EP1707732A1 - Blocking device for the slats of a roller shutter - Google Patents

Abstract

A roller blind piece (1) has a transmitting room (15) to which a hooking end (3) of an adjoining roller blind piece is clamped such that the roller blind pieces are tiltable. An end (8) of a pin (6) projects into the transmitting room. The pin is adjustable in the longitudinal direction and is thereby separable from the adjoining roller blind piece so as not to interfere in a groove (9) of the hooking end of the adjoining roller blind piece.

Description

The invention relates to a locking device for shutter slats, which each have a Verhakungsrand and a corresponding receiving edge on their longitudinal sides and by means of which are hingedly connected to each other, wherein the locking device secures adjacent shutter rods against relative movement in rod longitudinal direction.

Such a locking device with the features of the preamble of claim 1 is from the document DE-OS 22 29 079 known. This locking device secures adjacent shutter slats against relative displacement in rod longitudinal direction, but does not allow non-destructive disassembly of adjacent shutters bars, which is considered disadvantageous.

From practice U-shaped plug-in clips are known for plastic hollow chamber profiles, which have four Einsteckschenkel starting from a base, which must be pressed into the hollow profile. The Einsteckschenkel ensure both a correct positioning of the Einsteckklammern in the hollow profile by the correct spacing of the Einsteckschenkel and with two Einsteckschenkeln existing hook fastening in the hollow chamber profile. The base is made so long that it extends over the area of the hooking or the receiving edge and a lateral displacement prevented. The plug-in clips are produced as stamped parts. The tool for the production is very complicated and therefore expensive. Also, for each different roller shutter hollow profile is a special plug-in clip. which makes the matter even more expensive. If a composite of roller shutter rods roller shutter is provided with plug-in brackets disassembled, this is not possible without destroying the shutter rods, as the hooks move deep into the wall of the roller shutter rod and do not allow a non-destructive disassembly. Furthermore, one insertion clip is required for each roller shutter rod per page what the required number of parts and the use of Einsteckklammern also significantly more expensive.
In addition, locking clamps from the company. Schellenberg are available in the trade, which are manufactured as Drahtbiegeteil. They have a base, which comes to the cutting edge of the roller shutter rod to the plant. This base is shaped so that they emulate the vaults of the roller shutter rod. Go from the base, spaced from the end of two feet from which are inserted into the hollow chamber profile. The feet have for the clamping effect obliquely bent U-shaped parts, the last free end clawing with its cutting edge in the wall of the roller shutter rod. As a result, a non-destructive removal of the Arretierungsklammern is not possible here. The ends of the base extend over the receiving edge, or the hooking edge of the roller shutter rod and prevent the movement. Again, each shutter roller rod side a locking clip is required. The locking clip according to the prior art has 13 bends, which makes the preparation consuming and expensive. In addition, a different locking clip is required for each different size of the roller shutter rod.

The invention is therefore an object of the invention to provide a locking device for roller shutter rods of the type mentioned, by a cost-effective connection of the shutter slats is guaranteed to each other, in which the shutter slats in the mounted state can not be moved against each other, while the possibility of non-destructive disassembly single shutter bars.
This object is achieved in that the locking device is formed as a recorded in the rod body and in the receiving space with its one end protruding locking pin, that the Verhakungsrand of the adjacent roller shutter rod having a projecting into the receiving space in the end of the locking pin groove and that adjacent shutter rods relative to each other in an unavailable in conventional operation of the shutter angular position can be pivoted, in which the locking pin is disengaged from the groove and adjacent roller shutter slats relative to each other in rod longitudinal direction displaced and thus separable.

When using the locking device according to the invention, the production of the locking pin is inexpensive and the shutter slats can be destructively easy disassemble again. The shutter slats can only be slightly shifted to each other in the game. This ensures that the shutter slats in the non-guided area do not move against each other and do not hang on the guide when lowering the shutter.

According to an advantageous embodiment of the invention, each roller shutter slat made of plastic and is constructed in the manner of a hollow chamber profile, wherein the hollow chamber profile has at least one rib in the interior. This will on the one hand the roller shutter slats are rigidly twisted and the locking pin is provided with at least two attachment points.

According to a further advantageous embodiment of the invention, the locking pin is heated pressed into the roller shutter rod and can be cut off after a residence time. Thus, the impressions in very tough plastics is possible and after cooling, the locking pin sits securely and firmly in the roller shutter rod.

The locking pin is expediently made straight and the extension of the free end protrudes through a receiving wall the opposite end wall as well as through at least one rib and the present inside end has a tip. About the top of the locking pin can be pressed into the roller shutter rod and with only one additional rib already ensures a tight fit of the locking pin.

According to an advantageous development of the invention, the groove is present in the hooking edge exclusively in that area which rests in the receiving edge. This has the advantage that the external appearance of the roller shutter armor is not changed. From the outside is thus not apparent if and where a lock is present.

The groove in Verhakungsrand is according to an advantageous embodiment, about 2 mm wider than the diameter of the locking pin. Thus, the shutter slats can only slightly against each other Move and during assembly is sufficient clearance available to quickly and easily mount the roller shutter.

Preferably, locking pin can be processed as a wire from a roll. As a result, no separation of locking pins before assembly is required and the use as a wire is inexpensive, the cutting of the wire before or after insertion of the locking pin is possible.

Conveniently, the roller shutter bars are made as hollow chamber profiles made of plastic, aluminum, steel or die-cast and are preferably filled with foam. As a result, no limitation is given by the choice of materials, with a predrilling is required for different materials. By foaming a greater thermal insulation is present and the foam does not interfere with the introduction of the locking pin, but a better grip for the locking pin is achieved.

In high-security areas, preferably the shutter slats as solid profiles made of plastic, aluminum, steel or die-cast and a hole is inserted for insertion of the locking pin. Thus, the higher safety is guaranteed with no restriction of ease of installation.

For thin and less elastic materials of the roller shutter rods hold the locking pins not automatically in the roller shutter rod. However, this is ensured if according to a preferred embodiment of the invention, the locking pin with adhesive, preferably hot-melt adhesive is fixed.

It goes without saying that the features mentioned above and those yet to be explained below can be used not only in the respectively specified combination but also in another combination or alone without departing from the scope of the present invention.

Fig. 1:

einen Querschnitt durch einen Rolladenstab mit eingesetztem Arretierstift, in vergrößerter Darstellung,

Fig. 2:

eine Ansicht auf den Rolladenstab gemäß Fig. 1 in Pfeilrichtung II,

Fig. 3:

einen Querschnitt durch den Rolladenstab nach Fig. 1 mit einem weiteren Rolladenstab vor dem Einschwenken und

Fig. 4:

den Querschnitt durch die beiden Rolladenstäbe nach Fig. 2 im eingeschwenktem, und damit verschiebesicheren Zustand.

The idea underlying the invention is shown in the drawing and explained in more detail below. Show it:

Fig. 1:

a cross section through a roller shutter rod with inserted locking pin, in an enlarged view,

Fig. 2:

a view of the roller shutter rod of FIG. 1 in the direction of arrow II,

3:

a cross section through the roller shutter rod of FIG. 1 with a further roller shutter rod before swinging in and

4:

the cross section through the two shutter slats of FIG. 2 in eingeschwenktem, and thus non-shiftable state.

Fig. 1 shows a cross section through a roller shutter rod 1 which is made as a hollow chamber profile 2 made of plastic. On a narrow side a Verhakungsrand 3 is formed and on the opposite narrow side is the receiving edge 4. The longitudinal sides 14 are curved in one direction, wherein the buckle 13 is designed so that create the roller shutter rods 1 when pulling up to the roller. The direction of the radius of the interlocking edge 3 is the same, wherein the radius describes about 180 °. The radius of the receiving edge 4 is formed vice versa, so that the Verhakungsrand 3 can insert and is pivotally supported therein, the bulges 13 of the longitudinal sides are then always present in the same direction. In the hollow chamber profile 2, three internal ribs 5 are present.
The locking pin 6 is located in the roller shutter rod 1 a. He penetrates the end wall 7, which is present opposite the receiving edge 4. The area between the end wall 7 and the Receiving edge 4 forms the receiving space 15 into which the free end of the locking pin 6 projects. Furthermore, the locking pin 6 protrudes through the next two ribs 5. To accomplish this, the receiving edge 4 in the area in which the locking pin 6 is to be inserted, bent away in the elastic region and provided with a tip 12 locking pin 6 is by means of a device through the end wall 7 and the ribs 5 are pressed into the roller shutter rod 1. The impressions is done according to the embodiment so far that after releasing the receiving edge 4, the free end 8 of Arreitierstiftes 6 comes to rest in the interior of the receiving edge 4 and can not slip out.

As a variant, it is provided that the locking pin 6 is preheated pressed into the roller shutter rod 1. In this case, the receiving edge 4 does not have to be bent away. After cutting off the wire coil, the free end 8 of the Arreitierstiftes 6 is congruent with the outer wall of the receiving edge 4.
In the hooking edge 3 shown in Fig. 1 in the left side a groove 9 is incorporated. The groove 9 extends from the free end of the radius 10 to about the horizontal, so far that the diameter of the locking pin 6 completely free in the groove 9 rests. The lateral spacing of the groove 9 from the cutting edge of the roller shutter bar 1 is of course identical to the lateral spacing of the locking pin 6 from the cutting edge of the next roller shutter bar 1.

In the section shown in FIG. 2, the groove 9 is incorporated in the hooking edge 3 of the roller shutter bar 1. Of course, the groove 9 may also be semi-worked to avoid the notch effect.

Fig. 3 shows the assembly, or the dismantling of two shutter bars 1, which is possible in two ways. The shutter slats 1 are not laterally inserted according to the first type, but a roller shutter rod 1 is pivoted with its hooking edge 3 with description of a radius in the receiving edge 4. After the second type, the shutter slats 1 can be inserted laterally, but they must be pivoted so far that the Verhakungsrand 3 can slide past the locking pin 6. This is followed by swinging in. Of course, when pivoting the groove 9 and the locking pin 6 must be opposite.
Once the Einschwenkung is done, see Fig. 4, the locking pin 6 is in the groove 9 and the shutter slats 1 can not be moved laterally, or only in the game between the width of the groove 9 and the diameter of the locking pin. 6 ,

LIST OF REFERENCE NUMBERS

1

Venetian blind slat

2

Hollow chamber profile

3

Verhakungsrand

4

receiving edge

5

rib

6

locking pin

7

end wall

8th

free end

9

groove

10

radius end

11

hook radius

12

top

13

bulge

14

long sides

15

accommodation space

Claims (10)

Locking device for roller shutter slats, each of which has a hooking edge and a corresponding receiving edge on its longitudinal sides and can be connected to one another in an articulated manner, wherein the locking device secures adjacent roller shutter slats against relative displacement in the longitudinal direction of the rod, characterized in that the locking device is received in the rod body as a rod the receiving space (15) is formed with its one end (8) protruding locking pin (6) that the Verhakungsrand (3) of the adjacent roller shutter rod (1) .with the in the receiving space (15) protruding end (8) of the locking pin ( 6) corresponding groove (9) and that adjacent roller shutter rods (1) are pivotable relative to each other in an unavailable in conventional operation of the shutter angular position in which the locking pin (6) out of engagement with the groove (9) and adjacent roller shutter bars ( 1) relative to each other in Stablängsricht ung slidable and thus separable. Locking device according to claim 1, characterized in that each roller shutter rod (1) consists of plastic and constructed in the manner of a Hohlkarnmerprofiles (2), wherein the hollow chamber profile (2) has at least one rib inside (5). Locking device according to one of claims 1 to 2, characterized in that the locking pin (6) heated in the roller shutter rod (1) can be pressed and cut off after a dwell time. Locking device according to one of claims 1 to 3, characterized in that the locking pin (6) is straight and its receiving edge end (8) by a receiving edge (4) opposite the end wall (7) and by at least one rib (5) protrudes and its end located in the interior of the rod body has a tip (12). Locking device according to one of claims 1 to 4, characterized in that the groove (9) in the hooking edge (3) is present exclusively in that area which rests in the receiving edge (4). Locking device according to one of claims 1 to 5, characterized in that the groove (9) in Verhakungsrand (3) is about 2 mm wider than the diameter of the locking pin (6). Locking device according to one of claims 1 to 6, characterized in that the locking pin (6) can be processed as a wire from a roll. Locking device according to claim 7, characterized in that the shutter slats (1) are formed as hollow chamber profiles (2) and consist of plastic, aluminum, steel or die casting and are preferably foamed. Locking device according to claim 1, characterized in that the roller shutter rods (1) as solid profiles made of plastic, aluminum, steel or die-cast and a bore for insertion of the locking pin (6) is introduced. Locking device according to one of claims 1 to 9, characterized in that the locking pin (6) is fixed with adhesive, preferably hot-melt adhesive.

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