FR3053994A1 - REINFORCED BLADE FOR SHUTTER - Google Patents

Abstract

The present invention relates to a reinforced blade (1, 1 ') for roller shutter, the reinforced blade (1, 1') comprising a profile (2, 2 ') in which at least one chamber (5', 5 ') is formed. '), fixing means (6, 7, 8) of the reinforced blade (1, 1'), at least one insert (9) disposed in the at least one chamber (5 ', 5' '), characterized in that the insert (9) has a shape cross-section selected from an ovoid shape, an elliptical shape and a circular shape and the maximum distance separating two points on the outer surface of the insert (9) is smaller than at the height and width of the chamber (5 ', 5' '), so that the insert (9) is able to move in the chamber (5', 5 ''). The present invention also relates to a shutter (13) comprising at least one reinforced blade (1, 1 ') according to the invention.

Description

REINFORCED BLADE FOR ROLLER SHUTTER

The present invention relates to the field of roller shutters and relates more particularly to a reinforced blade for a roller shutter and to a roller shutter equipped with such reinforced blades.

Roller shutters are commonly used to close the windows of a home, for example windows. However, they are a weak point against intrusions. In particular, when they are made of plastic, they can easily and quickly be fractured. Rolling shutter manufacturers must therefore guarantee that their products meet the certifications recommended by insurers. For example in France, the A2P (prevention prevention protection) certification “Building Windows and Closings” establishes a level of security linked to the resistance time and the type of perpetrator, while attesting to the quality of the product. The higher the level, the more the products have a high resistance to burglary attempts.

It is known to reinforce a rolling shutter by the introduction of inserts into the slats, as for example in the Spanish patent applications ES2463942, British GB2404215 or European EP1384848. In European patent application EP1724433, steel rod fittings are arranged lengthwise of the shutter blades and fixed to the ends of the blades. Inserts made of other materials can be used, for example a ceramic material wrapped in an outer sheet of a fiber-reinforced resin matrix

However, low resistance in the case of British application GB2404215, or of wire cables in the case of American patent US5377738.

such devices present an attempt to break in, in particular by piercing the blade, since such inserts are easily weakened by perforation.

Thus, on the one hand, to achieve the highest possible level of A2P certification, it is necessary that the anti-intrusion devices of roller shutters have a high overall mechanical resistance. But on the other hand, the anti-intrusion devices of roller shutters must brake as much as possible the criminals in their attempts to deteriorate the shutters in order to allow time to alert the emergency services, or even to dissuade the criminals from continuing.

There is therefore a problem of reliability of the existing burglar-proof shutters and, at the same time, it is necessary to slow down as many burglary attempts as possible and thus to offer burglar-proof shutters ensuring the best security of goods and people.

The applicant proposes to solve these problems by the use of shutter blades comprising metal inserts of rounded shape, so as not to offer a grip to a drill bit. In addition, the inserts are arranged and dimensioned so as to rotate freely in the blade under the effect of the thrust and the rotation of the drill. Thus, it is not possible to immobilize and therefore to weaken the insert with a view to the next stage of deterioration of the blade, with an ax, for example, which delays burglars in their attempted break-in.

The present invention therefore relates to a reinforced blade for a roller shutter, the reinforced blade comprising:

a profile having two opposite side faces connected by their longitudinal edges by border faces to form a hollow profile, and in which is formed at least one chamber extending longitudinally over at least part of the length of the profile, the chamber having a length, a height and a width;

- means for fixing the reinforced blade formed on the edge faces of the profile;

- at least one insert placed in the at least one chamber, characterized in that:

the insert extends over at least part of the length of the at least one chamber and has a cross section of shape chosen from an ovoid shape, an elliptical shape and a circular shape and, in any cross section plane of the reinforced blade comprising the insert, the maximum distance separating two points on the external surface of the insert is less than the height and the width of the chamber, so that the insert is able to move at least in the height direction of the room.

According to a particular characteristic of the invention, the insert extends over the entire length of the at least one chamber.

According to a particular characteristic of the invention, the at least one chamber extends over the entire length of the reinforced blade.

According to a particular characteristic of the invention, the reinforced blade comprises at least two chambers, two adjacent chambers being separated by a reinforcing wall connecting the two lateral faces of the profile.

According to a particular characteristic of the invention, the reinforced blade comprises at least one insert in the at least two chambers.

According to a particular characteristic of the invention, the reinforced blade is made of extruded aluminum.

According to a particular characteristic of the invention, the insert is made of stainless steel.

According to a particular characteristic of the invention, at least one anti-noise element is disposed on at least part of the external surface of the insert.

According to a particular characteristic of the invention, the anti-noise element is a sleeve covering at least part of the length of the insert.

According to a particular characteristic of the invention, the anti-noise element is made of a plastic material.

The present invention also relates to a roller shutter, characterized in that it comprises at least one reinforced blade as described above, each reinforced blade being connected on either side to an adjacent blade by the fixing means. According to a particular embodiment, all the blades of the rolling shutter are reinforced blades according to the present invention.

According to a particular characteristic of the invention, at least one blade in two is a reinforced blade as described above.

According to a particular characteristic of the invention, all the blades are reinforced blades as described above.

To better illustrate the object of the present invention, we will describe below, by way of illustration and not limitation, a particular embodiment, with reference to the accompanying drawings.

In these drawings:

- Figure 1 is a cross-sectional view of a reinforced blade according to a first embodiment of the present invention;

- Figure 2 is a cross-sectional view of a reinforced blade according to a second embodiment of the present invention;

- Figure 3 is a cross-sectional view of part of a roller shutter fitted with reinforced blades according to the second embodiment.

In Figure 1, it can be seen that there is shown a reinforced blade 1 of rolling shutter seen in cross section. Usually, the reinforced blade 1 is constituted by a hollow section 2. Profile 2 can be made of plastic but is preferably made of extruded aluminum. In a known manner, the profile 2 is of generally parallelepiped shape and comprises two lateral faces 3 which are parallel opposite, connected by their longitudinal edges by two parallel edge faces 4, thus defining a hollow profile. As shown in Figures 1 to 3, and usually encountered, the side faces 3 are advantageously curved so as to facilitate winding of the shutter.

The side faces 3 and the edge faces 4 define a chamber 5 oriented in the direction of the length of the reinforced blade 1. It should be noted that the chamber 5 can extend longitudinally over the entire length of the profile 2 or over a part of the length of the profile 2

The reinforced blade 1 comprises fixing means 6, 7, they so as to couple the blades 1 between constituting a rolling shutter

As conventionally encountered, the fixing means 6, 7, comprise the outside of a hook the face of disposed on the upper border surface 4, preferably over the entire length of the profile 2, and a receiving cavity 7 disposed on the surface outside of the lower edge face 4, also preferably over the entire length of the profile 2. Such a receiving cavity 7 is intended to receive the hook 6 of another blade 1 located below. The receiving cavity 7 comprises in the lower part an opening extending over the same length as the cavity 7 and defining a hook 8, back under the cavity 7, so as to couple two blades 1 by insertion of the hook 6 of a lower blade in the cavity 7 of an upper blade, and preferably clipping the hook 6 of the lower blade onto the hook 8 of the upper blade. Such fastening means are advantageously made in one piece with the profile 2, in particular when the profile 2 is shaped by extrusion, and extend over the entire length of the blade. It is conceivable to use other means of fixing rolling shutter blades known to those skilled in the art.

Advantageously and according to a particular non-limiting embodiment of the present invention, the total height of the blade 1 is 71 mm. Those skilled in the art can choose another total height according to the characteristics of the shutter.

Advantageously and according to a particular non-limiting embodiment of the present invention, the total width of the blade 1 is 14 mm. Those skilled in the art will be able to choose another total width according to the characteristics of the shutter

The reinforced blade 1 comprises an insert 9 disposed inside the chamber 5. Such an insert 9 extends over the entire length of the reinforced blade 1. However, it is possible to envisage embodiments in which the insert 9 does not extends only partially over the length of the reinforced blade 1. The insert 9 comprises a rod 10 which has, in the embodiment shown, a circular section, but which could also have an ovoid, elliptical or circular cross section. Thus, due to the continuous curvature over the entire outer surface of the insert 9, the insert 9 does not provide a grip for a drill bit which would penetrate a lateral face 3 of the reinforced blade 1. The insert 9 is preferably cylindrical or conical.

The rod 10 is advantageously made of stainless steel, but could also be made of another resistant metallic material, such as aluminum, steel, or more generally metal alloys.

In any cross-sectional plane of the reinforced blade 1 comprising the insert 9, the maximum distance between two points of the external surface of the insert 9 must be less than the minimum distance between two points of the lateral faces 3 so that the insert 9 can rotate freely along an axis parallel to the direction of the length of the reinforced blade 1, and move, at least in the direction of the height, inside the chamber 5. Thus, under the effect the thrust of the drill of a drill, on the one hand the insert 9 does not offer a grip on the drill, and on the other hand the insert 9 turns on itself and moves in the chamber 5. A reinforced blade 1 according to the present invention therefore prevents a burglar from immobilizing the insert 9 by means of a drill and consequently delays it in its attempted break-in.

It could of course be envisaged in the context of the present invention that the chamber 5 comprises more than one insert 9.

The insert 9 may include an anti-noise element 11. Such an anti-noise element 11 makes it possible to absorb the shocks of the insert 9 against the lateral faces 3 and the edge faces 4. In fact, due to the fact that the insert 9 is movable in the chamber 5, the opening or closing of the shutter can cause shaking of the blades, which can set the insert 9 in motion. The shocks of the insert 9 against the faces 3, 4 can lead to unpleasant and repeated noise for the user. In FIGS. 1 to 3, the anti-noise element 11 is shown by a sleeve 11 wrapped over the entire length of the rod 10. Such a sleeve may, for example, only extend over part of the length of the rod 10. Also, it is conceivable that the anti-noise element 11 comprises a succession of seals distributed over the entire length of the rod 10. In the case where the insert 9 comprises such a anti-noise element 11, it is necessary that the maximum distance between two points of the external surface of the rod 10 / anti-noise element 11 assembly is less than the minimum distance between the lateral faces 3 of the profile 2, so that the rod assembly 10 / anti-noise element 11 is mobile, in rotation and in translation, in chamber 5. Such an anti-noise element 11 is advantageously made from plastic, in particular PVC. It should be noted that the anti-noise element could also consist of two collars each at one end of the rod 10.

Figure 2 shows a cross-sectional view of a reinforced blade 1 'according to a second embodiment of the present invention. The reinforced blade 1 ', similarly to the embodiment described above, comprises a profile 2' comprising lateral faces 3 and edge faces 4, fixing means 6, 7, 8. The profile 2 'comprises two chambers 5 ', 5' ', separated by a transverse wall 12 positioned substantially halfway up the profile 2' and connecting the two lateral faces 3. Advantageously, such a transverse wall 12 is a reinforcing wall 12, intended to reinforce the mechanical rigidity of the profile 2 '. The reinforcing wall 12 extends over the entire length of the reinforced blade 1 '. The reinforcing wall 12 can be made in one piece with the profile 2 ', for example by extrusion. It could also be envisaged that the reinforcing wall 12 is continuous or perforated for the purpose of saving material, either lengthwise or widthwise of the reinforced blade 1 '.

Preferably, the thickness of the reinforcing wall 12 is 1.2 mm.

Similarly to the embodiment described above, each chamber 5 ', 5' 'includes an insert 9. In the view of FIG. 2, it can be seen that each insert 9 comprises a rod 10 and an anti-noise element 11 of sleeve type.

Different possible combinations should be considered. Profile 2 can include more than two 5 ', 5' 'chambers. The chambers 5 ′, 5 ″ can extend over all or part of the length of the reinforced blade 1 ′. All 5 ', 5' 'chambers can include an insert 9 ίο or only part of the 5', 5 '' chambers include an insert 9. In addition, the inserts 9 extend over all or part of the 5 'chamber , 5 ''.

As previously, the chambers 5 ', 5' 'may include more than one insert 9 and the inserts 9 may or may not include an anti-noise element 11.

In FIG. 3, it can be seen that part of a rolling shutter 13 has been represented. For reasons of convenience, FIG. 3 represents only two blades 1 ′, 14. The rolling shutter 13 comprises a reinforced blade 1 'according to the present invention and an unreinforced blade 14. In the present case, the reinforced blade 1' is of the type with two chambers 5 ', 5' 'according to the embodiment of Figure 2, each comprising an insert 9 of the rod 10 / anti-noise sleeve type 11. It is possible to envisage any type of reinforced blade 1, 1 ′ as described above. The unreinforced blade 14 is similar to a reinforced blade 1 ', comprising two chambers 5', 5 '' but having no insert 9. It can be envisaged that such an unreinforced blade 14 comprises a single chamber 5 or more two 5 ', 5' 'bedrooms.

In Figure 3, we can see that the reinforced blade 1 'and the unreinforced blade 14 are coupled in the usual way by clipping the hook 6 of the unreinforced blade 14 with the receiving cavity 7 / hook 8 assembly of the blade reinforced 1 '.

As regards the unreinforced blade 14, one can also envisage any other type conventionally encountered by a person skilled in the art in the field of roller shutters, provided that it can be coupled to the reinforced blade 1, 1 'of the present invention.

On the other hand, the rolling shutter 13 may include

at least a reinforced blade, 1 ' only of the blades strengthened 1 1 ', or various alternations of blades strengthened 1 1 '/ blades no reinforced 14. Of way

advantageous, a rolling shutter 13 comprising only reinforced blades 1, 1 ′ provides optimum security and a rolling shutter 13 comprising alternating blades, one in two of which is a reinforced blade 1, 1 ′ offers a good security / cost compromise.

Also, according to the embodiment where the insert 9 extends only over a part of the length of the reinforced blade 1, 1 ', it is preferable that the reinforced blades 1, 1' are alternated so that the arrangement of the inserts 9 relative to each other guarantees total security of the roller shutter 13 over its entire surface.

Finally, it should be noted that such reinforced blades 1, 1 ′ for rolling shutters are configured both for rolling shutters for windows / building doors and for other types of rolling shutters. For example, the present invention is applicable for slats for rolling shutters for swimming pools, and for rolling shutters for swimming pools comprising such reinforced slats, so that such rolling shutters have sufficient solidity to ensure the safety of persons who fall on them. -this.

Claims (13)

1 - Reinforced blade (1, 1 ') for rolling shutters, the reinforced blade (1, 1') comprising: - a profile (2, 2 ') having two opposite side faces (3) connected by their longitudinal edges by edge faces (4) to form a hollow profile (2, 2'), and in which is formed at least a chamber (5 ', 5' ') extending longitudinally over at least part of the length of the profile (2, 2'), the chamber (5 ', 5' ') having a length, a height and a width ; of the fixing means (6, 7, 8) of the blade enhanced d, 1 ') trained on faces of border (4) of the profile (2, 2 '); at minus an insert (9 ) willing in 1 'to minus one room (5 ', 5' '), characterized in that: the insert (9) extends over at least part of the length of the at least one chamber (5 ', 5' ') and has a cross section of shape chosen from an ovoid shape, an elliptical shape and a circular shape and, in any cross-sectional plane of the reinforced blade (1, 1 ') including the insert (9), the maximum distance separating two points on the external surface of the insert (9) is less than the height and to the width of the chamber (5 ', 5' '), so that the insert (9) is able to move at least in the height direction of the chamber (5', 5 ''). 2 - Reinforced blade (1, 1 ') for rolling shutter according to claim 1, characterized in that the insert (9) extends over the entire length of the at least one chamber (5', 5 '' ). 3 - Reinforced blade (1, 1 ') for rolling shutter according to claim 1 or claim 2, characterized in that the at least one chamber (5', 5 '') extends over the entire length of the reinforced blade (1, 1 '). 4 - Reinforced blade (1, 1 ') for rolling shutter according to one of claims 1 to 3, characterized in that the reinforced blade (1, 1') comprises at least two chambers (5 ', 5' ') , two adjacent chambers (5 ', 5' ') being separated by a reinforcing wall (12) connecting the two lateral faces (3) of the profile (2'). 5 - Reinforced blade (1, 1 ') for rolling shutter according to claim 4, characterized in that the reinforced blade (1, 1') comprises at least one insert (9) in the at least two chambers (5 ', 5 ''). 6 - Reinforced blade (1, 1 ') for rolling shutter according to one of claims 1 to 5, characterized in that the reinforced blade (1, 1') is made of extruded aluminum. 7 - Reinforced blade (1, 1 ') for rolling shutter according to one of claims 1 to 6, characterized in that the insert (9) is made of stainless steel. 8 - Reinforced blade (1, 1 ') for rolling shutter according to one of claims 1 to 7, characterized in that at least one anti-noise element (11) is disposed on at least part of the external surface of the insert (9). 9 - Reinforced blade (1, 1 ') for rolling shutter according to claim 8, characterized in that the noise-canceling element (11) is a sleeve (11) covering at least part of the length of the insert (9). 10 - Reinforced blade (1, 1 ') for rolling shutter according to one of claims 8 or 9, characterized in that the anti-noise element (11) is made of a plastic material. 11 - Roller shutter (13), characterized in that it comprises at least one reinforced blade (1, 1 ') according to 5 one of claims 1 to 10, each reinforced blade (1, 1 ') being connected on either side to an adjacent blade by the fixing means (6, 7, 8). 12 - Roller shutter (13) according to claim 11, characterized in that at least one blade in two 10 is a reinforced blade (1, 1 ') according to one of claims 1 to 10. 13 - Roller shutter (13) according to claim 11, characterized in that all the blades (1, 1 ') are reinforced blades according to one of claims 1