EP4397820A1 - Unité de raccordement pour un drainage de toit comprenant un cadre de raccordement - Google Patents

Unité de raccordement pour un drainage de toit comprenant un cadre de raccordement Download PDF

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Publication number
EP4397820A1
EP4397820A1 EP23220326.5A EP23220326A EP4397820A1 EP 4397820 A1 EP4397820 A1 EP 4397820A1 EP 23220326 A EP23220326 A EP 23220326A EP 4397820 A1 EP4397820 A1 EP 4397820A1
Authority
EP
European Patent Office
Prior art keywords
connection
frame
plastic
connection frame
sleeve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP23220326.5A
Other languages
German (de)
English (en)
Inventor
Markus Dresmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sita Bauelemente GmbH
Original Assignee
Sita Bauelemente GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sita Bauelemente GmbH filed Critical Sita Bauelemente GmbH
Publication of EP4397820A1 publication Critical patent/EP4397820A1/fr
Pending legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
    • E04D13/04—Roof drainage; Drainage fittings in flat roofs, balconies or the like
    • E04D13/0404—Drainage on the roof surface
    • E04D13/0409—Drainage outlets, e.g. gullies
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
    • E04D13/04—Roof drainage; Drainage fittings in flat roofs, balconies or the like
    • E04D13/0404—Drainage on the roof surface
    • E04D13/0409—Drainage outlets, e.g. gullies
    • E04D13/0431—Drainage outlets, e.g. gullies with horizontal evacuation over the border of the roof
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
    • E04D13/04—Roof drainage; Drainage fittings in flat roofs, balconies or the like
    • E04D13/0404—Drainage on the roof surface
    • E04D13/0409—Drainage outlets, e.g. gullies
    • E04D2013/0436—Drainage outlets, e.g. gullies with sealing means

Definitions

  • the present invention relates to a connection unit for roof drainage according to the preamble of claim 1.
  • connection units for roof drainage for round and rectangular water pipes are known.
  • connection unit for roof drainage according to the features of claim 1.
  • Advantageous embodiments are specified in the associated subclaims.
  • connection unit for roof drainage comprising a roof drain body, a connection frame and a connection sleeve, in particular for a roof sealing membrane, wherein the connection sleeve for the roof sealing membrane has an opening, the edge surfaces of which are held together with the connection frame in the roof drain body.
  • the connection frame comprises at least one connection channel and/or at least one reinforcing element and the roof drain body and is formed monolithically from a plastic by molding it onto the connection frame and the connection sleeve held by the connection frame, wherein plastic has penetrated into the at least one connection channel and/or the at least one reinforcing element and provides a reinforced connection between the roof drain body and the connection frame.
  • a molding can be an injection molding process.
  • connection frame provides an additional seal between the sleeve and the roof drain body.
  • recesses are also provided in the connection frame, preferably hole-like recesses, plastic can also penetrate into these recesses in the connection frame during the injection molding process and further strengthens the connection between the connection frame and the Roof drain body. The injected plastic creates a kind of interlocking to reinforce the fastening between the roof drain body and the connecting frame.
  • the sleeve can be primed before the injection process so that the injected plastic adheres even better to the sleeve.
  • a fleece can be applied to the sleeve so that the connection is even tighter between the roof drain body and the sleeve during injection.
  • connection frame is preferably perforated.
  • the roof drain body is preferably formed monolithically from a first plastic and the connection frame is formed from a second plastic.
  • connection unit is preferably used for the wall connection for roof drainage, such as parapet drainage, where an essentially horizontal sewer pipe lead-through for roof drainage is made through the parapet.
  • the connection unit can also be used for other drainage situations in which a connection sleeve is provided.
  • the roof drain body can advantageously be designed in the manner of a flange or a pipe and have a transition section and a flange section.
  • the transition section forms an area with a wall thickness that is preferably greater or increasing than the drain pipe section, with the transition section in the area of the connection frame merging into the flange section, which serves, for example, to attach to a parapet or to rest on a ceiling element.
  • the first front surface of the connection frame which faces the inside (roof side), is aligned with the top side of the connection sleeve and/or set back a maximum of a few millimeters.
  • the front surface of the connection frame and the top side of the connection sleeve thus form a common (outer) plane.
  • the roof drain body can have two or more parallel inner tubes, which are separated from each other at least over a partial length by one or more channel inner walls.
  • the roof drain body is formed monolithically from a first plastic, which is a foamed plastic, and wherein the connecting frame is formed from a second plastic, which is a non-foamed plastic, in particular an injection-molded plastic.
  • the first and the second plastic are a polyurethane (PU) or a plastic mixture comprising PU, in particular a plastic mixture containing PU as the main component.
  • plastic plastic mixture
  • material plastic mixtures mentioned here, in particular after they have completely hardened or dried.
  • a “molding compound” is to be understood as the material liquefied under pressure or heat as well as the material that has not yet fully hardened or dried and/or possibly foamed, as used to manufacture and produce the connection unit, in particular to manufacture the sewer pipe section and the roof drain body.
  • connection frame comprises at least one connecting channel and/or at least one reinforcing element.
  • a large number of connecting channels are advantageously provided in the connection frame. These can be arranged evenly distributed on the rear side of the connection frame.
  • the reinforcing element itself is designed in a grid or raster structure.
  • the opening area or cross-sectional area spanned by the channel opening of the connecting channel can be inclined or slanted to the inner flow cross-section of the connecting channel and/or one of the end faces.
  • the connecting channels can advantageously be designed as holes or channels that are closed on all sides, such as a blind hole.
  • at least one connecting channel can also be slotted in its longitudinal direction or have further openings transverse to its longitudinal axis, so that gas inclusions are reliably avoided and a high degree of cross-linking and stiffening is achieved with respect to all adjacent cavities and surfaces.
  • the connecting channels thus form a reinforcement structure which, after the molding compound has hardened, represents a very advantageous, permanent connection structure between the connecting frame and the material of the roof drain body.
  • the connecting channels have openings on both sides, so that in this embodiment it is provided that at least a portion of the connecting channels have a channel outlet next to the channel opening.
  • the connecting channels are advantageously designed as holes or channels that are closed on all sides, for example similar to a through hole.
  • at least one connecting channel can additionally be slotted in its longitudinal direction or have further openings transverse to its longitudinal axis.
  • the channel surface and the rear surface are in particular continuous and/or circumferential.
  • connection frame is furthermore advantageously designed and dimensioned such that the channel surface essentially represents the even continuation of the inner surfaces of the connected channel pipe section.
  • the channel surface can be inclined by 0.5° to 5°, ideally by 1°-2°, against the inner surface of the channel pipe section or the flow axis of the channel pipe section.
  • connection sleeve is held securely in its position within the connection unit even under mechanical stress, such as expansion processes or maintenance work.
  • the rear surface of the connection frame has at least one friction element over at least part of its length, against which at least part of the edge surface of the connection sleeve rests with the upper side.
  • the advantage of a closed lamella structure of the friction element is that During production, it is avoided that molding compound penetrates between the friction element and the upper side of the connection sleeve and detaches it from the friction element, thereby weakening the mechanical connection between the friction element and the connection sleeve.
  • At least one groove section is formed on the rear surface between the reinforcing element and the friction element, wherein the outer edge of the edge surface of the connection sleeve is arranged within the at least one groove section.
  • the groove section is a closed groove which is arranged circumferentially between the reinforcing element or sections thereof and the friction element or sections thereof.
  • connection sleeve refers to the side that is exposed in the installation position and is exposed to the effects of the weather, i.e. is wetted by rain, and also refers to its continuation within the connection unit.
  • back of the connection sleeve refers to the surface opposite it.
  • the "inner surface” of the connection sleeve refers to the surface area that is arranged within the connection unit.
  • connection sleeve lies within the groove section or on a flank of the friction element, it is ensured that even pressure is applied when the material is pressed in or a foaming material expands and that the connection sleeve is not lifted off the friction element.
  • connection frame has a substantially rectangular basic shape, with two width sections, two height sections and four corner sections.
  • W/H width to height
  • the corner sections on the channel side are advantageously designed as radii in the circumferential direction, i.e. rounded.
  • the second end face of the connecting frame which merges into the duct pipe section or rests there, is contoured and has, for example, a toothed or wave structure, so that an improved connection with the molding material or the material is produced.
  • connection unit when manufacturing the connection unit, particularly when connecting the connection frame to a roof drain body, molding compound can penetrate into all adjacent surfaces in the connecting channels and/or reinforcing elements, and a stable, internal support structure can be formed after hardening. This means that the connection frame can no longer be removed or loosened without causing damage. Furthermore, this intimate connection also creates a particularly tight connection and the penetration of water into adjacent building structures, such as wall or roof elements, is reliably prevented.
  • connection frame itself is preferably a monolithic frame that is made from a single material, in particular as an injection-molded part.
  • connection frame is composed of several parts, preferably two straight width sections, two straight height sections and four corner sections, whereby the individual parts can be plugged into one another and/or glued together.
  • At least one friction element is provided over at least a partial length of the rear surface at least in the circumferential or circumferential direction, by means of which a connection sleeve can be held in a clamping manner against an adjacent surface.
  • connection sleeve In a first manufacturing step, an opening is made in the connection sleeve, wherein the opening is followed by an edge surface which is intended to rest on the rear side of the connection frame, in particular a friction element of the connection frame.
  • connection sleeve with the connection frame is then inserted into a forming tool.
  • the connecting frame is supported until the molding compound has completely or largely hardened in order to counteract permanent deformation.
  • the molding tool can therefore have a guide and spreading section that can be placed on at least part of the length of the channel surface of the connecting frame. In this way, bending, in particular of the width section of the connecting frame in the direction of the flow axis, due to the pressure of the molding compound is avoided until it has hardened.
  • the inner surface of the bottom wall 124 merges largely without a step or edge into the channel surface 152 of the connecting frame 150, wherein the bottom wall 124 or the channel pipe section 120 is slightly tilted by 0.5° to 2.5° relative to the channel surface 152 of the connecting frame 10 in order to provide a gradient for the roof water to be drained off when the lower channel surface 152 is installed horizontally in the channel pipe section 120.
  • the cutting plane runs through a connecting channel 170 in the lamellar reinforcement element 176, so that the upper, free end of the reinforcement element 176 appears as a triangle.
  • the connecting channel 170 has unmarked openings on both sides and is completely filled with material, which in this case is a PU foam
  • the connecting channel 170 shown in section is open on two sides. One opening of the connecting channel 170 is arranged on the side of the second end face 158 and the second opening leads into the groove section 172.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)
EP23220326.5A 2023-01-09 2023-12-27 Unité de raccordement pour un drainage de toit comprenant un cadre de raccordement Pending EP4397820A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202023100075.4U DE202023100075U1 (de) 2023-01-09 2023-01-09 Anschlusseinheit für eine Dachentwässerung mit einem Anschlussrahmen

Publications (1)

Publication Number Publication Date
EP4397820A1 true EP4397820A1 (fr) 2024-07-10

Family

ID=85175314

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23220326.5A Pending EP4397820A1 (fr) 2023-01-09 2023-12-27 Unité de raccordement pour un drainage de toit comprenant un cadre de raccordement

Country Status (2)

Country Link
EP (1) EP4397820A1 (fr)
DE (1) DE202023100075U1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7703110U1 (de) * 1977-02-03 1977-05-12 Grumbach, Emil, 6331 Muenchholzhausen Dachgully
GB1491111A (en) * 1974-08-01 1977-11-09 Goebel K Roof drainage funnel
EP0145012A2 (fr) * 1983-12-13 1985-06-19 ETERNIT Aktiengesellschaft Goulotte d'écoulement des eaux
DE3516657A1 (de) * 1985-05-09 1986-11-13 Emil 6330 Wetzlar Grumbach Pu-dachdurchfuehrung oder dachablauf mit klebekragen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1491111A (en) * 1974-08-01 1977-11-09 Goebel K Roof drainage funnel
DE7703110U1 (de) * 1977-02-03 1977-05-12 Grumbach, Emil, 6331 Muenchholzhausen Dachgully
EP0145012A2 (fr) * 1983-12-13 1985-06-19 ETERNIT Aktiengesellschaft Goulotte d'écoulement des eaux
DE3516657A1 (de) * 1985-05-09 1986-11-13 Emil 6330 Wetzlar Grumbach Pu-dachdurchfuehrung oder dachablauf mit klebekragen

Also Published As

Publication number Publication date
DE202023100075U1 (de) 2023-01-25

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