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
  • E05D15/406—Suspension arrangements for wings supported on arms movable in vertical planes with pivoted arms and sliding guides
• • 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
  • E05D15/48—Suspension arrangements for wings allowing alternative movements
• • 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
  • E05D15/48—Suspension arrangements for wings allowing alternative movements
  • E05D2015/487—Tilting or swinging movements
• • 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
  • E05F1/105—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 compression spring
  • E05F1/1058—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 compression 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
  • E05F1/1041—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
  • 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
  • E05Y2201/624—Arms
  • E05Y2201/626—Levers
• • 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
  • E05Y2201/696—Screw mechanisms
  • E05Y2201/702—Spindles; Worms
• • 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
  • E05Y2201/704—Worm wheels
• • 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
  • E05Y2600/12—Adjustable by manual operation
• • 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
  • E05Y2600/00—Mounting or coupling arrangements for elements provided for in this subclass
  • E05Y2600/50—Mounting methods; Positioning
  • E05Y2600/506—Plastic deformation
• • 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
  • E05Y2600/50—Mounting methods; Positioning
  • E05Y2600/56—Positioning, e.g. re-positioning, or pre-mounting
• • 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
  • E05Y2600/60—Mounting or coupling members; Accessories therefor
  • E05Y2600/626—Plates or brackets
• • 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
  • E05Y2600/60—Mounting or coupling members; Accessories therefor
  • E05Y2600/634—Spacers
• • 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
  • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
  • E05Y2800/20—Combinations of elements
  • E05Y2800/205—Combinations of elements forming a unit
• • 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
  • E05Y2800/20—Combinations of elements
  • E05Y2800/21—Combinations of elements of identical elements, e.g. of identical compression 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
  • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
  • E05Y2800/67—Materials; Strength alteration thereof
  • E05Y2800/682—Strength alteration by reinforcing, e.g. by applying ribs
• • 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, particularly for installation in or on a roof surface having an inclination, comprising a primary frame, at least one secondary frame, a lifting device comprising a sledge, a sledge guide, a set of arms, an adjustment system, and a spring assembly, wherein the spring assembly is configured to be coupled to the sledge.
• 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 middle (generally designated “pivoting roof windows"), 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 near the middle of the sash, either for cleaning of the outside of the pane mounted in the sash or for providing an alternative manner of operation.
• Roof windows of the top-hinged type have a first axis of rotation 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 axis of rotation.
• one hinge of the hinge arrangement will be located at either side of the roof window to define a substantially horizontal axis of rotation.
• top-hinged windows with a second operational condition are for instance disclosed in Applicant's WO-A-89/10460 , EP 0 733 126 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 majorly affected by the inclination of the roof, where the window is installed.
• a lifting device which includes a spring to generate the forces needed to balance the weight of the pane-carrying sash.
• the purpose of this arrangement is to facilitate opening of the window, and the dimensions may be chosen so that the spring can retain the top-hinged sash in equilibrium in a desired opening position.
• Such a lifting device is for instance disclosed in the Applicant's WO 2019/101281 A1 where a spring assembly acts as a force balancing element to the pane-carrying frame by operating on a lifting arm connected to the frame.
• the adjustment system of the lifting device comprises a worm gear comprising a threaded worm and a worm wheel configured to rotate around perpendicularly extending axes by arranging the threading of the threaded worm between cogs of the worm wheel.
• the worm gear has the potential advantage of providing a lifting device that can be adjusted from a side of the lifting device from which the user does not have to place themselves or their tools directly between the side frame member of the primary frame holding the spring assembly and the side sash member being held open by the lifting device, thereby providing a lifting device that is safer to operate. Additionally, the worm gear has the potential advantage of reducing the size of the lifting device by allowing a user to operate the adjustment system from the side rather than e.g. from between two parts of the lifting device.
• the worm gear may be configured to be operated by means of a tool engaging with the threaded worm along the width direction and providing an adjustment of the adjustment system in a direction perpendicular to the width direction.
• the tool may be any suitable tool fitting the selected drive of the worm gear which may for instance be a hex socket screw drive fitting an Allen key as the tool, or a hexalobular socket screw drive fitting a star drive screw bit for insertion into a screwdriver or a power tool.
• the worm wheel of the adjustment system is connected to an adjustment screw including a threaded screw shaft. In this way, a reliable mechanical translation of the rotating movement of the worm wheel into a translational movement of any component connected to the threaded screw shaft is ensured.
• the adjustment system may be configured for adjusting the position of a connection point between an arm comprised in the set arms and one of another arm of the set arms, the secondary frame, the sledge, or the sledge guide.
• the roof window can be configured to be balanced for a range of roof inclinations.
• the roof inclination is measured in relation to a horizontal plane.
• the lifting device has the function of balancing the weight of the secondary frame at least partly.
• “Balanced” is to be understood as in that the lifting device provides a pulling force that balances the gravitational pull on the window in its open position and which pulls it towards a closed configuration.
• the window When the window is balanced a user can open the window to a specific opening degree without the window opening further or closing.
• connection point is defined as a pivot point between two elements which during normal operation of the roof window i.e. during opening and closing of the roof window, is configured to perform only a rotating movement.
• the adjustment system may be configured to provide a balanced roof window for roof inclinations in the range of 10 to 65 degrees by adjustment of the adjustment system.
• the adjustment system is particularly well suited for providing a balanced roof window for roof inclinations in the range of 15 to 60 degrees by adjustment of the adjustment system, such as a roof inclination of 15, 20, 25, 30, 35, 40, 45, 50, 55 or 60 degrees. It is conceivable that a balanced roof window for a roof inclination lower than 10 degrees and/or higher than 65 degrees can be achieved by changing a component of the spring assembly e.g. by changing the spring to a spring with a different spring constant.
• the set of arms may be arranged in different ways to translate a pull from the spring assembly to an opening of the secondary frame.
• the adjustment system may be arranged at any one such connection point, wherein the adjustment system is configured to adjust the position of the connection point e.g. by a translational movement of the connection point.
• the set arms may comprise a lifting arm, a sledge arm, and a push arm, wherein the sledge arm is connected to the sledge in a connection point and the lifting arm in another connection point, and the push arm is connected to the sledge guide in yet another connection point and the lifting arm in yet another connection point, and the lifting arm is additionally connected to the secondary frame in yet another connection point.
• the inventors have found that the set of arms as described are particularly suited for providing a balanced roof window for up to 50 degrees opening relative to a closed configuration of the roof window and particularly suited for opening degrees up to 45 degrees opening.
• connection point is in principle a pivot point between any two elements during normal operation, and the adjustment system is configured for changing the position of a connection point during adjustment of the adjustment system.
• the adjustment system is configured for adjusting the connection point between the lifting arm and the sledge arm. This configuration has proven particularly efficient in obtaining accurate adjustment, at a point which is readily accessible to the user.
• connection point is a bushing arranged on the threaded screw shaft of the adjustment screw of the adjustment system.
• the bushing is configured to move translationally along the threaded screw shaft of the adjustment screw when the threaded worm is rotated by means of a tool.
• the bushing may be the connection point between the lifting arm and the sledge arm, and the bushing may be configured to move translationally along the threaded screw shaft of the adjustment screw providing a translational movement of the pivot point during adjustment of the adjustment device.
• the bushing is coupled to a first end of the sledge arm and a second end of the sledge arm is rotatably connected to the sledge.
• the adjustment system is at least partly arranged in a set of apertures in the lifting arm, and the set of apertures comprises a first aperture configured to receive the adjustment screw, and a second aperture configured to receive the worm wheel and the threaded worm. In this way, large parts of the worm gear are kept hidden and protected within the apertures in the lifting arm.
• the lifting arm may comprise a first lifting arm part and a second lifting arm part. This configuration has several advantages from a manufacturing point of view, and in an assembled condition, in which the first and second lifting arm parts are fitted together, brings additional strength to the structure.
• the second aperture in the lifting arm is provided in a punched portion in each lifting arm part, the punched portion being recessed from the mutually facing sides of the lifting arm parts.
• the adjustment screw is provided with such dimensions that the adjustment screw is completely accommodated within the first aperture of the lifting arm. This improves the compactness even further.
• an exterior side when referred to an exterior side, this relates to a side of a roof window in the mounted condition facing the outdoors or external side of the building.
• an interior side refers to a side facing the internal side of the building, i.e. typically a subjacent room including any light shaft.
• Terms such as “outwards” and “inwards” are directions generally perpendicular to an interior-exterior direction, taking as its base point a centre of the roof window.
• a longitudinal direction is, if nothing else is mentioned, longitudinal along the length of a frame member of the roof window. It is to be understood that the arrangement shown in a horizontal orientation is not the normal orientation as the roof window is installed in an inclined roof.
• 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 and at least one secondary frame which is moveable relative to the primary frame 1.
• the primary frame 1 is configured to be mounted to a roof structure (not shown) defining the inclined roof surface and is stationary once mounted.
• two secondary frames are provided, namely an intermediate frame 3 and a sash 2 carrying a glazing element in the form of a pane 4.
• a single secondary frame is present, such as for instance a pane-carrying sash.
• the primary frame 1 comprises a set of frame members including in this embodiment 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 intermediate frame 3 comprises two arms extending from the top frame member and to a position approximately at the longitudinal centre of the respective side sash member.
• the intermediate frame forms a coherent U-shape including arms and a cross-bar, or is substantially rectangular, i.e. including four frame members as the primary frame 1 and sash 2.
• the sash 2 of the roof window 100 is openable relative to the primary frame 1 to obtain one or more open positions. In such open position(s), the sash 2 and pane 4 are moved out of the plane of the roof window 100 defined by the primary frame 1.
• the roof window 100 is operated using an operating assembly, here including a handle 5 at the bottom sash member configured to interact with a locking device or striking plate at the bottom frame member. Additional or alternative operating assemblies are conceivable.
• the sash 2 of the roof window 100 is top-hung in at least a first operational condition which may correspond to a normal use. That is, in this first operational condition, the sash 2 is rotated about a substantially horizontal axis of rotation A at or near the top frame member and top sash member, by means of a hinge assembly comprising a top bearing 60 connecting the primary frame 1 with the secondary frame(s).
• the top bearing 60 connects the intermediate frame 3 to the primary frame 1, and the sash 2 is rotatable about the axis of rotation A at the top bearing 60 via the intermediate frame 3.
• the sash 2 is rotated about the substantially horizontal first axis of rotation A at or near the top frame member and top sash member between a closed position and an open position.
• the hinge assembly including the top bearing 60 will be discussed in greater details below.
• the sash 2 is able to rotate through approximately 180° in a second operational condition, about a second horizontal axis of rotation B here positioned approximately half-way between the top and bottom of the roof window 100.
• This offers the possibility of utilising the roof window 100 as a pivoting roof window but also provides easy access to the exterior surface of the pane 4 from the interior of the building in which the roof window 100 is installed for cleaning of the window.
• the roof window 100 is provided with a set of a pivot hinge fittings of which a sash hinge part 8 and a frame hinge part 9 of opposite side members of the sash 2 and primary frame 1, respectively, are indicated in Fig. 1 .
• the sash 2 will represent the secondary frames and reference will be made to the sash 2 only, even if the secondary frame structure may involve the intermediate frame 3 as shown in Fig. 1 as well.
• the side frame members extend in a length direction L
• the top frame member extends in a width direction W perpendicular to the length direction L.
• a height direction H extends perpendicular to the length direction L and width direction W.
• References to the length, height, and width in relation to a lifting device 10 is to be understood as in that the lifting device 10 is arranged in the roof window as intended.
• the length, height, and width may also be defined according to the lifting device 10, such as the length direction L being defined by the sliding direction of a sledge in a sledge guide of the lifting device 10, as will be apparent throughout the description.
• the roof window 100 is provided with the lifting device 10 to balance at least part of the weight of the movable components of the roof window 100 and facilitate operation of the window.
• the lifting device 10 is shown from various sides.
• Figs. 2 to 4 the lifting device is shown in an open position of a roof window for a 45-degree pitch.
• the lifting device 10 comprises a spring assembly 11 configured to be coupled to a sledge 12.
• the sledge 12 is configured to slide in a sledge guide 13.
• the sledge guide 13 comprises a first rail 13.1 and a second rail 13.2 which are both shown in Fig. 4 .
• each of the rails 13.1, 13.2 comprises flanges configured to retain the sledge 12 in the sledge guide 13.
• the two rails 13.1, 13.2 together form a track of the sledge guide 13, wherein the sledge 12 is configured to slide in the track of the sledge guide.
• the lifting device 10 furthermore comprises a lifting arm 14, a sledge arm 15, and a push arm 16.
• the arms form a linkage mechanism enabling suitable management of forces and movement in the lifting device.
• the lifting arm 14 is inserted between the primary frame 1 and the sash 2 and extends between a first end 14.1 and a second end 14.2.
• the lifting arm 14 is rotatably connected to the sash 2 by its second end 14.2 at a distance from the top bearing 60.
• the lifting arm 14 is connected to the sledge guide 13 via the push arm 16.
• the push arm 16 is shown with a first end 16.1 rotatably connected to the sledge guide 13 and a second end 16.2 rotatably connected to the lifting arm 14 at a distance from the first end 14.1 of the lifting arm 14.
• the sledge arm 15 comprises a first sledge arm part 15a and a second sledge arm part 15b arranged on the outside of the lifting arm 14.
• the push arm 16 comprises two parts located on the outside of the lifting arm 14 of which one push arm part 16a is shown in Fig. 2 .
• the lifting device 10 of the embodiments shown further comprises an adjustment system 17.
• the adjustment system 17 is connected to the sledge 12 and in turn to the spring assembly 11 by means of the sledge arm 15.
• the sledge arm 15 extends between a first end 15.1 which is rotatably connected to the sledge 12 and a second end 15.2 which is connected to the adjustment system 17.
• the adjustment system 17 is also connected to the lifting arm 14, and the connection between the sledge arm 15 and the lifting arm 14 via the adjustment system 17 will be described in more detail in the following.
• the sledge 12 is coupled to the spring assembly 11 which is arranged to exert a force on the sledge 12 and thereby act as a force balancing element.
• the sledge 12 may be uncoupled from the spring assembly 11. This may, as an example, be an advantage during installation of the roof window where a spring force acting on the sledge 12 may make it difficult to handle the roof window.
• the sledge 12 and the spring assembly 11 are initially in an uncoupled state.
• the spring assembly 11 and the sledge 12 are then coupled by opening the roof window resulting in the sledge 12 sliding towards a coupling device such as a hook 11.1 attached to the spring assembly 11.
• a coupling may for example be realised by the sledge 12 comprising a hook plate 12.1 inserted into side flanges of the sledge 12 for coupling the sledge 12 to the spring assembly 11.
• the sledge 12 will slide in a direction away from the spring assembly 11 towards the top bearing 60 of the roof window while the spring assembly 11, now coupled to the sledge 12, will exert a pulling force on the sledge 12 and provide a resistance against the closing of the roof window, thereby biasing the spring assembly 11.
• the pulling force of the spring assembly 11 and the weight of the roof window are preferably balanced such that the roof window 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 assembly. This balance is affected by the inclination of the roof that the roof window is installed in.
• the configuration of the spring or springs in the spring assembly 11 may be dependent on 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 from the spring assembly 11 acting on the sledge 12 will not balance the weight of the roof window. In one example, the spring assembly 11 may exert too much force on the window thereby forcing the window to open further. In another example, the spring assembly 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.
• the adjustment system 17 is used to easily adjust the roof window according to roof inclination.
• the adjustment system 17 can be used to adjust the roof window for roof inclinations in the range of 15 to 60 degrees.
• top sash member and top frame member are connected by a hinge assembly at least in the first operational condition.
• a top bearing fitting 6 facilitates this connection.
• the top bearing fitting 6 comprises a frame attachment section 6.1 a guide attachment section 6.2 extending from the frame attachment section 6.1, as best seen in Fig. 5A .
• the top bearing 60 is connected to the frame attachment section 6.1.
• the guide attachment section 6.2 comprises means for attaching the top bearing fitting 6 to the sledge guide 13.
• the sledge guide 13 is securely fixed to the side frame member the top bearing fitting 6 facilitates the connection between the sash and the frame via the sledge guide 13.
• the top bearing fitting 6 is arranged between the first rail 13.1 and second rail 13.2 of the sledge guide 13.
• the top bearing 6 is also fixed to both rails 13.1, 13.2, which provides an even load transfer from the spring assembly 11 to the top bearing 6 through the sledge guide 13.
• the lifting device 10 is configured for a selection of different top bearing fittings 6 that serves different purposes, thereby allowing the lifting device 10 to be installed in different types of windows.
• Fig. 5B shows an alternative top bearing fitting 6' which is only attached to the second rail 13.2. This top bearing fitting can e.g. be used for retrofitting other window models with a lifting device according to this disclosure.
• Fig. 5C shows the lifting device 10 from Fig.
• top bearing fitting 6 comprises a hook element 6.3 providing additional attachment to the primary frame 1.
• This top bearing fitting 6" can e.g. be used when the roof window is installed with a heavy sash such as a 3-layered pane carrying sash.
• a top bearing fitting that is attached only to the first rail 13.1 may also be envisioned.
• the adjustment system 17 is configured to adjust the roof window 100 to a specific roof inclination by changing the relative position of a connection point between the lifting arm 14 and the sledge arm 15.
• connection point is a bushing 17.1.
• a connection point is defined as a pivot point between two elements such as between the lifting arm and the push arm, which during normal operation of the roof window i.e. during opening and closing of the window, is configured to perform only a rotating movement.
• the adjustment system is configured to perform a translational movement of the connection point during adjustment of the adjustment system.
• the adjustment system may be configured to perform a translational movement of any one or more connection points between any one of the sledge 12, sledge arm 15, lifting arm 14, sash 2, or push arm 16.
• the adjustment system 17 comprises an adjustment screw 17.2 with a threaded screw shaft 17.3, a worm wheel 17.4, and a screw top 17.5, as best shown in Fig. 6 .
• the adjustment system 17 further comprises a threaded worm 17.6 coupled to the adjustment worm wheel 17.4.
• the threaded worm 17.6 and the worm wheel 17.4 form a worm gear configured to allow adjustment of the adjustment system 17 from a side of the lifting device from which the user does not have to place themselves or their tools directly between the side frame member of the primary frame holding the spring assembly and the side sash member being held open by the lifting device i.e. by inserting a tool in the threaded worm 17.6 from a direction parallel to the width direction W, as indicated by an arrow T in Fig.
• the tool may be any suitable tool fitting the selected drive of the worm gear which may for instance be a hex socket screw drive fitting an Allen key as the tool, or a hexalobular socket screw drive fitting a star drive screw bit for insertion into a screwdriver or a power tool.
• the first end 15.1 of the sledge arm 15 is coupled to the bushing 17.1 and the second end 15.2 of the sledge arm 15 is rotatably connected to the sledge 12.
• the adjustment system 17 is adjusted by rotating the adjustment screw 17.2 such that the bushing 17.1 moves along the length of the threaded screw shaft 17.3 thereby changing the position of the bushing 17.1 and thereby the connection point between the lifting arm 14 and sledge arm 15. This change in position shifts the weight distribution of the lifting device making it possible to adjust the force balance according to the roof inclination.
• the lifting arm 14 comprises a first aperture 14.31 in proximity to its first end 14.1 to accommodate the adjustment screw 17.2.
• This aperture 14.31 is rectangular-shaped in this embodiment.
• the worm wheel 17.4 and the threaded worm 17.6 are accommodated in a separate, second aperture 14.32, shown in Fig. 7 ) in the lifting arm 14.
• the adjustment screw 17.2 is accommodated within the lifting arm 14 at the screw top 17.5.
• the lifting arm 14 comprises two lifting arm parts 14a and 14b.
• the lifting arm parts 14a, 14b are fitted together to move as a single lifting arm 14.
• the lifting arm parts 14a, 14b are formed from metal plates with a thickness of 1.5 mm.
• the lifting arm part 14a comprises a plurality of openings 14.4 each configured for receiving a collar 14.5 from lifting arm part 14b.
• the lifting arm part 14b and collars 14.5 are uniformly formed from the same metal plate. Each collar has a collar height larger than the thickness of the lifting arm part 14a.
• each collar 14.5 is inserted in the corresponding collar receiving opening 14.4 until a part of the collar 14.5 extends from the collar receiving opening on the opposite side from which it was inserted.
• the extending parts of the collars are deformed in a manner that restricts the collars from being retracted from the openings.
• the lifting arm parts 14a, 14b are thereby fitted together without the use of rivets and the combined surface area of contact between the two lifting arm parts is increased, which reduces wear and tear on the respective parts.
• the shape of the lifting arm parts 14a, 14b and the position and form of the openings 14.4 have been carefully selected to optimize strength properties and reduce material consumption.
• the lifting arm parts 14a, 14b abut each other in pre-defined areas.
• each lifting arm part comprises a bent edge 14.6 along its respective periphery and forms half a shell element which together form a closed shell element with a hollow interior. Sufficient strength is retained in each lifting arm part by the bent edge 14.6 spanning the entire circumference of the lifting arm part while reducing the total weight and material consumption of the lifting device.
• the pre-defined areas are here constituted by the areas in which the collars 14.5 interacts with the counterpart collar receiving openings 14.4, and of the area of the bent edges 14.6.
• FIG. 4 the lifting device 10 of Figs. 1 - 3 is shown from a different angle with both rails 13.1, 13.2 of the sledge guide 13 being visible.
• the frame 1 is indicated as a dashed box representing the side frame member to which the lifting device 10 is fastened.
• the first rail 13.1 extends substantially the entire length in a length direction L of the side frame member to which the lifting device is attached.
• the first rail 13.1 is formed from a metal plate having a thickness of 1 mm.
• the first rail 13.1 is firmly fixed directly to the side frame member and forms part of a side frame reinforcement element.
• the first rail 13.1 forming part of the sledge guide 13 and part of the side frame reinforcement serves at least three purposes. Firstly, by having the first rail 13.1 as a side frame reinforcement element, a separate frame reinforcement element can be dispensed with compared to the wooden roof windows in production today which have a separate metal reinforcement plate situated at the exterior frame side, thereby reducing the material consumption of the roof window.
• the first rail 13.1 can be arranged closer to the side frame member of the primary frame compared to windows with a separate reinforcement element arranged between the lifting device and the side frame member, thereby reducing the torque on said side frame member.
• the combined width of the lifting device and side frame reinforcement in the width direction W is reduced making the side sash frame less bulky.
• the second rail 13.2 is here substantially shorter than first rail 13.1 and extends the travelling length of the sledge when the window moves from a closed configuration to a completely open configuration.
• the second rail 13.2 is formed from a metal plate having a thickness of 1 mm, but other dimensions are conceivable.
• the width of the lifting device 10 in the width direction W from the first rail 13.1 to the second rail 13.2 is substantially 30 mm.
• FIG. 8 the lifting device 10 from Figs. 2 - 4 is shown from an end of the lifting device 10 looking in the length direction L along the rails 13.1, 13.2 of the sledge guide 13.
• the top bearing fitting 6 is arranged at a distance from the first rail 13.1 and second rail 13.2 by means of spacers 18.
• the top bearing fitting 6 is arranged between the first rail 13.1 and second rail 13.2 and is arranged closest to the second rail 13.2.
• the top bearing fitting 6 is arranged in a plane P defined by the height direction H and length direction L.
• the set of arms and sledge are arranged symmetrically with respect to the plane P.
• each roof window having a lifting device 10 according to the disclosure, next to each other, while still having room for roof cover elements covering the sash and frame elements.
• FIG. 9 to 14 a further embodiment of a lifting device of a roof window of the invention will be described.
• Reference numerals having the same or analogous function as in the above-described embodiments carry the same reference numerals. Only differences to the above-described embodiments will be described in detail.
• the lifting arm 14 comprises two lifting arm parts 14a and 14b.
• the lifting arm parts 14a, 14b are fitted together in an assembled condition of the lifting device to move as a single lifting arm 14.
• the lifting arm parts 14a, 14b are made from a plate-shaped material such as metal. However, as will be described in further detail below, the connection between the lifting arm parts 14a, 14b makes it possible to reduce the thickness of the plate-shaped material and the thickness of each lifting arm part 14a, 14b is about 1 mm.
• each lifting arm part 14a, 14b comprises a set of raised shoulder portions 14.70a, 14.70b, 14.71a, 14.71b, 14.72a, 14.72b, 14.73a, 14.73b at mutually facing sides of the lifting arm parts 14a, 14b.
• shoulder portions 14.70a, 14.70b, 14.71a, 14.71b, 14.72a, 14.72b, 14.73a, 14.73b of the respective sets are brought together to form connection points between the lifting arm parts 14a, 14b.
• the matching shoulder portions 14.70a, 14.70b, 14.71a, 14.71b, 14.72a, 14.72b, 14.73a, 14.73b of the respective sets are connected with each other by means of clinching. This may be performed in many ways, for instance by TOX ® technology.
• each lifting arm part 14a, 14b comprises a first bearing aperture 14a.16, 14b.16 for the connection to the push arm 16, and a second bearing aperture 14a.2, 14b.2 for the connection to the secondary frame 2
• each of the first bearing apertures 14a.16, 14b.16 and the second bearing apertures 14a.2, 14b.2 comprises a bearing flange of a pre-defined height.
• the lifting arm parts 14a, 14b are connected to each other by aligning respective first bearing apertures 14a.16, 14b.16 and second bearing apertures 14a.2, 14b.2. This may be carried out by placing the lifting arm parts 14a, 14b on a template with two pins such that the first bearing apertures 14a.16, 14b.16 are aligned with each other and the second bearing apertures 14a.2, 14b.2 are aligned with each other. Subsequently, the clinching of the matching shoulder portions 14.70a, 14.70b, 14.71a, 14.71b, 14.72a, 14.72b, 14.73a, 14.73b is performed.
• FIG. 12 and 13 A further feature of the present embodiment is shown most clearly in Figs. 12 and 13 , namely that the second aperture 14.32 in the lifting arm 14, configured to receive the worm wheel 17.4 and the threaded worm 17.6, is provided in a punched portion 14.8a, 14.8b in each lifting arm part 14a, 14b in such a way that the punched portion 14.8a, 14.8b is recessed from the mutually facing sides of the lifting arm parts 14a, 14b. In this way, a hollow is formed by the mutually facing concave sides of the punched portions 14.8a, 14.8b.
• the adjustment screw 17.2 is provided with such dimensions that the adjustment screw 17.2 is completely accommodated within the first aperture 14.31 of the lifting arm 14. In this way, the only parts of the adjustment device 17 protruding from the contour of the lifting arm 14 are the worm wheel 17.4 and the threaded worm 17.6 as illustrated in Fig. 11 .

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