Roof window

Abstract

A roof window (100) comprising a stationary main frame (1), a sub-frame and a lifting device (10) comprising a lifting arm (14) interposed between the main frame (1) and the sub-frame, the lifting arm (14) having a lifting arm first end (14a) rotatably connected to a carriage (30) and a lifting arm second end (14b) rotatably connected to the carriage (30). The utility model relates to a lifting device (10) comprising a main frame (1), a carriage (30) slidably connected to the main frame (1) in a carriage guide (16), a lifting arm second end rotatably connected to at least one sub-frame, a spring assembly (20) configured to be coupled to the carriage (30), a push arm (40) configured to be coupled to the carriage (30), the push arm has a push arm first end rotatably connected to the carriage guide (16) and a push arm second end rotatably connected to the lift arm (14).

Description

Technical Field

[0001] This utility model relates to a roof window having a fixed main frame, a sub-frame, and a lifting device. The lifting device includes a lifting arm inserted between the main frame and the sub-frame, the lifting arm having a first end and a second end, the second end of which is rotatably connected to the sub-frame. The lifting device also includes a spring assembly configured to be connected to a carriage. The lifting device also includes a push arm having a first end and a second end, the second end of which is rotatably connected to the lifting arm. Background Technology

[0002] Windows for installation on sloping roof surfaces can be provided in several variations and include more or less complex operating mechanisms to allow opening of the subframe or sash and to achieve other functions such as ventilation. Such roof windows include types that are hinged at or near the center, top-hinged types, and roof windows that are top-hinged during normal operation, but in the latter case, the sash is capable of rotational movement substantially along the central axis for cleaning or to provide an alternative operating mode. Top-hinged roof windows have a first hinge axis provided by a top-hinging device to provide a first operating state, while in a second operating state, rotation of the sash is performed by means of an intermediate frame, in which the sash is hinged to provide a second hinge axis. Typically, one hinge element of the hinge device will be located on either side of the roof window to define a generally horizontal hinge axis.

[0003] For example, examples of top-hinged windows with a second operating state are disclosed in applicants' WO-A-89 / 10460, EP 0 733146B1, EP 1 873 323B1, EP 2 762665A2, and WO 2019101281 A1. To allow the window sash to rotate approximately 180° to a convenient cleaning position, the sash structure is connected to an intermediate frame with frame arms. In the closed position of the window, the frame arms are positioned between the upper portion of the frame and the side members of the sash, and during normal use of the window as a top-hung window, the frame arms follow the side members of the sash.

[0004] In addition, the force required to open and operate a roof window is affected by the slope of the roof on which the window is installed.

[0005] In roof windows that are operated fully or partially around a hinge axis at the top, it is known to use a lifting mechanism to balance at least part of the weight of the movable components. This arrangement is intended to facilitate opening the window, and its dimensions can be selected such that a spring can hold the top hinged frame in a balanced position at the desired opening.

[0006] For example, such a lifting device is disclosed in the applicant's WO 2019 / 101281 A1, wherein a spring assembly acts as a force balancing element for the window frame by operating on a lifting arm attached to the frame.

[0007] EP 4 215 706A1 discloses another example of a support system for windows.

[0008] However, although the lifting device in the above example can provide the desired force balance to some extent, there is still room for improvement. Utility Model Content

[0009] In this context, the purpose of this invention is to provide a roof window with a lifting device that offers increased design flexibility, thereby allowing for desired movement patterns and ease of operation.

[0010] This is achieved by the type of roof window mentioned in the introduction, which is further characterized in that the first end of the lifting arm is rotatably connected to the carriage, the carriage is slidably connected to the main frame in the carriage guide, and the first end of the push arm is rotatably connected to the carriage guide.

[0011] This arrangement of arms, in the form of a lifting arm and a pusher arm, provides an alternative connection between the lifting arm and the carriage. The second end of the lifting arm is rotatably connected to the subframe, and the pusher arm is rotatably connected to the carriage guide at one end and to the lifting arm at the other end. The combined effect of these two provides a point of rotation about the pusher arm, allowing the first end of the lifting arm greater freedom of movement while still maintaining the necessary stability to securely lift the subframe without requiring large forces to operate the roof window.

[0012] Other currently preferred embodiments and other advantages will become apparent from the following detailed description and accompanying drawings. Attached Figure Description

[0013] In the following description, embodiments of the present invention will be described with reference to the accompanying drawings, in which:

[0014] Figure 1A This is a perspective view of the roof window as seen from the inside in an embodiment of this utility model.

[0015] Figure 1B This is a perspective view of the roof window as seen from the outside in an embodiment of this utility model.

[0016] Figure 1CThis is a side view of a roof window in an embodiment of the present invention, wherein the window sash is in the open position.

[0017] Figure 2A This is a side view of the lifting device for a roof window in an embodiment of the present invention in the open position.

[0018] Figure 2B This is a side view of the lifting device for a roof window in the closed position according to an embodiment of the present invention.

[0019] Figure 3A This is an exploded perspective view of the connection between the adjusting screw, adjusting bushing and adjusting arm in an embodiment of the present invention.

[0020] Figure 3B This is an exploded perspective view of the connection between the adjusting screw arranged in the opening of the lifting arm in an embodiment of the present invention and the lifting arm.

[0021] Figure 3C This is an exploded perspective view of the connection between the carriage arm, the adjustment system and the lifting arm in an embodiment of the present invention.

[0022] Figure 4A This is a side view of the lifting arm, which is connected to the carriage arm via an adjustment system, in its default position.

[0023] Figure 4B yes Figure 4A A side view of the lifting arm, wherein the carriage arm rotates relative to the lifting arm.

[0024] Figure 4C yes Figure 4A and Figure 4B A side view of the lifting arm, in which the adjustment system is adjusted, thereby changing the connection point between the adjustment system and the carriage arm.

[0025] Figure 5 It is a three-dimensional exploded view of the connection between the lifting arm and the carriage arm.

[0026] Figure 6 It is a perspective view of the components including the lifting arm, carriage arm, adjusting arm, and adjusting system according to the embodiments of the present invention.

[0027] Figure 7 This is a perspective view showing the connection between the lifting device previously installed in the carriage and the carriage guide according to an embodiment of the present invention.

[0028] Figure 8 This is a perspective view of a lifting device for a roof window according to an embodiment of the present invention, showing the central plane P.

[0029] Figure 9 This is a front view of a lifting device for a roof window according to an embodiment of the present invention, showing the central plane P and the symmetrical arrangement of the lifting arm, carriage arm and adjusting arm according to an embodiment of the present invention.

[0030] Figure 10A This is a close-up side view of the adjusting screw arranged in the opening of the lifting arm according to an embodiment of the present invention.

[0031] Figure 10B It shows Figure 10A In one implementation, a tool is inserted to provide external force to the regulating system.

[0032] Figure 10C It shows Figure 10A and Figure 10B In one implementation, the tool acts on the adjusting screw wheel.

[0033] Figure 10D It shows Figures 10A to 10C In one implementation, an external force is provided by rotating an external tool, thereby adjusting the adjusting screw.

[0034] Figure 10E It shows Figures 10A to 10D In one implementation, the position of the carriage arm on the adjusting screw is changed by adjusting the adjusting screw, thereby changing the angle between the carriage arm and the lifting arm.

[0035] Figures 11A to 11B The diagram shows the changing angle between the carriage arm and the lifting arm as the adjusting screw is adjusted.

[0036] Figure 12 This is a close-up bottom perspective view of the adjustment system according to an embodiment of the present invention. Detailed Implementation

[0037] The implementation of the lifting device and roof window will be described in more detail below. When referring to these drawings, the terms up, down, upward, downward, top, and bottom are used relative to how the drawings are displayed. The front view is taken from the hinge and toward the window frame. Therefore, the rear view is taken from the frame toward the hinge. Unless otherwise noted, the longitudinal direction refers to the longitudinal direction along the length of the member. It should be understood that when the window is installed on a sloping roof, the arrangement shown in a horizontal orientation is not the normal orientation. The inner portion faces the interior of the building where the window is installed, while the outer portion faces the exterior of the building in the opposite direction.

[0038] Throughout the various embodiments described herein and the accompanying drawings, reference numerals refer to similar elements.

[0039] First refer to Figure 1A and Figure 1B The image shows a roof window 100. The roof window 100 is intended to be installed in or on a sloping roof surface (not shown).

[0040] The roof window 100 includes a main frame 1, a sub-frame and a pane 4, which will be referred to below as the sash 2, but may also include an intermediate frame that is partially connected to the main frame 1 and partially connected to a separate glass support unit that serves as the sash.

[0041] Typically, roof windows include window panes that comprise at least two panes of glass, preferably at least three panes. The window may include insulated glass units (IGUs).

[0042] The main frame 1 comprises a set of frame members, including a top frame member, two side frame members, and a bottom frame member. Correspondingly, the window sash 2 comprises a set of window sash members, including a top window sash member, two side window sash members, and a bottom window sash member. Although the main frame 1 and window sash 2 are described as rectangular structures, some principles of the proposed concept can also be applied to other geometries.

[0043] The pane 4 includes multiple edge portions typically associated with the components of the window sash 2. The outer pane surface 4e defines the plane of the roof window 100 in its assembled state. The assembled state of the roof window 100 is achieved when the main components of the main frame 1 and the window sash 2 have been assembled and the main frame 1 and window sash 2 are connected to each other, for example, in the installation position when the roof window 100 is ready for use. Correspondingly, the assembled state of the window sash 2 is achieved once the main components of the window 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" should be understood to include the main components of the roof window necessary to perform all operational functions, excluding accessories or auxiliary equipment.

[0044] The interior window pane surface 4i faces inward, typically towards the room of the building beneath the roof surface where the roof window 100 is installed.

[0045] In the illustrated embodiment, the window sash 2 is openable relative to the main frame 1 to obtain one or more open positions. In such open positions, the window sash 2 and the window pane 4 are moved out of the plane of the roof window 1. As will be described below, the window sash 2 is shown as top-hung, i.e., during normal use, the window sash 2 rotates about a generally horizontal hinge axis at or near the top frame member and the top window sash member at the top of the roof window 100. However, it is conceivable that some of the principles of the concept proposed for roof windows can be applied to different types of windows with other opening patterns.

[0046] Figure 1A Other details shown include operating component 5, which is shown here as a handle. Other operating components may also be present.

[0047] Figure 1B The diagram also shows a representative mounting bracket that forms part of a plurality of mounting supports, which create a load-transfer connection between the roof window 100 and the surrounding roof structure (not shown). This roof structure may include rafters and slats, plywood, or other construction materials.

[0048] Insulating frame 7 is shown. Insulation via the insulating frame is optional and can be provided only along some of the frame members, or it can be provided around all four frame members as shown.

[0049] Reference Figure 1C The roof window 100 is shown in a top-hung configuration. The roof window is top-hung, that is, it is hinged at the top by means of a hinge assembly (not shown) that connects the main frame and the sub-frame.

[0050] The hinge assembly is configured to allow the window sash 2 to be suspended in a first operating state corresponding to normal use. That is, during normal use, the window sash 2 rotates between a closed position and an open position about a generally horizontal first hinge axis at or near the top frame member and the top window sash member.

[0051] To assist the user in opening window sash 2, a lifting device 10 is provided, as will be described below. Now refer to... Figure 2A The lifting device 10 includes a lifting arm 14 inserted between the main frame 1 and at least one sub-frame, here the window sash 2. The lifting device 10 also includes a spring assembly 20 and a push arm 40, the spring assembly 20 being configured to be connected to the carriage 30.

[0052] exist Figure 2AThe image shows an embodiment of the lifting device 10 from a side view, where one side of the carriage guide 16 is removed, thus showing the carriage 30 connected to the spring assembly 20. A lifting arm 14 is inserted between the main frame 1 and the window sash 2, such that the lifting arm 14 has a first end 14a connected to the carriage 30 and a second end 14b connected to the window sash 2.

[0053] The lifting arm 14 is connected to the carriage guide 16 via a push arm 40. The push arm 40 has a first end 40a rotatably connected to the carriage guide 16 and a second end 40b rotatably connected to the lifting arm 14. In the illustrated embodiment, the push arm 40 is connected to the carriage guide 16 by a first rivet 42i and to the lifting arm 14 by a second rivet 42ii. Figure 5 More detailed illustrations are provided.

[0054] The carriage 30 is attached to the spring assembly 20, which is arranged to apply force to the carriage 30 when the roof window 100 is in use. The carriage 30 can be disconnected from the spring assembly 20, such as... Figure 2B As shown in the diagram. This can be an advantage during the installation of a roof window, where the spring force acting on the carriage 30 can make operating the roof window difficult. When the lifting device is installed in the roof window according to its intended use, the carriage 30 and spring assembly 20 are initially in an unconnected state. The spring assembly 20 and carriage 30 are then connected by opening the roof window, causing the carriage 30 to slide toward a connecting device, such as a hook 21 attached to a spring included in the spring assembly 20. This connection can be achieved, for example, by the carriage 30, which includes a connecting plate 32 for connecting 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 toward the top hinge of the roof window 100 in a direction away from the spring assembly 20, and the spring now connected to the carriage 30 will exert tension on the carriage 30 and provide resistance against the closing of the roof window.

[0055] The tension 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 the open position without being forced to close by its own weight, nor forced to open further by the tension exerted by the spring of the spring assembly 20. This balance is affected by the slope 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 slope. If the roof window is installed on a roof with a slope different from the expected slope, 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 may exert too much force on the window, thereby forcing the window to open further. In another example, the spring may be too weak, and the window will close due to its own weight. In both cases, the window may be difficult to operate and potentially dangerous for the user.

[0056] To easily adjust the roof window 100 according to the roof slope, an adjustment system 50 can be used. The adjustment system 50 can be used to adjust the roof window for a roof slope range of 15° to 60°.

[0057] Figures 3A to 4C The embodiment of the adjustment system 50 is shown in more detail below. The adjustment system 50 is connected to the adjustment arm 52, which in turn is connected to other components of the lifting device 10, as will be described in further detail below.

[0058] Figure 3A An adjusting screw 53 is shown, which has an adjusting screw shaft 53i, an adjusting screw wheel 53ii, and an adjusting screw top 53iii. In the illustrated embodiment, the adjusting arm 52 is a two-part component comprising a first adjusting arm 521 and a second adjusting arm 522, and is connected to the adjusting bushing 54.

[0059] Figure 3B It shows Figure 3A The components are connected to the lifting arm 14, which is configured here to include a first lifting arm 141 and a second lifting arm 142. The first lifting arm 141 and the second lifting arm 142 are connected to each other by one or more lifting arm rivets 57. Figure 3BIn the illustration, an adjustment system 50, including an adjusting screw 53, is shown housed between a first lifting arm 141 and a second lifting arm 142, and within an opening 15 in the lifting arm. The adjusting arm 52 has a first end 52a connected to the adjustment system 50 via an adjusting bushing 54. A second end 52b is rotatably connected to the lifting arm 14, allowing the adjusting arm 52 to travel along a path in the opening 15 of the lifting arm. In the illustrated embodiment, the opening 15 of the lifting arm is arched, but in principle it can have any shape that allows for proper movement. An adjusting screw wheel 53ii is housed in a separate opening 17 in the lifting arm 14. Preferably, the adjusting screw is connected to the lifting arm 14 via its top.

[0060] Figure 3C The carriage arm 31 is shown, having a first end 31a of the carriage arm rotatably connected to the lifting arm 14 and a second end 31a rotatably connected to the lifting arm 14. Figure 3C The second end 31b of the carriage arm of the carriage 30 (not shown). The carriage arm 31 is connected to the adjusting bushing 54. In the illustrated embodiment, the carriage arm 31 is a two-part component, as will be described below.

[0061] Therefore, the adjusting arm 52 is arranged in the lifting arm 14 between the first lifting arm 141 and the second lifting arm 142, and the carriage arm 31 is arranged on the outside of the lifting arm 14.

[0062] Figures 4A to 4C It shows Figures 3A to 3C The components of the lifting arm 14 and carriage arm 31. Figure 4B This illustrates how the second end 31b of the carriage arm is arranged to rotate about the adjusting bushing 54, and Figure 4C This illustrates how the first end 31a of the carriage arm is arranged to move along the axis 53i of the adjusting screw when the adjusting screw 53 is adjusted.

[0063] Figure 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. Figure 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... Figure 8 as well as Figures 10D to 10E As shown in the image.

[0064] exist Figure 6The 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.

[0065] Now refer to Figure 7 This illustrates an embodiment in which the carriage 30 and push arm 40 are arranged in the carriage guide 16. Figure 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.

[0066] Figure 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.

[0067] 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.

[0068] The push arm 40 includes a first push arm 401 and a second push arm 402 arranged symmetrically with respect to the central plane P. The carriage arm 31 includes a first carriage arm 311 and a second carriage arm 312 arranged symmetrically with respect to the central plane. Finally, the adjusting arm 52 includes a first adjusting arm 521 and a second adjusting arm 522 arranged symmetrically with respect to the central plane P and extending along the central plane P, while the adjusting screw 53 extends in the central plane P.

[0069] The symmetrical arrangement of the lifting device components provides a lifting device in which the forces from the roof window panes and other movable parts are aligned relative to the central plane P. This ensures minimal torque on each part of the lifting device and overall stability of the lifting device and the roof window.

[0070] Now turn to Figures 10A to 10E The illustration shows an embodiment including the adjustment system 50 according to the present disclosure. The adjustment system 50 is shown as including an adjustment screw 53 disposed within the contour of the lifting arm 14 so that it can be accessed via an opening in the lifting arm 14, as will be described below.

[0071] Figure 10B This illustrates how an adjustment system can be adjusted by applying an external force. In this embodiment, the external force is applied to the adjusting screw wheel 53ii via a screwdriver head 60. Figures 10A to 10C In the illustrated embodiment, the lifting arm 14 is arranged to receive a screwdriver head 60 through an opening in the lifting arm 14. In the illustrated embodiment, the opening is formed as a space between the first lifting arm 141 and the second lifting arm 142, allowing the screwdriver head 60 to be inserted from the rear of the lifting arm 14. Therefore, the adjustment system 50 is most easily adjusted when the roof window 100 is in the open position. The opening for such a screwdriver head can alternatively and / or additionally be arranged on another side, such as the front, or, for example, on one or both sides of the lifting arm via the opening 15 of the lifting arm 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.

[0072] exist Figure 10D and Figure 10E The diagram illustrates how the adjustment system 50 can be adjusted to change the position of the first end 31a of the carriage arm relative to the lifting arm 14 by moving the first end 31a of the carriage arm along the adjusting screw 53. This alters the force balance between the tension from the spring assembly 20 and the weight of the window, allowing the roof window 100 to be adjusted for different roof slopes. Therefore, the first end 31a of the carriage arm is shown in two different positions relative to the lifting arm 14, corresponding to adjustments made for two different roof slopes.

[0073] Figure 11A and Figure 11B It shows Figure 10D and Figure 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.

[0074] Figure 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. Figure 11A , Figure 11B and Figure 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.

[0075] List of reference numerals in the attached figures

[0076] 1. Main Frame

[0077] 2 window sashes

[0078] 4 panes

[0079] 4i interior window surface

[0080] 4e External window surface

[0081] 5 operating components

[0082] 7 Insulation Frame

[0083] 10 lifting devices

[0084] 14 lifting arms

[0085] 14a Lifting Arm First End

[0086] 14b Lifting Arm Second End

[0087] 15. Opening of the lifting arm

[0088] 16 Carriage Guide

[0089] 17. Separate openings

[0090] 20 Spring Assembly

[0091] 21 Hook-shaped components

[0092] 30 carriage

[0093] 31 Carriage Arm

[0094] 31a carriage arm first end

[0095] 31b carriage arm second end 32 Connecting plate

[0096] 40 push arm

[0097] 40a push arm first end

[0098] 40b push arm second end

[0099] 41 Rivets

[0100] 42i First Rivet

[0101] 42ii Second rivet

[0102] 43a Front Track

[0103] 43b rear track

[0104] 50 Regulation System

[0105] 52 Adjusting Arm

[0106] 52a Adjusting Arm First End

[0107] 52b Adjusting arm second end 53 Adjusting screw

[0108] 53i Adjusting Screw Shaft

[0109] 53ii Adjusting Screw Wheel

[0110] 53iii Adjusting screw top

[0111] 54 Adjusting bushing

[0112] 57 Lifting arm rivets

[0113] 60 screwdriver bits

[0114] 70 Front Slide

[0115] 71 Rear Slide

[0116] 100 roof windows

[0117] 141 First lifting arm

[0118] 142 Second lifting arm

[0119] 311 First carriage arm

[0120] 312 Second Carriage Arm

[0121] 401 First Push Arm

[0122] 402 Second Push Arm

[0123] 521 First Adjusting Arm

[0124] 522 Second Adjusting Arm

[0125] 701 First Front Slide

[0126] 702 Second Front Slide

[0127] P center plane

[0128] L (length direction)

[0129] H (height direction)

[0130] α1 First Angle

[0131] α2, the 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 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), characterized in that 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), and the push arm first end (40a) is rotatably connected to the carriage guide (16).

2. The roof window (100) according to claim 1, characterized in that the lifting device further comprising a carriage arm (31) having a carriage arm first end (31a) rotatably connected to the lifting arm and a carriage arm second end (31b) rotatably connected to the carriage (30).

3. The roof window (100) according to claim 2, characterized in that the lifting device (10) further comprising an adjustment system (50) comprising an adjustment screw (53) arranged in an opening of the lifting arm (14).

4. The roof window (100) according to claim 3, characterized in that the lifting device (10) further comprising 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).

5. The roof window (100) according to claim 4, characterized in that the carriage arm (31) is connected to the lifting arm (14) via the adjustment screw (53) and the adjustment arm (52) is connected to the lifting arm (14) via the adjustment screw (53).

6. The roof window (100) according to claim 5, characterized in that the adjustment system comprises an adjustment bushing (54) engaged with the adjustment screw (53), wherein the adjustment arm (52) and the carriage arm (31) are connected to the adjustment screw (53) via the adjustment bushing (54).

7. 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).

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

9. The roof window (100) according to claim 8, characterized in that The at least two runners include a front runner (70) configured to slide in a front track (43a) positioned proximate a first end of the carriage guide (16) and a rear runner (71) configured to slide in a rear track (43b) positioned proximate a second end of the carriage guide (16).

10. The roof window (100) according to claim 9, characterized in that The front runner (70) includes a first front runner (701) and a second front runner (702) positioned on opposite sides of the lift arm.

11. The roof window (100) according to claim 1, characterized in that The lift arm (14) is attached to the sub-frame by a rivet (41).

12. The roof window (100) according to claim 1, characterized in that The push arm (40) is connected to the carriage guide (16) via a first rivet (42i) and to the lift arm (14) via a second rivet (42ii).

13. The roof window (100) according to claim 1, characterized in that The carriage (30) includes a coupling plate (32) for coupling the carriage (30) to the spring assembly (20).

14. The roof window (100) according to claim 1, characterized in that The push arm (40) includes a curved portion.

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

Images