Corner element for a mounting frame

Abstract

The invention relates to a corner element (1) for a mounting frame (9) for the installation of windows (8), French doors and doors in building openings, comprising a first section (11), which has an at least approximately planar base plane (111), and a second section (12), which is integrally formed thereon so as to be angled at a right angle and which has an at least approximately planar vertical plane (121) which is oriented at least approximately at a right angle to the base plane (111) of the first section, and comprising a support strip (13), which is integrally formed on the first section (11) on the side opposite the base plane (111) and on which a window frame (81) can be supported. According to the invention, the second section (12) projects beyond the support strip (13) by a height difference (h), wherein the height difference (h) relates to the difference between the maximum heights of the second section (12) and the support strip (13) with respect to the base plane (111) of the first section (11).

Description

[0001] ii. February 2026 SILU Verwaltung AG S178467WO

[0002] Corner element for a mounting frame

[0003] The present invention relates to a corner element for a mounting frame for windows and doors, which serves to improve the installation of windows, French doors or doors in building openings.

[0004] To reduce the energy consumption of buildings, they must, among other things, be airtight. In particular, joints, transitions, and gaps between different building components, such as windows and doors, must be properly sealed, as otherwise massive energy losses are likely due to incoming or outgoing air currents.

[0005] In practice, building openings intended for windows or doors have uneven and irregular surfaces, which makes sealing difficult. Furthermore, window and door frames are made of materials different from those used in structural building elements, which, due to differing adhesion properties of sealing materials, also complicates sealing.

[0006] Sealing a window or door installed in a building opening must be done manually due to quality requirements, which is very time-consuming and therefore expensive. The tradesperson has to perform several steps using different sealing materials. There is always a risk of errors during individual steps, leaving leaks, such as so-called "work gaps."

[0007] Various mounting frames for windows and doors are known from the prior art. Mounting frames are installed in masonry openings during an early construction phase, allowing the wet and dirty construction phase to be completed before installing windows or doors that are sensitive to dirt. DE 202019104453 Ui discloses an end profile for a mounting frame, wherein the end profile is arranged laterally and / or below a windowsill at the lower edge of the mounting frame. The window is placed on the end profile for installation and must be held in position manually, which is particularly difficult with large and correspondingly heavy windows. After positioning, the window or door must be manually sealed all around. Furthermore, water can spread along the contact surfaces.

[0008] Components are subject to high demands regarding their temperature resistance, weather resistance, durability and sealing.

[0009] The present invention is therefore based on the objective of creating a device with which a building opening for a window, a French door or a door can be quickly sealed to be windproof and rainproof.

[0010] Furthermore, the device should be durable and allow for the quick installation of windows, French doors and doors.

[0011] Furthermore, the device should represent a marketable and competitive development.

[0012] In particular, the device should be easy to manufacture.

[0013] Furthermore, the device should be suitable for use in the construction sector.

[0014] Furthermore, the device should be largely free of solvents and, in particular, free of harmful substances.

[0015] The device should continue to take into account the latest developments and requirements in the construction sector.

[0016] This problem is solved by a corner element for a mounting frame, or by the use of a corner element, or by a set for a mounting frame, which has the features specified in claim 1, claim 12, or claim 13, respectively. Advantageous embodiments of the invention are specified in further claims.

[0017] The corner element for a mounting frame for installing windows, French doors, and doors in building openings comprises a first section having an at least approximately planar base plane, and a second section formed at a right angle to it. The second section has an at least approximately planar vertical plane oriented at least approximately perpendicular to the base plane of the first section and a support strip formed on the side of the first section opposite the base plane, on which a window frame can be supported. According to the invention, the second section projects beyond the support strip by a height difference. This height difference refers to the difference between the maximum heights of the second section and the support strip with respect to the base plane of the first section.

[0018] The corner element is suitable for installing windows, French doors and doors in building openings.

[0019] The corner element allows for easy installation of a window with a frame. In particular, the window can be installed easily and with reduced effort, ensuring it is windproof and watertight. The corner element serves as a uniform and large, flat mounting platform for the window. This results in more consistent gaps and interfaces between components compared to installation directly on the building structure, simplifying the sealing process. Furthermore, it eliminates the need for access holes.

[0020] Preferably, the height difference is at least 1 cm, preferably at least 2 cm, and more preferably at least 5 cm. Water cannot penetrate from the exterior to the interior of the structure over the support strip.

[0021] The corner element is specifically formed in one piece. This means that the corner element is not assembled from two or more parts. The one-piece construction avoids interfaces where water could spread. The first section is aligned approximately at right angles to the second section. In this context, this alignment is also referred to as an L-shaped configuration. The term "L-shaped" means that the shape of a capital letter "L" is recognizable in a component. According to the invention, the length of the two elements, or their ratio to each other, is arbitrary. The two elements can have the same or different lengths. Even a planar element with an overhang at one edge is considered "L-shaped" in this context.

[0022] The support strip preferably has an at least approximately rectangular cross-section. This makes the corner element easy to manufacture. The support strip particularly preferably has a groove for receiving a window sill connection profile and / or a sealant and / or a sealing compound.

[0023] In a preferred embodiment, the support strip extends over the entire length of the first section and is directly molded onto the second section.

[0024] The corner element preferably has integrated fasteners for connecting it to other elements of a mounting frame. In further preferred embodiments according to the invention, the corner element has fastener receptacles for receiving fasteners.

[0025] Fasteners are known from the prior art, including form-fit or force-fit fasteners such as keys, fitted screws, pins, bolts, rivets, press fits, friction fits, clamping connections, screw connections, or connecting rods. Material-fit fasteners such as adhesives, particularly double-sided adhesive elements, are also suitable. The fasteners can be integrally formed or detachably connected to the respective elements. Rod-shaped fasteners are particularly preferred. These rod-shaped fasteners are preferably pressable into groove-shaped recesses, with a portion of the rod-shaped fastener projecting towards the mating part and being pressable into a corresponding groove-shaped recess on the mating part. The fasteners are preferably easily adaptable to the specific application at the installation site, for example, by cutting them to size.In a preferred embodiment, a stop strip for a window frame is molded onto the corner element. This allows the window to be easily installed by an installer against a stop, reducing installation time.

[0026] The stop strip is preferably integrally formed on the second section and aligned at least approximately perpendicular to the support strip. Particularly preferably, the stop strip is designed with steps and comprises at least one sealing material section and one stop section.

[0027] Preferably, the stop strip and the support strip are spaced apart from each other. This prevents water from rising by capillary action along surfaces that are almost touching. Preferably, the stop strip has a recess. The recess improves the drainage of water droplets.

[0028] In a particularly preferred embodiment, the first section of the corner element has an inclined surface on the side opposite the base plane. More preferably, the inclination is at least 5°. 0 opposite the horizontal. This ensures the drainage of water, especially rainwater.

[0029] In a preferred embodiment, the corner element is pre-assembled with sealants and / or sealing compounds and / or adhesive tapes for sealing. The pre-assembled sealants are preferably applied to the sealing section of the stop strip so that they act and seal between the hinged window frame and the mounting jamb. Preferably, a pre-perforated tube containing a sealant is arranged in the groove in the support strip. When pressure is applied by the supported window, the tube bursts, allowing the sealant to act between the window frame and the corner element and seal the interface.

[0030] The corner element is made of materials commonly used in the construction industry. Preferably, the corner element is made primarily or entirely of a lightweight material, preferably a plastic material, more preferably a thermosetting or thermoplastic plastic material, particularly preferably polystyrene, polyester, polyvinyl chloride, or mixtures thereof, especially polystyrene. The materials used are preferably recyclable, fire-resistant, water-resistant, waterproof, and mechanically stable. The materials used preferably have a low CO2 footprint; more preferably, the materials are CO2-neutral. The materials are preferably screw-resistant. Screws can be inserted into the materials, particularly preferably, without the need for pre-drilling or threading.

[0031] The corner element is preferably designed to be watertight, so that no water can diffuse through the corner element or move along manufacturing surfaces on the corner element by capillary action.

[0032] In a particularly preferred embodiment, the corner element has a bore through which a sealant can be injected into the area between the corner element and the building structure. Preferably, the bore has a mark indicating the level to which backflowing sealant must be injected to ensure that sufficient sealant has been injected into the interface between the corner element and the building structure to guarantee a proper seal.

[0033] The corner element is preferably designed to be load-bearing. This means that it can absorb the load of the window resting on it and transfer it to other parts of the building without sustaining damage.

[0034] The corner element is preferably designed to achieve good sound insulation for residential and commercial buildings. Furthermore, the materials for the corner element are selected to ensure optimal insulation and thermal performance. The corner element is preferably fire-resistant and / or fire-retardant. The corner element preferably achieves at least fire protection class E (according to EN 13501-1), more preferably at least fire protection class D (according to EN 13501-1), and most preferably at least fire protection class C (according to EN 13501-1).

[0035] The corner element preferably has a reduced ecological footprint during production. Valuable materials are reused and do not need to be disposed of. If necessary, for example during dismantling, the corner element can be removed from the component and recycled. The assembly frame built with a corner element is therefore suitable for the circular economy.

[0036] The corner element is preferably free of harmful substances, in particular free of harmful substances according to Emicode®. Ideally, the corner element achieves class EC1+ according to Emicode®. Therefore, the corner element poses no health risk, even if used as a building component in residential areas for many years.

[0037] The production of a corner element according to the invention is preferably carried out by methods known from the prior art, such as extrusion, injection molding, cutting or milling from a solid, 3D printing or CNC-based techniques. The corner piece is particularly well manufactured in one piece.

[0038] Preferably, the corner element is manufactured on a construction site using 3D printing based on an at least partially automated process. Building openings are preferably measured automatically, for example, by a laser-based scanning system. The measurement data is then processed, preferably by a central processing unit and / or an AI-supported computer program, into corner elements that fit the dimensions of the respective building openings and are subsequently 3D printed. This optimizes the accuracy of the fit of the corner elements within the building openings.

[0039] A corner element according to the invention can be used to construct a mounting frame for windows or doors. For this purpose, further elements are connected to the corner element or to each other via connecting means in order to form a frame-shaped mounting frame.

[0040] A set for a mounting frame comprising a first corner element and a second corner element according to the invention is also part of this invention. The first corner element and the second corner element are designed to be at least approximately mirror-symmetrical to each other. The use of a corner element according to the invention for use in the construction sector is also part of this invention. In particular, the use of a corner element according to the invention for installing windows, French doors, and doors, and for sealing window openings, is part of this invention.

[0041] The invention is explained in more detail below with reference to the drawings. These show:

[0042] Fig. a1 a first corner element according to the invention;

[0043] Fig. ib shows the corner element 1 from Fig. 1a in a further view;

[0044] Fig. 2a shows the corner element i from Fig. 1a in side view;

[0045] Fig. 2b shows a second embodiment of a corner element i according to the invention;

[0046] Fig. 3 shows a mounting frame 9 with a window 8 inserted therein and two corner elements 1, 1' according to the invention;

[0047] The figures are not drawn to scale.

[0048] Fig. 1a shows a corner element 1 in a first embodiment according to the invention. The basic structure of the corner element 1 is formed by a first section 11 and a second section 12 arranged perpendicularly thereto. The surface of the first section 11 facing the outside of the building when installed is inclined to allow water to run off. Connecting element receptacles 18 are formed on the first section 11 and the second section 12. Connecting elements such as rods or pins can be inserted into these connecting element receptacles 18 in a force-fit or form-fit manner, so that the corner element 1 can be connected to other elements of a mounting frame. A support strip 13 is formed on the first section 11. A groove 131 is formed in the support strip 13. A window or door frame can be supported on the support strip 13.A sealant or caulking compound can be applied to the groove 131 before the window or door is installed to ensure a tight seal at the transition from the frame to the support strip or to the corner element 1. The support strip 13 is preferably designed so that it does not project beyond the second section 12, thus maintaining the basic L-shape of the corner element 1. A stop strip 14 is formed on the second section 12. A window or door frame can be abutted against the stop strip 14. The stop strip 14 has a recess 16 in the area adjacent to the support strip 13 and the first section. The recess 16 allows water spreading across interfaces to drain more easily towards the surface 112 on the first section 11, which slopes towards the outside of the building. A circumferential connection groove 17 is formed in the end face of the first section 11 and the second section 12.Additional parts such as extension elements, strips or window sill covers, plaster facades can be connected to the corner element via the connection groove 17.

[0049] Fig. ib shows the corner element 1 from Fig. 1a in a further view. The end face of the stop strip 14 is designed in two stages with a sealing material section 141 and a stop section 142. A sealant or sealant compound can be applied to the sealing material section 141 so that the transition from the frame to the stop strip or to the corner element 1 is watertight. A fastener 19 is inserted into the fastener receptacle 18. The fastener 19 projects partially out of the fastener receptacle 18 so that it can be inserted into a groove, a bore, or an analogous receiving device on another element, thus creating a mechanical connection between the corner element 1 and the other element.

[0050] Fig. 2a shows the corner element 1 from Fig. 1a in a side view with the elements known from Fig. 1a. The second section projects beyond the support strip 13 by the height difference h. The height difference h refers to the difference between the maximum heights of the second section 12 and the support strip 13 with respect to the base plane 111 of the first section 11.

[0051] Fig. 2b shows a second embodiment of a corner element 1 according to the invention. The connecting means 19 are designed as integrally formed pins. The pins are oriented almost perpendicular to the respective plane of the first section 11 and the second section 12, respectively. The remaining elements of the corner element 1 are designed analogously to the first embodiment of the corner element 1 according to the invention shown in Fig. 10.

[0052] Fig. 3 shows a mounting frame 9 with a window 8 inserted therein and two corner elements 1, 1' according to the invention. The mounting frame 9 is formed by the two corner elements 1, 1', an intermediate piece 3, two upper corner elements 6A, 6B, two side pieces 4A, 4B, and an upper intermediate piece 5. The adjacent elements are flush and co-planar to each other and are connected by connecting means. A support strip 13 is integrally formed on each of the corner elements 1, 1'. The support strips 13, together with the support section 33 integrally formed on the intermediate piece 3, form a continuous strip for supporting a window or door frame. A stop strip 14, 64 is integrally formed on each of the first corner element 1 and the upper corner element 6A. The stop strips 14, 64 together with the stop section 44 molded onto the side piece 4A form a continuous strip for stopping a window or door frame during installation.In a preferred embodiment, the stop rail extends continuously along the entire upper module and the two corner elements 1, 1'. The frame 81 of the window 8 is supported vertically on the rail formed by the support rail 13 and the support section 33. In the horizontal direction, the frame 81 is hinged against the rail formed by the stop rails 14, 64 and the stop section 44. The base plane 111 represents the lower boundary of the mounting frame 9. The vertical plane 121 represents the lateral boundary of the mounting frame 9.

[0053] Also according to the invention is any combination of the embodiments of the corner element described in the figures and the description. In particular, individual features of the described embodiments can be combined with one another according to the invention. The corner element according to the invention is suitable not only for construction purposes but also for other areas of application. List of reference symbols

[0054] 1 corner element

[0055] 1' second corner element

[0056] 11 first section

[0057] 111 Base level

[0058] 112 inclined surface

[0059] 12 second section

[0060] 121 Vertical plane

[0061] 13 Support strip

[0062] 131 Nut

[0063] 14 Stop bar

[0064] 141 Sealing material section 142 Stop section

[0065] 16 recess

[0066] 17 Connection slot

[0067] 18 Fastener uptake 19 Fasteners

[0068] 3 Intermediate pieces

[0069] 33 Support section

[0070] 4A, 4B side piece

[0071] 44 Stop section

[0072] 5 upper intermediate piece

[0073] 6A, 6B upper corner elements

[0074] 64 Stop bar

[0075] 8 windows

[0076] 81 window frames

[0077] 9 Mounting frame

[0078] h altitude difference

Claims

ii. February 2026 SILU Verwaltung AG S178467WO Patent claims 1. Corner element (1) for a mounting frame (9) for the installation of windows (8), French doors and doors in building openings, comprising a first section (11) having an at least approximately planar base plane (111) and a second section (12) formed at a right angle to it, the second section having an at least approximately planar vertical plane (121) oriented at least approximately perpendicular to the base plane (111) of the first section, and a support strip (13) formed on the side opposite the base plane (111) of the first section (11), on which a window frame (81) can be supported, characterized in that the second section (12) projects beyond the support strip (13) by a height difference (h), wherein the height difference (h) corresponds to the difference between the maximum heights of the second section (12) and the support strip (13) with respect to the base plane (111) of the first section (11). refers to.

2. Corner element (1) according to claim 1, characterized in that the height difference (h) is at least icm, preferably at least 2cm, more preferably at least 5cm.

3. Corner element (1) according to claim 1 or 2, characterized in that the support strip (13) has an at least approximately rectangular cross-section and / or that the support strip (13) has a groove (131) for receiving a window sill connection profile and / or a sealant and / or a sealing agent.

4. Corner element (1) according to claim 1, 2 or 3, characterized in that the support strip (13) extends over the entire length of the first section (11) and is directly formed on the second section (12).

5. Corner element (1) according to one of claims 1-4, characterized in that connecting means (19) for connection with further elements of a mounting frame (9) are formed on the corner element (1) and / or that the corner element (1) has connecting means receptacles (18) for receiving connecting means (19).

6. Corner element (1) according to one of claims 1-5, characterized in that a stop strip (14) for stopping a window frame (81) is formed on the corner element (1).

7. Corner element (1) according to claim 6, characterized in that the stop strip (14) is integrally formed on the second part (12) and is aligned at least approximately perpendicular to the support strip (13) and / or that the stop strip (14) is designed in a stepped manner and comprises at least one sealing material section (141) and one stop section (142).

8. Corner element (1) according to one of claims 1-7, characterized in that the stop strip (14) and the support strip (13) are spaced apart from each other and / or that the stop strip (14) has a recess (16).

9. Corner element (1) according to claim 8, characterized in that the first section (11) has an inclined surface (112) on the side opposite the base plane (111).

10. Corner element (1) according to one of claims 1-9, characterized in that the corner element is made mainly or completely of a lightweight material, preferably a plastic material, more preferably of a thermosetting or thermoplastic plastic material, particularly preferably polystyrene, polyester, polyvinyl chloride or mixtures thereof.

11. Corner element (1) according to one of claims 1-10, characterized in that the corner element is mainly or completely made of a lightweight material, preferably a plastic material, more preferably of a thermosetting or thermoplastic plastic material, particularly preferably polystyrene.

12. Corner element (i) according to one of claims 1-11, characterized in that the corner element (i) is pre-assembled with sealants and / or sealing compounds and / or adhesive tapes for sealing.

13. Use of a corner element according to one of claims 1 to 12 for the installation of windows, French doors and doors in the construction sector.

14. Set for a mounting frame (9) with at least one first corner element (1) according to one of claims 1-12, and with a second corner element (1') according to one of claims 1-12, wherein the first corner element (1) and the second corner element (1') are designed to be at least approximately mirror-symmetric to each other.

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