ROOF CONSTRUCTION

Description

[0001] The invention relates to a roof construction with a supporting frame which is supported by means of a supporting structure and has at least two longitudinal beams arranged parallel to one another and at a distance from one another and at least two cross beams arranged parallel to one another and at a distance from one another and which surrounds a frame field, and with at least one rafter which connects the cross beams to one another, runs at a distance from the longitudinal beams and divides the frame field into several roof fields, wherein at least one of the roof fields is covered by a cover plate and wherein a water channel is formed in or on the rafter, which runs in the longitudinal direction of the rafter and opens into a collecting channel via a water outlet in its axial end region. The document DE 3637715 A1 discloses such a roof construction.

[0002] A roof structure of this type can be, for example, the roof of a conservatory, a building extension, or a pavilion. The preferably flat supporting frame can be rectangular and consist of two parallel and spaced-apart longitudinal beams and two parallel and spaced-apart cross beams.

[0003] In order to support the supporting frame, a supporting structure is provided, which consists of columns and / or building parts or other supporting elements to which the supporting frame is attached and via which the loads of the supporting frame can be safely transferred.

[0004] Inside the supporting frame, a frame section is formed, enclosed by the longitudinal beams and the cross beams, which is divided into several roof sections by at least one rafter that connects the cross beams to one another. At least one roof section, and preferably all of the roof sections, are each covered by a flat cover plate, in particular made of glass, wood, metal, or plastic, so that objects or people standing below the supporting frame are protected from rain. When it rains, the rain falls from above onto the cover plates and must be drained away by them. For this purpose, it is known to arrange the cover plates at an angle relative to a horizontal plane so that the water on the upper side of the cover plates can drain away. For this purpose, a water channel can be formed in the rafter, into which the water on the upper side of the cover plate flows and is collected.At the lower end of the rafter, a gutter is located into which water from the rafter's water channel can flow. The water flows along the gutter to a vertical downpipe, which carries the water away from the roof structure and either discharges it into a downpipe or releases it into the environment. Both the gutter, which is often attached to one of the crossbeams, and the vertical downpipe significantly impair the aesthetics of the roof structure and require additional construction and installation effort.

[0005] Since the gutter is designed as a free-surface gutter that is open at the top, there is a risk that it will become dirty and blocked after prolonged use, so that further structural measures are necessary to either clean the gutter or prevent foreign objects from entering.

[0006] The invention is based on the object of creating a roof construction of the type mentioned, in which the water on the cover plates can be reliably drained away in a structurally simple manner.

[0007] This object is achieved according to the invention by a roof construction having the features of claim 1.

[0008] The roof structure according to the invention also provides a preferably flat and slightly inclined or horizontally oriented support frame, which is directly or indirectly supported on the ground by means of a supporting structure, for example, vertical supports and / or building components. The support frame is preferably rectangular and has at least two longitudinal beams arranged parallel to one another at a distance from one another and at least two transverse beams arranged parallel to one another at a distance from one another. The longitudinal beams and the transverse beams surround a so-called frame field located inside the support frame.

[0009] At least one rafter is provided which runs at a distance from the longitudinal beams, preferably parallel to them, and connects the cross beams to one another. Preferably, a plurality of rafters are arranged parallel to one another at a distance. The rafter or rafters divide the frame field into a plurality of roof fields. At least some of the roof fields and preferably all of the roof fields are each covered by a preferably flat cover plate, in particular made of glass, which runs inclined relative to a horizontal such that water which collects on the upper side of the cover plates, for example as a result of rain, runs off in the direction of the rafter assigned to the respective cover plate. A water channel which runs in the longitudinal direction of the rafter can be formed in or on the rafter. Preferably, the water channel is integrated into the rafter, i.e. arranged inside the rafter.The rafter runs either horizontally or at an incline to the horizontal so that the water flows along the rafter's water channel. A water outlet is provided in an axial end region of the rafter, at which water channel opens into a collecting channel. The collecting channel is formed, at least in sections, by a pipe or a hose, and in particular by a corrugated pipe or a corrugated hose. A hose is a closed channel that is easily deformable so that the hose can be easily adapted to the structural conditions. The hose can run over different height levels and can be easily guided around obstacles in the way. A pipe is also a closed channel and, compared to a hose, has greater flexural stability and is preferably designed to be inherently stable.

[0010] The tightness of the channel formed by the pipe or hose is easily ensured. Furthermore, a pipe or hose reliably prevents foreign matter or contaminants from entering from the outside.

[0011] The collecting channel can be formed by a single, continuous pipe or hose. Alternatively, it is possible to assemble the collecting channel from several pipe and / or hose sections, with adjacent pipe and / or hose sections each connected to each other via a preferably tubular connector and / or connected to the water outlet of the rafter's water channel.

[0012] The collecting channel can run horizontally or at an angle of inclination of 0.1° to 5° and preferably in the range of ± 1° to 3° to the horizontal.

[0013] In a preferred embodiment of the invention, it is provided that the collecting duct runs along one of the cross members and is arranged in particular within the cross member, so that on the one hand it is protected from external weather influences and on the other hand it does not affect the aesthetic appearance of the roof construction.

[0014] The tubular connector, which can be T-shaped or L-shaped, for example, has several connections, one of which is connected to the water outlet of the water channel. The other connection(s) of the connector are each connected to one of the hose sections that form the collecting channel.

[0015] If several or all rafters have an internal water channel, it is preferably provided that the water channels of several rafters and in particular all rafters open into the collecting channel.

[0016] A roof structure of the type mentioned is often attached to a building or located near a building. In a preferred embodiment of the invention, the collecting duct runs on or in the cross member facing away from the building.

[0017] The water supplied to the collecting channel must be drained away. For this purpose, the collecting channel can be connected to or discharged into a further first drainage channel via at least one preferably tubular first outlet piece. The first drainage channel can also be formed, at least in sections and preferably entirely, by a pipe or hose, in particular a corrugated pipe or hose.

[0018] In a preferred embodiment of the invention, it is provided that the first discharge channel runs horizontally or at an angle of 0.1° to 5° and preferably in the range of ± 1° to 3° inclined to the horizontal.

[0019] The first discharge channel can run parallel to the collecting channel. Furthermore, the first discharge channel can run within one of the cross members, particularly within the cross member in which the collecting channel is also located.

[0020] Water arranged on top of the cover plates flows into the water channels of the rafters in the manner mentioned and then flows in the water channels to the respective water outlet and through this into the collecting channel. The water in the collecting channel flows through the first outlet into the continuing first drainage channel and is drained away therein. It can be provided that the first drainage channel opens at its downstream end via a preferably tubular second outlet into a continuing second drainage channel. The second drainage channel can be formed at least in sections and preferably entirely by a pipe or a hose and in particular a corrugated pipe or corrugated hose.

[0021] Preferably, the second drainage channel runs vertically. This can be the case, in particular, if the supporting structure has at least one vertical support and the second drainage channel runs along or within this support. The water is drained through the second drainage channel and either released into the environment, collected in a cistern, or fed into a sewer system.

[0022] In a preferred embodiment of the invention, a collection tank and / or an overflow is provided in the region of the transition from the 1st drainage channel to the 2nd drainage channel, and in particular in the 2nd outlet piece arranged there. If the amount of water to be drained is below a predetermined limit, the water flows completely from the 1st drainage channel through the 2nd outlet piece into the 2nd drainage channel. If the amount of water to be drained is relatively large for a short time, it can be absorbed and temporarily stored in the collection tank and then flows out of the collection tank through the 2nd drainage channel over time. If the amount of water to be drained is too large over a longer period of time and / or the 2nd drainage channel is blocked or can no longer absorb any water, the water escapes at the overflow and flows downwards to the ground outside the 2nd drainage channel due to gravity.

[0023] According to the invention, an overflow channel is provided, which is arranged at the axial end of the rafter water channels opposite the water outlet. If the drainage of water from the water channel of one rafter or all rafters is no longer possible, for example because the collecting channel is overloaded or blocked and / or the first drainage channel is overloaded or blocked, the water collects in the rafter water channels. When a predetermined water level is reached within the rafter water channels, the additional water flows into the overflow channel at the end of the rafter water channel opposite the water outlet, preferably at a higher level, and is drained through it. The overflow channel preferably has the same structural design as the collecting channel, i.e.It is connected to the water channels of the rafters via preferably tubular connecting pieces, with pipe or hose sections running between the connecting pieces.

[0024] Preferably, the overflow channel runs in or along the other cross member and preferably merges into one of the longitudinal members at the end of the cross member. The overflow channel can either drain the water independently of the second drainage channel or flow into the second drainage channel. For this purpose, the overflow channel can be connected, for example, to the second outlet piece.

[0025] In a further development of the invention, it can be provided that a filter device is arranged in the flow path of the water from the upper side of the cover plate to the water channel of the associated rafter, through which the water flows. In this way, foreign bodies are prevented from entering the water channel of the rafter and clogging it. The filter device is preferably provided in the form of a strip-shaped bristle seal, for example, which is formed by an elongated arrangement of bristles and / or bristle bundles and can be attached to the rafter above the cover plate in such a way that the ends of the bristles and / or bristle bundles rest on the upper side of the cover plate from above. In a further development of the invention, it can be provided that the filter device additionally serves as a hold-down device that clamps the cover plate against the first bearing surface of the rafter.

[0026] Further details and features of the invention will become apparent from the following description of an embodiment with reference to the drawings.

[0027] They show: Fig. 1A schematic perspective view of a roof construction according to the invention, Fig. 2the section II-II in Fig. 1 , Fig. 3 an enlarged view of a longitudinal section through a rafter and the transition from the water channel of the rafter into the collecting channel, Fig. 4 the collecting channel, the 1st drainage channel and the 2nd drainage channel in a schematic representation and Fig. 5 the transition from the 1st drainage channel into the 2nd drainage channel in an enlarged view.

[0028] One in Fig. 1 The roof structure 10 shown has a preferably flat supporting frame 11, which has a rectangular configuration and comprises two longitudinal beams 12 arranged parallel to one another and at a distance from one another, and two transverse beams 13 arranged parallel to one another and at a distance from one another. The supporting frame 11 preferably runs in a supporting frame plane and can be aligned horizontally or arranged inclined relative to a horizontal. The supporting frame 11 is supported by means of a supporting structure 14, which in the illustrated embodiment comprises two vertical supports 17 arranged at two corner points of the supporting frame 11 and a building wall 30 arranged only schematically.

[0029] The longitudinal beams 12 and the cross beams 13 surround a frame section 11a located inside the supporting frame 11, which is divided into several roof sections 20 by means of several rafters 15. In the illustrated embodiment, four rafters 15 are present, which divide the frame section 11a into five, preferably approximately equally sized, rectangular roof sections 20. The roof sections 20 are each completely covered by a flat cover plate 16, which can be made of glass. Each cover plate 16 has a long longitudinal axis LL and a short longitudinal axis LK running perpendicular thereto, wherein the cover plates 16 are arranged inclined relative to a horizontal at least about the long longitudinal axis LL.

[0030] Adjacent cover plates 16 are each mounted with one end on one of the rafters 15, as is particularly the case in Fig. 2 is shown. The rafter 15 has a first support surface 26 in a side wall 15a, on which an edge region of one of the cover plates 16 is supported. Diagonally above the first support surface 26, a chamber-like recess 29 is formed in the rafter 15, on the bottom of which a second support surface 27 is formed. An adjacent further cover plate 16 is inserted with its edge region into the recess 29 and supported on the second support surface 27.

[0031] A water channel 18 is formed in the rafter 15, which is designed as an upwardly open, U-shaped groove and runs in the longitudinal direction of the rafter 15 and opens at its axial end into a water outlet 28, which Fig. 3 can be seen. The first support surface 26 is arranged in the upper region of the water channel 18 such that rainwater collecting on the upper side of the cover plate 16 resting on the first support surface 26 flows or drips into the water channel 18 from above due to the inclination of the cover plate 16, as shown by the arrow W 1. The water is then drained in the water channel 18 and discharged through the water outlet 28.

[0032] In the flow path from the top of the cover plate 16 to the water channel 18, a filter device 31 is provided through which the water flows before the water enters the water channel 18. This prevents foreign matter from entering the water channel 18 and clogging it. A strip-shaped bristle seal 32 is provided as the filter device 31. This strip-shaped bristle seal is formed by an elongated arrangement of bristles and / or bristle bundles and is attached to the rafter 15 above the cover plate 16 in such a way that the ends of the bristles and / or bristle bundles rest on the top of the cover plate 16 from above. The filter device 31 or the bristle seal 32 also serves as a hold-down device that clamps the cover plate 16 against the first support surface 26.

[0033] At the according Fig. 1 The water outlet 28 is arranged at the lower axial end of the water channel 18, facing away from the building wall 30, into which a T-shaped connecting piece 33 with a connection 35 is inserted (see Fig. 4 ). The connecting piece 33 has further connections 36 and 37, onto each of which a hose section 34 of a flexible corrugated hose or a pipe section is placed. The pipe or hose sections 34, together with the connecting pieces 33, form a collecting channel 21, which receives the water flowing out of the water channels 18. The collecting channel 21 runs essentially perpendicular to the rafters 15 and in particular within the Fig. 1 front or lower cross member 13 facing away from the building wall 30.

[0034] As from Fig. 3 As can be seen, at the axial end of the water channel 18 opposite the water outlet 28, there is provided a further water outlet 42 which is at a higher level than the water outlet 28. The further water outlet 42 opens via a further connecting piece 43 into an overflow channel 41 which can have the same structural design as the collecting channel 21, ie it can be connected to the individual water channels of the rafters via further tubular connecting pieces, with pipe or hose sections running between the further connecting pieces.

[0035] The collecting channel 21 is connected to a further first discharge channel 23 via a curved tubular first outlet piece 38. The first discharge channel 23 is formed by a pipe or a hose, in particular a corrugated hose, and runs parallel to the collecting channel 21 within the cross member 13.

[0036] At its downstream end opposite the first outlet 38, the first discharge channel 23 is connected to a second outlet 39, as shown in Fig. 4 and especially in Fig. 5 is shown. The second outlet piece 39 has an upwardly open collecting tank 44, which has an upper outlet 40 serving as an overflow and into which the first drainage channel 23 opens via a first upper connection 39a. A lower connection 39c is connected to a continuing second drainage channel 24, which extends essentially vertically and is formed by a pipe or a hose, in particular in the form of a corrugated hose. The second drainage channel 24 runs within the support 17 and is connected at its lower end either to a continuing line or a sewer system in a manner not shown, or opens into the surrounding area.

[0037] The overflow channel 41 runs in or on the cross member 13 facing the building wall. The overflow channel 41 can drain the water either independently of the vertical 2nd drainage channel 24 or alternatively in the vertical 2nd

[0038] drainage channel 24. In the Figur 5 In the embodiment shown, the overflow channel 41 runs through the longitudinal member 12 to the second mouth piece 39 and opens there into the collecting tank 44 via a second upper connection 39b.

[0039] The water collecting on the cover plates 16 of the roof structure 10 flows in the aforementioned manner into the water channels 18 of the rafters 15 and flows therein to the respective water outlet 28 and through the connecting pieces arranged therein into the collecting channel 21. From the collecting channel 21, the water flows via the 1st outlet piece 38 into the 1st drainage channel 23 to the 2nd outlet piece 39 and from there into the 2nd drainage channel 24.

[0040] If the 2nd drainage channel cannot absorb the accumulating water quantity or is blocked, the water is first collected in the collection tank 44. If this is completely full, excess water exits at the outlet 40, as indicated by the arrow W 2 in Fig. 4 is indicated.

[0041] If the collecting channel 21 and / or the 1st drainage channel 23 should be blocked, the water cannot drain sufficiently from the water channels 18 of the rafters 15, so that the water level in the water channels 18 of the rafters 15 rises until the water has reached a predetermined height so that it can drain through the further water outlet 42 of the rafters 18 and the overflow channel 41 and flow to the 2nd mouth piece 39, where it flows through the collecting tank 44 and is discharged through the 2nd drainage channel 24.

Claims

1. Roof construction (10), comprising a supporting frame (11) which is supported by means of a supporting construction (14) of the roof construction (10) and has at least two longitudinal beams (12) arranged parallel to one another and at a mutual distance from one another and at least two transverse beams (13) arranged parallel to one another and at a mutual distance from one another and which surrounds a frame field (11a), and comprising at least one rafter (15) which connects the transverse beams (13) to one another, runs at a distance from the longitudinal beams (12) and divides the frame field (11a) into a plurality of roof fields (20), at least one of the roof fields (20) being covered by a cover plate (16) and a water channel (18) being formed in or on the rafter (15), which channel runs in the longitudinal direction of the rafter (15) and opens into a collecting channel (21) via a water outlet (28) in its axial end region, the collecting channel (21) being formed at least in portions by a pipe or a hose, characterized in that an overflow channel (41) is provided, which is arranged at the axial end of the water channel (18) of the rafter (15) opposite the water outlet (28), the overflow channel (41) being designed such that the water flows from the water channel (18) of the rafter (15) into the overflow channel (41) and is drained through the overflow channel when a predetermined water level is reached within the water channel (18) of the rafter (15).

2. Roof construction according to claim 1, characterized in that the overflow channel (41) is connected to the water channels (18) of the rafters (15) via tubular connecting pieces (43).

3. Roof construction according to claim 2, characterized in that pipe or hose portions run between the connecting pieces (43).

4. Roof construction according to any of claims 1 to 3, characterized in that the overflow channel (41) runs in or on the transverse beam (13).

5. Roof construction according to claim 4, characterized in that the overflow channel (41), at the end of the transverse beam (13), merges into one of the longitudinal beams (12).

6. Roof construction according to any of claims 1 to 5, characterized in that the collecting channel (21) runs horizontally or at an angle of inclination of 0.1° to 5° or inclined by ± 1° to 3° relative to the horizontal.

7. Roof construction according to any of claims 1 to 6, characterized in that the collecting channel (21) runs within one of the transverse beams (13).

8. Roof construction according to any of claims 1 to 7, characterized in that a connecting piece (33) has a plurality of connections (35, 36, 37) and is connected by one of the connections (35) to the water outlet (28) of the water channel (18) and by at least one further connection (36, 37) to a hose portion (34) of the collecting channel (21).

9. Roof construction according to any of claims 1 to 8, characterized in that the collecting channel (21) opens into a continuative first drainage channel (23) via a first opening piece (38).

10. Roof construction according to claim 9, characterized in that the first drainage channel (23) is formed at least in portions by a pipe or a hose.

11. Roof construction according to claim 9 or 10, characterized in that the first drainage channel (23) runs horizontally or at an angle of inclination of 0.1° to 5° or inclined by ± 1° to 3° relative to the horizontal.

12. Roof construction according to any of claims 9 to 11, characterized in that the first drainage channel (23) runs within one of the transverse beams (13).

13. Roof construction according to any of claims 9 to 12, characterized in that the first drainage channel (23) opens into a continuative second drainage channel (24) at its downstream end via a second opening piece (39).

14. Roof construction according to claim 13, characterized in that the overflow channel (41) opens into the second drainage channel (24).

15. Roof construction according to claim 13 or 14, characterized in that the overflow channel (41) is connected to the second opening piece (29).

16. Roof construction according to any of claims 13 to 15, characterized in that the second drainage channel (24) is formed at least in portions by a pipe or a hose.

17. Roof construction according to any of claims 13 to 16, characterized in that the supporting construction (14) has at least one vertical support (17) and in that the second drainage channel (24) runs on or within the support (17).

18. Roof construction according to any of claims 1 to 17, characterized in that in the flow path of the water from the top of the cover plate (16) to the water channel (18), a filter device (31) is arranged through which the water flows.

19. Roof construction according to claim 18, characterized in that the filter device (31) has a bristle seal (32).

20. Roof construction according to claim 18 or 19, characterized in that the filter device (31) is used as a hold-down device which clamps the cover plate (16) against the rafter (15).