Sun protection element in an add-on frame of a window behind an add-on pane

Abstract

The invention relates to window frame profiles for producing window frames and window sash frames (10, 11) from plastic, metal or wood, consisting of at least one glazing bed for accommodating an interior-side single-pane or multi-pane glazing (30). The innovation is characterised in that a U-shaped add-on frame is mounted in front of the window frame profile as an attachment or as a component of the window frame profile (12). The U-shaped add-on frame has, on the outer side, a device for accommodating an additional outer glazing (14) such that, after the window frame profiles (10, 11) have been assembled to form a complete frame, a cavity is formed between an interior-side glazing (30) and an outer glazing (14), which cavity serves to accommodate a sun protection element (13), and such that the cavity communicates with the ambient air in contact with an add-on pane. The U-shaped, channel-shaped add-on frame (12) has rail-like projections on the inner cheeks of the U-shaped contour, which projections serve to support a sun protection head rail. A sun protection head rail (19) can be inserted into the U-shaped add-on frame (12) without requiring the removal of the outer pane; it is sufficient to remove an interior corner or an add-on frame profile.

Description

[0001] Sun protection in a window frame behind a cover pane

[0002] The invention relates to window frame profiles made of plastic, metal or wood for accommodating a sun protection device in a front frame part behind a front pane.

[0003] It is common practice to manufacture insulating glazing with blinds installed between the panes. The disadvantage of this solution is that the insulating glass pane has a hermetic edge seal, which makes it impossible to access the blinds in the event of necessary repairs. In the event of repairs, the panes must be completely removed and replaced with new panes and new blinds. Insurance companies refuse product liability for blinds that are inaccessible, a knockout criterion for insulating glass blinds.

[0004] It is also known to manufacture composite windows, in which a small hinged sash frame is placed in front of the actual window sash frame. This creates a cavity between the insulating glazing and a pane of glass in front, providing space for installing a blind. The advantage of composite windows is easy accessibility in the event of repairs, as the attached sash frame can be opened using the hinges. The disadvantages of these composite windows are the increased costs of constructing the hinged sash frames, as well as the depth and structural stability of the sash frames due to the additional sash frames.

[0005] A further disadvantage lies in the building physics. The outer, projecting sash frame hits the window frame. The sealing layer against driving rain and wind is achieved when the projecting sash also hits a window frame seal from the inside. Since the cavity between the sash and the insulating glass pane forms a breathable air cushion that pushes air out of the cavity when the temperature rises and draws air in when the temperature drops, warmer air and moisture are inevitably drawn in and accumulate in the cavity between the sash frame stops in the window frame. In winter, this air cushion contains more moisture than the cold outside air due to the higher temperatures. This moisture can then condense on the inside of the outer pane when the temperature in the cavity drops and air is drawn in via the air cushion.

[0006] CONFIRMATION COPY In this respect, DE10 2017 207937.1 A1 and WO 2016 / 091258 A1 have already proposed placing an outer glazing in front of only the insulating glass pane of a window sash, whereby the resulting cavity, which accommodates the blind, communicates only with outside air. However, this attachment to the glass reduces the light entry opening through the frame portions of the attachment pane. It is also necessary to remove the outer glazing in order to service the blind.

[0007] OS 2618803 and French application F No. 75 36903 show a frame with a cover panel, with a blind built into the cavity. The disadvantage of this variant is that the entire cover panel, including the heavy cover panel, must be removed in order to service the blind. Product liability insurance was also denied for such structures, which may require external scaffolding. The same applies to CN 111 395 934 A.

[0008] DE 197 51 255 A1 features a blind mounted in front of the window sash and an additional outer pane. The disadvantage of this design is that the outer pane is firmly bonded to the attachment structure. To service the blind, the pane and the entire assembly must be removed from the sash. A further disadvantage is that the attachment structure of the sash is recessed into the window frame, and ventilation of the cavity between panes 6 and 44 occurs via the window rebate space through a joint 34. This poses the risk of moisture ingress from warmer indoor air and thus the risk of moisture condensation on the outer pane.

[0009] The outer cover pane is often made of laminated safety glass with a thickness of more than 10 mm. The goal is to be able to service the blinds without having to remove this heavy cover pane. The challenge, therefore, is to develop a design that allows easier access to the blinds without removing the cover pane or opening the cavity via a separate hinged panel.

[0010] The invention further aims to create a window with integrated sun protection, for example, by placing a cover pane or a tension film with the function of an impact screen in front of a sash frame, without excessively reducing the light entry opening of the glass portion of the window due to the sun protection, as is the case with the prior art in DE 10 2017 207937.1 A1. Furthermore, the cavity should only breathe with outside air and not via the rebate space, for example, to reduce the risk of condensation on the inside of the outer pane. Preventing condensation in the visible surface of a window is a necessary task of innovation.

[0011] The solution to the core function of the window frame profile is achieved in accordance with the characterizing part of the main claim. The innovative idea consists in being able to remove the head rail of a curtain, e.g., in the form of a Venetian blind or roller blind, or the Venetian blind 13 or a roller blind, from the cavity between the window and the cover pane 14 without having to open a separate window sash or remove the cover pane. The innovation ensures the maintenance of the blind or roller blind, a prerequisite for insurance companies to cover product liability for sun protection.

[0012] The core idea of ​​the innovation is to create a U-shaped front frame that is either part of the window frame profile or is formed by a second separate front frame as an attachment to a window frame profile. This frame accommodates the blind lifting and turning mechanism and motors, or even a roller blind or pleated blind, and also guides the blinds in the U-shaped front frame contour. This guide is necessary as an alternative to the tension cable guide, which would require the front pane to be removed when removing the blinds for maintenance purposes, as the tension cables are also attached at the bottom. Especially with windows with opening and / or tilting window sashes, it is necessary to hold the blind slats in position to prevent them from hitting the panes. This is ensured by the guide in the U-shaped front frame, without the need for tension cables.

[0013] The innovative front frame allows for maintenance by either opening the front frame sideways to lift the blinds out of the cavity from the front, or by lifting the blinds upwards with the upper front frame profile. The side opening is achieved by removing an entire frame section at two corners, or by opening just one corner near the blind to allow the blind to be pulled out of the cavity from the side.

[0014] Another key feature of the invention is that the blinds and slat guides are not visible from the inside, and that the window's glass opening is not narrowed or reduced by a blind head rail. This is ensured by integrating the blinds into the glass attachment frame and protruding congruently from the window frame / sash frame or a post-and-beam construction—thus being invisible from the inside. However, the attachment frame is not limited to mounting on a window sash frame. It can also be mounted on the frame of a fixed glazing unit or on a pane of a post-and-beam facade.

[0015] The front frame in Fig. 3, for example, consists of a surrounding profile frame, whereby the blind head rail can be part of the front frame. Lateral frame profile components and the lower frame profile component of a front frame are firmly screwed and / or glued to the sash, preferably on the outside of a window, or are also firmly connected to the window frame profile. The term "front frame" should therefore not be understood restrictively as a separate frame placed in front of the window profiles. The front frame can also be an integral part of the sash frame.

[0016] The special feature is that, at least in the case of a separate construction placed in front of the glass frame, the upper attachment frame profile, which also serves as the head profile of the blind or accommodates the head profile of the sun protection, can be removed upwards out of the cavity. The upper attachment frame profile, as part of the attachment frame, is easily detachably connected to the sash frame. This means that the blind is accessible at all times. This task is achieved with at least essential parts of the attachment frame and the blind head rail being similar or identical in their profile contours. The key profile contour part is the U-shaped section open towards the inside of the frame to accommodate the blind / roller blind technology and the attachment pane or the frame profile for the mechanical mounting of the impact pane.

[0017] The innovation also relates in particular to a front frame construction in Fig. 1 and 4 to 7, into which a blind head rail 19 is inserted from one end into the upper front frame profile 12. This only requires that a lateral part of the front frame, e.g., in Fig. 4, is removed and the cavity is opened in order to pull the blind head rail, on which the slat package hangs, out of the U-shaped front frame profile 12.

[0018] It is particularly advantageous, as shown in Fig. 9, to combine the external cover frame with the window profile contour of the primary glass frame in a single extrusion or pressing process - i.e. as an integral part of the window or sash frame. The complete frame is then welded at the corners as usual or connected via corner connectors, with one corner in the area of ​​the blind head rail being installed as a separate, easily removable fitting element in the protruding, U-shaped contour. In the event of blind maintenance, only one corner is removed, and the sun protection can be pulled out of the upper profile at the front. The term "cover glazing" is a synonym for an external or impact pane and also refers to a laminated glass pane or an insulating glass composite or even a tension film that takes on the function of an impact pane and is installed in the cover frame.A stretch film also serves as protection against wind and rain. Due to its weight, this type of film is particularly suitable for refurbishing existing windows. It is particularly advantageous to manufacture the cover pane from a composite material whose core consists, for example, of a PMMA or PC layer laminated on one or both sides with a thin pane of glass. This structure is shown in Fig. 8. The cover frame or cover pane is placed on the outside or inside of a window.

[0019] The outer impact panel 14 is either inserted into a groove in the cover frame profile 12 or mechanically held from the outside by an additional frame profile 17, 51. The frame profile 51 can, for example, also be attached to the sash from the front and screwed from the side (Fig. 1) or, as shown in Figures 5 and 6, simply attached to the cover frame from the side and additionally screwed. The cover panel 14 rests via seals, in particular, on the outer frame profile part 17, 51. What is innovative is not only the blind, but also the cover panel 14, which can be lifted out to the side in the event of glass breakage, without having to completely dismantle the cover frame.

[0020] The innovative method of screwing the frame profile 17, 51 from the side is advantageous, so that the screw head disappears into a groove 30 and is not visible from the view. Another advantage is burglar protection, as the screws are only accessible when the window is open, as long as the window is located in the window reveal, which prevents side access.

[0021] The 30-gauge channel actually primarily serves the aesthetics of the facing frame in the facade / window view. However, it also offers the option of concealed screwing of the frame profile and the water drainage in the 30-gauge channel. The screwing is not intended to be visible in the window view. The cover profile is intended to provide a smooth, visually clean appearance. The channel appears as a groove, which lends the facing frame a design lightness and makes the screwing not only difficult to access but also invisible from the front view.

[0022] Preferably, the lower, horizontal frame profile section of the front frame communicates with outside air via openings for air exchange. The advantage of the innovation shown in Fig. 1 is that - in contrast to a composite window - only outside air can be drawn in, which is drier than warm interior air, especially in winter. The entire front frame protrudes outwards from the window frame into which the sash opens, without being able to communicate with interior air or the window rebate space. This largely prevents the risk of condensation forming in the cavity. In addition, a desiccant 21 as well as sieves or filters to prevent the ingress of dust and dirt can be inserted into the frame.

[0023] The insurance and practical advantage of this innovation is that the window sash blind can be accessed during repairs without scaffolding and by opening the window from the interior, without removing the impact plate 14 from the front frame. The cavity is always opened on the window handle side.

[0024] The figures show further details.

[0025] Fig. 1 , 2 show the cross-section through a plastic window sash frame with innovative front frame with impact pane and blind.

[0026] Fig. 3 shows an isometric view of a front frame corner with the blind head rail raised upwards

[0027] Fig. 4 shows the isometry of a window sash corner with a laterally removable blind

[0028] Fig. 5 shows the horizontal section through a front frame profile with impact screen and blind.

[0029] Fig. 6 shows the vertical section through a front frame with impact disc and a blind head rail inserted into the front frame.

[0030] Fig. 7 shows a detailed section through a window sash from Fig. 1 and 2 with front frame.

[0031] Fig. 8 shows the internal arrangement of a front frame on a pane of glass that is placed in front of the window.

[0032] Fig. 9 shows an example of a plastic window sash, where the U-shaped profile contour on the outside of the sash frame profile is an integral part of the profile contour.

[0033] Fig. 1 and 2 show a vertical section through a sash frame 10, for example made of plastic. This is located in a window frame 11. The blind 13 and an outer or impact pane 14 are installed in the front frame 12. The front frame is used either to recess a blind head rail 19 or the blind mechanism is built directly into the front frame, so that it also serves as the blind head profile. Fig. 3 shows the upper front frame section from Fig. 1. If the sun protection requires repair, the upper front frame profile 12 of the front frame with the sun protection 13 can be lifted upwards out of the cavity. The innovation provides for the head rail of the blind to be part of the front frame, or the blind head rail also to serve as the front frame profile. In the event of a repair, the heavy outer pane 14 remains firmly connected to the sash frame 10 with the lower and side front frame profiles 12.The outer pane 14 is held in the glazing bead by a laterally inserted glazing bead 17. The glazing bead is firmly connected to the sash 10 by means of a sealing strip, either screwed or glued. The seal is preferably a foam strip for thermal insulation. The glazing bead profiles 12 have openings in the lower or side frame sections through which outside air 20 can flow into or out of the cavity in the event of positive or negative pressure. Filters and, if necessary, desiccants 21 are inserted into the glazing bead profiles 12 in the area of ​​the openings.

[0034] Fig. 4 shows an exploded view of a U-shaped front frame 12 into which a head rail 19 of a Venetian blind is inserted, along with all of its components such as motors, shaft, and winding mechanism. The advantage is that the front frame can be opened from the side, allowing the blind to be removed from the cavity from the interior when the window is open. It is important that the front frame 12 is firmly connected to the sash 10 on only three sides, and that a frame profile 12 or at least one frame corner can be removed from above or, as in Fig. 4, to the side. The rigidity and precise fit of the front frame is ensured, as usual, by corner brackets 15.

[0035] It is also possible, as shown in Fig. 9, to design the front frame 12 as a fixed part of a window frame profile holding the insulating glass and to only detach one corner 60 in order to remove, for example, a gathered blind.

[0036] Fig. 5 shows a horizontal section, Fig. 6 again the vertical section through an attachment frame profile 12, into which a blind head rail profile 19 is inserted from the side. The blind slats 13 are guided laterally in the attachment frame profile 12, as can be seen in Fig. 5. The glazing bead 17 of the outer pane 14 is attached from the side to a short web with a U-shaped groove, as can be seen in Figure 5. The attachment frame can be equipped in a known manner with a groove or hollow chambers for the installation of corner brackets 9 as an assembly aid and for stiffening the frame. Fig. 7 shows an enlarged partial section of the window sash 10 from Fig. 1. The attachment frame profile 12 has a wavy surface 52 on the contact surface with the sash frame profile. This serves to ensure only selective contact with the window in order to reduce heat transfer.In a partial area of ​​the contact surface, a gap is created in which an adhesive film 53 can spread.

[0037] To mechanically secure the front frame against wind suction, it is extended with a protruding lip 54 below the window frame seal 55. This also serves as burglar protection, as the frame cannot be removed when the window is closed. Also visible is the corner bracket 9, which stiffens the frame. From the side, the cover or pressure profile 51 is screwed into the channel 30 (52).

[0038] The cover rails 17, 51 or the outer face of the blind or face frame, or even the outer pane 14, can be covered with photovoltaic cells to provide the power for raising and lowering the blinds. For this purpose, the face frame also provides space, preferably in the lower horizontal U-shaped face frame profile, for installing batteries that supply power to the blinds.

[0039] From the point of view of avoiding condensation on the side of the outer pane 14 facing the cavity, it is proposed in Fig. 8 to manufacture this as a composite of plastic and glass, wherein the impact pane has, for example, a core 43 made of PC or PMMA, for example, which is coated on both sides with a thin glass 44, 45. Fig. 8 shows the thermal radiation 42 of the pane 47 of the insulating glazing 46 oriented towards the cavity. The thermal radiation is absorbed by the thin glass 44 or a plastic surface. The plastic or plastic core 43 has a thermal insulation effect, so that a temperature gradient Δt forms in the impact pane between the two surfaces 44, 45, between the inside and outside. The outward-facing surface 45 is cooler, while the surface 44 facing inwards towards the cavity is somewhat warmer, thus preventing the formation of condensation on the pane.If condensate forms in the cavity, the condensate then condenses according to the invention on the inside of the cold aluminum profiles, which take on the outside temperature without the view through the baffle plate 14 being obstructed as a result of condensation.

[0040] The front frame is manufactured either as an extruded profile made of aluminum, PVC, or glass-fiber reinforced plastic. The innovation in Fig. 9 also includes the solution of extruding the front frame as a fixed component, e.g. of a window sash frame profile or a profile for fixed glazing, or pressing it in the case of a metal construction. Fig. 9 shows, partly shown in dashed lines, a frame corner 60, which is designed, for example, as an injection-molded part in the contour of the front frame and is inserted into the profile 12 via a tab 61. Only the cover strip 51, which serves to hold the glass pane, is removed on one side in order to remove the frame corner 60 and to be able to pull the blind head profile 19 out of the U-shaped front frame. This construction method is very advantageous. First, the complete, closed frame is manufactured and the corners are thermally welded, as is usual with PVC windows.An upper corner is milled out in a second step so that a fitting piece 60 can be installed in the corner in the contour of the front frame. The cover frame 51, which is subsequently attached, covers the installed frame corner.

Claims

Patent claims Claim 1 Window frame profiles for the production of window and window sash frames (10, 11) made of plastic, metal or wood, consisting of at least one glass bed for receiving a single or multi-pane glazing (30), characterized in that The window profiles which can be assembled to form a frame can be pre-mounted with a cover pane by means of a U-shaped cover frame as an attachment or as a component of the window frame profiles (12) and that the U-shaped cover frame has a device towards the outside in order to accommodate an additional external glazing (14), so that - after assembly of the window frame profiles (10, 11) to form a complete frame, a cavity is formed between an interior glazing (30) and an exterior glazing (14), which cavity serves to accommodate a sun protection device (13), wherein - the cavity communicates with the ambient air adjacent to a cover plate and that - the U-shaped front frame (12) has rail-shaped contours on the inside cheeks, which serve to fit and support a sun protection head rail, so that - a sun protection head rail (19) can be inserted into the U-shaped front frame (12) from the side, so that - a sunshade can be installed or removed between the inner glazing (30) and the outer glazing (14) without removing the outer pane by opening the cavity at at least one corner of the frame or by removing a front frame profile. Claim 2 Window frame profiles according to claim 1, characterized in that a sun protection in the manner of Venetian blind slats (13) or a roller blind or a pleated curtain engages on both sides in the vertical U-shaped front frame contour and is guided laterally in this. Claim 3 Window frame profiles according to claim 1, characterized in that the four-sided front frame profiles (12) are formed from a U-shaped roller blind or Venetian blind head rail profile (19) or a Venetian blind head rail is installed in an upper U-shaped front frame profile, wherein the sun protection can be lifted out of the cavity upwards together with an upper, horizontal front frame profile (12) by loosening the upper front frame corner connections. Claim 4 Window frame profiles according to claim 1, characterized in that a sun protection head rail (19) with the lifting mechanism can be pushed into the upper U-shaped front frame profile (12) from one side into the upper front frame profile and that the sun protection curtain (13) can be removed from the side from the U-shaped front frame by removing at least one front frame corner connection or a vertical front frame profile (12) or profile fitting piece (60) so that a sun protection head rail (19) can be removed from the front side from the upper front frame profile (12). Claim 5 Window frame profiles according to claim 1, characterized in that the front frame profiles (12) and / or the frame profiles (17, 51) form a circumferential U-shaped groove (30) concealed in the window view and that the screw connection of a frame profile (51) to the front frame profile takes place in the U-shaped groove, so that the screw connection is not visible in the front frame view. Claim 6 Window frame profiles according to claim 1, characterized in that the outer glazing (14) is set at the edge between the front frame and a frame profile (17, 30) so that the frame profile (17, 20) mechanically secures the front glazing (14). Claim 7 Window frame profiles according to claim 1, characterized in that at least parts of the lower horizontal frame (17, 51) of the front frame are covered on the outside with photovoltaic cells. Claim 8 Window frame profiles according to claim 1, characterized in that the front glazing (14) is made of plastic or a composite of plastic and glass, so that between the surface (44) of the front glazing (14) oriented towards the interior and the surface (45) of the front glazing oriented towards the exterior, a temperature gradient At towards the outside results, so that the surface (44) of the front glazing (14) is warmer towards the cavity and incoming moisture does not condense on the front glazing. Claim 9 Window frame profiles (10, 11) according to claim 1, characterized in that the front frame profiles (12) have a narrow lip (54) in cross section, which sits in a gap under the window frame seal (55), so that a mounted front frame is mechanically secured against wind suction. Claim 10 Window frame profiles according to claim 1, characterized in that one frame corner of an attachment frame (12) is designed as a buildable fitting piece (60) which has an extension (61) on one side which can be inserted with an exact fit into the profile contour (61) of the channel-shaped attachment frame (12).

Images