Frame arrangement for a roof window and roof windows with a frame arrangement

Abstract

Frame arrangement (2) for a roof window (1), comprising a frame (3), a connecting frame (6) separately designed from the frame (3) and attached to the frame (3), and a functional frame (7), wherein the functional frame (7) encompasses the connecting frame (6) and is displaceable relative to the connecting frame (6) along a straight line perpendicular to a frame plane spanned by the frame (3), wherein a functional component (39) of the connecting frame (6) has a guide device (42) by means of which the functional frame (7) is displaceably mounted on the connecting frame (6), characterized in that the guide device (42) has a guide receptacle (43) into which a guide projection (44) of the functional frame (7) engages in a form-fitting manner.

Description

[0001] The invention relates to a frame arrangement for a roof window, comprising a frame, a connecting frame separately designed from and attached to the frame, and a functional frame, wherein the functional frame encompasses the connecting frame and is displaceable relative to the connecting frame along a straight line perpendicular to a frame plane spanned by the frame, wherein a functional component of the connecting frame has a guide device by means of which the functional frame is displaceably mounted on the connecting frame. The invention further relates to a roof window with such a frame arrangement.

[0002] For example, German patent application DE 10 2010 027 419 A1 is known from the prior art. This document describes a roof window arrangement with a roof window, in particular a residential roof window, which has a frame to which a thermal insulation frame attachable to a roof structure is assigned. It is provided that the thermal insulation frame forms a mounting frame, wherein the frame is attached to the mounting frame, in particular only to the mounting frame, and in particular by screws, to secure the roof window.

[0003] Furthermore, German patent application DE 20 2020 003 790 U1 describes a roof window arrangement characterized by the fact that the roof windows are arranged orthogonally across a roof surface. Further prior art is shown in patent applications US 4 972 638 A, DE 603 ​​07 869 T2, DE 10 2015 000 597 A1 and DE 198 25 474 A1.

[0004] The object of the invention is to propose a frame arrangement for a roof window which has advantages over known frame arrangements, in particular enabling quick and reliable installation of the roof window while simultaneously providing excellent sealing and weather resistance.

[0005] According to the invention, this is achieved with a frame arrangement for a roof window having the features of claim 1. It is provided that the guide device has a guide receptacle into which a guide projection of the functional frame engages in a form-fitting manner.

[0006] Advantageous embodiments with expedient further developments of the invention are specified in the dependent claims. It should be noted that the exemplary embodiments described in the description are not limiting; rather, any variations of the features disclosed in the description, the claims, and the figures are possible.

[0007] The frame assembly is preferably part of the roof window, but can also be used separately. Similarly, the roof window can be part of a building, but can of course also exist separately, particularly until it is installed on the building or on the building's roof. The building has a roof, on or in which the roof window is designed and installed. The roof lies between the building's exterior and interior spaces, thus separating them. The roof window serves to close off, at least temporarily and / or partially, an opening in the roof. This opening can also be referred to as a roof opening.

[0008] The roof essentially consists of a roof structure and a roof covering. The roof structure includes, for example, one or more rafters and one or more battens. Additionally, the roof structure has insulation, which can be designed as under-rafter insulation, between-rafter insulation, and / or above-rafter insulation. For clarity, the insulation is also referred to as roof insulation in this description. The battens can be divided into counter battens and purlins, with the presence of counter battens being optional. Purlins are usually angled, particularly perpendicular, to the rafters and attached to them. Counter battens, on the other hand, preferably run at an angle to the purlins, particularly perpendicular to them, and / or parallel or at least substantially parallel to the rafters.

[0009] The roof covering is attached to the exterior of the roof structure, thus defining its boundary with the outside environment. The roof covering refers specifically to the roofing material or roof waterproofing. This roofing material consists, for example, of multiple roof tiles, roofing stones, shingles, or similar materials. On the interior side, the roof structure is typically bounded by an interior wall. This interior wall is attached to the roof structure on its interior-facing side. For example, a skylight is connected to the interior wall via an interior lining.

[0010] A roof window, also known as a skylight, is preferably a residential roof window or skylight. It is preferably designed to partially, and preferably completely, close off the roof opening, either partially or completely, with light transmission or opacity. If the roof window is translucent, it typically has glazing, such as single glazing or multiple glazing, particularly double or triple glazing.

[0011] The roof window features a frame assembly, which preferably forms part of the roof window. However, the frame assembly can, of course, also exist separately from the roof window. The frame assembly comprises the fixed frame and – optionally – a sash frame. Both the fixed frame and the sash frame each have several frame members; the fixed frame thus has several fixed frame members, and the sash frame (if provided) has several sash frame members. The frame members of each frame are attached to one another in such a way that they enclose a section of the roof window between them. The frame members of each frame thus each form a closed frame or a closed frame element.

[0012] The frame and, optionally, the sash frame are designed to overlap and / or cover the roof opening. Preferably, the frame and the optional sash frame are arranged and designed to completely close the roof opening, at least temporarily, particularly in conjunction with the glazing. For this purpose, the glazing is supported either directly by the frame or by the sash frame. For example, it is framed by the multiple mullions of the respective frame, i.e., either by the frame mullions of the frame itself or by the sash mullions of the sash frame.

[0013] Preferably, the roof window is operable and closable, meaning it can be opened and closed and is designed accordingly. Consequently, the roof window can be in different opening states, in which the two frames of the window, i.e., the frame and the sash, are arranged differently relative to each other. For example, in a first opening state, the roof window is closed, and in a second opening state, it is at least partially or even completely open. The first opening state can also be referred to as the closed state, and the second as the open state. In the closed state of the roof window, an opening bounded by the frame is more completely closed by the sash, particularly including the glazing, than in the open state. In particular, the opening of the frame is completely closed by the sash in the closed state, preferably together with the glazing.

[0014] The sash frame is movable relative to the frame, in particular pivotable. If glazing is present, it is preferably arranged or attached to the sash frame and is only indirectly supported by the frame via the sash frame. Accordingly, the glazing, together with the sash frame, is movable or pivotable relative to the frame. For this purpose, the sash frame is mounted about the axis of rotation relative to the frame, in particular on the frame.

[0015] For example, the sash can pivot relative to the frame about exactly one axis of rotation. In the intended installation of the roof window, this first axis of rotation lies on the top of the frame or at least in the upper third of the frame. Such a roof window can also be called a top-hung window. Additionally or alternatively, the sash can be pivoted relative to the frame about a second axis of rotation, namely a second axis of rotation different from the first. The second axis of rotation lies, for example, in the middle third of the frame. Such a roof window can also be called a center-pivot window. If the sash can pivot relative to the frame about both the first and second axes of rotation, the roof window is designed as a top-hung center-pivot window. I. Connection frame

[0016] The roof window, and in particular its frame, is mounted to the roof using the connecting frame. This frame is also part of the roof window assembly, but it is designed separately from the frame and attached to it. This means that the frame and the connecting frame are initially independent of each other and not attached to one another. Rather, they are only attached to each other later, for example, during installation. This allows for a high degree of flexibility when installing the roof window; in particular, it is possible to replace parts of the roof window, especially the frame, independently of replacing the connecting frame.When replacing the frame, the connecting frame can remain attached to the roof. Similarly, any connection between the connecting frame and the roof, for example via a vapor barrier or similar, can remain in place despite the frame replacement and does not need to be loosened or replaced. The frame and connecting frame can be attached to each other in any way; for example, they can be fastened together using one or more fasteners, particularly pins, screws, or similar components.

[0017] To further simplify the installation of the roof window on the roof, and in particular to facilitate the creation of a tight and weatherproof connection between the roof window and the roof, the functional frame is an integral part of the roof window or frame assembly. This assembly comprises at least the frame, the connecting frame, and the functional frame. Both the connecting frame and the functional frame, like the frame, consist of several frame members, which can be referred to as connecting frame members and functional frame members, respectively. Preferably, the functional frame members are arranged overlapping the frame members, i.e., extending from them. The connecting frame members enclose or surround an opening that overlaps with the opening enclosed by the frame members.The opening enclosed by the connecting frame members is preferably at least as large as the opening enclosed by the frame members, preferably it is larger.

[0018] The functional frame members encompass an opening defined by the functional frame. The connecting frame is arranged within this opening such that the functional frame encompasses the connecting frame, in particular completely and continuously. At the same time, it is displaceable relative to the connecting frame, namely along a displacement path that preferably runs along a straight line perpendicular to the frame plane. The frame plane is understood to be an imaginary plane spanned by the frame, which is particularly a central plane and thus runs centrally through the frame members. This imaginary plane extends completely, and in particular centrally, through the opening defined by the frame. The frame plane lies, for example, parallel to a glazing plane in which the (optional) glazing of the roof window is located.

[0019] The straight line perpendicular to the frame plane preferably runs parallel to a longitudinal center axis of the frame assembly, particularly the frame itself. This axis is also perpendicular to the frame plane and passes centrally through the opening defined by the frame. A vertical axis and a transverse axis lie within the frame plane and are perpendicular to each other. The vertical axis and the transverse axis are preferably each perpendicular to two frame members, in particular the vertical axis to two transverse members and the transverse axis to two vertical members. When the roof window is installed on the roof as intended, the transverse axis is perpendicular, or at least nearly perpendicular, to a gravitational force vector.

[0020] Due to the movable nature of the functional frame relative to the connecting frame and consequently to the frame, a particularly simple and reliable adaptation of the roof window to the roof is possible. Specifically, during the installation of the roof window, the functional frame is placed on the roof, particularly on the roof covering or on the roof structure, especially on the roof battens or the insulation of the roof structure. Subsequently, the frame is positioned in its installation position, with the functional frame remaining in contact with the roof. The frame and the connecting frame move relative to the functional frame, particularly into the roof, i.e., towards the interior. It may be possible to connect the connecting frame to the frame before the functional frame is positioned on the roof and to position the frame, connecting frame, and functional frame together on the roof.However, it may also be possible to initially only arrange the connecting frame with the functional frame on the roof and only subsequently connect the trim frame to the connecting frame.

[0021] For example, the functional frame is adjusted relative to the connecting frame before the frame is joined to the connecting frame, in order to position the connecting frame in its final position. Subsequently, the frame is positioned on the connecting frame in its assembly position without moving the functional frame relative to the connecting frame. Alternatively, the functional frame may initially be in a first position relative to the connecting frame. During the positioning of the frame on the roof or the connecting frame, the functional frame is moved relative to the connecting frame while it rests against and is supported by the roof, so that it is subsequently positioned in a second position relative to the connecting frame, different from the first position.This means that while the frame is being moved into its installation position, the connecting frame and the functional frame move relative to each other. In this way, a particularly good fit of the roof window to the roof is achieved, ensuring good sealing and weather resistance.

[0022] In the installation position, the frame is connected to or attached to the roof structure, in particular by screwing it to the roof structure. Once the installation is complete, the roof window is reliably and permanently held to the roof by the direct attachment of the frame. The connecting frame and the functional frame further ensure a tight and permanent seal between the roof window and the roof. Preferably, the connecting frame is only indirectly attached to the roof, namely via the frame and / or the functional frame that rests against the roof. The functional frame has dimensions along its longitudinal center axis that correspond to, for example, at most 50%, 40%, or 30% of the dimensions of the connecting frame in that direction.Additionally or alternatively, the connecting frame has dimensions in the direction of the longitudinal center axis which correspond to at least 75%, at least 100% or at least 125% of the dimensions of the frame in the same direction.

[0023] Where this description refers to a displacement of the connecting frame relative to the functional frame, or a displacement of the functional frame relative to the connecting frame, the statements are equivalent. It always refers to a relative movement of the two frames to each other, regardless of which frame is actually displaced. Using the described frame arrangement for the roof window, the goal of quick and reliable installation of the roof window on the roof is achieved.

[0024] According to the invention, a functional component of the connecting frame has a guide device by means of which the functional frame is movably mounted on the connecting frame. The functional component is part of the connecting frame, in particular it is integrated into one of the connecting frame members. The functional component has the guide device by means of which the functional frame is mounted on the connecting frame for displacement along the displacement path. Preferably, the guide device allows the functional frame to be linearly displaceable on the connecting frame, so that the displacement path is continuously straight. Preferably, several functional components and correspondingly several guide devices are provided, which are arranged at intervals from one another on the connecting frame.This ensures reliable positioning of the functional frame relative to the connecting frame and reliably prevents the two frames from tilting against each other. The described design of the roof window and the frame arrangement facilitate easy installation of the roof window while reliably creating a tight seal between the roof window and the roof.

[0025] Furthermore, the invention provides that the guide device has a guide receptacle into which a guide projection of the functional frame engages in a form-fitting manner. The guide receptacle is, for example, a recess that is aligned parallel to the line perpendicular to the plane of the frame or to the longitudinal center axis of the frame or the frame assembly. Preferably, the guide receptacle extends completely through the guide device, in particular the functional component, in the direction of its longitudinal axis. In particular, the guide recess extends completely through the connecting frame in this direction. If several guide devices and correspondingly several guide receptacles are present, the guide receptacles run parallel to each other to ensure the movableness of the functional frame relative to the connecting frame. The guide projection, which engages in the guide receptacle, is located on the functional frame.For example, the guide projection engages behind spaced-apart, parallel edges that define the guide receptacle in order to hold the functional frames to the connecting frame in a form-fitting manner.

[0026] The guide device and the guide projection allow the functional frame to move relative to the connecting frame only along the path of movement; movement in other directions is prevented. The guide projection extends inwards from the functional frame, i.e., towards the connecting frame. If multiple guide receptacles are provided, multiple guide projections are also present, with one of the guide projections engaging positively in each of the guide receptacles. This reliably achieves the aforementioned advantages.

[0027] A further development of the invention provides that the functional frame is connected to the connecting frame by means of a locking device, either by means of a locking mechanism or by means of a spring arrangement, allowing it to be resiliently connected. The locking device serves to fix the functional frame relative to the connecting frame in specific positions and to allow movement from these positions only when a certain force is applied. This means that the locking device provides several locking positions. If a position of the functional frame and connecting frame is relative to each other outside of these locking positions, the functional frame and connecting frame can be moved relative to each other with a lower initial force. If, on the other hand, the position corresponds to one of the locking positions, the functional frame is held in this locking position relative to the connecting frame until a larger second force is applied to the functional frame and / or the connecting frame.

[0028] Only by applying this second force is movement from the corresponding locking position permitted. The locking mechanism may allow movement of the functional frame and the connecting frame relative to each other in opposite directions. Alternatively, movement may be permitted without damage only in one direction, for example, movement of the connecting frame relative to the functional frame towards the interior when the functional frame is in contact with the roof. This ensures that the functional frame remains reliably in contact with the roof at all times.

[0029] Additionally or alternatively, the functional frame is coupled to the connecting frame via a spring assembly. The spring assembly creates a spring force between the functional frame and the connecting frame, which is directed such that the functional frame is pressed towards or against the roof, particularly after the mounting frame has been attached to the roof. It is possible for only the locking mechanism or only the spring assembly to be present. However, it is particularly preferred that the functional frame and connecting frame are connected to each other both via the locking mechanism and via the spring assembly. This ensures the aforementioned simple installation and the excellent weather resistance of the roof window after installation.

[0030] A further development of the invention provides that the locking device is part of the guide device and has a locking element which, at least in one position, projects into the guide receptacle for locking interaction with a counter-locking element of the functional frame. The locking element is, for example, a locking tongue which is elastically and / or resiliently connected to the functional frame. The locking element is deflectable and can therefore be arranged in several positions. The locking element itself can be elastic for this purpose. Additionally or alternatively, a spring element acts on it, which exerts a spring force on the locking element directed towards a rest position of the locking element. The spring element is, for example, a torsion spring, wherein a first leg of the spring element is supported on the connecting frame and a second leg on the locking element.

[0031] In at least one of its positions, the locking element projects into the guide recess to interact with the locking counterpart of the functional frame and lock the connecting frame and the functional frame relative to each other. The locking counterpart is preferably rigidly connected to the functional frame, and in particular, it is formed on the guide projection of the functional frame. The locking element is, for example, a locking projection, and the locking counterpart is a locking recess in which the locking projection is at least temporarily received. The described procedure enables reliable locking of the functional frame and connecting frame relative to each other in at least one locking position.

[0032] A further development of the invention provides that the spring arrangement pushes the functional frame towards a roof on which the roof window can be installed. This has already been mentioned above. With regard to the displacement path, this means in particular that the functional frame is pushed away from the frame and / or towards the connecting frame. This ensures the excellent weather resistance of the roof window mounted on the roof.

[0033] A further development of the invention provides that the locking device is arranged in a locking device receptacle formed next to the guide receptacle in the functional component, particularly in the guide receptacle itself. The locking device receptacle preferably runs parallel to the guide receptacle and is formed as an elongated recess in the functional component. Analogous to the guide receptacle, the locking device receptacle preferably extends completely through the guide receptacle, particularly the functional component, in the direction of its longitudinal axis. In particular, the locking device receptacle extends completely through the connecting frame in this direction. The locking device receptacle is spaced apart from the guide receptacle, for example, by a web. At least one recess is provided in the web, which is at least temporarily penetrated by the locking element in order to project into the guide receptacle.The locking mechanism is therefore arranged separately from the guide receptacle, ensuring particularly good protection of the locking mechanism and consequently a long service life for the locking mechanism.

[0034] A further development of the invention provides that the locking device receptacle is at least partially closed off by a locking device receptacle cover in the direction of the functional frame. When the functional frame is arranged on the connecting frame, the functional frame partially overlaps the locking device receptacle. In this area, the locking device receptacle is protected from external influences by the functional frame. However, away from the functional frame, the locking device receptacle is exposed to external influences, which could lead to impairment of the locking device. For this reason, the locking device receptacle cover is provided, which overlaps the locking device receptacle at least partially, and in particular completely, thus closing it off. The locking device receptacle cover is located between the functional component and the functional frame. This ensures a long service life for the locking device.

[0035] A further development of the invention provides that the spring assembly is an integral part of the guide device, in particular the locking device. The spring assembly is therefore integrally designed with the guide device or the locking device. Preferably, the locking device also functions as a spring assembly, thus not only holding the functional frame and the connecting frame in a locking position relative to each other, but also providing the spring force acting between the functional frame and the connecting frame. For example, the spring force is applied by the locking element arranged on the connecting frame to the corresponding locking element on the functional frame. Such a design of the roof window or the frame assembly allows for a structurally simple implementation.

[0036] A further development of the invention provides that, in addition to the locking element, the locking device has at least one further locking element which, in at least one position, projects into the guide receptacle for locking interaction with the locking counterpart of the functional frame. The further locking element is designed analogously to the locking element, so reference is made to the corresponding descriptions. The locking elements, i.e., the locking element and the further locking element, are spaced apart from one another and thus interact locking together with the locking counterpart of the functional frame in different positions of the functional frame relative to the connecting frame. The provision of the multiple locking elements enables reliable retention of the functional frame relative to the connecting frame over a wide displacement range.

[0037] A further development of the invention provides that the locking element has several separate locking recesses. These recesses serve to create a positive-locking connection to the locking element and / or the further locking element. The locking recesses are spaced apart from one another such that the locking element and / or the further locking element engages in one of the locking recesses in different positions of the functional frame relative to the connecting frame. Preferably, the locking element is designed, or the locking recesses are arranged, such that the further locking element engages in one of the locking recesses before the locking element disengages from a last of the locking recesses, and vice versa. This ensures reliable retention of the functional frame relative to the connecting frame.

[0038] A further development of the invention provides that the functional frame has a guide leg and a sealing leg angled relative to the guide leg, wherein the guide leg slides against the connecting frame and the sealing leg extends from the guide leg away from the connecting frame. In cross-section, the functional frame thus has the guide leg and the sealing leg, which are angled relative to each other, i.e., enclosing an angle greater than 0° and less than 180°. Preferably, the angle between the guide leg and the sealing leg is approximately or exactly 90°, so that they are arranged at right angles to each other.

[0039] The guide leg serves to guide the functional frame along the connecting frame. For this purpose, its inner circumferential surface rests against the connecting frame, at least partially. Preferably, the guide leg has dimensions in the direction of the longitudinal center axis of the frame or frame assembly that are dimensioned such that tilting of the functional frame relative to the connecting frame is reliably prevented. For example, its extent in this direction corresponds to at least 20%, at least 25%, or at least 30% of the extent of the connecting frame in the same direction.

[0040] The sealing leg extends from the guide leg away from the connecting frame. Preferably, it is located on the side of the guide leg facing away from the frame, or originates from it there. In particular, the dimensions of the guide leg in a plane parallel to the frame plane, especially in the direction of the transverse axis and / or the vertical axis, are similar to the dimensions of the guide leg in the direction of the longitudinal center axis. For example, they are at least 80% and at most 120% of this extent, at least 90% and at most 110% of this extent, or correspond approximately or exactly to this extent.

[0041] The sealing leg serves primarily to create a seal and / or insulation. For this purpose, a surface seal is provided on the functional frame, particularly on the sealing leg, for contact with the roof. The surface seal is located on the side of the sealing leg facing the roof, and is attached to it, for example, by a material bond. In any case, the sealing leg serves to support the functional frame against the roof, thus providing a support surface that rests against the roof, either directly or via the surface seal. II. Sandwich construction

[0042] A further development of the invention provides that the connecting frame has several interconnected frame members which are constructed in sandwich form and each have two load-bearing walls and insulation arranged between the load-bearing walls, wherein two of the frame members are connected to each other via a corner connector which engages between the load-bearing walls of both frame members and / or encompasses the load-bearing walls of both frame members, and / or wherein at least one functional component of the connecting frame engages between the load-bearing walls and is attached there.

[0043] The frame members of the connecting frame can be referred to as connecting frame members, as already explained. These are constructed using a sandwich design to achieve low weight while maintaining excellent thermal insulation. Each frame member has two spaced-apart load-bearing walls with insulation between them. In particular, the load-bearing walls run parallel to each other. Preferably, the load-bearing walls are connected to each other via the insulation; that is, they rest against the insulation on opposite sides, and in particular, they are attached to the insulation, for example, by a material bond. The insulation is preferably designed such that it creates one or more air spaces between the load-bearing walls, which provide the thermal insulation.

[0044] To achieve a stable connection frame, in a first variant the frame members are not directly attached to each other, but rather indirectly via the corner connector. The frame members themselves are thus spaced apart and held together by the corner connector. To achieve a stable connection of the frame members via the corner connector despite their sandwich construction, the corner connector engages with each of the frame members, in particular by displacing the insulation. This means that a corresponding engagement projection extends between the load-bearing walls and replaces the insulation there. For example, at least one of the load-bearing walls rests directly against the engagement projection, while the other load-bearing wall is spaced away from it and, for example, connected to it via an adhesive layer.The engagement projection extends, for example, at least 5%, at least 10%, or at least 15% of the longitudinal extent of the respective frame member into the frame. This creates a stable connection between the frame member and the corner connector, ensuring that the frame members are reliably held together.

[0045] Additionally or alternatively, the corner connector engages the load-bearing walls of the frame members or grips the end sections of the frame members. The corner connector engages the respective frame member or its end section on opposite sides, thus securing the frame member in a form-fitting manner. The corner connector can be designed to engage only between the load-bearing walls or to simply grip the load-bearing walls. However, a combination of both measures is particularly preferred, so that the corner connector has engagement projections that engage into the frame members as well as gripping the frame members, especially their end sections. This ensures a stable connection between the frame members. Despite this robust construction, the connecting frame is very lightweight due to its sandwich design and simultaneously offers good thermal insulation.Preferably, several corner connectors are provided, by which all frame members of the connecting frame are connected to each other. Each corner connector connects two of the frame members together, in particular at right angles.

[0046] In a second variant, the connecting frame or frame assembly incorporates at least one functional component of the connecting frame. To connect and attach this component to the connecting frame, it engages between the load-bearing walls. This means that the functional component is located at least partially between the load-bearing walls or at least within one of them, thus extending through one of the load-bearing walls. This securely holds the functional component to the connecting frame. The functional component primarily serves to provide a movable support for the functional frame on the connecting frame. Alternatively, it can also be used to attach a component to the connecting frame.

[0047] With the described design of the frame arrangement or the roof window, a reliable and secure connection between the frame members is achieved in the first variant, while in the second variant, the functional component is reliably attached to one of the frame members. It is possible to implement either only the connection of the frame members via the corner connector or only the attachment of the functional component to one of the frame members. Preferably, however, both variants are used together, so that the frame members are connected to each other via the corner connector and the functional component is also attached to one of the frame members connected via the corner connector, namely by engaging between the load-bearing walls.

[0048] A further development of the invention provides that the load-bearing walls consist of one of the following load-bearing wall materials: wood, wood-based material, and composite material. The wood is preferably solid wood. The wood-based material is understood to be a material containing wood elements or wood particles produced by shredding wood. Preferably, the wood elements or wood particles of the wood-based material are bonded together with a binder. The wood-based material is, for example, glued laminated timber, particularly plywood. A wood-chip material can also be used. Particularly preferred is a wood-fiber material; for example, the load-bearing walls are thus made of fiberboard, particularly hardboard. Finally, the composite material is understood to be a material composed of different materials, at least one of which forms a continuous phase.For example, the composite material is a fiber-reinforced composite, a layered composite, or the like. The material of the load-bearing walls is preferably selected such that the walls have a higher stiffness than the insulation. This results in high strength of the connecting frame.

[0049] A further development of the invention provides that the optional insulation consists of one of the following insulating materials: wood-based material and fiber-based material. Wood-based material can also be used as the insulating material, preferably in the form of wood fiber-based material. However, the wood-based material used for the insulation is preferably different from the wood-based material used for the load-bearing walls; in particular, it has a lower density, for example, a density of at most 50% of the density of the wood-based material used for the load-bearing walls. Alternatively, the insulation consists of fiber-based material. Fiber-based material is a material consisting of fibers, which contains, for example, wood pulp, semi-chemical pulp, and / or cellulose. In this respect, the insulation can consist of paper or cardboard. This provides particularly good thermal insulation.

[0050] A further development of the invention provides that the insulation is in the form of a corrugated sheet, preferably a single- or multi-wall corrugated sheet, or as a fiber molded element, in particular a fiber molded mat. The corrugated sheet is a sheet provided with corrugations, wherein a single-wall corrugated sheet is understood to be a one-dimensionally corrugated sheet and a multi-wall corrugated sheet is understood to be a multi-dimensionally corrugated sheet. In the case of a one-dimensionally corrugated sheet, the corrugation extends only in one direction, while in the case of a multi-dimensional corrugated sheet, the corrugations extend in different directions, in particular in directions perpendicular to one another. A double-wall corrugated sheet, which is preferably used, is corrugated in two directions such that wave crests and troughs alternate in each direction, particularly with a constant material thickness.

[0051] The corrugated sheet can be a fiber-reinforced molded element or manufactured as such. However, the fiber-reinforced molded element can also have a different design than the corrugated sheet. It is characterized by an embossed structure that creates peaks and valleys while maintaining a constant material thickness. The insulation serves primarily to space the load-bearing walls by creating air-filled cavities. This results in particularly good thermal insulation.

[0052] A further development of the invention provides that the corner connector and / or the functional component are made of plastic or metal. To achieve particularly high stability of the roof window or the frame assembly, the corner connector or the functional component is made of a different material than the supporting walls and the insulation. High stability is achieved in particular through the use of plastic or metal. Thus, the aforementioned advantages are reliably realized.

[0053] A further development of the invention provides that the insulation is bonded to the load-bearing walls, in particular having several projections separated by recesses, which are bonded to the load-bearing walls, preferably by means of an adhesive foam. The insulation is bonded to both load-bearing walls, for example by adhesive. The adhesive foam, which is preferably a plastic foam, is used for bonding. The use of the adhesive foam enables good thermal insulation. Preferably, the insulation is only connected to the load-bearing walls at specific points, in particular it is only attached to them at specific points, especially by means of the adhesive foam.

[0054] For this purpose, the insulation features projections that are separated from the recesses. These projections and recesses are achieved, for example, by designing the insulation as a corrugated sheet or a molded fiber element. Each of the load-bearing walls is bonded to at least a portion of the insulation projections facing it, with the projections facing one of the load-bearing walls forming the recesses on their respective sides facing the other load-bearing wall, since the insulation thickness is preferably constant. This design results in an air volume between the load-bearing walls comprising at least 50%, at least 60%, or at least 70% of the total volume between the load-bearing walls. This leads to good thermal insulation.

[0055] A further development of the invention provides that the frame members are open in cross-section, particularly on one or both sides, and / or that the insulation, together with the supporting walls, defines air spaces that completely penetrate the frame members in cross-section. The frame members themselves are not closed on their upper and / or lower surfaces, so that the insulation directly abuts the external environment of the connecting frame. Preferably, one side of the frame members facing the frame is generally open, but covered and thus closed by the frame, preferably over the entire length of the frame members.

[0056] In particular, the frame rests against the load-bearing walls in such a way that the frame members are completely overlapped by the frame on their side facing the frame. The frame members may be open on their side facing away from the frame. Alternatively, they may be closed with a cover. However, this is usually unnecessary, as a roof membrane, such as an underlayment and / or a vapor barrier or vapor retarder, is preferably attached to the connecting frame. This means that the space between the load-bearing walls, in which the insulation is located, is protected from environmental influences.

[0057] Additionally or alternatively, the insulation between the load-bearing walls creates air spaces that completely penetrate the frame members in cross-section. In other words, opposing end faces of the frame members are aerodynamically connected to each other via these air spaces. Such a design of the roof window or frame arrangement is easy to implement from a manufacturing perspective, yet still offers excellent thermal insulation, particularly due to the combination with the covering provided by the frame.

[0058] A further development of the invention provides that the corner connector has a hollow profile, in particular a hollow profile that is closed only on one side. To further improve the thermal insulation of the roof window or the frame assembly, the corner connector is also designed with at least one air space, preferably with several air spaces separated by webs. The hollow profile is closed at least on one side, in particular exactly on one side. Preferably, the hollow profile is open on its side facing the frame and closed only on its side facing away from the frame. This achieves the aforementioned advantages while simultaneously simplifying the manufacture of the corner connector.

[0059] A further development of the invention provides that the corner connector has a frame member receptacle for receiving one of the frame members, which is bounded by two limiting webs between which the frame member engages. The two limiting webs that define the frame member receptacle encompass the respective frame member to that extent and are thus arranged on the side of the load-bearing walls facing away from the insulation. Preferably, at least partially, both the load-bearing walls and the insulation engage in the frame member receptacle. Preferably, the limiting webs on opposite sides are permanently in contact with the load-bearing walls of the respective frame member. This ensures a reliable attachment of the frame member to the corner connector.

[0060] A further development of the invention provides that the limiting webs have locking webs which engage positively in locking web receptacles formed in the load-bearing walls of the frame member. The locking webs extend from the limiting webs and towards each other. In this respect, the locking webs are arranged on opposite sides of the limiting webs and converge towards each other. The positive engagement of the locking webs in the locking web receptacles reliably holds the respective frame member to the corner connector. Additionally, a material bond between the locking webs and the load-bearing walls can be provided, particularly using an adhesive, for example, adhesive tape or silicone. The locking webs and the locking web receptacles preferably run parallel to the longitudinal center axis of the roof window or the frame assembly.They preferably extend in this direction over at least 50%, at least 70%, or at least 90% of the length of the connecting frame or the load-bearing walls. The described design enables a particularly stable fastening of the frame members to one another via the corner connector.

[0061] A further development of the invention provides that the corner connector has an engagement projection that engages between the load-bearing walls. The presence of this engagement projection has already been mentioned above. The engagement projection extends through the respective frame member in the direction of the longitudinal center axis, for example, to at least 10%, at least 20%, or at least 30%. Additionally or alternatively, it extends through the frame member in the same direction to a maximum of 50%, at most 40%, or at most 30%.

[0062] A particularly preferred method for attaching the frame member to the corner connector is a combination of the engagement projection with the frame member receptacle or the limiting webs. This means that the frame member engages in the frame member receptacle and is encompassed by the limiting webs, and that the engagement projection is positioned between the load-bearing walls. This creates a permanent connection between the frame members and the corner connector.

[0063] A further development of the invention provides that a recess for receiving the engagement projection is produced in the insulation. As explained above, the engagement projection displaces the insulation. For this purpose, the recess in the insulation is produced, preferably by mechanically separating a section of the insulation. It is preferably provided that the insulation surrounds the engagement projection, in particular that it rests against it at least partially or is directly adjacent to it. This ensures good thermal insulation.

[0064] A further development of the invention provides that the functional component is supported on the engagement projection, in particular abutting it, and / or attached to it, preferably by a material bond. This means that the functional component is arranged in overlap with the engagement projection and abuts it. For example, only partial abutment is provided, so that the functional component abuts the engagement projection in some areas and is spaced away from it in others. Preferably, the functional component is attached to the engagement projection. This can be achieved particularly easily by creating a material bond, preferably by bonding the functional component and the engagement projection. Thus, the functional component is reliably held on the connecting frame.

[0065] A further development of the invention provides that the functional component extends through at least one of the load-bearing walls. In particular, the functional component extends through only one of the load-bearing walls. For this purpose, a recess is formed in the corresponding load-bearing wall through which the functional component extends into the frame member. For example, the functional component is flush with the respective load-bearing wall on its side facing away from the insulation, so that the functional component continues the respective load-bearing wall and at least partially, preferably completely, fills the corresponding recess. In particular, the functional component rests against the insulation in the frame member; in contrast to the engagement projection, the insulation is not displaced by the functional component. This results in good thermal insulation of the connecting frame.

[0066] A further development of the invention provides that the functional component projects beyond the frame member at least on one side, and in particular exclusively on one side. The projecting area of ​​the functional component preferably serves to attach the frame to the connecting frame. In particular, the functional component forms a mounting projection on its side facing the frame, which projects beyond the frame member, i.e., in the direction facing the frame. The frame is placed onto the mounting projection and is thereby positively locked to the connecting frame.

[0067] It may be designed so that the guide recess and / or the locking device recess extend through the mounting projection to simplify the manufacture of the functional component. For example, a basic element of the functional component is an extruded profile. The described design enables reliable and easy attachment of the frame to the connecting frame and thus simple installation of the roof window.

[0068] A further development of the invention provides that the frame member receptacle is partially closed off by a wall extending between the limiting webs, with the engagement projection extending from this wall. The load-bearing walls of the frame member(s) preferably have a corresponding recess so that they abut the wall in the area where it is closed and extend into the frame member receptacle away from the wall. This results in particularly high stability of the roof window or the frame assembly. III. Inserted connection frame

[0069] A further development of the invention provides that the frame is connected to the connecting frame via the functional component arranged on the connecting frame. The functional component is thus attached to the connecting frame on one side and engages the frame on the other, preferably directly. It may be provided that the functional component is fixed to the connecting frame only in some of the three spatial directions in a Cartesian coordinate system. For example, the functional component holds the frame relative to the connecting frame in an imaginary plane that is perpendicular to the longitudinal center axis or parallel to the plane of the frame. In particular, the functional component holds the frame relative to the connecting frame only in the direction of the vertical axis and in the direction of the transverse axis.In the direction of the longitudinal center axis, however, the functional component has no or only a slight holding effect, for example a force-fit effect.

[0070] Preferably, the functional component allows the frame to be attached to the connecting frame in the direction of the longitudinal center axis until the frame is supported against the connecting frame, in particular until it is supported away from the functional component. Subsequently, the functional component prevents the frame from shifting relative to the connecting frame in the aforementioned plane, in particular in the direction of the transverse axis and the vertical axis, but allows the frame to be removed from the connecting frame in the direction of the longitudinal center axis. Thus, the functional component preferably fulfills a dual function, serving both to support the functional frame on the connecting frame and to hold the frame in place on the connecting frame. This ensures simple installation of the roof window and a comparatively simple design, allowing for cost-effective production.In addition, the fastening element or elements can of course be provided to further secure the frame and connecting frame to each other.

[0071] A further development of the invention provides that the frame is attached to the connecting frame by a mounting projection of the functional component arranged on the connecting frame engaging in a mounting pocket of the frame in a form-fitting manner. The functional component has the mounting projection, which, in particular, extends beyond the connecting frame in the direction of the frame, thus enabling a form-fitting connection of the frame to the connecting frame. To create the form-fitting connection, the frame has the mounting pocket, which is formed in the frame in the form of a recess, in particular a closed-edge recess, preferably a closed-edge pocket recess. A closed-edge recess is understood to be a recess which is completely and continuously bounded by an edge in an imaginary plane; in particular, the opening of the recess is bounded by a continuous edge.The pocket recess is a recess that does not extend completely through the frame, but has a bottom, so that the depth of the mounting pocket is less than the extent of the frame in the same direction.

[0072] The mounting pocket and the mounting projection are preferably designed such that, when the mounting projection is arranged in the mounting pocket, the frame is fixed relative to the connecting frame in at least one direction, in particular in the direction of the transverse axis or in the direction of the vertical axis. Of course, it is also possible for the frame to be fixed in both the transverse and vertical directions when the mounting projection is arranged in the mounting pocket.In particular, if this is not the case, i.e., if the engagement of the mounting projection in the mounting pocket secures the frame relative to the connecting frame in only one direction, the securing of the frame relative to the connecting frame is achieved in both the vertical and transverse directions by means of several functional components and correspondingly several mounting projections, each of which engages positively into several mounting pockets of the frame. The engagement of a first mounting projection in a first of the mounting pockets secures the frame relative to the connecting frame in one direction, and the engagement of a second mounting projection in a second of the mounting pockets secures it in the direction of the other axis, so that the frame is reliably held to the connecting frame overall. This ensures easy installation of the frame onto the connecting frame.

[0073] A further development of the invention provides that the mounting pocket extends through the base of a mounting groove formed on the frame, in which the connecting frame is at least partially received. The mounting groove is a recess formed on the frame into which the connecting frame partially engages. In particular, at least one of the connecting frame members engages in the mounting groove; more preferably, several or even all of the connecting frame members engage in the mounting groove. Preferably, the aforementioned corner connector(s) also engage in the mounting groove. Particularly preferably, after the frame has been positioned on the connecting frame, the mounting groove is completely and entirely filled by the connecting frame. This results in a particularly good seal for the roof window.

[0074] The mounting groove is bounded by its base in the direction away from the connecting frame. The depth of the mounting groove, particularly in the direction of the longitudinal center axis of the roof window or frame assembly, is less than the extent of the frame in the same direction; for example, it is at most 10%, 5%, or 2.5% of the frame's extent. Conversely, the depth of the mounting groove preferably corresponds to at least 2.5%, 5%, or 7.5% of the frame's extent in this direction. The mounting pocket is formed starting from the base of the groove, thus extending through it to create an opening. The mounting pocket extends from the base of the groove in the direction away from the mounting groove or the frame.The arrangement of the mounting pocket starting from the mounting groove, and in particular the partial arrangement of the connection frame in the mounting groove, enables, on the one hand, simple and quick installation and, on the other hand, the creation of a particularly tight and weatherproof connection between the frame and the connection frame.

[0075] A further development of the invention provides that, in cross-section, the mounting groove is bounded by two groove walls, and the connecting frame rests against at least one of the groove walls, preferably both. In cross-section, the groove walls are thus located on both sides of the mounting groove and define its boundaries. The groove walls are formed, in particular, by the frame, but preferably by different elements of the frame. When the connecting frame is arranged in the mounting groove, it preferably rests against at least one of the groove walls to achieve a tight connection. Particularly preferably, it rests against both groove walls, so that at least one of the connecting frame members, and in particular several or all of the connecting frame members, rest against the groove walls bounding the mounting groove on opposite sides. This, in turn, serves to create a particularly tight and weatherproof connection between the frame and the connecting frame.

[0076] A further development of the invention provides that the frame comprises a base frame and a cover frame arranged on the base frame, wherein the base frame and the cover frame each form one of the groove walls, so that the mounting groove, viewed in cross-section, is located between the base frame and the cover frame. The frame is thus designed in multiple parts and consists at least of the base frame and the cover frame. Preferably, the cover frame is a visible component of the roof window, so that after proper installation of the roof window, only the cover frame is visible from the interior and / or exterior, while the base frame is concealed by the cover frame and therefore not visible. The base frame preferably serves as a load-bearing component. It therefore has a higher strength and / or stiffness than the cover frame.

[0077] Preferably, the base frame is attached to the roof during installation of the frame assembly or the roof window, particularly directly, while the cover frame is only indirectly attached to the roof via the base frame. The cover frame serves to provide an attractive appearance for the roof window, especially when viewed from the interior, and / or to achieve good thermal insulation. It is particularly advantageous if the mounting groove is formed jointly by the base frame and the cover frame, with each frame forming one of the groove walls. In cross-section, the installation is thus bounded on one side by the base frame and on the other by the cover frame. Each frame forms one of the groove walls.With the connecting frame positioned in the mounting groove, the cross-sectional view shows, on the one hand, the groove walls formed by the base frame and, on the other hand, the groove walls formed by the cover frame. This allows for simple fabrication of the mounting groove on or in the frame and also limits the required material thickness of the base frame, since the mounting is not entirely contained within it, but is formed by the interaction of the base frame and cover frame.

[0078] A further development of the invention provides that a sealant is present in the mounting groove for a sealing connection between the frame and the connecting frame. The sealant is arranged continuously in the mounting groove, such that it completely surrounds the opening enclosed by the frame. In particular, the sealant completely and continuously surrounds the opening, i.e., without interruption. For example, an elastic or at least deformable sealant is used, which changes its shape when the connecting frame is inserted into the mounting groove in order to seal against the connecting frame. The sealant can, for example, be a gasket made of an elastic material, such as an elastomer, and is particularly in the form of a sealing ring or the like.However, a viscous sealant can also be used, which spreads or deforms when the connecting frame is inserted into the mounting groove, thereby ensuring a uniform and tight seal against the connecting frame. For example, the sealant consists of a polymer, particularly a synthetic rubber. Isobutene-isoprene rubber, also known as butyl rubber, is preferred. This design of the roof window or frame assembly ensures particularly good sealing and weather resistance of the frame assembly and, consequently, of the roof window.

[0079] A further development of the invention provides that at least one mounting bracket for attaching the roof window to a roof is attached to the frame, in particular the base frame. The final fixing of the frame to the roof is achieved using the mounting bracket. This bracket is attached to the frame, in particular directly. For example, it is screwed to the frame. Preferably, the mounting bracket engages the base frame, in particular directly, so that the cover frame is only indirectly connected to the mounting bracket via the base frame. Preferably, the mounting bracket is screwed to the frame, in particular the base frame. Preferably, the mounting bracket is designed and configured for screwing to the roof or the roof structure. The mounting bracket is preferably made of metal, in particular as a sheet metal forming component.This design of the roof window or frame arrangement allows for simple and reliable installation on the roof.

[0080] A further development of the invention provides that the mounting bracket is attached to several frame members of the window frame. The mounting bracket thus does not merely engage a single frame member, but is attached to several frame members simultaneously, in particular by screwing them in. For example, the mounting bracket encompasses two adjacent or connected frame members of the window frame, for instance at a corner of the window frame formed by the frame members, and is connected to them, in particular by screwing them in. This reinforces the connection between the frame members of the window frame. It is possible that the frame members of the window frame are held together solely by means of the mounting bracket.In this respect, it is possible to attach the frame members to each other solely using the mounting bracket, or to simply slot them together and then secure them using the mounting bracket. However, it is particularly preferred that the frame members are bonded together, especially by gluing, to achieve a particularly good seal. Overall, attaching the mounting bracket to the multiple frame members allows for a particularly stable design of the frame. IV. Functional frame components

[0081] A further development of the invention provides that the functional frame is composed of several functional frame parts, wherein at least one of the functional frame parts overlaps at least one other functional frame part. The functional frame is therefore not designed as a single piece, but rather as a multi-part structure and is accordingly composed of several functional frame parts. The functional frame parts are attached to one another to form the functional frame. Preferably, each of the functional frame parts is mounted separately or independently of the other functional frame parts so as to be displaceable on the connecting frame. In particular, at least one functional component is arranged on the connecting frame for each of the functional frame parts, and the functional frame part is connected to or mounted on the connecting frame by means of this component so as to be displaceable.This makes the functional frame easy to manufacture and allows it to be reliably repositioned on the connection frame.

[0082] It is possible for the functional frame components to butt against each other, i.e., to be flush with one another. However, this necessitates the provision of a particularly durable seal between the functional frame components to permanently prevent moisture from penetrating beneath the frame. For this reason, the functional frame components are designed to overlap, so that at least one functional frame component overlaps at least one other functional frame component. This overlapping arrangement of the functional frame components reliably ensures the drainage of any liquid that may be present on the functional frame components.

[0083] A further development of the invention provides that the at least one functional frame part is a functional frame transverse part and the at least one further functional frame part is a functional frame side part. The functional frame transverse part preferably extends substantially in the direction of the transverse axis, while the functional frame side part has at least one component in the direction of its greatest extent that extends in the direction of the vertical axis. The functional frame transverse part and the functional frame side part are thus angled relative to each other, for example, forming an angle of exactly or approximately 90°. In particular, if the functional frame transverse part is located above the functional frame side part in the direction of the vertical axis, or at least at an upper end of the functional frame side part, liquid that comes into contact with the functional frame is forced towards the functional frame side part due to the influence of gravity acting upon it.

[0084] Since the functional frame cross member overlaps the functional frame side member, liquid cannot penetrate between them at the transition and reach the underside of the functional frame. This reliably prevents liquid from penetrating the roof structure. It is particularly preferred that the functional frame cross member overlaps several functional frame side members, specifically on opposite sides. The functional frame side members are arranged on opposite sides of the connecting frame, and the functional frame cross member extends from the first functional frame side member to the second, overlapping both. This improves the weather resistance of the roof window and the frame assembly.

[0085] A further development of the invention provides that the functional frame cross member is U-shaped and overlaps several further functional frame parts, which are present as functional frame side members, on opposite sides. The functional frame cross member thus does not merely extend over the functional frame side members, but is U-shaped when viewed from above, i.e., in the direction of the longitudinal center axis, and therefore has a transverse leg and two side legs extending from the transverse leg on opposite sides. The transverse leg and the side legs are arranged on different sides of the connecting frame; in particular, the transverse leg runs parallel to a first functional frame member, one of the side legs runs parallel to a second connecting frame member, and another of the side legs runs parallel to a third connecting frame member.In particular, one side leg is arranged on the side of the third connecting frame member facing away from the second connecting frame member, and the other side leg is arranged on the side of the second connecting frame member facing away from the third connecting frame member. The two functional frame side sections extend beneath the side legs, specifically engaging under the side legs up to an edge of the functional frame cross member. This ensures particularly good weather resistance of the functional frame and consequently of the roof window or the frame assembly.

[0086] A further development of the invention provides that the functional frame side parts overlap a further functional frame cross part. This further functional frame cross part is located on the side of the connecting frame facing away from the functional frame cross part, in particular on the underside of the roof window or frame assembly, or in the direction of the vertical axis below the functional frame cross part. The functional frame side parts are arranged to overlap the further functional frame cross part, so that any liquid present on the functional frame cross part is reliably guided over the further functional frame cross part. The described design of the roof window or frame assembly enables a particularly high level of protection against the ingress of liquid into the roof or roof structure.

[0087] A further development of the invention provides that the functional frame side members, when viewed from above, run continuously straight or are at least approximately L-shaped. The top view is understood to be a view in the direction of the longitudinal center axis of the roof window, the frame assembly, or the frame itself. It can therefore be provided that the functional frame side members run exclusively parallel to the respective connecting frame member on which they are arranged and are accordingly spaced apart from another connecting frame member or members. In this case, the functional frame side members run continuously straight when viewed from above. However, it can also be provided that the functional frame side members, when viewed from above, have several legs and are designed with an L-shape for this purpose.One leg runs parallel to one of the connecting frame members, and another leg runs parallel to another connecting frame member, with the connecting frame members being angled relative to each other. In both versions of the functional frame side panels, reliable drainage of the fluid from the functional frame is ensured. V. Surface sealing

[0088] A further development of the invention provides that a surface seal is arranged on the functional frame for contact with the roof. The functional frame has a support surface which, after the intended installation of the roof window or the frame assembly or the roof window itself, rests against the roof, in particular against the roof structure, for example, the roof insulation. To prevent or at least reduce the penetration of moisture into the roof structure, the functional frame has the surface seal, which is arranged on the support surface.

[0089] The functional frame is sealed to the roof via the surface seal after installation, specifically by the surface seal lying flat against the roof or roof structure. In its relaxed state, i.e., before the roof window or frame assembly is installed on the roof, the surface seal preferably has dimensions along its longitudinal center axis that correspond at least to the dimensions of the sealing leg of the functional frame in the same direction. For example, the dimensions of the surface seal in this direction are at least 1 mm, at least 2 mm, or at least 4 mm.

[0090] The surface seal preferably completely and continuously surrounds the connecting frame, ensuring a particularly reliable seal of the roof against the external environment. Preferably, the surface seal fully overlaps the functional frame in the outward direction from the connecting frame; in particular, the entire sealing leg of the functional frame is covered on one side by the surface seal. The surface seal is preferably bonded to the functional frame, especially by adhesive bonding.

[0091] Additionally or alternatively, the surface seal is bonded to the roof on its roof-facing side. For example, it is designed to be self-adhesive on this roof-facing side. Preferably, the self-adhesive surface seal is covered before installation on the roof, for example with a protective film, which is removed from the surface seal during installation to expose the adhesive. This ensures a weatherproof connection of the roof window or frame assembly to the roof.

[0092] A further development of the invention provides that the surface seal consists of an elastic, closed-cell material. The elastic design of the surface seal material ensures reliable compensation for any irregularities in the roof. Thus, the surface seal guarantees a reliable and tight connection to the roof at all times. Since the material is closed-cell, moisture cannot diffuse through the surface seal. Consequently, moisture penetration into the roof via this route is prevented.

[0093] For example, a porous rubber is used as the material, the pores of which are completely or at least largely closed. Cellular rubber or sponge rubber, for instance, are used as the porous rubber. In any case, the material is an elastomeric foam, particularly made of natural rubber, acrylonitrile butadiene rubber, or synthetic rubber, such as ethylene propylene diene monomer (EPDM). Such a design of the roof window or frame assembly ensures a reliable and tight connection to the roof. VI. Frame insulation

[0094] A further development of the invention provides that a compressible frame insulation is connected to the window frame via the connecting frame. Preferably, the frame insulation is held to the window frame only via the connecting frame and otherwise simply rests against it. The frame insulation rests against the window frame of the roof window at least temporarily. This achieves excellent thermal insulation of the roof window, as the thermal insulation reduces heat loss through the connecting frame. The frame insulation preferably completely and continuously surrounds the connecting frame to achieve good thermal insulation. The frame insulation serves to provide a thermally insulating connection between the connecting frame and the window frame, as well as thermal insulation for the connecting frame itself.

[0095] A further development of the invention provides that the frame insulation is arranged on the functional frame and at least temporarily rests against the frame of the roof window. After the roof window or the frame assembly is installed on the roof, the frame insulation preferably rests permanently against the frame of the roof window. This means that it extends from the functional frame to the frame, so that it rests against both the functional frame and the frame, and thermally insulates the intervening areas of the connecting frame. The frame insulation preferably completely and continuously surrounds the connecting frame to achieve good thermal insulation. The frame insulation serves to provide a thermally insulating connection between the connecting frame and the frame, as well as thermal insulation for the connecting frame itself.

[0096] If frame insulation is provided in addition to a surface seal, they are arranged, in particular, on opposite sides of the functional frame, preferably on opposite sides of the sealing leg. The surface seal is located on one side of the sealing leg, and the frame insulation is located on the opposite side. The frame insulation has a greater extent, at least temporarily, in the direction of the longitudinal center axis of the roof window or frame assembly than the surface seal; in particular, its extent is greater by a factor of at least 5, at least 10, or at least 15 than that of the surface seal, especially when both the surface seal and the frame insulation are in their relaxed states. The frame insulation provides excellent thermal insulation for the roof window or frame assembly.

[0097] A further development of the invention provides that the frame insulation consists of an elastic, windproof material. The material of the frame insulation is elastic, allowing it to be compressible and thus exhibiting different extensions along its longitudinal axis. This enables it to adapt to different positions of the functional frame relative to the connecting frame and, consequently, the frame itself. Preferably, the frame insulation is designed such that, in every position of the functional frame relative to the connecting frame that occurs during the intended installation of the roof window or the frame assembly on the roof, it rests against both the functional frame and the frame itself, providing thermal insulation around the connecting frame. To achieve good insulation, the material is, for example, open-pored and, preferably, impregnated to ensure windproofness, or alternatively, closed-cell.It is preferably in the form of a foam, in particular an elastomeric foam. For example, the foam consists of polyurethane or the like. This design achieves good thermal insulation of the roof window or the frame assembly.

[0098] A further development of the invention provides that the frame insulation is compressed and spaced apart from the frame in a first state, and partially relaxed against the frame in a second state. The frame insulation can exist in several different states, namely at least in the first state and the second state. In the first state, the frame insulation is compressed and has smaller first dimensions along the longitudinal center axis against the functional frame. In the second state, the frame insulation is partially or completely relaxed and has larger second dimensions along the longitudinal center axis. Preferably, the frame insulation is held in the first state before installation, so that it requires little space and / or is protected from damage during transport of the roof window or frame assembly prior to installation.

[0099] During installation, the frame insulation is subsequently partially relaxed so that it rests against the frame, thus providing thermal insulation for the roof window and the frame assembly. In its initial state, where the frame insulation is spaced apart from the frame, it is preferably connected to the frame solely via the connecting frame, and in particular, held in place by the frame. In its second state, it remains connected to the frame via the connecting frame but also rests directly against the frame. This design allows for both a space-saving arrangement of the frame insulation and effective thermal insulation of the roof window and the frame assembly.

[0100] A further development of the invention provides that the frame insulation is held in the first state by a sleeve, which is particularly connected to the connecting frame and / or arranged on the functional frame. This sleeve has smaller dimensions than the guide leg and, when the sleeve is opened, assumes the second state. The frame insulation is thus contained within the sleeve, which is initially closed. Accordingly, the frame insulation is held in its compressed first state, in which it requires minimal space. Preferably, in the first state, the frame insulation has an extension in the direction of the longitudinal center axis that is smaller than the extension of the guide leg, so that the frame insulation is mechanically protected by the guide leg.

[0101] The casing is preferably connected to the connecting frame and / or arranged on the functional frame, in particular attached to it. For example, the casing is bonded to the functional frame by a material bond. It can be provided that the casing completely encloses the frame insulation, so that the frame insulation arranged within the casing is positioned on the functional frame, with the casing being attached to the frame insulation on one side and to the functional frame on the other. The frame insulation is thus attached to the functional frame via the casing, for example, exclusively. During the installation of the roof window or the frame assembly on the roof, the casing is opened, allowing the frame insulation to partially relax and increase its dimensions in the direction of the longitudinal center axis, in particular until it rests against the frame.The described design of the roof window or frame arrangement implements the aforementioned advantages in a structurally simple way.

[0102] A further development of the invention provides that the casing is made of paper, in particular coated paper. The use of paper allows for a particularly cost-effective implementation of the casing, which can also be easily opened to relieve the pressure on the frame insulation. The coating is preferably used to make the paper moisture-resistant.

[0103] A further development of the invention provides that the casing has a predetermined tear line along which it opens to release the frame insulation under mechanical stress. The predetermined tear line is designed on the casing to allow for quick and controlled opening to release the frame insulation. The predetermined tear line can be designed in any way; in particular, means for subjecting the casing to mechanical stress and / or a mechanical weakening of the casing can run along the predetermined tear line so that it reliably tears open along the predetermined tear line when subjected to mechanical stress. The use of the predetermined tear line enables controlled and targeted release of the frame insulation during the installation of the roof window or the frame assembly by opening the casing.

[0104] A further development of the invention provides that the intended tear line is located between two sections of the casing, which are fastened together by a connecting element having a lower strength than the casing itself. The casing thus comprises two sections that face each other along the intended tear line, and in particular, are in contact with each other. The two sections are fastened together by the connecting element, for example, an adhesive tape, which holds the two sections together along the intended tear line. The connecting element is designed such that it tears under a lower mechanical stress than the casing itself, thus ensuring reliable opening of the casing along the intended tear line when mechanical stress is applied.

[0105] A further development of the invention provides that the intended tear line is defined by a tearing device designed and configured for opening the casing, which is arranged inside the casing and connected to a tearing device control element located outside the casing. The tearing device runs, for example, along the intended tear line and is arranged inside the casing so that, when the tearing device is subjected to mechanical stress, in particular when it is pulled out of the casing, the casing tears open along the intended tear line. The tearing device is particularly in the form of a tear strip. The tearing device is connected to the tearing control element, which is located outside the casing and is designed and configured for applying the mechanical stress.The tear-off device control element is, for example, in the form of a thickening of the tear strip, or it is attached to the tear-off device as an additional part. The tear-off device allows the casing to be easily opened during assembly.

[0106] A further development of the invention provides that, in the second state, the frame insulation rests against a rear surface of the frame, particularly the rear surface facing the functional frame, specifically the base frame of the frame. The rear surface of the frame faces the functional frame. In particular, it completely and continuously surrounds the entire opening enclosed by the frame, so that the frame insulation also rests continuously against the frame, i.e., across the entire rear surface.

[0107] The rear surface of the frame can be narrower than the frame insulation, so that after installation the frame insulation projects laterally beyond the frame, i.e., in a plane perpendicular to the longitudinal center axis. The rear surface preferably lies against the base frame of the frame, preferably spaced apart from the cover frame. For example, it lies against the mounting groove and is formed by the frame members. Preferably, the rear surface of the frame lies continuously in an imaginary plane that is aligned parallel to another imaginary plane that continuously accommodates the functional frame.

[0108] A further development of the invention provides that, in the second state, the frame insulation rests against a frame insulation element located in an insulation element receptacle of the frame, which is bounded on opposite sides by the frame, in particular the base frame. Consequently, the frame is not constructed of a single material, but rather it has the frame insulation element, which is made of a different material than the rest of the frame, in particular the rest of the base frame. The frame insulation element is arranged in the insulation element receptacle, which—optionally or only if the frame insulation element is present—is formed in the frame, preferably the base frame. The insulation element receptacle is formed as a recess in the frame or the base frame and is thus bounded by it on opposite sides.

[0109] For example, the insulation element recess extends completely through the frame or base frame in one direction, while in a direction perpendicular to this, it is limited on opposite sides. The insulation element recess is preferably completely filled by the frame insulation element, which has dimensions corresponding to those of the insulation element recess. The frame insulation element improves the thermal insulation of the frame itself. To further improve the thermal insulation, the frame insulation is positioned against the frame insulation element after the roof window or frame assembly is installed. Preferably, the frame insulation element is made of a polymer foam, but more preferably of a material different from that of the frame insulation.Overall, the roof window and the described frame arrangement achieve particularly good thermal insulation.

[0110] A further development of the invention provides that the frame insulation is flush with a side wall of the frame, in particular flush with the frame all the way around. The frame insulation has dimensions in the direction away from the connecting frame such that it does not protrude beyond the frame or its side wall. The side wall of the frame is understood to be, in particular, a wall located on the side of the frame facing away from the opening it encloses. Preferably, the frame insulation is flush with the frame all the way around, i.e., over its entire circumference. This facilitates easy installation and prevents damage to the frame insulation during installation.

[0111] A further development of the invention provides that the frame insulation is arranged on the side of the guide leg facing away from the connecting frame members, and in particular overlaps the guide leg. The guide leg forms part of the functional frame and, in particular, runs parallel to the connecting frame member nearest to it. It serves to guide the functional frame during displacement relative to the connecting frame. The frame insulation is arranged on the sealing leg, namely on the outside, i.e., on the side of the guide leg facing away from the connecting frame. Preferably, in the first state, the frame insulation has smaller dimensions in the direction of the longitudinal center axis than the guide leg.

[0112] In the second state, however, the frame insulation overlaps the guide leg, thus having a greater extent. At least its extent is identical to that of the guide leg, namely if, after the installation of the roof window or the frame assembly, the guide leg rests against the frame. With the described design, any impairment of the frame insulation during relocation of the functional frame relative to the connecting frame is reliably prevented. To guide the frame insulation during its expansion and / or for better protection during transport, the frame insulation can be positioned between the guide leg and an outer leg that runs parallel to the guide leg. For example, the guide leg and the outer leg extend from the sealing leg on opposite sides.In the first state, the frame insulation is preferably arranged completely in a sealing recess formed between the guide leg and the outer leg; in the second state, it protrudes from this recess towards the frame.

[0113] A further development of the invention provides that the frame insulation covers at least one functional component. The functional component is located on or within the connecting frame member of the connecting frame and is attached there. To prevent the formation of a thermal bridge across the functional component, the frame insulation overlaps the functional component at least partially, namely insofar as it lies between the functional frame and the frame when viewed along the longitudinal center axis. This achieves excellent thermal insulation.

[0114] A further development of the invention provides that one of the groove walls extends from the rear surface. One of the groove walls defining the mounting groove thus connects directly to the rear surface against which the frame insulation rests, at least after the installation of the roof window or the frame assembly. This means that the frame insulation extends right up to the mounting groove, thus achieving good thermal insulation. VII. Frame consisting of base frame and cover frame

[0115] A further development of the invention provides that the base frame is made of wood or at least contains wood, and / or that the cover frame is made of plastic or at least contains plastic, in particular in the form of a hollow plastic profile. The base frame is preferably made of solid wood. However, it can also be made of a wood-containing composite material, i.e., ultimately a wood-based material. For example, a solid wood material, a wood-chip material, a wood-fiber material, or the like can be used as a wood-based material. The term "solid wood material" refers in particular to a wood-based material made of solid wood, for example, plywood.

[0116] Additionally or alternatively, the cover frame is made of plastic or at least incorporates it. In particular, a thermoset or thermoplastic is used. Preferably, the cover frame is designed as a hollow plastic profile, meaning it has several air-filled chambers separated from each other by webs manufactured within the cover frame. This achieves particularly good thermal insulation of the frame. The hollow plastic profile is specifically designed as a multi-chamber plastic profile or a multi-chamber polymer profile.

[0117] A further development of the invention provides that the cover frame extends at least partially, and in particular completely, through the base frame. The base frame extending through the cover frame is provided, in particular, in the direction of the longitudinal center axis of the roof window or the frame assembly. The base frame extends through the opening defined by the cover frame and penetrates it completely or at least almost completely in the direction of the longitudinal center axis. This ensures that the thermal insulation provided by the cover frame is present across the entire frame.

[0118] A further development of the invention provides that the cover frame rests on a front surface of the base frame facing away from the connecting frame and extends along an inner surface of the base frame towards the connecting frame to form the mounting groove. The front surface of the base frame is to be understood in particular as a side of the base frame facing the external environment, whereas the inner surface faces the opening bounded by the trim frame. The front surface and the inner surface preferably adjoin each other directly and are angled relative to each other, thus forming an angle greater than 0° and less than 180°. Particularly preferably, the front surface and the inner surface are arranged at an angle of 90° to each other.

[0119] The cover frame is supported against the front surface and extends along the inner surface towards the connecting frame. Preferably, it also rests against the inner surface, thus being supported by it. The cover frame extends through the opening of the base frame or trim frame to form the mounting groove, which is located on the side of the base frame facing away from the front surface. This achieves the aforementioned advantages with a simple design and cost-effective manufacturing of the roof window or frame assembly.

[0120] A further development of the invention provides that the cover frame has a first cover frame leg and a second cover frame leg angled relative to the first cover frame leg, wherein the first cover frame leg forms one of the groove walls for defining the mounting groove and the second cover frame leg rests on the front surface of the base frame. In cross-section, the cover frame is thus composed of several legs, namely at least the first cover frame leg and the second cover frame leg. The two cover frame legs are angled relative to each other, thus forming an angle greater than 0° and less than 180°. Preferably, the cover frame legs are angled relative to each other at approximately 90°. The cover frame leg runs along the inner surface of the base frame, thus extending through the opening of the frame to form the mounting groove.The second cover frame leg, however, rests on the front surface of the base frame and is supported by it. The aforementioned advantages are achieved with this design as well.

[0121] A further development of the invention provides that a third cover frame leg extends from the second cover frame leg, is angled relative to the second cover frame leg, and extends from the base frame away from the latter. The third cover frame leg is thus arranged on the side of the second cover frame leg facing away from the first cover frame leg. In particular, the first cover frame leg and the third cover frame leg are arranged parallel to each other and, viewed in cross-section, extend from opposite ends of the second cover frame leg in opposite directions: the first cover frame leg through the base frame and the third cover frame leg away from the base frame.The third leg of the cover frame serves in particular to achieve good weather resistance of the roof window or the frame arrangement by connecting a flashing sheet to the frame arrangement or to the roof window.

[0122] A further development of the invention provides that the first and / or the third cover frame leg each have a hollow profile. This means that the first and / or the third cover frame leg are not solid, but rather made with a hollow profile. Preferably, the hollow profile is an extruded profile. The second cover frame leg, on the other hand, is preferably solid and particularly preferably has a thinner material thickness compared to the first and third cover frame legs. This also achieves the advantages already mentioned.

[0123] A further development of the invention provides that a sealing projection extends from the cover frame, in particular from the third cover frame leg, which overlaps a flashing of the roof window to form a labyrinth seal. The sealing projection is, for example, integrally formed with the cover frame and made of the same material. However, it can also be positively attached to the cover frame, in particular by engaging in a fastening groove. The sealing projection extends outwards from the cover frame, i.e., in the direction away from the frame, and preferably overlaps one or more of the mounting legs in certain areas. The sealing projection is designed with a chamfer which, when the roof window or frame assembly is installed on the roof as intended, faces the roof.The bend is engaged by the flashing, creating a labyrinth seal and reliably preventing liquid from penetrating the roof.

[0124] A further development of the invention provides that the cover frame has a cavity which is closed by a removable cover. The cavity is formed, for example, by the hollow profile, so that one or more of the air chambers of the hollow profile constitute the cavity. When the cover is installed, the cavity is closed and therefore inaccessible. When the cover is removed, however, the cavity is open and accessible. The cavity serves, for example, as a cable duct or for the installation of an electrical or electronic device. Preferably, the cover is positively attached to the cover frame. It can be removed from the cover frame without damage and reversibly reattached to it. VIII. Roof window

[0125] The invention further relates to a roof window with a frame arrangement as described in this description, wherein the frame arrangement comprises a frame, a connecting frame separately configured from and attached to the frame, and a functional frame, wherein the functional frame surrounds the connecting frame and is displaceable relative to the connecting frame along a straight line perpendicular to a frame plane spanned by the frame, wherein a functional component of the connecting frame has a guide device by means of which the functional frame is displaceably mounted on the connecting frame. It is provided that the guide device has a guide receptacle into which a guide projection of the functional frame engages in a form-fitting manner.

[0126] The advantages of this type of roof window design and frame arrangement have already been mentioned. Both the roof window and the frame arrangement can be further developed as described in this document, and reference is made to those details. IX. Assembly methods

[0127] Furthermore, a method for mounting a roof window on a roof, in particular a roof window as described herein, is disclosed, wherein the roof window has a frame assembly. It is provided that the roof window has a connecting frame, which is designed separately from and attached to a frame of the frame assembly, wherein a functional frame surrounds the connecting frame and is displaced relative to the connecting frame along a plane perpendicular to a frame plane spanned by the frame.

[0128] Reference is again made to the explanations in this description regarding the advantages and possible beneficial further development. Both the roof window and the method for its installation can be designed and further developed in accordance with this description.

[0129] A further development of the invention provides that at least one of the following steps is carried out for assembly: - The connecting frame is produced by joining several frame members, in particular using one or more corner connectors; - the functional frame is arranged to encompass the connecting frame, in particular it is mounted so that it can be moved around the connecting frame; - a roof opening is provided or made in the roof; - a frame insulation arranged on the functional frame is brought from a compressed first state into a partially relaxed second state; - the frame is attached to the connecting frame, in particular by engaging a mounting projection on a functional component of the connecting frame in a mounting pocket of the frame; - the frame is arranged on the roof together with the connecting frame, in particular the functional frame is placed on the roof; - when arranging the frame and the connecting frame on the roof, the functional frame or a surface seal present on the functional frame is placed against the roof; - if the functional frame is adjacent to the roof or if the surface seal is adjacent to the roof, the frame and the connecting frame are moved perpendicular to the frame plane until a mounting position of the frame is reached; - In the mounting position of the frame, at least one mounting bracket attached to the frame is used to attach the roof window to the roof; - the connecting frame is arranged in such a way that, after the frame is attached to the roof, the functional frame is pressed against the roof by a spring arrangement; - a roof waterproofing membrane, in particular an underlayment and / or a vapor barrier, is attached to the connection frame; and - An interior lining of the roof window, in particular an interior lining adjacent to the frame, is attached to the connecting frame.

[0130] At least one of the steps mentioned is carried out, but preferably several or all of them. This is preferably done in the order in which the steps are listed; however, a different order is also possible. X. Roof window arrangement

[0131] A roof window arrangement with multiple roof windows, in particular roof windows as described herein, is further disclosed, wherein each roof window has a frame arrangement. It is provided that the frames of the frame arrangements abut one another and have solid base frames as well as cover frames attached to the base frames, wherein the base frames have recesses facing each other into which a load-bearing element engages without being fastened, for the load-bearing connection of the roof windows.

[0132] Each roof window is manufactured according to the specifications for roof windows. Reference is made to the explanations in this description. Ideally, the roof windows are identical in design.

[0133] The roof window assembly can be an integral part of the building, but it can also exist separately, particularly until the assembly is installed on the building or its roof. The building has a roof, on which the roof window assembly is designed and installed. The roof window assembly comprises several roof windows. Preferably, the roof windows of the assembly are designed to completely close the aforementioned roof opening, at least temporarily. For this purpose, the roof windows are arranged in a corresponding manner.

[0134] Insofar as this description refers to one or more roof windows, the statements are preferably applicable to multiple roof windows, and in particular to each of them. The roof windows may – optionally – be designed according to the specifications in this description. For details regarding the design of the roof windows and possible advantageous further developments, please refer to the relevant documentation.

[0135] The frames of the roof windows consist of solid base frames and cover frames, which are attached to the base frames. Each roof window, or each frame assembly, therefore has one base frame and one cover frame, with the cover frame being attached to the base frame. The frames are thus multi-part and each comprises at least the base frame and the cover frame. Preferably, the cover frame is a visible component of the roof window, so that after proper installation of the roof windows or roof window assembly, only the cover frames are visible from the interior and / or exterior, while the base frames are concealed by the cover frames and therefore not visible. The base frames preferably serve as load-bearing components. They therefore possess greater strength and / or stiffness than the cover frames.

[0136] Preferably, the base frame is attached to the roof during installation of the roof window assembly or the roof window itself, particularly directly, while the cover frame is only indirectly attached to the roof via the base frame. The cover frame serves to provide an attractive appearance for the roof window, especially when viewed from the interior, and / or to achieve good thermal insulation. In any case, the base frame is solid, meaning it consists of a single piece of material and is not a hollow profile. The cover frame, on the other hand, can be designed as desired.

[0137] For example, the base frame is made of wood or at least contains wood. Preferably, the base frame is made of solid wood. However, it can also be made of a wood-containing composite material, i.e., ultimately a wood-based material. Examples of wood-based materials include solid wood composites, wood-chip composites, wood-fiber composites, or the like. Solid wood composites, in particular, refer to wood-based materials made of solid wood, such as plywood. Additionally or alternatively, the cover frame is made of plastic or at least contains plastic. In particular, a thermoset or thermoplastic is used. Preferably, the cover frame is designed as a hollow plastic profile, i.e., it has several air-filled chambers separated from each other by webs manufactured within the cover frame. This achieves particularly good thermal insulation of the frame.

[0138] For mounting roof windows as part of a roof window arrangement, one or more connecting rafters can be used, positioned between the roof windows. In this method, the roof windows are connected or fastened to each other via the connecting rafters. The connecting rafters are then attached to the roof or roof structure, ensuring that the load-bearing capacity of the roof structure in the area of ​​the roof window arrangement is not reduced. However, the use of connecting rafters results in adjacent roof windows being spaced apart from each other, due to the rafters positioned between them. This creates a visual break between the roof windows, particularly between the light surfaces they provide.

[0139] Solutions already exist for reducing the distance between roof windows. However, these solutions all require at least one additional component, which must be purchased separately. Both the use of the connecting rafter and the additional component increase the cost for the end customer of the roof window installation and the installation effort for the installer. Furthermore, as explained, the connecting rafter restricts the light area of ​​the roof windows and creates a visual break between them.

[0140] For this reason, it is proposed that mutually facing recesses be produced in the base frame, into which the load-bearing element for the load-bearing connection of the roof windows engages without being fastened. The recesses are preferably already present at the factory, i.e., they are produced in the base frame during the manufacture of the roof windows or roof window assembly, particularly before the roof windows are transported to an installation site where the roof window assembly is mounted to the building. The recesses are produced regardless of whether the respective roof window is used as part of the roof window assembly or separately as an individual window.

[0141] The recesses are formed in the solid base frames and face each other. The first recess is located in the first base frame, specifically on its side facing the second base frame. The second recess is located in the second base frame, specifically on its side facing the first base frame. The recesses are aligned, so that when the roof windows are installed as intended, and especially when the base frames are aligned, the load-bearing element engages in both the first and second recesses.

[0142] The load-bearing element engages in the recesses without being fixed. This means that it is not positively connected to the base frames along its longitudinal axis, but rather serves exclusively, or at least primarily, to create the load-bearing connection between the roof windows. The load-bearing connection is understood to be a connection between the roof windows or the base frames that absorbs a force acting between the roof windows solely, or at least predominantly, perpendicular to the longitudinal axis of the load-bearing element, and not, or at least only secondarily, in the direction of the longitudinal axis.

[0143] In other words, the base frames are held together by the load-bearing element solely or primarily in the radial direction with respect to the longitudinal center axis of the load-bearing element, but not, or at most only secondarily, in the axial direction. Of course, to increase safety, it may be possible to secure the load-bearing element in the recesses, for example, by means of a material-fit connection to one or both of the base frames. It may also be possible for the recesses to have a total depth corresponding to the length of the load-bearing element along its longitudinal center axis.In this case, the load transfer element rests in the axial direction with respect to its longitudinal center axis against a base of the first recess on one side and against a base of the second recess on the other, so that the load transfer element itself, even when in contact with each other, holds the frame of the roof windows in the recesses in a form-fitting manner in the axial direction.

[0144] The unsecured engagement of the load-bearing element in the recesses preferably means that the strength of the connection between the base frames or the roof windows created by the load-bearing element is greater in the radial direction than in the axial direction, in particular by a factor of at least 5, at least 10, or at least 25. The unsecured engagement of the load-bearing element in the recesses also means, or alternatively, that the base frames are arranged without axial tension relative to each other with respect to their longitudinal center axis by means of the load-bearing element. The load-bearing element thus does not serve to force the base frames back against each other in the axial direction or to hold them together in the axial direction. Rather, the holding effect is significantly greater in the radial direction than in the axial direction.For example, when the load-bearing element engages in the recesses, the roof windows are only fixed relative to each other in the axial direction after they have been attached to the roof, but not before they have been attached to the roof.

[0145] It is possible for the roof windows to be connected to each other by means of a single load-bearing element. Preferably, however, several load-bearing elements are provided, connecting directly adjacent roof windows to one another. The load-bearing elements are, for example, arranged at regular intervals on the base frame and engage in the corresponding recesses without being fastened. The load-bearing element is, for example, a dowel, pin, or the like. In any case, it is preferably cylindrical, in particular a straight cylinder, especially a straight circular cylinder. This ensures that it can be easily inserted into the recess by simply pushing it in. Due to the robust design of the base frames, the load-bearing element is held securely and without tilting within them.Preferably, the load-bearing element extends into each of the base frames over a distance that is at least equal to its diameter, i.e., its dimensions in the radial direction. Preferably, this distance is larger than its diameter by a factor of at least 2.5, at least 5, or at least 10. This reliably prevents the roof windows from tilting relative to each other.

[0146] The described design of the roof window arrangement allows for the installation of multiple roof windows on the roof with minimal effort, particularly without connecting rafters or additional special parts. Instead, the roof windows can be coupled together using simple means that are often already available on a construction site or can be supplied along with the windows due to their low cost. At the same time, a high degree of stability is achieved in the roof window arrangement, meaning that the load-bearing capacity of the roof is not compromised.

[0147] A further development of the invention provides that the recesses have openings on their facing sides through which the load-bearing element projects into the recesses, with at least one of the recesses being closed on the side opposite the respective opening. Each of the recesses thus extends through a side surface of the respective base frame, forming the corresponding opening. The load-bearing element engages in the corresponding recess through this opening. At least one of the recesses is closed on the side opposite the opening, for example by the base frame itself by forming a bottom of the opening or by an element separate from the base frame, in particular by the cover frame.This simplifies the positioning of the load-bearing element during the installation of the roof window assembly, as, for example, the load-bearing element only needs to be inserted into the recess until it rests against the element closing the recess. With this design, incorrect positioning of the load-bearing element is reliably prevented.

[0148] A further development of the invention provides that the recess is closed on the side facing away from the respective opening by means of a sack recess. A sack recess is understood to be a recess that only partially penetrates the base frame in the axial direction, such that it has the opening on one side and a bottom on the opposite side, which defines its boundaries. The bottom is formed by the base frame itself. Preferably, the sack recess is manufactured as a blind bore. This represents a particularly simple design for the recess.

[0149] A further development of the invention provides that the recess is closed on the side facing away from the respective opening of one of the cover frames. In such a configuration, the recess preferably extends completely through the base frame, thus having the opening on one side and a further opening on the other, the latter being formed by a further side surface of the base frame extending through the recess. The further opening is covered by the cover frame, so that the recess is covered or closed by the cover frame on the side opposite the opening. Such a configuration of the recess is also easy to manufacture and serves to achieve the advantages already mentioned.

[0150] A further development of the invention provides that the cover frames of the window frames abut each other. This means that either the cover frames or both the base frames and the cover frames abut each other, particularly in a common imaginary plane. This results in a pleasing appearance of the roof window arrangement.

[0151] A further development of the invention provides that the load-bearing element interacts with the walls defining the recesses in a form-fitting manner perpendicular to its longitudinal center axis to form the load-bearing connection of the roof windows. For this purpose, the load-bearing element is, for example, simply inserted into the recesses so that it exerts no or only a minimal holding force on the roof windows in the axial direction with respect to its longitudinal center axis. This minimal holding force is, of course, achieved by a frictional engagement of the load-bearing element with the walls defining the recesses. For example, the load-bearing element is pressed into the recesses, i.e., it is designed with a transition fit or interference fit relative to them.

[0152] The holding force of the load-bearing element in the axial direction can be increased by bonding it to at least one of the recesses. However, the holding force in the axial direction is always less than that in the radial direction, and conversely, the holding force in the radial direction is always greater than that in the axial direction, in particular by a factor of at least 2.5, at least 5, or at least 10. This ensures the simple and cost-effective manufacture of the roof window assembly as well as its simple and rapid installation.

[0153] A further development of the invention provides that an additional load-bearing element engages in the frame for the load-bearing connection of the roof windows. This additional load-bearing element is preferably a different element than the primary load-bearing element. It can be provided that, unlike the primary load-bearing element, the additional load-bearing element is designed and configured for the positive locking of the base frames to one another in the axial direction. Thus, unlike the primary load-bearing element, it does not merely or even predominantly have a holding effect in the radial direction, but actually holds the frames together or presses them towards each other. This results in a particularly reliable and durable connection between the roof windows.

[0154] A further development of the invention provides that the additional load-bearing element has a greater extent in the direction of its longitudinal central axis than the load-bearing element. The additional load-bearing element thus extends further axially through the base frames than the load-bearing element, so that correspondingly, further recesses in the base frames have at least the same dimensions in the axial direction, and preferably larger dimensions, than the recesses. For example, the further recesses extend completely through the base frame. This enables even greater strength of the roof window assembly, in particular by means of the additional load-bearing element pressing the base frames together or clamping them together in the axial direction.

[0155] A further development of the invention provides that the load-bearing element extends only partially through at least one of the base frames, and / or that the additional load-bearing element extends completely through at least one of the base frames. Such a configuration has already been mentioned in principle. Preferably, the load-bearing element extends only partially through both base frames, whereas the additional load-bearing element preferably extends completely through both base frames. Particularly in combination, the load-bearing element and the additional load-bearing element hold the roof windows together very reliably to establish the load-bearing connection.

[0156] A further development of the invention provides that the load-bearing element and the additional load-bearing element are made of different materials. Preferably, the materials are selected such that the additional load-bearing element has a higher axial strength than the load-bearing element. The load-bearing element is thus designed to create the load-bearing connection between the roof windows, whereas the additional load-bearing element is also designed to hold the roof windows together axially. With such a design, the aforementioned advantages are reliably achieved.

[0157] A further development of the invention provides that the load-bearing element and the base frame consist at least partially of materials of the same type. "Same type of material" means that the load-bearing element and the base frame are at least partially made of the same material, in particular that both consist at least partially of the same material. Preferably, the load-bearing element and the base frame are both at least partially made of wood, in particular solid wood, wood-based composite material, or wood-based material. For example, the load-bearing element is made of solid wood and the base frame is also made of solid wood or wood-based material. This enables a cost-effective production of the roof window assembly.

[0158] A further development of the invention provides that the load-bearing element is designed as a pin and / or the additional load-bearing element as a screw. The pin preferably has a consistently constant cross-section along its longitudinal axis, allowing it to be easily inserted into the recess and enabling unsecured engagement. The screw has a screw head that rests against one of the base frames, specifically on the side surface facing away from the respective opening. The screw is attached to the other base frame by means of a nut, which is screwed onto the screw. The nut, in turn, rests against the side surface of the base frame facing away from the opening. The screw thus holds the frames together axially or even presses them together axially.This type of roof window arrangement achieves the aforementioned advantages.

[0159] A further development of the invention provides that the load-bearing element and the additional load-bearing element are arranged in the same cross-sectional area. This means that the two load-bearing elements are positioned in the base frame such that they, or rather their longitudinal center axes, lie in an imaginary plane that perpendicularly intersects a frame member of the base frame. This results in a particularly high rigidity of the roof window assembly.

[0160] A further development of the invention provides that the base frames have frame insulation elements arranged on opposing sides of the base frames and penetrated by the recesses. The frame is therefore not made of a single material, but rather it has the frame insulation element, which is made of a different material than the rest of the frame, in particular the rest of the base frame. The frame insulation element is arranged in an optional insulation element receptacle formed in the frame, preferably the base frame. The insulation element receptacle is formed as a recess in the frame or the base frame and is thus bounded by it on opposite sides.

[0161] For example, the insulation element recess extends completely through the frame or base frame in one direction, while in a direction perpendicular to this, it is limited on opposite sides. The insulation element recess is preferably completely filled by the frame insulation element, which has dimensions corresponding to those of the insulation element recess. The frame insulation element improves the thermal insulation of the frame itself. Preferably, the frame insulation element consists of a polymer foam. The frame insulation elements are penetrated by the recesses; thus, one of the frame insulation elements has a first recess, and a second of the frame insulation elements has a second recess. After the roof window assembly is installed, the load-bearing element consequently also extends through the frame insulation elements.The described design enables particularly good thermal insulation of the roof windows, depending on the roof window arrangement.

[0162] A further development of the invention provides that the base frames together have a thickness corresponding to that of a roof rafter. After the roof window assembly is mounted on the roof, the base frames thus jointly replace or supplement one of the roof rafters by forming the aforementioned connecting rafter. The invention also relates accordingly to a roof with a roof window assembly, in particular a roof window assembly as described in this document, wherein the roof has several rafters and the base frames of the roof windows of the roof window assembly jointly have a thickness corresponding to that of the rafter, with the window frames abutting one another. This results in a particularly high load-bearing capacity of the roof.

[0163] The invention further relates to a method for mounting a roof window assembly on a roof, in particular a roof window assembly as described in this description, wherein the roof window assembly comprises several roof windows, each of which has a frame assembly. It is provided that the frames of the frame assemblies are arranged abutting one another and have solid base frames as well as cover frames arranged on the base frames, wherein mutually facing recesses are provided in the base frames into which a load-bearing element for the load-bearing connection of the roof windows is arranged to engage without being fastened.

[0164] The advantages of this type of roof window design and procedure have already been discussed. Both the roof window design and the installation method may be further developed as described in this document, and reference is made to those details. XI. Brief description of the characters

[0165] The features and combinations of features described in the description, in particular those described in the following figure description and / or shown in the figures, can be used not only in the combinations specified, but also in other combinations or individually, without departing from the scope of the invention. Thus, embodiments that are not explicitly shown or explained in the description and / or the figures, but which emerge from or can be derived from the explained embodiments, are also to be considered as encompassed by the invention.

[0166] The invention is explained in more detail below with reference to the exemplary embodiments shown in the drawing, without limiting the invention. The drawing shows: Fig. 1 A schematic representation of part of a roof window with a frame, a connecting frame and a functional frame, Fig. 2 a schematic representation of the connection frame and the functional frame in a first view, Fig. 3 a schematic representation of the connection frame and the functional frame in a second view, Fig. 4 a schematic representation of the frame, Fig. 5 a schematic representation of the connection frame and the functional frame in a third view, Fig. 6 a schematic sectional view through the connection frame and the functional frame, Fig. 7 a schematic sectional view of a cover frame of the frame, Fig. 8 A schematic representation of a roof with the roof window attached to it during a first assembly step, Fig. 9 the schematic representation of the roof during a second assembly step, Fig. 10 the schematic representation of the roof during a third assembly step, as well as Fig. 11 a schematic representation of a roof window arrangement with several roof windows. XII. Character description

[0167] The Fig. Figure 1 shows a schematic representation of a roof window 1, which has a frame assembly 2. The frame assembly 2 has a frame 3, which comprises at least a base frame 4 and a cover frame 5. In addition to the frame 3, a connecting frame 6 and a functional frame 7 are components of the frame assembly 2. The frame 3 spans a frame plane, or frame center plane, in which a vertical axis 8 and a transverse axis 9 of the roof window 1 lie. The vertical axis 8 and the transverse axis 9 are perpendicular to each other. A longitudinal center axis 10 is perpendicular to the vertical axis 8 and the transverse axis 9 and runs centrally through the frame 3.It should be noted that the roof window 1 shown is merely a model of an actual roof window and accordingly has dimensions and dimensional ratios that do not necessarily correspond to the actual roof window, but of course can.

[0168] The frame 3 has frame members 11, which together enclose a frame opening 12. The vertical axis 8 and the transverse axis 9 are each preferably perpendicular to two of the frame members 11. Each frame member 11 consists of a base frame member 13 of the base frame 4 and a support frame member 14 of the cover frame member 5, whereby only a portion of the cover frame members 14 is shown, and these portions are only partially and partially cut off. Similarly, the connecting frame 6 has several connecting frame members 15 and the functional frame 7 has several functional frame members 16, which are only partially visible here, but are mostly obscured. The base frame members 13 are attached directly to one another, in particular, they abut directly against each other.

[0169] At each corner of the frame 3, two of the base frame members 13 are provided with a mounting bracket 17. Each mounting bracket 17 is thus attached to two of the base frame members 13, in particular by screws. The mounting brackets 17 serve to attach the frame 3 to the roof of a building. At least some of the base frame members 13, but preferably all of them, are provided with a frame insulation element 18, which is arranged in an insulation element receptacle 19 of the base frame 4. The insulation element receptacle 19 is bounded on opposite sides by the respective base frame member 13. Of course, the base frame members 13 can also be designed without a frame insulation element 18 and, in this case, without the insulation element receptacle 19. It can be seen that the base frame 4 and the base frame members 13 are made of wood, in particular solid wood.The cover frame 5, on the other hand, is made of a plastic, preferably it is designed at least partially as a hollow plastic profile.

[0170] The cover frame 5 rests on a front surface 20 of the base frame 4 facing away from the connecting frame 6 and extends along an inner surface 21 of the base frame 4 and consequently through the frame opening 12 encompassed by the base frame 4 towards the connecting frame 6. It can be seen that the cover frame 5 also rests against the inner surface 21. The cover frame 5 extends so far towards the connecting frame 6 that it overlaps with it, thus forming a mounting groove 22. In particular, the mounting groove 22, viewed in cross-section, is bounded on one side by the cover frame 5 and on the other by the base frame 4, and the connecting frame 6 engages in the mounting groove 22 to positively lock the connecting frame 6 to the frame 3, namely at least in an imaginary plane parallel to the plane of the frame.

[0171] The cover frame 5, or each of the cover frame members 14, has in cross-section a first cover frame leg 23, a second cover frame leg 24, and a third cover frame leg 25. The first cover frame leg 23 and the third cover frame leg 25 are connected to each other via the second cover frame leg 24, preferably exclusively, but more preferably, the cover frame legs 23, 24, and 25 are made in one piece and of the same material. The first cover frame leg 23 and the third cover frame leg 25 are each angled relative to the second cover frame leg 24, preferably at 90°. Accordingly, the first cover frame leg 23 and the third cover frame leg 24 run parallel or at least substantially parallel to each other. The first cover frame leg 23 and the third cover frame leg 24 preferably each have a hollow profile or are designed as a hollow profile.A sealing projection 26 extends from the cover frame 5, in the embodiment shown here from the third cover frame leg 25. The sealing projection 26 is provided with a flange 27 which, when the roof window 1 is installed on the roof as intended, runs towards the roof, i.e., extends with a free end towards the roof.

[0172] The Fig. Figure 2 shows a schematic representation of the connection frame 6 and the functional frame 7 in a first view, namely as seen from the direction of the frame 3. Two of the connection frame members 15 are connected to each other via a corner connector 28, in particular – at least when the connection frame 6 is arranged separately from the frame 3 – exclusively via the corner connector 28. This means that the connection frame members 15 are spaced apart from each other and are only attached to each other via the corner connectors 28. Each of the connection frame members 15 is, for example, constructed in a sandwich design and in this case has two load-bearing walls 29 and 30, between which insulation 31 is arranged. The load-bearing walls 29 and 30 consist of a load-bearing material, for example, wood, a wood-based material, or a composite material. The insulation 31 consists of an insulating material, for example, a wood-based material or a fiber material.Alternatively, the connecting frame members 15 can also be made of a solid material, for example solid wood, a composite material, preferably a wood composite material, or a polymer, in particular an extruded polymer.

[0173] In the illustrated embodiment, the insulation 31 is a multi-walled corrugated sheet, having several projections 32 and several recesses 33, of which only a few are shown here by way of example. The insulation 31 preferably has a consistently constant wall thickness, so that the recesses 33 form air spaces which, in cross-section, completely penetrate the connecting frame members 15. The insulation 31 is attached to the load-bearing walls 29 and 30, preferably by means of an adhesive foam, with only the projections 32 facing the respective load-bearing walls 29 and 30 being attached to it. Thus, the insulation 31 is attached to the load-bearing walls 29 and 30 at only a few points.

[0174] The corner connectors 28 have a base body 34 with a hollow profile. The hollow profile is open at least on one side, and preferably only on one side. Preferably, the hollow profile is open on the side facing the frame 3 and closed on the side facing away from the frame 3. Limiting webs 35 extend from the base body 34, forming a frame member receptacle 36 between them. Four limiting webs 35 are shown here, forming two frame member receptacles 36 on opposite sides of the corner connector 28. In particular, the limiting webs 35 are arranged in pairs offset from each other by 90°. Two of the connecting frame members 15 engage in the two frame member receptacles 36 and are thereby positively locked to the corner connector 28.From the boundary webs 35 extend rest webs 37 which engage in corresponding rest web receptacles 38 which are made in the load-bearing walls 29 and 30, namely on their side facing away from the insulation 31.

[0175] The connecting frame 6 has at least one functional component 39, or here several functional components 39, which are only partially identified. In particular, at least one of these functional components 39 is arranged on each of the connecting frame members 15. The functional component 39 engages between the load-bearing walls 29 and 30, in particular, it extends through one of the load-bearing walls 29 and 30, preferably one of the load-bearing walls 29 and 30 facing the functional frame 7, in this case, load-bearing wall 29. The functional component 39 has a mounting projection 40, which is designed and configured for receipt in a mounting pocket 41 of the frame 3.

[0176] The functional component 39 also includes a guide device 42 by means of which the functional frame 7, which surrounds the connecting frame 6, is movably mounted on the connecting frame 6 in the direction of the longitudinal center axis 10. For this purpose, the guide device 42 has a guide receptacle 43 into which a guide projection 44 of the functional frame 7 slidably engages. Adjacent to the guide receptacle 43, and in particular parallel to it, a detent device receptacle 45 is provided, in which a detent device 46 with a detent element 47 is arranged. The detent element 47 engages with a detent counter-element 48 of the functional frame 7 (not shown here) to lock the functional frame 7 in one of several detent positions relative to the connecting frame 6. The detent device 46 preferably also includes a spring assembly 49 (not shown here).This creates a spring force that pushes the functional frame 7 against the roof after the roof window 1 has been mounted on it.

[0177] It is also evident that the functional frame 7 has frame insulation 50, which completely and preferably continuously surrounds the connecting frame 6. The frame insulation 50 extends from the connecting frame 6 towards the frame 3 and rests against the frame 3 when the roof window 1 is installed. The frame insulation 50 preferably consists of an elastic, windproof material, which is, for example, open-pored and preferably impregnated to achieve windproofness, or alternatively, closed-cell. It is arranged in a casing 51, which is shown here in an open state. In the open state of the casing 51, the frame insulation 50 is at least partially relaxed in order to rest against the frame 3. When the casing 51 is closed, however, the frame insulation 50 is compressed and is held in this compressed state by the casing 51.In the compressed state, it is also spaced apart from the frame 3 when the frame 3 is arranged on the connecting frame 6.

[0178] The cover 51 has a predetermined tear line 52 along which it tears open under mechanical stress. For opening the cover 51, a tearing device 53, shown here only as a tear strip, is preferably located inside the cover 51 when it is closed. A tearing device control element 54, which is also present outside the cover 51 when it is closed, is attached to the tearing device 53. This control element allows an operating force to be applied to the tearing device 53, causing the mechanical stress. At its end opposite the tearing device control element 54, the tearing device 53 is preferably attached to the functional frame 7 or has another tearing device control element there (not shown).

[0179] The tear-open device 53 is preferably designed such that it can be removed from the functional frame 7 after the cover 51 has been torn open, for example by tearing it off. Overall, the tear-open device 53 is thus designed, for example, such that when actuated with a first operating force, the cover 51 is subjected to the mechanical stress that causes the cover 51 to tear open and thus release the frame insulation 50. With a larger second operating force, however, the tear-open device 53 tears off the connecting frame 6 and can be removed from it. This ensures rapid installation of the roof window 1.

[0180] The Fig. Figure 3 shows a schematic representation of the connection frame 6 and the functional frame 7 in a second view. It can be seen that each of the corner connectors 28 has several engagement projections 55, which engage between the load-bearing walls 29 and 30 of the respective connection frame member 15, displacing the insulation 31, to fasten the connection frame members 15 to the respective corner connector 28. Accordingly, a recess 56 is provided in the insulation 31 to receive the engagement projection 55. The engagement projection 55 extends from a wall 57 that connects the two limiting webs 35. Thus, the connection frame members 15 are arranged in the frame member receptacle 36, and the engagement projection 55 engages in them. This ensures that they are reliably connected to the corner connector 28 and ultimately to each other.

[0181] A latching device mounting cover 58 is arranged on the functional component 39, which overlaps the latching device mounting 45 at least partially to protect it from environmental influences. Furthermore, it can be seen that the connecting frame 6 not only has the frame insulation 50, but also a surface seal 59. The surface seal 59 preferably completely and continuously surrounds the connecting frame 6 and is designed and configured for a sealing connection to the roof. It preferably consists of an elastic, closed-cell material.

[0182] The Fig. Figure 4 shows a schematic representation of the frame 3 with its base frame 4 and cover frame 5. The mounting pocket 41 is visible, into which the mounting projection 40 of the connecting frame 6 engages to secure the connecting frame 6 to the frame 3. The mounting pocket 41(s) is located in the mounting groove 22, into which the connecting frame 6 is also inserted when mounted to the frame 3. The mounting pocket 41 extends through a groove base 60 of the mounting groove 22, forming an opening 61. In cross-section, the mounting groove 22 is bounded by two groove walls 62 and 63, between which the connecting frame 6 engages after installation. The groove wall 62 is formed by the base frame 4, and the groove wall 63 by the cover frame 5. The cover frame 5 has a web that forms part of the first leg 23 of the cover frame.The cover frame 5 also features a receiving groove 64 into which, for example, an inner lining 65 (not shown here) of the roof window 1 is inserted during installation. The frame 3 and the connecting frame 6 are optionally additionally fastened to each other by means of one or more fastening elements, in particular using pins, screws or the like.

[0183] The Fig. Figure 5 shows a schematic representation of the connection frame 6 and the functional frame 7 in a third view, namely without the frame insulation 50. It can be seen that the functional frame 6 is composed of several functional frame parts 66, 67, 68, and 69. The functional frame parts 66 and 69 are functional frame cross members, and the functional frame parts 67 and 68 are functional frame side members. To prevent the ingress of liquid between the functional frame parts 66, 67, 68, and 69, the functional frame parts 66, 67, 68, and 69 overlap at least partially. In the embodiment shown here, the functional frame cross member 66 overlaps both functional frame side members 67 and 68, which in turn overlap the functional frame cross member 69. It can be provided that the functional frame cross member 66 is U-shaped and thus has legs that overlap the functional frame side members 67 and 68.The functional frame side parts 67 and 68 preferably run continuously in a straight line. Alternatively, they are at least approximately L-shaped in order to overlap the functional frame cross part 69.

[0184] Particularly evident from the functional frame side parts 67 and 68 is the fact that the functional frame parts 66, 67, 68, and 69 each have a guide leg 70 and a sealing leg 71. The guide leg 70 runs essentially parallel to the connecting frame members 15, and in particular, it bears against the connecting frame 6 at least temporarily to guide the connecting frame 6 in a tilt-proof manner relative to the connecting frame 6. The frame insulation 50 and the surface seal 59 are arranged and attached to opposite sides of the sealing leg 71. It is preferably provided that the frame insulation 50 is arranged in a sealing receptacle formed between the guide leg 70 and an outer leg spaced apart from the guide leg 70. This ensures reliable guidance of the frame insulation 50 during its expansion.

[0185] The Fig. Figure 6 shows a schematic sectional view through the connecting frame 6 and the functional frame 7, showing the functional component 39 of the former and the guide projection 44 of the latter. As already explained, the guide device 42 with the guide receptacle 43 is formed in the functional component 39, into which the guide projection 44 engages for the linear guidance of the functional frame 7 relative to the connecting frame 6. The functional component 39 has the detent receptacle 45 in which the detent device 46 is arranged. The detent device 46 has a detent element 72 that projects into the guide receptacle 43 in at least one position and engages there with the detent counter-element 48 by engaging in a detent recess 73 of the detent counter-element 48.

[0186] In the illustrated embodiment, the locking element 48 has several spaced-apart locking recesses 73 into which the locking element 72 engages in different positions of the functional frame 7 relative to the connecting frame 6. Preferably, the locking device 46 has several locking elements 72 which are arranged offset from one another, so that one of the locking elements 72 is always engaged in one of the locking recesses 73 to hold the functional frame 7 in one of several locking positions relative to the connecting frame 6.

[0187] The locking element 72, or each of the locking elements 72, is subjected to a spring force by means of the spring arrangement 49, which is oriented such that it pushes the functional frame 7 relative to the connecting frame 6 in the direction away from the frame 3, i.e., towards the roof. Preferably, the locking device 46, and in particular the locking element 47 and the locking counter-element 48, are designed such that they allow or even effect a displacement of the functional frame 7 relative to the connecting frame 6 in the direction away from the frame 3 by means of the spring force, but prevent displacement in the opposite direction. Additionally, a locking element can, of course, be installed during assembly to secure the functional frame 7 relative to the connecting frame 6. This is done, for example, after the frame 3 has been arranged in its final assembly position.The locking element is, for example, a screw that rigidly connects the connection frame 6 and the functional frame. This locking element ensures a permanent connection.

[0188] The Fig. Figure 7 shows a schematic sectional view of the cover frame 5. It can be seen that the cover frame 5 has at least one cavity 74, which is formed, for example, by the hollow profile of the first cover frame leg 23. The cavity 74 is closed with a cover 75 that can be removed without causing damage. For this purpose, the cover 75 is attached to the cover frame 5, for example, by a positive-locking and / or snap-fit ​​connection, or at least can be attached in this way. Preferably, the cavity 74 serves as a cable duct or for the arrangement of other electrical or electronic devices.

[0189] The Fig. Figure 8 shows a schematic representation of a roof 76 on which the roof window 1 is mounted, during a first assembly step. The roof structure 77 of the roof 76 is shown in particular, including a roof batten 78 and roof insulation 79, the latter preferably being installed as above-rafter insulation. In addition to the components already described, a flashing kit 80 is shown for the roof window 1, which serves to create a watertight connection between the roof window 1 and the roof 76. A roof covering, which rests on the roof batten 78 and the flashing kit 80, is not shown. In the first assembly step, the connecting frame 6 is positioned in the mounting groove 22 of the frame 3 and held there, for example, by means of a sealant. Naturally, the mounting projections 40 also engage in the mounting pockets 41.The functional frame 7, with its surface seal 59, rests tightly against the roof structure 77, in particular against the roof insulation 79. The functional frame 7 is in a first position relative to the connecting frame 6.

[0190] The Fig. Figure 9 shows a schematic representation of the roof window 1 and the roof 76 during a second assembly step. In this step, the frame 3, together with the connecting frame 6, is moved towards or into the roof 76, while the functional frame 7 remains in contact with the roof structure 77 or the roof insulation 79. This causes the connecting frame 6 and the functional frame 7 to shift relative to each other, so that after the shift, they are arranged in a second position different from the first. In this second position, the roof window 1 is positioned such that the flashing kit 80 rests against the roof batten 78. When the connecting frame 6 and functional frame 7 are moved from the first position to the second position, the frame 3 and the functional frame 7 move closer together. The frame insulation 50 is compressed accordingly.This ensures reliable thermal insulation of the roof window 1, regardless of the position of the connecting frame 6 and the functional frame 7 relative to each other.

[0191] The Fig. Figure 10 shows a schematic representation of the roof window 1 and the roof 76 in a third assembly step. In this step, the roof window 1 is attached to the roof 76, in particular by means of the mounting brackets 17. Furthermore, the flashing kit 80 engages in a recess between the flange 27 and the third flashing kit leg 25, thus forming a labyrinth seal 81 in a known manner. In the third assembly step, an inner lining 65 is attached to the frame 3 by inserting it into the receiving groove 64 and then connecting it to the connecting frame 6. For example, it is possible to screw the inner lining 65 to the connecting frame 6.

[0192] It may be possible to attach a roof seal, such as an underlayment and / or a vapor barrier, to a side of the connection frame 6 facing away from the roof insulation 79. Alternatively, the underlayment can be attached to a side of the connection frame 6 facing the roof insulation 79. This provides a significantly larger area for attaching the roof seal 82 than was the case with conventional roof windows. Furthermore, the roof seal 82 can remain connected to the connection frame 6 while other parts of the roof window 1, in particular the frame 3, are replaced. Also shown is a sash frame 83 of the roof window, which supports glazing 84, shown here as triple glazing for illustrative purposes only.

[0193] The Fig.Figure 11 shows a schematic representation of a roof window arrangement 85, which, in addition to the roof window 1, has a further roof window 86, preferably identical in construction to the roof window 1. The individual elements of the roof window 86 are provided with the same reference numerals as for the window 1. The frames 3 of the roof windows 1 and 86 are arranged directly adjacent to one another. In particular, the cover frames 5 are directly adjacent to one another, preferably their cover frame legs 25. It can be provided that the base frames 4 also lie directly against one another, especially with their frame insulation elements 18. However, a small gap may also remain between the base frames 4.

[0194] The base frame 4 has mutually facing recesses 87 in which a load-bearing element 89 is arranged, preferably without being fixed. It can be seen that the recesses 87 and 88 each only partially penetrate the base frame 4 in the direction of their longitudinal axes and thus function as pocket recesses. The load-bearing element 89 is designed such that it transmits a force perpendicular to its longitudinal axis between the roof windows 1 and 86, but not, or at most to a lesser extent, in the axial direction. The load-bearing element 89 is preferably in the form of a pin or dowel.

[0195] In addition to the load-bearing element 89, a further load-bearing element 90 is optionally provided, which preferably extends completely through the frame 3. It may also engage with the cover frames 5, but only partially penetrates them. In this respect, the further load-bearing element 90 is concealed by the cover frames 5 and, accordingly, is not visible from the vicinity of the roof window 1 after its installation on the roof 76. The load-bearing element 89 and the further load-bearing element 90 are preferably arranged parallel to each other. In particular, they have the same cross-section through the frame 3 or the corresponding frame member 11 of the frame 3. The load-bearing element 89 is preferably arranged closer to the roof 76 than the further load-bearing element 90.Particularly preferably, both the load-bearing element 89 and the further load-bearing element 90 are arranged in a cross-sectional view in the direction of the longitudinal center axis of the frame 3 or of a frame arrangement 2 comprising the frame 3 in a central third of the frame 3. In particular, the load-bearing element 89 is located in the base frame 4 in a third facing away from the roof 76 with respect to its overall extent in the direction of the longitudinal center axis. The load-bearing element 89 and / or the further load-bearing element 90 are preferably oriented perpendicular to a separating plane present between the frames 3, wherein the separating plane is arranged parallel to the frame plane.

[0196] A spacer is also visible, arranged between the frame sections 3, in particular between the base frames 4 and the frame insulation elements 18. The spacer separates the base frames 3 from each other, while the cover frames 5 lie directly against each other. The spacer has no or only a low load-bearing capacity; it preferably serves solely to separate the base frames 4. The spacer provides space for reliable water drainage between the roof windows 1 and 86.

[0197] With the described configuration of the roof window arrangement 85, a separate connecting rafter between windows 1 and 86 is no longer necessary. Instead, roof windows 1 and 86 are directly connected to one another, specifically in such a way that their frames 4 together form a connecting rafter. For example, each roof window 1 has its own connecting frame 6. However, it is possible to design the functional frame 7 for all roof windows 1 and 86 of the roof window arrangement 85 as a single unit, so that the common functional frame 7 encompasses all connecting frames 6 of the roof window arrangement 85. This allows the advantages described above to also be used for the roof window arrangement 85 with multiple roof windows 1 and 86.

[0198] The described roof window 1 and the roof window assembly 85 enable quick and easy installation of the roof window 1 or 86 on the roof 76. In particular, a reliable seal against the roof 76 is achieved while simultaneously ensuring extremely simple installation. It is also possible to replace parts of the roof window 1 without loosening the roof seal 82, especially to replace the frame 3. For this purpose, it is simply detached from the connecting frame 6 and replaced with another frame 3, which is then attached to the connecting frame 6. The connecting frame 6 and the functional frame 7 remain in place on the roof 76. REFERENCE MARK LIST 1 roof window 2 Frame arrangement 3 bezel frames 4 basic frames 5 Cover frames 6 connection frames 7 Functional framework 8 Vertical axis 9 Transverse axis 10 Longitudinal center axis 11 Frame member 12 Frame opening 13 Base frame member 14 Cover frame beam 15 Connecting frame member 16 Functional frame beam 17 mounting brackets 18 frame insulation element 19 Insulation element mounting 20 front surface 21 inner surface 22 Mounting groove 23 1. Cover frame leg 24 2. Cover frame leg 25 3. Cover frame leg 26 Sealing projection 27 bend 28 corner connectors 29 load-bearing wall 30 load-bearing wall 31 Insulation 32 lead 33 Return 34 Basic bodies 35 Boundary bridge 36 Frame rail mount 37 Resting Footbridge 38 Rest recess 39 Functional component 40 assembly lead 41 Mounting bag 42 Guide system 43 Guided tour 44 Leading lead 45 Locking device mount 46 Resting device 47 Latching element 48 Latching counter element 49 Spring arrangement 50 frame insulation 51 case 52 Target tear line 53 Rip-out device 54 Tear-open device control unit 55 intervention advantage 56 recess 57 Wall 58 Latch mounting cover 59 Surface sealing 60 grooved floor 61 Mouth opening 62 Grooved wall 63 Grooved wall 64 recordings 65 Inner lining 66 Functional frame part 67 Functional frame part 68 Functional frame part 69 Functional frame part 70 Guide legs 71 sealing legs 72 locking element 73 Raststegaufnahme 74 Cavity 75 lids 76 Roof 77 Roof construction 78 roof battens 79 Roof insulation 80 flashing kits 81 Labyrinth seal 82 Roof sealing 83 wing frames 84 Glazing 85 Roof window arrangement 86 roof windows 87 Exclusion 88 Exclusion 89 Load transfer element 90 Load transfer element

Claims

Frame arrangement (2) for a roof window (1), comprising a frame (3), a connecting frame (6) separately designed from the frame (3) and attached to the frame (3), and a functional frame (7), wherein the functional frame (7) encompasses the connecting frame (6) and is displaceable relative to the connecting frame (6) along a straight line perpendicular to a frame plane spanned by the frame (3), wherein a functional component (39) of the connecting frame (6) has a guide device (42) by means of which the functional frame (7) is displaceably mounted on the connecting frame (6), characterized in that the guide device (42) has a guide receptacle (43) into which a guide projection (44) of the functional frame (7) engages in a form-fitting manner. Frame arrangement according to claim 1, characterized in that the functional frame (7) is connected to the connecting frame (6) by means of a locking device (46) in a locking manner and / or by means of a spring arrangement (49) in a resilient manner. Frame arrangement according to claim 2, characterized in that the locking device (46) is part of the guide device (42) and has a locking element (47) which projects into the guide receptacle (43) in at least one position for locking interaction with a locking counter-element (48) of the functional frame (7). Frame arrangement according to claim 2 or 3, characterized in that the spring arrangement (49) pushes the functional frame (7) towards a roof (76) on which the roof window (1) can be arranged. Frame arrangement according to one of claims 2 to 4, characterized in that the locking device (46) is arranged in a locking device receptacle (45) provided next to the guide receptacle (43) in the functional component (39). Frame arrangement according to claim 5, characterized in that the locking device receptacle (45) is at least partially closed in the direction of the functional frame (7) with a locking device receptacle cover (58). Frame arrangement according to one of claims 2 to 6, characterized in that the spring arrangement (49) is part of the guide device (42). Frame arrangement according to claim 3 or one of claims 4 to 7, insofar as it refers back to claim 3, characterized in that the locking device (46) has, in addition to the locking element (47), at least one further locking element which projects into the guide receptacle (43) in at least one position for locking interaction with the locking counter-element (48) of the functional frame (7). Frame arrangement according to claim 3 or one of claims 4 to 8, insofar as it refers back to claim 3, characterized in that the locking element (48) has several separate locking recesses (73). Frame arrangement according to one of the preceding claims, characterized in that the functional frame (7) has a guide leg (70) and a sealing leg (71) angled relative to the guide leg (70), wherein the guide leg (70) slides against the connecting frame (6) and the sealing leg (71) extends from the guide leg (70) away from the connecting frame (6). Roof window (1) with a frame arrangement (2) according to one or more of the preceding claims.

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