Skylight

Abstract

A roof window (1) comprising a frame (2), a sash (3) mounted so as to be pivotable about a pivot axis (6) relative to the frame (2), and a support device (12) for providing a support force acting between the frame (2) and the sash (3), wherein the support device (12) for providing the support force comprises a coupling rod (14) mounted so as to be linearly displaceable along a guide axis (15) by means of a linear guide device (13) arranged on the frame (2) and subjected to a spring force by means of a spring element (16), and a connecting rod (17) of the support device (12) is articulated on the sash (3) or on a projection arm (4) connected to the sash (3) so as to be rotatable about a first connecting rod rotation axis (18) on one end of the coupling rod (14) and on the other hand so as to be rotatable about a second connecting rod rotation axis (19), characterized in thatthat a boom (22) extends from the linear guide device (13) and engages over the coupling rod (14) and / or the connecting rod (17) in at least one position of the sash frame (3) and the frame (2) relative to one another, wherein - a brake block (23) is arranged on the boom (22), which in at least one brake block position rests frictionally on a curved path (26) facing the boom (22) of a braking element (25) connected to the sash frame (3) or the extension arm (4), and / or wherein - a locking element (27) is arranged on the bracket (22) which, in at least one position of the sash frame (3) relative to the frame (2), engages in a locking recess (28) made on the braking element (25).

Description

[0001] The invention relates to a roof window, with a frame, a sash mounted so as to be pivotable about a pivot axis with respect to the frame and a support device for providing a support force acting between the frame and the sash, wherein the support device for providing the support force has a coupling rod which is mounted so as to be linearly displaceable along a guide axis by means of a linear guide device arranged on the frame and is acted upon by a spring force by means of a spring element, and a connecting rod of the support device is articulated on one end of the coupling rod so as to be rotatable about a first connecting rod rotation axis and on the other hand so as to be rotatable about a second connecting rod rotation axis on the sash or on a projection arm connected to the sash.

[0002] From the prior art, for example, the document EP 1 908 892 B1 is known. This describes a window, in particular a roof window, with a sash frame that can be pivoted against a frame, with at least one opening aid comprising a opening arm that is hinged to the sash frame at a first end and can be displaced along the frame at a second end via a sliding shoe in a sliding cassette, or vice versa, wherein at least one braking element is operatively connected to the sliding cassette and is connected to the sliding shoe via at least one connecting element. It is provided that the braking element is arranged on an outer wall of the sliding cassette and is operatively connected to it.

[0003] Furthermore, EP 0 692 597 B1 describes a roof window with a locking device for locking in open positions, wherein an opening aid is provided in the form of at least one spring arm which, at least when the roof window is closed, extends at an acute angle to the casing box, and which, when opened, supports the window sash on the casing box. The spring arm is operatively connected to both the casing box and the window sash via pivot bearings, one of the pivot bearings being located on a spring-loaded slider which can be displaced in a guide and can be locked by means of a locking device actuated by a handle.

[0004] The object of the invention is to propose a roof window which has advantages over known roof windows, in particular ensuring a high level of operating comfort, preferably through a uniform progression of the supporting force provided by the supporting device.

[0005] US Patent No. 8,108,971 B2 describes a pivot hinge for roof windows, which has a sash that pivots around the axis between the upper and lower sections of the window. The pivot hinge also features a compensation system that ensures the balance of the window sash when its center of gravity is outside the sash's rotation axis and the hinge's friction spring cannot hold the sash in all its positions. The window fitting, its assembly, its installation in the roof, and its appearance remain unchanged. The method of separating the two hinge parts, particularly when removing the sash from the window frame, also remains unchanged.

[0006] Furthermore, document EP 4 116 53 A1 discloses a handling and installation unit for a roof window having a frame, a sash, and a sash hinge part of a hinge. An assembly is detachably connected to the hinge. The assembly comprises a first element and a second element connectable to the first element. The first element and the second element can be engaged with each other in a first orientation to temporarily lock the sash hinge part in the first orientation, and the first element and the second element can be engaged with each other in a second orientation to temporarily lock the sash hinge part in the second orientation. This is achieved according to the invention with a roof window having the features of claim 1.It is provided that a cantilever extends from the linear guide device, which engages over the coupling rod and / or the connecting rod in at least one position of the sash frame and the frame relative to one another, wherein a brake block is arranged on the cantilever, which in at least one brake block position bears frictionally against a curved path of a braking element connected to the sash frame or the extension arm, facing the cantilever, and / or wherein a locking element is arranged on the cantilever, which engages in a locking recess produced on the braking element in at least one position of the sash frame relative to the frame.

[0007] Advantageous embodiments with useful further developments of the invention are specified in the dependent claims. It should be noted that the exemplary embodiments explained in the description are not limiting; rather, any variations of the features disclosed in the description, the claims, and the figures are feasible.

[0008] The roof window is preferably part of a building, but can of course also be separate from it, in particular until it is mounted on the building or on a roof of the building. The building has the roof, for arrangement on or in which the roof window is intended and designed. The roof lies between an exterior environment of the building and an interior of the building, thus separating them from each other. The roof window serves to at least temporarily and / or partially close a recess formed in the roof. This recess can also be referred to as a roof opening.

[0009] The roof essentially consists of a roof structure and a roof covering. The roof structure has, for example, one or more rafters and one or more roof battens. In addition, the roof structure has insulation, which can be designed as under-rafter insulation, between-rafter insulation and / or on-rafter insulation. In this description, the insulation is also referred to as roof insulation to better distinguish it from other elements. The roof battens can be divided into counter battens and support battens, whereby the presence of counter battens is optional. The support battens are usually arranged at an angle, in particular perpendicular, to the rafters and attached to them. The counter battens, on the other hand, preferably run at an angle with respect to the support battens, in particular perpendicular to them, and / or parallel or at least essentially parallel to the rafters.

[0010] The roof skin is arranged or attached to the outside of the roof structure, thus defining the roof structure's boundary towards the outside. The term "roof skin" refers in particular to a roof covering or roof waterproofing. The roof covering comprises, for example, a plurality of roof tiles, roof stones, roof shingles, or the like. Towards the inside, i.e., towards the interior, the roof structure is preferably defined by an interior wall. For this purpose, the interior wall is arranged and / or attached to the roof structure on its side facing the interior. For example, the skylight is connected to the interior wall via an interior lining.

[0011] The roof window can also be referred to as a roof window and is preferably a residential roof window or residential roof window. It is preferably designed to close the roof opening in a translucent or opaque manner, at least partially, preferably completely. If the roof window is translucent, it is particularly equipped with glazing, which can be single or multiple glazing, for example, double or triple glazing.

[0012] The roof window comprises a frame and a sash, with both the frame and the sash each having several frame members. The frame members of the frame can also be referred to as frame members, and the frame members of the sash can also be referred to as sash members. The frame members of each frame are attached to each other in such a way that they sandwich a portion of the roof window between them. The frame members of each frame thus form a closed frame or closed frame element.

[0013] The frame and the sash are particularly designed such that they overlap and / or cover the roof opening. The frame and the sash are preferably arranged and designed such that, in particular together with the glazing, they completely close the roof opening at least temporarily. The glazing is preferably supported by the sash. For example, it is enclosed by the multiple sash members of the sash. The sash members therefore preferably completely and continuously surround the glazing, or the glazing rests on each of the sash members and is thus supported by them.

[0014] The roof window is openable and closable, i.e. it can be opened and closed, and is designed accordingly. Consequently, the roof window can be present in different opening states, in which the two frames of the roof window, i.e. the outer frame and the sash frame, are arranged differently relative to one another. For example, the roof window is closed in a first opening state and at least partially or even completely open in a second opening state. The first opening state can also be referred to as the closed state and the second opening state as the open state. In the closed state of the roof window, an opening delimited by the outer frame is closed more closely by the sash frame, in particular together with the glazing, than in the open state; in particular, the opening of the outer frame is completely closed by the sash frame in the closed state, preferably together with the glazing.

[0015] To enable the opening and closing of the roof window, the sash is displaceable relative to the outer frame, or more precisely, pivotable or rotatable. If the glazing is present, it is preferably arranged or fastened to the sash and is only indirectly supported by the outer frame and / or the building via the sash. Accordingly, the glazing, together with the sash, is displaceable or pivotable relative to the outer frame. For this purpose, the sash is mounted so as to be pivotable about the pivot axis relative to the outer frame, in particular on the outer frame. In the first opening state, the sash is in a first position relative to the outer frame and in the second opening state it is in a second position. Following the designations defined above, the first position can be a closed position and the second position an open position.

[0016] For example, the sash can be pivoted relative to the frame about a first pivot axis. The first pivot axis lies - when the roof window is installed as intended - on an upper side of the frame or at least in an upper third of the frame. Such a roof window can also be referred to as a top-hung window. Additionally or alternatively, it can be provided that the sash can be pivoted relative to the frame about a second pivot axis, namely a second pivot axis different from the first pivot axis. The second pivot axis lies, for example, in a middle third of the frame. Such a roof window can also be referred to as a top-hung window. If the sash can be pivoted relative to the frame about both the first pivot axis and the second pivot axis, the roof window is designed as a top-hung and top-hung window.The pivot axis already mentioned is preferably the first pivot axis.

[0017] A force acts on the sash frame, which comprises at least a weight force which, at least when the roof window is in its intended installation position, is directed towards closing the roof window, i.e. pushing the sash frame towards its closed position. In addition to the weight force, depending on the ambient conditions of the roof window, at least one further force can act on the sash frame, for example a force caused by precipitation, in particular snowfall, and / or a force caused by wind, and accordingly be part of the force acting on the sash frame. The former can also be referred to as precipitation load or snow load, and the latter as wind load. The precipitation load is also directed towards closing the roof window, while the wind load can temporarily close and temporarily open the roof window.

[0018] To ensure comfortable operation of the roof window, it is equipped with a support device. The support device provides the supporting force, which acts between the frame and the sash and is directed towards opening the roof window. Ideally, the supporting force is directed in such a way that it at least partially compensates for the force acting on the sash. In particular, the support device is designed and adjusted in such a way that the supporting force at least approximately compensates for the weight acting on the sash. However, the weight acting on the sash depends both on the installation angle of the roof window, which in turn depends on the angle of inclination of the roof, and on the position of the sash relative to the frame.

[0019] In conventional roof windows, the supporting force exerted by the support device decreases the further the roof window is opened. It is therefore entirely possible that the supporting force does not provide sufficient support for opening the roof window, but counteracts its closing. It may also occur that the sash frame cannot be positioned securely in every position. If the supporting force is smaller or larger than the force acting on the sash frame in the respective opening state, the roof window will unintentionally close or open (further) due to this force or the resulting force difference.

[0020] This problem is at least partially eliminated with the proposed design of the support device. The support device has the linear guide device. By means of this, the coupling rod is mounted so as to be linearly displaceable along the guide axis, namely relative to the frame. In particular, the coupling rod is mounted on the frame with the aid of the linear guide device; for this purpose, the linear guide device engages the frame, is fastened to it, or is formed by the frame. The coupling rod is at least temporarily subjected to spring force with the aid of the spring element, wherein the spring force acting on the coupling rod depends on a position of the coupling rod. Preferably, the spring element engages the linear guide device on the one hand and the coupling rod on the other. Particularly preferably, the spring element is designed as a compression spring.

[0021] It can be provided that the linear guide device and the coupling rod are located on one of the frame members, so that the coupling rod is mounted on this frame member for linear displacement by means of the linear guide device. The guide axis, along which the coupling rod is displaceable, can generally be arranged parallel to a longitudinal center axis of the frame member. However, it is particularly preferably angled relative to the longitudinal center axis, in particular relative to an imaginary plane that incorporates the longitudinal center axis of the frame member and is aligned parallel to a frame plane spanned by the frame.

[0022] The frame plane preferably runs through all of the frame members of the frame, in particular intersecting them centrally. In this respect, the frame plane preferably completely accommodates the longitudinal center axes of the frame members of the frame. Particularly preferably, the guide axis is angled relative to the imaginary plane, i.e., it forms an angle with it that is greater than 0° and less than 180°. Particularly preferably, the angle is at least 5°, at least 10°, or at least 15°. Additionally or alternatively, the angle is at most 45°, at most 30°, and at most 15°. For example, the angle is 5° to 30°, 10° to 25°, or 15° to 20°. By angling the coupling rod relative to the longitudinal center axis of the frame member, the supporting force acting on the sash is reliably provided.

[0023] A drive connection between the coupling rod and the sash frame is established via the connecting rod, which is also a component of the support device. On the one hand, the connecting rod is pivoted to the coupling rod, namely at one end of the coupling rod, so that it can rotate about the first connecting rod rotation axis. This means, in particular, that the first connecting rod rotation axis is at a distance from one end of the coupling rod that is no more than 20%, no more than 10%, or no more than 5% of the total length of the coupling rod or the connecting rod. In this respect, the connecting rod represents an extension of the coupling rod that can rotate relative to the coupling rod.

[0024] On the other hand, the connecting rod is pivoted on the sash or on the projection arm connected to the sash, preferably at the end on the sash or the projection arm, respectively. The connecting rod preferably engages directly on the sash or the projection arm, i.e. is mounted directly on it with respect to the second connecting rod rotation axis. This means that the connecting rod is coupled to the sash directly or only indirectly via the projection arm. The projection arm can be rigidly connected to the sash. Preferably, however, it serves to implement the second rotation axis of the sash with respect to the outer frame. For this purpose, the projection arm is mounted on the sash, pivoting about the second rotation axis. For example, in at least one position with respect to the sash, the projection arm lies flat against a frame member of the sash.Where the position of the sash frame is discussed in this description, the same position of the sash frame relative to the extension arm is always assumed, in particular an initial position which exists when the roof window is closed.

[0025] The end-side attachment of the connecting rod to the sash frame means that the connecting rod is hinged in an end region of the sash frame or an end region of one of the sash frame stiles. If the connecting rod is hinged to the projection arm, this preferably applies in at least one position of the projection arm relative to the sash frame, in particular in a position when the roof window is closed. The end region comprises, for example, starting from a respective end of the sash frame or the sash frame stile, a maximum of 15%, a maximum of 10%, or a maximum of 5% of the sash frame or the sash frame stile. By introducing the spring force into the sash frame at the end via the connecting rod, a comparatively uniform supporting force is achieved, which is less dependent on the position of the sash frame relative to the frame than in known roof windows.

[0026] Additionally or alternatively, the pivot axis and the second connecting rod rotation axis lie on opposite sides of an imaginary plane that is arranged parallel to a sash plane spanned by the sash frame, namely on a side of this imaginary plane facing the frame or the roof. Preferably, therefore, in at least one position of the sash frame, in particular in the closed position, the pivot axis is further away from the frame plane than the second connecting rod rotation axis and / or the pivot axis and the second connecting rod rotation axis lie on opposite sides of the frame plane. For the intended installation situation of the roof window, this means in particular that the pivot axis is arranged further away from the roof than the second connecting rod rotation axis. The described design of the roof window achieves a particularly high level of operating comfort.

[0027] A further development of the invention provides that the connecting rod is continuously straight, so that an imaginary connecting line between the two connecting rod axes of rotation, perpendicular to the first connecting rod axis of rotation and perpendicular to the second connecting rod axis of rotation, runs continuously through the connecting rod. The connecting line is perpendicular to both connecting rod axes of rotation, thus connecting them by the shortest path. The connecting rod is designed such that it continuously incorporates the connecting line; the connecting line does not run away from or next to the connecting rod at any point. For example, the connecting rod has a bearing eye on each opposite side, with a respective longitudinal center axis of each bearing eye corresponding to the respective connecting rod axis of rotation.Particularly preferably, the connecting line coincides with a longitudinal center axis of the connecting rod, which is continuously centered in the longitudinal direction of the connecting rod. Such a configuration leads to a uniform force introduction into the sash frame.

[0028] A further development of the invention provides that in at least one position of the sash and the outer frame relative to one another, the connecting line encloses an angle with the guide axis which is at least 165°, at least 170° or at least 175°. The connecting line and the guide axis intersect at this angle. The angle depends on the position of the sash and therefore changes together with it. The sash can be arranged in at least one position in which the coupling rod and the connecting rod are arranged almost as an extension of one another, i.e. their longitudinal central axes run parallel to one another or even coincide. This results in an angle between the connecting line and the guide axis which is at least 165°, at least 170° or at least 175° and at most 180°. Particularly preferably, the said angle exists at least in the closed position of the sash.It can also be provided that the angle in any position of the sash frame occurring during normal operation is at least 135°, at least 150°, or at least 165°, and at most 180°. This also ensures particularly effective force transmission into the sash frame.

[0029] A further development of the invention provides that the first connecting rod rotation axis and the second connecting rod rotation axis lie on a longitudinal center axis of the connecting rod. Accordingly, the connecting rod, as already mentioned, is straight throughout. The longitudinal center axis is perpendicular to both the first connecting rod rotation axis and the second connecting rod rotation axis, so that the longitudinal center axis of the connecting rod corresponds in particular to the connecting line. The advantages achieved thereby have already been mentioned.

[0030] A further development of the invention provides that the connecting rod is articulated to the sash frame or the projection arm in such a way that the second connecting rod rotation axis is at a distance from the pivot axis that corresponds at most to the height of the sash frame, in particular to the height of a sash frame member of the sash frame. Unlike known roof windows, a comparatively small distance is provided between the pivot axis of the sash frame and a force introduction point, at which the supporting force is introduced into the sash frame or the projection arm. This force introduction point corresponds to the point at which the connecting rod is articulated to the sash frame or the projection arm, i.e., it lies on the second connecting rod rotation axis.

[0031] The sash has its height in a vertical direction perpendicular to the sash plane. The height corresponds to the maximum dimensions of the sash in this direction over its entire extent. The same applies to the sash spar and its height. The distance between the pivot axis and the second connecting rod rotation axis corresponds at most to the height of the sash or the height of the sash spar to which the connecting rod is hinged. For example, this is achieved using the arrangement already explained, in which the pivot axis and the second rotation axis are arranged on opposite sides of the imaginary plane parallel to the sash plane. Although this means a small lever travel, a comparatively even distribution of the assist force is achieved.

[0032] A further development of the invention provides that the spring element is arranged on a first side of the linear guide device, and the connecting rod is articulated to the coupling rod on a second side of the linear guide device opposite the first side. The coupling rod extends through the linear guide device and is connected to the spring element on the first side and to the connecting rod on the second side. The spring element is preferably supported on the coupling rod on the one hand and on the linear guide device on the other. The spring element is preferably designed as a compression spring, so that a reliable provision of the spring force is achieved.

[0033] The invention provides that a cantilever extends from the linear guide device, which cantilever engages the coupling rod and / or the connecting rod in at least one position of the sash frame and the frame relative to one another. The cantilever extends from the linear guide device towards the second connecting rod rotation axis. In doing so, it engages the coupling rod and / or the connecting rod at least in part. This is to be understood in particular that, due to this arrangement, the cantilever is intersected by an imaginary plane which incorporates the guide axis and / or the connecting line and is oriented perpendicular to the frame plane. With the aid of the cantilever, an extended functionality of the support device can be implemented.

[0034] In a first variant of the invention, a brake block is arranged on the boom, which, in at least one brake block position, frictionally engages a curved path of a braking element connected to the sash frame or the extension arm, facing the boom. The support device therefore additionally has the brake block and the braking element. The brake block and the braking element interact, at least temporarily, to brake the sash frame, i.e., to apply a braking force. For this purpose, the brake block is preferably displaceably arranged on the boom and is subjected to a spring force that urges it towards the braking element or against the braking element.

[0035] The braking element is rigidly connected to the sash frame or the extension arm and has the curved track against which the braking block rests in its at least one braking block position. The braking block position is preferably understood to mean a position of the braking block relative to the boom. The curved track is a continuously curved surface. Preferably, the radius of curvature of the curved track is the same over its entire extent. However, a change in the radius of curvature over the extent of the curved track can also be provided, for example in order to achieve a braking force of the braking block that is dependent on the position of the sash frame. The braking force is preferably selected such that the supporting force exerted by the supporting device on the sash frame is independent of the position of the sash frame relative to the frame, i.e. remains essentially the same.The assistance force depends on both the braking force and the spring force acting on the coupling rod. Once again, the described design serves to achieve a particularly high level of operating comfort.

[0036] In a second variant of the invention, it is additionally or alternatively provided that a locking element is arranged on the boom, which in at least one position of the sash relative to the frame engages in a locking recess provided on the braking element. The locking element can be present as an alternative to the brake block, but particularly preferably the locking element is arranged on the boom in addition to the brake block. The locking element is displaceable relative to the boom and can therefore be arranged in different locking element positions. Preferably, the locking element is subjected to a spring force which urges it towards the braking element. At least one locking recess is formed in the braking element, into which the braking element engages in a locking manner in the position of the sash associated with the locking recess and in the corresponding locking element position.

[0037] Preferably, the locking element rests continuously on the cam track away from the locking recess and is pushed toward the braking element. If the locking element overlaps the locking recess when the sash is in the appropriate position, the spring force pushes it into the locking recess, so that the sash is held in the position assigned to the locking recess by the locking element's engagement with the locking recess.

[0038] The locking element and the locking recess are designed such that the sash is forced out of the locking recess by applying a sufficiently large operating force against the spring force, so that the sash can subsequently be moved with less operating force. The locking recess is assigned, for example, to the open position of the sash, so that the roof window is reliably held open. Such a locking recess can also be assigned to a ventilation position lying between the open and closed positions. In the ventilation position, the roof window is only partially open to allow air exchange between the outside environment and the interior. The described design enables particularly convenient operation of the roof window.

[0039] A further development of the invention provides that the locking recess extends through the curved track to form an opening, wherein the opening has dimensions in the circumferential direction with respect to the pivot axis that are smaller than the dimensions of the brake block on its side facing the curved track and / or correspond at most to the dimensions of the locking element on its side facing the curved track. The locking recess is formed in the brake element, which also has the curved track. The locking recess engages in the brake element in such a way that it extends through the curved track, thereby forming the opening. The opening is dimensioned in the circumferential direction with respect to the pivot axis in such a way that although the locking element can pass through the opening into the locking recess, the brake block slides reliably on the curved track without entering the locking recess.This is ensured by the choice of dimensions mentioned.

[0040] A further development of the invention provides that the braking element has a recess into which the connecting rod engages. For example, the connecting rod is hinged to the sash frame via the braking element. For this purpose, the connecting rod engages directly with the braking element, which is ultimately attached to the sash frame. The recess is delimited, for example, with respect to the second connecting rod rotation axis, by bearing cheeks between which the connecting rod is arranged. This ensures reliable guidance of the connecting rod.

[0041] A further development of the invention provides that the sash is pivotably mounted about the pivot axis by means of a bearing shaft which engages on opposite sides of the sash frame's frame members and is rotatably mounted in at least one bearing part. The bearing shaft serves to pivotally mount the sash frame with respect to the outer frame. For this purpose, it engages on opposite sides of the sash frame's frame members, namely preferably on two side members of the sash frame, which are arranged parallel and spaced from one another. The bearing shaft is completely continuous; the frame members are therefore not mounted by means of separate bearings, but jointly via the bearing shaft. The bearing shaft is rotatably mounted in the at least one bearing part, wherein the bearing part is fixed with respect to the outer frame, in particular is fastened to the outer frame.Preferably, several bearing parts are present in order to achieve reliable pivoting of the sash frame.

[0042] A further development of the invention provides that the bearing part is in the form of a plug-in part and engages in a frame groove of the frame. The bearing part has, for example, a bearing area and an insertion area. The bearing shaft is rotatably mounted in the bearing area and the insertion area extends from the bearing area. With its insertion area, the bearing part engages in the frame groove of the frame and is thus held stationary with respect to it, namely at least in a form-fitting manner. The frame groove only partially extends through the frame, but preferably by at least 50%, at least 60% or at least 70%, and the insertion part preferably engages the same extent or at least almost the same extent into the frame. The bearing part therefore extends through the frame by at least 50%, at least 60% or at least 70%. This ensures the form-fitting hold of the bearing part on the frame.

[0043] A further development of the invention provides that the support device is arranged in a longitudinal groove of the frame. Preferably, the longitudinal groove is located in a side member of the frame and extends in its longitudinal direction. The support device is arranged in the longitudinal groove such that it is located between the walls of the frame delimiting the longitudinal groove, in particular, it rests against them. This achieves a compact arrangement of the support device.

[0044] A further development of the invention provides that, in addition to the support device, there is a further support device, wherein the support devices are arranged on different sash members of the sash. The further support device is designed analogously to the support device, so that reference is made to the corresponding embodiments. However, they are arranged on different sash members or engage on different sash members, in particular on sash members arranged parallel and spaced apart from one another. This ensures a uniform provision of the support force to the sash members.

[0045] The features and feature combinations described in the description, in particular the features and feature combinations described in the following description of the figures and / or shown in the figures, can be used not only in the respective combination specified, but also in other combinations or on their own, without departing from the scope of the invention. Thus, embodiments are also to be considered encompassed by the invention 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.

[0046] The invention will be explained in more detail below with reference to the exemplary embodiments shown in the drawings, without limiting the invention. In the drawings: Fig. 1 a schematic representation of a region of a roof window, more precisely a sash frame of the roof window and a support device arranged thereon, Fig. 2 a further schematic representation of a region of the roof window, in particular showing a support device, Fig. 3 a schematic representation of the roof window, showing in addition to the sash frame a portion of a frame, Fig. 4 a further schematic representation of the roof window, showing the support device arranged on the frame, and Fig. 5 a schematic sectional view through the roof window, wherein in particular an arrangement of the support device in a longitudinal groove of the frame can be seen.

[0047] Fig. 1 shows a schematic representation of a section of a roof window 1, which has a frame 2 (not shown) and a sash 3 (likewise not shown). The sash 3 is connected to the frame 2 via a projection arm 4, of which only one is visible. It can be provided that the projection arm 4 is rigidly connected to the sash 3 or forms part of it. Preferably, however, the projection arm 4 is pivotally connected to the sash 3. The sash 3, or more precisely the projection arm 4, is pivotally mounted relative to the frame 2 by means of a bearing device 5, namely about a pivot axis 6. The bearing device 5 comprises a bearing shaft 7, which engages the sash 3 or the projection arm 4, in particular on opposite sides. The bearing shaft 7 is rotatably or pivotably mounted about the pivot axis 6 by means of a bearing part 8.The bearing part 8 comprises a bearing area 9 and an insertion area 10, which can be inserted into a frame groove 11 (not shown here) of the frame 2. The bearing part 8 is therefore present as an insertion part.

[0048] To assist in the operation of the roof window 1, it is equipped with a support device 12, which can also be referred to as an opening aid. The support device 12 has a linear guide device 13, which is arranged on the frame 2. A coupling rod 14 is mounted in the linear guide device 13 so as to be linearly displaceable along a guide axis 15. The coupling rod 14 is subjected to a spring force by means of a spring element 16. It is also rotatably connected to a connecting rod 17 and, via this, is drive-coupled to the sash frame 3. The connecting rod 17 is pivotally connected to the coupling rod 14 about a first connecting rod rotation axis 18 and is pivotally connected to the sash frame 3 about a second connecting rod rotation axis 19. It can be seen that the connecting rod 17 engages one end of the coupling rod 14.

[0049] At this end, the coupling rod 14 has, for example, two bearing cheeks, between which the connecting rod 17 engages for rotatable articulation. On the other hand, the connecting rod 17 is hinged at its end to the sash frame 3 or the extension arm 4. This means that it engages at a similar distance from one end of the sash frame 3 or the extension arm 4 as the bearing shaft 7.

[0050] The connecting rod 17 is designed to be straight throughout, so that a connecting line 20 running through the two connecting rod rotation axes 18 and 19 runs continuously in the connecting rod 17 between the connecting rod rotation axes 18 and 19. It can also be seen that the guide axis 15 and the connecting line 20 intersect at an angle α. The angle α depends on the position of the sash frame 3 or the projection arm 4 with respect to the frame 2. However, it is preferably always at least 135°, at least 150° or at least 165°, regardless of the position of the sash frame 3 or the projection arm 4 or in any position of the sash frame 3 or the projection arm 4 occurring during normal operation of the roof window 1. In particular, the angle assumes its smallest value in the open position of the sash frame 3 shown here, wherein this smallest value preferably corresponds to one of the previously mentioned values.The connecting rod 17 thus represents a kind of extension for the coupling rod 14. It can be seen that the spring element 16 and the connecting rod 17 are arranged on opposite sides of the linear guide device 13. Preferably, the spring element 16 is supported on the one hand on the linear guide device 13 and on the other hand on an annular projection 21 (not visible here) of the coupling rod 14. The annular projection 21 is preferably adjustable in the axial direction with respect to the guide axis 15, so that a preload of the spring element 16 is adjustable.

[0051] A cantilever 22 extends from the linear guide device 13 and at least partially engages over the coupling rod 14 and also the connecting rod 17. A brake block 23 is arranged on the cantilever 22 and is urged in the direction of a braking element 25 by means of an elastic element 24. The braking element 25 has a curved track 26 facing the cantilever 22, against which the brake block 23 is urged by the elastic element 24 in order to achieve a braking force on the sash frame 3 or the extension arm 4. Furthermore, a locking element 27 is arranged on the cantilever 22. This element is also subjected to spring force and is urged in the direction of the braking element 25 by a corresponding spring force. At least one locking recess 28 is formed in the braking element 25, wherein in the exemplary embodiment shown, there are several locking recesses 28, more precisely three locking recesses 28.The locking recesses 28 each extend through the curved track 26, forming a mouth opening. The mouth opening is dimensioned such that the locking element 27, but not the brake block 23, can enter the locking recess 28 through it. The locking element 27 is in the form of a locking pin and has a rounded side. This allows the locking element 27 to be ejected from the locking recess 28 by applying a specific operating force to the sash frame 3 or the extension arm 4.

[0052] The Fig. Figure 2 shows a further representation of the roof window 1. It can now be seen that, in addition to the support device 12, there is a further support device 29 which engages another sash frame member 30. It can also be seen that the bearing shaft 7 is continuous and engages the sash frame members 4 and 30 on opposite sides. A bearing part 8 is arranged on each side of the bearing shaft 7, by means of which the bearing shaft 7 is pivotably mounted on the frame 2 about the pivot axis 6.

[0053] The Fig. Figure 3 shows a further schematic representation of the roof window 1, wherein the frame 2 is indicated in addition to the sash frame 3. The frame groove 11 is formed in the frame groove, into which the bearing part 8 positively engages with its insertion area 10. For example, elongated holes 31 are formed in the bearing part 8 so that the sash frame 3 can be aligned with the frame 2 during assembly before it is finally fastened.

[0054] The Fig. Figure 4 shows a schematic representation of the roof window 1. It can be seen that the frame 2 has a longitudinal groove 32 in which the support device 12 is arranged. The use of the coupling rod 14 and the connecting rod 17 and their connection to the sash frame 3 makes it possible to dispense with an otherwise conventional projection arm, thus achieving a high degree of flexibility and an attractive appearance of the roof window 1.

[0055] The Fig. Figure 5 shows a schematic sectional view of the roof window 1, again showing the arrangement of the support device 12 in the longitudinal groove 32. This results in a space-saving accommodation of the support device 12 and a high level of rigidity, since the support device 12 contributes to the stability of the frame 2. LIST OF REFERENCE SYMBOLS 1 skylight 2 frame 3 sash frames 4 extension arms 5 Storage facility 6 swivel axis 7 Bearing shaft 8 bearing part 9 Storage area 10 Insertion area 11 Frame groove 12 Support device 13 Linear guide device 14 Coupling rod 15 Guide axis 16 spring element 17 Connecting rod 18 1. Connecting rod rotation axis 19 2. Connecting rod rotation axis 20 connecting lines 21 ring projection 22 booms 23 brake pad 24 elastic element 25 brake element 26 curved track 27 locking element 28 Recess 29 Support device 30 sash frame spar 31 elongated holes 32 Longitudinal groove

Claims

[1] Roof window (1), comprising a frame (2), a sash (3) mounted so as to be pivotable about a pivot axis (6) relative to the frame (2), and a support device (12) for providing a support force acting between the frame (2) and the sash (3), wherein the support device (12) for providing the support force has a coupling rod (14) mounted so as to be linearly displaceable along a guide axis (15) by means of a linear guide device (13) arranged on the frame (2) and subjected to a spring force by means of a spring element (16), and a connecting rod (17) of the support device (12) is articulated on one end of the coupling rod (14) so as to be rotatable about a first connecting rod rotation axis (18) and on the other end so as to be rotatable about a second connecting rod rotation axis (19) on the sash (3) or on a projection arm (4) connected to the sash (3), characterized bythat a boom (22) extends from the linear guide device (13) and engages over the coupling rod (14) and / or the connecting rod (17) in at least one position of the sash frame (3) and the frame (2) relative to one another, wherein - a brake block (23) is arranged on the boom (22), which in at least one brake block position rests frictionally on a curved path (26) facing the boom (22) of a braking element (25) connected to the sash frame (3) or the extension arm (4), and / or wherein - a locking element (27) is arranged on the bracket (22) which, in at least one position of the sash frame (3) relative to the frame (2), engages in a locking recess (28) made on the braking element (25). [2] Roof window according to claim 1, characterized bythat the connecting rod (17) is straight throughout, so that an imaginary connecting line (20) perpendicular to the first connecting rod rotation axis (18) and perpendicular to the second connecting rod rotation axis (19) runs continuously through the connecting rod (17) between the two connecting rod rotation axes (18, 19). [3] Roof window according to one of the preceding claims, characterized by that the connecting line (20) in at least one position of the sash frame (3) and the frame (2) relative to one another encloses an angle with the guide axis (15) which is at least 165°, at least 170° or at least 175°. [4] Roof window according to one of the preceding claims, characterized by that the first connecting rod rotation axis (18) and the second connecting rod rotation axis (19) lie on a longitudinal center axis of the connecting rod (17). [5] Roof window according to one of the preceding claims, characterized bythat the connecting rod (17) is articulated on the casement (3) or the extension arm (4) in such a way that the second connecting rod rotation axis (19) has a distance from the pivot axis (6) which corresponds at most to a height of the casement (3). [6] Roof window according to one of the preceding claims, characterized by that the spring element (16) is arranged on a first side of the linear guide device (13) and the connecting rod (17) is articulated on the coupling rod (14) on a second side of the linear guide device (13) opposite the first side. [7] Roof window according to one of the preceding claims, characterized bythat the locking recess (28) extends through the curved path (26) to form a mouth opening, the mouth opening having dimensions in the circumferential direction with respect to the pivot axis (6) which are smaller than dimensions of the brake pad (23) on its side facing the curved path (26) and / or correspond at most to dimensions of the locking element (27) on its side facing the curved path (26). [8] Roof window according to one of the preceding claims, characterized by that the braking element (25) has a recess into which the connecting rod (17) engages. [9] Roof window according to one of the preceding claims, characterized by that the sash frame (3) is pivotally mounted about the pivot axis (6) by means of a bearing shaft (7) which engages on opposite sides of frame members (4, 30) of the sash frame (3) and is rotatably mounted in at least one bearing part (8). [10] Roof window according to claim 9, characterized bythat the bearing part (8) is in the form of a plug-in part and engages in a frame groove (11) of the frame (2). [11] Roof window according to one of the preceding claims, characterized by that the support device (12) is arranged in a longitudinal groove (32) of the frame (2). [12] Roof window according to one of the preceding claims, characterized by that in addition to the support device (12) there is a further support device (29), wherein the support devices (12, 29) are arranged on different sash frame members (4, 30) of the sash frame (3).

Images