DK2746487T3

DK2746487T3 - angle Profile

Info

Publication number: DK2746487T3
Application number: DK13194639.4T
Authority: DK
Inventors: Heiner Willerscheid
Original assignee: Protektorwerk Florenz Maisch Gmbh & Co Kg
Priority date: 2012-12-21
Filing date: 2013-11-27
Publication date: 2019-03-18
Also published as: DE102012224309A1; EP2746487B1; PL2746487T3; EP2746487A3; ES2721351T3; EP2746487A2

Description

The present invention relates to a bracket section comprising two section limbs of which each comprises an outer surface and an inner surface as well as a free longitudinal edge connecting the outer surface and the inner surface to one another, said section limbs being connected to one another along a corner longitudinal edge, wherein the two outer surfaces of the section limbs are connected to one another via an outer connection section and the two inner surfaces of the section limbs are connected to one another via an inner connection section; wherein, in one or both section limbs, the material thickness of the section limb is greater in the region of the corner longitudinal edge than in the region of the section limb adjoining the corner longitudinal edge; and wherein, in one or both section limbs, the material thickness of the section limb is greater in the region of its free longitudinal edge than in the region of the section limb adjoining the free longitudinal edge. Furthermore, the outer connection section defines an external radius in cross-section and the inner connection section defines an inner radius of the bracket section in cross-section, with the inner radius being larger than the external radius.

Such bracket sections are, for example, used as plaster rails or as mesh corner brackets in external thermal insulation composite systems (ETICS). Such bracket sections are, for example, applied to corners of masonry, to ETICS or the like and are also plastered to produce edge protection. Since frequently only very small plaster thicknesses are possible, for example at most 3 mm, the corner brackets have to be correspondingly thin in order to disappear completely in the plaster layer after the plastering. Furthermore, the manufacturing costs of these bracket sections are predominantly determined by the material costs such that the bracket sections should also be configured with as little material as possible, that is as thin as possible, in the sense of a reduction of the manufacturing costs. However, a stability which is thereby reduced stands in the way of a correspondingly thin design of the bracket sections. In particular since the bracket sections as a rule have to be attached to an edge which extends in a perpendicular manner and which can have a height of a plurality of meters, the bracket sections have to have a minimum stiffness to enable such a perpendicular installation. A bracket section in accordance with the preamble of claim 1 is known from DE 296 13 293 U1. Furthermore, DE 197 47 602 A1 and DE 44 26 099 A1 show bracket sections having greater material thicknesses in the region of the corner longitudinal edges than in the regions of the section limbs adjoining the corner longitudinal edges.

It is an object of the present invention to configure a bracket section of the initially named kind which nevertheless has the necessary stiffness in a very thin manner of construction.

Starting from a bracket section of the initially named kind, this object is satisfied in that the material thickness of the section limb is greater in the region of the corner longitudinal edge and of its free longitudinal edge than in the region adjoining the free longitudinal edge and the corner longitudinal edge.

Whereas in bracket sections which are, for example, manufactured by a corresponding bending over of a uniformly thick starting material, the material thickness of the section limbs is typically of the same size in the region of the corner longitudinal edge as in the region of the section limbs adjoining the corner longitudinal edge, the material thickness of one or both section limbs is directly increased in the region of the corner longitudinal edge in accordance with the invention. It has been found in accordance with the invention that an increased stiffness with an unchangeably small thickness of the section limbs can be achieved by such an increase of the material thickness in the region of the corner longitudinal edge. The same effect results when the material thickness of the section limbs is selected as greater in the region of its free longitudinal edges than in the region of the section limb adjoining the free longitudinal edges. This means that the free longitudinal edges are formed as thickened material portions, wherein the thickened material portions are not produced by corresponding bends of the free longitudinal edges, but rather by real thickened portions of the material. This can, for example, take place by a corresponding upsetting of the longitudinal edges, by another molding on of the thickened portions, by corresponding extrusion, by ejection (ejection molding), by pultrusion, by stamping processes such as roller marking processes or also by extrusion processes.

In accordance with the invention, in particular in extruded sections, the material thickness of the section limb is greater in the region of the corner longitudinal edge and of its free longitudinal edge than in the region adjoining its free longitudinal edge and its corner longitudinal edge.

In accordance with the invention, it has thus been found that it is sufficient if the corresponding thickened material portion is only provided at the longitudinal edges while the remaining region of the section limbs can be relatively thin up to the connection sections in the region of the corner longitudinal edge. It has been found in accordance with the invention that an increased stiffness is achieved over the total length of the bracket section by the formation of thickened portions at the free longitudinal edges, said increased stiffness stiffening the total bracket section even if the remaining region of the section limbs has a thinner design.

In accordance with the invention, the outer connection section defines an external radius in cross-section and the inner connection section defines an inner radius of the bracket section in cross-section, with the inner radius being larger than the external radius. Whereas the external radius is typically larger than the inner radius in bracket sections which are, for example, manufactured by a corresponding bending over of a uniformly thick starting material, the exact opposite applies in the bracket section in accordance with the invention. It has been found in accordance with the invention that the desired thickened material portion in the region of the corner longitudinal edge and thus an increased stiffness with an unchangeably small thickness of the section limbs can be achieved by the opposite selection of the radii with respect to conventional bracket sections.

In this respect, the inner radius and the external radius can also comprise the extreme values "infinite" for the inner radius (formation of a planar connection surface connecting the inner surfaces of the section limbs) and "zero" for the external radius (formation of a sharp corner edge). A higher stiffness is, however, achieved by forming the inner radius as smaller than infinity, that is, therefore by forming an actual rounded portion. In general, the connection surfaces can also be formed as polygon surfaces, i.e. from a plurality of planar surfaces each adjoining one another at an angle different from 180°. In this respect, the surfaces can generally also be formed as curved surfaces. The external radius can generally also adopt the extreme value "infinite"; this means that the outer surfaces of the section limbs are connected to one another via a planar, obliquely extending connection surface. It is only essential in this respect that the material thickness of at least one of the section limbs is greater in the region of the corner longitudinal edge than in the region of the section limb adjoining the corner longitudinal edge. A particularly increased stability is achieved when both solutions are combined with one another; this means that the corresponding thickened material portions are provided at the longitudinal edges and also that the inner radius is larger than the external radius in the region of the corner longitudinal edge. In this respect, the material thickness is in each case to be understood as that thickness of the section limb which the section limb has in cross-section perpendicular to its longitudinal direction.

In accordance with an advantageous embodiment of the invention, the inner radius is at least approximately 1.5 times, preferably at least approximately twice, advantageously at least approximately 2.5 times, larger than the external radius.

An ideal compromise between a stiffness increase and material consumption is achieved by these values.

The material thickness of the section limb is preferably at least approximately 1.3 times, preferably at least approximately 1.5 times, advantageously at least 1.67 times, greater in the region of the corner longitudinal edge and/or of its free longitudinal edge than in the region of the section limb adjoining the corner longitudinal edge or the free longitudinal edge. These values are also optimized values which represent a compromise between a higher stiffness and material consumption.

In accordance with a further advantageous embodiment of the invention, the material thickness of the section limb is greater in the region of the corner longitudinal edge than in the region of one or both section limbs adjoining the free longitudinal edge. Such an increased material thickness in the region of the corner longitudinal edge is in particular achieved in that the size ratios of the inner and external radii with respect to one another which are indicated above are produced.

The material thickness of the section limb is preferably substantially of the same size in the region of its free longitudinal edge as the material thickness of the section limb in the region of the corner longitudinal edge. A uniform contact of the bracket section with a corner to be protected and a balanced stiffness over the total bracket section are thereby achieved.

In accordance with a further advantageous embodiment of the invention, an inwardly disposed hollow space extending in the longitudinal direction of the bracket section is formed in the region of the corner longitudinal edge. It has been found in accordance with the invention that the provision of an inner radius which is larger than the external radius is predominantly relevant for the stiffness of the bracket section in the region of the corner longitudinal edge and that it is not important that the material in the region of the corner longitudinal edge is a solid material in this respect. A further material reduction in the region of the corner longitudinal edge can thus be achieved without a substantial influence on the stability of the bracket section.

The cross-section of the hollow space is preferably adapted to the contour of the bracket section in the region of the corner longitudinal edge. The cross-section of the hollow space can thus, for example, have an L-shaped contour, with an external radius of this L-shaped contour being smaller than an inner radius of the L-shaped contour.

In accordance with a further preferred embodiment of the invention, the outer surfaces and the inner surfaces of one or both section limbs each extend substantially in parallel with one another at least regionally, in particular over their substantial portion. The outer surfaces and inner surfaces are only not arranged in parallel with one another regionally at the thickened portions in the region of the free longitudinal edges or in the region of the corner longitudinal edge in order to produce the corresponding thickened portions or the indicated radii ratios. In this respect, a step which is in particular chamfered is advantageously formed in a transition region between the corner longitudinal edge and the inner surface of one or both section limbs. The inner surface of the section limb can be connected via this step to the larger radius of the inner connection section. The step can, for example, also extend perpendicular to the inner surface or can have a curvature. It is generally also possible that the outer and inner surfaces of the section limbs are not formed as extending in parallel with one another, but rather extending obliquely with respect to one another and that the transition between the inner surface of the section limb and the larger radius of the inner connection section is thereby, for example, formed as extending continuously. In addition, the transition region can be omitted completely at one or both section limbs if the material thickness of the section limb or section limbs is of the same size in the region of the corner longitudinal edge as in the region of the respective section limb adjoining the free longitudinal edge.

In accordance with an advantageous embodiment of the invention, one or more apertures are formed in one or both section limbs. A further material reduction can thereby be achieved, on the one hand, and these apertures can, for example, enable a better plaster fixation of the bracket section, on the other hand, in that plaster can pass through the apertures.

The bracket section can preferably comprise plastic, in particular PVC, for example fiber-reinforced plastic, or metal, in particular aluminum, zinc-coated steel or stainless steel. The bracket section can, for example, be extruded from plastic or aluminum to enable a simple manufacture.

In accordance with a further advantageous embodiment of the invention, areal side flanges, in particular in the form of a reinforcement fabric, adjoin one or both section limbs. These side flanges can serve for a further fastening of the bracket section in the plaster layer.

The cross-sectional length of the thickened material portion in the region of the free longitudinal edge preferably amounts to between approximately 5% and 20%, in particular between approximately 10% and 15%, of the cross-sectional length of the section limbs. An optimized compromise between stability and material consumption is achieved by this embodiment.

Further advantageous embodiments of the invention are set forth in the dependent claims.

The invention will be described in more detail in the following with reference to embodiments; there are shown in these:

Fig. 1 a perspective representation of a bracket section configured in accordance with the invention;

Fig. 2 a cross-sectional view of the bracket section in accordance with Fig. 1;

Fig. 3 a cross-sectional view of a further bracket section configured in accordance with the invention;

Fig. 4 a perspective part view of a bracket section in accordance with the invention configured as an end section; and

Fig. 5 a further embodiment of the invention.

Fig. 1 shows a bracket section 1 comprising two section limbs 2, 3 which each have a free longitudinal edge 4, 5 and which are connected to one another along a corner longitudinal edge 6 to form the bracket section 1. The two section limbs 2, 3 include an angle of exactly or approximately 90° in the embodiment shown. The section limbs can generally also include a different angle, wherein the angle can be formed both as an acute angle and as an obtuse angle. A plurality of apertures 7 are formed in the section limbs 2, 3, said apertures repeating in the longitudinal direction and being formed as oval or in the form of elongate holes. The apertures can generally also have a different shape. They can e.g. be formed as round, triangular, hexagonal or in another suitable manner or they can have mixed forms. The apertures 7 are in this respect arranged in the longitudinal direction in two rows which are disposed next to one another and which are each offset from one another by half a hole length. However, the arrangement of the apertures can be modified as desired. Furthermore, the apertures can also be omitted completely or can be formed in only one of the two section limbs.

The section limbs 2, 3 are formed as thickened in the region of their free longitudinal edges 4, 5; this means that the material thickness of the section limbs 2, 3 is greater in the region of their free longitudinal edges 4, 5 than in regions 8, 9 of the section limbs 2, 3 which adjoin the free longitudinal edges 4, 5 and in which the apertures 7 are formed. Materially integral thickened portions 17, 18 are thereby formed in the region of the free longitudinal edges 4, 5.

The section limbs 2, 3 each have an outer surface 10, 11 and an inner surface 12, 13, wherein the inner surface 12,13 and the outer surface 10, 11 of the respective section limb 2, 3 extend in parallel with one another such that the section limbs 2, 3 have a substantially constant thickness in their regions 8, 9 - except for the regions of the apertures 7.

As can in particular be seen from Fig. 2, the outer surfaces 10, 11 of the section limbs 2, 3 are connected to one another via an outer connection section 14 which defines an external radius ra of the bracket section 1 in cross-section. In a corresponding manner, the two inner surfaces 12, 13 of the section limbs 2, 3 are connected to one another via an inner connection section 15 which defines an inner radius n of the bracket section 1 in cross-section. As can be seen from Figs. 1 and 2, the inner radius n is in this respect larger than the external radius ra such that, due to the different radii, the material of the bracket section 1 is already considerably thicker in the region of the corner longitudinal edge 6 than in the regions 8, 9 of the section limbs 2, 3. The material thickness is in this respect to be understood as the thickness of the section limbs 2, 3 in each case perpendicular to their longitudinal direction (in the cross-sectional view shown) such as is characterized by double arrows 25 in Fig. 2. This also applies to other use of the term "material thickness" within the framework of this application. Furthermore, a transition region is provided between the inner connection section 15 and the respective inner surface 12, 13 of the section limbs 2, 3, which transition region is formed as a chamfered step 16 and by which an additional thickened material portion in the region of the corner longitudinal edge 6 of the bracket section 1 is achieved.

The height of the respective step 16 measured perpendicular to the respective inner surface 12, 13 is in this respect just as large as the height of the thickened portions 17, 18 which projects beyond the respective inner surface 12, 13 in a perpendicular manner. In other words, the material thickness of the section limbs 2, 3 is substantially of the same size in the region of the free longitudinal edges 4, 5, i.e. in the region of the thickened portions 17, 18, as the material thickness of the section limbs 2, 3 in the region of the corner longitudinal edge 6. It is thereby achieved that, when the bracket section 1 is placed at a corner to be protected, the thickened portions 17, 18 and the inner connection section 15 of said bracket section establish contact in a uniform manner such that the outer surfaces 10, 11 of the bracket section 1 extend in parallel with the wall portions forming the corner.

It is furthermore indicated in Fig. 2 that side flanges in the form of reinforcement fabrics 19, 20 can be fastened to, for example, adhesively bonded to, sewn to or extruded onto the outer surfaces 10,11, with a secure plastering of the bracket section 1 being possible via said side flanges.

Fig. 3 shows a modified bracket section T which substantially corresponds to the bracket section 1 in accordance with Fig. 1. The same or similar elements are therefore provided with the same reference numerals as in Fig. 1.

In a modification of the bracket section 1, one of the thickened portions 17' in the bracket section 1' is by way of example formed such that it does not only project over the inner surface 12, but additionally also over the outer surface 10. This can, for example, take place by an upsetting with a simultaneous heating or during an extrusion process. The thickened portion 18 can naturally also be formed in the same shape as the thickened portion 17'.

Furthermore, the bracket section 1' in the region of the corner longitudinal edge 6 is not configured as a solid material, but an inwardly disposed hollow space 21 extending in the longitudinal direction of the bracket section 1' is rather formed between the outer connection section 14 and the inner connection section 15. The outer contour of the hollow space 21 is in this respect adapted to the outer contour of the bracket section 1' in the region of the corner longitudinal edge 6. The hollow space 21 in particular has an angular cross-section, with the external radius of the angular cross-section also being smaller than the inner radius of the angular cross-section here.

Despite the hollow space 21, the bracket section 1' substantially has the same stiffness as the bracket section 1 such that the same stiffness can be achieved with a reduced material requirement. Within the framework of the present application, it is thus irrelevant for the material thickness if cut-outs are provided in the interior of the material. The material thickness is in each case to be understood the (perpendicular) spacing between the outer and inner surfaces of the section limb.

Whereas the reinforcement fabrics 19, 20 are formed in two parts in the embodiments shown, a single-part reinforcement fabric can also be provided which is led over the corner longitudinal edge 6. Furthermore, the two reinforcement fabrics 19, 20 or the single-part reinforcement fabric can also be fastened to the inner sides 12,13 instead of to the outer sides 10, 11 of the bracket sections 1,1'.

Figs. 4 and 5 show bracket sections 22, 23 in accordance with the invention which are configured as end sections. In this respect, the same or similar elements are provided with the same reference numerals as in Figs. 1 to 3.

Unlike the previously described bracket sections, in the bracket section 22 in Fig. 4, only the section limb 2 is provided with the thickened portion 17 at its free longitudinal edge 4, whereas the free longitudinal edge 4 of the section limb 3 does not have a thickened portion, but rather forms a smooth end edge. This can, for example, be sensible if the bracket section is configured as an end bracket in which only the section limb 2 is plastered; the section limb 3 in contrast forms a visible end cover. The section limb 3 can in this respect in particular have a larger thickness throughout than the section limb 2 to be plastered whose thickness is restricted by the thickness of the plaster to be applied.

As is likewise shown by way of example in Fig. 4, the apertures 7 can be omitted in the section limb 2. Generally, corresponding apertures 7 can, however, also be provided in end brackets such as can e.g. be seen from Fig. 5. It is furthermore shown in Fig. 4 that the transition between the inner connection section 15 and the inner surface 13 of the section limb 3 can also have a two-step or multi-step design. In principle, this also applies to the transition between the inner connection section 15 and the inner surface 12 of the section limb 2 and to all the embodiments of the invention. In addition, one or both transitions can generally also be formed in a continuous manner.

It can be seen from the representation of a bracket section 23 forming a further end bracket shown in Fig. 5 that the free longitudinal edge 4 of the section limb 3 forming the end cover can also be formed as a bend 24 in a conventional manner, said bend in particular extending over the total length of the bracket section 23. A visually appealing end with respect to the masonry or to the ETICS is achieved by the bend 24. In a configuration as an end section, the respective section limbs 2 to be plastered can, as described above, naturally also be provided with a reinforcement fabric in order to improve the plaster fixation.

Reference numeral list 1,1' bracket section 2 section limb 3 section limb 4 free longitudinal edge 5 free longitudinal edge 6 corner longitudinal edge 7 apertures 8 region of the section limb 2 9 region of the section limb 3 10 outer surface 11 outer surface 12 inner surface 13 inner surface 14 outer connection section 15 inner connection section 16 chamfered steps 17,17' thickened portions 18 thickened portion 19 reinforcement fabric 20 reinforcement fabric 21 hollow space 22 bracket section 23 bracket section 24 bend 25 double arrows

Claims

An angular profile with two profile legs (2, 3), each comprising an outer surface (10, 11) and an inner surface (12, 13), and a free longitudinal edge (4, 5) connecting the outer (10, 11) and the inner surface (12, 13) with each other and connected to one another along a corner-longitudinal edge (6), the two outer surfaces (10, 11) of the profile legs (2, 3) being connected to each other via a the outer connecting section (14) and the two inner faces (12, 13) of the profile legs (2, 3) are connected to each other via an inner connecting section (15), with one or both of the profile legs (2, 3) of the profile legs ( 2, 3) material thickness in the area of the corner-length edge (6) is greater than in the area (8, 9) of the profile leg (2, 3) adjacent to the corner-length edge (6), on both profile legs (2, 3) the material thickness of the profile leg (2, 3) in the region of the free longitudinal edge (4, 5) is greater than in the region area (8, 9) of the profile leg (2, 3) refers to the free longitudinal edge (4, 5) with the outer connecting section (14) of the cross section defining an outer radius (ra) and the inner connecting section (15) of the cross section defining an inner radius (n) of the angular profile (1,1 ', 22 , 23), the inner radius (n) being greater than the outer radius (ra), characterized in that the material thickness of the profile leg (2, 3) in the area of the corner longitudinal edge (6) and the free longitudinal edge (4, 5) is greater than in the area (8,9) adjacent to the free longitudinal edge (4, 5) and the corner-longitudinal edge (6).

An angular profile according to claim 1, characterized in that the inner radius (n) is at least approx. 1.5 times, preferably at least approx. 2 times, advantageously at least approx. 2.5 times larger than outer radius (ra).

An angular profile according to claim 1 or 2, characterized in that the material thickness of the profile leg (2, 3) in the area of the corner longitudinal edge (6) and / or the free longitudinal edge (4, 5) is at least approx. 1.3 times, preferably at least approx. 1.5 times, advantageously at least 1.67 times larger than that in the region (8, 9) of the profile leg (2, 3) adjacent to, respectively. the corner longitudinal edge (6) or the free longitudinal edge (4, 5).

An angular profile according to at least one of the preceding claims, characterized in that the material thickness of the profile leg (2, 3) in the region of the corner-length edge (6) is greater than in the region (8, 9) of one or both profile legs ( 2, 3) adjacent to the free longitudinal edge (4, 5).

An angular profile according to at least one of the preceding claims, characterized in that the material thickness of the profile leg (2, 3) in the region of the free longitudinal edge (4, 5) has substantially the same thickness as the material thickness of the profile leg (2, 3). the area with the corner-length edge (6).

Angular profile according to at least one of the preceding claims, characterized in that in the region of the corner-length edge (6), an internal cavity (21) extending in the longitudinal direction of the angular profile (1 ', 22, 23) is provided. .

Angular profile according to claim 6, characterized in that the cross-section of the cavity (21) is adapted to the outer and / or inner contour of the angular profile (1 ', 22, 23) in the area of the corner-length edge (6).

An angular profile according to at least one of the preceding claims, characterized in that the outer (10, 11) and inner surfaces (12, 13) of one or both profile legs (2, 3) at least regionally, in particular over a substantial portion. , runs essentially parallel to one another.

An angular profile according to at least one of the preceding claims, characterized in that a particularly sloped step is formed in the transition area between the corner-length edge (6) and the inner surface (12, 13) of one or both profile legs (2, 3). (16).

Angular profile according to at least one of the preceding claims, characterized in that one or more breakthroughs (7) are made in one or both profile legs (2, 3).

Angular profile according to at least one of the preceding claims, characterized in that the angular profile (1, 1 ', 22, 23) is made of plastic, in particular of PVC, or of metal, especially of aluminum, galvanized steel or stainless steel. .

Angular profile according to at least one of the preceding claims, characterized in that flat side flanges are bounded against one or both profile legs (2, 3), in particular in the form of reinforcing web (19, 20).

An angular profile according to at least one of the preceding claims, characterized in that the cross-sectional length of the material thickness (17, 17 ', 18) in the region of the free longitudinal edge (4, 5) is between approx. 5% to 20%, especially between approx. 10% and 15% of the cross-sectional length of the profile leg (2, 3).