EP1869278B1 - Composite profile and method for making a composite profile for frames of wall elements, doors and windows - Google Patents

Description

The invention relates to a composite profile for frames of wall elements, doors or windows and a method for producing the composite profile with the features of the preamble of the independent claims.

Composite profiles of this type also serve in particular to ensure thermal insulation for frame structures. Fire protection is another possible application of such profiles.

The EP 1 020 608 A1 shows, for example, a composite profile with two roughly box-shaped metal profiles and an insulation material arranged between them. The metal profiles are connected to each other by metal bolts penetrating the insulation material. These metal bolts are welded to mutually parallel end walls of the metal profiles. A foaming building material is attached directly to the side surface of the insulation material, which is offset inwards.

In the DE 195 26795 describes a composite profile with two metal profiles and insulation material arranged between them. The metal profiles are connected to one another by welding individual metal webs or a sheet extending in the longitudinal direction of the profile to the side walls of the metal profiles. An embodiment of the DE 195 26795 relates to a composite profile in which the insulating material is arranged offset inwards with respect to the side walls of the metal profiles. A connecting plate has a step-like keying, with the aid of which the connecting plate fits precisely can be positioned and placed on the metal profiles. The depression created by the keying can be covered by a tape. A particular disadvantage of this composite profile is that at least part of the connecting plate protrudes from the side walls. The handling and use of such a profile can therefore be difficult. Furthermore, this composite profile arrangement has a disadvantageous effect on the cladding of the composite profile. From a visual point of view, too, such a composite profile is not very suitable for use with frames for wall elements, doors or windows.

It is therefore an object of the present invention to avoid the disadvantages of the known, in particular to provide a device and a method of the type mentioned at the outset, which in particular creates a receptacle for various side elements in a simple manner. Furthermore, no protruding elements should make the handling of the composite profile difficult. Then the composite profile should be easy to manufacture and meet high demands in terms of statics and rigidity.

EP 1 510 643 A discloses a composite profile for frames of wall elements, doors or windows with at least two metal profiles arranged at a distance from one another and with metal connecting parts connecting the metal profiles.

According to the invention, these tasks are solved with a composite profile with the features according to claim 1. The composite profile essentially consists of at least two metal profiles arranged at a distance from one another and connecting parts made of metal connecting them. The metal profiles each have opposite end walls and facing end wall sections, to which the connecting parts are fastened, preferably welded, the end wall sections lying on a plane that runs parallel to the corresponding end wall or form an angle of inclination: between 10 ° and 60 ° to the corresponding end wall . A preferred metal profile can, for example, have an end wall and approximately at right angles to it have running sidewalls. An end wall section connects to a side wall. Each connecting part has a side section with end sections. Each connecting part is fastened in the region of the end sections with the end wall sections of the metal profiles resting thereon. The end section of a connecting part can, for example, be angled from the side section such that the end section defines a preferred contact surface with the corresponding end wall section of the metal profile. Of course, it is also conceivable that the end section has a curvature, in particular an arc shape, in cross section. In this case, a merely approximately linear contact zone to the end wall section of the metal profile would be formed. The connecting parts can be arranged offset inwards with respect to a side wall of the metal profiles, as a result of which an indentation for receiving side elements is advantageously created. The connecting parts are preferably arranged in the composite profile in such a way that the end sections are each directed outwards. Fire protection elements, cover strips, seals or fittings are conceivable as side elements. The metal profiles can be designed as open profiles, the side walls of which are advantageously each directed towards one another. In this way, a single-chamber composite profile can be formed. Depending on the field of application, insulation and / or fire protection materials can be arranged in the cavity of the composite profile formed in this way. The end wall sections of the metal profiles can run parallel to one another, the end wall sections of a metal profile preferably each lying on the same plane. Such an arrangement has the advantage that the distance between the metal profiles can be specified in this way. The oblique arrangement of the end wall sections of the metal profiles also ensures that inaccuracies in fit are compensated for when the connecting parts are inserted can be. This can significantly optimize the manufacturing process.

The metal profiles and / or the connecting parts can consist of sheet metal. The profiles can thus be formed in a simple manner by means of a folding and / or bending process. The profiles would be produced particularly advantageously by a roll forming process.

The metal profiles and / or the connecting parts can be made of steel. A composite profile made of steel is characterized by particularly good fire protection properties. Since steel is relatively easy to deform and weld, the composite profile can be manufactured inexpensively. Even higher fire classes could be achieved by designing the profiles from stainless steel. It is particularly advantageous if the metal profiles are made of steel, for example structural steel, and the connecting parts are made of high-quality stainless steel. In this way, the thermal insulation and fire protection properties of the composite profile can be optimized at a relatively low cost.

In a further embodiment, at least one of the metal profiles is a profile which is C-shaped in cross section. Such profiles can be manufactured particularly cheaply. Of course, it is also conceivable that the metal profiles or at least one of the metal profiles is designed as a closed profile. In this case, the two end wall sections of the metal profile would be connected to one another.

The connecting parts can have straight or inclined webs to reduce the heat flow between the metal profiles. This arrangement is characterized by particularly good thermal insulation properties. For example, webs can are formed that openings are provided in a row in the region of the side section of the connecting part, the row running in the longitudinal direction of the composite profile. For example, the webs or openings could be created by processing a sheet with the aid of a punching or laser cutting process.

It is advantageous if end sections adjoin the end sections of the connecting parts, which are preferably approximately aligned with one another. This creates an advantageous space for accommodating side elements, the side elements being partially covered. This means that the side elements cannot be damaged, scratched or detached when handling the profiles. Another advantage of this arrangement is that an additional fixing of side elements to the connecting parts, for example by gluing, is no longer necessary. The end sections could possibly also serve as latching means for latching side elements.

It is particularly advantageous if the end sections each run approximately at right angles to the side section of the connecting part and if the end sections connect approximately at right angles to the end sections. The two end sections of a connecting part can run in the same plane. However, a step-like arrangement of the end sections is also conceivable. Of course, other embodiments of connecting parts are also conceivable instead of angled end and end sections. The connection part can be bent or rounded at its ends in such a way that they define a U-shape. The end section and end section could lie, for example, in cross section on an arc. However, it is also possible that the end section and the end section can define a V-shape.

The end section of the connecting part can extend in the longitudinal direction of the connecting part (or composite profile). A coherent end section designed in this way can be produced in a simple manner from a rectangular long sheet. The end section can alternatively also be formed by a plurality of individual sections, which are arranged in a row running in the longitudinal direction of the connecting part (or composite profile). The individual sections are each separated from one another by cutouts. Uniform distances between the individual sections are preferably provided.

Fire protection elements, cover strips, seals and / or fittings can be arranged in the space delimited by the end sections of the connecting part. By arranging such side elements, the composite profile can be optimally aligned for a specific application or application. Fire protection elements could contain materials that inflate under the influence of heat. Such materials can expand their volume several times at elevated temperature, which results in better sealing of the composite profiles in the event of a fire. A particular advantage of arranging fire protection elements would result in particular in combination with connecting parts with straight or inclined webs.

Fire and / or heat-resistant insulation material can be arranged in the interior of the composite profile formed by the metal profiles and the connecting parts. The fire values can thus be increased additionally. Depending on the purpose of the composite profile, the interior of the composite profile is completely or partially filled with insulation material. The insulation material can be in the case of a composite profile designed as a single-chamber profile for example, extend from the end wall of one of the metal profiles to the end wall of the other metal profile. However, it is also conceivable that insulation material, for example in the form of a fire protection plate, is arranged in the region between the connecting parts. In this case, the end faces of the insulation material would advantageously rest on the end wall sections of the metal profiles. Of course, one could also arrange insulation material within a metal profile. This insulation material would then be delimited by the end wall and by the end wall sections of the metal profile. Of course, several bodies made of different insulation materials could be used for further optimization in the interior of the composite profile.

To produce the composite profiles, the metal profiles and the connecting parts must advantageously be positioned relative to one another in such a way that the end wall sections of the metal profiles abut the end sections of the connecting parts. Due to the manufacturing process, the comparatively long profile components (e.g. 6 m length) may be slightly bent due to residual stresses. The positioning and adaptation of the profile components to each other can be done by applying relatively large forces. In practice, however, it has been shown that it can be advantageous to specifically weaken the connecting parts at certain points in order to increase the adaptability of the connecting parts. This means that less large (pressing) forces are required. For this purpose, the connecting parts can have a plurality of incisions or interruptions arranged in a row. Such an incision is particularly advantageously arranged in the region of a base created by the preferably approximately triangular opening for forming the webs. The production of composite profiles can be made considerably easier in this way, since such connecting parts can compensate for possible inaccuracies in fit without great effort.

Another aspect of the invention relates to a method for producing a composite profile for frames of wall elements, doors or windows. Two metal profiles, each with opposite end walls and facing end wall section and connecting parts with a side section and angled end sections at the ends, the end wall sections lying on a plane that runs parallel to the corresponding end wall or to the corresponding end wall an angle of inclination between 10 ° and 60 ° form, are formed by folding and / or bending processes. The metal profiles and the connecting parts are positioned relative to one another in such a way that the end wall sections of the metal profiles bear against the end sections of the connecting parts. The metal profiles and the connecting parts are then connected to one another by a welding process. In this way, the previously described composite profiles are particularly easy to manufacture.

Figur 1

Ein Querschnitt durch ein erfindungsgemässes Verbundprofil,

Figur 2

einen Querschnitt durch ein Verbundprofil gemäss einem zweiten Ausführungsbeispiel,

Figur 3

einen Querschnitt durch ein Verbundprofil gemäss einem dritten Ausführungsbeispiel,

Figur 4

eine Ausführung eines Verbundprofils gemäss Figur 2 mit Isolationsmaterial,

Figur 5

einen Querschnitt durch einen Verbundprofil gemäss einem alternativen Ausführungsbeispiel,

Figur 6

einen Querschnitt durch ein weiteres Verbundprofil,

Figur 7

eine Seitenansicht eines Verbindungsteils,

Figur 8

eine Seitenansicht des Verbindungsteils gemäss Figur 7 für ein Verbundprofil gemäss Figur 5,

Figur 9

eine Seitenansicht des Verbindungsteils für ein Verbundprofil gemäss Figuren 1 bis 4 sowie 6,

Figur 10a

eine detaillierte Teildarstellung des Querschnitts eines Verbundprofil gemäss einem weiteren Ausführungsbeispiel,

Figur 10b

eine detaillierte Teildarstellung des Querschnitts eines Verbundprofil gemäss einem alternativen Ausführungsbeispiel zu Figur 10a,

Figur 10c

eine detaillierte Teildarstellung des Querschnitts eines Verbundprofil einem weiteren alternativen Ausführungsbeispiel zu Figur 10a,

Figur 11

eine perspektivische Darstellung eines Ausschnitts eines Verbindungsteils,

Figur 12

eine perspektivische Darstellung eines Ausschnitts eines alternativen Verbindungsteils,

Figur 13

eine alternative Seitenansicht eines Verbindungsteils,

Figur 14

eine vergrösserte Darstellung eines Nockens und eines gemäss Figur 13 (Detail B), und

Figur 15

eine alternative Ausführung des Nockens gemäss Figur 14.

Further individual features and advantages of the invention result from the following description of the exemplary embodiments and from the drawings. Show it:

Figure 1

A cross section through a composite profile according to the invention,

Figure 2

3 shows a cross section through a composite profile according to a second exemplary embodiment,

Figure 3

3 shows a cross section through a composite profile according to a third exemplary embodiment,

Figure 4

an execution of a composite profile according to Figure 2 with insulation material,

Figure 5

3 shows a cross section through a composite profile according to an alternative exemplary embodiment,

Figure 6

a cross section through a further composite profile,

Figure 7

a side view of a connecting part,

Figure 8

a side view of the connecting part according to Figure 7 for a composite profile according to Figure 5 ,

Figure 9

a side view of the connecting part for a composite profile according to Figures 1 to 4 as well as 6,

Figure 10a

a detailed partial representation of the cross section of a composite profile according to a further embodiment,

Figure 10b

a detailed partial representation of the cross section of a composite profile according to an alternative embodiment Figure 10a ,

Figure 10c

a detailed partial representation of the cross section of a composite profile to another alternative embodiment Figure 10a ,

Figure 11

1 shows a perspective view of a section of a connecting part,

Figure 12

1 shows a perspective view of a section of an alternative connecting part,

Figure 13

an alternative side view of a connecting part,

Figure 14

an enlarged view of a cam and one according to Figure 13 (Detail B), and

Figure 15

an alternative version of the cam according to Figure 14 .

Figure 1 shows a composite profile designated 1, which consists essentially of two metal profiles 2 and 16 and two connecting parts 3. The metal profiles 2 and 16 arranged at a distance A from one another are designed as open profiles with end wall sections 4 each facing one another. The connection with the connecting parts 3 creates a single-chamber profile 1 with a cavity 10. A connecting part 3 has a side section 5 which bridges the distance A between the metal profiles 2 and 16. At the ends of the connecting part 3, end sections 6 angled at right angles from the side section are provided, the end sections 6 each being directed outwards. As can be seen, the end sections 6 lie against the corresponding end wall sections 4 of the metal profiles 2 and 16 and are welded to them here. Of course, other types of fastening, for example screw or rivet connections, could also be used.

As can be seen, the connecting parts 3 are arranged offset inwards relative to the side walls 18 of the metal profiles 2 and 16, as a result of which a depression is formed. The end wall sections 4 are each directed outwards. In the recess created in this way, side elements such as fire protection elements, cover strips or seals can be arranged in an advantageous manner. Fittings, for example striking plates or a lock, are also suitable.

The metal profiles 2 and 16 and the connecting parts 3 are preferably made of steel, as a result of which the respective profiles can be shaped and welded to one another in a simple manner. The metal profile 2 has a C-shape in cross section. The metal profile 16 is also essentially C-shaped. For use as a frame element for doors or windows, however, a folded end is provided on the end wall 16.

The connecting parts 3 according to Figure 2 differ from FIG. 1 in that end sections 7, which face each other, are connected to end sections 6. In the space thus delimited by the end sections 7 of the connecting part 3, a fire protection element 9, for example a fire protection strip that inflates when exposed to heat, is arranged. The fire protection elements or other side elements can be held in the connecting part 3 by the end sections 7 without additional fastening means (such as adhesive connections). Depending on the design of the side elements, the end sections 7 can also be used as lugs for snap-in or snap connections. In Figure 2 it can also be seen that webs 12 are provided in the region of the side sections 5 of the connecting parts 3 (cf. below Figures 7 and 9 ).

Figure 3 shows a composite profile 1, in the interior or cavity 10 of which an insulating material 11 is arranged. The insulation material 11 is preferably made of fire and / or heat resistant Materials. In the present case, the insulation material 11 is rectangular, wherein it extends from an end wall 17 of the metal profile 2 to the opposite end wall 17 of the metal profile 16. Laterally, the insulation material 11 is held in position by the connecting parts 3. The side surfaces of the insulation material 11 lie on beads 14 of the connecting parts (cf. following Figures 7 and 9 ). In addition (or alternatively), the free ends of the end wall sections 4 of the metal profiles 2 and 16 could be used for positioning the insulation material 11. In the space 8 delimited by the end sections 7 of the connecting parts 3, of course, here too - as in FIG Figure 2 shown - side elements can be arranged.

How out Figure 4 emerges, the insulation material 11 can be arranged in the area defined by the connecting parts 3 in the cavity 10 of the composite profile 1. For this purpose, the free ends of the end wall sections 4 protrude inwards with respect to the connecting parts 3, as a result of which the end faces of the insulation material can rest against or rest on the end wall sections 4. Of course, it is conceivable to additionally or alternatively arrange insulation materials in the area defined by the metal profiles 2 or 16. The insulation materials can consist of the same or different types of material as the insulation material 11.

In the previously shown composite profiles 1, the end wall sections 4 of the metal profiles 2 and 16 each run parallel to one another. How Figure 5 shows, the end wall sections 4 can also be arranged obliquely. The sloping end wall sections 4 form the free end of the metal profiles. Between the side walls 18, which run at right angles to the end walls 17 and the end wall sections 4, there is a second end wall section 20 arranged. This end wall section 20 lies against the side wall 18 and runs approximately parallel to the latter. This creates a fold. This can be made by turning / flanging. How out Figure 5 emerges, the connecting part 3 cannot be placed laterally on the end wall sections 4. Rather, the connecting part 3 must be inserted or inserted in the longitudinal direction from one end of the metal profiles held at a distance A. The end wall sections 4 lie on a plane which forms an inclination angle α with planes running parallel to the corresponding end wall 17. In the embodiment according to Figure 5 the angle is about 30 °. Consequently, the end sections 6 of the connecting parts 3 are angled by 60 ° with respect to the side section 5. With regard to the weldability and stability of the composite profile, the angle α is between 10 ° and 60 °, preferably between 20 ° and 45 °. In the Figure 5 side elements 9 fastened to the connecting parts 3 are designed such that the outer surface of the side element lies on the level of the side walls 18 of the metal profiles 2 and 16.

Figure 6 shows a composite profile 1, in which the metal profiles 2 and 16 are designed as closed profiles. The end wall sections are connected to one another in such a way that a closed inner end wall 19 is formed. An insulation material 11 is arranged between the end walls 19 and the connecting parts 3.

As shown in the side view of the connecting part 3 Figure 7 emerges, the connecting part is designed as a component extending in the longitudinal direction of the composite profile, for example a sheet of steel, but particularly preferably made of stainless steel. A composite profile with metal profiles made of steel and connecting parts made of stainless steel is particularly good Thermal insulation and fire protection properties. The connecting parts 3 have obliquely extending webs 12, which are made by making openings 13 arranged in a row in the connecting part in the region of its side section 5. Further is in the Figures 7 8 and 9 that a web 12 has beads 26 directed inwards.

As the Figures 10a and 10b show, the ends of the side section 5 do not necessarily have to be formed by bending. The connecting part 3 is bent at its ends, whereby a U-shape is defined. The end section 6 and the end section 7 lie on an arc. In this case, a merely approximately linear contact zone to the end wall section of the metal profile would be formed. This can have advantages when welding with the metal profiles. In Figure 10c end section 6 and end section 7 define a V-shape.

In Figure 11 the end section 7 of the connecting part 3 extends in the longitudinal direction thereof. Instead of a contiguous forehead section, this can - how Figure 12 - Also be formed by a plurality of individual sections 21 which are each separated from one another by cutouts 22. The individual sections 21 are arranged in a row running in the longitudinal direction of the connecting part. The approximately rectangular individual sections 21 are advantageously arranged at equal distances from one another.

Figure 13 shows a variant of the connecting part according to Figure 7 . Obviously, the connecting part 3 has cams 23 for fixing insulation material arranged in the cavity. Such cams are for example in the EP-A-1 510 643 described. How out Figure 14 there is a recess 25 in the area of a cam 23 to facilitate the deformation of the cam provided inside. Furthermore, an incision or a gap 24 is assigned to each cam 23. Through the incision or gap 24, the connecting part 3 is held together in the area of the cam only by this. Of course, it is also conceivable to provide incisions or gaps without cams. With the help of these incisions, the connecting part can be easily fitted between the metal profiles. Any inaccuracies in fit can be compensated for without applying large pressing forces. These would preferably also - as in Figure 13 shown - alternately or alternately arranged above and below in the region of a base 27 of an approximately triangular opening 13. A further recess 26, advantageously in the form of a circular hole, is provided between the recess 25 and the end section 6. How Figure 15 shows, the recess 25 can be designed as a circular hole. This is compared to Figure 14 further offset to the outside, whereby the cam 23 is fully formed.

Claims (11)

1. Composite profile (1) for frames of wall elements, doors or windows, comprising at least two metal profiles (2, 16) arranged at a distance (A) from one another and comprising connecting parts (3) which are made of metal and connect the metal profiles, wherein the metal profiles (2, 16) each have opposite end walls (17) and end wall portions (4) directed toward one another, to which the connecting parts (3) are attached, preferably welded, wherein the end wall portions (4) lie on a plane which extends parallel to the corresponding end wall (17) or forms an inclination angle (α) of between 10° and 60° with respect to the corresponding end wall (17), and wherein each connecting part (3) has a lateral portion (5) having end portions (6) which are angled or are provided with a bend in cross section for defining a contact surface or linear contact zone with respect to the corresponding end wall portion (4), wherein, in the region of the end portions (6), the connecting part (3) is attached to the adjacent end wall portions (4) of the metal profiles (2, 16).
2. Composite profile according to claim 1, characterized in that the metal profiles (2, 16) and/or the connecting parts (3) consist of sheet metal.
3. Composite profile according to either claim 1 or claim 2, characterized in that the metal profiles (2, 16) and/or the connecting parts (3) consist of steel.
4. Composite profile according to any of claims 1 to 3, characterized in that at least one of the metal profiles (2, 16) is a profile that is C-shaped in cross section.
5. Composite profile according to any of claims 1 to 4, characterized in that the connecting parts (3) have straight or obliquely extending strips (12) for reducing the heat flow between the metal profiles (2, 16).
6. Composite profile according to any of claims 1 to 5, characterized in that terminal portions (7) adjoin the end portions (6) of the connecting parts (3), which terminal portions are preferably directed approximately toward one another.
7. Composite profile according to claim 5, characterized in that the end portions (6) each extend approximately perpendicularly to the lateral portion (5) of the connecting part (3), and in that the terminal portions (7) adjoin the end portions (6) approximately perpendicularly.
8. Composite profile according to either claim 6 or claim 7, characterized in that at least one of the end portions (6) of the connecting parts (3) is formed by a plurality of individual portions (21) which are arranged in a row extending in the longitudinal direction of the connecting part.
9. Composite profile according to any of claims 6 to 8, characterized in that lateral elements (9) are arranged in the space (8) delimited by the terminal portions (7) of the connecting part (3), the lateral elements being selected from the group of cover strips, seals, fittings or fire protection elements, in particular fire protection elements which expand when exposed to heat.
10. Composite profile according to any of claims 1 to 9, characterized in that a fire and/or heat-resistant insulation material (11) is arranged in the interior (10) formed by the metal profiles (2, 16) and the connecting parts (3).
11. Method for producing a composite profile (1) for frames of wall elements, doors or windows from two metal profiles (2, 16) which each have opposite end walls (17) and end wall portions (4) directed toward one another and connecting parts (3) which connect said end wall portions and have a lateral portion (5) and angled end portions (6) at the ends of said lateral portion, in particular according to any of claims 1 to 10, wherein the end wall portions (4) lie on a plane which extends parallel to the corresponding end wall (17) or forms an inclination angle (α) of between 10° and 60° with respect to the corresponding end wall (17), wherein the metal profiles (2, 16) and the connecting parts (3) are each formed by folding and/or bending processes, and wherein the metal profiles (2,16) and the connecting parts (3) are positioned such that the end wall portions (4) of the metal profiles (2, 16) abut the end portions (6) of the connecting parts (3), and the metal profiles (2, 16) and the connecting parts (3) are connected to one another by means of a welding process.

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