DE29906821U1 - Drainage drain for connection to building edges - Google Patents

Description

Drainage drain for connection to building edges

The invention relates to a drainage drain with an inlet opening _which opens into a drain pipe, wherein a lower clamping flange and an upper clamping flange are connected to the drain pipe and the clamping flanges, which can be aligned with one another in a form-fitting manner, are designed to produce a sealed connection to a sealing membrane.

The drainage drain is primarily suitable for collecting and draining rainwater and can be used, for example, as a balcony drain or for roof drainage, especially of flat roofs.

Building edges, such as the connections between building exterior walls or balcony door frames and balcony slabs, are heavily exposed to splash water and capillary rising rainwater and require particularly careful sealing.

Hanover:

Koblenzer Straße 21 D-30173 Hannover Federal Republic of Germany Telephone 0511 / 988 75 07 Fax 0511 / 988 75 09

Please reply to:

Brunswick:

Theodor-Heuss-Straße D-38122 Braunschweig Federal Republic of Germany Telephone 0531 / 28 14 0-0 Fax 0531 / 28 140

A sealing sheet is provided which rests on the roof surface or the balcony slab and is seamlessly edged onto the vertical building wall or door frame. An insulating layer is usually arranged on this sealing sheet, which is covered with another sealing sheet, which is also edged. The edges of the sealing sheet are protected from mechanical influences and UV radiation with a protective sheet which is screwed onto the vertical edge.

Traditionally, drainage drains are installed at a distance of

arranged at least 50 cm from the building edge and installed in the sealing sheets with fixed flanges, loose flanges, adhesive flanges or integrated connecting sheets. The distance to the building wall is necessary in order to keep the load on the edge of the sealing sheets as low as possible so that damage is avoided.

It is also known to provide drainage channels in front of doors, especially balcony or patio doors. The water flows from the drainage channels over the sealing strips into a drainage drain located away from the edge of the building. Here, too, a minimum distance from the balcony or patio door must be provided in order to exclude the risk of water penetrating through the door.

The present invention is based on the problem of creating an improved drainage drain for connection to building edges with an inlet opening that opens into a drain pipe, wherein a circumferential lower clamping flange is connected to the drain pipe and clamping flanges that can be aligned with one another in a form-fitting manner are designed to produce a sealed connection to a sealing membrane. The drainage connection should be designed in such a way that a reliable and permanent seal of the building edge is still guaranteed and that the drainage drain can be mounted so that it is tread-proof.

Based on this problem, the invention proposes a

Watering drain of the type mentioned at the beginning, characterized in that the lower clamping flange and the upper clamping flange are angled for connection to a vertical building edge.

The use of an angled clamp flange advantageously enables a reliable and firmly sealed installation of the drainage drain directly adjacent to a building edge. To do this, the drain pipe is placed in the building edge with the lower clamp flange. A first sealing strip is preferably provided between the angled part of the lower clamp flange and the building wall. The angled lower clamp flange ensures that the drain pipe sits securely on the surface of a flat roof or balcony slab. The upper clamp flange with the inlet opening for the rainwater to be drained that opens into the drain pipe is aligned with the lower clamp flange in a form-fitting manner. A second sealing strip can be provided between the clamp flanges, which is pulled up on the building edge. The angled clamp flanges ensure a reliable and permanent seal on the building edge. The horizontal support surface and the vertical support surface ensure that the drainage drain is vibration-free and non-slip. Advantageously, a collecting box is provided for the inlet opening, which is connected to the drain pipe.

Especially in the case of balconies or terraces, the drainage outlet is designed as a longitudinally extending drainage channel. In this embodiment, the clamping flanges are advantageously designed as longitudinally extending L-shaped profiles that have suitable recesses for the drain pipe or the collecting box.

In the case of balconies, the drain pipe is preferably led downwards into a downpipe. For this structural design, the drain pipe is sealed through the horizontal part of the lower clamping flanges.

To simplify assembly and to ensure that the upper clamping flange fits securely on the lower clamping flange, threaded screws are preferably connected to the lower clamping flange, e.g. by welding. Holes for receiving the threaded screw are provided in the upper clamping flange at the corresponding positions of the threaded screws. The upper clamping flange is then placed on the lower clamping flange and can be secured with nuts. This also ensures a firm fit for a second sealing strip that may be arranged between the clamping flanges.

The invention will be explained in more detail below using an embodiment shown in the drawings.
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Figure 1 - a sectional view of a drainage drain at the edge of a balcony slab and a balcony door;

Figure 2 - an enlarged detailed view of a two-part drainage drain;

Figure 3 - an enlarged detailed view of a drainage drain with a sieve unit as a single balcony drain;

Figure 4 - an enlarged detailed view of a drainage drain with sieve unit as a balcony direct drain.

Figure 1 shows a drainage system with a collecting box 1 and an inlet opening 2 above the collecting box 1 for collecting rainwater. The inlet opening 2 can be designed as a grid, for example. The collecting box 1 is firmly connected to an upper clamping flange 3. The upper clamping flange 3 has a hole 4 and rests on a lower clamping flange 5 in a form-fitting manner. A drain pipe 7 for draining the rainwater, which is firmly and sealingly connected to the lower clamping flange 5 or a hole 6 in the lower clamping flange 5, is adjacent to it.

Part 8 of the lower clamp flange 5 rests firmly on the base plate 9 of the balcony.

Figure 1 also shows that the lower clamping flange 5 and the upper clamping flange 3 are each angled. The angled vertical part 10 of the lower clamping flange 5 borders on the outer wall 11, e.g. the step of a door frame.

Figure 1 also shows that a first sealing sheet 12 is laid from the outer wall 11 and extends over a support plate below the base plate 9. In the exemplary embodiment shown, the drainage drain is designed as a two-part system, with a connecting pipe 14 being installed in the support plate 13 in a known manner and firmly connected to the first sealing sheet 12. The drain pipe 7 is then inserted into the connecting pipe 14.

Figure 1 also shows that a second sealing sheet 15 extends from the outer wall 11 over the lower clamping flange 5 and is guided seamlessly over the base plate 9. A suitable opening for the second sealing sheet 15 must be provided in the area of the bore 6 of the lower clamping flange 5. This second sealing sheet 15 is firmly clamped between the lower clamping flange 5 and the upper clamping flange by the upper clamping flange 3, so that a secure fit is guaranteed.

Figure 2 shows the two-part drainage system in detail. It is clear that the inlet opening 2 has the shape of a drainage grid and is supported by the collecting box 1. The collecting box 1 is connected to the upper clamping flange 3, which is angled.

Figure 2 also shows that the drain pipe 7 is firmly welded to the lower clamping flange 5 in the area of the bore 6. Figure 2 also shows that threaded screws 16 are welded to the lower clamping flange 5 and that the upper

The clamping flange 3 has holes for receiving the threaded screws 16 and can be positively connected to the lower clamping flange 3 with nuts 17, which are screwed onto the threaded screws 16.
5

Figure 3 shows an enlarged detailed view of a drainage drain with a sieve unit 18, which is mounted as a single balcony drain with an upper and a lower clamping flange 3 and 5 according to the embodiment of the drainage drain described above on the outer wall, e.g. of a balcony.

In contrast to the drainage outlet shown in Figures 1 and 2, no collecting tank 1 is provided. Instead, a sieve unit 18 opens into the drain pipe connected to the clamping flanges 3 and 5.

Figure 4 shows a drainage drain with a sieve unit 18, which is designed as a direct balcony drain. In addition to the drainage drain shown in Figure 3, there is a sieve pipe section 19 in the connecting pipe 14, through which coarse-grained material can be retained and thus blockage of the drainage is avoided.

JG/ro
Li /ne
JG/ra

Claims (5)

1. Drainage drain with an inlet opening ( 2 ) which opens into a drain pipe ( 7 ), wherein a lower clamping flange ( 5 ) and an upper clamping flange ( 3 ) are connected to the drain pipe ( 7 ) and the clamping flanges ( 3 , 5 ) which can be aligned with one another in a form-fitting manner are designed to produce a sealed connection to a sealing membrane ( 15 ), characterized in that the lower clamping flange ( 5 ) and the upper clamping flange ( 3 ) are angled for connection to a vertical building edge ( 11 ). 2. Drainage drain according to claim 1, characterized in that the inlet opening ( 2 ) opens into a collecting box ( 1 ) and the collecting box ( 1 ) is connected to the drain pipe ( 7 ), the collecting box ( 1 ) being arranged next to the angled clamping flanges ( 3 , 5 ). 3. Drainage drain according to claim 2, characterized in that the collecting box ( 1 ) is an elongated drainage channel and the clamping flanges ( 3 , 5 ) are each formed from longitudinally extending L-shaped profiles. 4. Drainage drain according to one of claims 1 to 3, characterized in that the drain pipe ( 7 ) is guided in a sealing manner through the horizontal part ( 8 ) of the lower clamping flange ( 5 ). 5. Drainage drain according to one of the preceding claims, characterized in that threaded screws are provided for the positively locking, firm connection of the clamping flanges ( 3 , 5 ).