SHADING DEVICE

Abstract

A shading device having a cloth that can be spread out, and is connected to a lead bar at its end pointing in the spreading-out direction and engages with a profiled guide rail on at least one side edge. The profiled guide rail is arranged in a channel-like chamber of a profiled holding rail and is resiliently supported on the profiled holding rail by means of a spring device, the spring device having a profiled spring rail. The profiled guide rail is inserted into a receiving space of the profiled spring rail that is delimited by spring clips and said profiled guide rail is floatingly mounted in the profiled spring rail, and the profiled spring rail is floatingly mounted in the channel-like chamber of the profiled holding rail and is supported on an internal wall of the chamber by means of at least one arm.

Claims

1. A shading device comprising: a profiled guide rail; a lead bar; and a cloth adapted to be spread out and is connected to the lead bar at an end pointing in a spreading-out direction, the cloth engaging with the profiled guide rail on at least one side edge, the profiled guide rail being arranged in a channel-like chamber of a profiled holding rail and being resiliently supported on the profiled holding rail via a spring device, wherein the spring device has a profiled spring rail, wherein the profiled guide rail is inserted into a receiving space of the profiled spring rail that is delimited by spring clips, and wherein the profiled guide rail is floatingly mounted in the profiled spring rail, and wherein the profiled spring rail is floatingly mounted in the channel-like chamber of the profiled holding rail and is supported on an internal wall of the chamber via at least one support arm, and wherein the spring clips together with the base portion form a C-shaped cross-sectional region of the profiled spring rail.

2. The shading device according to claim 1, wherein the support arm is an integral component of the profiled spring rail.

3. The shading device according to claim 1, wherein the profiled spring rail has at least two support arms.

4. The shading device according to claim 3, wherein the support arms together with a base portion that connects them form a C-shaped cross-sectional region of the profiled spring rail.

5. The shading device according to claim 4, wherein the base portion of the profiled spring rail together with the support arms and the spring clips form a C-in-C-shaped cross section.

6. The shading device according to claim 1, wherein the spring clips are clamped against the profiled guide rail from an outside.

7. The shading device according to claim 1, wherein the receiving space has an access opening, and wherein the profiled guide rail is adapted to be partially pulled out of the receiving space of the profiled spring rail through the access opening with elastic deformation of the spring clips as far as a maximum pull-out position.

8. The shading device according to claim 7, wherein the profiled guide rail rests against a stop in the maximum pull-out position.

9. The shading device according to claim 8, wherein the stop is formed on the profiled holding rail.

10. The shading device according to claim 7, wherein the profiled guide rail has a trapezoidal cross section that tapers toward the access opening.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will become more fully understood from the detailed description given hereinbelow and the accompanying drawings which are given by way of illustration only, and thus, are not limitive of the present invention, and wherein:

[0022] FIG. 1 shows a detail of the shading device in a perspective view,

[0023] FIG. 2 is the cross section II-II from FIG. 1, and

[0024] FIG. 3 is a cross-sectional view corresponding to FIG. 2, with the profiled guide rail being in its maximum pull-out position.

DETAILED DESCRIPTION

[0025] FIG. 1 shows a detail of a shading device 10 which has a cloth 11 which is connected, at its lower end, to a transverse lead bar 12 in a known manner. At the upper end of the cloth 11, there is a cloth shaft (not shown) on which the cloth 11 can be wound up and from which it can be unwound by pulling the lead bar 12 downward in the spreading-out direction V.

[0026] A lateral bracket 14 is provided along the vertical side edge of the cloth 11, which bracket has a vertical bar-like profiled holding rail 15, which is preferably made of aluminum or metal and can be attached to a building wall, for example. As shown in particular in FIG. 2, the profiled holding rail 15 has a channel-like chamber 17 in its interior, which chamber has a through-opening 13 on its side facing the cloth 11.

[0027] The cloth 11 has, on its vertical side edge, a bead-like thickened portion 25 which preferably extends over the entire height and by which the cloth 11 is inserted into a recess 27 in a profiled guide rail 16. In this way, the cloth 11 is interlockingly connected to the profiled guide rail 16 and can slide relative thereto in the longitudinal direction of the profiled guide rail. The profiled guide rail 16 is preferably made of plastics material and is also designed as an extruded profile. It has a cross section which tapers from its end facing away from the cloth 11 toward the cloth 11 and is conical or trapezoidal. The dimensions of the chamber 17 and the profiled guide rail 16 are adapted to one another such that the profiled guide rail 16 can move inside the chamber 17 transversely to its longitudinal direction but cannot be completely removed from the chamber 17 through the through-opening 13.

[0028] The profiled guide rail 16 is floatingly mounted in the chamber 17 of the profiled holding rail 15 by means of a spring device 18. The spring device 18 is formed by a profiled spring rail 19 which is inserted into the chamber 17. The profiled spring rail 19 is made of plastics material and is also designed as an extruded profile. On its side facing away from the cloth 11, the profiled spring rail 19 has a base portion 19a, on each of the opposite ends of which a support arm 20 is integrally formed. The base portion 19a and the two support arms 20 form a C-shaped outer cross-sectional region of the profiled spring rail 19.

[0029] Between the two support arms 20, two spring clips 22 are formed on the base portion 19a of the profiled spring rail 19. A receiving space 21 is formed between the spring clips 22, into which space the profiled guide rail 16 is inserted. The spring clips 22 surround the profiled guide rails 16 in portions and exert a clamping force on the profiled guide rail 16 that holds the profiled guide rail 16 in the receiving space 21. The spring clips 22 form together with the base portion 19a a further C-shaped cross-sectional region, and therefore the profiled spring rail 19 has a C-in-C cross section.

[0030] Projections 26 projecting into the through-opening 13 are formed on the profiled holding rail 15, which projections reduce the width of the through-opening 13 such that the profiled guide rail 16 cannot be pulled out through the through-opening 13. Stops 24 are formed on the projections 26, which stops limit a maximum pull-out movement of the profiled guide rail 16 from the inner chamber 17 of the profiled holding rail 15 and from the receiving space 21 of the profiled spring rail 19.

[0031] If an external force, for example a wind force, acts on the cloth 11, this results in the cloth 11 exerting a tensile force on the profiled guide rail 16 via the thickened portion 25, as a result of which the profiled guide rail 16 is pulled out of the receiving space 21 of the profiled spring rail 19 with elastic deformation of the spring clips 22 and counter to the spring forces exerted on the profiled guide rail 16 by the spring clips 22. The maximum pull-out position is defined by the profiled guide rail 16 resting against the stops 24 of the projections 26 of the profiled holding rail 15, as shown in FIG. 3. The profiled guide rail 16 is, however, still located, with its rear portion facing away from the cloth 11, inside the receiving space 21 of the profiled spring rail 19 and is held by the deformed spring clips 22. As soon as the load on the cloth 11 is released, the spring clips 22 pull the profiled guide rail 16 back into the receiving space 21 of the profiled spring rail 19 such that the starting position shown in FIG. 2 is reached again.

[0032] The invention being thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the invention, and all such modifications as would be obvious to one skilled in the art are to be included within the scope of the following claims.