EP4202168A1 - Window or door leaf and window or door comprising same - Google Patents

Abstract

The present invention relates to a window or door leaf (1) which (a) has a leaf frame (2) formed from sections of a window or door leaf profile (3), which has a rebate base (8) and an outer flap (6), (b) a glazing bead (10) anchored in a glazing bead groove (9) of the window or door leaf profile (3) which, together with the rebate base (8) and the outer flap (6), forms a rebate space (11) that is at least partially open on one side, wherein the glazing bead (10) comprises at least one glazing seal (15, 15'); and (c) insulating glazing (12) received in the rebate space (11) on the face side, which comprises at least two glass panes (13, 13'), the space between which is subjected to negative pressure and which has a glass edge (14) directed towards the rebate base (8) having; comprises, wherein the at least one glass seal (15, 15') rests at least in sections on the glass pane (13') facing it, wherein the window or door leaf (1) is characterized according to the invention in that in the cross section of the window or door leaf (1 ) the distance between the glass edge (14) and the point of the at least one glass seal (15') furthest away from the glass edge (14) is greater than the distance between the glass edge (14) and that of the glass edge (14) at furthest point of the external rollover (6). In addition, the present invention also relates to a window (100) or a door, which has a window frame (4) or a frame and such a window or door leaf (1) accommodated therein when the window (100) or the door is closed. includes.

Description

The present invention relates to a window or door sash which (a) a sash frame formed from sections of a window or door sash profile, which has a rebate base and an outer flap, (b) a glazing bead anchored in a glazing bead groove of the window or door sash profile, which together forms a rebate space that is at least partially open on one side with the rebate base and the outer flap, the glazing bead comprising at least one glazing seal; and (c) insulating glazing accommodated in the rebate space on the face side, which comprises at least two panes of glass, the space between which is subjected to negative pressure and which has a glass edge directed towards the base of the rebate, with the at least one glass seal resting at least in sections on the glass pane facing it. In addition, the present invention also relates to a window or a door, which comprises a window frame or a frame and such a window or door leaf accommodated therein.

Due to their outstanding thermal insulation properties, vacuum insulation glazing is being used to an increasing extent as surface elements in doors and windows. Such vacuum insulation glazing has Ug values below 1.0 W/(m2K), often even in the range of 0.4 W/(m2K) to 0.5 W/(m2K). However, the use of such vacuum insulating glazing in doors and windows entails the problem that there is a risk of condensation forming in this area due to the low surface temperature in the area of the transition from the vacuum insulating glazing to the glazing bead if there are large differences between the outside temperature and room temperature. This risk is associated with the risk of mold growth.

To solve this problem, the WO 2020/187977 A1 suggest arranging a thermal coupling element or heat conducting element with a high thermal conductivity compared to the material of the frame, spaced apart from the vacuum insulating glazing, on the room side in the area of the edge seal. As a result, thermal energy is fed to the edge seal from the warmer side of the room, so that the surface temperature in the area of the edge seal increases and the risk of condensation forming is reduced. The problem with the solution according to the WO 2020/187977 A1 it is seen that the heat conduction in the area of the edge bond through the thermal coupling element could not be sufficient, especially at low outside temperatures, to To largely prevent the risk of condensation forming in this area of the transition from the vacuum insulating glazing to the glazing bead.

This is where the present invention comes in, which is based on the object of making available a window or door leaf that overcomes the disadvantages of the prior art. In particular, the risk of condensation forming in the area of the transition from the vacuum insulating glazing to the glazing bead should be effectively reduced. Furthermore, the present invention lies in the provision of a window or a door comprising such a window or door leaf.

These and other objects are achieved by a window or door leaf with the features of claim 1 or by a window or door with the features of claim 11. Preferred embodiments of the present invention are given in the dependent claims.

According to the present invention, it was recognized that the formation of condensation in the area of the transition from the vacuum insulating glazing to the glazing bead is effectively prevented in that, viewed from the outside, at least the glass seal of the glazing bead that is furthest away from the rebate base in the cross section of the sash has the upper dimension of the outer overlap of the window - or door leaf profile surpasses. As a result, the isotherms that are important for the formation of condensation water in a temperature range of +10°C and +13°C do not run on the room-side surface of the vacuum insulating glazing, so that the risk of condensation water formation in this area is reduced.

Accordingly, the present invention lies in the provision of a window or door sash which (a) has a sash frame formed from sections of a window or door sash profile and has a rebate base and an outer flap, (b) one anchored in a glass strip groove of the window or door sash profile Glazing bead which, together with the rebate base and the outer flap, forms a rebate space that is at least partially open on one side, the glazing bead comprising at least one glazing seal; and (c) insulating glazing received in the rebate space on the front side, which comprises at least two glass panes, the space between which is subjected to negative pressure and which has a glass edge directed towards the rebate base, the at least one glass seal lying at least in sections on the glass pane facing it, wherein the window or door leaf is characterized according to the invention in that viewed in cross section of the window or door leaf, the distance between the glass edge and that of the Glass edge at the furthest point of the at least one glass seal is greater than the distance between the glass edge and the point of the outer flashover that is furthest away from the glass edge. In addition, the present invention also relates to a window or a door which comprises a window frame or a frame and a window or door leaf accommodated therein when the window or the door is closed.

As used herein, the terms "window or door sash" and "frame" preferably refer to a sash or frame of a plastic window or door. But there are also wooden windows or wooden doors, as well as composite windows and composite doors into consideration. If it is the casement of a plastic window or a plastic door, the main material of the casement profile of the window or door casement according to the invention is polyvinyl chloride (PVC), in particular hard PVC (PVC-U) or glass fiber reinforced PVC, to which additional additives such as B. stabilizers, plasticizers, pigments and the like are added, preferred. PVC can be dyed or dyed well and hardly absorbs any water.

With regard to the window or door leaf according to the invention, it can be helpful if the distance between the glass edge and the rebate base is at most 15 mm, preferably at most 10 mm, viewed in cross section of the window or door leaf. Alternatively, distances between the glass edge and the fold base of at most 14 mm, 13 mm, 12 mm, 11 mm, 9 mm, 8 mm, 7 mm, 6 mm, 5 mm, 4 mm, 3 mm, 2 mm or 1 mm are preferred . Such a small distance between the glass edge of the vacuum insulating glazing and the bottom of the rebate also makes a significant contribution to reducing the course of the isotherms that are important for the formation of condensation water in a temperature range of +10°C and +13°C from the room-side surface of the vacuum insulating glazing through the vacuum insulating glazing and to run through the sash profile as well as through the volume occupied by the window sash. This also reduces the risk of condensation and thus mold growth. The feature of the distance between the glass edge and the bottom of the rebate of at most 15 mm can also function as a characterizing feature of an independent claim, also independent of the feature of the relative height of the at least one glass seal of the glazing bead to the height of the external flap. Particularly preferably, the glass edge of the vacuum insulating glazing stands at least partially directly or at least over a glazing element on the rebate base. In this way, the deep glass depth has a maximum effect on the shift of the relevant isotherms.

In preferred embodiments of the present invention, a heat-conducting element is arranged between the glazing bead and the rebate base. Such a heat-conducting element transports thermal energy from the interior of the room to the surface of the vacuum insulating glazing and thus helps to prevent condensation from forming in this area. It is preferred that the heat conducting element reaches as close as possible to the vacuum insulating glazing. This ensures a particularly large amount of heat with which the vacuum insulation glazing can be heated in the area of the glazing bead. The distance between the heat conducting element and the vacuum insulating glazing is therefore preferably at most 2 mm, particularly preferably at most 1 mm and in particular at most 0.7 mm. In particularly preferred embodiments, the heat-conducting element rests against the insulating glazing at least in sections.

It may also be useful if the thermally conductive element comprises a material that has a thermal conductivity greater than 15 W/mK, preferably a thermal conductivity greater than 150 W/mK. A material with high conductivity promotes heat transfer to the sections on the surface of the vacuum insulating glazing that are relevant for the formation of condensation. For this purpose, the heat-conducting element comprises a metallic material at least in regions. For example, metals such as stainless steel with a thermal conductivity of approximately 15 W/mK, unalloyed steel with a thermal conductivity of approximately 50 W/mK, aluminum with a thermal conductivity of approximately 160 W/mK and copper with a thermal conductivity of approx. 400 W/mK can be used. In general, aluminum has proven to be particularly suitable as a conductive material for the heat-conducting element due to its high thermal conductivity and low environmental impact. By using aluminum, the area on the surface of the vacuum insulating glazing that is relevant for the formation of condensation can be linked to the room temperature in a particularly effective manner.

In preferred embodiments of the window or door leaf according to the invention, this connection to room temperature can be promoted by the fact that the distance between the heat-conducting element and the side of the glazing bead facing the rebate base is at most 2 mm, preferably at most 1.5 mm, particularly preferably at most 1 mm and in particular is at most 0.7 mm. In particularly preferred embodiments of the present invention, the heat-conducting element bears against the glazing bead at least in sections. Accordingly, the thermally conductive element can be, for example, an aluminum foil or an applied aluminum layer that faces the fold base Side of the glazing bead is arranged. Glazing beads made entirely of aluminum can also be used as heat-conducting elements.

It can also be useful if the heat conducting element extends over at least 85% of the distance between the insulating glazing and the glazing bead groove, preferably over at least 90% of the distance between the insulating glazing and the glazing bead groove, viewed in cross section of the window or door leaf. As a result of this measure, the isotherms of the temperature range of + 10°C and + 13°C, which are significant for the formation of condensation water, run in sections in the area of the glazing bead almost parallel to the direction of heat transfer and in this way run in the area enclosed by the vacuum insulating glazing and the sash profile as well as by the window sash Volume. This further reduces the risk of condensation forming.

It can also be helpful if the thermally conductive element comprises at least one support part, with which the thermal element rests on the bottom of the fold. The thermally conductive material can then be applied to the support part, or the support part can consist entirely of the thermally conductive material. In this way, the heat-conducting element can be easily introduced into the rebate area of the window or door leaf according to the invention. Such a support part can, for example, be a profile, in particular a plastic profile or a profile made of the thermally conductive material.

It can prove advantageous if the glass seal is made of a plastic material, in particular a soft plastic material. Thermoplastic elastomers based on PVC (polyvinyl chloride), in particular soft PVC, PP/EPDM (polypropylene/ethylene-propylene-diene rubber), EPDM, PREN and TPS (styrene block copolymers) and SBS (styrene-butadiene-styrene block copolymer) and blends of the plastic materials mentioned are particularly preferred. Such materials have sufficient long-term stability. As used herein, the term "soft plastic material" refers to plastic materials having a Shore Hardness (Shore A) in the range of 50 Shore A to 80 Shore A, with thermoplastic polymeric materials having a Shore Hardness (Shore A) in the range of 60 Shore A to 80 Shore A and especially in the range of 65 Shore A to 75 Shore A are preferred. A most preferred plastic material has a hardness of about 70 Shore A (ranging from 68 Shore A to 72 Shore A). The specified Shore hardness values refer to the standards DIN 53505:2000-08 and DIN 7868-1:1982-10. Here, thermoplastic elastomers, preferably with a Shore hardness in these ranges, proved to be particularly suitable.

The frame profiles, both for the sash frame and for the window frame or the frame, are preferably a hollow chamber profile comprising several hollow chambers, in particular a plastic hollow profile chamber profile comprising several hollow chambers or an aluminum hollow chamber profile comprising several hollow chambers, with plastic hollow profile chamber profiles being particularly preferred in each case . As an alternative to this, wooden profiles, aluminum-wood composite profiles, plastic-wood composite profiles and aluminum-plastic composite profiles can also be used.

The window or door leaf according to the invention, the blind frame, the frame and the window according to the invention or the door according to the invention are particularly preferably designed as corresponding plastic elements. The hollow chamber profiles used therein are then preferably made of polyvinyl chloride (PVC), in particular of hard PVC (PVC-U) or glass fiber reinforced PVC, which can each also contain post-chlorinated PVC (PVC-C). Such hollow chamber profiles can particularly preferably be produced in a manner known per se by extrusion or coextrusion.

The sash, blind frame and frame profiles can be clad with facing shells. Preferred materials for such a facing shell are, in particular, metallic materials such as steel, stainless steel, aluminum or other alloys containing them, but also polymeric materials such as polyvinyl chloride (PVC), in particular hard PVC (PVC-U) or post-chlorinated PVC, Polyamides, polyphenylsulfone (PPSU), polyvinylidene fluoride (PVDF), polyethersulfone (PES), polysulfone (PSU), polyphenylene sulfide (PPS), acrylonitrile butadiene styrene copolymer (ABS), polyoxymethylene (POM), polyester carbonate (PESC) and ASA ( Acrylonitrile-styrene-acrylic ester terpolymer), as well as copolymers and blends of these polymers, whereby these polymer materials can also be used fiber-reinforced, in particular glass-fiber-reinforced, as well as composite materials made of the materials mentioned.

When using such facing shells, it is preferred if a thermal insulation element is arranged between the facing shell and the casement or window frame profile. Such a thermal insulation element is preferably a profile made of a foamed plastic material, such as foamed PVC (polyvinyl chloride), in particular Soft PVC, PP/EPDM (polypropylene/ethylene propylene diene rubber) and foamed polyurethane.

A window or door frame can be obtained by welding mitred pieces of such a hollow chamber profile. The window or door frame obtained is intended for installation in an opening in a wall of a building or can be installed in the opening in the wall of a building.

Such hollow chamber profiles preferably have a main hollow chamber or reinforcement chamber, into which a corresponding reinforcement element is inserted in preferred forms of insertion. It can also be helpful if the reinforcement element is made of a metallic material, in particular aluminum, steel or iron, of a fiber-reinforced polymeric material, in particular a glass-fiber-reinforced polymeric material, or in sections of a combination of the materials mentioned. Such materials have proven to be particularly suitable in practice.

The window or door sash according to the invention, the window frame according to the invention, the window according to the invention and the door according to the invention as well as individual parts thereof can also be manufactured line by line or in layers using a line-building or layer-building manufacturing process (e.g. 3D printing), but preference is given to Manufacture by extrusion or coextrusion.

• Fig. 1 einen Ausschnitt aus einer Querschnittsdarstellung eines Fensterflügels gemäß einer Ausführungsform der vorliegenden Erfindung;
• Fig. 2 einen Ausschnitt aus einer Querschnittsdarstellung eines Fensterflügels gemäß einer weiteren Ausführungsform der vorliegenden Erfindung;
• Fig. 3 einen Ausschnitt aus einer Querschnittsdarstellung eines Fensterflügels gemäß einer weiteren Ausführungsform der vorliegenden Erfindung; und
• Fig. 4 einen Ausschnitt aus einer Querschnittsdarstellung eines erfindungsgemäßen Fensters, das den in Fig. 3 gezeigten erfindungsgemäßen Fensterflügel umfasst.

In the following, the present invention will be explained in detail using the example of window sashes and such a comprehensive window with reference to the embodiments shown in the figures. show:

• 1 a detail of a cross-sectional view of a window sash according to an embodiment of the present invention;
• 2 a detail of a cross-sectional representation of a window sash according to a further embodiment of the present invention;
• 3 a detail of a cross-sectional representation of a window sash according to a further embodiment of the present invention; and
• 4 a section of a cross-sectional view of a window according to the invention, which in 3 shown casement according to the invention includes.

In 1 a section of a cross-sectional view of an embodiment of the sash 1 according to the invention is shown using the example of a window sash with a plastic hollow profile frame formed sash frame 2, which is formed from mitred and welded sections of a window or door sash profile 3. The wing frame 2 of the wing 1 according to the invention is made of a thermoplastic polymer material, preferably polyvinyl chloride (PVC), in particular rigid PVC (PVC-U) or glass fiber reinforced PVC, the additional additives such. B. stabilizers, plasticizers, pigments and the like are added. It is made up of a large number of hollow chambers, which are each surrounded by webs of the casement frame 2 . Centrally, the profile of the casement 2 comprises a main hollow chamber 4, in which a non-illustrated reinforcement element, in particular a steel reinforcement, can be accommodated. The upper web 5 of the main hollow chamber 4 together with an external flap 6 forms a glazing rebate 7 with a rebate base 8. On the side opposite the external flap 6, the profile 3 of the sash frame 2 has a glazing bead groove 9 in which a glazing bead 10 is anchored. A rebate space 11 that is at least partially open on one side is formed by the outer flap 6 , the rebate base 8 and the glazing bead 10 . Insulating glazing 12 is accommodated in the rebate space 11 on the face side. in the in 1 In the illustrated embodiment of the present invention, the insulating glazing 12 comprises two panes of glass 13, 13', in the space between which there is a negative pressure. The insulating glazing 12 is therefore a vacuum insulating glazing 12 . The vacuum insulating glazing 12 has a glass edge 14 directed towards the rebate base 8 .

In the embodiment shown, the glazing bead 10 comprises two glazing seals 15, 15', namely an upper glazing seal 15 that is further away from the rebate base 8 and a lower glazing seal 15' that is closer to the rebate base 8, with the two glass seals 15, 15' on the glazing bead 10 facing pane 13 'of the vacuum insulating glazing 12 abut. The two glass seals 15, 15' are extruded onto the glass bead 10 in the illustrated embodiment of the present invention.

How good looking 1 shows, the glazing bead 10 is formed high in the illustrated embodiment. Thus the main body of FIG. 10 and in particular that in FIG 1 illustrated installation position upper glass seal 15 'over the outer flap 6 of the wing profile 3 addition. In the embodiment shown, the glazing bead 10 even protrudes the rollover seal arranged on the outside rollover 6. As a result, the isotherms important for the formation of condensation water in a temperature range of +10° C. and +13° C. do not run on the room-side surface of the glass pane 13′ of the vacuum insulating glazing 12, but in the volume enclosed by the window sash 1 according to the invention. This significantly reduces the risk of condensation forming in this area.

In addition, the glass inset of the vacuum insulating glazing 12 in the in 1 illustrated embodiment selected as large as possible. In this embodiment, the glass edge 14 of the vacuum insulating glazing 12 is partially on the rebate base 8 . This also contributes to the course of the isotherms, which are important for the formation of condensation water, in a temperature range of +10° C. and +13° C. away from the room-side surface of the vacuum insulating glazing 12 through the vacuum insulating glazing 12 and the window sash profile 3 and through the window sash 1 according to the invention let the ingested volume run out. This also reduces the risk of condensation and thus mold growth. In alternative embodiments of the present invention, it may also be sufficient to select the glass inset so that a small distance, in particular a few millimeters, remains between the glass edge 14 and the rebate base 8 .

Based on Figures 2 to 4 the present invention is to be explained further in relation to further embodiments of the present invention using a window sash 1 according to the invention or using a window 100 according to the invention. In order to avoid repetition, the following is primarily intended to look for differences from the embodiment according to the invention 1 To be received. The regarding 1 The statements made apply with respect to the embodiments according to FIG Figures 2 to 4 accordingly. The same reference symbols stand for the same elements.

In 2 a section of a cross-sectional representation of a further embodiment of the window sash 1 according to the invention is shown, the sash frame 2 of which is in turn formed from cut and welded sections of a window sash profile 3 in the form of a plastic hollow chamber profile.

in the in 2 shown embodiment of the window sash 1 according to the invention, the glazing bead 10 is compared to that in 1 embodiment shown is no longer so high. However, in the installation situation shown, the upper glass seal 15' protrudes still the upper edge of the outer flap 6. In addition, the glass edge 14 of the vacuum insulating glazing 12 is partially on the rebate base 8 of the casement profile 3. As explained, both measures contribute to the reduced risk of condensation forming and thus the formation of mold on the room-side surface of the glass pane 13 ′ of the vacuum insulating glazing 12 .

As a further measure to reduce the risk of condensation formation in the window sash 1 according to the invention 2 A heat-conducting element 16 is arranged between the glazing bead 10 and the rebate base 8 . in the in 2 In the embodiment shown, the heat-conducting element 16 comprises a metal sheet 17 made of a metal with a high thermal conductivity, in particular an aluminum sheet, and a support element 18, which in the embodiment shown is designed as a plastic profile made of polyvinyl chloride (PVC) and through which the heat-conducting element 16 rests on the fold base 8 stands. The aluminum sheet 17 rests on the room-side glass pane 13 ′ of the vacuum insulating glazing 12 . In addition, the aluminum sheet 17 extends approximately over the entire length between the glass pane 13' and the glazing bead 10. In addition, the aluminum sheet 17 is arranged in the rebate space 11 by the support element 18 in such a way that the distance between the aluminum sheet 17 and that in the installation situation according to 2 lower side of the glazing bead 10 is about 0.5 mm. In alternative embodiments, the aluminum sheet 17 can also be in direct contact with the glazing bead 10 .

Thermal energy from the interior of the room is transported directly to the surface of the glass pane 13 ′ of the vacuum insulating glazing 12 through the aluminum sheet 17 of the heat conducting element 16 , which also contributes to reduced condensation water formation on the surface of the vacuum insulating glazing 12 .

Another embodiment of the window sash 1 according to the invention is in 3 shown as a detail from a cross-sectional view. The sash frame 2 of the window sash according to the invention is also formed according to this embodiment from sections of a window sash profile 3 in the form of a plastic hollow chamber profile that are mitred and welded together. According to this embodiment, too, the installation situation according to FIG 3 upper glass seal 15', the upper edge of the outer flap 6 and the glass edge 14 of the vacuum insulating glazing 12 partially rests on the rebate base 8 of the casement profile 3, which in turn contributes to a less likely formation of condensation on the room-side surface of the glass pane 13' of the vacuum insulating glazing 12.

Also the in 3 illustrated window sash 1 according to the invention in turn comprises a heat-conducting element 16 as a further measure to reduce the risk of condensation. According to this embodiment, the heat-conducting element 16 is made entirely of a metal with high thermal conductivity, in particular aluminum. For this purpose, the heat-conducting element 16 comprises an aluminum sheet 17 folded over at one end, the aluminum sheet 17 resting with the folded-over end against the room-side glass pane 13 ′ of the vacuum insulating glazing 12 . From the room-side surface of the glass pane 13 ', the aluminum sheet 17 extends almost over the entire distance between the glass pane 13' and the groove-side profile wall of the glazing bead 10. In addition, in 3 Heat-conducting element 16 shown has two support elements 18, 18', with which the heat-conducting element 16 stands up on the fold base 8. In addition, the aluminum sheet 17 is arranged by the support elements 18, 18 'in the rebate 11 that the distance between the aluminum sheet 17 and in the installation situation according to 2 lower side of the glazing bead 10 is about 0.4 mm.

Through the heat conducting element 16, thermal energy from the interior of the room reaches the surface of the room-side glass pane 13′ of the vacuum insulating glazing 12. The aforementioned measures largely reduce the likelihood of condensation forming on the surface of the glass pane 13′ and the associated mold growth.

In 4 Finally, a section of a cross-sectional representation of a window 100 according to the invention is shown, which corresponds to the 3 illustrated casement 1 according to the invention includes. In addition, the window 100 according to the invention comprises a window frame 19 which, in the illustrated embodiment, is formed from sections of a window frame profile 20 made of a plastic material, in particular PVC, which are mitred and welded together. In the window 100 according to the invention, the sash 1 according to the invention rests against the window frame 19 via a frame seal 21 and a stop seal 22 on the sash frame 3 when the window 100 according to the invention is closed. The sash 1 according to the invention is rotatably mounted on the window frame 19 via fittings (not shown).

The present invention has been described in detail by way of example with reference to the embodiments of a window sash and a window according to the present invention shown in the figures. It is understood that the present invention is not limited to the embodiment shown in the figures, the scope of the present invention being indicated by the appended claims.

Claims (11)

Window or door leaf (1), comprising (a) a sash frame (2) formed from sections of a window or door sash profile (3) and having a rebate base (8) and an outer flap (6), (b) a glazing bead (10) anchored in a glazing bead groove (9) of the window or door leaf profile (3) which, together with the rebate base (8) and the outer flap (6), forms a rebate space (11) that is at least partially open on one side, wherein the glazing bead (10) comprises at least one glazing seal (15, 15'); and (c) insulating glazing (12) received in the rebate space (11) on the front side, which comprises at least two glass panes (13, 13'), the space between which is subjected to negative pressure and which has a glass edge (14) directed towards the rebate base (8). ; the at least one glass seal (15, 15') resting at least in sections on the glass pane (13') facing it, characterized in that viewed in cross section of the window or door leaf (1), the distance between the glass edge (14) and the point of the at least one glass seal (15') which is furthest away from the glass edge (14) is greater than the distance between the glass edge (14) and the point of the outer flap (6) which is furthest away from the glass edge (14). Window or door leaf (1) according to Claim 1, characterized in that viewed in cross section of the window or door leaf (1), the distance between the glass edge (14) and the rebate base (8) is at most 15 mm, preferably at most 10 mm. Window or door leaf (1) according to Claim 1 or Claim 2, characterized in that a heat-conducting element (16) is arranged between the glazing bead (10) and the rebate base (8). Window or door leaf (1) according to Claim 3, characterized in that the distance between the heat-conducting element (16) and the vacuum insulating glazing (12) is at most 2 mm, preferably at most 1 mm. Window or door leaf (1) according to Claim 4, characterized in that the heat-conducting element (16) bears against the insulating glazing (12) at least in sections. Window or door leaf (1) according to one of Claims 3 to 5, characterized in that the heat-conducting element (16) comprises a material which has a thermal conductivity of more than 15 W/mK, preferably a thermal conductivity of more than 150 W/mK. Window or door leaf (1) according to one of Claims 3 to 6, characterized in that the distance between the heat-conducting element (16) and the side of the glazing bead (10) facing the rebate base (8) is at most 2 mm. Window or door leaf (1) according to Claim 7, characterized in that the heat-conducting element (46) bears against the glazing bead (10) at least in sections. Window or door leaf (1) according to one of Claims 3 to 8, characterized in that the heat-conducting element (16), viewed in the cross section of the window or door leaf (1), extends over at least 85% of the distance between the vacuum insulating glazing (12) and the Glazing bead groove (9), preferably extending over at least 90% of the distance between the vacuum insulating glazing (10) and the glazing bead groove (9). Window or door leaf (1) according to one of Claims 3 to 9, characterized in that the heat-conducting element (16) comprises at least one support part (18, 18') with which the heat element (16) rests on the rebate base (8). Window (100) or door, comprising a blind frame (4) or a frame and a window or door leaf (1) according to one of Claims 1 to 10 accommodated therein when the window (100) or the door is closed.

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