EP4390029A1 - Fenêtre de toit avec un dispositif de levage - Google Patents

Fenêtre de toit avec un dispositif de levage Download PDF

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Publication number
EP4390029A1
EP4390029A1 EP23218122.2A EP23218122A EP4390029A1 EP 4390029 A1 EP4390029 A1 EP 4390029A1 EP 23218122 A EP23218122 A EP 23218122A EP 4390029 A1 EP4390029 A1 EP 4390029A1
Authority
EP
European Patent Office
Prior art keywords
adjustment
sledge
arm
guide
roof window
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
EP23218122.2A
Other languages
German (de)
English (en)
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 EP4390029A1 publication Critical patent/EP4390029A1/fr
Pending legal-status Critical Current

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Classifications

    • 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
    • E05F1/1041—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
    • 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
    • E05Y2201/688—Rollers
    • 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 intermediate frame, and a lifting device comprising a lifting arm inserted between the primary frame and the at least one secondary frame.
  • 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 0 733 146 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.
  • 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.
  • the lifting arm has a first end rotatably connected with a sledge slidably connected with the primary frame in a sledge guide, and a second end connected with the at least one secondary frame.
  • the lifting device furthermore comprises a spring assembly configured to be coupled to the sledge.
  • the lifting device further comprises an adjustment arm having a first end rotatably connected to the lifting arm and a second end rotatably connected to the sledge guide, wherein the lifting arm and the sledge guide extend along a length direction defining a central plane, the central plane extending along the length direction and a height direction, the height direction being perpendicular to the length direction, and wherein the forces applied by the lifting arm onto the central plane are balanced.
  • This arrangement of arms and interconnections of arms with a sledge in a sledge guide provides a comfortable and balanced operation of the roof window.
  • the lifting arm moves translationally in the sledge guide in the sliding direction of the sledge by having a rotational connection to the sledge at the first end of the lifting arm.
  • the second end of the lifting arm moves translationally along the secondary frame. This provides a low friction opening / closing movement of the roof window.
  • the configuration of the lifting device results in any tension applied to the interconnection of the lifting arm with the sledge guide being counterbalanced.
  • the stable configuration of the lifting device further ensures that no accidents or failures occur during opening or closing of the window.
  • the lifting arm and the sledge guide extend along a length or longitudinal direction, and which in a closed position of the window are parallel to each to other.
  • the central plane may extend along the length direction and a height direction, the height direction being perpendicular to the length direction. While opening and closing the window, the lifting arm and/or the adjustment arm may be extending along the central plane or along a plane being parallel to the central plane.
  • the sledge guide extends in the length or longitudinal direction.
  • the lifting arm may extend in the length or longitudinal direction in a closed position of the roof window.
  • the central plane extends in the length direction and the height direction.
  • the height direction is perpendicular to the length direction.
  • the sledge guide may be symmetrical with respect to the central plane.
  • the sledge guide comprises a main portion, preferably U-shaped, extending in a longitudinal direction having a width, the plane positioned in the centre of the width of the main portion of the sledge guide.
  • the sledge guide may have elevated outer portions forming a channel where the sledge is configured to be attached into.
  • the sledge guide may additionally comprise one or a plurality of longitudinal flanges projecting from one or both longitudinal edges of the sledge guide to ensure a stable movement of the lifting arm inside the sledge guide.
  • the flanges may have a substantial L-shape.
  • the sledge guide comprises two opposing flanges, a first flange and a second flange projecting from the longitudinal edges of the sledge guide and being formed as stepped projections, thereby forming a 90 degree angle with the outer portions of the sledge guide.
  • This configuration of the sledge guide ensures a stable and safe support of the lifting device and ease of its operation.
  • the sledge guide may comprise elements, such as mounting brackets, rivets, runners, discs etc. which are not symmetrical with respect to the central plane.
  • the sledge guide comprises a sledge guide rivet holding and connecting the two opposing flanges of the sledge guide together and keep them fixed at a mounted position. That provides a tight connection and eliminates any friction that may occur between the two flanges due to the opening and closing of the window.
  • the lifting arm may comprise a first lifting arm and a second lifting arm arranged symmetrically with respect to the central plane.
  • the two lifting arms may ensure a stronger construction of the lifting device, balancing the forces applied by the lifting device to the sledge and to the sledge guide and thus a longer lifetime of the lifting device.
  • the two opposing lifting arms may also provide a stable and stiff connection to the secondary frame and facilitate the opening and closing movement of the window.
  • Each of the first and second lifting arms may comprise a straight portion and/or an inclined portion with respect to the central plane.
  • the adjustment arm comprises a first adjustment arm and a second adjustment arm mounted to each other and arranged symmetrically with respect to the central plane.
  • the two opposing and adjacent adjustment arms are fixed together such that no relative movement between the two is allowed. That enables a secure and stable connection to the sledge guide.
  • the two opposing adjustment arms may be distanced at each other at a connection point close to the adjustment system and/or they may be mounted firmly and tightly together at the connection point to the lifting arm.
  • the tight connection means that no substantial gap is created between the two arms.
  • the first adjustment arm and the second adjustment arm may be fastened on opposite sides of the adjustment screw.
  • the first and second adjustment arm may be abutting each other and be symmetrically positioned around the central plane .
  • the sledge guide and the lifting arm may extend in the central plane.
  • the central plane may extend through the middle of the width of the sledge guide.
  • the central plane may therefore extend through the middle of the width of the sledge positioned in the sledge guide.
  • the sledge may be arranged in the sledge guide to slide in a direction of the central plane.
  • the link connection between the adjustment arm and the sledge guide may be positioned in the central plane. This is to be understood such that the resulting force of the adjustment arm acting on the sledge guide is substantially in a direction defined by the central plane. It may be envisioned that the two adjustment arms are not structurally symmetric around the central plane, but that the resulting force from the adjustment arm acting on the sledge guide is still in a direction defined by the plane. It may also be envisioned that the adjustment arm may be equipped with sliding discs or other components not contributing significantly to the forces acting in the link between the adjustment arm and the sledge guide and in the link between the adjustment arm and the lifting arm.
  • Symmetrically arranged around the central plane is in general to be understood as arranged such that the direction of the resulting force acting on the symmetrically arranged feature or features extends in a direction defined by the plane.
  • the sledge may comprise at least one runner configured to facilitate operation of the sledge, the runner being arranged symmetrically with respect to the central plane.
  • the runner attaches to the sledge and to the first end of the lifting arm, thus creating a durable connection to avoid any friction created between the two components.
  • the runner may comprise plastic and/or an elastic material.
  • the second end of the lifting arm and the secondary frame may have a roller connection via sash wheel.
  • Other forms of connection may also be envisioned.
  • the second end of the lifting arm and the secondary frame may be connected via a sledge system comprising a sledge and a sledge guide.
  • a sash wheel on the second end of the lifting arm provides a minimal friction connection to the secondary frame.
  • a sash wheel connection also minimizes the wear and tear on both the secondary frame and the lifting arm.
  • the sash wheel is preferably mounted on the lifting arm.
  • the lifting arm is further connected to the sledge guide through an adjustment arm which ensures that the lifting arm is securely attached to the sledge guide, while allowing the first end and second of the lifting arm to slide/roll simultaneously.
  • the adjustment arm is rotatably attached to the lifting arm at a point between the first end and second end of the lifting arm. This point may be closer to the first end of the lifting arm, or closer to the second end of the lifting arm or substantially half-way between the first end and second end of the lifting arm.
  • the adjustment arm can rotate relative to the sledge guide.
  • the adjustment arm may be rotatably connected to the sledge guide directly and/or indirectly.
  • the adjustment arm may be attached to the sledge guide indirectly through a component separate from the wheel guide, but which is in some manner fixed to the sledge guide, such as a part comprised in the primary frame.
  • the lifting arm may further be provided with sliding discs on one side of both sides of the lifting arm towards the sledge guide.
  • the sliding discs reduce the distance between the lifting arm and the sledge guide thereby adding stability to the lifting device when the lifting arm travels in the sledge guide.
  • the sliding discs may comprise polymer.
  • the sliding discs may be fastened to the lifting arm through holes on the lifting arm.
  • the sliding discs may be fastened to the lifting arm by an adhesive.
  • the forces exerted by the adjustment arm and/or the sledge guide onto the central plane are balanced.
  • This configuration provides for an overall balanced lifting device, where support is provided at both sides extending in a longitudinal direction of the sledge guide.
  • the adjustment arm and the sledge guide are substantially symmetrical with respect to the central plane. That means that the forces that are applied to each of the side of the lifting device are counterbalanced by the forces applied to the opposite side of the lifting device.
  • the sash wheel may be configured to roll on a wheel guide during an opening and/or closing movement of the roof window, the wheel guide being connected to the secondary frame.
  • the sash wheel may further cooperate with the wheel guide by magnetic means or other types of engagement.
  • the wheel guide provides a suitable track for the sash wheel to move onto.
  • the wheel guide may also provide a protective medium between the sash wheel and the secondary frame.
  • the wheel guide may be made of steel.
  • the wheel guide may be made of the same material as the sash wheel.
  • the wheel guide may be fastened to the sash with fastening means such as screws, adhesive or rivets or by formfitting the wheel guide to the sash such that they are structurally interlocked, or any combination of thereof.
  • the wheel guide may comprise longitudinal flanges projecting from one or both longitudinal edges of the guide to ensure a stable movement of the wheel on the guide. The flanges may thus form a channel where the sash wheel can move into.
  • the lifting arm may be connected to the sash wheel via a sash wheel rivet.
  • the sash wheel rivet provides an easy installation of the sash wheel in the lifting arm and a secure operation of the sash wheel.
  • the rivet may be made of steel.
  • the sash wheel may comprise fibre-reinforced plastic.
  • the sash wheel may comprise 25 - 45 %vol glass fibre.
  • the sash wheel provides enhanced strength with an optimal strength found between 25 - 45 %vol glass fibre.
  • the sash wheel may further comprise other types of plastic.
  • the sash wheel may comprise metal such as copper or steel and/or an elastic material such as rubber or silicone.
  • the sash wheel and/or wheel guide may have fitting serrations.
  • Fitting serrations on the wheel and/or wheel guide provide an enhanced grip and prevents the sash wheel from undesired skidding.
  • the sash wheel and/or wheel guide may alternatively comprise a track and an accommodated track wheel. Alternatively or additionally, the sash wheel and/or wheel guide may be provided with rough surfaces for enhanced grip.
  • the lifting device may further comprise an adjustment system.
  • the adjustment arm may be rotatably connected to the sledge guide through an adjustment system.
  • the adjustment system provides a mechanism for adjusting the weight of the pane-carrying sash with the force provided by the spring assembly, according to the roof inclination, such that the pane-carrying frame can be balanced in various roof inclinations without modifications to the spring assembly.
  • the adjustment arm may be connected to the lifting arm through an adjustment system.
  • the adjustment arm and the lifting arm may be connected at an angle ( ⁇ 1 ), wherein the angle ( ⁇ 1 ) assumes a second angle ( ⁇ 2 ) by adjusting the position of the second end of the adjustment arm by means of the adjustment system.
  • the change of the angle ( ⁇ 1 ) to a second angle ( ⁇ 2 ) is to be understood as the adjustment arm changing position without movement of the lifting arm.
  • an installer may open the window fully after installing the window and adjust the adjustment system according to the roof inclination.
  • the adjustment system may provide a balanced sash in roof inclinations preferably in the range of 15° - 65°. Higher roof inclinations may also be accommodated with slight modifications to the lifting device.
  • the roof inclination value may be pre-selected on the adjustment system to adapt to a specific roof inclination the roof window is intended to be installed on or can be changed on spot after the window is installed. Balanced is to be understood as the window taking a position between fully opened and fully closed without further opening or closing due to a pull from the spring assembly or from weight of the window, respectively.
  • the adjustment system may comprise an adjustment screw.
  • the adjustment screw provides a possible mechanism for adjusting the position of the adjustment arm.
  • the adjustment screw may be fixed to an adjustment base.
  • the adjustment screw can rotate about its longitudinal axis.
  • the adjustment base may be fitted in the sledge guide.
  • the adjustment screw may be fixed to the sledge guide through the adjustment base.
  • the adjustment base may comprise plastic.
  • the second end of the adjustment arm is fitted to the adjustment screw such that the adjustment arm travels along the length direction of the adjustment screw when the adjustment screw is screwed upon.
  • the adjustment screw may further comprise a cogwheel at one of its ends, preferably at the end located in proximity with the sledge guide when in a mounted position.
  • the cogwheel may be adapted to cooperate with the outer geometry of a mechanical tool.
  • the adjustment system may further comprise an adjustment bushing, wherein the second end of the adjustment arm is connected to the adjustment screw through the adjustment bushing.
  • the adjustment bushing allows for minimum friction connected between the adjustment screw and the adjustment arm. As the adjustment arm is adjusted on the adjustment screw, the angle between the adjustment arm and the lifting arm changes. Simultaneously, the angle between the adjustment arm and the adjustment screw may change.
  • the bushing provides a suitable mechanism that allows such a rotation.
  • the bushing may comprise a cylindrical or cyclical body engaging with the adjustment screw via a through hole.
  • the through hole of the adjustment bushing may have an inner geometry to engage with an outer bushing of the adjustment screw.
  • the adjustment bushing may further have at least one end part projecting from the body and configured to engage with a track or a slot on the sledge guide. This track or slot may be called engagement slot.
  • the adjustment system may further comprise a disc configured to be in connection with and/or adjacent to the second end of the adjustment arm.
  • the disc may further be adjacent and/or connected to the adjustment bushing such that the disc encompasses the body of the adjustment bushing and the end part projects from the disc.
  • the sledge guide may further comprise the adjustment slot, wherein the adjustment system is configured to be accommodated in the adjustment slot.
  • an adjustment slot may be provided in the sledge guide such that the adjustment bushing and the adjustment arm can be adjusted without colliding with the sledge guide. Additionally, such an adjustment slot may provide a way to visually inspect the adjustment level of the adjustment system by acting as a way to observe the adjustment screw, the adjustment bushing or the adjustment arm. Indications such as numerical values, letters or marks for the adjustment may be provided along the adjustment slot to indicate the position of the adjustment arm on the adjustment screw to the user according to the roof inclination.
  • the adjustment slot may be linear.
  • the adjustment slot may alternatively be slightly curved.
  • the adjustment slot may run in direction that intersect with the direction of the sliding direction of the sledge. It may run in direction that is perpendicular to the sliding direction of the sledge.
  • the adjustment bushing may be configured to be engaged with the adjustment slot.
  • the adjustment bushing By fitting the adjustment bushing to the adjustment slot, the entire adjustment system is securely fixed in the sledge guide.
  • the adjustment bushing will be restricted to travel along the length of the adjustment slot which results in the second end of the adjustment arm being locked to a position along the adjustment slot.
  • the adjustment bushing may be used as an indicator for where on the adjustment screw the adjustment arm is positioned.
  • the sledge guide may comprise an opening 161 adapted to receive a mechanical tool such as a tip end of a drill bit fitted to the adjustment system.
  • a mechanical tool such as a tip end of a drill bit fitted to the adjustment system.
  • Such opening may be a through hole or a blind hole on the outer surface of the sledge guide.
  • the mechanical tool may be any tool that can provide an adjustment of the adjustment system such that the second end of the adjustment arm is displaced related to the sledge guide through the adjustment system.
  • the mechanical tool may be fitted to the adjustment screw of the adjustment system.
  • the opening may be provided in the sledge guide.
  • the opening may be provided in the sledge guide in a position close to an end of the adjustment screw.
  • There may be two or more openings in the sledge guide for receiving a mechanical tool fitted to the adjustment system.
  • the adjustment system may best be reached by the installer or user of the window through the opening of the window.
  • the same lifting device may be used in both sides of the room window with equally easy access to the adjustment system in both lifting devices.
  • the sledge guide may comprise a first side and a second side being symmetrical with respect to the central plane, wherein the opening for insertion of the drill bit is comprised on each of the first and second sides of the sledge guide.
  • sides it is hereby commonly referred to the sides extending in a longitudinal direction.
  • ends it is commonly referred to the ends extending in a width direction perpendicular to the longitudinal direction.
  • the sledge guide may further comprise openings such as holes adapted to receive screws for mounting the sledge guide onto the window frame.
  • the roof window may further comprise an insulating glazing unit.
  • An insulating glazing unit Two-layer or three-layer glass also known as insulating glazing units (IGUs) have better thermal properties than single layered glass but are usually heavier and more cumbersome to install and lift. Lifting devices are therefore beneficial to use in windows comprising IGUs.
  • IGUs insulating glazing units
  • the sledge may comprise a sledge wheel configured to roll on the sledge guide and/or a runner mounted on the sledge configured to cooperate and/or engage with the sledge guide.
  • a sledge wheel may allow steering of the sledge along the length of the sledge guide.
  • the sledge wheel may be provided substantially next to the connection between the sledge and the lifting arm.
  • the lifting arm may be connected to the sledge through the sledge wheel.
  • the sledge wheel may additionally add support for the sledge in the sledge guide.
  • the sledge may additionally and/or alternatively be provided with one or more runners.
  • the one or more runners mounted on the sledge may provide additional support for the sledge in the sledge guide.
  • the runners may be made of a polymer.
  • the runners may comprise glass fibre.
  • the runner may be configured to be connected to the first end of the lifting arm and be mounted on the sledge.
  • the sash wheel may have a diameter of approximately 30 mm.
  • a sash wheel with a diameter of approximately 30 mm ensures that the sash wheel runs on the secondary frame in a stable manner.
  • a sash wheel of approximately 30 mm in diameter also fits well in the lifting arm without colliding with other features.
  • the lifting arm may be dimensioned accordingly.
  • a sash wheel of approximately 20 mm in diameter may also be implemented.
  • a sash wheel of approximately 40 mm may be further implemented.
  • the sash wheel may have one or more cavities or apertures.
  • the sash wheel may have a substantially round shape.
  • the cavities may be positioned along the periphery of the round sash wheel and may be equally spaced with each other.
  • the sash wheel may be optimised with regards to weight, material usage and strength.
  • a series of cavities may be provided in the sash wheel.
  • Such cavities may be provided through a topology optimization algorithm.
  • the sash wheel may be moulded.
  • the sash wheel may be provided as a one-piece. Moulding the sash wheel provides an easy manufacturing of the wheel while allowing incorporation of cavities and serrations.
  • the sledge guide may be integrally formed as one piece, thus having an increased tensile strength.
  • a roof window 100 is shown.
  • the roof window 100 is intended to be installed in an inclined roof surface (not shown).
  • the roof window 100 comprises a primary frame 1, a secondary frame such as a sash 2, and a pane 4.
  • a secondary frame such as a sash 2, and a pane 4.
  • 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 as will be described in further detail below.
  • 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. It is however conceivable to apply some principles of the presented concepts for roof windows on different types of windows having other opening patterns, or being provided as fixed skylights.
  • FIG 1A Further details shown in Fig 1A include an operating assembly, 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.
  • 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 furthermore comprises a hinge assembly.
  • 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.
  • Fig. 2 shows a lifting device 10 installed in a roof window with a primary frame 1 and a sash 2.
  • the lifting device is installed between the primary frame 1 and the sash 2 and comprises a sledge guide 16 fixed to the primary frame 1 and a lifting arm 14 with a first end 12 rotatably connected or fixed to a sledge 30 sliding in the sledge guide 16.
  • a sash wheel 40 is attached to the lifting arm 14.
  • Fig.1 the connection between the sash 2 and the lifting arm 14 is shown as a sash wheel 40 attached to the lifting arm 14 by means of a wheel rivet 42.
  • the sash wheel 40 is therefore in a rolling connection with the sash 2 by means of the sash wheel 40.
  • the sash wheel 40 is configured to roll on a wheel guide 41.
  • the wheel guide 41 acts as a rail for the sash wheel during opening and closing of the window.
  • the wheel guide 41 also provides protection for the sash 2 as the sash wheel rolls on the sash 2 during opening and closing of the roof window.
  • the lifting arm 14 is also attached to the sledge guide 16 through an adjustment arm 52.
  • the adjustment arm 52 is at one end rotatably attached to lifting arm 14.
  • the adjustment arm 52 is attached to the lifting arm 14 at a point approximately equally distanced between the first end 12 of the lifting arm 14 and the second end 13 of the lifting arm.
  • the adjustment arm 52 can in other embodiments be rotatably attached to the lifting arm at a point closer towards the first end 12 of the lifting arm 14 or at a point closer towards the second end 13 of the lifting arm 14.
  • the adjustment arm 52 is connected to the sledge guide 16 through an adjustment system 50, which will be described further below.
  • the adjustment arm 52 may in other embodiments be rotatably attached to the sledge guide directly.
  • the sledge 30 is attached to a spring assembly 20 which is arranged to exert a force on the sledge 30.
  • the sledge 30 may be uncoupled from the spring assembly 20. 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 as shown in Fig. 3A .
  • 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 attached to a spring comprised in the spring assembly 20.
  • the pulling force of the spring and the weight of the roof window are preferably balanced such that the roof window can be positioned in an open position without closing due to its own weight or opening further due to the pull from the spring in the spring assembly. This balance is also influenced by the inclination of the roof that the roof window is installed in.
  • the spring in the spring assembly 30 may be adjusted to balance the roof window in a specific roof inclination.
  • the spring force acting on the sledge will not be balanced to the weight of the window.
  • the spring may exert too much force on the window thereby forcing the window to open further.
  • the spring may be too weak, and the window will close due to its own weight. In both cases, the window is difficult for the user to operate and potentially hazardous.
  • an adjustment system as shown in Figs. 2 - 3 and 6 - 11 may be used. In these embodiments, the adjustment system is installed to adjust the position of the second end of the adjustment arm 52 in the sledge guide 16.
  • the adjustment system 50 is instead installed in the lifting arm 14 such that the first end of the adjustment arm is attached to the lifting arm 14 through an adjustment system and the second end of the adjustment arm is attached to the sledge guide.
  • An adjustment rivet 57 - better shown in Fig. 3B - connects the lifting arm 14 to the adjustment arm 52 firmly, while enabling their rotational movement with respect to each other.
  • a sliding disc 43 on the lifting arm 14 is present.
  • a further sliding disc may be arranged on the other side of the lifting arm 14 as well.
  • the sliding disc reduces the distance to the sledge guide 16 and adds stability to the lifting arm as it travels from an open to a closed position or vice versa.
  • Fig. 4 shows a sash wheel 40 in a wheel guide 41 where the wheel guide 41 is provided with longitudinal flanges projecting from both longitudinal edges of the wheel guide thereby forming a channel which the sash wheel 40 can move in.
  • Fig. 5 shows an alternative embodiment of the lifting device 10 where the wheel guide 41 is configured as a plate.
  • the second end of the lifting arm may also comprise flanges that surround the sash wheel or part of the sash wheel, as shown in Fig. 5 .
  • Figs. 6 and 7 each shows a part of the lifting device with the lifting arm 14 extending upwards and away from the sledge 30.
  • the lifting arm 14 comprises a first lifting arm 141 and a second lifting arm 142 with the two lifting arms 141, 142 arranged on opposite sides of the adjustment arm 52.
  • the two lifting arms 141, 142 are preferably similarly shaped with both the sash wheel and adjustment arm arranged between the two lifting arms 141, 142.
  • the wheel rivet 42 displayed in Figs. 4 and 5 may be used as means to keep the two lifting arms 141, 142 fixed to each other. Other means may also be used to keep the two lifting arms 141, 142 fixed to each other.
  • the two lifting arms 141, 142 may be fixed to each other through the attachment to the adjustment arm 52 and through the attachment to the sledge 30. Each of these means of fixing the two lifting arms to each other may be used in combination or individually.
  • the adjustment arm 52 comprises a first adjustment arm 521 and a second adjustment arm 522.
  • Figs. 6 and 7 additionally show the adjustment system 50.
  • Fig. 6 particularly shows an adjustment slot 55 with an adjustment bushing 54 engaged with the adjustment slot 55.
  • the adjustment slot 55 is a linear slit -in the form of a track- on an outer part of the sledge guide 16 limiting the adjustment bushing 54 and thereby the adjustment arm 52 to travel in a linear direction in the adjustment slot 55.
  • the adjustment slot 55 may alternatively be slightly curved such that the adjustment arm 52 travels in a semi-circle.
  • the longitudinal direction of the adjustment slot 55 may additionally or alternatively be arranged in a direction substantially in parallel with the sliding direction of the sledge.
  • the longitudinal direction of the adjustment slot 55 may in other embodiments travel in a direction that is perpendicular to the sliding direction of the sledge 30 in the sledge guide 16.
  • Fig. 7 shows a sledge guide rivet 58 for added stability of the lifting device 10.
  • the sledge guide rivet 58 locks the two sides of the sledge guide to each other and simultaneously ensure that the adjustment system also shown in Fig. 7 is kept in place.
  • Fig. 8 shows a lifting device 10 for a roof window from a top perspective view. It is clearly shown that in this embodiment the first and the second adjustment arms 521, 522 are distanced and separated from each other at their attachment to the adjustment system 50, but are attached to each to other at a point located close to their attachment to the adjustment system 50 and up until their attachment to the lifting arms 141, 142. Alternatively, the adjustment arms 521, 522 may each have a longer inclined portion and an attachment point closer to the attachment to the lifting arm.
  • Fig. 9 shows a perspective view of the lifting device in an open position, where a central plane P is illustrated.
  • the imaginary central plane P extends in a longitudinal L direction and a height direction H and is defined as the plane where the respective forces exerted by the lifting arm and the adjustment arm are balanced.
  • the height direction H is perpendicular to the length L direction.
  • the two lifting arms 141, 142 are therefore symmetrically arranged with respect to the central plane P.
  • the sledge guide is shown as extending along the length direction that defines the central plane P.
  • the lifting device is shown in an open position and the lifting arm extends substantially in the height direction in this open position.
  • the lifting device 10 is in the closed position, such as shown in Fig.
  • the lifting arm extends substantially along the length direction together with the sledge guide.
  • the two adjustment arms 521, 522 are symmetrically arranged with respect to the central plane P.
  • the two lifting arms 141, 142 are positioned such that the forces exerted by the lifting arm 14 onto the central plane P are balanced.
  • the sledge guide 16 is symmetrical with respect to the central plane P.
  • the lifting arm 14 comprises a first lifting arm 141 and a second lifting arm 142 arranged symmetrically with respect to the central plane P.
  • Figs. 10 and 11 show a lifting device from a side view.
  • the adjustment arm 52 is adjusted such that its second end is in a position creating an angle ⁇ 1 between the lifting arm 14 and the adjustment arm when the window is in an open position.
  • the roof window is in the same open position as in Fig. 10 and the second end of the adjustment arm 52 is adjusted such that the angle between the adjustment arm 52 and the lifting arm 14 is an angle ⁇ 2 .
  • the adjustment arm 52 can be adjusted by means of a mechanical tool 60 such as a drill bit fitted and rotated into an opening 161 in the sledge guide 16 of the lifting device 10, also shown in Figs 3A, 3B .
  • the adjustment arm 52 shown in Fig. 10 is arranged for a roof window installed in a roof with an inclination of approximately 65°
  • the roof window shown in Fig. 11 is arranged for a roof window installed in a roof with an inclination of approximately 15°.
  • the adjustment arm 52 By adjusting the adjustment arm 52 to a position in between these two extremes the forces can be balanced for roof inclinations varying in the range of 15° to 65°.
  • the adjustment system may also adjust the lifting device to operate smoothly in roof windows installed in lower or higher roof inclinations, such as 10° or 70°.
  • Figs. 12A - 12B show an example of how a mechanical tool and an adjustment system may interact.
  • a mechanical tool 60 is shown to fit into the opening 161 in the sledge guide 16.
  • the mechanical tool 60 has a drill bit fitted to the adjustment screw 53.
  • Fig. 12A shows how an adjustment bushing 52 may be fitted onto the adjustment screw 52.
  • Fig. 12A also shows how the adjustment bushing 52 is fitted to an adjustment slot 55.
  • the adjustment slot 55 has indications showing what roof inclination the adjustment system 50 is adjusted for.
  • the adjustment system 50 is adjusted to a roof inclination of approximately 15°.
  • the adjustment system 50 is adjusted to a roof inclination of approximately 65°.
  • Fig. 12B it is shown how the adjustment arm 52 may be connected to the adjustment bushing 52.

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  • Window Of Vehicle (AREA)
EP23218122.2A 2022-12-19 2023-12-19 Fenêtre de toit avec un dispositif de levage Pending EP4390029A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DKPA202270629 2022-12-19

Publications (1)

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EP4390029A1 true EP4390029A1 (fr) 2024-06-26

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EP23218122.2A Pending EP4390029A1 (fr) 2022-12-19 2023-12-19 Fenêtre de toit avec un dispositif de levage

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EP (1) EP4390029A1 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989010460A1 (fr) 1988-04-08 1989-11-02 V. Kann Rasmussen Industri A/S Fenetre destinee notamment a etre installee dans un toit incline
WO1995016097A1 (fr) * 1993-12-10 1995-06-15 V. Kann Rasmussen Industri A/S Fenetre s'installant en particulier dans le versant d'un toit incline
EP0679775B1 (fr) * 1994-04-26 1999-04-28 ROTO FRANK Aktiengesellschaft Fenêtre basculante/oscillante de toiture avec contrebalance
WO1999028582A1 (fr) * 1997-11-27 1999-06-10 Peter William Harkins Mecanisme servant a ouvrir et a fermer une fenetre ou une porte
EP1873323B1 (fr) 2006-06-27 2011-05-18 VKR Holding A/S Dispositif élévateur et fenêtre comprenant un tel dispositif
EP2762665A2 (fr) 2013-02-01 2014-08-06 VKR Holding A/S Accessoire de charnière à pivot avec moyens d'engagement et fenêtre de toit comprenant un ensemble de ces accessoires de charnière à pivot
EP3045636A1 (fr) * 2015-01-15 2016-07-20 Siegenia-Aubi Kg Mécanisme d'aide à l'ouverture et à la fermeture avec dispositif de régulation pour fenêtre ou porte
WO2019101281A1 (fr) 2017-11-24 2019-05-31 Vkr Holding A/S Fenêtre de toit avec un cadre principal et au moins un cadre secondaire, procédé d'installation d'une telle fenêtre de toit et procédé de démontage d'un cadre secondaire de la fenêtre de toit
WO2019101279A1 (fr) * 2017-11-24 2019-05-31 Vkr Holding A/S Fenêtre de toit avec ensemble ressort amélioré

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989010460A1 (fr) 1988-04-08 1989-11-02 V. Kann Rasmussen Industri A/S Fenetre destinee notamment a etre installee dans un toit incline
WO1995016097A1 (fr) * 1993-12-10 1995-06-15 V. Kann Rasmussen Industri A/S Fenetre s'installant en particulier dans le versant d'un toit incline
EP0733146B1 (fr) 1993-12-10 1997-06-11 V. Kann Rasmussen Industri A/S Fenetre pour installation en particulier dans le versant d'un toit incline
EP0679775B1 (fr) * 1994-04-26 1999-04-28 ROTO FRANK Aktiengesellschaft Fenêtre basculante/oscillante de toiture avec contrebalance
WO1999028582A1 (fr) * 1997-11-27 1999-06-10 Peter William Harkins Mecanisme servant a ouvrir et a fermer une fenetre ou une porte
EP1873323B1 (fr) 2006-06-27 2011-05-18 VKR Holding A/S Dispositif élévateur et fenêtre comprenant un tel dispositif
EP2762665A2 (fr) 2013-02-01 2014-08-06 VKR Holding A/S Accessoire de charnière à pivot avec moyens d'engagement et fenêtre de toit comprenant un ensemble de ces accessoires de charnière à pivot
EP3045636A1 (fr) * 2015-01-15 2016-07-20 Siegenia-Aubi Kg Mécanisme d'aide à l'ouverture et à la fermeture avec dispositif de régulation pour fenêtre ou porte
WO2019101281A1 (fr) 2017-11-24 2019-05-31 Vkr Holding A/S Fenêtre de toit avec un cadre principal et au moins un cadre secondaire, procédé d'installation d'une telle fenêtre de toit et procédé de démontage d'un cadre secondaire de la fenêtre de toit
WO2019101279A1 (fr) * 2017-11-24 2019-05-31 Vkr Holding A/S Fenêtre de toit avec ensemble ressort amélioré

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