EP0536786A1 - Roof drainage system - Google Patents

Abstract

A roof drainage system comprising roof gutter (14), discharge housing (18), load-bearing unit (16) and downpipe (20) is assembled by snap-connecting means. <IMAGE>

Description

The invention relates to a roof drainage system, comprising at least one gutter which can be fastened at intervals along its essentially horizontal longitudinal extent to the roof structure by support units and at least one drain device which adjoins the gutter and which may be followed by an essentially vertically extending downpipe.

In the conventional design of such a roof drainage system, the support units are regularly attached to the roof structure in the form of gutter hooks. The successive shots of the gutter are then inserted into the gutter hooks and fastened by the plumber by bending operations of bendable fastening parts of the gutter hooks. Drainage boxes are usually attached to the channels, from which the water either falls freely or - mostly - is discharged through a down pipe to a sewer system in the ground. The drain boxes are made from the factory with fastening tabs or the like, which are bent after the installation of the drain boxes on the downward-facing outer profile of the channels around the channel top edges by the plumber, so that the drain boxes are then firmly and sufficiently tightly connected to the respective channel section .

If a downpipe is connected, this downpipe is regularly assembled from conical sections. The downpipe formed in this way is secured to the respective structure by pipe clamps with wall anchors.

The use of plumbing work when installing such a roof drainage system is large and increases the cost of building the roof drainage system due to considerable wage costs.

The invention has for its object to design the parts and in particular the standard parts of a roof drainage system so that the use of tinsmith work during assembly and possibly in the repair of the roof drainage system is significantly reduced.

To solve this task, various suggestions are made, which are applied to different areas of the roof drainage system.

The fastening of the gutter to the support units already fastened on the roof side can be significantly simplified in that the gutter can be fixed to the support unit by at least one snap connection.

Regardless of the shape of the gutter profile, such a snap connection is the easiest to install between a snap profile produce an upper gutter edge and a snap element of the carrier unit.

For aesthetic reasons, but also for reasons of stability and in view of the ease of manufacture and releasability of the respective snap connection, the snap profile is preferably formed from an outward and downward direction and then towards the inside of the gutter to angled edge strips of a lateral boundary wall of the gutter. With such a design of the snap profile, the carrier unit can be designed with a carrier surface which, in the assembled state, bears against an associated lateral boundary wall of the gutter and points to the space between this lateral boundary wall and the associated snap profile, while a snap hook is attached to the carrier surface, which comes into snap connection with the edge strips angled towards the gutter interior when the respective boundary wall of the gutter is placed on the support surface. The placement and the making of the snap connection can be made even easier by the fact that an insertion bevel is provided on the snap hook and / or on the edge strip.

In order not to hinder the full support of the respective lateral boundary wall of the gutter on the support surface, it is recommended that the snap hook is attached to the side of the support surface which is remote from the gutter. Since the support surface is regularly formed by a thin sheet-like component, the engagement of the snap hook behind the profile-forming edge strips of the respective boundary wall of the gutter is hardly hindered by the wall thickness of this component.

The snap hook is preferably attached in the region of a recess in the respective carrier surface. This facilitates an elastic Deformation of the snap hook in the event that the gutter is to be removed from one or more support units.

A particularly simple installation of the gutter is obtained when the support unit has two support surfaces which conform approximately to the profile of the underside of the gutter and when these two support surfaces are in each case connected to a boundary wall of the gutter with a snap connection each with a snap profile on the upper edge of this boundary wall. The interlocking parts of the snap connections can be essentially identical and can be configured as indicated above.

The drainage system according to the invention can be carried out particularly precisely with gutters which have an essentially V-shaped underside profile; in this case the carrier unit is designed with two carrier surfaces which are approximately matched to this V-shaped profile.

The V-shaped profile of the gutter represents a significant advance over the prior art, regardless of the type of fastening by means of snap connections and should therefore also enjoy protection regardless of the installation using snap connections. So far, gutters have usually been designed with a semi-cylindrical profile, as well as so-called box gutter parts with a rectangular profile. In both cases, the water-bearing sole of the inner profile is relatively flat, so that a water flow flowing there is relatively wide and shallow. This was previously considered desirable because a flat sole profile was expected to provide favorable transport conditions for foreign objects entering the gutter through the respective trickle. It has been shown that this expectation does not match the actual Conditions did not correspond and it has now surprisingly been found that with V-shaped profiling of the gutter, because of the greater depth of the water flow even with a lower water flow strength, foreign bodies such as leaves are more reliably removed, even if the gutter has a slight slope.

In the roof drainage systems that have been customary up to now, considerable manual work is required in order to distribute a gradient specified by the construction plans to a certain extent evenly over a certain channel length. It is often necessary for this to bend the gutter hooks after they have already been attached to the roof structure and / or to install compensating layers between the gutter hooks and gutter. In contrast, it is proposed here that the support unit has a first support part designed for attachment to the roof construction and furthermore has a second support part designed for attachment to the first support part, which is adjustable relative to the first support part, in particular higher adjustable, and to which the gutter can be connected.

By adjusting the second support part relative to the first support part, the setting of a constant slope along a gutter is made considerably easier. It should not be ruled out that an essentially horizontal adjustment of the second support parts with respect to the first support parts is also used in order to allow compensatory measures in the event of an irregular horizontal course of the gutter path. Height adjustment and side adjustment can be combined. In general, the height adjustment will be of greater importance in practice. This adjustability of the two parts of a support unit to one another is always applicable, regardless of how the gutter is and should be attached to the support units therefore be protected regardless of the type of attachment. A particularly simple height adjustment can be achieved by means of an elongated bolt connection between the two support parts.

It was mentioned at the beginning that gutters are usually provided with drainage housings in order to be able to drain the water from the gutter either in free fall or by means of a downpipe. Attention has also been drawn to the previous difficulties in fastening a drainage housing to a gutter. In order to create assembly times and thus cost-saving remedies, it is further proposed that the drain housing can be connected to the gutter by at least one snap connection. The application of the snap connection principle between drain housing and gutter brings significant advantages, regardless of the shape of the gutter and what type of fastening between gutter and support units is used. Therefore, the snap connection principle between drain housing and gutter should in turn enjoy independent protection.

The snap connection between the drain housing and the gutter can be designed similarly or identically to the snap connection between the gutter and support unit, because the drain housing rests on the underside of the gutter profile in an analogous manner to the system between the support unit and the gutter. The above-mentioned possibilities of forming snap connections between the support unit and the gutter therefore also apply to the connection of the drain housing and the gutter. In particular, a drainage housing can be designed with at least one snap element, which is designed for connection to a snap profile on the upper edges of two lateral boundary walls of the gutter. The snap elements can similar to the snap elements described above, be designed as snap hooks on the carrier units.

A particularly easy-to-manufacture form of the connection housing is obtained if it is carried out with two end walls spaced in the longitudinal direction of the gutter, correspondingly trimmed to the outer profile of the gutter and connecting end walls connecting these end walls, this connecting wall essentially forming an axially parallel prism to the gutter profile. The drain housing thus obtained then forms an essentially closed drain chamber with the outer profile of the gutter. The drain housing can be stabilized and, at the same time, better sealed against the gutter if, as a complement to the prism, edge flanges run between the end walls of the drain housing and attach themselves to the outer profile of the gutter.

In such an embodiment, the water transfer from the gutter into the drain housing can be accomplished by a simple drainage opening of the gutter in the overlap area of the drain housing. This opening does not require any special design, apart, of course, from the fact that its edges should be designed in such a streamlined manner that no foreign bodies are retained on them. A production-related, but also architecture-aesthetically preferred design of the drainage housing is obtained if it has a substantially V-shaped profile in a section orthogonal to the longitudinal gutter extension.

A drain pipe can then be connected to at least one of the connecting walls of the drain housing, which drain pipe can be designed for connection to a down pipe, but can also be shaped, for example, as a gargoyle. From those mentioned above with regard to the transport conditions for foreign bodies For reasons it is recommended that the drain pipe is also triangular in cross section and connects to a corresponding triangular opening of the respective connecting wall. The triangular opening of the connecting wall is preferably formed such that a triangular tip lies in the bottom area of the drainage housing and a side opposite this triangular tip runs essentially parallel to the longitudinal gutter extension at a distance from the bottom area.

If a downpipe is to be connected to the drain pipe, depending on the design of the structure, this can either be guided vertically and straight down from the bottom area of the channel. However, if a ledge is provided at the transition between the roof structure and the outer wall of a building, and if you want to lay the downspout as close as possible to the outer wall despite this ledge, you can design the drain pipe as a pipe bend, which is initially horizontal with a side wall of the drain housing Directional component is transverse to the longitudinal direction of the gutter and is then deflected into the vertical. Such a pipe elbow can easily be obtained by welding two pipe sections which are cut off at their ends at an acute angle against the respective pipe axis.

The downpipes made up of conical shots, which have been used regularly up to now, can be easily attached by sequentially inserting the downpipe shots during initial assembly. But the greatest difficulties arise when a single shot is to be exchanged, either because it is damaged or because the piping work or painting work is to be carried out on the outer wall behind it. In order to eliminate the difficulties of replacing or temporarily removing a downpipe shot, it is therefore further proposed that the downpipe be removed non-overlapping downpipe sections, in particular with a triangular cross section, is formed, the mutually facing ends of which are spaced from one another, and that telescopic connecting pieces are provided for connecting these mutually facing ends, which each encompass one of the mutually facing ends of the downpipe sections on the outside, and with each engage a smaller end section in the other end or vice versa.

This idea is also independent of the design and attachment of the gutter, the design of the drain housing and the cross-sectional shape of the downpipes. This idea should therefore also enjoy independent protection. The initial construction of a downpipe designed in this way and the replacement of a downpipe section becomes particularly simple if the telescopic connecting pieces are each designed with a fastening element for fastening to a structural part. It can then be constructed in such a way that the larger cross-sectional end section is directed upwards and the smaller-diameter end section is directed downwards and that a downpipe section arranged between two telescopic connecting pieces has its lower end resting on a transition shoulder between the different-diameter end sections of the associated telescopic connecting piece, whereby to dismantle this downpipe shot it can be raised between two successive telescopic connecting pieces to such an extent that its lower downpipe end comes to lie above the upper end of the associated telescopic connecting piece and the downpipe shot can then be pulled off from the lower end section of the associated upper telescopic connecting piece by pivoting its lower end sideways.

In such an embodiment, the downpipe sections are secured in their respective position by gravity. Around but also in the event of improper action, for example by children playing, to avoid defects, it is further proposed that the telescopic connection piece and / or an associated fastening means for fastening to the structural part be connected to a tensioning collar, which in each case above or below the downpipe sections adjacent to the telescopic connection piece. engages below the upper or lower end of the telescopic connecting piece and can be tensioned against the adjacent downpipe sections by means of a tension lock.

The construction measures described above on support units, gutters, drain housings and downpipes can basically be used, regardless of the material from which the individual components are made. The roof drainage system according to the invention is preferably constructed as far as possible from stainless steel parts. Due to their elastic properties, these are particularly suitable for the production of snap connections. They are easy to weld and avoid the environmental problem of draining sulfate-contaminated wastewater from copper roofing parts.

As far as the gutter or gutter sections are made with a V-profile, it is advisable to make the side walls slightly convex, that is, when viewed from the outside, to bend convexly around an axis parallel to the longitudinal direction of the gutter. Even a slight curvature is sufficient to significantly increase the stability of the channel and to maintain such stability even in the case of thin-walled sheet metal that visually unsightly and unfavorable drainage and wrinkles are avoided.

The invention further relates to the connection of successive gutter sections of the gutter. So far, the connection of successive gutter sections has mostly been established by overlapping and riveting or soldering. These two connection measures are labor intensive. The invention therefore further proposes that when the gutter is constructed from at least two successive gutter sections, they are designed to overlap at the ends facing one another and are connected to one another by a separate connecting unit which overlaps each of the ends facing one another. This type of connection should also enjoy separate protection.

A first simple and labor-saving way of gutter connection is that the connection unit is designed as a plug-in connection unit with insertion pockets for each of the two mutually facing ends of adjacent gutter sections.

Sealing means can be accommodated in the connecting pockets to seal the connection point. In principle, it is possible to introduce permanently elastic putty as a sealant. A preferred type of sealant, however, is the use of sealing profiles made of elastomeric material.

A connecting unit suitable for a plug connection can be formed by two layers of material which are connected to one another at the middle point of their longitudinal extent and are spaced apart from one another in the two end regions of their longitudinal extent to form pockets.

These layers of material preferably consist of the same material as the gutter sections. The connection units can take on the function of stiffening, in particular when the gutter sections are made of thin sheet metal.

In order to be able to install the sealing means in such a way that they do not hinder the plugging together and also cannot be damaged, it is proposed that a profile channel for receiving sealing means be provided in at least one of the material layers, preferably the outer material layer.

While in known roof drainage systems the replacement of a gutter section that has become unusable requires a considerable amount of work, the workload when using a plug connection unit can be considerably reduced by the fact that the mutually facing ends of adjacent gutter sections are only inserted into the pockets and are at such a distance from one another that they can be moved the connecting unit in the longitudinal direction of the channel that one channel end can be released from engagement with the associated pocket. You can then easily remove the gutter section to be replaced by first moving the connector unit at one end, then pivoting the gutter section out of the alignment line at this end and then pulling it out of the connecting unit facing the other end.

An alternative to the plug connection unit is that the connection unit is formed by an outer shell and an inner shell, each of which at least are approximately adapted to the outer profile or inner profile of the gutter sections and that the two shells, inner shell and outer shell, are connected to one another by connecting means which become effective when the gutter is laid. With this type of connection, too, the work involved in laying and repairing is largely reduced. While the connector unit has the advantage of fewer parts and thus simplified storage, the latter type of connection with two separate shells has the advantage that the threading work when plugging together is avoided and the seals can be pressed in even better.

The connecting means can preferably be accommodated in the region of a gap between adjacent channel end ends. Providing such a gap is also recommended for reasons of thermal expansion.

The connection means between the two shells can be designed as snap connection means, wherein the snap connection means can be designed in the same or a similar way as the connection means described and claimed in connection with the attachment of a drain housing. The connecting means can also be formed by clamping screws, dowels or the like. The disadvantage of the more complex fastening work is made up for here by the possibility of tightly pressing in sealants. The sealing means can be attached to at least one of the shells, preferably the outer shell, preferably again in profile channels.

In order to ensure a sufficient overlap of the connection unit with both adjacent gutter ends, It can be provided that a centering and / or stiffening rib engaging between the ends of the channel sections is attached to at least one of the shells, preferably to the inner shell.

The type of connection between successive gutter sections described above can of course also be used when it is important to connect a gutter section to a gutter end piece.

Alternatively, however, it is also possible for an end piece to be formed with an insertion pocket into which the respectively adjacent end of the gutter section can be inserted, again using a seal. The design of such a pocket-shaped gutter end is analogous to the design of a plug connection unit.

Above, the possibility of installing a special drain housing at the middle point of a gutter section was discussed. Alternatively, there is also the possibility that a connection unit and / or an end piece is equipped with a drainage device. Such a solution naturally requires that a separation point between successive gutter sections must be provided at the location of the downpipe provided by the architect, if necessary by shortening a gutter section accordingly. The advantage of this solution, however, is that the need to pierce the gutter section is avoided and all drainage restriction surfaces can be manufactured smoothly and in a manner that is easy to drain, while piercing a gutter section at the installation site requires considerable care on the part of the craftsman.

The connection unit or the end piece can be expanded in the area of the drain to a drain housing, which can be done by drawing technology, but also by factory composition from individual sheet metal blanks by means of soldering.

Fig. 1

eine Gesamtansicht eines erfindungsgemäßen Dachentwässerungssystems an einem Gebäude;

Fig. 2

eine Explosionszuordnung von Dachrinne, Abflußgehäuse und Ablaufstutzen;

Fig. 3

einen Schnitt durch eine Verbindung zwischen Dachrinne und Abflußgehäuse;

Fig. 4

eine Explosionszuordnung von Trägereinheit und Dachrinne;

Fig. 5

einen Schnitt durch eine Verbindungsstelle zwischen einer Trägereinheit und einer Dachrinne;

Fig. 6

eine Ansicht eines Fallrohrs;

Fig. 7

das Detail einer Verbindungsstelle zwischen zwei aufeinanderfolgenden Fallrohrschüssen;

Fig. 8

eine Rinnenschußverbindung vermittels einer Steckverbindungseinheit;

Fig. 9

eine Rinnenschußverbindung mittels einer zweischaligen Überlappverbindungseinheit mit Schnappverbindung zwischen den beiden Schalen;

Fig. 10

eine Rinnenschußverbindung mittels einer zweischaligen Überlappverbindungseinheit mit Schraubverbindung zwischen den beiden Schalen;

Fig. 11

ein Endstück für eine Dachrinne mit Steckverbindungstasche zum Aufstecken an ein benachbartes Rinnenschußende;

Fig. 12

eine Abwandlung des Endstücks nach Fig. 11;

Fig. 13

einen Rinnenschuß mit Ablauf und

Fig. 14

eine Steckverbindungseinheit, welche gleichzeitig als Ablaufgehäuse ausgebildet ist.

The accompanying figures explain the invention using an exemplary embodiment. They represent:

Fig. 1

an overall view of a roof drainage system according to the invention on a building;

Fig. 2

an explosion assignment of gutter, drain housing and drain socket;

Fig. 3

a section through a connection between the gutter and drain housing;

Fig. 4

an explosion assignment of the carrier unit and gutter;

Fig. 5

a section through a connection point between a support unit and a gutter;

Fig. 6

a view of a downpipe;

Fig. 7

the detail of a connection point between two successive downpipe sections;

Fig. 8

a gutter weft connection by means of a connector unit;

Fig. 9

a gutter weft connection by means of a double-shell overlap connection unit with a snap connection between the two shells;

Fig. 10

a gutter weft connection by means of a two-shell overlap connection unit with screw connection between the two shells;

Fig. 11

an end piece for a gutter with a plug-in pocket for plugging onto an adjacent gutter end;

Fig. 12

a modification of the end piece of FIG. 11;

Fig. 13

a gutter shot with drain and

Fig. 14

a connector unit, which is simultaneously designed as a drain housing.

In Fig. 1, an outer wall of a building is designated 10 and the roof structure with 12. On the lower edge of this roof structure 12, a gutter 14 is laid and supported by support units 16.

A drain housing 18 is attached to the gutter 14, to which a downpipe 20 connects.

2 and 3 illustrate the connection of the gutter 14 to the drain box 18.

The gutter 14 is designed with a V-profile, which has an opening angle of 45 ° to 120 °, preferably about 60 °. This gutter 14 is made of stainless steel sheet by bending and is composed of two boundary walls 14a. An edge strip 14c is formed into a snap profile on each of the boundary walls 14a in the region of the upper edge 14b. This snap profile, also designated 14c for the sake of simplicity, is composed of a downward-pointing partial strip 14ca and an inward-pointing partial strip 14cb. The drain housing 18 is hooked onto this gutter 14 by snap elements 18e.

The drain housing is formed by V-shaped end walls 18a, which are spaced in the longitudinal direction of the gutter 14 and are connected to one another by connecting walls 18b, 18c and edge flanges 18d. The connecting wall 18b, 18c and edge flanges 18d can each be integrally connected and butt welded to the end walls 18a. The snap elements 18e are riveted to the connecting walls 18c in the form of snap hooks or fastened by spot welding. The snap hooks have instruction bevels 18f at their upper ends.

To fasten the drainage housing 18, it is pushed onto the gutter 14 from below, so that the contact flanges 18d approach the boundary walls 14a. The snap hooks 18e slide with their guide bevels 18f over the inward edges of the partial strips 14cb and engage behind them, so that the edge flanges 18d rest against the boundary walls 14a. So that the connector housing 18 is attached to the gutter 14.

An opening 14g is provided in the sole area 14f of the gutter 14 and is covered by the drainage housing. A drain chamber 22 is delimited between the gutter 14 and the drain housing. This drain chamber is followed by a drain pipe 24 with a triangular cross section, which runs somewhat obliquely downwards perpendicularly to the channel axis, as shown in FIG. 2. This drain pipe 24 is butt welded to the boundary wall 18b and is communicated with a drain opening 18h, the tip 18i of which is in the vicinity of the sole area 18k and the upper edge 18l of which runs parallel to the gutter axis. The drain pipe 24 is combined with another pipe section 26 to form a pipe bend 24, 26 to which a down pipe can be connected. This downpipe will be discussed later.

First, however, the fastening of the gutter 14 by means of the support units 16 is discussed. As can be seen from FIGS. 4 and 5, a carrier unit consists of two carrier parts 16a and 16b. The carrier part 16a is formed from an angled sheet metal which has fastening holes 16ab for fastening to the roof structure and a threaded bolt 16ac in its lower angled region. The carrier part 16b is formed from a single sheet metal strip with the carrier surfaces 16ba, 16bb, an upper flange 16bc, a rear wall 16bd and a bottom part 16be, which abuts the sole region 16bf and is optionally welded. An elongated hole 16bg is provided in the rear wall 16bd, which can be inserted over the threaded bolt 16ac. A nut can then be screwed onto the threaded bolt 16ac in order to clamp the rear wall 16bd with the carrier part 16a. After loosening the nut, a height adjustment of the carrier part 16b relative to the carrier part 16a is possible; In order to secure the carrier part 16b against rotation with respect to the carrier part 16a, guide flanges 16bh are provided on the former.

Windows 16bi are notched on the support surfaces 16ba and 16bb. On the outer sides of the support surfaces 16ba and 16bb, i.e. Snap hooks 16bl are riveted or dotted onto the sides remote from the groove 14 to be received. These snap hooks 16bl snap when the gutter 14 is lowered into the V-profile formed by the support surfaces 16ba and 16bb behind the partial strips 14cb of the snap profiles 14c, so that the gutter 14 is secured against unintentional lifting out of the support parts 16b. Snap-in is also facilitated here by the 16bm instruction bevels. The snap hooks 16bl are slightly curved and pre-curved in the sense of being lifted off the support surfaces 16ba and 16bb. If the gutter 14 is to be released from the carrier part 16b, the snap connections can be released by pressing against the snap hooks 16bl with a tool and simultaneously lifting the gutter 14.

The height adjustment of the support part 16b is also possible after inserting the gutter 14, since the nut 16ad to be screwed onto the threaded bolt 16ac is still accessible even after the gutter 14 has been placed on.

6 and 7, the downpipe 20 is now shown in detail, which can connect to the elbow 24, 26 according to FIG. 2. This downpipe 20 consists of several prismatic, non-tapered sections 20a, 20b and 20c, which have a triangular cross section. Telescopic connecting pieces 28 are provided between successive shots 20a to 20c, each of which has an upper section 28b for pushing over the downwardly extending downpipe section 20a or 20b and a downwardly smaller section 28a for insertion into a downward downward pipe section 20b or 20c . The upper sections 28b are each on a fastening flange 30 of a wall anchor 32 fixed by spot welds 34. During assembly, the wall anchors 32 are placed at intervals that are somewhat larger than the lengths of the downpipe sections 20a to 20c. Then the individual shots are set individually, namely the shot 20b is set so that its lower edge 20ba is seated on a shoulder 28c which connects the two sections 28a and 28b of the respective telescopic connector 28 to one another. Before this, however, the upper end 20bb must be moved upwards via the associated section 28a until the lower end 20ba of the shot 20b can be swiveled in over the upper edge 28d in alignment with the axis of the telescopic connecting piece 28. Only then can the downpipe section 20b be lowered in the direction of the shoulder 28c. When this stands on the shoulder 28c, the upper end 20bb of the downpipe section 20b still encompasses the lower section 28a of the telescopic connecting element 28, which is reduced in cross-section. The downpipe section 20b is thus secured against lateral deflection at the top and bottom. A downpipe shot 20b can, however, be removed after it has been raised again so far that its lower end 20ba has come over the upper edge 28d of the telescopic connector 28 and can then be swung out laterally with its lower end and pulled off downwards. The downpipe sections 20b must of course have a corresponding play with respect to the lower sections 28a of the telescopic connecting pieces 28 in order to enable the respective lower section ends to be pivoted out laterally.

A cuff 36, which is shown in FIG. 7, serves to prevent individual downpipe shots being deliberately removed. The cuff is composed of the fastening flange 30 and the cuff angle 38 according to FIG. 6, which is placed against the fastening flange 30 with edge flanges 38a and is secured to the fastening flange 30 by locking bolts 38b. The edges 38c of the cuff angle 38 lie against the adjacent ones Shots 20b and 20c. At a medium height, the cuff angle 38, as can be seen from FIGS. 6 and 7, is bulged so that it overlaps the telescopic connecting piece 28. The downpipe sections are secured against lifting out of the respective telescopic connecting piece 28 by the clamping action of the cuff angle 38.

All parts of the roof drainage system, with the exception of the locking bolts 38b, can be made of stainless steel. However, production from any other material is conceivable, in particular also from copper sheet or plastic.

8 shows an exploded view of the ends of two mutually adjacent gutter sections 14 and between them a connector unit 40. The connector unit 40 is formed at both ends with an insertion pocket 40a, which is formed between two layers of material 40b and 40c. A profile channel 40d is formed in the material layer 40b, which receives a sealing profile 40e made of elastomeric material. The insertion pocket 40a extends essentially over the entire circumference of the channel profile of the channel sections 14. The channel section ends can be inserted in the respective pocket in the direction of the arrow and slide past the correspondingly designed sealing profiles 40e. Threading bevels (not shown) can be formed at the outputs of the insertion pockets 40a in order to facilitate insertion. In the assembled state, the end edges 14k do not extend as far as the respective pocket bottom 40f, but are at such a distance from this that a temperature compensation movement is possible on the one hand, and on the other hand the connecting unit 40 can also be displaced if necessary that one of the channel end ends 14k is sufficient the associated pocket emerges and the associated gutter section can then be swung out of the escape line and pulled off.

An alternative is shown in FIG. The connection unit 140 is here composed of an inner shell 140a and an outer shell 140b. Edge profiles 140a1 are formed on the inner shell 140a and overlap the snap profiles of the channel sections 14. The inner shell 140a has a centering profile 140a2 in the longitudinal center. Profile grooves 140b1 are formed on the outer shell 140b for receiving sealing profiles 140b2. In the central longitudinal section of the outer shell 140b there is a counter profile 140b3 for cooperation with the centering profile 140a2. Elastic snap hooks 140b4 are attached to the bottom of the counter profile 140b3 and are intended for engagement with snap tabs 140a3 of the edge profiles 140a1. The end edges 14k of the channel sections 14 are at a distance from one another which corresponds approximately to the width of the centering profiles 140a2. During assembly, the shells 140a and 140b are placed on the inside and outside of the channel sections 14 and pressed together so that the elastic snap hooks 140b4 snap behind the snap tabs 140a3. A solution is possible by pressing the snap hooks 140b4 inwards with a tool. The seals 140b2 are compressed during assembly.

The embodiment according to FIG. 10 differs from that according to FIG. 9 only in that the inner shell 240a and the outer shell 240b are clamped together by screws or dowels 244, which are screwed in through holes 240a5 in threaded holes 240b5, if necessary in a self-tapping manner.

FIG. 11 shows an end piece 50 for a gutter section 40. At the end piece 50, an insertion pocket 50a is formed, into which the gutter section 40 can be inserted. A profile channel 50b is formed in the outer material layer of the insertion pocket 50a, which receives a sealing profile 50c. The assembly is carried out as described in connection with Figure 8.

Figure 12 differs from the embodiment of Figure 11 only in that the end piece 50 has a rounded shape.

FIG. 13 shows a channel section 214 which is bulged to form a drain housing 214a. The snap profiles of this gutter section are designed exactly as described in connection with FIG. 2. This special channel section can be connected to adjacent normal channel sections 14 by connecting units according to FIG. 9 or 10.

FIG. 14 shows a connection unit 340 which is formed at its ends with insertion pockets 350 for inserting adjacent gutter sections 14. This connection unit is also expanded to a drain box 340a. The insertion pockets are designed as described in connection with FIG. 8.

Claims (51)

Roof drainage system, comprising at least one gutter (14) which can be fastened at intervals along its essentially horizontal longitudinal extent to the roof structure (12) by support units (16) and at least one drain device (18) adjoining the gutter (14), which may be connected an essentially vertical downpipe (20) connects,
characterized,
that the gutter (14) on the support unit (16) by at least one snap connection (16bl, 14c) can be fixed. Roof drainage system according to claim 1,
characterized,
that the at least one snap connection (16bl, 14c) between a snap profile (14c) on a gutter edge (14b) and a snap element (16bl) of the carrier unit (16) can be produced. Roof drainage system according to claim 2,
characterized,
that the snap profile (14c) is formed from an outward and downward and then towards the inside of the gutter to angled edge strips (14c - 14cb) of a lateral boundary wall (14a) of the gutter (14). Roof drainage system according to claim 3,
characterized,
that the support unit (16) has a support surface (16ba) which, in the assembled state, bears against an associated lateral boundary wall (14a) of the gutter (14) and points to the space between this lateral boundary wall (14a) and the associated snap profile (14c) , and that a snap hook (16bl) is attached to the support surface (16ba), which comes into snap connection with the edge strip (14c - 14cb) angled toward the gutter interior, whereby on the snap hook (16bl) and / or on the edge strip (14c - 14cb) an introduction slope (16bm) is provided. Roof drainage system according to claim 5,
characterized,
that the snap hook (16bl) is attached to the side of the support surface (16ba) remote from the gutter. Roof drainage system according to claim 5,
characterized,
that the snap hook (16bl) is attached in the region of a recess (16bi) of the support surface (16ba). Roof drainage system according to one of claims 2 to 6,
characterized,
that the support unit (16) has two support surfaces (16ba, 16bb), each of which has a snap connection (16bl, 14c) adjacent to a boundary wall (14a) of the gutter (14) each with a snap profile (14c) on the upper edge (14b) thereof Enter boundary walls (14a). Roof drainage system, in particular according to one of claims 1 to 7,
characterized,
that the gutter (14) has an essentially V-shaped profile and that the support unit (16) has two support surfaces (16ba, 16bb) which are approximately matched to this V-shaped profile. Roof drainage system according to claim 8,
characterized,
that the side walls (14a) of the V-shaped profile are convexly curved outwards about an axis of curvature parallel to the longitudinal direction of the channel. Roof drainage system, in particular according to one of claims 1 to 9,
characterized,
that the carrier unit (16) has a first carrier part (16a) designed for fastening to the roof structure (12) and furthermore a second carrier part designed for fastening to the first carrier part (16a), which is adjustable relative to the first carrier part (16a), in particular higher adjustable (16b) with which the gutter (14) can be connected. Roof drainage system, in particular according to one of claims 1 to 10,
characterized,
that the gutter (14) is assigned a drain housing (18) which is adapted to the outer profile of the gutter, and that this drain housing (18) can be connected to the gutter (14) by at least one snap connection (18e, 14c). Roof drainage system according to claim 11,
characterized,
that the drain housing (18) is equipped with at least one snap element (18e) which can be connected to a snap profile (14c) attached to the upper edge (14b) of a boundary wall (14a) of the gutter (14), in particular with a snap profile (14c) which is also intended and suitable for connecting the gutter (14) to a support unit (16). Roof drainage system according to claim 12,
characterized,
that the drain housing (18) is formed with at least one snap element (18e) for connection to a snap profile (14c) on the upper edges (14b) of two boundary walls (14a) of the gutter (14). Roof drainage system according to one of claims 11 to 13,
characterized,
that the drainage housing (18) has two end walls (18a) which are spaced apart in the longitudinal direction of the gutter and match the outer profile of the gutter and which connect these end walls (18) to one another and which run essentially parallel to the boundary walls (14a) of the gutter, lateral connection walls (18b, 18c) such that the drain housing (18) forms an essentially closed drain chamber (22) with the outer profile of the gutter (14). Roof drainage system according to claim 14,
characterized,
that between the end walls (18a) of the drain housing (18) also run upper edge flanges (18d) which rest on the outer profile of the gutter (14). Roof drainage system according to one of claims 11 to 15,
characterized,
that the gutter (14) has a drainage opening (14g) in the area of the overlap of its outer profile through the drain housing (18). Roof drainage system according to one of claims 11 to 16,
characterized,
that the drain housing (18) has a substantially V-shaped profile in a section orthogonal to the gutter longitudinal extension. Roof drainage system according to one of claims 14 to 17,
characterized,
that a drain pipe (24) connects to at least one of the connecting walls (18b) of the drain housing (18). Roof drainage system according to claim 18,
characterized,
that the drain pipe (24) is designed for connection to a down pipe (20). Roof drainage system, in particular according to one of claims 1 to 19,
characterized,
that the gutter has a drain pipe (24, 26) which is triangular in cross section and which adjoins a corresponding, in particular also triangular opening (18h) of the gutter or a wall (18b) of a drain housing (18). Roof drainage system according to claim 20,
characterized,
that the side walls of the drain pipe (24, 26) are convexly curved outwards, specifically about an axis of curvature parallel to the longitudinal direction of the drain pipe. Roof drainage system according to claim 21,
characterized by
that the triangular opening (18h) of a connecting wall (18b) of the drainage housing is designed such that a triangular tip (18i) lies in the sole region (18k) of the drainage housing (18) and a triangular side (18l) opposite this triangle tip is essentially parallel to the gutter longitudinal extension in Distance runs from the sole area. Roof drainage system according to one of claims 18 to 22,
characterized,
that the drain pipe (24, 26) is designed as a pipe bend (24, 26) which is from a side wall (18b) of the drain housing (18) initially with a horizontal directional component transverse to the longitudinal direction of the gutter (14) and then into the vertical is redirected. Roof drainage system, in particular according to one of claims 1 to 23,
characterized,
that the downpipe (20) is formed by non-overlapping downpipe sections (20a, 20b, 20c), in particular with a triangular cross section, the mutually facing ends (20ba, 20cb) of which are spaced from one another, and that for connecting these mutually facing ends (20ba , 20cb) telescopic connecting pieces (28) are provided, which each encompass one end (20ba) of the mutually facing ends (20ba, 20cb) of the downpipe sections with a larger end section (28b) and each with a smaller end section (28a) into the other Intervene at the end (20cb) or vice versa. Roof drainage system according to claim 24,
characterized by
that the telescopic connector (28) is designed with a fastening element (30, 32) for fastening to a structural part (10). Roof drainage system according to claim 25,
characterized,
that the cross-sectionally larger end section (28b) is directed upwards and the smaller-diameter end section (28a) each points downwards and that a downpipe section (20a, 20b, 20c) arranged between two telescopic connecting pieces (28) has its lower end (20ba) on each other a transition shoulder (28c) lies between the different diameter end sections (28b, 28a) of the associated telescopic connection piece (28), whereby to dismantle this downpipe section (20b) it can be lifted between two successive telescopic connection pieces (28) to such an extent that its lower end pipe end (20ab) comes to rest over the upper end (28d) of the associated telescopic connecting piece (28) and the downpipe section (20b) can then be pulled off from the lower end section of the associated upper telescopic connecting piece (28) after its lower end (20ba) has been swung out sideways. Roof drainage system according to claim 26,
characterized,
that the telescopic connecting piece (28) and / or an associated fastening means (32) for fastening to the structural part (10) is connected to a tensioning collar (36) which connects the downpipe sections (20b, 20c) adjacent to the telescopic connecting piece (28) above or respectively grips below the upper or lower end of the telescopic connecting piece (28) and can be tensioned against the adjacent downpipe sections (20b, 20c) by means of a tension lock (38b). Roof drainage system according to one of claims 1 to 27,
characterized,
that the gutter (14) and / or the connection unit (18) or / and the downpipe (20) or / and the support units (16) are at least partially made of stainless steel sheet. Roof drainage system according to one of claims 1 to 28,
characterized,
that the downpipe (20) is essentially triangular in cross section. Roof drainage system according to claim 29,
characterized,
that the side walls of the downpipe are convex to the outside are curved with an axis of curvature substantially parallel to the longitudinal direction of the downpipe (20). Roof drainage system according to one of claims 29 and 30,
characterized,
that the edges of the triangular downpipe are rounded. Roof drainage system, in particular according to one of claims 1 to 31,
characterized,
that when the gutter is constructed from at least two successive gutter sections (14), these are designed so that they do not overlap at the mutually facing ends (14k) and are connected to one another by a separate connecting unit (40) which overlaps each of the mutually facing ends (14k). Roof drainage system according to claim 32,
characterized,
that the connection unit (40) is designed as a plug-in connection unit with insertion pockets (40a) for each of the two mutually facing ends (14k) of adjacent gutter sections (14). Roof drainage system according to claim 33,
characterized by
that sealing means (40e) are accommodated in the insertion pockets (40a). Roof drainage system according to claim 34,
characterized,
that the sealing means (40e) are formed by elastic sealing strips. Roof drainage system according to one of claims 33 to 35,
characterized,
that the connecting unit (40) is formed from two layers of material (40b, 40c) which are connected to one another at the middle point of their longitudinal extent and are spaced apart from one another in the two end regions of their longitudinal extent to form pockets. Roof drainage system according to claim 36,
characterized by
that in at least one of the material layers (40b, 40c), preferably the outer material layer (40b), a profile channel (40d) is provided for receiving sealing means (40e). Roof drainage system according to one of claims 33 to 37,
characterized,
that the mutually facing ends (14k) of adjacent channel sections (14) are only inserted into the insertion pockets (40a) to such an extent and are at such a distance from one another that by moving the connecting unit in the longitudinal direction of the channel one channel end (14k) from engagement with the associated pocket ( 40a) is detachable. Roof drainage system according to claim 32,
characterized,
that the connecting unit (140) is formed by an outer shell (140b) and an inner shell (140a), each of which are at least approximately matched to the outer profile or inner profile of the channel sections (14) and that the two shells, inner shell (140a) and outer shell ( 140b) are connected to one another by connecting means (140b4, 140a3) which become effective when the gutter is laid. Roof drainage system according to claim 39,
characterized,
that the mutually facing ends (14k) of adjacent gutter sections (14) are at a distance from one another and that the connecting means (140b4, 140a3) are provided in the region of this distance. Roof drainage system according to one of claims 39 and 40,
characterized by
that the connection means (140b4, 140a3) between the two shells (140b, 140a) are designed as snap connection means. Roof drainage system according to one of claims 39 and 40,
characterized by
that the connecting means (240b5,240a5) are formed by clamping screws, dowels or the like. Roof drainage system according to one of claims 39 to 42,
characterized,
that sealing means (140b2) are attached to at least one of the shells (140b, 140a), preferably the outer shell (140b). Roof drainage system according to claim 43,
characterized,
that the sealing means (140b2) are housed in profile channels (140b1) of the outer shell (140b). Roof drainage system according to one of claims 39 to 44,
characterized,
that at least one of the shells (140b, 140a), preferably on the inner shell (140a), has a centering and / or stiffening rib (140a2, 140b3) engaging between the ends (14k) of the channel sections (14). Roof drainage system according to one of claims 39 to 45,
characterized,
that the mutually facing ends (114k) of the channel sections (14) from each other and with respect to the connecting unit (140) have a space for thermal expansion. Roof drainage system according to one of claims 32 to 46,
characterized,
that one of the gutter sections is formed by a gutter end piece (50). Roof drainage system, in particular according to one of claims 1 to 47,
characterized by
that the at least one gutter has at least one end piece (50) which is designed with an insertion pocket (50a) for connection to a gutter end. Roof drainage system according to claim 48,
characterized by
that the insertion pocket (50a) of the end piece (50) receives sealing means (50c). Roof drainage system according to one of claims 32 to 49,
characterized by
that a connecting unit (340) and / or an end piece (50) is equipped with a drain device (340a). Roof drainage system according to claim 50,
characterized by
that the connecting unit (340) or the end piece is expanded to a drain housing (340a) with a drain opening.

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