EP2423421B1 - Concealed thermally separated wood/metal window sash frame - Google Patents

Description

Field of the invention

The invention relates to a sash outer shell for a sash inner shell of a sash of a window, wherein the sash inner shell along at least one axis of rotation is pivotally mounted to a window frame of the window can be arranged. Furthermore, the invention relates to a sash for a window with a sash inner shell and a wing frame outer shell according to the invention. Furthermore, the invention relates to a window with a frame and a sash, which has a sash inner shell and a wing frame outer shell according to the invention. The window according to the invention, on the room side, essentially comprises wood or plastic and, on the weather side, essentially metal.

Background of the invention

Windows of the type mentioned are known in the art. The principle of the wood and aluminum windows combines in an advantageous way the positive properties of an aluminum window with the positive properties of a wooden window. By virtue of the fact that the window is essentially made of aluminum on the weather side, a substantially weather-resistant window can be provided, while the window parts made of wood, which are visible from the interior, convey a natural impression of the window and have a positive effect on the interior design.

Such window frames usually have a frame, consisting of an outer and an inner frame shell, and a sash, consisting of an outer and an inner sash shell on.

From the DE 10 2004 049 120 A1 a wood / metal sash frame is known in which the sash has a sash inner shell and a sash outer shell. With the casement outer shell, together with a rubber lip acting on the outside of a two-pane insulating glass, the two-pane insulating glass is pressed against a rubber lip of the casement inner shell and thereby held in the casement. The wing frame outer shell is connected by screws with the casement inner shell.

The wing frame outer shell has an inner shell and an outer shell, which are interconnected via a central frame. The middle frame acts as a thermal separation between the inner shell and the outer shell of the wing frame outer shell. To further improve the insulating properties between the frame and the sash, a rubber lip is provided on the frame, which touches the sash when the window is closed and so the cavity, which is formed with the window closed between sash and frame, divided into two cavities and this in the Essentially thermally separated from each other.

In order to improve the heat transfer value, ie, the thermal insulating property of a window, it is known to use a three-letter insulating glass instead of a two-pane insulating glass. However, in the case of the DE 10 2004 049 120 A1 The two-pane insulating glass is not easily replaced by a three-pane insulating glass, because on the one hand the maximum clamping area between the inner and the outer sealing lip for a three-pane insulating glass is too low and on the other due to the higher weight of a three-Scheibenisolierglases the Wood-fabricated wing frame inner shell, on which the inner sealing lip is arranged, would have to be made wider in order to ensure a stable recording of a three-pane insulating glass.

However, a broader design of the sash inner shell has the disadvantage that it would protrude very far into the glass surface and thus would be visible from the outside in the closed state of the window. To avoid this, the frame outer shell would have to survive very far and protrude into the glass surface. Both are disadvantageous for the window construction, since neither the different materials should be visible, not to destroy the uniform impression of a whole facade, nor should the available window area be unnecessarily limited by a striking solid frame or by a massive and wide sash interior shell ,

From the DE 20 2004 016 404 U1 and from the DE 202 03 748 U1 For example, there is known a sash frame having a sash outer shell, the sash outer shell having an inner shell, a middle frame, and an outer shell. The inner shell, the middle frame and the outer shell are each designed as a hollow profile. A glass pane is clamped between the outer shell of the casement outer shell and a casement inner shell, wherein corresponding sealing elements are respectively arranged on the casement inner shell and on the outer shell of the casement outer shell.

Object of the invention

The object of the present invention was therefore to provide a window frame which has improved thermal insulation properties and which, while avoiding the disadvantages known from the prior art, can also accommodate a three-pane insulating glass.

Inventive solution

This object is achieved by an inventive sash outer shell, a sash according to the invention and a window according to the invention according to the independent claims. Advantageous embodiments are specified in the respective dependent claims.

Accordingly, the invention provides a sash outer shell for a sash inner shell, wherein the sash inner shell substantially Has wood or plastic and is pivotable about at least one axis of rotation to a frame can be arranged. The sash outer shell has an inner shell, a middle frame and an outer shell. The inner shell, the middle frame and the outer shell are each designed as a hollow profile, wherein the middle frame connects the inner shell thermally insulating with the outer shell. At least one sealing element, by means of which a window pane can be clamped between inner shell and outer shell, is arranged on the inner shell and on the outer shell.

Because the window pane can be clamped between inner shell and outer shell, the window pane is completely supported by the wing frame outer shell, so that the wing frame inner shell does not have to be significantly wider, even if a three-pane insulating glass is used, in order to be able to receive the three-pane insulating glass safely and stably. Because the center frame, the inner shell and the outer shell are each designed as a hollow profile, sufficient strength is ensured with good thermal insulation effect, so that the wing frame outer shell is on the one hand suitable to fix a three-pane insulating sufficiently strong, and on the other hand sufficient insulation by avoidance ensured by heat or cold bridges.

In a preferred embodiment, the inner shell of the sash outer shell is connectable to the sash outer shell via at least one attachment means, wherein it is particularly advantageous if the at least one attachment means is configured to connect the inner shell without constraint with the sash inner shell.

This can be compensated in an advantageous manner stresses on the sash outer shell or sash inner shell, which can be caused by differing thermal length expansions of the materials used for the sash outer shell and the sash inner shell, at the same time a secure and stable attachment of the sash outer shell is ensured on the sash inner shell.

The fastening means may comprise a rotary holder. This allows a particularly simple assembly of the casement inner shell to the casement outer shell. In particular, the casement inner shell can be made independently of the casement outer shell.

On the inner shell of the wing frame outer shell, a first central sealing element may be arranged, which touches the window frame with the window closed and a rebate between sash, which is formed by the sash outer shell and the sash inner shell, and frame thermally and largely airtight separates into an inner cavity and an outer cavity ,

The inner shell and the outer shell can essentially comprise metal, preferably light metal, very particularly preferably aluminum, and the middle frame can have a stable, heat-insulating plastic.

The window frame may comprise a window frame outer shell which essentially comprises metal, preferably light metal, very particularly preferably aluminum, and a window frame inner shell which essentially comprises wood.

Furthermore, the invention provides a casement which has an inner casement shell and an outer casement outer shell according to the invention.

Furthermore, the invention provides a window frame with a sash and a frame, wherein the sash has a sash inner shell and a wing frame outer shell according to the invention. The Sash frame inner shell has essentially wood or plastic. The inner shell and the outer shell of the wing frame outer shell have substantially metal. The inner shell and the outer shell are connected to one another via a central frame, which essentially comprises plastic, in a thermally insulating manner. The frame comprises a frame outer shell, which essentially comprises metal, and a frame inner shell, which essentially comprises wood. At least one sealing element, by means of which a window pane can be clamped between inner shell and outer shell, is arranged on the inner shell and on the outer shell. The windowpane may comprise a three-pane insulating glass.

It has proven to be advantageous to arrange a rollover gasket on the casement inner shell, which with the window closed touches the frame inner shell of the frame and a rebate space between the sash and frame insulated thermally and largely airtight. As a result, it can be avoided that, in the closed state of the window, room air enters the rebate space between the sash frame and the frame.

In a preferred embodiment, a first center seal element can be arranged on the inner shell of the casement outer shell, which touches the frame when the window is closed. This can be avoided that on the one hand the air located in the outer cavity can reach the center frame and on the other hand, the air located in the outer cavity or middle cavity can reach the wing frame inner shell.

Advantageously, a second central sealing element is arranged on the frame, which touches the casement outer shell, preferably the middle frame when the window is closed.

This prevents that the air located in the outer cavity can reach the inner shell of the casement outer shell.

It is particularly advantageous if the first center seal element and the second center seal element are arranged in such a way that, when the window is closed, they form a circumferential cavity together with the window frame and the wing frame outer shell, which thermally and largely airtightly separates an outer cavity from an inner cavity. The resulting in the closed state of the window between the frame and the sash cavity (rebate) is divided into three cavities, resulting in improved thermal insulation.

It is advantageous if the second center seal element is fastened to the outer frame shell and to the inner frame shell. Thus, a cold entry, which can occur at the contact points between the frame inner shell and the frame outer shell, can be reliably avoided.

It has proved to be favorable if the middle frame has at least four, preferably at least five cavities. This provides a particularly stable middle frame with at the same time particularly good thermal insulation properties.

Brief description of the figures

Further details and features of the invention and further advantages will become apparent from the following description taken in conjunction with the drawings. The single figure shows a window frame according to the invention with a sash and a frame, which are each designed according to the invention.

Detailed description of the invention

Fig . 1 shows a window frame according to the invention with a sash and a frame. The casement has a casement inner shell 2 and a casement outer shell, the casement outer shell having an inner shell 7, an outer shell 17 and a middle frame 11 connecting the inner shell 7 with the outer shell 17.

The inner shell 7 and the outer shell 17 of the wing frame outer shell are made of metal, preferably aluminum. The inner shell 7 and the outer shell 17 of the wing frame outer shell are also designed as a hollow profile in order to achieve a reduced heat conduction of the inner shell 7 and the outer shell 17.

On the inner shell 7 and on the outer shell 17 of the casement outer shell each have a sealing element 4, 5 are arranged. About the sealing elements 4, 5, a three-pane insulating glass 3 is clamped between the inner shell 7 and the outer shell 17 of the wing frame outer shell. The three-pane insulating glass 3 is thereby completely detached from the sash outer shell, i. supported by the inner shell 7, the outer shell 17 and the middle frame 11. Because the inner shell 7 essentially comprises metal, the part projecting into the glass surface, i. the part of the inner shell 7, which receives the inner sealing element 4, be designed narrow and yet have sufficient stability for receiving the disc.

The inner shell 7 and the outer shell 17 are connected to each other via a central frame 11, wherein the middle frame 11 is designed as a hollow profile. In the in Fig. 1 In the embodiment shown, the center frame has five cavities. As with the inner shell 7 and the outer shell 17, a particularly good thermal insulating property of the middle frame is achieved by the cavities formed in the middle frame. By the struts, which the cavities form the middle frame 11, also a sufficient stability and rigidity of the center frame 11 is ensured. The middle frame 11 is made here of a stable plastic. But it can also be made of another stable, preferably heat insulating material.

For connecting the inner shell 7 or the outer shell 17 to the middle frame 11, the middle frame 11 has two dovetailed guide rails, which are engaged on the one hand with a dovetailed profile 8 of the inner shell 7 and on the other hand with a dovetailed profile of the outer shell 17 and firmly connected thereto ,

It is advantageous that the entire sash outer shell 7, 11, 17 can be made independently of the sash inner shell 2, together with the clamped three-pane insulating glass, because the sash inner shell 2 for clamping the window is no longer necessary, as it is in the case of the DE 10 2004 049 120 A1 known wing frame is the case.

In the edge region of the three-pane insulating glass 3, a glazing block 6 can be arranged, which can additionally contribute to securing the position and stiffening of the window glass in the casement outer shell.

The casement outer shell is fastened to the casement inner shell 2 by means of fastening means 15. It is advantageous to attach the wing frame outer shell without constraint on the casement inner shell 2, to compensate for stresses on the casement inner shell or on the casement outer shell, which may be caused by temperature-induced linear expansion of the casement inner shell or the casement outer shell. It is advantageous to provide as a fastening means 15 rotary holder, which allow easy mounting of the casement inner shell on the casement outer shell 2.

The three-pane insulating glass 3 is completely supported by the sash outer shell 7, 11, 17. Because the inner shell 7 of the sash outer shell is made of a metal, preferably of aluminum, the portion of the inner shell 7 protruding into the disc 3, i. the portion on which the inner sealing element 4 is arranged, be designed narrow, while still ensuring that the glass sheet 3 is held securely and stably by the sash outside shell.

At the rebate space facing side of the inner shell 7 of the wing frame outer shell, a center seal element 9 is arranged, which contacts the frame inner shell 21 when the window is closed. This avoids, on the one hand, that room air can reach the middle frame 11 or the outer shell 17 of the casement outer shell. The central sealing element 9 is designed here as a cavity profile, so that an additional cavity is formed in the rebate, which further improves the thermal insulation.

In the region of the pivot point 20, the casement inner shell 2 has a rollover seal 19, which prevents in the closed state of the window that room air can get into the rebate between the frame and the sash.

On the frame, a further center seal 18 is arranged, which protrudes into the rebate between the frame and the sash. The protruding into the rebate rubber lip of the center seal member 18 touches the window closed the middle frame 11. This prevents that outside air can reach up to the sash inner shell 2. Together with the central sealing element 9, the center sealing element 18 divides the rebate space between the frame and the sash in three cavities, resulting in a particularly good thermal insulation.

In addition, the center seal member 18 may be configured as a hollow profile in order to further improve the thermal insulation. The center seal element 18 is attached both to the frame inner shell 21 and to the outer frame shell 1, so that outside air can not get over the contact points between the inner frame shell 21 and outer frame shell 1 in the outer cavity 13 of the rebate. At the same time it is ensured that between the frame inner shell 21, which may be made of wood, and the frame outer shell 1, which may be made of aluminum or another metal, a sufficient air circulation is possible. For easy attachment of the frame outer shell 1 to the frame inner shell 21 Rahmenklipsteile 16 may be provided with the aid of which the outer frame shell can be easily attached to the frame inner shell.

The casement outer shell 7, 11, 17 can be made independently of the casement inner shell 2, which considerably simplifies the production process, in particular of the casement. After separate production of the casement outer shell 7, 11, 17 and the casement inner shell 2, the casement inner shell 2 can be fixed by means of the rotary holder 15 on the casement outer shell or on the inner shell 7 of the casement outer shell.

The sash inner shell 2 may have hinges to pivotally arrange the sash, for example, on the frame inner shell 21.

LIST OF REFERENCE NUMBERS

1

Frame outer shell

2

Sash inner shell

3

Insulating glass, e.g. 3-pane insulating glass

4

inner sealing element

5

outer sealing element

6

glazing block

7

Inner shell of the wing frame outer shell

8th

dovetailed recess

9

Center sealing element on the inner shell of the wing frame outer shell

10

middle cavity

11

Middle frame of the wing frame outer shell, preferably a hollow profile made of plastic

12

Cavity in the middle frame

13

outer cavity

14

inner cavity

15

Fastening means, preferably rotary holder for sash outer shell

16

Fastener for frame outer shell

17

Outer shell of the wing frame outer shell

18

Center seal element on the frame

19

Overlap seal

20

pivot point

21

Frame inner shell

Claims (12)

1. A casement outer shell for a casement inner shell (2) comprising essentially wood or plastic and which may be pivotably arranged on a window frame (1, 21) along at least one axis of rotation, said casement outer shell having an inner shell (7), a centre frame (11) and an outer shell (17), with the inner shell (7), the centre frame (11), and the outer shell (17) being each realised in the form of a hollow section, with the centre frame (11) connecting the inner shell (7) and the outer shell (17) in a thermally insulating manner, characterised in that the inner shell (7) and the outer shell (17) have each at least one sealing member (4, 5) arranged thereon via which a window pane (3) may be fixed between the inner shell (7) and the outer shell (17).
2. The casement outer shell as claimed in claim 1, wherein the inner shell (7) of the casement outer shell may be connected to the casement inner shell (2) via at least one fastening means (15), preferably a rotary holder, wherein the at least one fastening means (15) is configured so as to connect the inner shell (7) and the casement inner shell (2) in a tension-free manner.
3. The casement outer shell as claimed in any of the preceding claims, wherein the inner shell (7) of the casement outer shell has a first middle seal member (9) arranged thereon which, when the window is closed, contacts the window frame and thermally and in an essentially air-tight manner separates a rabbet between the casement, which is formed by the casement outer shell (7, 11, 17) and the casement inner shell (2), and the window frame into an inner cavity (14) and an outer cavity (10, 13).
4. The casement outer shell as claimed in any of the preceding claims, wherein the inner shell (7) and the outer shell (17) have essentially metal, preferably light metal, most preferably aluminium, and wherein the centre frame (11) has a sturdy, heat-insulating plastic.
5. A casement having a casement inner shell (2) and a casement outer shell as claimed in any of the preceding claims.
6. A window framing having a window frame and a casement as claimed in claim 5.
7. The window framing as claimed in claim 6, wherein the window frame includes a window frame outer shell (1), comprising essentially metal and a window frame inner shell (21), comprising essentially wood.
8. The window framing as claimed in claim 6 or 7, wherein the inner shell (7) of the casement outer shell has a first middle seal member (9) arranged thereon which, when the window is closed, contacts the window frame (1, 21) and thermally and in an essentially air-tight manner separates a rabbet between the casement and the window frame into an inner cavity (14) and an outer cavity (10, 13).
9. The window framing as claimed in any one of the preceding claims 6 to 8, wherein the casement inner shell (2) has an overlap seal (19) arranged thereon which, when the window is closed, contacts the window frame inner shell (21) of the window frame and insulates the inner cavity (14) thermally and in an essentially air-tight manner.
10. The window framing as claimed in any one of the preceding claims 6 to 9, wherein the window frame has a second middle seal member (18) arranged thereon which, when the window is closed, contacts the casement outer shell (7, 11, 17), preferably the centre frame (11).
11. The window framing as claimed in claim 10, wherein the first middle seal member (9) and the second middle seal member (18) are arranged in such a manner that when the window is closed they cooperate with the window frame and with the casement outer shell to form a circumferential cavity (10) that separates an outer cavity (13) from an inner cavity (14) thermally and in an essentially air-tight manner.
12. The window framing as claimed in any one of claims 10 or 11, wherein the second middle seal member (18) is fastened to the window frame outer shell (1) and to the window frame inner shell (21).

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