KR100939115B1 - Sash bar suitable for insulating window units - Google Patents

Abstract

The window cross bar (10) intended for the gap between two panes of an insulating window unit comprises two profile elements (20, 30) which are joined to one another before insertion into this gap.

Description

SASH BAR SUITABLE FOR INSULATING WINDOW UNITS}

The present invention relates to a sash bar, and more particularly to a sash bar disposed in the space between the panes of the insulation window unit, for example double glazing.

In insulation window units (eg, US Pat. No. 6,339,909) that provide a warm edge (unbared) condition, maintenance of the condition to insulate the edge is very important.

In some applications, such as renovation of old buildings or in other applications where the visual appearance of the windows divided by the so-called chassis bars is important, the chassis bars are used. When insulating window glass is manufactured by assembling a plurality of similar insulating window units, the final insulating window unit is very expensive.

Another way is to use one large sized insulation window unit with a chassis bar attached to the outer surface of the pane. However, this has a problem that the appearance is not beautiful.

Another way is to use a window unit with a chassis bar attached to the outside of the window into which additional chassis bars are inserted in the spaces between the panes. Such an insulation window unit is known as an insulation window with a "Vienna sash bar" (Wiener Sprosse).

Another way is to provide only a chassis bar in the space between the panes without providing a chassis bar attached to the outside of the pane. This insulation window unit is called an insulation window unit with a "Schweizer Sprosse or Kreuz" or "SZR-Sprosse".

Hollow profiles in Swiss sash bars are proposed, for example, in EP 1 119 681 B1 (EP 1 119 681 B1). Another example of the switch chassis is proposed in German Patent No. 196 44 544 (DE 196 44 544 C1) and German Utility Model Publication No. 201 11 221 (DE 201 11 221 U1).

In order to maintain edge insulation in these Swiss or Vienna chassis bars, it is important that the chassis bars inserted into the spaces between the panes do not come into contact with the pane. In addition, when the material used for the chassis bar inserted into the space between the window glass is aluminum or a material having high thermal conductivity, the heat insulating properties or heat insulating performance of the double glass is significantly reduced. The aforementioned documents therefore suggest the use of a chassis bar made of a thermoplastic material with low thermal conductivity. However, these materials have high thermal expansion. EP 1 119 681 (EP 1 119 681 B1) proposes to use an inner layer made of glass reinforced ABS and an outer layer made of PMMA. German Utility Model Publication No. 201 11 221 (DE 201 11 221 U1) proposes to use a coextruded profile having an inner layer of ASA or ABS with a low coefficient of thermal expansion and an outer layer of PMMA. have.

The known methods mentioned above cannot provide different colors or appearances for the other two sides of the chassis bar facing the two panes. For example, it is not possible to provide one collar for the inward facing side of a building or to provide the other collar or appearance for the exterior or the exterior facing side of the building. In addition, the above materials tend to leak gas, which may result in deterioration of the thermal insulation properties or thermal insulation performance of the insulating glass, or may cause fogging of the inside of the window glass. In addition, when the coefficient of thermal expansion is higher, the bending of the chassis bar at high temperatures is visually observed from a distance. Each of patents WO 01/12940 11 and US Pat. No. 5,657,590 (US 5,657,590) propose a chassis bar according to the preamble of claim 1.

Therefore, the present invention has an object to solve the above problems in the known double glass.

This object is achieved by a chassis bar according to claim 1.

Further objects of the invention are achieved by the dependent claims.

Advantages and features of the present invention can be easily understood from the detailed description of exemplary embodiments with reference to the accompanying drawings and claims.

1 is a schematic representation of a Vienna sash bar;

2 is a schematic representation of a Swiss sash bar;

3 is a schematic view of the assembled chassis bar in accordance with one embodiment of the present invention.

1 shows an insulating window unit having a "Vienna sash bar". The insulating window unit formed as double glazing comprises a first glazing 1 and a second glazing 2, which enclose a space 3 formed therebetween. Although not shown in the figure, the space 3 may be sealed by, for example, a spacer profile, a sealing material, a window frame, or the like. The space 3 is usually filled with an inert gas such as argon before sealing.

The panes 1, 2 extend in the X-Z plane shown in FIG. 1. The first chassis bar 11 is attached to the outer surface of the first window pane 1. A second chassis bar 12 is attached to the outer surface of the second window pane 2. The first and second chassis bars 11.12 may be made of wood or other suitable materials such as metal, plastic, composite materials, and the like. The first and second chassis bars 11.12 extend in the Z direction (length direction). When the sash bars are connected to form a sash bar grid or other sash bar combinations, the sash bars 11, 12 may further extend in different directions. However, in order to explain the present invention, the description will be made in consideration of the chassis bar extending only in the longitudinal direction.

A third chassis bar 10 is provided in the space between the window panes 1.2 and in the space between the first and second chassis bars 11, 12. The third chassis bar 10 extends in parallel between the first and second chassis bars 11. 12. The width (width in the X direction) of the third chassis bar 10 is preferably selected to be equal to or less than the corresponding widths of the first and second chassis bars 11, 12.

The third chassis bar 10 of the "Vienna Chassis Bar" system is an object of the present invention.

2 shows a "Swiss Chassis Bar". As mentioned above, the Swiss sash bar is a sash bar provided only in the space between the panes 1-2. The chassis bar 10 of FIG. 2 is also one object of the present invention.

Chassis bar 10 according to an embodiment of the present invention shows an assembled chassis bar that includes two profile bodies 20, 30 in FIG. 3. Looking at the geometry of the insulation window unit into which the chassis bar 10 is inserted, a first (outer) profile body 20 and a second (inner) profile body 30 are provided. Here, the terms "outer" and "inner" are selected corresponding to the arrangement in the Y direction, wherein the first pane 1 is the outer pane and the second pane 2 is the inner pane.

The cross-sectional shapes of the first and second profile bodies 20. 30 of the exemplary embodiment shown in FIG. 3 are basically the same except for the portions 22 and 33 which will be described later. In particular, when the two profile bodies 20, 30 are connected, the width in the X direction is the same so that the edges of the two profile bodies 20, 30 can be aligned. The cross-sectional shape of the two profile bodies 20, 30 is preferably such a structure, but need not be the same.

The first profile body 20 comprises two legs (walls) 21 having a cross-sectional shape projecting in the inner Y direction of the assembled chassis bar 10. End portions of the legs 21 are provided with connecting portions 22, respectively. Similarly, the second profile body 30 comprises two legs (walls) 31 which have a cross-sectional shape projecting inwardly of the assembled chassis bar 10 and at the ends thereof correspond to or match the connection 33. ). The positions of the legs 21. 31 formed as longitudinally extending walls in the profile are selected in the X direction to face each other with the legs 21, 31 assembled. As a result, the corresponding connections 22, 33 can be engaged with the edges 26, 36 aligned.

The scheme shown in FIG. 3 provides a clipping or snap-fitting connection, but the profile can be attached using an adhesive, epoxy or the like.

The two profile bodies 20, 30 may also be additionally or alternatively welded or fused (preferably along the edges 26, 36).

The profile bodies 20, 30 are preferably manufactured as intermediate products. In addition, the profile bodies 20 and 30 may be made of a coloring material, or a foil or a coating may be stacked.

As shown in FIG. 3, the separation surfaces of the two profile bodies 20, 30 preferably extend in the X-Z plane, ie in the plane of the space 3 of the insulating glass unit on which the chassis bars are mounted.

By forming two profile bodies (partial profile bodies) to form the chassis bars, and then attaching the profile bodies, the chassis bars having different colors can be effectively produced when viewed from the inside and the outside. In addition, only one side may be provided with a laminated profile having a specific structure or appearance, such as a wooden structure or a wooden appearance.

Since the collar / appearance of each of the profile bodies 20, 30 can be freely combined, the separate partial profile bodies 20, 30 can be prefabricated and then combined according to the needs of the consumer.

3 shows an embodiment with two symmetrically separated profile bodies 20, 30, but using the same partial profile body for assembled chassis bars of different width (X direction) or different height (Y direction). Asymmetrical separation and / or connection members can be used for this purpose. From these results, the number of partial profiles or parts for forming the assembled chassis bar according to the invention is not limited to two.

For example, the chassis bar may be made of a composite profile, such as a metal plastic composite profile, for example manufactured similar to the composite profile proposed in US Pat. No. 6,339,909 (US 6,339,909). In this case, the composite profile comprises a profile body made of a first material. The first material is preferably a plastic material, more preferably polyolefin or polyurethane, even more preferably polypropylene, polyethylene terephthalate, polyamide or polycarbonate. A representative example of polypropylene is Novolen 1040K.

In addition, the first material preferably has a thermal conductivity value of less than 0.3 W (mK), and more preferably has a thermal conductivity value of 0.2 W (mK) or less.

The composite profile may further comprise a reinforcing layer made of a second material, the second material being made of a plastically deformable material, preferably metal, more preferably steel or stainless steel having corrosion protection. It may be made of. It is preferable that the said 2nd material has a thermal conductivity value of 50 W (mK) or less, and it is more preferable to have a thermal conductivity value of less than 15 W (mK). The thickness of the reinforcing layer is preferably less than 0.5 mm, more preferably less than 0.2 mm or less than 0.1 mm.

Corresponding profiles can be produced by coextrusion molding the profile body and the reinforcing layer, for example. As an example of a stainless steel foil, there is a steel foil 1.4301 or 1.4016 according to DIN EN 10 088 12 with a thickness of 0.05 mm. Techniques for the selection of suitable materials can also be obtained from US Pat. No. 6,339,909 (US 6,339,909).

The reinforcement layer can be provided in the profile body so that the color can be selected by coloring or dyeing the first material. Additionally or alternatively, the reinforcing layer may be provided on the visible side of the composite profile and may be colored or dyed, for example by coating or polishing. The reinforcing layer may be laminated with one or more foils and the like in the same manner as described above.

Testing of the insulation window unit is time consuming and expensive since the test window unit has to be tested for months, even years. The use of composite chassis bars is therefore very effective since it is known that the properties of the insulating window have not changed from the fact that the corresponding materials or manufacturing techniques have already been used in the spacer profile.

Therefore, no separate testing of the material is required for UV resistance and fogging. In addition, the expansion coefficient of these composite chassis bars has a spacer profile corresponding to the (low) expansion coefficient, so that visually observable bending of the chassis bars can be prevented. In addition, the mechanical strength is far superior to the mechanical strength of chassis bars made only of plastic material. In addition, although not necessarily required, the sash bar can be used incorporating (containing) a hygroscopic material (drying agent) in the same manner as a spacer profile.

In addition, when the metal-plastic composite profile is used, the chassis bar can be manufactured as one profile body (not separately as a partial profile body). In this case, another collar can be provided, for example, by providing a reinforcing layer (metal layer) only on one side that is coated or laminated with a different color or structure than the profile body.

Each of the foregoing features and techniques may be used separately or in connection with other features and techniques for providing an improved insulation window unit and a method for using the improved insulation window unit. As a representative example of the present invention, which is used a lot of additional features and techniques separately or combined, it has been described in detail with reference to the accompanying drawings. These detailed descriptions are merely for the person skilled in the art to carry out the preferred form of the present invention, and do not limit the spirit of the present invention. Thus, combinations of features and steps in the detailed description are not necessarily required to practice the invention in its broad scope, and are only specifically described as representative examples of the invention.

In addition, the various features of the exemplary embodiments and the dependent claims can be combined with any method, even though not specifically and clearly enumerated, to provide additional useful embodiments of the invention. Furthermore, all the features proposed in the description and claims are not only for the purpose of the original purpose, but also independently of the combination of the features in the embodiments and / or claims, separately or independent of one another for the purpose of not limiting the claimed subject matter. May be suggested. It is also evident that all ranges of values or indications of a group of entities suggest all possible parameters or entities for the purpose of not limiting the original purpose or object.

Claims (9)

As a chassis bar provided in the space 3 between the panes 1, 2 of the insulation window unit and not in contact with the panes 1, 2, the first profile body 20 and the second profile body. , The first profile body and the second profile body are metal plastic composite profiles, The metal-plastic composite profile comprises a profile body of a plastic material having a thermal conductivity of less than 0.3 W (mK) and a reinforcement layer made of a metal having a thermal conductivity of 50 W (mK) or less and having a thickness of less than 0.5 mm. doing Chassis Bar. The method of claim 1, The first and second profile bodies have a cross-sectional shape having edges 26, 36 extending in the longitudinal direction z and extending in the longitudinal direction z, and the profile so that the edges are aligned in an assembled state. To enable the assembly of the bodies 20, 30, The first profile body 20 comprises a wall 21 extending in the longitudinal direction z, which wall is assembled via a clipping or snap-fitting connection 22 at the protruding end of the wall 21. Protrude into the inner space of the chassis bar, The second profile body 30 includes a wall 31 extending in the longitudinal direction z, wherein the wall 31 is assembled to face the wall 21 of the first profile body 20. Protrude inward of the chassis bar, the second profile body having a clipping or snap-fitting connection 33 that is matched at the protruding end of the wall 31. Chassis Bar. The method according to claim 1 or 2, The plastic material comprises at least one of polyurethane, polypropylene, polyethylene terephthalate, polyamide, polycarbonate, The second material is made of stainless steel or steel with corrosion protection Chassis Bar. The method of claim 3, The chassis bar may be laminated, polished, coated or colored with foil Chassis Bar. delete delete delete delete delete

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