EP3597834B1 - Component for a drain device for a flat roof with attic - Google Patents

Description

The present invention relates to a component for a drain device for a flat roof with a parapet according to the preamble of claim 1, a method for producing such a component and a drain device for a flat roof with a parapet with such a component.

In the following, a parapet is intended to denote a wall-like elevation on the edge of a flat roof.

A component of the type mentioned is from Klober Limited: " The Favent Flat Roof Range ", Derbyshire, UK, September 2015, pages 1 to 24 known. A component described therein on page 7 comprises an angle part made of a thermoplastic elastomer that comprises a leg with an opening and a drainage connection which extends away from the angle part starting from the opening.

the NL 9 202 258 A discloses a drainage device for a flat roof with a sealing film.

the DE 20 2006 003 103 U1 discloses an emergency overflow for a flat roof with a connection sleeve.

the DE 200 02 607 U1 discloses a drainage device for a flat roof with parapet. The drainage device comprises a plate-shaped part with an opening and a drainage connection which, starting from the opening, extends away from the plate-shaped part and, when installed, protrudes through the parapet. A disc-shaped ring, which is attached to the parapet, can be pushed onto the drain socket. A film can be glued to the plate-shaped part.

The problem on which the present invention is based is to create a component of the type mentioned at the outset which enables a drain device to be easily mounted on a flat roof with a parapet. Furthermore, a method for producing such a component and a drain device with such a component are to be specified.

This is achieved according to the invention by a component of the type mentioned at the beginning with the characterizing features of claim 1, a method with the features of claim 8 and a drain device with the features of claim 10. The subclaims relate to preferred embodiments of the invention.

According to claim 1 it is provided that the component comprises a sealing film which is connected to the angle part and extends at least partially over the inner surfaces of the legs, and that the component comprises a support ring which is arranged on the drainage connection, the support ring partially is arranged in the drainage nozzle or partially outside the drainage nozzle, and wherein the support ring is used to receive a connecting pipe and to seal against this connecting pipe.

The sealing foil enables simple integration into sealing foils that are present on the roof. The elastomer material of the angle part enables the compensation of unevenness in the horizontal and vertical connection areas. The drain connection can be designed as an integral part of the angle part and in particular consist of the same material as the angle part. The support ring can be made of a more stable material such as PP. The support ring can be used to stabilize the elastomeric material Serve drain nozzle. Furthermore, a latching of the connecting pipe on the support ring can also be made possible.

It can be provided that the elastomer material of the angle part is a thermoplastic elastomer, such as TPE, TPA, TPC, TPO, TPS, TPU, TPV or TPZ, or that the elastomer material of the angle part is a classic elastomer, such as EPDM, NR, NBR , HNBR, HR, CR, FKM, CSM, VMQ or MVQ. Alternatively or additionally, it can be provided that the elastomer material of the angle part has an elongation at break according to DIN 53504 or ISO 37 of more than 200%. Corresponding elastomer materials have a suitable elasticity to compensate for the unevenness.

It is possible that the sealing film consists of bitumen or comprises bitumen. Bitumen is often used for sealing sheeting on flat roofs, so that integration is simplified.

There is a possibility that the component is a one-piece part. This reduces the assembly effort.

It can be provided that the component is at least partially designed as an injection molded part. For this purpose, a thermoplastic elastomer, such as TPE, TPA, TPC, TPO, TPS, TPU, TPV or TPZ, can be used as an elastomer material. Injection molding allows the component to be manufactured easily and inexpensively. It is also very compact and stable.

There is definitely the possibility that the component is not an injection molded part, but that the individual parts of the component are glued or welded to one another. This is particularly useful when the elastomer material of the angle part is a classic elastomer, such as EPDM, NR, NBR, HNBR, HR, CR, FKM, CSM, VMQ or MVQ.

• Die Abdichtfolie wird in ein Spritzgusswerkzeug eingelegt;
• das Winkelteil wird, gegebenenfalls zusammen mit einem daran angeformten Ablaufstutzen, durch Spritzgießen hergestellt und verbindet sich dabei mit der Abdichtfolie.

According to claim 8, the method is characterized by the following method steps:

• The sealing film is placed in an injection molding tool;
• the angled part is produced by injection molding, optionally together with a drain connection formed thereon, and thereby connects to the sealing film.

In particular, in addition to the sealing film, the support ring can be inserted into the injection molding tool, so that the angle part connects to the sealing film and the support ring during injection molding. This method can be carried out easily and inexpensively. The component produced with it is very compact and stable.

As an alternative to this, it can also be provided that only the sealing film is inserted into a multi-component injection molding tool and both the angle part and the support ring are produced simultaneously by an injection molding process. It can also be provided that the support ring is inserted into a multicomponent injection molding tool and then at least partially encapsulated with the angle part and in particular with the drain connection formed on the angle part. Subsequently, the sealing film can then be molded onto the angle part.

There is definitely the possibility of connecting the individual components of the component to one another using other methods such as gluing and / or welding.

According to claim 10, the drain device comprises a component according to the invention.

It can be provided that the drainage device comprises a pipe section or a downwardly open partial pipe section which can be arranged at least partially in the opening in the second leg of the component. Furthermore, it can be provided that the drainage device comprises an inlet element such as a leaf catcher basket, which can be arranged on the side facing away from the drainage connection in front of the opening in the second leg of the component. Advantageously, the pipe section or the partial pipe section open at the bottom and the inlet element or the leaf catcher can form a preassembled unit, whereby the assembly is also facilitated.

There is the possibility that the drainage device comprises a connecting pipe which can be connected to the drainage nozzle and which can open out on the drain side into a drainage pot, which may be included by the drainage device, or an on-site drainage pipe. The drainage device can include latching means, which are arranged in particular on the component and / or on the pipe section or the partial pipe section and / or on the connecting pipe in order to establish a connection between the component on the one hand and the pipe section or the partial pipe section and / or the connecting pipe on the other hand . The locking of the individual parts to one another can also simplify assembly.

Fig. 1

eine perspektivische Explosionsansicht einer ersten Ausführungsform eines erfindungsgemäßen Bauteils mit Teilen einer erfindungsgemäßen Ablaufvorrichtung;

Fig. 2

eine gedrehte perspektivische Explosionsansicht des Bauteils gemäß Fig. 1 mit den in Fig. 1 abgebildeten Teilen der Ablaufvorrichtung;

Fig. 3

eine Draufsicht auf das Bauteil gemäß Fig. 1 mit den in Fig. 1 abgebildeten Teilen der Ablaufvorrichtung;

Fig. 4

einen Schnitt gemäß den Pfeilen IV - IV in Fig. 3;

Fig. 5

eine Detailansicht gemäß dem Pfeil V in Fig. 4;

Fig. 6

eine Fig. 5 entsprechende Detailansicht einer zweiten Ausführungsform eines erfindungsgemäßen Bauteils;

Fig. 7

eine Fig. 5 entsprechende Detailansicht einer dritten Ausführungsform eines erfindungsgemäßen Bauteils;

Fig. 8

eine Fig. 5 entsprechende Detailansicht einer vierten Ausführungsform ohne Stützring, welche nicht Teil der beanspruchten Erfindung ist;

Fig. 9

eine perspektivische Ansicht einer erfindungsgemäßen Ablaufvorrichtung mit der ersten Ausführungsform eines erfindungsgemäßen Bauteils in einer Einbausituation auf einem Flachdach mit Attika;

Fig. 10

eine Seitenansicht der erfindungsgemäßen Ablaufvorrichtung gemäß Fig. 9 in der Einbausituation auf einem Flachdach mit Attika;

Fig. 11

ein geschnittenes Detail gemäß dem Pfeil XI in Fig. 10.

Further features and advantages of the present invention will become clear on the basis of the following description of preferred exemplary embodiments with reference to the accompanying figures. Show in it:

Fig. 1

a perspective exploded view of a first embodiment of a component according to the invention with parts of a drain device according to the invention;

Fig. 2

a rotated exploded perspective view of the component according to FIG Fig. 1 with the in Fig. 1 pictured parts of the drainage device;

Fig. 3

a plan view of the component according to Fig. 1 with the in Fig. 1 pictured parts of the drainage device;

Fig. 4

a section according to the arrows IV - IV in Fig. 3 ;

Fig. 5

a detailed view according to the arrow V in Fig. 4 ;

Fig. 6

one Fig. 5 corresponding detailed view of a second embodiment of a component according to the invention;

Fig. 7

one Fig. 5 corresponding detailed view of a third embodiment of a component according to the invention;

Fig. 8

one Fig. 5 Corresponding detailed view of a fourth embodiment without a support ring, which is not part of the claimed invention;

Fig. 9

a perspective view of a drain device according to the invention with the first embodiment of a component according to the invention in an installation situation on a flat roof with parapet;

Fig. 10

a side view of the drain device according to the invention according to Fig. 9 in the installation situation on a flat roof with parapet;

Fig. 11

a sectioned detail according to arrow XI in Fig. 10 .

Identical and functionally identical parts are provided with the same reference symbols in the figures.

That in the FIGS. 1 to 5 The illustrated embodiment of a component 1 comprises an angle part 2, a sealing film 3 connected to the angle part 2, a drain connection 4 formed on the angle part 2 and a support ring 5 at least partially surrounding the drain connection 4 the support ring 5 are firmly connected to one another, so that the component 1 is a one-piece part.

The angle part 2 comprises a first leg 6 and a second leg 7 which enclose an angle α of 90 ° with one another (see FIG Fig. 2 , FIGS. 4 and 5 ). Each of the legs 6, 7 has an outer surface facing away from the other leg 7, 6 and an inner surface facing the other leg 7, 6.

In Fig. 5 the outer surface 8 of the first leg 6 is the lower side of the leg 6. This surface 8 can be arranged on the top of a flat roof 9 (see FIG Fig. 11 ). In Fig. 2 the outer surface 10 of the second leg 7 is the left surface that faces away from the sealing film 3. The outer surface 10 of the second leg 7 can be arranged on a parapet 11 protruding upwards from the top of the flat roof 9 (see FIG Fig. 11 ).

The second leg 7 has a through opening 12 which is arranged centrally in the lower region of the second leg 7 and can allow water located on the upper side of the flat roof 9 to drain off. The drain connection 4 extends from the opening 12 of the second leg 7 to the left in FIG Fig. 2 path. In the in FIGS. 9 to 11 In the installation state that can be seen, the drain connection 4 extends into the parapet 11.

The angled part 2 and the drain connection 4 formed thereon can consist of an elastomer material. The elastomer material can have an elongation at break according to DIN 53504 or ISO 37 of more than 200%. It can be provided that the elastomer material of the angle part is a thermoplastic elastomer, such as TPE, TPA, TPC, TPO, TPS, TPU, TPV or TPZ, or that the elastomer material of the angle part is a classic elastomer, such as EPDM, NR, NBR , HNBR, HR, CR, FKM, CSM, VMQ or MVQ.

The sealing film 3 extends over the inner surfaces 13, 14 of the legs 6, 7 of the angle part 2. The sealing film 3 is arranged in the assembled state on the inner surface 13 of the first leg 6 (see FIG Fig. 5 ) and arranged on the side of the inner surface 14 of the second leg 7 facing away from the parapet 11 (see FIG Fig. 11 ).

The sealing film 3 can consist of bitumen.

The support ring 5 partially surrounds the drain connection 4 and protrudes on the side of the drain connection 4 facing away from the angle part 2 over the latter to the left Fig. 5 out. The part of the support ring 5 protruding on the outside beyond the drain connection 4 has the same inner diameter as the drain connection 4, so that the Drain connection 4 and the part of the support ring 5 adjoining it on the outside form a common contact surface for a connecting pipe 15 of the drain device, which will be described in more detail below (see FIG Fig. 5 ).

The support ring 5 is made of a harder material than the drain connection 4. It can in particular consist of PP.

Other geometries and arrangements of the drain connection 4 and the support ring 5 are possible.

Fig. 6 shows a variant in which the contact surface for the connecting pipe 15 is completely formed by the support ring 5. The drain connection 4 partially surrounds the support ring 5.

Fig. 7 shows a variant in which the contact surface for the connecting pipe 15 is also completely formed by the support ring 5. However, here the drain connection 4 surrounds the support ring 5 over its entire length and even engages around it on the side facing away from the angle part 2.

Fig. 8 shows a variant not according to the invention, in which the contact surface for the connecting pipe 15 is completely formed by the drainage nozzle 4. In this variant, no support ring 5 is provided.

The component 1 can be produced by an injection molding process. For this purpose, the sealing film 3 and the support ring 5 are inserted into the injection molding tool and then at least partially encapsulated with the angle part 2 and in particular with the drainage nozzle 4 molded onto the angle part 2. Here, the angle part 2 and the outlet nozzle 4 connect to the two insert parts. The component 1 can be produced simply and inexpensively in this way and is compact and stable as a one-piece injection-molded part.

FIGS. 1 and 2 show parts of the drainage device that can be connected to component 1. These are, on the one hand, the connecting pipe 15, which can be pushed with a connecting section 16 into the outlet nozzle 4 and, if necessary, into the support ring 5. Corresponding seals 17 can be provided on the connecting section 16 (see FIG Fig. 5 ).

On the other hand, a downwardly open pipe section 18 and a leaf catcher 19 or another inlet element, not shown, are provided. In the assembled state, the partial pipe section 18 is at least partially arranged in the opening 12 in the second leg 7 of the component 1. The partial pipe section 18 has latching means 20 which can establish a latching connection with the discharge nozzle 4 or the support ring 5 and with the connecting section 16 of the connecting pipe 15. On the upper side of the partial pipe section 18, spring means (not shown) can be provided which hold the partial pipe section 18 in the outlet connection 4 or in the support ring 5.

The leaf catcher 19 is arranged on the side facing away from the drain connection 4 in front of the opening 12 in the second leg 7 of the component 1. The leaf catcher 19 can form a preassembled unit together with the pipe section 18.

the Figures 9 and 10 furthermore show that the drain device can comprise a drain pot 21 into which the connecting pipe 15 can open. The drain pan 21 can be connected to an on-site drain pipe 22.

Claims (14)

1. Component (1) for a drain device for a flat roof (9) with an attic (11), comprising

   - an angled part (2) which comprises a first leg (6) and a second leg (7), whereby each one of the legs (6, 7) has an outer face (8, 10) facing away from the respective other leg (6, 7) and an inner face (13, 14) facing the respective other leg (6, 7), whereby the outer face (8) of the first leg (6) can be arranged on the upper side of the roof (1), whereby the outer face (10) of the second leg (7) can be arranged on the attic (11) projecting upwards from the upper side of the flat roof (8), whereby the second leg (7) has an opening (12) and whereby the angled part (2) is made from an elastomer material or comprises an elastomer material, and

   - a drain connection (4), which is connected to the angled part (2) and extends from the opening (12) in the second leg (7) away from the angled part (2),

   characterised in that the component (1) comprises a sealing film (3) which is connected to the angled part (2) and extends at least partially over the inner faces (13, 14) of the legs (6, 7), and in that the component (1) comprises a support ring (5) which is arranged on the drain connection (4), whereby the support ring (5) is arranged partially in the drain connection (4) or partially outside the drain connection (4), and whereby the support ring (5) serves to receive a connecting pipe (15) and to provide sealing relative to this connecting pipe (15).
2. Component (1) according to claim 1, characterised in that the first and the second legs (6, 7) enclose an angle (α) between 70° and 110°, in particular an angle (α) between 80° and 100°, preferably an angle (α) 90° with one another.
3. Component (1) according to any of claims 1 or 2, characterised in that the elastomer material of the angled part (2) is a thermoplastic elastomer, such as for example TPE, TPA, TPC, TPO, TPS, TPU, TPV or TPZ, or in that the elastomer material of the angled part (2) is a conventional elastomer, such as for example EPDM, NR, NBR, HNBR, HR, CR, FKM, CSM, VMQ or MVQ.
4. Component (1) according to any of claims 1 to 3, characterised in that the elastomer material of the angled part (2) has an elongation at break according to DIN 53504 or ISO 37 of more than 200%.
5. Component (1) according to any of claims 1 to 4, characterised in that the sealing film (3) is made from bitumen or comprises bitumen.
6. Component (1) according to any of claims 1 to 5, characterised in that the component is made in one piece.
7. Component (1) according to any of claims 1 to 6, characterised in that the component (1) is formed at least partially as an injection moulded part.
8. Method for producing the component (1) according to any of claims 1 to 7, characterised by the following method steps:

   - the sealing film (3) is laid into an injection mould;

   - the angled part (2) is produced, optionally together with a drain connection (4) integrally formed thereon, by injection moulding and is thereby connected to the sealing film (3).
9. Method according to claim 8, characterised in that in addition to the sealing film (3) the support ring (5) is laid into the injection mould, so that during the injection moulding the angled part (2) is connected to the sealing film (3) and the support ring (5).
10. Drain device for a flat roof with an attic, comprising a component (1) according to any of claims 1 to 7.
11. Drain device according to claim 10, characterised in that the drain device comprises a pipe piece or a partial pipe piece (18) which is open towards the bottom and can be arranged at least partially in the opening (12) in the second leg (7) of the component (1).
12. Drain device according to any of claims 10 or 11, characterised in that the drain device comprises an inlet element such as for example a foliage trap (19) which can be arranged on the side facing away from the drain connection (4) before the opening (12) in the second leg (7) of the component (1).
13. Drain device according to any of claims 10 to 12, characterised in that the drain device comprises a connecting pipe (15) which can be connected to the drain connection (4) and on the outflow side can open into a sump (21), which is optionally comprised by the drain device, or a building-side drain pipe (22).
14. Drain device according to any of claims 11 to 13, characterised in that the drain device comprises latching means (20) which are arranged in particular on the component (1) and/or on the pipe piece and/or on the partial pipe piece (18) and/or on the connecting pipe (15), in order to produce a connection between the component (1) on the one hand and the pipe piece or the partial pipe piece (18) and/or the connecting pipe (15) on the other hand.

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