direction" refers to the direction of extension of the longitudinal leg, the "transverse direction" refers to the direction of extension of the transverse leg, essentially perpendicular to the longitudinal direction, and the "height direction" refers to a direction orthogonal to the longitudinal and transverse directions. The height direction can thus be orthogonal to the frame plane or the window plane.

[0008] The base frame module preferably further comprises a further longitudinal leg and a further transverse leg, wherein the two longitudinal legs and the two transverse legs are connected to one another at end regions and form a frame for a window sash. A base frame module can have four frame legs, which can be connected to one another essentially in a rectangular shape, wherein preferably two essentially parallel longitudinal legs and transverse legs are provided in each case. One or two of the two longitudinal legs can be designed as connecting legs, which can be connected to a connecting leg of another base frame module. The base frame module is preferably designed to be mounted on a roof structure, for example one or more beams and / or girders and / or concrete curbs.

[0009] The base frame module can have four load ribs, each arranged at a corner region of the base frame module and projecting beyond the frame in a longitudinal direction of the longitudinal legs. A load rib preferably has an elongated and flat shape and is designed to bridge a gap between the base frame module and a roof structure and to enable mounting of the corresponding base frame module on the roof structure. The load rib can be formed from a sheet metal.

[0010] Preferably, in the mounting position of the base frame module on a roof structure, the projecting portion of the longitudinal leg is arranged above the projecting portion of the transverse leg.

[0011] This advantageously allows a drainage channel (described in more detail later) for draining condensate to be formed in the longitudinal direction of the base frame module. This drainage channel extends over the connecting area between the longitudinal leg and the transverse leg, in particular to the end of the longitudinal leg. The drainage channel can be formed in particular in a vertically upper region of the longitudinal leg and preferably in the interior of the longitudinal leg.

[0012] When mounted on a roof structure, the longitudinal leg is preferably aligned in the direction from the ridge to the eaves of the roof, wherein the longitudinal leg preferably has a gradient in order, for example, to guide water in a drainage channel described in more detail later from a ridge-side area of ​​the base frame module to an eaves-side area of ​​the base frame module, and to drain it via the drainage channel from an eaves-side end area of ​​the base frame module or the longitudinal leg.

[0013] Preferably, an underside of the projecting portion of the longitudinal leg rests on and / or against an upper side of the projecting portion of the transverse leg.

[0014] This allows for improved force absorption in the vertical direction and also simplifies the assembly of the longitudinal leg and the transverse leg.

[0015] The longitudinal leg and the transverse leg can each have a substantially stepped and / or stepped and / or L-shaped end region. In particular, a force acting downward in the vertical direction can be advantageously transmitted to the longitudinal leg by the contact of the underside of the projecting section of the longitudinal leg with the upper side of the projecting section of the transverse leg and / or diverted via the transverse leg. In particular, optionally provided screw or rivet connections between the longitudinal leg and the transverse leg are thus subjected to lower shear stress. Thus, the number and / or dimensioning of such screw or rivet connections can be reduced. Furthermore, less effort is required for assembling the base frame module.

[0016] In particular, the end regions of the longitudinal leg and the transverse leg can form a positive connection in a direction in the extension directions of the longitudinal leg and the transverse leg towards the corner connection and / or in the height direction.

[0017] The positive locking reliably prevents relative displacement of the longitudinal leg and the transverse leg, as well as advantageously absorbing and / or dissipating forces acting on the corner connection. For additional fixation of the longitudinal leg to the transverse leg, one or more screw or rivet connections can be provided, with the one or more screw or rivet connections preferably engaging laterally in the projecting section and at the front end in the longitudinal leg or the transverse leg.

[0018] Preferably, an end face of the projecting portion of the longitudinal leg projects laterally from the recessed portion of the transverse leg.

[0019] This makes it possible to create a particularly advantageous drainage channel for draining away condensate, as this channel projects beyond the cross leg and thus the cross leg does not come into contact with the drained condensate.

[0020] Preferably, the longitudinal leg and the transverse leg have different visible widths, in particular in the vertical direction from below and / or from the direction orthogonal to the glass pane or the window glass of a window sash assigned to the base frame module. Preferably, the longitudinal leg has a smaller visible width than the transverse leg.

[0021] This allows for improved light penetration through the roof window, especially when multiple base frame modules are arranged side by side, since the longitudinal or connecting legs of adjacent base frame modules have a reduced width and thus less shading. In other words, adjacent base frame modules can be arranged closer together to achieve less shading.

[0022] Preferably, the longitudinal leg and / or the transverse leg each has a drainage channel on a respective inner side facing the interior of the frame.

[0023] This serves in particular to advantageously drain away condensate which can form in a substantially sealed space between the base frame module and the window sash or in the window rebate when closed. The drainage channel can be formed by a section of the longitudinal leg and / or the transverse leg which projects into the interior of the base frame module in a plane parallel to the frame plane or window plane. The drainage channel can be in the form of a flange on the inside of the base frame module, in particular at least partially circumferential. The substantially sealed space can be formed by an inner seal for sealing towards the inside of the roof window and an outer seal for sealing towards the outside of the roof window.The inner seal can be formed as part of the drainage channel and, in particular, can be arranged at least partially circumferentially on a free end region of the section of the longitudinal leg and / or the transverse leg that projects into the interior of the base frame module. When the window sash is closed, the inner seal rests against a sealing end face of the window sash that projects vertically towards the base frame module. Condensation can form, in particular, on a vertically upper section of the inner side surfaces of the longitudinal leg and / or the transverse leg, since this section is in contact with the cooler ambient air on the outside and is cooled by it. The condensation can flow or drip down the inner side surfaces of the longitudinal leg and / or the transverse leg and be collected in the drainage channel below and / or be passed on through this to the drainage channel.

[0024] The outer seal can in particular have an outer sealing element which is designed to be flexible, in particular made of rubber, and can extend continuously over essentially the entire length of the longitudinal leg and / or transverse leg. The inner seal can in particular have an inner sealing element which is designed to be flexible, in particular made of rubber, and can extend continuously over essentially the entire length of the drainage channel. The inner seal can be arranged or protrude oriented upwards in the vertical direction and seal against the sealing end face of the window sash, which is oriented downwards in the vertical direction, when the window sash is closed.

[0025] Preferably, the longitudinal leg has a drainage channel in the interior, which is connected to the drainage channel via a through opening and is designed to drain (condensation) water via the projecting section of the longitudinal leg on the eaves side.

[0026] Such a drainage channel and such a through-opening advantageously allow condensate to be drained from the essentially sealed space between the base frame module and the window sash, in order to remove condensate from this space or to reduce the humidity in this space. This, in particular, prevents the formation of mold and / or rot.

[0027] The drainage channel is preferably formed at least at one eaves-side end region of the longitudinal leg and is connected to the drainage channel via the through-opening. Due to the preferred arrangement of the longitudinal leg on the roof structure such that it has a gradient, condensate is advantageously drained away from the base frame module through both the drainage channel and the drainage channel on the eaves side. The drainage channel can also be provided essentially continuously in the longitudinal leg, particularly if the longitudinal leg is essentially hollow.

[0028] The through-opening is preferably located at an eaves-side inner end region of the longitudinal leg, allowing condensate collected there to be drained more effectively. Further preferably, the through-opening is aligned with a drainage channel of the eaves-side transverse leg, allowing condensate collected there to be drained via the drainage channel of the longitudinal leg.

[0029] Advantageously, the longitudinal leg and / or the transverse leg have a profile construction, preferably an integral one. This enables, in particular, cost-efficient production.

[0030] A frame leg, in particular the longitudinal leg and / or transverse leg, preferably consists essentially of metal, in particular of aluminum, and / or a metal alloy. The frame leg is preferably produced by extrusion. This allows, in particular, cost-effective and / or dimensionally stable frame legs to be produced for a base frame module. Alternatively, the frame leg can be produced by machining and / or forming processes. The frame leg can also be formed essentially of plastic and produced by extrusion or injection molding. The frame leg is preferably hollow at least in some regions in order to reduce material and / or weight.

[0031] The frame leg can be formed in one piece. Alternatively, the frame leg can be formed in multiple parts, for example in two, three, or four parts, and / or be composed of two or more, for example, two, three, or four, parts, in particular profile parts. A multi-part design is particularly advantageous, wherein a connecting profile with an insulating element is arranged between an upper, outward-facing profile and a lower, inward-facing profile. This design offers particularly advantageous thermal insulation. In addition to the positive fit, the frame legs can be connected to one another, preferably by screwing, riveting, gluing, welding, and / or other joining methods, in order to form a base frame module.

[0032] In the following, individual embodiments for achieving the object are described by way of example with reference to the figures. In some cases, the individual embodiments described have features that are not absolutely necessary to carry out the claimed subject matter, but which provide desired properties in certain applications. Thus, embodiments that do not have all the features of the embodiments described below are to be regarded as falling within the scope of the described technical teaching. Furthermore, to avoid unnecessary repetition, certain features are only mentioned in relation to individual embodiments described below. It is pointed out that the individual embodiments should therefore not only be considered in isolation, but also in conjunction with one another.Based on this overview, those skilled in the art will recognize that individual embodiments may also be modified by incorporating one or more features of other embodiments. It is noted that a systematic combination of the individual embodiments with one or more features described with reference to other embodiments may be desirable and useful and should therefore be considered and considered to be encompassed by the description. Short description of the drawings

[0033] Figure 1 shows an exemplary window frame system for roof windows; Figure 2 shows exemplary base frame modules of a window frame system; Figure 3 shows two exemplary base frame modules arranged side by side with associated window sashes in a front side view; Figure 4 shows a perspective view of the exemplary base frame modules of the Figure 3; Figure 5a shows an exemplary connecting leg of two base frame modules, which form a guide structure; Figure 5b shows a front side view of the Figure 5a shown connecting legs; Figure 6 shows a sectional view of an exemplary base frame module with two frame legs designed as connecting legs and an associated window sash; Figure 7 shows an exemplary corner connection of frame legs of a base frame module; Figure 8a shows an exemplary connecting leg of the in Figure 7 shown corner connection; Figure 8b shows an example of a cross leg of the Figure 7 shown corner connection; Figure 9 shows another view of the Figure 7 shown exemplary corner connection; Figures 10a-d show an exemplary method for connecting two base frame modules in a predetermined alignment state to each other. Detailed description of the drawings

[0034] Figure 1 shows an exemplary window frame system 1 for roof windows with a plurality of base frame modules 2 arranged side by side and each associated window sash 4. In the example shown, three base frame modules 2, namely a first base frame module 2a, a second base frame module 2b, and a third base frame module 2c, are mounted side by side on a roof structure (not shown). An exemplary window frame system 1 can also comprise two, four, five, six, seven, or more base frame modules 2, wherein the base frame modules 2 are preferably arranged side by side in one direction.

[0035] Each of the base frame modules 2 forms a frame or clamping frame for one or more window sashes 4. Preferably, each of the window sashes 4 has a window pane or a window glass or a glass pane 6, wherein the window glass or the glass pane 6, in the closed state, is aligned parallel to a plane spanned by the window frame system 1 and / or its base frame modules 2.

[0036] As in Figure 1 As shown, the base frame modules 2 can be mounted on the roof structure via load bars 16 and mounting feet 17 arranged thereon. Preferably, each of the base frame modules 2 comprises a load bar 16 at each frame corner. The load bars 16 are particularly designed to bridge a gap between the base frame module 2 and the roof structure, such as one or more beams and / or girders.

[0037] In the example shown, the first base frame module 2a is connected to the roof structure by a mounting foot 17 on each of its load-bearing supports 16. The first base frame module 2a can, in particular, be mounted on the roof structure in front of the other base frame modules 2 of a window frame system 1.

[0038] The second base frame module 2b is preferably designed to be connected, with its load bars 16 facing the first base frame module 2a, to the load bars 16 of the first base frame module 2a facing the second base frame module 2a, and thus to be connected to the roof structure via mounting feet 17 of the first base frame module 2a. The connection of two load bars 16 can be achieved by means of a fixing element 38, for example, a screw.

[0039] On the load blades 16 of the second base frame module 2b, which are arranged on the side facing away from the first base frame module 2a, a mounting foot 17 is preferably provided, via which the second base frame module 2b can be mounted on the roof structure.

[0040] The third base frame module 2c preferably has a mounting foot 17 only on the load blades 16 facing away from the second base frame module 2b, wherein the load blades 16 facing the second base frame module 2b are connected to load blades 16 of the second base frame module 2b and can be mounted on the roof structure via these.

[0041] In other words, two adjacent and / or substantially adjacent load bars 16 of two adjacent base frame modules 2 can be connected to each other and to the roof structure by means of a single mounting foot 17. This reduces the assembly effort and / or the number of parts used.

[0042] A load bar 16 can have a substantially elongated and flat shape. A load bar 16 can, for example, consist essentially of metal, in particular steel. The load bar 16 can be made of sheet metal. In particular, the load bar 16 can be designed and oriented in the mounted position such that it reliably transfers forces acting on the window frame system 1 to the roof structure. Preferably, a load bar 16 comprises one or more through-holes, which enable two load bars 16 to be connected and / or a load bar 16 to be connected to a mounting foot 17. A load bar 16 can have a bevel on an upper and / or lower edge, in particular to increase stiffening and / or dimensional stability. The bevel can, in particular, have an angled section which extends transversely to the direction of extension of the load bar 16.For example, the load blade 16 can have a substantially L-shaped cross-section in the region of the bend.

[0043] A mounting foot 17 can be formed from metal and, in cross-section transverse to the direction of extension of the associated load bar 16, can be substantially L-shaped or inverted T-shaped. A mounting foot 17 can have a vertical section extending substantially parallel to the surface of the associated load bar 16 and a horizontal section extending substantially parallel to the surface of the roof structure, in particular in the horizontal plane. The vertical section can have a through-hole, and the associated load bar 16 can have a corresponding through-hole, wherein the mounting foot 17 can be connected to the load bar 16 by means of a screw guided through these through-holes.Before final assembly, the mounting foot 17 can be provisionally connected to the associated load bar 16 by means of the screw. In the provisional connection state, the mounting foot 17 can be pivoted relative to the associated load bar about the screw axis in order to align the horizontal section with the roof structure. The horizontal section can have one or more through holes for mounting the mounting foot 17 to the roof structure using screws.

[0044] Figure 2shows exemplary base frame modules 2 of a window frame system 1, wherein the base frame modules 2 are arranged next to one another. Preferably, each of the base frame modules 2 forms a substantially rectangular frame with four interconnected frame legs 8. Preferably, two frame legs 8 are designed as longitudinal legs 10 aligned substantially parallel to one another, and two frame legs 8 are designed as transverse legs 14 aligned substantially parallel to one another. The longitudinal legs 10 are aligned substantially in a longitudinal direction L and the transverse legs 12 in a transverse direction Q, wherein transverse direction Q means an arrangement direction of the base frame modules 2 and longitudinal direction L means a direction orthogonal to the transverse direction Q.

[0045] The respective longitudinal legs 10 of two base frame modules 2, which are arranged adjacent to one another and / or substantially directly next to one another in the window frame system 1, are preferably designed as connecting legs 12, as described in detail below.

[0046] The longitudinal legs 10 of the base frame modules 2, which are not adjacent and / or not arranged substantially directly next to a longitudinal leg of another base frame module 2, can be designed substantially identically or differently to the connecting legs 12.

[0047] As in Figure 2As shown, the load blades 16 protrude outward from the frame legs 8 in the longitudinal direction L. The load blades 16 are preferably connected directly to the frame legs 8, preferably to the longitudinal legs 10, with one load blade 16 being arranged at each end region of the longitudinal leg 10. However, the load blades 16 can also be arranged on the transverse legs 14. The load blades 16 can be screwed to the respective frame legs 8.

[0048] Figure 3 shows two exemplary base frame modules 2 arranged side by side with associated window sashes 4 in a front side view, wherein the base frame modules 2 are in a predetermined alignment state relative to one another. The predetermined alignment state and / or desired state can in particular be a substantially flat alignment of the base frame modules 2 without offset in the height direction H and the longitudinal direction L.

[0049] A first base frame module 2a and a second base frame module 2b each have a transverse leg 14 oriented in the transverse direction Q, which in the predetermined alignment state are preferably arranged substantially flush and / or in a straight line.

[0050] Also shown are window sashes 4 assigned to the first base frame module 2a and the base frame module 2b, which are configured to be displaced, in particular substantially translationally in a height direction H and / or pivoting relative to the assigned base frame module 2, wherein height direction H means a direction orthogonal to the frame plane or to the window plane of the base frame module 2.

[0051] In the alignment state shown, the first base frame module 2a and the second base frame module 2b are connected or coupled to each other by means of an exemplary guide structure 18. The guide structure 18 is formed by the respective connecting legs 12 of the first base frame module 2a and the second base frame module 2b, as will be explained below. Figure 4 described in detail.

[0052] The guide portion 24 may be formed integrally with the first connecting leg 12. The engagement portion 20 may be formed integrally with the connecting leg 12.

[0053] The base frame module 2 preferably has an outer sealing element 30 for sealing against the window sash 4 in a closed state. The outer sealing element 30 can be designed to be flexible, in particular made of rubber, and preferably extends essentially continuously over the entire length of the longitudinal leg 10 and / or the transverse leg 14. For example, the outer sealing element 30 consists of a rubber lip, which is arranged on an outer edge of the frame legs 8 directed upwards in the height direction H and, when the window sash 4 is closed, rests against it and / or is at least slightly deformed between the frame legs 8 and the window sash 4. The outer sealing element 30 is preferably designed to be essentially airtight.

[0054] The base frame modules 2 can further comprise one or more intermediate sealing elements 34, which are preferably arranged between the connecting legs 12 in a lower region of the base frame modules 2 in the vertical direction H. An intermediate sealing element 34 is provided in particular for sealing a gap between the first connecting leg 12 of the first base frame module 2a and the second connecting leg 12 of the second base frame module 2b. Preferably, an intermediate sealing element 34 is arranged on a side surface of the connecting leg 12 towards the other base frame module 2 and extends substantially over the entire length of the connecting leg 12. When the base frame modules 2 are connected, the intermediate sealing element 34 is preferably designed to be airtight and / or is provided for thermal insulation and / or as cladding.In the example shown, each of the connecting legs 12 has an intermediate sealing element 34 which are in contact with each other.

[0055] Figure 4 shows a perspective view of the exemplary base frame modules 2 from Figure 3 The connecting legs 12 of the first base frame module 2a and the second base frame module 2b form an advantageous guide structure 18. The guide structure 18 is formed by engaging portions of the connecting leg 12 of the first base frame module 2a and the connecting leg 12 of the second base frame module 2b.

[0056] The connecting leg 12 of the second base frame module 2b has an engagement section 20 with a bridging section protruding from the second connecting leg 12 in the longitudinal direction L. The connecting leg 12 of the first base frame module 2a has a guide section 24 with a receiving section for receiving at least part of the bridging section of the second base frame module 2b. The connecting legs 12 of the base frame modules 2 can thus be engaged with one another. As a result, a predetermined alignment state of the base frame modules 2 with respect to one another in the height direction H and / or in the transverse direction Q can preferably be achieved.

[0057] In the example shown, the bridging section of the engagement section 20 is designed as a gutter forming section. The gutter forming section forms a gutter that prevents rain and / or meltwater from penetrating from above the gutter into a space between the connecting legs 12 below the gutter. It is preferred that the longitudinal legs 10 and / or connecting legs 12, when mounted on the roof structure, have a gradient that runs from a ridge-side end to an eaves-side end of the longitudinal legs 10 and / or connecting legs 12. This allows water to be drained through the gutter to the eaves-side area of ​​a base frame module 2.

[0058] Preferably, the guide section 24 and / or the engagement section 22 extends substantially continuously from a ridge-side end region of the respective connecting leg 12 to an eaves-side end region of the respective connecting leg 12 when mounted on the roof structure. This is particularly advantageous for an engagement section 22 that has a bridging section designed as a water channel formation section, as this allows water to drain reliably over the entire length of the connecting leg 12. In the example shown, the guide section 24 is designed as a gutter receiving section that accommodates the engagement section 20 or the gutter formation section.

[0059] For improved engagement of the engagement section 20 in the guide section 24, the bridging section can have, preferably at a distal end region, a hooking projection 22 which can be hooked into the receiving section 24 and / or applied to at least one region of the receiving section 24. Advantageously, the hooking projection 22 engaged with the receiving section 24 is configured to substantially prevent a relative displacement of the first base frame module 2a and the second base frame module 2b in a transverse direction Q, in particular away from one another, and / or to guide or hold the base frame modules 2 in the predetermined alignment state and / or desired state in the vertical direction and / or transverse direction relative to one another during assembly.

[0060] The interlocking projection 22 can extend substantially over the entire extent of the bridging section and / or have a substantially triangular shape in cross-section transverse to the direction of extension, with a tip directed downwards in the height direction H. One side of the triangle can form a guided bevel, which, when connecting the base frame modules 2, engages with a guide bevel 26 of a receiving section (described below) or is guided by this guide bevel into a desired position.

[0061] A frame leg 8 can have an insulating element 36 for improved thermal insulation. Preferably, the insulating element 36 is provided substantially over the entire extent of the frame leg 8 and / or in a region between an upper part in the vertical direction H, which is in contact with the outside air, and a lower part of the frame leg 8, which is in contact with the inside air, in the vertical direction H. Figure 4 An exemplary insulating element 36 is shown, which is provided in the longitudinal leg 10 or connecting leg 12. The insulating element 36 can, in particular, comprise a material that has low thermal conductivity.

[0062] Figure 5a shows an exemplary connecting leg 12 of two base frame modules 2, which form a guide structure 18. The connecting legs 12 shown can in particular be connected to the two Figure 2shown first base frame modules 2a and 2b.

[0063] A frame leg 8, in particular a longitudinal leg 10 and / or a transverse leg 14, can have a profile construction or be designed as such. The profile construction can be one-piece or multi-piece, in particular two-piece, three-piece, four-piece or five-piece, and / or be composed of several, for example two, three, four or five, parts, in particular profile parts. The parts can be connected to one another by means of positive locking, frictional locking and / or material locking. In particular, individual parts of a frame leg 8 can be screwed and / or riveted and / or welded to one another. For example, a frame leg 8 can consist of three parts, wherein a middle part is arranged between an upper part and a lower part and can comprise an insulating element 36.

[0064] An engagement portion 20 and / or a guide portion 24 can be formed substantially integrally with a frame leg 8, in particular with a connecting leg 12. Thus, no assembly step is required to connect an engagement portion 20 and / or a guide portion 24 to a frame leg 8.

[0065] A frame leg 8 can be made of metal, in particular aluminum, and / or a metal alloy, or can comprise such a material. The frame leg 8 can be produced by extrusion, which in particular allows cost-effective production. Alternatively, a frame leg 8 can be produced by machining and / or forming processes. Alternatively, a frame leg 8 can be substantially molded from plastic and produced by extrusion or injection molding. A frame leg 8 is preferably hollow at least in some regions in order to reduce material and / or weight. In particular, a frame leg 8 can have a cavity in which an insulating element 36 can be provided.

[0066] The guide structure 18 formed by the engagement section 20 and the guide section 24 preferably allows a relative displacement, in particular a translational displacement, of the base frame modules 2 in a longitudinal direction L. Thus, the base frame modules 2 can be brought into a predetermined alignment state with respect to one another while the engagement section 20 and the guide section 24 are engaged. This enables an alignment of the base frame modules 2 in the longitudinal direction L while maintaining a predetermined alignment state in the transverse direction Q and the vertical direction H. This facilitates the correct positioning of the base frame modules and thus the mounting of the window frame system 1 on a roof structure.

[0067] Furthermore, an alternative or additional guide structure 18 can be formed by adjacent load bars 16 of two base frame modules 2. In particular, an engagement section 20 can be provided on a load bar 16 of one of the base frame modules 2, preferably on both load bars 16 assigned to the same connecting leg 12. This allows an alternative and / or additional guide structure 18 to be formed in order to achieve improved guidance and / or alignment. An exemplary engagement section 20 on a load bar can, in particular, comprise an extension and / or projection which projects from the load bar 16 of one base frame module 2 toward the load bar 16 of the other base frame module 2.Preferably, an engagement portion 20 is configured to be placed on and / or engaged with a guide portion 24 of the load bar 16 of the other base frame module 2, said guide portion 24 being directed substantially upwards in the height direction H, in order to form a guide structure 18. A guide structure 18 formed by load bars 16 is particularly advantageous for connecting base frame modules 2 that have substantially identically designed longitudinal legs 10 on both sides, and / or for connecting connecting legs 12 substantially without engageable engagement portions 20 and / or guide portions 24. Thus, identical base frame modules 2 can be provided, which are provided with load bars 16 with an engagement portion 20 on one side and load bars 16 with a guide portion 24 on the other side in the arrangement direction.

[0068] In Figure 5aFurther shown is a drainage channel 40 of a connecting leg 12, which is formed on an inner side of the connecting leg 12 with respect to a frame plane of the base frame module 2. As described in detail below, the drainage channel 40 is particularly designed to drain condensate that forms in a substantially sealed space between an outer sealing element 30, an inner sealing element 32, a frame leg 8, and a window sash 4.

[0069] Figure 5b shows a front view of two connecting legs 12, as for example in Figure 5a shown, wherein the connecting legs 12 are not in engagement with each other.

[0070] A guide section 24 of one connecting leg 12 for forming a guide structure 18 preferably has a receiving section with a support surface 28, which is designed to be connected to a region of an engagement section 20 of another base frame module 2 that projects in the transverse direction Q and / or arrangement direction. The support surface 28 can be oriented upwards in a height direction H and support at least a part of the engagement section 20, in particular a distal end region of a bridging section, from below in the height direction H. A distal end region of the bridging section of the second base frame module 2b can support both the window sash 4 assigned to the second base frame module 2b and the window sash 4 assigned to the first base frame module 2a, as shown, for example, in the Figure 3 shown.

[0071] For example, an engagement section 20 of the second base frame module 2b, designed as a gutter forming section, has two outer sealing elements 30, wherein one of the outer sealing elements 30 is assigned to the window sash 4 of the first base frame module 2a and one of the outer sealing elements 30 is assigned to the window sash 4 of the second base frame module 2b. This allows for improved tightness and water drainage through the gutter forming section, since both window sashes 4 are sealed directly opposite the gutter forming section. This prevents water from seeping into a gap in a connecting area between the adjacent base frame modules 2.

[0072] The (drain channel) receiving section of the guide section 24 can have a guide slope 26, wherein the guide slope 26 preferably extends continuously over substantially the entire length of the guide section 24.

[0073] The receiving section preferably has a guide bevel 26 for guiding the hooking projection 22 of the bridging section into the hooked state. Such a guide bevel 26 facilitates the connection and / or engagement of the bridging section with the receiving section. The guide bevel 26 can be inclined upwards in the vertical direction H and in the transverse direction Q toward an inner side of the connecting leg 12 itself and / or facing the connecting leg 12 itself. The guide bevel 26 preferably extends parallel to the connecting leg 12 at least in some areas.

[0074] By means of the guide slope 26 of the receiving section of the first base frame module 2a, the second base frame module 2b, in particular, can be guided by gravity into the predetermined alignment in the vertical direction H and transverse direction Q relative to the first base frame module 2a, or into the desired position relative to each other. This allows for simplified alignment and / or positioning of the second base frame module 2b relative to the first base frame module 2a.

[0075] Figure 6shows a sectional view of an exemplary base frame module 2 with two frame legs 8 designed as connecting legs 12 and an associated window sash 4 with a window pane 6. The base frame module 2 shown is particularly designed to be arranged between two other base frame modules 2 and to form with them a guide structure 18 as described in the process. The base frame module 2 shown can, for example, be connected to the second base frame module 2b in Figure 2 are equivalent to.

[0076] The base frame module 2 comprises, on one side, a connecting leg 12 with a guide portion 24, which is configured to engage with an engagement portion 20 of another base frame module 2. The base frame module 2 comprises, on the other side, a connecting leg 12 with an engagement portion 20, which is configured to engage with a guide portion 24 of another base frame module 2.

[0077] Preferably, the engagement portion 20 and the guide portion 24 of the base frame module 2 are designed to be compatible with one another. In other words, an engagement portion 20 of another base frame module 2, which is designed substantially identically to the engagement portion 20 of the base frame module 2 shown, can engage with the guide portion 24 of the base frame module 2 shown such that a predetermined alignment state of the two base frame modules 2 with respect to one another is achieved. Likewise, a guide portion 24 of another base frame module 2, which is designed substantially identically to the guide portion 24 of the base frame module 2 shown, can engage with the engagement portion 20 of the base frame module 2 shown such that a predetermined alignment state of the two base frame modules 2 with respect to one another is achieved.As a result, the base frame module 2 shown is particularly designed to be provided as an internally arranged base frame module 2 in a window frame system 1, such as, for example, the second base frame module 2b in the window frame system 1 of the . Figure 2 .

[0078] The base frame module 2 can comprise two outer sealing elements 30 oriented in the longitudinal direction L, but only one serves to seal against the associated window sash 4. The other outer sealing element 30 is not in contact with the associated window sash 4, but serves to seal against a window sash 4 of an adjacent base frame module 2. The base frame module 2 can have further outer sealing elements 30, for example, along one or both transverse legs 14.

[0079] The base frame module 2 can have an inner seal, in particular an inner sealing element 32, which can be flexible and, in particular, made of rubber. The inner sealing element 32 is preferably arranged on a projection protruding toward the interior of the frame and, for sealing against the window sash 4, in an inner region between the frame legs 8. The inner sealing element 32 can be arranged or protrude upwards in the vertical direction H and, in the closed state, seal against a sealing end face 7 of the window sash 4, which is directed downwards in the vertical direction H.

[0080] To drain condensate that can form in a substantially sealed space between frame legs 8 and window sash 4 or in the window rebate when closed, the base frame module 2 can have one or more drainage channels 40. A drainage channel 40 can be formed by a section of the longitudinal leg 10 or connecting leg 12 and / or the transverse leg 14, which protrudes into the interior of the base frame module 2 in a plane parallel to the frame plane or window plane. A drainage channel 40 can be designed in the form of a flange on the inside of the base frame module 2, in particular at least partially circumferentially. The substantially sealed space can be formed by an inner seal for sealing towards the inside of the roof window, namely the inner sealing element 32, and an outer seal for sealing towards the outside of the roof window, namely the outer sealing element 30.

[0081] The inner sealing element 32 can be formed as part of the drainage channel 40 and, in particular, can be arranged at least partially circumferentially on a free end region of the section of the longitudinal leg 10 or connecting leg 12 and / or the transverse leg 14 that projects into the interior of the base frame module 2. When the window sash 4 is closed, the inner sealing element 32 rests against a sealing end face 7 of the window sash 4, which projects in the vertical direction H towards the base frame module 2. Condensation can form, in particular, on an upper section, in the vertical direction H, of the inner side surfaces of the longitudinal leg 10 or connecting leg 12 and / or the transverse leg 14, since this section is in contact with the cooler ambient air on the outside and is cooled by it. The condensation can flow down the inner side surfaces of the longitudinal leg 10 or connecting leg 12 and / or the transverse leg 14 ordrip down and are collected and drained away in the drainage channel 40 below.

[0082] Figure 7 shows an exemplary corner connection of frame legs 8 of a base frame module 2. The corner connection is formed by a transverse leg 14 and a longitudinal leg 10. The longitudinal leg 10 can be designed as a connecting leg 12.

[0083] The longitudinal leg 10 has a projecting section 10a and a recessed section 10b at the end region forming the corner connection. An end face of the projecting section 10a, directed in the direction of extension of the longitudinal leg 10, is arranged further forward in the direction of extension than the end face of the recessed section 10b.

[0084] The transverse leg 14 has a projecting portion 14a and a recessed portion 14b at the end region forming the corner connection. An end face of the projecting portion 14a, directed in the direction of extension of the transverse leg 14, is arranged further forward in the direction of extension than the end face of the recessed portion 14b.

[0085] In other words, the longitudinal leg 10 and the transverse leg 14 each comprise an L-shaped and / or stair-shaped and / or step-shaped end region, which is formed by a projecting section 10a / 14a and a recessed section 10b / 14b.

[0086] In the example shown, the projecting portion 10a of the longitudinal leg 10 is arranged in the height direction H above the projecting portion 14a of the transverse leg 14. However, alternatively, the projecting portion 14a of the transverse leg 14 can be arranged in the height direction H above the projecting portion 10a of the longitudinal leg 10.

[0087] The longitudinal leg 10 and the transverse leg 14 are preferably aligned and / or connected to one another in such a way that they form a positive connection in at least one predetermined direction. The recessed section 10b of the longitudinal leg 10 rests laterally against the projecting section 14a of the transverse leg 14, and the recessed section 14b of the transverse leg 14 rests against the projecting section 10a of the longitudinal leg 10. This creates a positive connection in the direction of extension of the longitudinal leg 10 toward the transverse leg 14 and in the direction of extension of the transverse leg 14 toward the longitudinal leg 10, thus achieving improved force transmission and / or strength of the corner connection of the base frame module 2.

[0088] Furthermore, a surface of the projecting section of one frame leg 8 directed downwards in the height direction H can abut against a surface of the projecting section of the other frame leg 8 directed upwards in the height direction H. This allows a positive connection in the height direction H to be formed.

[0089] In the example shown, the surface of the projecting portion 10a of the longitudinal leg 10 facing downwards in the height direction H rests against the surface of the projecting portion 14a of the transverse leg 14 facing upwards. This creates a positive connection in the height direction H, wherein a force acting downwards on the longitudinal leg 10 in the height direction H is transmitted to the transverse leg 14 and / or the longitudinal leg 10 is supported from below by the transverse leg 14 in the end region.

[0090] The frame legs 8 can be additionally connected to one another and / or fixed to one another with connecting elements, in particular screws.

[0091] The corner connection shown is particularly advantageous because it allows frame legs 8 with different visible widths to be connected to each other in the vertical direction H, which is difficult to achieve with a miter cut. Furthermore, connecting elements such as screws, rivets, and / or pins are essentially not subjected to shear forces, or at least are subjected to significantly reduced shear forces.

[0092] The example shown is particularly advantageous because a drainage channel of the longitudinal leg 10 formed by the engagement section 20 or by the drainage channel forming section extends over the transverse leg 14, so that the drainage channel is essentially continuous. Preferably, the end region of the drainage channel projects beyond a projecting section 14a of the transverse leg 14 located below in the vertical direction H, so that water flowing from the drainage channel does not come into contact with the transverse leg 14.

[0093] Preferably, a base frame module 2 comprises the exemplary corner connection shown at all of its corners, at least at corners which are from a connecting leg 12 and a cross leg 14.

[0094] Figure 8a shows an exemplary longitudinal leg 10 and / or connecting leg 12, in particular for the Figure 7corner connection shown. The longitudinal leg 10, which can be designed as a connecting leg 12, can have a drainage channel 40 on a side oriented toward the interior of the base frame module 2.

[0095] The drainage channel 40 can extend substantially continuously between the end regions of the longitudinal leg 10. Preferably, the drainage channel 40 extends in alignment with the recessed portion 10b and / or to the plane formed by the end face of the recessed portion 10b.

[0096] The longitudinal leg 10 may comprise a drainage channel 44, which preferably extends at least partially within the longitudinal leg 10 to drain (condensate) water collected in the drainage channel 40. The drainage channel 44 may be provided at least in one end region of the longitudinal leg 10 or may extend substantially over the entire extent of the longitudinal leg 10.

[0097] The drainage channel 44 is preferably arranged in a cavity of the longitudinal leg, which is designed as a profile structure. The drainage channel 44 can, for example, be formed in a cavity and / or profile part of the connecting leg 10 partially filled by an insulating element 36.

[0098] The longitudinal leg 10 can have a through-opening 42 that connects the drainage channel 40 to the drainage channel 44 and allows water to be drained from the drainage channel 40 via the drainage channel 44. The through-opening 42 is preferably arranged in an eaves-side end region of the drainage channel 40 when installed, so that water collected there can be advantageously drained away due to a gradient from the ridge to the eaves. The through-opening 42 can, in particular, comprise a bore and / or punched portion substantially transverse to the direction of extension of the longitudinal leg 10.

[0099] Figure 8bshows an exemplary cross leg 14, in particular for the Figure 7 corner connection shown, wherein the transverse leg 14 has a projecting section 14a which is arranged in the height direction H below a recessed section 14b.

[0100] The transverse leg 14 is designed to form an advantageous corner connection with a longitudinal leg 10.

[0101] The visible width in the height direction H of the lower section of the transverse leg 14, which comprises the projecting section 14a, can be smaller than the visible width in the height direction H of the upper section of the transverse leg, which comprises the recessed section 14b.

[0102] Figure 9 shows another view of the Figure 7 shown exemplary corner connection, more precisely a view of the sides of the longitudinal leg 10 and the transverse leg 14 facing the interior of the base frame module 2.

[0103] As shown, an inner seal comprising an inner sealing element 32 can be provided, wherein the inner sealing element 32 is preferably arranged substantially circumferentially around the frame, so that the inner sealing element 32 rests completely circumferentially against the sealing end face 7 of the window sash 4 in the closed state and seals against it.

[0104] Preferably, the longitudinal leg 10 and the transverse leg 14 each have a drainage channel 40, which are connected to each other in the region of the corner connection such that water can flow between the drainage channels 40. As a result, water collected and / or trapped in the drainage channel 40 of the longitudinal leg 10 can flow into the drainage channel 40 of the transverse leg 14, and vice versa.

[0105] The through-opening 42 in the longitudinal leg 10 is preferably arranged substantially flush with the drainage channel 40 of the transverse leg 14 and / or at an eaves-side end of the drainage channel 40 of the longitudinal leg 10. This enables substantially complete drainage of water from all drainage channels 40, in particular from the drainage channel 40 of the transverse leg 14 arranged furthest toward the eaves.

[0106] Preferably, both longitudinal legs 10 of a base frame module 2 comprise a drainage channel 40 and / or a through opening 42 and / or a drainage channel 44.

[0107] Figures 10a -d show an exemplary method for connecting two base frame modules 2 in a predetermined alignment state to each other.

[0108] Figure 10ashows a provided first base frame module 2a and a provided second base frame module 2b in an exemplary initial state. The base frame modules 2 can be arranged offset from one another substantially parallel, wherein the frame plane spanned by the first base frame module 2a is oriented substantially parallel to the frame plane spanned by the second base frame module 2b.

[0109] Figure 10b shows the first base frame module 2a and the second base frame module 2b in a predetermined alignment state to each other in the transverse direction Q and / or a desired state of the base frame modules 2 in the arrangement direction of the window frame system 1.

[0110] From the Figure 10aIn the initial state shown, a relative displacement, preferably a substantially translational displacement, of the base frame modules 2 took place such that at least a region of the connecting legs 12 and / or at least a region of the load blades 16 of the two base frame modules 2 abut one another. For example, the relative displacement comprises a substantially translational displacement of the second base frame module 2b relative to the first base frame module 2a in the direction of the arrow (transverse direction Q) until the second base frame module 2b abuts the first base frame module 2a and / or the second base frame module 2b comes into contact with the first base frame module 2a. In particular, a region of the respective load blades 16 and / or a region of the respective intermediate sealing elements 34 of the two base frame modules 2 can abut one another.

[0111] Figure 10cshows the first base frame module 2a and the second base frame module 2b in a predetermined alignment state to each other in the transverse direction Q and in the height direction H and / or a desired state of the base frame modules 2 in the arrangement direction of the window frame system 1 and in the height direction H.

[0112] From the Figure 10bIn the state shown, a relative displacement, preferably a substantially translational displacement, of the base frame modules 2 took place such that at least one region of the engagement section 20 engages with at least one region of the guide section 24 of the base frame modules 2. For example, the relative displacement comprises a substantially translational displacement of the second base frame module 2b relative to the first base frame module 2a in the direction of the arrow (height direction H) until the engagement section 20 of the second base frame module 2b rests at least partially against and / or engages with the guide section 24 of the first base frame module 2a.

[0113] Alternatively, the base frame modules 2 can be switched from any initial state to the Figure 10cThe alignment state shown can be brought into effect by successive and / or substantially at least partially simultaneous displacement. An exemplary displacement may comprise a substantially translational, pivoting, and / or rotating displacement.

[0114] For example, the second base frame module 2b, in a tilted state and with the connecting legs 12 of the base frame modules 2 oriented essentially parallel, can be displaced essentially translationally relative to the first base frame module 2a until at least one region of the engagement section 20 of the second base frame module 2b comes into contact with at least one region of the guide section 24 of the first base frame module 2b, preferably until a distal end region of the bridging section of the second base frame module 2b bears against the receiving section of the first base frame module 2a. Subsequently, a substantially rotational displacement of the second base frame module 2b about an axis can take place essentially correlating with the direction of extension of the engagement section 20, if necessary with subsequent and / or at least partially simultaneous displacement in the vertical direction H downwards, until the Figure 10cshown predetermined alignment state in the transverse direction Q and height direction H.

[0115] Figure 10d shows the first base frame module 2a and the second base frame module 2b in a predetermined alignment state to each other in the transverse direction Q, in the height direction H and in the longitudinal direction L and / or a final desired state of the base frame modules 2.

[0116] From the Figure 10c In the state shown, a relative displacement, in particular a substantially translational displacement in the direction of the arrow (longitudinal direction L), of the base frame modules 2 occurred such that the base frame modules 2 are arranged substantially flush and / or in a straight line in the arrangement direction. The displacement occurs when the engagement section 20 of the second base frame module 2a is engaged with the guide section 24 of the base frame module 2b and substantially in the longitudinal direction L.

[0117] Preferably, devices in the load bars 16, for example, an optical marking and / or a through hole, provide an orientation aid to indicate that the final, predetermined alignment state of the base frame modules 2 has been reached. The base frame modules 2 can then be mounted to one another and / or on the roof structure.

[0118] The present application may further be directed to the following aspects: 1. Base frame module (2) for roof windows, comprising: a longitudinal leg (10) and a transverse leg (14), which are arranged substantially at right angles to one another and are connected to one another substantially at right angles at one end region each; wherein the longitudinal leg (10) and the transverse leg (14) each have a projecting section (10a, 14a) and a recessed section (10b, 14b) at the connected end regions; wherein the recessed section (10b) of the longitudinal leg (10) rests at its end against a lateral region of the projecting section (14a) of the transverse leg (14); and wherein the recessed section (14b) of the transverse leg (14) rests at its end against a lateral region of the projecting section (10a) of the longitudinal leg (10). 2. Base frame module (2) according to aspect 1, wherein the projecting portion (10a) of the longitudinal leg (10) is arranged above the projecting portion (14a) of the transverse leg (14). 3.Base frame module (2) according to aspect 1 or 2, wherein an underside of the projecting section (10a) of the longitudinal leg (10) rests on an upper side of the projecting section (14a) of the transverse leg (14). 4. Base frame module (2) according to one of the preceding aspects, wherein the end regions of the longitudinal leg (10) and the transverse leg (14) form a positive connection. 5. Base frame module (2) according to one of the preceding aspects, wherein an end face of the projecting section (10a) of the longitudinal leg (10) protrudes laterally from the recessed section (14b) of the transverse leg (14). 6. Base frame module (2) according to one of the preceding aspects, wherein the longitudinal leg (10) and the transverse leg (14) have different visible widths, preferably wherein the longitudinal leg (10) has a smaller visible width than the transverse leg (14). 7.Base frame module (2) according to one of the preceding aspects, wherein the longitudinal leg (10) and / or the transverse leg (10) has / have a drainage channel (40) on an inner side. 8. Base frame module (2) according to aspect 7, wherein the longitudinal leg (10) has / have a drainage channel (44) which is connected to the drainage channel (40) via a through-opening (42) and is configured to drain water via the projecting section (10a) of the longitudinal leg (10) on the eaves side. 9. Base frame module (2) according to aspect 8, wherein the through-opening (42) is arranged on an eaves-side end region of the longitudinal leg (10). 10. Base frame module (2) according to one of the preceding aspects, wherein the longitudinal leg (10) and / or the transverse leg (10) has / have a, preferably integral, profile construction. 11.Base frame module (2) according to one of the preceding aspects, further comprising a further longitudinal leg (10) and a further transverse leg (14), wherein the two longitudinal legs (10) and the two transverse legs (14) are connected to one another at end regions and form a clamping frame for a window sash (4). List of reference symbols

[0119] 1 Window frame system 2 Base frame module 2a First base frame module 2b Second base frame module 2c Third base frame module 4 Window sash 6 Window pane 7 Sealing face 8 Frame leg 10 Longitudinal leg 10a Projecting section of longitudinal leg 10 Recessed section of longitudinal leg 12 Connecting leg 14 Cross leg 14a Projecting section of cross leg 14 Recessed section of cross leg 16 Load bar 17 Mounting foot 18 Guide structure 20 Engagement section 22 Hooking projection 24 Guide section 26 Guide bevel 28 Support surface 30 Outer sealing element 32 Inner sealing element 34 Intermediate sealing element 36 Insulating element 38 Fixing element 40 Drain channel 42 Through-opening 44 Drain channel L Longitudinal direction Q Transverse direction Height direction

Claims

1. Base frame module (2) for roof windows, comprising: a longitudinal leg (10) and a transverse leg (14), which are arranged substantially at right angles to one another and are connected to one another substantially at right angles at one end region each; wherein the longitudinal leg (10) and the transverse leg (14) each have a projecting section (10a, 14a) and a recessed section (10b, 14b) at the connected end regions; wherein the recessed section (10b) of the longitudinal leg (10) rests at its end against a lateral region of the projecting section (14a) of the transverse leg (14); wherein the recessed section (14b) of the transverse leg (14) rests at its end against a lateral region of the projecting section (10a) of the longitudinal leg (10); and wherein an end face of the projecting portion (10a) of the longitudinal leg (10) projects laterally from the recessed portion (14b) of the transverse leg (14).

2. Base frame module (2) according to claim 1, wherein the projecting portion (10a) of the longitudinal leg (10) is arranged above the projecting portion (14a) of the transverse leg (14).

3. Base frame module (2) according to claim 1 or 2, wherein a bottom side of the projecting portion (10a) of the longitudinal leg (10) rests on a top side of the projecting portion (14a) of the transverse leg (14).

4. Base frame module (2) according to one of the preceding claims, wherein the end regions of the longitudinal leg (10) and the transverse leg (14) form a positive connection.

5. Base frame module (2) according to one of the preceding claims, wherein the longitudinal leg (10) and the transverse leg (14) have different visible widths, preferably wherein the longitudinal leg (10) has a smaller visible width than the transverse leg (14).

6. Base frame module (2) according to one of the preceding claims, wherein the longitudinal leg (10) and / or the transverse leg (10) has / have a drainage channel (40) on an inner side.

7. Base frame module (2) according to claim 6, wherein the longitudinal leg (10) has a drainage channel (44) which is connected to the drainage channel (40) via a through opening (42) and is designed to drain water via the projecting section (10a) of the longitudinal leg (10) on the eaves side.

8. Base frame module (2) according to claim 8, wherein the through opening (42) is arranged at an eaves-side end region of the longitudinal leg (10).

9. Base frame module (2) according to one of the preceding claims, wherein the longitudinal leg (10) and / or the transverse leg (10) has / have a, preferably integral, profile construction.

10. Base frame module (2) according to one of the preceding claims, further comprising a further longitudinal leg (10) and a further transverse leg (14), wherein the two longitudinal legs (10) and the two transverse legs (14) are connected to one another at end regions and form a clamping frame for a window sash (4).

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