Sealing profile and mullion-transom structure The present invention relates to a sealing profile for a mullion-transom structure according to the preamble of claim 1. EP 2 444 566 A2 discloses an attachment seal for a mullion-transom structure in which a central section can be fixed to a screw groove of a mullion or tran-
som. The attachment seal has several sealing strips arranged one above the other on opposite sides, which can be removed in the area of a junction. This allows drainage to take place via a drainage channel between a sealing strip and the central section from a transom to a mullion. The bottom of the drainage channel on the mullion is arranged in a different plane to the bottom of a drain- age channel on the transom. This means that different sealing profiles must be provided when installing a mullion-transom structure. Although this change of levels ensures reliable drainage, it is complex to install due to the different seal- ing profiles. DE 299 15 574 discloses a facade with a sealing profile on a screw groove of a support profile. The sealing profile has two sealing strips on opposite sides, which are connected to a central section around the screw channel. It is therefore the object of the present invention to provide a sealing profile and a mullion-transom structure which ensure reliable drainage at a junction point of a mullion-transom structure and enable simple installation. This object is solved with a sealing profile with the features of claim 1 anda mullion-transom structure with the features of claim 4. The sealing profile according to the invention comprises a central section which is U-shaped in cross-section and can be mounted on a screw groove of a mul- lion or transom, with a first web and a second web, the first web being con- nected to a first sealing strip which can be supported on the mullion or transom. On each limb, a second web projects substantially perpendicularly from the limb, which is connected to a second sealing strip, so that drainage can be car- ried out along the second strip, which forms the bottom of a drainage channel, in the region of a junction point.
The two webs, which are each connected to a sealing strip, can be provided with notches on the first sealing strip of the first sealing profile and the second sealing strip of the second sealing profile, particularly at junctions, which en-
sures effective installation and reliable drainage.
The first sealing strip and the second sealing strip can only be connected to each other indirectly via the webs, so that the sealing strips, which can be positioned at a distance, can be easily cut into.
This makes it easy to cut into one of the two sealing strips at a junction using a tool.
According to the invention, the first web is connected to the limb or the second web on the side facing away from the first sealing strip and can be easily sepa- rated together with the first sealing strip to produce a recess.
In a first embodiment according to the invention, the first web and the second web are connected to one another via a connecting web, wherein the connect- ing web, the first and second webs and a section of the limb enclose at least one hollow chamber.
This gives the sealing profile increased dimensional sta- bility in this area.
Alternatively, the first web can be supported together with the second web according to a second embodiment according to the invention via at least one supporting projection.
Such a supporting projection can enclose at least one hollow chamber with the first and second web.
The two sealing strips can be spaced apart by the supporting projection without destroying the con- necting web in order to cut into one of the two sealing strips in the region of a junction.
A sealing web is preferably arranged between the first sealing profile and the sec- ond sealing profile.
The cross-section of the sealing web can preferably be rectan- gular, with the sealing web optionally being integral with the first or second sealing strip.
This sealing strip can be removed at a junction point, for example to insert a transom end piece in the area of the sealing web in order to support an end sec- tion of the second sealing strip via the transom sealing piece.
Preferably, the sealing strips have a greater thickness than the webs, with the first sealing strip projecting towards the mullion or transom from the first web and the second sealing strip projecting in the opposite direction from the sec- ond web.
The second web thus forms the bottom of a groove between the sec- ond sealing strip and the limb of the central section.
The first web is preferably aligned substantially parallel to the second web and arranged at a small dis-
tance, for example less than 8 mm, for example between 1 mm and 6 mm.
The sealing profile is preferably used in a mullion-transom structure or transom- transom structure, whereby the mullions and transoms can be made of ex-
truded aluminum profiles, plastic profiles, steel profiles or composite materials,
for example a wooden construction with a top profile or a steel construction with a top profile.
A first sealing profile is fixed to the mullion and a second sealing profile is fixed to the transom, which are preferably identical in cross-section.
According to the invention, the second web of the second sealing profile on the transom is arranged essentially in the same plane as the second web on the first sealing profile on the mullion.
As a result, a common sealing plane is formed by the second webs on the transoms and mullions, which lies substan-
tially in one plane over the entire mullion-transom structure.
This eliminates the need to provide different sealing profiles, which provide different sealing levels for the drainage.
Preferably, the second sealing profile is cut in at an end section projecting to-
wards the mullion, with the first sealing strip and the first web being removed in the area of the end section.
In addition, at a junction point, the first sealing pro- file can have a recess on the second sealing strip, into which the end section of the first sealing profile is inserted.
This allows a drainage channel, which is formed by a groove through the central section, the second web and a wall of the second sealing strip, to be guided to a drainage channel on the further seal- ing profile.
Optionally, the end section on the second sealing profile can at least partially overlap the second web on the first sealing profile on the mullion.
Due to the elastic design of the sealing profile, the second web of the second seal- ing profile can seal against the second web of the first profile and ensures a re-
liable seal even in the area of a junction.
The overlap can be between 1 mm and 4 mm in the longitudinal direction of the sealing strip, for example.
Option- ally, the second web on the first sealing profile can also be arranged to butt against the second web of the second web of the second sealing profile.
To support the second sealing profile on the transom in the region of a junction, in particular an end section, a transom sealing piece can be inserted into the re- cess on the first sealing profile, in particular with a substantially T-shaped cross-section.
The transom sealing piece can have lateral webs which are ar- ranged between the first sealing strip on the first sealing profile in the area of the recess and the second sealing strip on an end section projecting into the re- cess.
In a central area, the transom sealing piece can have a block or a thick- ening that is arranged in the extension of a screw groove of the transom.
A clamping element or spring projecting into the screw groove is then preferably cut off at the central section of the protruding end section so that the block can support the end section.
Preferably, the first sealing profile and the second sealing profile have the same cross-section, so that the same sealing profiles can be used for all junctions where the transom and mullion meet, which makes installation easier.
The seal- ing profiles are cut to produce a recess or a protruding end section, whereby the part of the sealing profile to be removed is then preferably connected in the longitudinal direction via predetermined breaking points, so that it can be pulled off in the longitudinal direction and removed without a cutting tool.
In a preferred embodiment, the first web is formed on one of the limbs of the central portion and protrudes substantially perpendicularly from the limb and is thus aligned parallel to the second web.
Alternatively, the first web can be formed on the second web and be substantially angular in cross-section, so that the first web and the second web are formed as a "Y", which are formed on the limb of the central section.
Preferably, the first and second sealing strips on the sealing profile according to the invention are formed in such a way that a loosely adjoining profiling is formed on the adjoining side of the sealing strips, which prevents displacement of the two sealing strips perpendicularly or laterally to the longitudinal direction and parallel to the plane of a filling element, such as an insulating glass pane.
This profiling can be formed, for example, by projections, strips, grooves, flutes or ribs.
As the two sealing strips only lie loosely against each other, one of the two sealing strips can be easily removed, e.g. at intersections.
The invention is explained in more detail below by means of an embodiment example with reference to the accompanying drawings, whereby:
Figure 1 shows a schematic view of a mullion-transom structure; Figure 2 shows a sectional view through a mullion with a sealing profile ac-
cording to the invention;
Figure 3 shows an exploded perspective view of two sealing profiles in the area of a junction; Figure 4 shows a perspective view of the node in Figure 3 from another side; Figure 5 shows a sectional view through a mullion in the area of a node; Figure 6 shows a sectional view through a transom in the area of a junction; Figure 7 shows a sectional view through a further embodiment of a sealing profile, and Figure 8 a sectional view of a further example of a sealing profile. A mullion-transom structure 1 comprises vertical mullions 2, which are con- nected via horizontal transoms 3 or transoms 3' that are inclined to the vertical. The size of the individual fields within the mullions 2 and transoms 3 can be freely designed, depending on the facade, whereby the mullion-transom struc- ture can also be used for pitched skylights. Drainage is possible at the junctions between mullion 2 and transom 3, which is formed by channels on sealing pro- files. Figure 2 shows a section through a mullion 2 or transom 3, which is fixed as an attachment profile on another profile made of steel, wood or another material. The mullion 2 or transom 3 comprises a screw groove 4, which protrudes verti- cally from a plate-shaped web 5. Hooks 6 are formed on the plate-shaped web
5. A sealing profile 10 is fixed to the mullion 2 or transom 3, which has a U- shaped central section 11. A clamping element 9 is formed on the central sec- tion 11 and is inserted into the screw groove 4. The central section 11 com- prises two parallel limbs 12, which grip around the walls of the screw groove 4. A first web 13, on which a first sealing strip 14 is formed, protrudes essentially vertically on each limb 12. The sealing strip 14 is supported on the mullion 2 or transom 3 and fixed to the hook 6. Furthermore, a second web 15 protrudes substantially vertically from the limb 12, on which a second sealing strip 16 is formed. The two sealing strips 14 and
16 have a greater thickness than the webs 13 and 15. As a result, the first seal- ing strip 14 protrudes towards the mullion 2 or transom 3, and the second seal- ing strip 16 protrudes from the second web 15 towards a surface element not shown, for example an insulating glass pane.
A sealing web is arranged between the first sealing strip 14 and the second sealing strip 16, which is preferably integrally formed with one of the two seal- ing strips 14 or 16, in particular via a joint on the outside of the respective seal- ing strip 14 or 16. The sealing web 17 has a lower thickness than the sealing strips 14 and 16. The structure of the two sealing strips 14 and 16 with the seal- ing web 17 has, for example, a height h of between 12 mm and 30 mm, in par- ticular 14 mm and 19 mm.
The total height H of the attachment profile with the central section 11 is, for example, between 20 mm and 40 mm.
The first web 13 and the second web 15 are connected to each other via a con- necting web 18. This forms a hollow chamber 19, which is formed by a part of the limb 12, a part of the webs 13 and 15 and the connecting web 18. The sealing profile 10 is preferably symmetrical to a center plane through the screw groove 4 and can be made of an elastic material, for example EPDM, for example by extrusion.
Figure 3 shows a first sealing profile 10 on a mullion 2 not shown and a second sealing profile 10' on a transom 3 not shown in the area of a junction.
The seal- ing profiles 10 and 10' have the same cross-sectional shape, so that reference is made to the above remarks on the design of the sealing profiles 10 and 10'. The sealing profile 10 on the mullion 2 has a recess 20, which is produced by cutting out the second sealing strip 16. In the area of the recess 20, the first web 13 with the first sealing strip 14 is not cut in.
Preferably, the second web 15 is also not cut or is at least only slightly cut, in particular less than 20 % of the width.
The sealing profile 10' fixed to the transom 3 has an end section 21 on the side facing the sealing profile 10, which is cut in.
At the end section 21, the sealing profile 10" has no first sealing strips 14 and no webs 13. As a result, the end section 21 with the second sealing strips 16 and the webs 15 can be inserted into the recess 20 in order to produce drainage from the groove with the web 15 as the groove bottom into the groove on the sealing profile 10.
To support the end section 21, a sealing piece 22 is provided, which is T- shaped in cross-section. A block 23 is arranged in the extension of the screw groove 4 of the transom 3, and lateral webs 24 protrude on both sides of the block 23, which have a bend 25 at the end, which can optionally be omitted. The lateral webs 24 are placed on the sealing strip 14, the lateral webs 24 hav- ing approximately the same thickness as the sealing web 17, so that the sec- ond sealing strip 16 on the sealing profile 10' extends substantially in the longi- tudinal direction at the end section 21 without bending. The transom sealing piece 22 can be made of an elastic or dimensionally stable material, although different materials can optionally be used. The transom sealing piece can be glued to the end section 21 or sealed with liguid sealant. The end section 21 can have a slightly greater length than the width of the sec- ond sealing strip 16 on the sealing profile 10, so that one end of the end section 21 slightly overlaps the web 15 on the sealing profile 10, for example by up to 4 mm, preferably between 1 mm and 3 mm. Since the two sealing profiles 10 and 10' are made of an elastic material, a seal is essentially created in the area of the overlap. However, the first web 13 on the sealing profile 10 ensures that no moisture can get into the construction with the mullion 2 in any case. In Figure 4, the junction point of Figure 3 is shown from a rear side, and it can be seen that in the area of the end section, the sealing profile 10' is cut into both the area of the first sealing strip 14, the web 13 and the area of the sealing web 17. For drainage from the sealing profile 10' on the transom 3 into a groove on the sealing profile on the mullion 2, the web 15 forms a groove bot- tom of a drainage groove, which extends up to the web 15 on the sealing profile
10. In the assembled position, the webs 15 on the sealing profiles 10 and 10' are essentially arranged in the same plane, and only in the area of the overlap is the web 15 slightly deformed in order to compensate for the overlap. The overlap can also be sealed by the elastic material. Figure 5 shows a sectional view through a mullion on which a sealing profile 10 with a recess 20 is mounted. In the area of the recess 20, the second sealing strip 16 has been cut out, and the hatching indicates that the first sealing strip 14, the first web 13 and the second web 15 are continuous in the area of the re- cess. In the area of the recess 20, the sealing web 17 between the two sealing strips 14 and 16 is also missing.
Figure 6 shows a sectional view through the sealing profile 10' on a transom 3 in the area of the end section 21. The first web 13 and the first sealing strip 14 have been removed from the sealing profile 10' in the area of the end section. In addition, the sealing web 17, which is integral with the second sealing strip 16, is also missing. By removing the sealing web 17, the transom sealing piece 22 with the lateral webs 24 can be inserted into the space between the first sealing strip 14 on the sealing profile 10 and the second sealing strip 16 on the sealing profile 10'. The block 23 of the transom sealing piece is arranged in the area of the screw groove 4 and can optionally also be modeled on the contour of the screw groove 4, i.e. have a central groove. In the illustrated embodiment example, a junction point of a mullion-transom structure 1 has been explained in detail. Such a junction point can be provided at all connections between mullions 2 and transoms 3 or between two angularly arranged transoms 3, whereby the protruding end section 21 can be provided both on a sealing profile 10' mounted on a transom 3 and on a sealing profile 10 mounted on a mullion 2. The term transom sealing piece 22 thus also in- cludes an arrangement of this component in the extension of a mullion 2 in- stead of on a transom 3. In the design example shown, the webs 13 and 15 are arranged in parallel. It is of course also possible to align the webs 13 and 15 at an angle to each other. In addition, the web 13 can also be formed on the web 15 instead of on the limb
12. In this case, the webs 13 and 15 form a "Y", whereby the length of the webs 13 and 15 can also be different. The web 13 can then be designed as a joint, bend or hook. Figure 7 shows a view of a modified sealing profile 10" that can be mounted on a mullion or transom. The sealing profile 10" has a central section 11, a first sealing strip 14 and a second sealing strip 17 as in the previous embodiment example. However, the first web 13' is not parallel across the entire width of the second web 15, but has an angled cross-section. The first web 13' thus con- nects the first sealing strip 14 to the web 15 in a central area and not to the limb
12. In order to mount the sealing profile 10" at a junction point on a mullion 2, the sealing strip 16 can be removed using a tool 30 to form a recess 20, so that the web 15 remains mounted on the mullion. The sealing profile 10" can also be mounted on a transom 3, whereby the sealing strip 14 with the angled web 13 and the sealing web 17 is removed to produce an end section 21, optionally also the clamping element 9, so that a transom sealing piece 22 can be mounted on the end section 21. Figure 8 shows a sealing profile 10™ which has a U-shaped central section 11 with two parallel limbs 12, similar to that shown in Figure 2. Two webs 13 and 15 protrude from each limb 12, on each of which a sealing strip 14 or 16 is formed.
The two webs 13 and 15 are connected to each other via a connecting web 18, wherein the connecting web 18 is optionally formed integrally with both webs 13 and 15 or is formed integrally with only one of the webs 13 or 15 and rests loosely against the other.
A hollow chamber 19 is formed between the connecting web 18 and the web 13. In this embodiment example, the first sealing strip 14 and the second sealing strip 16 lie loosely against each other.
On the second sealing strip 16, on the side facing the first sealing strip 14, a profiling is formed with two strip-shaped projections 31, each of which engages in a receptacle 32 on the first sealing strip 14. This profiling prevents displacement of the sealing strips 14 and 16 in a direction perpendicular to/to the side of the longitudinal direction.
The profiling can be designed as strip-shaped projections 31 and receptacles 32, but also as a tongue-and-groove connection or grooves, ribs, recesses or with other geom- etries.
The number of interlocking profiles can also vary.
The two sealing strips 14 and 16 are only loosely attached to each other and can therefore be easily removed from each other, for example to produce a notch.
A receptacle 33 is formed on the first sealing strip 14, into which a hook 6 can be inserted on a mullion 2 or transom 3 in order to secure the sealing strip 14.
List of reference signs 1 Mullion-transom structure 2 Mullion 3,3 Transom 4 Screw groove 5 Web 6 Hooks 9 Clamping element 10,10", 10", 10™ Sealing profile 11 Central section 12 Limb 13 Web 14 Sealing strip 15 Web 16 Sealing strips 17 Sealing web 18 Connecting web 19 Chamber 20 Recess 21 End section 22 Sealing piece 23 Block 24 Web 25 Bend Tool 31 Projection 32 Receptacle 33 Receptacle 30 h Height H Total height