Roof window

Abstract

A roof window comprising a fixed main frame, a sub-frame and a lifting device comprising a lift arm, a push arm, an adjustment system and a carriage arm, the carriage arm and the lift arm being connected at an angle, where the angle is configured to be changed to a second angle by adjusting the position of the first end of the carriage arm by means of the adjustment system.

Description

TECHNICAL FIELD

[0001] The utility model relates to roof window, this roof window has fixed main frame, vice frame and lifting device, the lifting device includes the lifting arm of insertion between main frame and vice frame, the lifting arm has lifting arm first end and lifting arm second end, lifting arm second end is connected to vice frame in rotatable mode, the lifting device still includes spring assembly, spring assembly is configured to be coupled to slide, the lifting device still includes push arm, the push arm has push arm first end and push arm second end, push arm second end is connected to lifting arm in rotatable mode, and the lifting device still includes having slide arm, slide arm has slide arm first end and slide arm second end, slide arm second end is connected to slide in rotatable mode. BACKGROUND

[0002] Windows for installation on inclined roof surfaces can be provided in a plurality of variants and comprise more or less complex operating structures to allow opening of the vice frame or sash and to implement other functions such as ventilation. Such roof windows include the type hinged at or near the centre, the top-hinged type and, finally, the roof window which is top-hinged during normal operation but in which the sash can perform a rotation movement substantially at the central axis for cleaning or for providing an alternative operating mode. The top-hinged type of roof window has a first axis of articulation provided by the top-hinged device to provide a first operating condition, while in a second operating condition the rotation of the sash is performed by means of an intermediate frame in which the sash is articulated to provide a second axis of articulation. Typically, one of the articulations of the device will be located on either side of the roof window to define a substantially horizontal axis of articulation.

[0003] Examples of top-hinged windows with a second operating condition are disclosed, for example, in the Applicant's WO-A-89 / 10460, EP 0 733 146 B1, EP 1 873 323 B1, EP 2 762 665 A2 and WO 2019 101 281 A1. In order to enable the window sash to rotate approximately 180° to a convenient cleaning position, the sash structure is connected with an intermediate frame having a frame arm which, in the closed position of the window, is positioned between the upper portion of the frame and the sash side members and, during normal use of the window as a top-hung window, follows the sash side members.

[0004] Furthermore, the force required to open and operate the roof window is affected by the inclination of the roof on which the window is installed.

[0005] In roof windows that operate fully or partially about a hinge axis at the top, it is known to balance at least part of the weight of the movable parts by means of a lifting device. The purpose of such an arrangement is to facilitate opening of the window, and the dimensions can be chosen such that the spring can balance the top-hinged frame in the desired open position.

[0006] Such a lifting device is disclosed, for example, in the applicant's WO 2019 / 101281 Al, in which a spring assembly operates as a force balancing element for the sash carrying frame by operating on a lifting arm attached to the frame.

[0007] EP 4 215 706 Al discloses another example of a support system for a window.

[0008] However, despite the lifting devices in the above examples being able to provide the desired force balance to some extent, there is still room for improvement. Utility model content

[0009] Against this background, it is the object of the utility model to provide a roof window with a lifting device that has increased design flexibility, allowing the desired movement pattern and easy operation, while at the same time being adjustable to different roof inclinations.

[0010] This is achieved by a roof window of the kind mentioned in the introduction, which is further characterized in that the lifting device further comprises an adjustment system, the lifting arm first end is connected to the carriage in a rotatable manner, the carriage is connected to the main frame in a slidable manner in a carriage guide, the carriage arm first end is connected to the lifting arm in a rotatable manner via the adjustment system, and the carriage arm and the lifting arm are connected to form a first angle between each other, wherein the angle is configured to be changed to a second angle by adjusting the position of the carriage arm first end by means of the adjustment system.

[0011] This arrangement of arms in the form of a lifting arm, a push arm and a carriage arm provides an alternative connection of the lifting arm to the carriage and a general solution for adjustment to roof inclinations. The combination of the lifting arm second end being rotatably fixed to the sub-frame and the push arm used being rotatably fixed at one end to the carriage guide and at the other end to the lifting arm provides a rotation point around the push arm, allowing the lifting arm first end to have greater freedom while still having the necessary stability to securely lift the sub-frame, and without requiring large forces to operate the roof window.

[0012] The carriage arm provides a link between the lifting arm and the carriage. Thus, the lifting arm is rotatably connected to the carriage arm first end and the carriage is rotatably fixed to the carriage arm second end. Thus, during opening and closing of the roof window, the lifting arm will rotate about the carriage arm connection. The carriage arm has the advantage of increasing the mobility of the lifting arm relative to the carriage, as the carriage arm acts as a link connection between the carriage and the lifting arm. The carriage arm is preferably connected to the lifting arm at a point close to the lifting arm first end.

[0013] Other presently preferred embodiments and further advantages will be apparent from the detailed description and drawings that follow. BRIEF DESCRIPTION OF DRAWINGS

[0014] In the following description, embodiments of the present application will be described with reference to the accompanying drawings, in which:

[0015] FIG. 1A is a perspective view from the inside of a roof window in an embodiment of the present application.

[0016] FIG. 1B is a perspective view from the outside of a roof window in an embodiment of the present application.

[0017] FIG. 1C is a side view of a roof window in an embodiment of the present application, with the sash in an open position.

[0018] FIG. 2A is a side view of a lifting device for a roof window in an embodiment of the present application in an open position.

[0019] FIG. 2B is a side view of a lifting device for a roof window in an embodiment of the present application in a closed position.

[0020] FIG. 3A is a perspective exploded view of the connection between the adjusting screw, the adjusting bushing and the adjusting arm in an embodiment of the present application.

[0021] FIG. 3B is a perspective exploded view of the connection between the adjusting screw and the lifting arm arranged in an opening of the lifting arm in an embodiment of the present application.

[0022] FIG. 3C is a perspective exploded view of the connection between the carriage arm, the adjusting system and the lifting arm in an embodiment of the present application.

[0023] FIG. 4A is a side view of the lifting arm connected by the adjusting system and the carriage arm in a default position.

[0024] FIG. 4B is a side view of the lifting arm of FIG. 4A , wherein the carriage arm is rotated relative to the lifting arm.

[0025] FIG. 4C is a side view of the lifting arm of FIG. 4A and FIG. 4B , wherein the adjustment system is adjusted, whereby the point of connection between the adjustment system and the carriage arm is changed.

[0026] FIG. 5 is an exploded perspective view of the connection between the lifting arm and the carriage arm.

[0027] FIG. 6 is a perspective view of an assembly comprising a lifting arm, a carriage arm, an adjustment arm and an adjustment system according to an embodiment of the present utility model.

[0028] FIG. 7 is a perspective view of the shown lifting device previously mounted in the carriage in connection with the carriage guide according to an embodiment of the present utility model.

[0029] FIG. 8 is a perspective view of a lifting device for a roof window according to an embodiment of the present utility model, which shows the centre plane P.

[0030] FIG. 9 is a front view of a lifting device for a roof window according to an embodiment of the present utility model, which shows the centre plane P and the symmetrical arrangement of the lifting arm, the carriage arm and the adjustment arm according to an embodiment of the present utility model.

[0031] FIG. 10A is a close-up side view of the adjustment screw arranged in the opening of the lifting arm according to an embodiment of the present utility model.

[0032] FIG. 10B shows an embodiment of FIG. 10A , wherein a tool is inserted to provide an external force on the adjustment system.

[0033] FIG. 10C shows an embodiment of FIG. 10A and FIG. 10B , wherein the tool acts on the adjustment screw wheel.

[0034] FIG. 10D shows an embodiment of FIGS. 10A-10C , wherein the external force is provided by means of rotating an external tool, whereby the adjustment screw is adjusted.

[0035] FIG. 10E shows an embodiment of FIGS. 10A-10Dembodiments, the position of the carriage arm on the adjustment screw has been changed by means of an adjustment of the adjustment screw, thereby changing the angle between the carriage arm and the lifting arm.

[0036] FIGS. 11A-11B The changing angle between the carriage arm and the lifting arm when adjusting the adjustment screw is shown.

[0037] FIG. 12 is a close-up bottom perspective view of the adjustment system according to an embodiment in the utility model. DETAILED DESCRIPTION

[0038] In the following, embodiments of the lifting device and the roof window will be described in more detail. When referring to the drawings, the terms upper, lower, upward, downward, top and bottom are adopted with respect to how the drawings are shown. The front view is adopted from the hinge and towards the window frame. Thus, the rear view is adopted when looking from the frame towards the hinge. If not mentioned otherwise, the longitudinal direction refers to the longitudinal along the length of the member. It should be understood that the arrangement shown in horizontal orientation is not the normal orientation when the window is installed on a sloping roof. The inner side faces towards the interior of the building where the window is installed, while the outer side faces in the opposite direction towards the exterior of the building.

[0039] Throughout the various embodiments and drawings described herein, like reference numerals refer to like elements.

[0040] Reference is first made to FIG. 1A and FIG. 1B a roof window 100 is shown. The roof window 100 is intended to be installed in or on a sloping roof surface (not shown).

[0041] The roof window 100 comprises a main frame 1, a secondary frame, which will be referred to as a sash 2 in the following, but can also comprise an intermediate frame, which is partly connected to the main frame 1, partly to a separate glass carrying unit which serves as a sash.

[0042] Typically, the roof window comprises a window pane which comprises at least two layers of glass, preferably at least three layers of glass. The window can comprise an insulating glass unit (IGU).

[0043] The main frame 1 comprises a set of frame members, which comprises a top frame member, two side frame members and a bottom frame member. Correspondingly, the sash 2 comprises a set of sash members, which comprises a top sash member, two side sash members and a bottom sash member. Although the main frame 1 and the sash 2 are described as rectangular structures, some of the principles of the presented concept can also be applicable to other geometrical shapes.

[0044] The pane 4 comprises a plurality of edge portions that are generally associated with the members of the sash 2. The outer pane surface 4e defines the plane of the roof window 100 in the assembled state of the roof window 100. The assembled state of the roof window 100 is achieved when the main components of the main frame 1 and the sash 2 have been assembled and the main frame 1 and the sash 2 are connected to each other, for example in the installed position in which the roof window 100 is ready for use. Correspondingly, the assembled state of the sash 2 is achieved once the main components of the sash 2 have been assembled and the assembled state of the main frame 1 is achieved when the main components of the main frame 1 are assembled. The term "main components" is to be understood as including the main components of the roof window that are required to perform all operational functions, but not accessories or ancillary equipment.

[0045] The inner pane surface 4i faces inwards, generally towards a room of a building below the roof surface on which the roof window 100 is installed.

[0046] In the embodiment shown, the sash 2 is openable relative to the main frame 1 to obtain one or more open positions. In such open positions, the sash 2 and the pane 4 are moved out of the plane of the roof window 1. As will be described hereinafter, the sash 2 is shown as top-hung, i.e. during normal use the sash 2 is rotated at or near the top frame members and the top sash members at a generally horizontal axis of articulation at the top of the roof window 100. However, it is conceivable that some of the principles presented for the roof window are applied to different types of windows having other opening modes.

[0047] FIG. 1A Further details shown in the middle include an operating assembly 5, here shown as a handle. Other operating assemblies can also be present.

[0048] FIG. 1B Also shown in the middle are representative mounting brackets forming part of a plurality of mounting brackets that form a load transfer connection between the roof window 100 and the surrounding roof structure (not shown). Such roof structure can include rafters and battens, plywood or other construction materials.

[0049] An insulating frame 7 is shown. Insulation by means of an insulating frame is optional and can be provided along only some of the frame members or can be provided around all four frame members as shown.

[0050] With reference to FIG. 1C , the roof window 100 is shown in a top-hung configuration. The roof window is top-hung, i.e. hinged at the top by means of an articulation assembly (not shown) connecting the main frame with the sub-frame.

[0051] The hinge assembly is configured such that it allows the sash 2 to be top-hung in a first operating state corresponding to normal use. That is, during normal use, the sash 2 is rotated about a substantially horizontal first axis of articulation at or near the top frame member and the top sash member between a closed position and an open position.

[0052] To assist the user in opening the sash 2, a lifting device 10 is provided, as will be described hereinafter. Reference is now also made to FIG. 2A The lifting device 10 comprises a lifting arm 14 interposed between the main frame 1 and at least one secondary frame, here the sash 2. The lifting device 10 further comprises a spring assembly 20 and a push arm 40, the spring assembly 20 being configured to be coupled to a carriage 30.

[0053] In FIG. 2A an embodiment of the lifting device 10 is shown from a side view, with one side of the carriage guide 16 removed, thereby showing the carriage 30 in connection with the spring assembly 20. The lifting arm 14 is interposed between the main frame 1 and the sash 2, such that the lifting arm 14 has a lifting arm first end portion 14a connected with the carriage 30 and a lifting arm second end portion 14b connected with the sash 2.

[0054] The lifting arm 14 is connected to the carriage guide 16 via the push arm 40. The push arm 40 has a push arm first end portion 40a rotatably connected to the carriage guide 16 and a push arm second end portion 40b rotatably connected to the lifting arm 14, in the shown embodiment by means of a first rivet 42i to the carriage guide 16 and a second rivet 42ii to the lifting arm 14, as FIG. 5 is shown in more detail.

[0055] The carriage 30 is attached to the spring assembly 20, which is arranged to exert a force on the carriage 30 in a state of use of the roof window 100. The carriage 30 can be uncoupled from the spring assembly 20, as FIG. 2BAs an example, this can be an advantage during installation of a roof window, in which the spring force acting on the carriage 30 can make it difficult to operate the roof window. In the case that the lifting device is installed in a roof window according to its intended use, the carriage 30 and the spring assembly 20 are initially in an uncoupled state. The spring assembly 20 and the carriage 30 are then coupled by opening the roof window causing the carriage 30 to slide towards the coupling device, such as the hook 21 attached to the spring included in the spring assembly 20. This coupling can be achieved, for example, by the carriage 30 including a coupling plate 32 for coupling the carriage 30 to the spring assembly 20. Opening the roof window causes the carriage 30 to engage with the hook 21 and, once the roof window is subsequently closed, the carriage 30 will slide in a direction away from the spring assembly 20 towards the top hinge of the roof window 100 and the spring now coupled to the carriage 30 will exert a pulling force on the carriage 30 and provide resistance against closing of the roof window.

[0056] The pulling force of the spring assembly 20 and the weight of the movable parts of the roof window 100 are preferably balanced so that the sash 2 of the roof window 100 can be positioned in an open position without being forced to close by its own weight or being forced to open the roof window 100 further by the pulling force exerted by the spring of the spring assembly 20. This balance is influenced by the inclination of the roof on which the roof window is installed. The spring in the spring assembly 20 can be adjusted to balance the roof window to a specific roof inclination. If the roof window is installed on a roof with a different inclination than the intended inclination, the spring force acting on the carriage 30 will be unbalanced with the weight of the movable parts of the roof window. In one example, the spring can exert too much force on the window, thereby forcing the window to open further. In another example, the spring can be too weak and the window will close by its own weight. In both cases, the window can be difficult to operate for a user and be potentially dangerous.

[0057] To easily adjust the roof window 100 according to the roof inclination, an adjustment system 50 can be used. The adjustment system 50 can be used to adjust the roof window for roof inclinations in the range of 15° to 60°.

[0058] FIGS. 3A-4C An embodiment of the adjustment system 50 is shown in more detail in Fig. 2. The adjustment system 50 is connected to an adjustment arm 52, which in turn is connected to other components of the lifting device 10, as will be described in further detail below.

[0059] FIG. 3AAn adjustment screw 53 is shown, having an adjustment screw shaft 53i, an adjustment screw wheel 53ii, and an adjustment screw top 53iii. In the embodiment shown, the adjustment arm 52 is a two-part component comprising a first adjustment arm 521 and a second adjustment arm 522, and is coupled to the adjustment bushing 54.

[0060] FIG. 3B The assembly of the adjustment arm 52 and the adjustment bushing 54 is shown in connection with the lift arm 14, which here is formed to comprise a first lift arm 141 and a second lift arm 142. FIG. 3A The assembly of the adjustment arm 52 and the adjustment bushing 54 is shown in connection with the lift arm 14, which here is formed to comprise a first lift arm 141 and a second lift arm 142. FIG. 3B In the embodiment shown, the adjustment system 50, comprising the adjustment screw 53, is shown as being housed between the first lift arm 141 and the second lift arm 142, and in the opening 15. The adjustment arm 52 has an adjustment arm first end 52a, which is connected to the adjustment system 50 via the adjustment bushing 54. An adjustment arm second end 52b is rotatably connected to the lift arm 14, allowing the adjustment arm 52 to travel along a path in the opening 15 of the lift arm. In the embodiment shown, the opening 15 of the lift arm is arched, but in principle can have any shape that allows for proper movement. The adjustment screw wheel 53ii is housed in a separate opening 17 in the lift arm 14. Preferably, the adjustment screw is connected to the lift arm 14 via the adjustment screw top.

[0061] FIG. 3C The carriage arm 31 is shown, having a carriage arm first end 31a rotatably connected to the lift arm 14, and a carriage arm second end 31b rotatably connected to the carriage 30, which is not shown in the figure. The carriage arm 31 is connected to the adjustment bushing 54. In the embodiment shown, the carriage arm 31 is a two-part component, as will be described below. FIG. 3C

[0062] Thus, the adjustment arm 52 is arranged between the first lift arm 141 and the second lift arm 142 in the lift arm 14, and the carriage arm 31 is arranged outside of the lift arm 14.

[0063] FIGS. 4A-4C The assembly of the lift arm 14 and the carriage arm 31 in the embodiment shown is shown. FIGS. 3A-3C FIG. 4B The figure shows how the carriage arm second end 31b is arranged to rotate around the adjustment bushing 54, and FIG. 4C The figure shows how the carriage arm first end 31a is arranged to move along the adjustment screw shaft 53i when the adjustment screw 53 is adjusted.

[0064] FIG. 5 ​​A push arm 40 is shown, having a first end 40a configured for attachment to a carriage guide (not shown) and a second end 40b rotatably connected to a lifting arm 14. FIG. 5 In the middle, the push arm includes a first push arm 401 and a second push arm 402 arranged on opposite sides of the lifting arm 14. The lifting arm 14 is rotatably connected to the window sash 2 (not shown) by means of rivets 41. The connection between the lifting arm 14 and the window sash 2 is... FIG. 8 as well as FIGS. 10D-10E As shown in the image.

[0065] exist FIG. 6 The image shows an assembly of a lifting arm 14, a push arm 40, an adjustment system 50, an adjustment arm 52, and a carriage arm 31 according to one embodiment of the present invention.

[0066] Now refer to FIG. 7 This illustrates an embodiment in which the carriage 30 and push arm 40 are arranged in the carriage guide 16. FIG. 7 The carriage has a first front slide rail 701, a second front slide rail 702, and a rear slide rail 71. The first front slide rail 701 and the second front slide rail 702 are slidably connected to a front rail 43a located on each side of the carriage guide 16, and the rear slide rail 71 is slidably connected to a rear rail 43b located on each side of the carriage guide 16. In this embodiment, the first front slide rail 701 and the second front slide rail 702 included in the front slide rail 70 are shown as two separate slide rails, but in other embodiments they may be joined to form a single front slide rail 70.

[0067] FIG. 8 A lifting device 10 according to the present invention is shown, wherein a lifting arm 14 is inserted between a main frame 1 and a window sash 2. A carriage guide 16 extends along a length axis in the length direction L. When the window is in the closed position, the lifting arm 14 also extends along the length direction L. A height axis extends along a height direction H perpendicular to the length direction L. When the lifting device is installed in a roof window, the height axis extends perpendicular to the window pane of the roof window. The length axis and the height axis define a center plane P.

[0068] Typically, the lifting arm 14 in the illustrated embodiment includes a first lifting arm 141 and a second lifting arm 142 arranged symmetrically with respect to the central plane P. The lifting arm 14 is formed as at least a two-part component such that the forces exerted by the lifting arm 14 on the central plane P are balanced, thereby providing a favorable load distribution within the lifting device 10. That is, the forces generated by the weight of the movable parts of the roof window 100 are aligned with respect to the central plane P.

[0069] The push arms 40 comprise a first push arm 401 and a second push arm 402 arranged symmetrically with respect to the centre plane P. The carriage arms 31 comprise a first carriage arm 311 and a second carriage arm 312 arranged symmetrically with respect to the centre plane. Finally, the adjustment arms 52 comprise a first adjustment arm 521 and a second adjustment arm 522 arranged symmetrically with respect to the centre plane P and extending along the centre plane P, while the adjustment screw 53 extends in the centre plane P.

[0070] The symmetrical arrangement of the components of the lifting device provides a lifting device in which the forces from the panes and other movable components of the roof window are aligned with respect to the centre plane P. This ensures that the torque on the individual parts of the lifting device is minimised and the lifting device and roof window as a whole are stabilised.

[0071] Turning now to FIGS. 10A-10E , an embodiment comprising an adjustment system 50 according to the present disclosure is shown. The adjustment system 50 is shown as comprising an adjustment screw 53 arranged within the profile of the lifting arm 14 so as to be accessible via an opening in the lifting arm 14, as will be described below.

[0072] FIG. 10B It is shown how the adjustment system is adjusted by applying an external force. In this embodiment, the external force is applied to the adjustment screw wheel 53ii via the screw driver bit 60. In the embodiment shown in FIGS. 10A-10C , the lifting arm 14 is arranged to receive the screw driver bit 60 through an opening in the lifting arm 14. In the embodiment shown, the opening is provided as a space between the first lifting arm 141 and the second lifting arm 142, so that the screw driver bit 60 can be inserted from the back of the lifting arm 14. Thus, the adjustment system 50 is most easily adjusted when the roof window 100 is in the open position. The opening for such a screw driver bit can alternatively and / or additionally be arranged on the other side, such as the front, or on one or both sides of the lifting arm, for example via the opening 15 described above. By having an opening on the side of the lifting arm 14, the adjustment system 50 can be adjusted in both the open and closed positions of the roof window.

[0073] In FIG. 10D and FIG. 10E , it is shown how the adjustment system 50 is adjusted to change the position of the carriage arm first end 31a with respect to the lifting arm 14 by moving the carriage arm first end 31a along the adjustment screw 53, thereby changing the force balance between the pulling force from the spring assembly 20 and the weight of the window, so that the roof window 100 can be adjusted for different roof inclinations. Thus, the carriage arm first end 31a is shown with two different positions with respect to the lifting arm 14, corresponding to the adjustment for two different roof inclinations.

[0074] FIG. 11A and FIG. 11B It shows FIG. 10D and FIG. 10E The enlarged detailed view of the adjustment shown clearly illustrates that the carriage arm 31 and the lifting arm 14 are connected to form a first angle α1 between them, and that the first angle α1 formed between the carriage arm 31 and the lifting arm 14 is configured to become a second angle α2 when the adjustment system 50 is adjusted. In the illustrated embodiment, this is achieved by adjusting the position of the first end 31a of the carriage arm by means of the adjustment system 50. The first angle α1 can be considered as a starting angle or a predetermined angle, which is typically formed as part of the factory setting in the supplied state of the lifting device 10.

[0075] FIG. 12 A close-up bottom perspective view of the adjustment system is shown, clearly illustrating that the push arm 40 includes indicators for adjusting different roof slopes. In this embodiment, these indicators are numerical values ​​ranging from 15 to 60 degrees, corresponding to the respective degrees. These values ​​indicate and correspond to the desired roof slope at which the user should adjust the lifting device 10. By moving the position of the first end of the carriage arm on the adjusting screw 53 to a specific value, the user can adjust the roof window lifting device to the desired roof slope. FIG. 11A , FIG. 11B and FIG. 12 In the illustrated embodiment, the values ​​shown on the push arm are 15, 30, 45, and 60, corresponding to roof slopes of 15, 30, 45, and 60 degrees. Furthermore, the illustrated embodiment includes a marker indicating ascending or descending order of the values. In alternative embodiments, roof slope values ​​that are higher or lower than those indicated in the illustrated embodiment can be implemented.

[0076] List of reference numerals in the attached figures

[0077] 1. Main Framework

[0078] 2 window sashes

[0079] 4. Window panes

[0080] 4i Interior window pane surface

[0081] 4e External window pane surface

[0082] 5. Operating Components

[0083] 7. Insulation Frame

[0084] 10 Lifting Device

[0085] 14 Lifting Arm

[0086] 14a First end of lifting arm

[0087] 14b Second end of lifting arm

[0088] 15. Opening of the lifting arm

[0089] 16 Carriage Guide

[0090] 17. Separate openings

[0091] 20 Spring Assembly

[0092] 21 Hook-shaped components

[0093] 30 carriage

[0094] 31 Carriage Arm

[0095] 31a First end of carriage arm

[0096] 31b Second end of carriage arm 32 Connecting plate

[0097] 40 push arm

[0098] 40a Push Arm First End

[0099] 40b Push arm second end

[0100] 41 Rivets

[0101] 42i First Rivet

[0102] 42ii Second rivet

[0103] 43a Front Track

[0104] 43b rear track

[0105] 50 Regulation System

[0106] 52 Adjusting arm

[0107] 52a First end of adjusting arm

[0108] 52b Adjusting arm second end 53 Adjusting screw

[0109] 53i Adjusting Screw Shaft

[0110] 53ii Adjusting screw wheel

[0111] 53iii Top of adjusting screw

[0112] 54 Bushing

[0113] 57 Lifting arm rivets

[0114] 60 screwdriver bits

[0115] 70 front slide

[0116] 71 rear slide

[0117] 100 roof window

[0118] 141 first lifting arm

[0119] 142 second lifting arm

[0120] 311 first carriage arm

[0121] 312 second carriage arm

[0122] 401 first push arm

[0123] 402 second push arm

[0124] 521 first adjustment arm

[0125] 522 second adjustment arm

[0126] 701 first front slide

[0127] 702 second front slide

[0128] P center plane

[0129] L length direction

[0130] H height direction

[0131] a1 first angle

[0132] a2 second angle

Claims

1. A roof window (100) comprising: a stationary main frame (1), a secondary frame, and a lifting device (10) comprising a lifting arm (14) interposed between the main frame (1) and the secondary frame, the lifting arm (14) having a lifting arm first end (14a) and a lifting arm second end (14b), the lifting arm second end (14b) being rotatably connected to the secondary frame, the lifting device (10) further comprising a spring assembly (20) configured to be coupled to a carriage (30), the lifting device (10) further comprising a push arm (40) having a push arm first end (40a) and a push arm second end (40b), the push arm second end (40b) being rotatably connected to the lifting arm (14), and the lifting device (10) further comprising a carriage arm (31) having a carriage arm first end (31a) and a carriage arm second end (31b), the carriage arm second end (31b) being rotatably connected to the carriage (30), characterized in that the lifting device (10) further comprises an adjustment system (50), the lifting arm first end (14a) is rotatably connected to the carriage (30), the carriage (30) being slidably connected to the main frame (1) in a carriage guide (16), the carriage arm first end (31a) is rotatably connected to the lifting arm (14) via the adjustment system (50), and the carriage arm (31) and the lifting arm (14) are connected to form a first angle (al) between each other, wherein the angle (al) is configured to be changed to a second angle (a2) by adjusting the position of the carriage arm first end (31a) by means of the adjustment system (50).

2. The roof window (100) according to claim 1, characterized in that the adjustment system (50) comprises an adjustment screw (53) and an adjustment bushing (54), wherein the carriage arm first end (31a) is connected to the lifting arm (14) via the adjustment screw (53) and the adjustment bushing (54).

3. The roof window (100) according to claim 1, characterized in that the lifting device (10) further comprises an adjustment arm (52) having an adjustment arm first end (52a) rotatably connected to the adjustment system (50) and an adjustment arm second end (52b) rotatably connected to the lifting arm (14).

4. The roof window (100) according to claim 2, characterized in that the adjustment screw (53) is arranged in an opening of the lifting arm (14), and wherein the carriage arm (31) is connected to the adjustment screw (53) located in the opening of the lifting arm (14).

5. The roof window (100) according to claim 3, characterized in that the lifting arm (14) comprises a first lifting arm (141) and a second lifting arm (142) arranged symmetrically with respect to a center plane (P).

6. The roof window (100) according to claim 1, characterized in that the carriage arm (31) comprises a first carriage arm (311) and a second carriage arm (312) arranged symmetrically with respect to a center plane (P).

7. The roof window (100) according to claim 1, characterized in that The push arm (40) comprises a first push arm (401) and a second push arm (402) arranged symmetrically with respect to a central plane (P).

8. The roof window (100) according to claim 5, characterized in that The adjustment arm (52) is arranged between the first lifting arm (141) and the second lifting arm (142).

9. The roof window (100) according to claim 1, characterized in that The push arm second end (40b) is connected to the lifting arm (14) at a position between the lifting arm first end (14a) and the lifting arm second end (14b).

10. The roof window (100) according to claim 1, characterized in that The carriage (30) comprises at least two slides (70, 71), each slide being slidably connected to a track (43a, 43b) in the carriage guide (16).

11. The roof window (100) according to claim 1, characterized in that The sub-frame comprises a sash (2).

Images