EP2281995B1 - Roller shutter - Google Patents

Description

The present invention relates to a roller shutter with two lateral, fixable in the reveal of a building opening guide rails and a rotatably supported on both sides winding rotations drum, on which the shutter, which is formed by interconnected via hinge means roller shutter rods, wound and unwound, which roller shutter rods in each case with the two end-side end regions, of which at least some each have at least one outwardly directed, over the surface of the roller shutter projecting first projection which extends over at least part of the width of the roller shutter rod, and at least one against the inside, on the Surface of the roller shutter bar projecting second projection, which extends over at least part of the width of the roller shutter bar, are equipped, in the guide rails, each with an inner and outer along the respective Führungsschi ene extending guide surface are provided, guided and held, each guide rail is formed as a U-profile, at the leg ends in each case a longitudinal thickening is provided, in each of which a longitudinal groove is attached, which are directed against each other, in which longitudinal grooves a T- shaped profile is inserted, wherein the upper sides of the crossbar of the T-shaped profile form the guide surfaces, and in the guide rails longitudinal abutment surfaces are mounted, on which the directed against the center of the roller shutter bar surfaces of the first and second projections can be supported, wherein the projections are attached to an end piece, which has a plug-in region, wherein the stop surfaces extend along a web, which is attached to a respective thickening. Such blinds are known in many ways and serve to protect openings in buildings, especially from bad weather. The building openings, in particular windows, are always carried out over a large area in order to keep the light inlet into the interior spaces as large as possible. Often, a whole room front is designed as a building opening, in which a window front is used, and can be additionally closed by a roller shutter.

Through these large-scale building openings, the burden on these shutters the building openings closing larger, especially by storm winds that can exert a considerable wind pressure on the shutters. In such loads, the individual roller shutter rods, from which the shutters are composed, bent relatively strong, through this bending there is a risk that the end portions of these roller shutter rods, which are guided in the two-sided guide rails are pulled out of these guide rails, whereby the corresponding shutter be severely damaged and can no longer fulfill the protective function of the building opening.

The publication EP 1 672 163 A1 shows a roller shutter guide with pivoting side brackets. These are not suitable to absorb large wind loads. In addition, the structure and the mechanism for pivoting these holders is very expensive.

The publication US Pat. No. 6,068,040 A1 shows a shutter for a gate whose side guides and guided therein holders are complicated. An optimal sliding of the brackets in the guides is not guaranteed, also can tilt the brackets in the guides, which can result in a disruption of the operation.

The publication GB 24 10 523 A also shows a roller shutter with complicated side guides, also here an optimal sliding is not guaranteed.

The object of the present invention is therefore to design a roller shutter for a building opening such that it can absorb these higher loads that the roller shutter rods can not extend from the lateral guide rails with strong deflection that optimum sliding of the individual roller shutter bars in the guide rails Opening and closing is achieved that an optimal support of the projections is obtained on the stop surfaces and that there is no diameter increase for the wound roller shutter. According to the invention, the solution of this object is achieved in that the roller shutter bars each consist of a hollow profile, the cavity is filled with foam, that the insertion is inserted into the cavity of the shutter bar and secured by a clamp that the directed against the outside first projection on a central portion of the width of the roller shutter rod extends and the inwardly directed second projection is formed of two parts, each extending over an upper portion and a lower portion of the width of the roller shutter rod. With this solution, a roller shutter can be massively reinforced, with these projections on the end portions of the roller shutter rods can be avoided that the roller shutter rods can extend even with strong deflection of the guide rails, whereby an improved protective function of this shutter is guaranteed. With this provision, the roller shutter rods used so far, which can be manufactured inexpensively, can continue to be used without change, excessive deflection of the roller shutter rods under high load is caused by the projections which are attached to the end regions of the roller shutter rods and which in the guide rails be held for the roller shutter, avoided. A costly reinforcement of the roller shutter bars is thereby not required, a massively greater load, for example by wind pressure can be accommodated by such a configuration of the roller shutter bars in an optimal manner.

In addition, it is achieved that the individual roller shutter bars can slide optimally in the guide rails when opening and closing the shutter, the guide rails can be made in a simple manner, the stop surfaces form an optimal support for the projections.

The roller shutter bars each consist of a hollow profile whose cavity is foamed with a foam. These hollow profiles can be optimally bent by, for example, an aluminum sheet
be prepared by the foaming of the cavity results in a low wall thickness of the hollow profile good bending stability.

The projections are mounted on an end piece which has a plug-in portion, which is inserted into the cavity of the roller shutter rod and fixed by means of a clamp, whereby a cost-effective production and a simple assembly can be achieved.

The outwardly directed first projection extends over a central portion of the width of the shutter bar, the inwardly directed second projection is formed of two parts, each extending over an upper portion and a lower portion of the width of the shutter bar. This ensures that when winding the shutter, consisting of these mutually hinged roller shutter bars, the projections are not additionally applying, so that there is no diameter increase for the wound roller shutter.

A flat support of the first and second projections on the two abutment surfaces is achieved when the two abutment surfaces are inclined to each other and form an angle which is about 160 °.

An embodiment of the invention will be explained in more detail by way of example with reference to the accompanying drawings.

• Fig. 1 und Fig. 2 in räumlicher Darstellung einen Rollladenstab mit einem Endstück, das auf den Rollladenstab aufsetzbar ist und an welchen die Vorsprünge angebracht sind;
• Fig. 3 eine Schnittdarstellung durch den Rollladenstab mit aufgesetztem Endstück entlang Linie IV-IV gemäss Fig. 4;
• Fig. 4 eine Draufsicht auf das Endstück eines Rollladenstabes mit eingesetztem Endstück;
• Fig. 5 und Fig. 6 in schematischer Darstellung die Abstützung der Vorsprünge des Rollladenstabes in den Führungsschienen bei starker Durchbiegung des Rollladenstabes; und
• Fig. 7 eine Ansicht auf eine Wickeltrommel mit aufgewickeltem Rollladen.

It shows:

• Fig. 1 and Fig. 2 in a spatial representation of a roller shutter rod with an end piece which can be placed on the roller shutter rod and to which the projections are mounted;
• Fig. 3 a sectional view through the roller shutter rod with attached end along line IV-IV according to Fig. 4 ;
• Fig. 4 a plan view of the tail of a shutter bar with inserted end piece;
• Fig. 5 and Fig. 6 a schematic representation of the support of the projections of the roller shutter rod in the guide rails in strong deflection of the roller shutter rod; and
• Fig. 7 a view of a winding drum with rolled blinds.

From the Fig. 1 and 2 the end region of a shutter bar 1 is shown. This shutter bar consists of a hollow section 2, the cavity 3 of this hollow section 2 is foamed, for example, in a known manner with a foam. Usually, this hollow profile made of aluminum and is obtained from an aluminum sheet by bending. On the upper longitudinal side 4, a bend 5 is attached to this shutter bar 1, which forms the shape of a hook. The lower longitudinal side 6 of this roller shutter rod 1 has a longitudinal groove 7, which is provided with a holding part 8. In a known manner, the bend 5 of a roller shutter rod 1 in the Hung longitudinal groove 7 and the holding part 8 of an adjacent roller shutter rod, whereby the shutter is formed.

In the front end portion 9 of the shutter bar 1, an end piece 10 is inserted, as will be described later in detail. This end piece 10 has a first projection 11 which is directed against the outside of the shutter, and which is above the surface 12 directed towards the outside of the shutter bar 1 above. The end piece 10 is provided with a second projection 13 which protrudes beyond the inner surface 14 of the shutter bar 1.

The end piece 10 has an insertion region 15, which is inserted and secured in the cavity 3 of the roller shutter rod 1. For attachment, for example, a bracket 16 are used. To be able to insert this insertion region into the roller shutter rod 1, a recess 18 is embedded in the foam 17 with which the cavity 3 of the roller shutter rod 1 is foamed, in order to create the required space for the insertion region 15 of the end part 10.

Out Fig. 3 is the cross section of the roller shutter bar 1 with the hollow section 2 can be seen, with inserted end portion 10, which is held on the bracket 16 in the shutter bar 1. Of course, other suitable types of fastening would be possible. From this Fig. 3 it can be seen how the first projection 11, which is attached to the end piece 10, protrudes beyond the outer surface 12 of the shutter bar 1. This first projection 11 extends only over a central portion of the width of the roller shutter rod 1. Also visible is the second projection 13 which is formed of two parts 19 and 20, wherein the one part 19 over an upper portion of the width of the roller shutter rod. 1 extends, while the second part 20 extends over a lower portion of the width of the shutter bar 1. The first part 19 and the second part 20 of the second projection 13 protrude beyond the inner surface 14 of the shutter bar 1.

Out Fig. 4 It can also be seen how the end part 10 is inserted into the shutter bar 1 and is secured to the bracket 16.

In the FIGS. 5 and 6 the guide rails 21 are shown, which are fastened in a known, not shown manner laterally in the reveal of a building opening, and in which the shutter, composed of the individual roller shutter bars 1, is inserted and guided in a known manner. The guide rail 21 is formed from a U-profile 22. At the leg ends 23 each have a longitudinal thickening 24 is provided, in each of which a longitudinal groove 25 is attached. The two longitudinal grooves 25 are directed against each other, in each longitudinal groove 25, a T-shaped profile 26 is inserted, form the tops 27 of the crossbar 28 of the T-shaped profile 26, the guide surfaces for the roller shutter bars 1 and therefore for the roller shutter. These T-shaped profiles are advantageously made of a plastic which is resistant and has good sliding properties

On the inside, attached to the respective thickening 24 is a web 29 which extends along the guide rail 21. These webs 29 have stop surfaces 30 on which the projections 11 and 13 of the end piece 10, which is fixed in the shutter bar 1, can support.

In Fig. 5 a situation is shown in which the roller shutter bars 1 are deflected outwards. Here, the second projection 13 of the end piece 10, which is fixed in the roller shutter rod 1, based on the stop surface 30 of the web 29, a slipping out of the shutter bar 1 from the guide rail 21 is thereby avoided.

A corresponding situation is in Fig. 6 shown here, the shutter is bent with the roller shutter bars 1 against the inside, for example, by a very strong gust of wind, the first projection 11 is based on the abutment surface 30 of the web 29, also here it is avoided that the shutter bar 1 from the guide rail 21st can slip out.

As in particular from Fig. 6 it can be seen, the two abutment surfaces 30, which are arranged on the outside and inside along the guide rail 1, inclined to each other, they enclose an angle α, which is about 160 °. By this arrangement it is achieved that the projections 11 and 13 of the end portions 10 of the bent roller shutter bars 1 are each supported in a planar manner on these abutment surfaces 30, whereby the power transmission is optimal.

Fig. 7 shows a wound on a winding drum 31 roller shutter, which is formed from one another suspended roller shutter bars 1. From this view it can be seen that the first projections 11 and the second projections 13, which are attached to the end pieces 10, which are inserted into the roller shutter bars 1, do not interfere with the winding, the rolled-up blinds experienced by this arrangement, no diameter increase , This is achieved because the first projection 11 extends only over a central portion of the width of the shutter bar 1, while the second projection 13 each extend over an upper portion and a lower portion of the width of the roller shutter rod 1.

Like also from this Fig. 7 As can be seen, not all roller shutter bars 1 must be equipped with end pieces 10 having first projections and second projections 13. Often it is sufficient if, for example, every second shutter bar 1 of a shutter with such end pieces 10 is provided with projections 11 and 13 to still record the loads occurring in an optimal manner, depending on the constellation of the roller shutter bars 1 and the male load, for example, everyone third shutter bar 1 be equipped with corresponding end pieces 10.

With this inventive design of the roller shutter bars 1 a shutter high loads can be absorbed without expensive precautions must be taken.

Claims (2)

1. Roller shutter with two lateral guide rails (21), able to be fixed in the soffit of a building opening, and a winding drum (31) rotatably borne on both sides in bearings, on which drum the roller shutter, which is made up of roller shutter members (1) connected to one another via articulation means, is able to be wound up and wound down, which roller shutter members (1) are each provided with the two frontal end regions (9), of which at least some end regions are provided with at least one outwardly directed first protrusion (11) protruding beyond the surface (12) of the roller shutter member (1), which protrusion extends at least over a portion of the width of the roller shutter member (1), and with at least one inwardly directed second protrusion (13) protruding over the surface (14) of the roller shutter member (1), which protrusion extends over a portion of the width of the roller shutter member (1), are guided and held in the guide rails (21), which are each provided, for this purpose, with an inner and outer guide surface running along the respective guide rail (21), whereby each guide rail (21) is designed as U section (22), on whose arm ends (23) a longitudinally running thickening (24) is provided in each case in which a longitudinal slot (25) is made in each case, which slots are directed toward one another, in which longitudinal slots (25) a T-shaped section (26) is inserted, whereby the surfaces (27) of the crosspiece (28) of the T-shaped section (26) form the guide surfaces, and provided in the guide rails (21) are longitudinally running stop surfaces (30), on which the surfaces turned toward the centre of the roller shutter member (1) of the first or respectively second protrusions (11, 13) are able to support themselves, whereby the protrusions (11, 13) are made on an end piece (10) which has an insertion region (15), whereby the stop surfaces run along a bar (29), which is provided on each thickening (24), characterized in that the roller shutter members (1) are each composed of a hollow section (2), whose hollow space (3) is filled with a foam material, in that the insertion region (15) is inserted into the hollow space (3) of the roller shutter member (1) and is fixed by means of a clip (16), in that the outwardly directed protrusion (11) extends over a central portion of the width of the roller shutter member (1) and the inwardly directed second protrusion (13) is formed by two parts (19, 20), which extend over an upper portion and a lower portion, respectively, of the width of the roller shutter member (1).
2. Roller shutter according to claim 1, characterized in that the two stop surfaces (30) are inclined with respect to one another and form an angle (α), which is approximately 160°.

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