SUPPORTING STRUCTURE

Description

[0001] The invention relates to a supporting structure, in particular a stair tread, with a grating floor connected to at least one side stringer, wherein the grating floor has bearing bars and infill bars, wherein the supporting structure has at least one support profile, wherein the grating floor is connected to a side stringer at both end faces of the supporting structure and the bearing bars run perpendicular to the side stringers, wherein the support profile is arranged perpendicular to the bearing bars, i.e. parallel to the side stringers and the support profile is connected to a support profile.

[0002] From EP 3 106 584 A1 a supporting structure according to the preamble of claim 1 is known.

[0003] From US patent 2,994,417 A, a stair tread with grid-like arranged infill and bearing bars is known, wherein the bearing bars are connected to a support profile running perpendicular to the side stringer. The bearing bars and the support profile are welded together.

[0004] This has the disadvantage that, on the one hand, the production of the supporting structure requires comparatively complex and therefore costly welding and forming processes.

[0005] Document GB 2 378 713 A shows a supporting structure with two side walls. A grating, consisting of several interconnected bars, is arranged between these side walls and is connected to the side walls.

[0006] From EP 2 267 238 B1, a similar support structure is also known, in which the support profile comprises a U-profile and the load-bearing bars are preferably arranged at the ends between substantially horizontal flanges of the U-profile. However, in this support structure, the load-bearing bar direction runs parallel to the side stringers, while the stair landings run perpendicular to them. From an aesthetic point of view, this solution is therefore unsatisfactory. US 2009 / 307997 A1 discloses a grid panel with upright bracing structures. The grid panel has a plurality of side plates, a plurality of upright bracing structures, and a plurality of reinforcing plates. Each of the upright bracing structures is formed by welding together a reinforcing bar arranged at the top, an upright brace arranged between them, and a reinforcing bar arranged at the bottom.Each of the reinforced plates is rectangular and designed with a multitude of insertion holes on an upper section and a lower section.

[0007] The object of the present invention is to create a more material-saving solution in which the direction of the support bars corresponds to that of the stair landings and which is at the same time easier to automate.

[0008] This problem is solved according to the invention by connecting at least one support rod to the support profile.

[0009] This achieves, in a simple way, that the direction of the supporting bars corresponds to that of the stair landings, which is preferred from an optical point of view over the known solutions.

[0010] According to one embodiment of the invention, the support profile is designed as an I-profile or as a U-profile, with an I-profile being preferred.

[0011] It is still preferred that the support profile be materially bonded to the carrier profile.

[0012] A preferred embodiment consists in the carrier profile being connected to a side cheek.

[0013] In this context, it is preferred that the support profile is materially bonded to the side wall.

[0014] In this context, it is possible that the load-bearing bar is connected to the support profile by a form-fit, force-fit, or material-fit connection. A material-fit connection is preferred, which can be implemented, for example, as a welded joint, particularly by resistance projection welding.

[0015] In the support structure according to the invention, the floor can rest on the support profile. It is then held by the support profile.

[0016] There may be one support profile, which is then preferably arranged in the middle, or several support profiles may be provided.

[0017] An embodiment of the invention is explained in more detail below with reference to drawings.

[0018] They show Fig. 1 a perspective view of a support structure according to the invention with a grating floor, Fig. 2 a side view of the support structure according to Fig. 1 , Fig. 3 a front view of a supporting structure according to Fig. 1 , Fig. 4 a perspective view from the bottom right of a supporting structure according to Fig. 1 .

[0019] The Fig. 1 bis 4 Figure 1 shows a supporting structure which can be used in particular as a stair step.

[0020] The supporting structure 1 has a grating floor 2, which has bearing bars 3 and infill bars 4 and which is connected to a side wall 5 at each end face of the supporting structure 1. The grating floor is arranged such that the bearing bars run perpendicular to the side walls 5.

[0021] Furthermore, the supporting structure 1 has at least one support profile 6, which is arranged perpendicular to the load-bearing members, i.e., parallel to the side walls 5. The support profile 6 is preferably designed as an I-profile, as shown here, and is connected to a support profile 7, optionally also to a side wall 5. The support profile 7 can be a cold-formed or a hot-formed profile, the former being preferred.

[0022] The connection between the support profile 6 and the carrier profile 7 is preferably a material-bonded connection, in particular a welded connection. At least one support bar 3 is connected to the support profile 6, preferably via a material-bonded connection.

[0023] The support profile 7 is connected to a side cheek 5 by a form-fit, force-fit or material-fit connection, whereby this connection is also preferably a material-fit connection.

[0024] The support profile 7 is preferably cold-formed and has notches and / or bumps for resistance projection welding, which is the preferred joining method.

Claims

1. A load-bearing structure (1), in particular a stair tread, comprising a grating floor (2) which is connected to at least one side wall (5), the grating floor (2) having bearing bars (3) and filler bars (4), the load-bearing structure (1) having at least one support profile (6), the grating floor (2) being connected at both end faces of the load-bearing structure (1) to a respective side wall (5), the filler bars (4) extending perpendicular to the bearing bars (3) and the bearing bars (3) extending perpendicular to the side walls (5), the support profile (6) being arranged perpendicular to the bearing bars (3), namely parallel to the side walls (5), and the support profile (6) being connected to a carrier profile (7), characterised in that at least one bearing bar (3) is connected to the support profile (6).

2. Load-bearing structure (1) according to claim 1, characterised in that the support profile (6) is formed as an I-profile or as a U-profile.

3. Load-bearing structure (1) according to claim 1 or claim 2, characterised in that the support profile (6) is materially connected to the carrier profile (7).

4. Load-bearing structure (1) according to any one of claims 1 to 3, characterised in that the carrier profile (7) is connected to a side wall (5).

5. Load-bearing structure (1) according to any one of claims 1 to 4, characterised in that the carrier profile (7) is materially connected to the side wall (5).

6. Load-bearing structure (1) according to any one of claims 1 to 5, characterised in that the at least one bearing bar (3) is connected to the support profile (6) by a form-fit, force-fit or material connection.