Flat roof window

Abstract

The invention relates to a roof window (1) with a frame (2) and a sash frame (3) which is pivotably mounted on the frame (2) by means of at least one extension arm (4) about at least one axis of rotation, wherein a support arm (8) engages the extension arm (4) on one side and is mounted on the frame (2) on the other side.The support arm (8) is articulated to a slide (7) which is linearly guided on the extension arm (4) and which can be moved in a displacement direction by means of an electric drive (6) arranged on the sash frame (3) for displacing the sash frame (3) relative to the frame (2), wherein the slide (7) has a first slide part (9) coupled to the drive (6) and a second slide part (10) coupled to the support arm (8), which are positively coupled to each other in a first position of a locking element (11) for the drive-related coupling of the sash frame (3) to the drive (6) and are decoupled from each other in a second position of the locking element (11) for releasing the sash frame (3).

Description

[0001] The invention relates to a roof window with a frame and a sash frame, which is pivotably mounted on the frame about at least one axis of rotation by means of at least one pivoting arm, wherein a support arm engages the pivoting arm on one side and is mounted on the frame on the other.

[0002] The prior art includes, for example, the publication EP 0 679 774 A1. This relates to a top-hung roof window in which the sash is rotatably supported by two arms pivotally mounted at the upper end of the frame. In the pivot position, the sash is additionally held by pivot pins that are slidably guided in grooves on the side mullions of the frame. In the tilt position, the sash is rigidly connected to the arms. To increase comfort and improve ease of use, the grooves are designed without upper limits, and the pivot pins can be longitudinally displaced along the side mullions by operating a handle so that they are located within the grooves in the pivot position and outside the grooves in the tilt position.The handle simultaneously activates coupling elements that firmly connect the window sash to the arms in the folding position and release this connection in the swing position.

[0003] Furthermore, the publication EP 2 752 549 A1 shows a top-hung roof window comprising a frame and a sash. The sash is rotatably connected to the frame by means of a hinge. The roof window includes an elongated element designed to be displaced longitudinally when the sash rotates relative to the frame. The elongated element is elastically prestressed to balance the sash in any open position of the roof window. The roof window is equipped with a linear actuator comprising a linearly movable part with an endpoint. The endpoint is connected to an endpoint of the elongated element, either permanently or releasably.

[0004] The object of the invention is to propose a roof window which offers advantages over known roof windows, in particular being motor-driven, yet always allowing for convenient manual adjustment. It is especially preferred that the roof window, from a state opened by means of a drive, can also be closed quickly and reliably without the drive.

[0005] This is achieved with a roof window having the features of claim 1. The support arm is articulated to a slide guided linearly on the tilt arm, which can be moved in a displacement direction by means of an electric drive arranged on the sash frame for moving the sash frame relative to the frame. The slide comprises a first slide part coupled to the drive and a second slide part coupled to the support arm. In a first position of a locking element, the two slide parts are positively coupled to each other for drive-related coupling of the sash frame to the drive, and in a second position of the locking element, they are decoupled from each other for releasing the sash frame. The locking element can be moved between the first and second positions by means of an operating lever.

[0006] The roof window is, for example, in the form of a residential roof window. Its essential components are the frame and the sash. The sash typically supports glazing, which can be single glazing or multiple glazing, particularly double or triple glazing. The glazing is, for example, enclosed by mullions of the sash, specifically two vertical mullions and two horizontal mullions. The frame preferably also has two vertical mullions and two horizontal mullions. For both the sash and the frame, two mullions are connected to each other; in particular, each vertical mullion is connected to each horizontal mullion.

[0007] A roof window is designed and installed on or in the roof of a building, particularly a residential building. The roof lies between the exterior environment and the interior of the building, thus separating them. 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. The battens can be divided into counter battens and purlins, although the presence of counter battens is purely optional. The purlins are typically arranged perpendicular to the rafters and attached to them. The counter battens, on the other hand, preferably run parallel to the rafters.

[0008] 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 material might consist of a variety of tiles, roofing stones, shingles, or similar components. Towards the interior, the roof structure is typically bounded by an interior wall. This interior wall is attached to the roof structure on its interior-facing side.

[0009] When installing a roof window, it is inserted, for example, into a roof opening previously created in the roof. Preferably, after installation, it is supported by at least one of the rafters, for example, via at least one of the roof battens. Particularly preferably, the roof window is fastened to the rafter and / or the roof batten after installation, especially by screwing. The frame is designed and constructed for fixed installation on the roof or in the roof opening. The sash, on the other hand, is movable relative to the frame, namely pivotable about at least one axis of rotation.

[0010] For example, the sash frame can pivot relative to the frame around exactly one axis. In roof window installations, this axis is located on the top of the sash frame or at least in the upper third of the frame. Such a roof window can also be called a top-hung window. Additionally, the sash frame can be pivoted relative to the frame around a second axis, one that differs from the first. This second axis might be located, for example, in the middle third of the sash frame. If the sash frame can pivot around both the first and second axes, the roof window is designed as a top-hung, pivoting window.

[0011] At least one pivoting arm serves to pivot the sash frame relative to the frame. Preferably, the roof window has several pivoting arms, in particular two pivoting arms, which are arranged on opposite sides of the sash frame and thus support it between them. To pivot the sash frame about the first axis of rotation, the pivoting arm is rotatably mounted on the frame, specifically about the first axis of rotation. This means that the sash frame pivots together with the pivoting arm when pivoting about the first axis. To pivot about the second axis of rotation, the sash frame is preferably rotatably mounted on the pivoting arm, specifically about the second axis of rotation. This means that the sash frame can pivot independently of the pivoting arm about the second axis of rotation relative to the frame.The following discussion focuses solely on the tilt-opening mechanism of the roof window, i.e., the pivoting of the sash relative to the frame around the first axis of rotation. However, the roof window can optionally be designed and configured for pivot opening, i.e., for the pivoting of the sash relative to the frame around the second axis of rotation.

[0012] To assist in the tilting mechanism and / or to hold the sash in an open position, the roof window features a support arm. This arm engages the tilting arm on one side and is mounted to the frame on the other. Specifically, it is rotatably mounted to the frame. If multiple tilting arms are present, multiple support arms can, of course, be provided. For example, each of the multiple tilting arms has a support arm that engages with it and is also mounted to the frame so that it can be moved linearly. Preferably, the multiple support arms are mounted to different frame members, particularly different vertical members.

[0013] To enable automatic or mechanical pivoting of the sash frame, the support arm is articulated to the carriage, which is guided linearly on the tilting arm. The carriage can be moved linearly by means of the electric drive. The roof window is designed such that the sash frame is moved or pivoted by the linear movement of the carriage. It is possible that, in the case of multiple support arms, only one of the support arms is assigned such a carriage and the electric drive. However, it is also possible that each of the support arms has its own carriage and drive. In this case, the carriages and drives are preferably arranged on different members of the sash frame, in particular on different vertical members of the sash frame.

[0014] The support arm is pivotally mounted to the carriage about a pivot axis. To open the skylight using the drive, the drive is operated such that the pivot axis of the support arm on the carriage is shifted away from the first pivot axis, thus increasing the distance between the pivot axis of the support arm and the first pivot axis. To close the skylight, the drive is operated to shift the pivot axis of the support arm towards the first pivot axis, thus decreasing the distance between the pivot axis and the first pivot axis. A particularly preferred design is that the skylight can be opened manually despite the electric drive, i.e., without operating the drive.

[0015] After the roof window has been opened using the electric drive, closing it is normally only possible using the same electric drive. If manual closing of the roof window is to be enabled from the open position of the sash achieved by the electric drive, it is necessary to decouple the support arm from the electric drive. In the roof window described here, this is achieved through a special design of the sliding mechanism.

[0016] The carriage comprises a first carriage section and a second carriage section. The first carriage section is coupled to the drive, whereas the second carriage section is connected to the support arm. Specifically, the connection between the drive and the first carriage section and the connection between the support arm and the side carriage section are both rigid and / or permanent. The first carriage section can therefore only be moved relative to the drive by means of the first drive; movement of the second carriage section is only possible together with the support arm.

[0017] The two slide parts are now designed to be detachably connected. This is achieved using a locking element, which positively couples the two slide parts in its first position, while in its second position they are decoupled. In the first position of the locking element, the sash frame can therefore be moved using the electric drive. In the second position, however, the drive is decoupled from the sash frame; moving the sash frame using the drive is no longer possible.

[0018] Both the first and second slide sections are guided linearly along the extension arm. Each slide section can be mounted independently on the extension arm, or it can be mounted solely via the other slide section. This allows for a simple and compact design of the slide.

[0019] The described design of the roof window allows for reliable and rapid closing, even after the roof window has been opened using the electric drive and the sash frame has been moved into its open position. To do this, the locking element simply needs to be moved from the first position to the second position. After closing the roof window in this way, the drive can be re-engaged to move the sash frame just as easily. This simply requires moving the locking element from the second position back to the first position. For example, this can be achieved by opening the roof window until the sash frame reaches its position before closing, at which point the locking element can be moved back into its first position.

[0020] A further development of the invention provides that the locking element is arranged to be displaceable in an actuation direction on a guide pin attached to the first slide part and, in its first position, engages positively in a locking recess of a connecting element rigidly connected to the second slide part. The locking element is displaceably mounted on the first slide part, namely in the actuation direction. This means that the locking element can be displaced in the actuation direction between the first position and the second position and vice versa. The actuation direction is preferably perpendicular to the displacement direction, or at least it is angled with respect to it, i.e., it is at an angle to it that is greater than 0° and less than 180°.

[0021] The guide pin serves to support the detent element on the first slide section. This guide pin is rigidly attached to the first slide section. For example, the detent element at least partially, and in particular completely, surrounds the guide pin circumferentially with respect to the direction of actuation. For example, the detent element may be a hollow cylinder, in particular a hollow circular cylinder. The connecting element is rigidly attached to the second slide section. The detent recess is formed in the connecting element, in which the detent element is arranged in its first position.

[0022] The detent recess is preferably adapted to the detent element in terms of shape and dimensions. This means that when the detent element engages in the detent recess, an edge defining the detent recess rests against the detent element, at least partially, in such a way that displacement of the first slide part relative to the second slide part in the direction of displacement is prevented. Particularly preferably, the edge of the detent recess rests against the detent element continuously when the latter is in the first position. With the aid of the connecting element and the detent recess formed therein, a reliable coupling of the two slide parts with each other is achieved in the first position of the detent element.

[0023] A further development of the invention provides that the locking recess is part of a closed-edge guide recess of the connecting element, which is penetrated by the guide pin. The guide recess is formed with closed edges in the connecting element. This means that a continuous edge bounding the guide recess is formed, i.e., it has no interruption. The guide recess preferably has its greatest extent in the direction of displacement. The locking recess is part of the guide recess. In other words, the guide recess forms the locking recess.

[0024] Preferably, the guide recess away from the detent recess has dimensions that differ from those of the detent recess, particularly in a transverse direction perpendicular to both the displacement and actuation directions. Accordingly, the guide recess away from the detent recess has a smaller width than the detent recess itself. The guide recess is penetrated by the guide pin attached to the first slide part, regardless of the position of the detent element and regardless of the relative position of the two slide parts. The guide pin thus serves to support the connecting element on the first slide part, so that the first and second slide parts are held captive to each other via the connecting element. This allows for a particularly simple design.

[0025] A further development of the invention provides that the connecting element is mounted on the first slide part so as to be linearly displaceable in the displacement direction by means of a guide pin that extends through the guide recess and is attached to the first slide part, wherein a guide collar of the guide pin has larger dimensions perpendicular to the displacement direction than the guide recess. The guide pin is provided in addition to the guide pin and serves to improve the mounting of the connecting element on the first slide part. The guide pin, like the guide pin, is rigidly attached to the first slide part, but is arranged at a distance from it.

[0026] The guide pin engages the guide recess in such a way that the first slide section of the connecting element and the guide collar of the guide pin are located on the other side. The first slide section and the guide collar are thus arranged on opposite sides of the connecting element. This ensures that the connecting element is reliably held between the first slide section and the guide collar. Preferably, the guide pin is designed such that the connecting element is permanently in contact with both the first slide section and the guide collar. In other words, the connecting element is forced by the guide collar of the guide pin towards the first slide section and, in particular, against the first slide section itself. For this purpose, the guide collar has larger dimensions than the guide recess, namely perpendicular to the direction of displacement, preferably in the transverse direction already mentioned.

[0027] The guide collar is designed such that it rests against the connecting element on opposite sides of the guide recess. It thus overlaps opposite areas of the edge of the guide recess. For example, the guide pin is spaced from the guide pin at a distance of at least twice the width of the guide recess. This ensures particularly reliable guidance. Furthermore, it is preferably provided that the guide collar extends from a base body of the guide pin, which passes through the guide recess and is attached to the first slide part on the side of the connecting element facing away from the guide collar. The base body has transverse dimensions that correspond to, or are only slightly smaller than, the dimensions of the guide recess in this direction.Preferably, the base body is permanently in contact with the edge of the guide recess on opposite sides. This further improves the bearing of the two slide parts against each other.

[0028] A further development of the invention provides that the detent element is supported on a head of the guide pin by a spring element, the spring element pushing the detent element towards the first position. The spring element bears against the detent element on one side and against the guide pin on the other, more precisely against the head of the guide pin. The spring element is, for example, a compression spring. Accordingly, the detent element is pushed towards the first slide part and thus towards the first position.

[0029] For example, the locking element has an annular recess, the side of which facing away from the head of the guide pin is bounded by a base. The spring element extends from the head of the guide pin through the annular recess and rests against this base. For instance, the spring element engages the guide pin on one side and is partially engaged by the locking element on the other. This effectively prevents the spring element from tilting.

[0030] A further development of the invention provides that the locking element has a collar against which the operating lever, which encompasses the locking element, is supported. The collar extends radially outwards from a base element of the locking element with respect to the direction of actuation. The locking element is encompassed at least partially, and in particular completely, by the operating lever. For this purpose, the operating lever has a recess, which is, for example, designed with closed edges. The base body of the locking element is arranged in the recess so that the edge defining the recess bears against the collar, at least temporarily. This ensures that the operating lever is securely attached to the locking element.

[0031] The operating lever, for example, has an actuation area and a control area. The actuation area contains the recess and rests, at least partially, against the collar. The control area, on the other hand, serves to operate the lever by a user of the skylight. For this purpose, the control area may have a non-slip surface structure, in particular a ribbed surface, which simplifies operation by the user. The actuation area and the control area are preferably angled towards each other such that the operating lever rests against one of the slide parts and / or the connecting element at a transition between the actuation area and the control area.By shifting the operating area towards the connecting element, the locking element is correspondingly shifted in the opposite direction, namely away from the connecting element and thus towards the second position. The described design of the roof window enables particularly simple and convenient operation.

[0032] A further development of the invention provides that the first and second slide parts have the same cross-section on their facing sides and are arranged abutting each other in at least one position. Using the same cross-section for the first and second slide parts results in a particularly advantageous appearance of the skylight, because they are arranged so that they are visible when the skylight is open. The abutting arrangement of the slide parts also contributes to a pleasing appearance. The abutting arrangement means that the two slide parts are in contact with each other at their end faces in at least one position. Preferably, the slide parts are either abutting each other or spaced apart from each other in each of their positions.Therefore, the two slide parts are not designed to overlap in any of their possible positions. This allows for a compact design.

[0033] A further development of the invention provides that the first slide part and the second slide part are each U-shaped, and the connecting element is arranged in an interior space bounded by the first and second slide parts. Each slide part thus has three legs, with, for example, two of the legs being referred to as edge legs and the remaining leg as the connecting leg. The two edge legs are connected to each other via the connecting leg in such a way that the U-shape is formed. In particular, the edge legs are thus attached to each other exclusively via the connecting leg. The two edge legs and the connecting leg define the interior space of the respective slide part.The connecting element is arranged in the interior, preferably such that it rests against both the connecting leg and the two edge legs, preferably sliding against the first slide part. This provides excellent longitudinal guidance of the connecting element and also of the two slide parts relative to each other.

[0034] A further development of the invention provides that the connecting element is U-shaped, with two edge legs connected to each other via a connecting leg, wherein the edge legs and the connecting leg each bear against a corresponding leg of the first slide part for longitudinal guidance. The connecting element is also U-shaped and, analogous to the slide parts, has edge legs and connecting legs. Here, too, the edge legs are connected to each other via the connecting leg, and in particular, are attached to each other exclusively via the connecting leg. To achieve particularly good longitudinal guidance of the connecting element on the first slide part, the connecting leg of the connecting element now rests against the connecting leg of the first slide part.At the same time, each of the two edge legs of the connecting element rests against one of the connecting legs of the first slide part, so that tilting of the connecting element relative to the first slide part is effectively prevented.

[0035] A further development of the invention provides that a spindle nut is located on the side of the first slide section facing away from the second slide section, into which a spindle of the electric drive engages. The electric drive, in particular, has an electric motor designed and configured to drive the spindle. The spindle, which is designed as a threaded spindle, engages with the spindle nut and is connected to it in a drive-related manner. A rotary movement of the spindle causes a linear movement of the spindle nut and, consequently, of the first slide section. This enables the efficient opening and closing of the skylight by means of the electric drive.

[0036] The invention is explained in more detail with reference to the exemplary embodiments shown in the drawing, without limiting the invention. The drawing shows: Figure 1 is a schematic representation of a section of a roof window which has an electric drive coupled to a support arm via a slide; Figure 2 is a schematic representation of the slide, wherein a first slide part and a second slide part are arranged in a first position relative to each other; Figure 3 is a schematic detailed sectional view of a section of the slide; and Figure 4 is a schematic representation of the slide, wherein the two slide parts are arranged in a second position relative to each other.

[0037] The Figure 1Figure 1 shows a schematic representation of a roof window 1, which has a frame 2 and a sash 3. The sash 3 is pivotally mounted on the frame 2 via a pivot arm 4, specifically about an axis of rotation not shown in detail. The pivot arm 4 is arranged and attached to a mullion 5 of the sash 3. An electric drive 6 is located on the sash 3, in particular on the pivot arm 4, by means of which the sash 3 can be pivoted relative to the frame 2. The electric drive 6 is coupled via a slide 7 to a support arm 8, which is hinged to the frame 2 on its side facing away from the slide 7. Preferably, the support arm 8 is rotatably mounted on the frame 2.

[0038] It can be seen that the slide 7 has a first slide section 9 and a second slide section 10. The two slide sections 9 and 10 can be coupled to each other by means of a locking element 11, which can be moved between a first position and a second position by means of an operating lever 12. In the first position, the locking element 11 positively couples the two slide sections 9 and 10 to each other. In the second position, it releases the two slide sections 9 and 10 from each other, so that they can be moved independently of each other. In the first position of the locking element 9, a drive connection is thus established between the drive 6 and the second slide section 10. Since the support arm 8 is articulated to the second slide section 10, a corresponding drive connection exists between the drive 6 and the support arm 8.In the first position of the locking element 11, the support arm 8 can therefore be moved using the electric drive 6, whereas in the second position of the locking element 11, the support arm 8 is decoupled from the drive 6. Starting from the open position of the roof window 1 shown here, the roof window 1 can be closed manually by moving the locking element 11 from the first position to the second position, even without the electric drive 6.

[0039] The connection between the slide section 10 and the support arm 8 can also be indirect, in particular via a slider. In this case, the slide section 10 is connected to the slider, preferably rigidly. The support arm 8 is pivotally attached to the slider. The slider is preferably mounted on the sash frame 3 so as to be linearly displaceable. A spring, preferably a tension spring, preferably engages the slider, which assists in the manual opening of the roof window 1 and / or holds the sash frame 3 in its open position.

[0040] The Figure 2Figure 1 shows a schematic representation of the slide 7. It can be seen that the slide parts 9 and 10 are each U-shaped, such that the first slide part 9 has edge legs 13 and 14 and a connecting leg 15, and the second slide part 10 has two edge legs 16 and 17 and a connecting leg 18. For both slide parts 9 and 10, the edge legs 13 and 14 and 16 and 17, respectively, are perpendicular to the corresponding connecting leg 15 and 18. A connecting element 19, which is also U-shaped and accordingly has two edge legs 20 and 21 and a connecting leg 22, is arranged in an interior space bounded by the edge legs 13, 14, 16, and 17 and the connecting legs 15 and 18.

[0041] The two slide parts 9 and 10 are connected to each other, or rather mounted to one another, via the connecting element 19. For this purpose, the connecting element 19 is rigidly attached to the second slide part 10. A guide pin 23 and a guide bolt 24 extend from the first slide part 9 through a guide recess 25 formed in the connecting element 19. On the side of the connecting element 19 facing away from the first slide part 9, the guide pin 23 has a head 26 and the guide bolt 24 has a guide collar 27. At least the guide collar 27 is wider than the guide recess 25, thus ensuring reliable longitudinal guidance of the connecting element 19 on the first slide part 9. In addition to guiding the connecting element 19, the guide pin 23 also guides the locking element 11.Also visible is a spindle nut 28, which is arranged and attached to the side of the first slide part 9 facing away from the second slide part 10.

[0042] The Figure 3 Figure 1 shows a schematic sectional view through a section of the slide 7. It is clearly evident that the detent element 11 is movably mounted on the first slide part 9 by means of the guide pin 23. In particular, the detent element 11 engages a base body 29 of the guide pin 23, from which the head 26 extends outwards in a radial direction with respect to an actuation direction of the detent element 11. The detent element 11 is subjected to spring force by means of a spring element 30. The spring element 30 is supported on one side by the detent element 11 and on the other side by the guide pin 23, specifically by the head 26. The spring element 30 forces the detent element 11 into its first position shown here.

[0043] In the embodiment shown here, the locking element 11 has an annular recess 31, which is bounded by a base 32 in the direction away from the head 26. The spring element 30 extends from the head 26 through the recess 31 to the base 32 and is supported thereon. The recess 31 extends only partially through the locking element 11 in the axial direction with respect to the direction of actuation. Apart from the recess 31, the locking element 11 rests, at least partially, preferably continuously, against the guide pin 23, namely against its base body 29, in a sliding manner in the circumferential direction to provide longitudinal guidance for the locking element 11.

[0044] On the side of the detent element 11 facing away from the first slide part 9, the latter has a collar 33 that projects radially. The collar 33 serves to engage the operating lever 12 with the detent element 11. For this purpose, the operating lever 12 has a recess 34 in which the detent element 11 is arranged. However, the recess 34 has smaller dimensions than the collar 33, so that when the operating lever 12 is actuated, it rests against the collar 33 and pushes the detent element 11 out of the first position towards the second position. It can also be seen that the operating lever 12 has two areas 35 and 36 angled relative to each other, with area 35 being the operating area and area 36 the actuation area. In the operating area 35, the operating lever 12 has, for example, a surface structure 37.

[0045] The Figure 4Figure 1 shows a schematic representation of the slide 7, with the two slide parts 9 and 10 arranged in a second position relative to each other. It is now clear that a detent recess 38 is formed in the connecting element 19. This recess is part of a guide recess 39. It is clearly evident that the guide recess 39 has a greater width in the area of ​​the detent recess 38 than elsewhere. In particular, the guide recess 39 is designed such that the detent element 11 can only move into the first position if it is aligned with the detent recess 38. If, however, the detent element 11 is located away from the detent recess 38, it is held in its second position or at least prevented from moving into the first position.

[0046] The described design of the roof window 1 has the advantage that, firstly, the sash frame 3 can be automatically or mechanically moved relative to the frame 2. Furthermore, it is also possible to close a roof window 1 opened by means of the electric drive 6 even if the drive 6 is not functioning, namely by decoupling the two slide parts 9 and 10 from each other by actuating the operating lever 12, which moves the locking element 11 from its first position to its second position. Thus, closing the roof window 1 is possible at any time, even if the drive 6 is not functioning or defective.

Claims

1. Skylight window (1) with a blind frame (2) and a sash frame (3), which is pivotably mounted on the blind frame (2) about at least one axis of rotation by means of at least one extension arm (4), wherein a support arm (8) engages on the extension arm (4) on the one hand and is mounted on the blind frame (2) on the other hand, wherein the support arm (8) is articulated on a carriage (7) which is guided linearly on the extension arm (4) and which can be moved in a displacement direction to move the sash frame (3) with respect to the blind frame (2) by means of an electric drive (6) arranged on the sash frame (3), wherein the carriage (7) comprises a first carriage part (9) coupled to the drive (6) and a second carriage part (10) coupled to the support arm (8), which are form-fittingly coupled to one another for drivable coupling of the sash frame (3) to the drive (6) in a first position of a latching element (11), which can be moved between the first position and a second position by means of an operating lever (12), and are decoupled from one another in the second position of the latching element (11) for releasing the sash frame (3).

2. Skylight window according to claim 1, characterised in that the latching element (11) is arranged displaceable in an actuating direction on a guide tappet (23) fastened to the first carriage part (9) and, in its first position, engages form-fittingly in a latching recess (38) of a connecting element (19) rigidly connected to the second carriage part (10).

3. Skylight window according to claim 2, characterised in that the latching recess (38) is part of an edge-closed guide recess (39) of the connecting element (19), which is engaged through by the guide tappet (23).

4. Skylight window according to claim 3, characterised in that the connecting element (19) is mounted linearly displaceable in the displacement direction on the first carriage part (9) by means of a guide pin (24) which engages through the guide recess (39) and is fastened to the first carriage part (9), wherein a guide collar (27) of the guide pin (24) has larger dimensions perpendicular to the displacement direction than the guide recess (39).

5. Skylight window according to one of claims 2 to 4, characterised in that the latching element (11) is supported on a head (26) of the guide tappet (23) via a spring element (30), wherein the spring element (30) forces the latching element (11) in the direction of the first position.

6. Skylight window according to one of the preceding claims, characterised in that the latching element (11) has a collar (33) on which an operating lever (12) engaging around the latching element (11) is supported.

7. Skylight window according to one of the preceding claims, characterised in that the first carriage part (9) and the second carriage part (10) comprise the same cross-section on sides facing one another and are arranged in abutting relationship to one another in at least one position.

8. Skylight window according to one of claims 2 to 7, characterised in that the first carriage part (9) and the second carriage part (10) are each configured in a U-shape and the connecting element (19) is arranged in an interior space delimited by the first carriage part (9) and the second carriage part (10).

9. Skylight window according to claim 8, characterised in that the connecting element (19) is configured in a U-shape, wherein two edge limbs (20, 21) are connected to one another via a connecting limb (22), wherein the edge limbs (20, 21) and the connecting limb (22) each contact a corresponding limb (13, 14, 15) of the first carriage part (9) for longitudinal guidance.

10. Skylight window according to one of the preceding claims, characterised in that a spindle nut (28), in which a spindle of the electric drive (6) engages, is present on a side of the first carriage part (9) facing away from the second carriage part (10).

Images