EP4567237A1 - Dachfenster mit hebevorrichtung - Google Patents

Dachfenster mit hebevorrichtung Download PDF

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Publication number
EP4567237A1
EP4567237A1 EP24218102.2A EP24218102A EP4567237A1 EP 4567237 A1 EP4567237 A1 EP 4567237A1 EP 24218102 A EP24218102 A EP 24218102A EP 4567237 A1 EP4567237 A1 EP 4567237A1
Authority
EP
European Patent Office
Prior art keywords
arm
sledge
adjustment
lifting arm
lifting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP24218102.2A
Other languages
English (en)
French (fr)
Inventor
Michael Galsgård Holm
Terkel ØHLENSCHLÆGER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
VKR Holding AS
Original Assignee
VKR Holding AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by VKR Holding AS filed Critical VKR Holding AS
Publication of EP4567237A1 publication Critical patent/EP4567237A1/de
Pending legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
    • E04D13/03—Sky-lights; Domes; Ventilating sky-lights
    • E04D13/035—Sky-lights; Domes; Ventilating sky-lights characterised by having movable parts
    • E04D13/0351—Sky-lights; Domes; Ventilating sky-lights characterised by having movable parts the parts pivoting about a fixed axis
    • E04D13/0354—Sky-lights; Domes; Ventilating sky-lights characterised by having movable parts the parts pivoting about a fixed axis the parts being flat
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
    • E04D13/03—Sky-lights; Domes; Ventilating sky-lights
    • E04D13/035—Sky-lights; Domes; Ventilating sky-lights characterised by having movable parts
    • E04D13/0357—Sky-lights; Domes; Ventilating sky-lights characterised by having movable parts the parts pivoting about an axis supported on a hinged frame or arms
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D15/00—Suspension arrangements for wings
    • E05D15/40—Suspension arrangements for wings supported on arms movable in vertical planes
    • E05D15/46—Suspension arrangements for wings supported on arms movable in vertical planes with two pairs of pivoted arms
    • E05D15/466—Suspension arrangements for wings supported on arms movable in vertical planes with two pairs of pivoted arms specially adapted for windows
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
    • E05F1/08—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings
    • E05F1/10—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance
    • E05F1/1041—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance with a coil spring perpendicular to the pivot axis
    • E05F1/1066—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance with a coil spring perpendicular to the pivot axis with a traction spring
    • E05F1/1075—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance with a coil spring perpendicular to the pivot axis with a traction spring for counterbalancing
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
    • E05F1/08—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings
    • E05F1/10—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance
    • E05F1/12—Mechanisms in the shape of hinges or pivots, operated by springs
    • E05F1/1246—Mechanisms in the shape of hinges or pivots, operated by springs with a coil spring perpendicular to the pivot axis
    • E05F1/1253—Mechanisms in the shape of hinges or pivots, operated by springs with a coil spring perpendicular to the pivot axis with a compression spring
    • E05F1/1261—Mechanisms in the shape of hinges or pivots, operated by springs with a coil spring perpendicular to the pivot axis with a compression spring for counterbalancing
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/40—Motors; Magnets; Springs; Weights; Accessories therefor
    • E05Y2201/404—Function thereof
    • E05Y2201/416—Function thereof for counterbalancing
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/40—Motors; Magnets; Springs; Weights; Accessories therefor
    • E05Y2201/47—Springs
    • E05Y2201/488—Traction springs
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/40—Motors; Magnets; Springs; Weights; Accessories therefor
    • E05Y2201/499—Spring tensioners; Tension sensors
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/60—Suspension or transmission members; Accessories therefor
    • E05Y2201/622—Suspension or transmission members elements
    • E05Y2201/624—Arms
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/60—Suspension or transmission members; Accessories therefor
    • E05Y2201/622—Suspension or transmission members elements
    • E05Y2201/696—Screw mechanisms
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/60—Suspension or transmission members; Accessories therefor
    • E05Y2201/622—Suspension or transmission members elements
    • E05Y2201/696—Screw mechanisms
    • E05Y2201/70—Nuts
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/60—Suspension or transmission members; Accessories therefor
    • E05Y2201/622—Suspension or transmission members elements
    • E05Y2201/708—Sliders
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2600/00—Mounting or coupling arrangements for elements provided for in this subclass
    • E05Y2600/10—Adjustable
    • E05Y2600/20—Adjustable with specific transmission movement
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/15—Applicability
    • E05Y2800/17—Universally applicable
    • E05Y2800/176—Universally applicable on different wing types, weights or sizes
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/13—Type of wing
    • E05Y2900/148—Windows
    • E05Y2900/152—Roof windows

Definitions

  • the present invention relates to a roof window with a stationary primary frame, at least one secondary frame, such as a sash and/or an intermediate frame, and a lifting device comprising a lifting arm inserted between the primary frame and the at least one secondary frame, the lifting arm having a first end and a second end, the second end being rotatably connected to the at least one secondary frame, the lifting device furthermore comprising a spring assembly configured to be coupled to a sledge, the lifting device further comprising a push arm having a first end and a second end, the second end being rotatably connected to the lifting arm.
  • Windows for installation in an inclined roof surface may be provided in a number of varieties and include more or less complicated operational structures to allow opening of the sash and to fulfil 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 windows that are top-hinged during normal operation but in which the sash is able to perform a rotating movement substantially at a centre axis, either for cleaning or for providing an alternative manner of operation.
  • Roof windows of the top-hinged type have a first hinge axis provided by a top hinge arrangement to provide a first operational condition, whereas rotation of the sash in a second operational condition is performed by means of an intermediate frame in which the sash is hinged to provide a secondary hinge axis.
  • one hinge of the hinge arrangement will be located at either side of the roof window to define a substantially horizontal hinge axis.
  • top-hinged windows with a second operational condition are for instance disclosed in Applicant's WO-A-89/10460 , EP 0 733146 B1 , EP 1 873 323 B1 , EP 2 762 665 A2 , and WO 2019101281 A1 .
  • the sash structure is connected with an intermediate frame with frame arms, which in the closed position of the window are positioned between the upper parts of the frame and sash side members, and which during normal use of the window as a top-hung window follow the sash side members.
  • the opening of a roof window and the force required to operate the window is affected by the inclination of the roof in which the window is installed.
  • Such a lifting device is for instance disclosed in the Applicant's WO2019/101281 A1 where a spring assembly acts as a force balancing element to the pane-carrying frame by operating on a lifting arm attached to the frame.
  • EP 4 215 706 A1 discloses another example of a support system for windows.
  • a roof window of the kind mentioned in the introduction which is further characterised in that the first end of the lifting arm is rotatably connected with the sledge slidably connected to the primary frame in a sledge guide, and the first end of the push arm is rotatably connected to the sledge guide.
  • This arrangement of arms in the form of the lifting arm and the push arm provides an alternative connection of the lifting arm to the sledge.
  • the combined effect of the second end of the lifting arm being rotatably connected to the secondary frame and the use of a push arm being at one end rotatably connected to the sledge guide and at the other end rotatably connected to the lifting arm provides a point of rotation around the push arm allowing the first end of the lifting arm to have a larger degree of freedom while still having the necessary stability to securely lift the secondary frame and without requiring large force to operate the roof window.
  • the lifting device may further comprise a sledge arm with a first end rotatably connected to the lifting arm and a second end rotatably connected to the sledge.
  • This configuration offers a simple and reliable mechanical connection which has the further advantage of providing a link between the lifting arm and the sledge.
  • the lifting arm is rotatably connected to the first end of the sledge arm, and the sledge is rotatably connected the second end of the sledge arm.
  • the sledge arm has the advantage of increasing the mobility of the lifting arm relative to the sledge because it acts as a link connection between the sledge and the lifting arm.
  • the sledge arm is preferably connected to the lifting arm at a point proximate the first end of the lifting arm.
  • the lifting device may further comprise an adjustment system where the adjustment system comprises an adjustment screw arranged in an opening of the lifting arm.
  • the adjustment system provides a mechanism for adjusting the balance between the weight of the pane-carrying sash with the force provided by the spring assembly.
  • the weight of the pane-carrying sash is at least partially carried by the lifting arm when the roof window is in an open position and the lifting arm is arranged such that the weight of the pane-carrying sash acts as a pulling force on the spring in the spring assembly.
  • the stretched spring provides a spring force towards the equilibrium position of the spring which forces the pane-carrying sash towards an open position.
  • the weight carried by the lifting arm depends on the roof inclination of the roof in which the roof window is installed.
  • the balance between the spring force and the force from the weight of pane-carrying sash acting on the lifting arm may therefore change when the roof inclination is changed.
  • the adjustment system is arranged to adjust the balance between the force exerted by the lifting arm on the pane-carrying sash and the weight of the pane-carrying sash.
  • the adjustment system is arranged such that the opening angle of the roof window is not substantially affected during adjustment of the adjustment system. That means that the adjustment to a different roof inclination is possible without affecting the opening angle of the roof window.
  • the adjustment system may be adjusted to balance roof window for roof inclinations in the range of 15 - 60°.
  • the adjustment screw may act as a connecting link between one or more elements of the roof window, where one element is the lifting arm, allowing the connected elements to be moved relative to each other when the adjustment screw is adjusted.
  • the adjustment screw comprises an adjustment screw shaft, an adjustment screw wheel, and an adjustment screw top.
  • the adjustment screw is constrained by the opening of the adjustment arm.
  • the adjustment screw is connected to the lifting arm via the adjustment screw top and the adjustment screw is thereby stationary relative to the lifting arm when the adjustment screw is adjusted.
  • One or more elements of the roof window may be connected to the adjustment screw shaft.
  • the position of the one or more elements on the adjustment screw shaft is arranged to be adjusted when the adjustment screw is manipulated.
  • the adjustment screw wheel is arranged to be manipulated by an external force such as the force from a screw bit in order to rotate the adjustment screw.
  • the one or more elements connected to the adjustment screw shaft is arranged to be moved relative to the lifting arm. This arrangement changes the balance between the weight of the pane-carrying frame and the force exerted by the lifting arm on the pane-carrying frame from the pull of the spring assembly.
  • the lifting device further comprises an adjustment arm, with a first end rotatably connected to the adjustment system and a second end rotatably connected to the lifting arm.
  • the adjustment arm may be connected to the adjustment screw comprised in the adjustment system; for instance, the adjustment arm may be connected to the adjustment screw shaft.
  • the adjustment screw is preferably connected to the lifting arm through an adjustment screw top, and one or more elements are connected to the adjustment screw shaft.
  • the adjustment screw is arranged in an opening of the lifting arm, and the forces acting on the adjustment screw may drive the adjustment screw towards a surface of the lifting arm resulting in the adjustment system and the lifting arm colliding causing unwanted friction and tear on the system and on the sledge. Alternatively, and/or additionally, the forces acting on the adjustment screw may cause a strain on the adjustment screw causing unwanted wear and tear on the system.
  • the adjustment arm reduces the friction in the adjustment system, by acting as a constraint on the adjustment screw.
  • the adjustment screw is constrained to move in the arch provided by rotating the adjustment arm around its connection point with the adjustment arm.
  • the opening of the lifting arm in which the adjustment screw is arranged is shaped according to the adjustment arm such that the second end of the adjustment arm travels along this opening.
  • the sledge arm is connected to the lifting arm via the adjustment screw, and the adjustment arm may be connected to the lifting arm via the adjustment screw.
  • both the adjustment arm and the sledge arm may be adjusted via the adjustment screw and may be adjusted simultaneously. Additionally, this configuration provides a simple connection between the adjustment screw, the adjustment arm, the sledge arm, and the lifting arm.
  • Indications such as numerical values, letters or marks for indicating a roof inclination may be provided on the push arm and/or the lifting arm and/or at another location or locations in proximity of the adjustment system. Such indications may preferably be provided on the push arm.
  • the sledge arm may be arranged in proximity of the push arm and when the sledge arm is connected to the lifting arm via the adjustment screw, the sledge arm will move relative to the push arm when the adjustment screw is adjusted. As such, the sledge arm may serve as a pointer towards indications on the push arm to indicate a roof inclination.
  • the adjustment system comprises an adjustment bushing engaging with the adjustment screw, and wherein the adjustment arm and the sledge arm are connected to the adjustment screw via the adjustment bushing.
  • the adjustment bushing may provide a low friction connection between the adjustment screw and the adjustment arm and sledge arm, respectively.
  • the second end of the push arm is connected to the lifting arm at a position between the first end of the lifting arm and the second end of the lifting arm. This may provide a larger range of motion for the first end of the lifting arm.
  • the sledge may comprise at least two runners, each runner being slidably connected to a track in the sledge guide.
  • the runners may provide a stable connection between the sledge and the sledge guide that allows the sledge to slide in the sledge guide at low friction.
  • the track may comprise a straight portion and/or a curved portion.
  • the at least two runners may comprise a front runner configured to slide in a front track positioned towards a first end of the sledge guide and a back runner configured to slide in a back track positioned towards a second end of the sledge guide.
  • the combination of a front runner and a back runner may provide a balanced support of the sledge in the sledge guide.
  • the front runner may comprise a first front runner and a second front runner positioned on opposite sides of the lifting arm. This may provide an open space between the first and second front runner allowing the first end of the lifting arm to be coupled to the sledge in proximity of the front runner.
  • the lifting arm may be attached to the secondary frame by a rivet. This may provide a stable and simple connection between the lifting arm and the secondary frame, thus resulting in a lower cost of manufacturing.
  • the push arm may be connected to the sledge guide via a first rivet and to the lifting arm via a second rivet. This provides a stable and simple connection between the push arm and the lifting arm, thus resulting in a lower cost of manufacturing.
  • the sledge may comprise a coupling plate for coupling the sledge to the spring assembly.
  • the coupling plate may serve as a way to easily couple the spring assembly to the sledge.
  • the push arm may comprise a curved portion. By having a push arm with a curved portion, a larger area on the lifting arm is free to be coupled to the sledge.
  • the roof window comprises a windowpane comprising at least two layers of glass, preferably at least three layers of glass.
  • the window may comprise an Insulating Glazing Unit (IGU).
  • IGU Insulating Glazing Unit
  • a roof window 100 is shown.
  • the roof window 100 is intended to be installed in or on an inclined roof surface (not shown).
  • the roof window 100 comprises a primary frame 1, a secondary frame which in the following will be referred to as a sash 2 but which could also include an intermediate frame connected partly to the primary frame 1, partly to a separate, glass-carrying unit functioning as a sash, and a pane 4.
  • the roof window comprises a windowpane comprising at least two layers of glass, preferably at least three layers of glass.
  • the window may comprise an Insulating Glazing Unit (IGU).
  • IGU Insulating Glazing Unit
  • the primary frame 1 comprises a set of frame members including a top frame member, two side frame members and a bottom frame member.
  • the sash 2 comprises a set of sash members including a top sash member, two side sash members and a bottom sash member. While the primary frame 1 and sash 2 are described as rectangular structures, some principles of the presented concepts may be applicable to other geometrical shapes as well.
  • the pane 4 comprises a number of edge portions generally associated to members of the sash 2.
  • An exterior pane surface 4e defines a plane of the roof window 100 in an assembled condition of the roof window 100.
  • the assembled condition of the roof window 100 is achieved when main components of the primary frame 1 and sash 2 have been assembled and the primary frame 1 and sash 2 are connected to each other, for instance in an installed position when the roof window 100 is ready for use.
  • an assembled condition of the sash 2 is achieved once main components of the sash 2 have been assembled, and an assembled condition of the primary frame 1 when main components of the primary frame 1 are assembled.
  • main components is to be understood as encompassing primary parts of the roof window necessary to perform all operational functions, and not including accessories or auxiliary equipment.
  • An interior pane surface 4i faces the interior, typically a room of a building subjacent the roof surface in which the roof window 100 is installed.
  • the sash 2 is openable relative to the primary frame 1, to obtain one or more open positions. In such open positions, the sash 2 and pane 4 are moved out of the plane of the roof window 1.
  • the sash 2 is shown as being top-hung, i.e., during normal use, the sash 2 is rotated about a substantially horizontal hinge axis at or near the top frame member and top sash member at the top of the roof window 100. It is however conceivable to apply some principles of the presented concepts for roof windows on different types of windows having other opening patterns.
  • FIG. 1A Further details shown in Fig. 1A include an operating assembly 5, here shown as a handle. Other operating assemblies may be present as well.
  • a representative mounting bracket forming part of a plurality of mounting brackets forming a load-transferring connection between the roof window 100 and a surrounding roof structure (not shown).
  • a roof structure may include rafters and battens, plywood or other construction materials.
  • An insulating frame 7 is shown. Insulation by an insulating frame is optional and may be provided along only some of the frame members or as shown surrounding all four frame members.
  • 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 a hinge assembly (not shown) connecting the primary frame with the secondary frame.
  • the hinge assembly is configured in such a way that it allows the sash 2 to be top-hung in a first operational condition corresponding to normal use. That is, during normal use the sash 2 is rotated about a substantially horizontal first hinge axis at or near the top frame member and top sash member between a closed position and an open position.
  • the lifting device 10 comprises a lifting arm 14 inserted between the primary frame 1 and the at least one secondary frame, here the sash 2.
  • the lifting device 10 furthermore comprises a spring assembly 20 configured to be coupled to a sledge 30, and a push arm 40.
  • FIG. 2A an embodiment of the lifting device 10 is shown from a side view with one side of the sledge guide 16 removed thereby showing the sledge 30 in connection with the spring assembly 20.
  • the lifting arm 14 is inserted between the primary frame 1 and the sash 2 such that the lifting arm 14 has a first end 14a in connection with the sledge 30 and a second end 14b connected to the sash 2.
  • the lifting arm 14 is connected to the sledge guide 16 via the push arm 40.
  • the push arm 40 has a first end 40a rotatably connected to the sledge guide 16 and a second end 40b rotatably connected to the lifting arm 14, in the embodiment shown by means of a first rivet 42i and a second rivet 42ii as shown in more detail Fig. 5 .
  • the sledge 30 is attached to the spring assembly 20 which is arranged to exert a force on the sledge 30 in a condition of use of the roof window 100.
  • the sledge 30 may be uncoupled from the spring assembly 20, as shown in Fig. 2B . This may, as an example, be an advantage during installation of the roof window where a spring force acting on the sledge 30 may make it difficult to handle the roof window.
  • the sledge 30 and the spring assembly 20 are initially in an uncoupled state.
  • the spring assembly 20 and the sledge 30 are then coupled by opening the roof window resulting in the sledge 30 sliding towards a coupling device such as a hook 21 attached to a spring comprised in the spring assembly 20.
  • Such a coupling may for example be realized by the sledge 30 comprising a coupling plate 32 for coupling the sledge 30 to the spring assembly 20. Opening the roof window results in the sledge 30 engaging with the hook 21 and once the roof window is subsequently closed, the sledge 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 sledge 30, will exert a pulling force on the sledge 30 and provide a resistance against the closing of the roof window.
  • the pulling force of the spring assembly 20 and the weight of the movable parts of the roof window 100 are preferably balanced such that the sash 2 of the roof window 100 can be positioned in an open position without forcing it to close due to its own weight or forcing it to open further due to the pulling force applied by the spring of the spring assembly 20.
  • This balance is affected by the inclination of the roof that the roof window is installed in.
  • the spring in the spring assembly 20 may be adjusted to balance the roof window to a specific roof inclination. If the roof window is installed on a roof with a roof inclination different than the intended inclination, the spring force acting on the sledge 30 will not be balanced to 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 for the user to operate and potentially hazardous.
  • an adjustment system 50 may be used.
  • the adjustment system 50 may be used to adjust the roof window for roof inclinations in the range of 15 - 60°.
  • FIG. 3A - 4C An embodiment of the adjustment system 50 is shown in greater detail in Figs. 3A - 4C .
  • the adjustment system 50 is connected to an adjustment arm 52 which in turn is connected to the other components of the lifting device 10 as will be described in further detail below.
  • Fig. 3A shows an adjustment screw 53 with an adjustment screw shaft 53i, an adjustment screw wheel 53ii, and an adjustment screw top 53iii.
  • 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 an adjustment bushing 54.
  • Fig. 3B shows the assembly of Fig. 3A in connection with the lifting arm 14 which is here formed to comprise 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.
  • the adjustment system 50 comprising the adjustment screw 53 is shown as being accommodated between the first lifting arm 141 and the second lifting arm 142 and in an opening 15.
  • the adjustment arm 52 has a first end 52a connected to the adjustment system 50 via the adjustment bushing 54.
  • a second end of the adjustment arm 52b is rotatably connected to the lifting arm 14 allowing the adjustment arm 52 to travel along a path in the opening 15 of the lifting arm.
  • the opening 15 of the lifting arm is arch-shaped but could in principle have any shape allowing suitable movement.
  • the adjustment screw wheel 53ii is accommodated in a separate opening 17 in the lifting arm 14.
  • Preferably the adjustment screw is connected to the lifting arm 14 via the adjustment screw top.
  • Fig. 3C shows a sledge arm 31 with a first end 31a rotatably connected to the lifting arm 14 and a second end 31b rotatably connected to the sledge 30, not shown in Fig. 3C .
  • the sledge arm 31 is connected to the adjustment bushing 54.
  • the sledge arm 31 is a two-part component as will be described below.
  • the adjustment arm 52 is arranged in the lifting arm 14 between the first lifting arm 141 and second lifting arm 142, and the sledge arm 31 is arranged on the outside of the lifting arm 14.
  • Figs 4A - 4C show the assembly of the lifting arm 14 and the sledge arm 31 from Figs 3A - 3C .
  • Fig. 4B shows how a second end 31b of the sledge arm 31 is arranged to rotate around the adjustment bushing 54 and
  • Fig. 4C shows how a first end 31a of the sledge arm 31 is arranged to move along the adjustment screw shaft 53i upon adjustment of the adjustment screw 53.
  • Fig. 5 shows a push arm 40 with a first end 40a configured for being attached to the sledge guide (not shown) and a second end 40b being rotatably connected to the lifting arm 14.
  • the push arm comprises 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 sash 2 (not shown) by means of a rivet 41.
  • the connection between the lifting arm 14 and the sash 2 is shown in Figs. 8 and 10D-10E .
  • the assembly of the lifting arm 14, the push arm 40, the adjustment system 50, the adjustment arm 52, and the sledge arm 31 according to one embodiment of the invention, is shown in Fig. 6 .
  • the sledge in Fig. 7 has a first front runner 701 and a second front runner 702 arranged to be slidably connected to a front track 43a located on each side of the sledge guide 16, and a back runner 71 arranged to be slidably connected to a back track 43b located on each side of the sledge guide 16.
  • the first and second front runners 701, 702 comprised in a front runner 70 are in this embodiment shown as two separate runners, but may in other embodiments be coupled to form a single front runner 70.
  • Fig. 8 shows a lifting device 10 according to the invention with the lifting arm 14 inserted between the primary frame 1 and the sash 2.
  • the sledge guide 16 extends along a length axis in a length direction L. When the window is in a closed position the lifting arm 14 also extends in the length direction L.
  • a height axis extends in a height direction H perpendicular to the length direction L. The height axis extends perpendicularly to the pane of the roof window when the lifting device is installed in the roof window.
  • the length axis and the height axis define a central plane P.
  • the lifting arm 14 of the embodiment shown comprises a first lifting arm 141 and a second lifting arm 142 arranged symmetrically with respect to the central plane P.
  • Forming at least the lifting arm 14 as a two-part component so that the forces exerted by the lifting arm 14 onto the central plane P are balanced provides for an advantageous load distribution within the lifting device 10. That is, the forces resulting from the weight of the movable components of the roof window 100 are aligned with respect to the central plane P.
  • the push arm 40 comprises a first push arm 401 and a second push arm 402 arranged symmetrically with respect to the central plane P.
  • the sledge arm 31 comprises a first sledge arm 311 and a second sledge arm 312 arranged symmetrically with respect to the central plane P.
  • the adjustment arm 52 comprises a first adjustment arm 521 and a second adjustment arm 522 arranged symmetrically with respect to the central plane P and extending along the central plane P, while the adjustment screw 53 extends in the central plane P.
  • the symmetrical arrangement of the lifting device components provides a lifting device where forces from the pane and other movable components of the roof window are aligned with respect to the central plane P. This ensures minimal torque on the individual parts of the lifting device and stabilizes the lifting device and the roof window in general.
  • Figs. 10A-10E embodiments comprising an adjustment system 50 according to the disclosure are shown.
  • the adjustment system 50 is shown comprising an adjustment screw 53 provided within the contours of the lifting arm 14 such as to be accessible via an opening in the lifting arm 14 as will be described below.
  • Fig. 10B shows how the adjustment system is adjusted by applying an external force.
  • the external force is applied via a screw bit 60 to the adjustment screw wheel 53ii.
  • the lifting arm 14 is arranged to receive a screw bit 60 through an opening in the lifting arm 14.
  • the opening is provided as a space between the first lifting arm 141 and the second lifting arm 142 such that the screw bit 60 may be inserted from the back of the lifting arm 14.
  • the adjustment system 50 is most easily adjusted when the roof window 100 is in an open position.
  • the opening for such a screw bit may alternatively and/or additionally by arranged on another side such as the front or on one or both sides of the lifting arm, for instance via the opening 15 described in the above.
  • adjusting the adjustment system 50 changes the position of the first end 31a of the sledge arm 31 relative to the lifting arm 14 by moving along the adjustment screw 53, thereby changing the force balance between pulling force from the spring assembly 20 and the weight of the window, making it possible to adjust the roof window 100 for different roof inclinations.
  • the first end 31a of the sledge arm 31 is therefore shown having two different positions relative to the lifting arm 14 corresponding to adjustment to two different roof inclinations.
  • Figs. 11A and 11B show a zoomed-in detailed view of the adjustment shown in Figs. 10D and 10E where it is clearly shown that the sledge arm 31 and the lifting arm 14 are connected to form a first angle ⁇ 1 between each other, and that the first angle ⁇ 1 formed between the sledge arm 31 and the lifting arm 14 is configured to be changed into a second angle ⁇ 2 when the adjustment system 50 is adjusted. In the embodiment shown, this is carried out by adjusting the position of the first end 31a of the sledge arm 31 by means of the adjustment system 50.
  • the first angle ⁇ 1 may be considered as an outset angle or pre-defined angle, typically forming part of factory settings in a condition of supply of the lifting device 10.
  • Fig. 12 shows a close-up bottom perspective view of the adjustment system, where it is clearly shown that the push arm 40 comprises indications for adjustment to different roof inclinations.
  • the indications are numerical values, ranging from 15 to 60, corresponding to respective degrees. These values indicate and correspond to the desired roof inclination that the user should adjust the lifting device 50.
  • the numerical values shown on the push arm are 15, 30, 45 and 60 corresponding to roof inclinations of 15, 30, 45 and 60 degrees.
  • a marking indicating the ascending or descending order of the numerical values is included in the embodiment shown. In alternative embodiments, higher or lower values of roof inclinations than those indicated in the embodiments shown may be achieved.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Window Of Vehicle (AREA)
EP24218102.2A 2023-12-08 2024-12-06 Dachfenster mit hebevorrichtung Pending EP4567237A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DKPA202370601A DK182065B1 (en) 2023-12-08 2023-12-08 A roof window with a lifting device

Publications (1)

Publication Number Publication Date
EP4567237A1 true EP4567237A1 (de) 2025-06-11

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ID=95065698

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EP (1) EP4567237A1 (de)
CN (1) CN223739214U (de)
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4667695A1 (de) * 2024-06-18 2025-12-24 VKR Holding A/S Dachfenster mit einer hubvorrichtung mit einer schlittenführung mit einem schienen als teil einer seitenrahmenverstärkung
EP4667693A1 (de) * 2024-06-18 2025-12-24 VKR Holding A/S Dachfenster mit einer hebevorrichtung mit einem oberen lagerbeschlag

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989010460A1 (en) 1988-04-08 1989-11-02 V. Kann Rasmussen Industri A/S A window, especially for installation in an inclined roof
EP0733146B1 (de) 1993-12-10 1997-06-11 V. Kann Rasmussen Industri A/S Fenster, insbesondere zum einbau in eine geneigte dachfläche
EP0874103A2 (de) * 1997-04-24 1998-10-28 Dörken Tageslichtsysteme GmbH & Co Produktions KG Schrägdach-Klappschwingfenster
EP1873323B1 (de) 2006-06-27 2011-05-18 VKR Holding A/S Hubvorrichtung und Fenster mit solcher Vorrichtung
EP2762665A2 (de) 2013-02-01 2014-08-06 VKR Holding A/S Schwinglagerstück mit Einrastmitteln und ein Dachfenster mit einem Satz solcher Schwinglagerstücke
WO2019101281A1 (en) 2017-11-24 2019-05-31 Vkr Holding A/S Roof window with a primary frame and at least one secondary frame, method for installing such a roof window and method for dismantling a secondary frame of the roof window
EP4215706A1 (de) 2020-09-15 2023-07-26 Strepetov, Andrey Borisovich Reibungsscharnier für nach oben gerichtete, nach aussen öffnende fenster
EP4390030A1 (de) 2022-12-19 2024-06-26 VKR Holding A/S Dachfenster mit einer hubvorrichtung und verfahren zur montage einer hubvorrichtung

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL220967B1 (pl) * 2007-11-02 2016-02-29 Fakro Pp Spółka Z Ograniczoną Odpowiedzialnością Okno uchylno-obrotowe, zwłaszcza dachowe

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989010460A1 (en) 1988-04-08 1989-11-02 V. Kann Rasmussen Industri A/S A window, especially for installation in an inclined roof
EP0733146B1 (de) 1993-12-10 1997-06-11 V. Kann Rasmussen Industri A/S Fenster, insbesondere zum einbau in eine geneigte dachfläche
EP0874103A2 (de) * 1997-04-24 1998-10-28 Dörken Tageslichtsysteme GmbH & Co Produktions KG Schrägdach-Klappschwingfenster
EP1873323B1 (de) 2006-06-27 2011-05-18 VKR Holding A/S Hubvorrichtung und Fenster mit solcher Vorrichtung
EP2762665A2 (de) 2013-02-01 2014-08-06 VKR Holding A/S Schwinglagerstück mit Einrastmitteln und ein Dachfenster mit einem Satz solcher Schwinglagerstücke
WO2019101281A1 (en) 2017-11-24 2019-05-31 Vkr Holding A/S Roof window with a primary frame and at least one secondary frame, method for installing such a roof window and method for dismantling a secondary frame of the roof window
EP4215706A1 (de) 2020-09-15 2023-07-26 Strepetov, Andrey Borisovich Reibungsscharnier für nach oben gerichtete, nach aussen öffnende fenster
EP4390030A1 (de) 2022-12-19 2024-06-26 VKR Holding A/S Dachfenster mit einer hubvorrichtung und verfahren zur montage einer hubvorrichtung

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4667695A1 (de) * 2024-06-18 2025-12-24 VKR Holding A/S Dachfenster mit einer hubvorrichtung mit einer schlittenführung mit einem schienen als teil einer seitenrahmenverstärkung
EP4667693A1 (de) * 2024-06-18 2025-12-24 VKR Holding A/S Dachfenster mit einer hebevorrichtung mit einem oberen lagerbeschlag

Also Published As

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DK182065B1 (en) 2025-06-26
DK202370601A1 (en) 2025-06-26
CN223739214U (zh) 2025-12-30

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