Fastening device

Abstract

Fastening device for fastening a solar and / or photovoltaic module to a flat roof, comprising a holding shoe (10) with a base plate (12) and two opposite, parallel-oriented side walls (14) extending at right angles to the base plate (12), and a frame foot (24) which can be fastened in the holding shoe (10) and has at least one stop (26) and two fixing devices (28) arranged on opposite sides, wherein the holding shoe (10) has at least one counter-stop (18), preferably designed as a tab, for the stop (26), and the side walls (14) of the holding shoe (10) each have at least one fixing element (20) for the fixing devices (28).

Description

The invention relates to a fastening device for fastening a solar and / or photovoltaic module to a flat roof.Frames for fastening a solar and / or photovoltaic module to a flat roof are known. The frame elements are screwed to one another.As a result, the assembly is complex and thus time- and cost-intensive.It is therefore an object of the invention to provide a fastening device which simplifies the fastening of a solar and / or photovoltaic module to a flat roof.This object is achieved by the subject matter of claim 1.According to the invention, the fastening device is designed for fastening a solar and / or photovoltaic module to a flat roof and / or can be used for this purpose.Flat roofs are, for example, roofs up to an inclination of 5°.The fastening device has a retaining shoe with a base plate and two opposing side walls oriented parallel to one another and extending at right angles to the base plate.On the underside of the holding shoe, a plastic overlay, for example made of EPDM or HDPE, can optionally be provided. Damage to the roof is thus avoided. The fastening device is therefore particularly suitable for soft roofs, but is likewise suitable for hard roofs.The retaining shoe preferably lies only on the false roof and is not screwed to the latter. The attachment is effected by the dead weight of the solar and / or photovoltaic module and / or an optional ballasting, for example by stones and / or sand bags.The fastening device has a frame foot which can be fastened in the retaining shoe or is fastened in the mounted state.The mounting of the frame foot in the holding shoe is preferably effected without tools.The frame foot has at least one stop and two fixing devices arranged on mutually opposite sides.The holding shoe has at least one counterstop for the stop.The counterstop is preferably designed as a tab. The tab can be bent, folded, cut, drilled, cut, irradiated, milled and / or lasered, for example, from the side wall.The counterstop makes it possible to easily define the position of the frame foot. Thus, during assembly, the frame foot is, for example, inserted into the retaining shoe until the stop of the frame foot strikes against the counterstop of the retaining shoe.The counterstop can also serve as counterstop and / or hold-down device. Thus, the frame foot can be threaded into the counterstop, for example, at the stop.The side walls of the holding shoe each have at least one fixing element for the fixing devices.The frame foot can be pressed downward for fixing. The counter and / or hold-down device facilitates the assembly in this case.In the fixed state, the frame foot can preferably be fastened to the holding shoe in a form-fitting manner.The assembly is very simple, as a result of which time and thus costs can be saved. Solar and / or photovoltaic modules can be fastened to a flat roof quickly and easily by the fastening device.Preferably, the fastening device can comprise or consist of a metal material, e.g. aluminum and / or (stainless) steel.Preferably, the fastening device is formed in one piece-apart from the optional plastic support.The metal material can be plate-shaped from the home and / or have a uniform thickness. The contour, e.g. the counterstop and / or the fixing elements, can then be formed in, for example bent, beveled, machined, drilled, cut, irradiated, milled and / or lasered in.For example, the fastening device can have or consist of an angled sheet metal part. Preferably, the side walls can be folded and / or bent.The invention also relates to a system having a fastening device and at least one solar and / or photovoltaic module fastened thereto via the frame foot.Both the unmounted and the mounted state are protected.Further developments of the invention can be found in the dependent claims, the description and the accompanying drawings.According to one embodiment, two stops and / or two counterstops are provided, which are arranged on mutually opposite sides.For example, the side walls of the holding shoe can each have at least one counterstop for the stops.Counterstops or stops on both sides facilitate assembly, since-in contrast to a single counterstop arranged laterally-an undesired rotation is prevented. Also, the forces are distributed uniformly.According to a further embodiment, the fixing devices are designed as latching openings and the fixing elements as latching lugs, preferably latching lugs.The latching lugs can be bent, beveled, machined, drilled, cut, irradiated, milled and / or lasered, for example, from the side walls.Alternatively, the fixing devices can be designed as latching noses and the fixing elements as latching openings.The frame foot can latch on the holding shoe. For example, the frame foot can be clicked firmly.The assembly can be effected without tools and / or by hand.According to a further embodiment, the base plate has at least one holding element which extends in the same direction as the side walls, that is to say upwards (for example in the direction of the frame foot) and is arranged between the side walls.The holding element serves to absorb tensile forces arising in the longitudinal direction.According to a further embodiment, the frame foot has at least one holding device for the holding element.If the frame foot is fastened to the holding shoe via the fixing devices and fixing elements, the holding device and the holding element preferably engage in one another.Occurring longitudinal forces can thus be introduced and / or compensated.Alternatively or additionally, the frame foot can be screwed to the retaining shoe.According to a further embodiment, the holding device is designed as a holding opening, e.g. a holding slot, and the holding element is designed as a holding lug, preferably a holding tab.The retaining lug can be bent, beveled, machined, drilled, cut, irradiated, milled and / or lasered in from the base plate, for example.Alternatively, the holding device can be designed as a holding lug and the holding element as a holding opening.Preferably, the retaining lug engages in the retaining opening. In this case, latching is not provided, but is possible in principle.According to a further embodiment, a plurality of holding devices and a plurality of holding elements are provided.Preferably, at least or exactly two, three, four, five, six or more holding devices and / or holding elements are provided.The holding devices and / or holding elements can be arranged, for example, next to one another and / or in the form of a grid.Because a plurality of holding devices and / or holding elements are provided, the frame base does not slit open even in the event of large forces occurring.According to a further embodiment, the holding shoe is designed for fastening two frame feet.Alternatively, a variant is conceivable in which the retaining shoe can only hold a frame foot, for example at an edge region of the flat roof.Preferably, however, the holding shoe accommodates exactly two frame feet. Components can thus be saved.The holding shoe is preferably designed to be axially symmetrical.The counterstop can preferably be arranged in a central region, e.g. centrally. Thus, the counterstop can be used for both frame feet.According to a further embodiment, a frame rail, which can also be referred to as a bottom rail, is provided, which is connected to the frame foot.The frame rail is in this case a component of the fastening device.The frame foot and the frame rail can preferably be formed integrally or can be screwed together, for example.According to a further embodiment, a frame stand is provided which is pivotably connected to the frame rail.The frame stand is in this case a component of the fastening device.The frame stand can serve to set the solar and / or photovoltaic module obliquely.All aspects, embodiments and features of the invention described here can be combined with one another, preferably also separately from the specific configuration in the context of which they are mentioned. Preferably, all the subjects of the dependent claims can be combined with one another and with the subject of the independent claim.It is generally noted that terms such as "a" or "an" do not necessarily mean "exactly one" or "exactly one", this being likewise possible. The terms "a" and "an" can therefore be understood as "at least or exactly one" or "at least or exactly one". The use of the singular preferably includes the presence of the plural components and vice versa.It is noted that "preferably" and "preferably" may be translated as "preferably" to English. A feature introduced by "preferably" or "preferably" is purely optional, may be omitted and does not represent a limitation, for example of the claims.The invention is described below by way of example with reference to the drawings. The following are shown: FIG. 1 is a perspective view of an embodiment of a retaining shoe of a fastening device according to the invention, FIG. 2 shows a perspective view of an embodiment of a frame foot of a fastening device according to the invention, FIG. 3 is a perspective view of an embodiment of a fastening device according to the invention, FIG. 4 is a side view of the fastening device according to FIG. 3 ; and FIG. 5 shows a perspective view of an embodiment of a fastening device according to the invention, including the frame rail and frame stand.First, it should be noted that the illustrated embodiments are merely exemplary in nature. Thus, individual features can be realized not only in the combination shown, but also alone or in other technically meaningful combinations. For example, the features of one embodiment can be combined with features of another embodiment as desired. The number, shape and / or position of the stops, counterstops, fixing devices, fixing elements, holding devices and / or holding elements is fundamentally arbitrary. Furthermore, the plastic overlay shown is purely optional.If a figure contains a reference sign which is not explained in the directly associated text of the description, reference is made to the corresponding preceding or following explanations in the description of the figures. Thus, the same reference numerals are used for identical or comparable components in the figures and these are not explained again.FIG. 1 shows a holding shoe 10 of a fastening device for fastening a solar and / or photovoltaic module to a flat roof.The holding shoe 10 has a base plate 12 and two opposite side walls 14 which are oriented parallel to one another and extend at right angles to the base plate 12.The side walls 14 may have straight edges or may be curved as shown.On the underside of the holding shoe 10 a plastic support 16 is provided. This can be screwed, riveted and / or glued to the base plate 12, for example.The holding shoe 10 has in a central region, for example centrally, two counterstops which are designed as lugs 18 and are arranged on the opposite side walls 14.Furthermore, the side walls 14 of the holding shoe 10 each have two fixing elements designed as latching tabs 20.The base plate 12 of the holding shoe 10 has four holding elements which extend in the same direction as the side walls 14 and are arranged between the side walls 14 and are designed as holding lugs 22.The four holding tabs 22 are preferably arranged in a grid-like manner (wherein in FIG. 1 one holding tab 22 is concealed by the side wall 14).FIG. 2 shows a frame foot 24 which can be fastened in the holding shoe 10 and has two stops 26 arranged on opposite sides.Furthermore, the frame foot 24 has two fixing devices arranged on mutually opposite sides and formed as latching openings 28 (wherein a latching opening 28 is concealed in FIG. 2 ).On the underside, the frame foot 24 has two holding devices (concealed in FIG. 2 ) designed as holding openings.As can be seen in FIGS. 3 and 4, the frame foot 24 can be inserted into the retaining shoe 10 until the stops 26 strike the counterstops 18.The counterstops 18 serve simultaneously as counter- and / or hold-down devices when the frame foot 24 is pressed downward. In this case, the latching lugs 20 latch on the latching openings 28.Further, the retaining tabs 22 engage the retaining apertures. This allows tensile forces occurring in the longitudinal direction to be absorbed.On the opposite side, a further frame foot 24 can optionally be fastened to the holding shoe 10.FIG. 5 shows a fastening device including frame rail 30 and frame stand 32.The frame foot 24 may be integrally formed with the frame rail 30.For fastening a solar and / or photovoltaic module, the frame stand 32 can be opened. The inclination of a frame stand support 34 can correspond to the inclination of an upper side of the frame foot 24. Thus, the solar and / or photovoltaic module can be fastened, e.g. screwed and / or clamped, to these components.List of reference characters10 Holding shoe 12 Base plate 14 Side wall 16 Plastic support 18 Tab, counterstop 20 Latching tab, fixing element 22 Holding tab, holding element 24 Frame foot 26 Stop 28 Latching opening, fixing device 30 Frame rail 32 Frame stand 34 Frame stand support

Claims

Fastening device for fastening a solar and / or photovoltaic module to a flat roof, having a holding shoe (10) with a base plate (12) and two opposite side walls (14) oriented parallel to one another and extending at right angles to the base plate (12), and a frame foot (24) which can be fastened in the holding shoe (10) and has at least one stop (26) and two fixing devices (28) arranged on opposite sides, wherein the holding shoe (10) has at least one counterstop (18), preferably designed as a tab, for the stop (26), and the side walls (14) of the holding shoe (10) each have at least one fixing element (20) for the fixing devices (28).Fastening device according to claim 1, characterised in that two stops (26) and / or two counter stops (18) are provided, which are arranged on mutually opposite sides.Fastening device according to Claim 1 or 2, characterized in that the fixing devices are designed as latching openings (28) and the fixing elements (20) are designed as latching lugs, preferably latching lugs.Fastening device according to one of the preceding claims, characterized in that the base plate (12) has at least one retaining element (22) which extends in the same direction as the side walls (14) and is arranged between the side walls (14).Fastening device according to claim 4, characterised in that the frame foot (24) has at least one holding device for the holding element (22).Fastening device according to claim 5, characterised in that the holding device is designed as a holding opening and the holding element (22) is designed as a holding lug, preferably a holding lug.Fastening device according to claim 5 or 6, characterised in that a plurality of holding devices and a plurality of holding elements (22) are provided.Fastening device according to one of the preceding claims, characterized in that the retaining shoe (10) is designed for fastening two frame feet (24).Fastening device according to one of the preceding claims, characterized in that a frame rail (30) is provided, which is connected to the frame foot (24).Fastening device according to claim 9, characterised in that a frame stand (32) is provided, which is pivotably connected to the frame rail (30).

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