DE8716954U1 - Upstand for a skylight dome - Google Patents

Description

SCHWABE - SANDMAIR*.'"MARX .:'..":' 'paj£.n.ta^vJäIt£ :

STUNTZSTRASSE 16 8CXX) MUNICH 80

Attorney file 35 794 X

Ulrich Kreft

Varnkamp 15

4970' Bad Oeynhausen

Upstand for a skylight dome

The innovation relates to a mounting ring for a skylight dome of the type specified in the preamble of claim 1.

Conventional upstands are made from extruded hollow chamber profiles made of thermoplastic high-polymer materials, especially PVC, extruded light metal profiles, especially aluminum profiles or thermosetting high-polymer materials. However, the manufacturing process for the profiles forming the side walls leads to severe restrictions in terms of the "geometry" of the side wall, i.e. in terms of the shape and dimensions of the side wall, since a corresponding tool is required to produce each hollow chamber profile, which in turn can only be used to extrude profiles with a certain "geometry".

However, there are many applications where different side walls are required in terms of shape and dimensions, which requires the manufacture of a separate tool each time when constructing such a base ring from extruded carbon steel profiles.

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The innovation is therefore based on the task of creating a base for a power dome of the specified type in which the disadvantages mentioned above do not occur. In particular, a base is to be proposed in which the internal geometry of the base can be varied in a manufacturing-technically simple and therefore cost-effective manner and can thus be adapted to different requirements.

This is achieved according to the innovation by the features set out in the characterizing part of claim 1.

Useful embodiments are defined by the features of the subclaims.

The advantages achieved with the innovation are based on the production of such a base ring from an inner part made of folded steel or aluminum sheet and an outer part made of extruded aluminum or PVC profiles, which can be connected to one another at the upper edge. By appropriately designing the connection area between these two parts, the thickness of the base ring can be varied and thus adapted to the spatial conditions without the inner part and/or outer part having to be modified. For this purpose, only the two overlapping angled upper edges of the inner part and outer part have to be arranged accordingly.

Another variation option that is easy to implement in terms of production technology is to design the bend of the angled upper edge of the metal sheet accordingly. This allows a large range of variation for the width of the base ring without having to change the extruded profiles. Even for different widths, only a modification of the deformation of the metal sheet is necessary, but no change to the extruded profile and therefore no change to the tool required for this.

Before the two parts are connected, the interior can be filled if necessary, for example with a woven material; in addition

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1 it is possible to arrange a folded sheet in this interior space and to connect it to the inner edges of the two parts, as may be useful for larger lengths ⁴ for additional stiffening and fitting.

; In principle, it is possible to change the length of the extruded, the outside

&Ggr; forming profile to the length of the folded metal sheet;

j ciies, however, requires that if the height of the upstand is changed

&Ggr; also the height of the extruded profile and thus the corresponding tool

j stuff needs to be changed.

j According to a preferred embodiment, the extruded profile made of aluminium or PVC forming the outside has a significantly lower

If re height than the folded metal sheet, so that when the height changes

h, of the upstand only the bending of the metal sheet is appropriately

Ii must be designed, which can be easily realized, while a

It is not necessary to change the height of the extruded outer part.

j The resulting free space between the base of the upstand and

I the lower edge of the extruded profile is usually formed by the

I roofing membrane is covered so that the required sealing is ensured

1 ^is ·

I In this context, the following is also noted: When laying out

l| a flat roof with roofing membranes, for example bitumen or plastic

;| Sheets, the upper edges of the roofing sheets must be mechanically fixed to the upper area

i; of the upstand; the seals must be 15 cm above the

I hater leading layer raised and additionally against water hindrance

&eacgr; frequency can be ensured.

For this purpose, roof connection strips have been developed which are designed as an aluminum profile with a slightly bendable profile leg attached to the upstand at the factory using a special GRP laminate. The roof connection strip is clamped between the fixed and the bendable leg of the aluminum profile and securely fixed using a screw connection; the manufacturing process required for this is, however,

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but very complex, since the aluminum uni-fold clamping profile has to be laminated into the GRP using the wet process.

DE-GM 7 222 322 describes a mounting ring for a skylight, to which a clamping device for the roof sealing foil is attached. A clamping strip is designed as an approximately triangular hollow profile that is closed at the top and in which a wide slot pointing downwards is provided. A clamping bracket is guided through the slot into the profile; screw-in mounting posts are placed on the edge of the profile that borders the slot, with the inner end of the clamping bracket supported on the arms of the mounting posts and the end of the clamping bracket resting on it being acted upon by the clamping screws.

Here, too, a relatively complex manufacturing process is required; additionally, there are additional problems with the corner formation, since the corners are open and therefore additional sealing measures must be provided.

Finally, DE-OS 32 27 385 describes a curb for a skylight, on the top of which a frame made up of angle profiles is placed and firmly connected to the curb. The angle profiles each have a leg that runs roughly parallel to the top of the curb. Another leg of the angle profile protrudes downwards and is spaced from the respective side wall of the curb, so that the roof beam can be inserted and secured in the gap between this leg and the curb. The roofing membranes laid in this gap are permanently protected against all weather influences in their connection area to the curb by the protruding legs, even when the skylight is open.

However, this also requires an additional component, which is very complex to manufacture and assemble. In addition, problems arise under thermal stress, as the upstand on the one hand and the additional frame on the other expand or contract differently when heated or cooled. Finally , a very complex mechanical fastening of these additional parts must be provided.

All of these problems can be avoided with the new design of the upstand by providing the extruded profile forming the outside with a one-piece holder for fastening the upper edge of the roofing membrane. A clamping profile is positively hung in this holder in the upper edge area of the roofing membrane, which is then connected to the actual upstand by means of a mechanical connecting element, generally a screw, which results in a tight fit of the upper edge of the roofing membrane on the outside of the upstand.

The mechanical connection between the roof sheet and the upstand, as well as the always critical covering of the gap between the roof sheet and the upstand, is carried out using simple means and with minimal use of materials; it is also important that the clamping profiles can be snapped into the holder at the factory and only need to be tightened on site. The form-fitting connection is designed in such a way that the clamping profile cannot come loose during transport of the upstand.

By designing the corners accordingly, problem-free sealing can also be ensured there.

The innovation is explained in more detail below using exemplary embodiments with reference to the attached schematic drawings:

Fig. 1 shows a section through a first embodiment of a side wall of a box-shaped frame of a curb,

fig, 2 a section corresponding to figure 1 with a modification of the embodiment according to Fig. 1,

Fig. 3 is a section corresponding to Figures 1 and 2 with a further modification of this embodiment,

Fig. 4 shows a section corresponding to Figures 1 to 3 with cifrc" ΙΙβίδεδεία r δακία x GFr,

Fig. 5 is a section through a side wall corresponding to Figures 1 to 4 with a further modification, and

Fig. 6 shows a section corresponding to Figures 1 to 5 through a side wall with a further modification.

The side wall of the box-shaped frame of a curb shown in Fig. 1 and generally indicated by the reference numeral 10 consists of a folded metal sheet 12 forming the inside and a post-supported profile 14 made of aluminum or PVC forming the outside.

The folded metal sheet is made of steel or aluminum and has a horizontal base area 12a that can be placed on the roof, a lower area 12b that runs diagonally upwards and adjoins the base area, and an upper area 12c, the upper edge of which is hook-shaped.

^fe (at 13) is angled so that an approximately horizontal connecting surface

marriage results.

The extruded profile 14 is also provided at its upper end with a

ä hook-shaped angled end surface, which is connected to the corresponding

front face of the metal sheet 12. Between the two contact surfaces, an oxidic and/or thermal separating layer 16 made of a suitable insulating material is arranged, such as a high polymer material, e.g. butyl rubber.

The connection between the beveled end faces of the metal sheet 12 and the profile 14 can be made mechanically, i.e. by screws, rivets or similar, by welding or gluing.

A schematically indicated thermal insulation material 18 is arranged in the cavity formed by the metal sheet 12 on the one hand and the profile 14 on the other. ^s

It can be seen that the width of this cavity can ^be varied on the one hand by appropriately designing the width of the two beveled end faces and/or by appropriately displacing the profile 14 with respect to the metal sheet 12.

The profile 14 has a shape that corresponds to the course of the metal sheet 12, i.e. it is angled approximately at the middle of the height of the upstand 10, but ends at point 20, i.e. well above the foot area 12ä of the metal sheet 12. As will be explained later, the resulting gap is covered by the roofing membrane 22.

If the height of the upstand 10 is changed, only the metal sheet 12 must be brought to the desired length, for example by cutting it to length or, if necessary, by bending it, while an adjustment of the profile 14 is generally not necessary.

On the outside, the profile 14 is formed with a circumferential, integrated holder 24 which has been extruded together with the profile 14. This holder 24 has a stud 24a which projects diagonally downwards from the outer wall of the profile 14, a web 24b which projects vertically downwards, a web 24c which projects at a right angle from the web 24b to the profile 14 and finally a vertically upwardly directed projection 24d, so that a profile which is approximately hook-shaped in cross section is obtained; the slope of the web 24a facilitates the drainage of the water on the outer edge of the side wall and thus the frame of the upstand.

A clamping profile 26 which can be positively hooked into the hook-shaped end region of the holder 24 has a shape adapted to the shape of the outer surface of the profile 14, ie the clamping profile 26 is provided with a slight bend corresponding to the Pnofil 14 and runs at its upper end into a hook-shaped end region 28, the projection 30 of which engages behind the projection 24d of the holder 24, as can be seen in Fig. 1.

In the manufacture of such a net ring, the metal sheet 12 is cut to the desired length and then folded so that the shape shown in Fig. 1 is obtained. The profile 14 is then placed on the folded metal sheet 12 in the manner explained and connected to it; now the upper end of the clamping profile 26 is hooked into the hook-shaped end area of the receptacle 24; the distance between a projection £4% of the

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The connection between the holder 24 and the opposite outer surface of the profile 14 is matched to the length of the end region 30 in such a way that the hook-shaped end region 28, 30 of the clamping profile 26 can only be inserted into the hook-shaped end region of the holder when the long leg of the clamping profile 26 is in the horizontal position. To form-fit the connection between these two hook-shaped end regions, the long leg of the clamping profile 26 can then be swiveled clockwise into the position shown in Fig. 1, so that this connection does not come loose during normal handling of such a base or its side walls. This simplifies transport in particular, since the clamping profile 26 is now already temporarily connected to the side walls and can only be attached to the side walls 10 using screws 32 during final assembly.

Sealing at the corners of such a base rim 10 always represents a problem; to reduce this problem, the clamping profiles 2:6 at the corners of the base rim 10 are formed with an overhang (not shown) that protrudes slightly beyond the side wall of the base rim 10 and is bent there at an angle of 90°; at the same time, the areas 28, 30 of the hook-shaped end area of the clamping profile 26 are cut off at the corners so that only the long leg of the clamping profile 26 forms the aforementioned overhang.

The two projections of the adjacent side walls of the upstand 10 have such a length that their bent edges touch each other and achieve a certain sealing effect.

During production, but possibly also during assembly on site, the heat-insulating material 18 is filled into the interior via the gap between the lower end 20 of the profile IO and the foot area 12ö of the metal sheet 12.

When installing such a curb, the base area 12a of the metal sheet 12 is fastened to the roof in the usual way, namely mechanically.

Then a first, lower roof sheet 34 is glued to the flat foot area 12a or also mechanically!* attached to it: this roof sheet 34

extends to the beginning of the thermal insulation material 22. The surface of this roofing sheet 34 is provided with an adhesive layer 36 in order to connect the roofing sheet 34 to the foot area of a second upper roofing sheet 38 which extends from the beginning of the foot area 12a over the entire top of the foot area 12a and then along the outer surface of the side wall 10 to approximately below the receptacle 24, as can be seen in Fig. 1,

The upper end of the roof sheet 28 is located between the clamping profile 26 and the profile 14 of the side wall 10, so that the upper edge of the roof sheet 38 is located between these two surfaces and at the same time the free gap between the roof sheet 38 and the outer wall of the profile 14 is sealed at the top by the clamping profile 26.

Now the clamping profile 26 is mechanically connected to the profile 14 via a screw 32 or a rivet and is thus firmly clamped.

If the side walls 10 of the upstand are longer, it may be necessary to arrange a bent support profile 40 between the profile 12 and the profile 14; this bent support profile 40 is indicated in Fig. 1 with dashed lines. The approximately horizontal leg of the bent support profile 40 is located approximately at the level of the bend of the side wall 10; the left leg rests on the inner surface of the metal sheet 12, while the right leg rests on the inner surface of the extruded profile 14. The mechanical fastening of the bent support profile 40 is carried out via the screws 32 or rivets on the extruded profile 14, so that no additional fastening to the metal sheet 12 is required. If necessary, however, an additional fastening can still be provided. The support profile 40 can be made of aluminium or sheet steel, or possibly also of plastic.

Fig. 2 shows a modification which differs from the embodiment according to Fig. 1 essentially in the design of ^the foot region ¹¹ .

Here, the foot area 12ö of the metal profile 12 has only a relatively short length. A thermal insulation 42 is arranged on this foot area 12a and on the adjoining area of the roof, onto which the roofing membrane 38 is placed directly. The roofing membrane 38 initially runs horizontally over the thermal insulation.

insulation 42 and then upwards over an inclined area 39 until it comes into contact with the thermal insulation layer 18 in the side wall 10 and then extends upwards under the holder 24. The cavity between the inclined area 39, the thermal insulation layer 42 and the thermal insulation layer 18 is also filled with thermal insulation material.

Fig. 3 shows a further modification of the foot area of the side wall 10 of a curb. A trapezoidal sheet 44 is provided here, to which the foot area 12a of the metal sheet 12 is fastened by screws 4§. The thermal insulation material 42 again rests on the trapezoidal sheet.

Deviating from the embodiment according to Fig. 2, a lower roof sheet 34 now extends over the thermal insulation layer 42 and abuts against the thermal insulation material 18 in the side wall! 10. The end piece of the second, upper roof sheet, which is connected to the lower roof sheet 34 via the adhesive layer 36, initially runs horizontally and then again upwards over the slope 39 until it comes into contact with the thermal insulation material 18.

Fig. 4 shows a further modification in which the trapezoidal sheet 44 is attached to the base area 12a of the metal sheet 12 by means of screws 46. A bent stiffening sheet 48 is attached to the upper, horizontal webs of the trapezoidal sheet 44 by means of screws 50. This stiffening sheet 48 has an angled edge 52 which is connected to the lower area 12b of the metal sheet 12 by means of screws 54. This stiffening sheet 48 replaces the wooden planks previously used for stiffening.

Both the horizontal thermal insulation material 42 and the thermal insulation material 18 in the inner wall 10 of the support frame rest on this horizontal stiffening plate 48. The thermal insulation material 42 is again covered at the top by the roof sheet 38, which extends over its sloping area 39 to below the clamping profile 26.

By utilizing the relatively high strength and stability of the metal sheet 12 in conjunction with the stiffening sheet 48, side walls with a relatively strong slope can also be realized, which also

$ T ' JI V &Lgr;

&igr; it

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f «extremely large inlet cross-sections and thus favorable aerodynamic «* conditions become possible.

] Fig. 5 shows a modification of the embodiment according to Fig. 4, in which

'. the angled edge 52 of the horizontal metal sheet 48 does not

i above, but extends vertically downwards and is connected via the screw 54 with

I is connected to a vertical, lower part 12d of the metal sheet 12. The

f. vertical part 12d is then bent again at a right angle, whereby

j·' the actual foot area 12a is created.

^] Between the foot area 12a on the one hand and the metal sheet 48 on the other hand

i the trapezoidal sheet 44 is again attached - above the metal sheet 48

!' the thermal insulation material 42 and the roofing membrane 38, which are

I inclined area 39 comes into contact with the thermal insulation material 18.

| Fig. 6 finally shows a modification of the embodiment according to Fig. 3,

I in which a further bent profile 58 is attached to the

I metal sheet 12 is attached. Between the foot area 12a of the metal sheet

I ches 12 and this further profile 58 is the thermal insulation material 42

I arranged.

&igr; The bend of the profile 58 can extend either upwards or downwards, as shown.

I On the horizontal area of the profile 58 there is an adhesion promoter layer 60, onto which the lower roofing membrane 34 is applied. This lower roofing membrane 34 extends from the profile 58 to over the thermal insulation layer 42, i.e. beyond the profile 58.

An adhesive layer 36 is again applied to the lower roofing membrane 34, on which the upper roofing membrane 38 is located, extending over the sloping area 39 in contact with the thermal insulation material 18.

If the roofing membrane 34 is mechanically fastened to the profile 58, the i adhesion promoter layer 60 can be dispensed with.

The profile 58 used to hold the roofing membrane can be made of a metal sheet, in particular of aluminum or steel or of a plastic.

By taking advantage of the relatively high strength and stability of the Ketall sheet 12, side walls with a relatively strong slope can also be realized in this embodiment, which makes new inlet cross-sections and thus favorable aerodynamic conditions possible.

Claims (14)

SCHWEBE - SäNDMAIflV*'i\2ARX SIUNiZSTRASSE 16 SGOO MUNICH Attorney's file 35 794 X Ulrich Kreft Varnkamp 15 4970 Bad-üeynhausen Upstand for a skylight dome Protection claims 1. Upstand for a skylight dome a) with side walls joined together to form a box-shaped frame, characterized in that b) each side wall (10) has on the inside a folded metal sheet (12) with an angled upper edge (13), c) which is connected to a complementary upper edge of a profile (14) forming the outer side. 2. Upstand according to claim 1, characterized in that the metal sheet (12) consists of aluminum or steel. 3. Upstand according to one of claims 1 or 2, characterized in that the profile (14) forming the outside consists of extruded aluminum or PVC. 4. Upstand according to one of claims 1 to 3, characterized in that that the space between the metal sheet (12) and the profile (14) is filled with a thermal insulation material (18). X/ma/br »(089)988272-74 Telecopier;J089) ₄ 98 _# 3049 _{## >r <ir} ,3ankhonten: Baye^.Vereinsbank Munich 453100 (bank code 70020270) Telex: 524560 Swan d KaIIe lnfote$ 6550 Gn Il+JlI J ₁ , · · ; _Jr Hypo;Bank München 4410122850(BLZ70020011)Swif( Code: HYPODli MM J ; ;" · ; ; '"· ""Bealyhe Bank Munich 3743440 (bank code 7007001G> '-'Postgtro Munich 65343-808 (bank code 70010080) 5. Upstand according to one of claims 1 to 4, characterized in that an oxidic and/or thermal separating layer (16) is arranged between the two angled upper edges. 6. Upstand according to one of claims 1 to 5, characterized in that the height of the profile (14) is much smaller than the height of the metal sheet (12), and that the gap created thereby is covered by a roofing membrane (22). 7. Upstand according to one of claims 1 to 6, characterized in that the metal sheet (12) has an angled, horizontal foot region (12) serving as a fastening. 8. Upstand according to claim 7, characterized in that the foot area (12a) is connected to the roof. 9. Upstand according to claim 7, characterized in that the foot region (12a) is connected to a trapezoidal sheet (44). 10. Upstand according to one of claims 7 to 9, characterized in that the foot region (12) serves to hold an additional, horizontal thermal insulation layer (42). 11. Upstand according to one of claims 1 to 10, characterized in that a further, bent stiffening plate (48, 52) and/or a receiving plate (58) for a sealing sheet is fastened to the lower part of the metal sheet (12). 12. Upstand according to one of claims 1 to 11, characterized in that the profile (14) is provided on its outside in one piece with a receptacle (24), and that a clamping profile (26) for the upper edge region of a roofing membrane (22) is held in the receptacle (24) in a form-fitting and/or force-fitting manner. 13. Upstand according to claim 12, characterized in that -cfiV receptacle (24> has a hook-shaped connection area (24a, 24b, 24c, 24d) in # · · ■ · m:wm into which the upper, hook-shaped end (28, 30) of the clamping profile (26) is hooked. 14. Upstand according to one of claims 12 or 13, characterized in that the clamping profile 1 (26) is attached to the profile (14) by screws (32) or rivets.