Shading device with a shading element fixed to a profile

Abstract

The invention relates to a shading device with a rotatably mounted winding shaft from which a shading element (1) can be unwound, wherein at least one edge of the shading element (1) is attached to a profile (4) of the shading device, wherein the edge of the shading element (1) to be attached has a tongue (2) with a free end, wherein the free end of the tongue (2) points away from the edge of the shading element (1) and forms a barb, wherein the free end of the tongue (2) and the edge of the shading element (1) opposite the free end of the tongue (2) lie in a T-shaped groove (5) in the profile and the shading element (1) is guided through a slot of the T-shaped groove (5).

Description

[0001] The invention relates to a shading device with a rotatably mounted winding shaft from which a shading element can be unwound, wherein at least one edge of the shading element is attached to a profile of the shading device.

[0002] Such shading devices are known. Attaching an edge of the shading element to a profile of the shading device serves, in particular, to secure the shading element to an extension profile. For this purpose, the shading element is folded over and a loop is sewn, into which a rod is inserted. The loop with the inserted rod is then inserted into a keder receptacle in the profile. An alternative fastening method is known from EP 2 909 415 B1. In this method, the shading element has a half-zipper that is inserted into a first profile, this first profile being inserted into a receptacle of a second profile and designed in such a way that the first profile is prevented from tipping over in the second profile, even under load.

[0003] A disadvantage of both solutions is that an additional component in the form of a rod or profile is required to attach an edge of the shading element to a profile of the shading device.

[0004] The object of the invention is to further develop a shading device in such a way that it is possible to attach an edge of the shading element to a profile of the shading device in a simple manner.

[0005] This problem is solved according to the invention by a shading device according to claim 1. Advantageous embodiments of the invention are specified in the dependent claims.

[0006] A particularly advantageous feature of the shading device with a rotatably mounted winding shaft from which a shading element can be unwound, wherein at least one edge of the shading element is attached to a profile of the shading device, is that the edge of the shading element to be attached has a tongue with a free end, wherein the free end of the tongue forms a barb, wherein the free end of the tongue and the edge of the shading element opposite the free end of the tongue lie in a T-shaped groove in the profile and the shading element is guided through a slot of the T-shaped groove.

[0007] The core of the invention is to arrange a tongue on the edge of the shading element to be attached in such a way that it is oriented in the opposite direction to the shading element, so that the free end of the tongue forms a barb. This means that the tongue points away from the edge of the shading element. The term "opposite orientation" means that the tongue does not extend the shading element beyond the edge to be attached, but rather does not project beyond the edge, but extends from the edge along the shading element. This arrangement creates a barb at the free end of the tongue.

[0008] Furthermore, the profile features a T-shaped groove with a web and a crossbar running perpendicular to the web. The edge of the shading element to be attached and the free end of the tongue, pointing in the opposite direction, lie in the opposite ends of the crossbar of the T-shaped groove within the profile. The shading element is guided outwards through the web of the T-shaped groove, which forms a slot. This arrangement ensures a captive attachment of the edge of the shading element to the profile, as a load acting on the shading element causes the tongue, which forms the barb, to be pulled into the T-shaped groove with greater force.

[0009] The shading device may in particular be a vertical shading system, an awning, especially a folding arm awning or a patio roof awning, or a roller shutter.

[0010] The shading element can be, in particular, an awning fabric or a fly screen, a transparent curtain, a roller shutter, a blind, or fabric. It can also be, in particular, a printed advertising banner.

[0011] Preferably, the front end of the shading element in the direction of extension is attached to an extension profile; in particular, the profile to which the shading element is attached can be the extension profile.

[0012] The front end of the shading element can be attached to an extension profile that can be extended horizontally, vertically, or at an angle to the horizontal. The front end of the shading element is defined as the end that is unwound from the rotatably mounted winding shaft in the extension direction of the shading element. Preferably, the winding shaft is supported at both ends by a shaft bearing in a bearing bracket arranged at each end.

[0013] Alternatively or cumulatively, the profile to which the shading element is attached can be the winding shaft.

[0014] The edge fastening of the shading element according to the invention is therefore suitable both for connecting the shading element to an extension profile and for attaching the shading element to the winding shaft.

[0015] Preferably, the tongue has a greater bending stiffness than the shading element. The lowest possible bending stiffness of the shading element allows it to be wound onto the winding shaft without creasing. Conversely, the greater bending stiffness of the tongue increases the load-bearing capacity of the connection between the shading element and the profile via the tongue's insertion into the T-shaped groove.

[0016] Preferably, the tongue is welded, glued, and / or sewn to the shading element. Depending on the material used for the shading element, the preferred and most suitable joining technique can be employed to connect the tongue to the shading element. The different fastening methods can also be used cumulatively.

[0017] Preferably, a thickening is arranged at the free end of the tongue, running parallel to the edge of the shading element. Such a thickening at the free end of the tongue improves its retention in the T-shaped groove in the profile.

[0018] The thickening is particularly preferably fitted in a form-fitting manner into the T-shaped groove in the profile.

[0019] Preferably, the tongue has a half-zipper at its free end. This half-zipper, like a thickened section at the free end of the tongue, improves its retention in the T-shaped groove of the profile. A particular advantage is that such half-zippers are widely used in shading devices and are therefore a standard component. This allows for a particularly stable and durable connection between the shading element and the profile of the shading device in a very cost-effective manner.

[0020] Preferably, the tongue extends over the entire length of the edge or a section or several sections along the length of the edge of the shading element to be attached.

[0021] Preferably, the T-shaped groove in the profile extends over the entire length of the profile.

[0022] In the case that both the tongue extends over the entire length of the edge of the shading element to be fastened, and that the T-shaped groove in the profile extends over the entire length of the profile, the interaction results in a particularly load-bearing connection of the edge of the shading element to the profile of the shading device.

[0023] Preferably, the winding shaft is rotatably mounted in a housing. The housing protects the winding shaft and the shading element wound on it from dirt and weathering. Preferably, when the shading device is retracted, the housing is closed by an extension profile to which the front end of the shading element is attached.

[0024] Preferably, the winding shaft is movable back and forth in the extension direction; in particular, the winding shaft can be supported at its ends in sliding blocks that slide in cam guides of the bearing supports. Such back-and-forth movement of the winding shaft results in a floating bearing arrangement. The term "back-and-forth movement of the winding shaft in the extension direction" means that the degree of freedom of movement of the winding shaft has at least one component in the extension direction.

[0025] The shading device preferably has a support surface against which the winding bale wound on the winding shaft rests, particularly regardless of its diameter, which changes depending on the extension of the extension profile, and which counteracts any deflection of the winding shaft with the winding bale. The winding bale refers to the shading element wound on the winding shaft.

[0026] In combination with a floating bearing of the winding shaft, such a support surface ensures that the winding shaft with the shading element wound on it always rests against the support surface, regardless of the current diameter, which depends on the current extension of the shading element, and that deflection of the winding shaft is reliably prevented.

[0027] An embodiment of the invention is shown in the figures and is explained below. The figures show: Fig. 1 a side view of a shading element of a shading device and an extension profile; Fig. 2 the side view of the extension profile with the shading element attached to it.

[0028] Figure 1Figure 1 shows a side view of a shading element 1 of a shading device and a profile 4 to which an edge of the shading element 1 is to be attached. The shading device has a rotatably mounted winding shaft (not shown) from which the shading element 1 can be unwound.

[0029] A tongue 2 with a free end 3 is arranged on the edge of the shading element 1 to be attached. In the illustration in the figures, the shading element 1 is angled at 90°. In the area where the shading element 1 and the tongue 2 overlap, the tongue 2 is welded to the shading element 1.

[0030] The shading element 1 has a low bending stiffness, as it is designed to be wound onto the winding shaft of the shading device (not shown).

[0031] The tongue 2 attached to the shading element 1 has a higher bending stiffness than the shading element 1 itself. The tongue 2 is attached to the shading element 1 such that its free end points away from the edge of the shading element 1 and forms a barb. A thickening 3 is arranged at the free end of the tongue 2, which serves to fix the end of the shading element 1 to the extension profile 4. In the illustrated embodiment, the tongue 2 with the thickening 3 at its free end is formed by a half-zipper, as is frequently used in shading devices and typically interacts with another half-zipper as a counterpart. In the illustrated embodiment, the half-zipper with the thickening 3 at the free end of the more bending-stiff tongue 2 serves to fix the shading element 1 to the profile 4.

[0032] When using a half-zipper as a connecting element to another half-zipper, the half-zipper is attached to the shading element 1 as an extension of the edge of the shading element 1 to be attached, such that the half-zipper projects beyond the edge of the shading element. In the present invention, the half-zipper is attached to the edge of the shading element 1 in exactly the opposite way, so that the half-zipper forms a barb at the free end of the tongue 2 and does not project beyond the edge of the shading element 1.

[0033] In the illustrated embodiment, the tongue 2 is welded to the shading element 1. Alternatively or additionally, the tongue 2 can be glued and / or sewn to the shading element 1. This creates a connection with high load-bearing capacity and service life.

[0034] The extension profile 4 is formed by a hollow chamber profile. The extension profile 4 has a T-shaped groove 5, the web of which forms a slot 6 with a free passage through which the shading element 1 can be guided.

[0035] Figure 2 Figure 1 shows the side view of the extension profile 4 with the shading element 1 attached to it. In the assembled state, the free end of the tongue 2 and the edge of the shading element 1 opposite the free end of the tongue 2 lie in the T-shaped groove 5 in the profile 4 and the shading element 1 is guided through the slot 6 of the T-shaped groove 5.

[0036] Due to the high bending stiffness of the tongue 2, a tensile force acting on the shading element 1 cannot cause the shading element 1 and the tongue 2 attached to it to slip out of the T-shaped groove. Instead, the tongue 2 is securely held in the T-shaped groove 5 of the profile 4. The fixation, and thus the stability and load-bearing capacity of the assembly, is further increased by the thickening 3 in the form of a half-zipper at the free end of the tongue 2. The thickening 3 and the T-shaped groove 5 in the profile 4 are designed such that the thickening 3 fits snugly into the T-shaped groove 5 in the profile 4.

[0037] For assembly, the tongue 2 with the thickening 3 is inserted perpendicularly into the image plane according to the Figure 1 and 2 to be inserted into the T-shaped groove 5 in the profile 4.

[0038] In the illustrated embodiment, profile 4 is an extension profile. The same method of fastening an edge of a shading element 1 of a shading device according to the invention can also be used to fasten the shading element 1 to a winding shaft of the shading device, onto which the shading element 1 is wound.

Claims

1. Shading device with a rotatably mounted winding shaft from which a shading element (1) can be unwound, wherein at least one edge of the shading element (1) is attached to a profile (4) of the shading device, characterized by the fact that the edge of the shading element (1) to be attached has a tongue (2) with a free end, wherein the free end of the tongue (2) forms a barb, wherein the free end of the tongue (2) and the edge of the shading element (1) opposite the free end of the tongue (2) lie in a T-shaped groove (5) in the profile (4) and the shading element (1) is guided through a slot (6) of the T-shaped groove (5).

2. Shading device according to claim 1, characterized by the fact thatthe front end of the shading element (1) in the direction of extension is attached to an extension profile, in particular that the profile (4) to which the shading element (1) is attached is the extension profile.

3. Shading device according to claim 1 or 2, characterized by the fact that The profile (4) to which the shading element (1) is attached is the winding shaft.

4. Shading device according to one of the preceding claims, characterized by the fact that the tongue (2) has a greater bending stiffness than the shading element (1).

5. Shading device according to one of the preceding claims, characterized by the fact that the tongue (2) is welded and / or glued and / or sewn onto the shading element (1).

6. Shading device according to one of the preceding claims, characterized by the fact thata thickening (3) is arranged at the free end of the tongue (2) parallel to the edge of the shading element (1).

7. Shading device according to claim 6, characterized by the fact that the thickening (3) fits snugly into the T-shaped groove (5) in the profile (4).

8. Shading device according to one of the preceding claims, characterized by the fact that the tongue (2) has a half-zipper at its free end.

9. Shading device according to one of the preceding claims, characterized by the fact that the tongue (2) extends over the entire length of the edge or a section or several sections along the length of the edge of the shading element (1) to be attached.

10. Shading device according to one of the preceding claims, characterized by the fact that the T-shaped groove (5) in the profile (4) extends over the entire length of the profile (4).

11. Shading device according to one of the preceding claims, characterized by the fact thatthe winding shaft is rotatably mounted in a housing.

12. Shading device according to one of the preceding claims, characterized by the fact that the winding shaft is movable forwards and backwards in the extension direction, in particular that the winding shaft is supported at its ends in sliding blocks which slide in cam guides of the bearing supports.

13. Shading device according to one of the preceding claims, characterized by the fact that The shading device has a support surface against which the winding bale wound on the winding shaft rests, particularly regardless of its diameter which changes depending on the extension range of the extension profile, and which counteracts a deflection of the winding shaft with the winding bale.

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