EP3885524B1 - Abutment device for roller shutter - Google Patents

Description

Technical field of the invention

The present invention relates to the general field of rolling shutters contained in a trunk. It relates more specifically to a stop device for a rolling shutter or the like limiting the winding of said rolling shutter.

State of the art

Roller shutters comprise, in a conventional manner, a prefabricated box containing a winding shaft, not shown, resting by its ends on bearings integral with the end flanges of said box and to which is hung an apron, not shown, formed of blades horizontal hinged together and whose ends move vertically inside guide rails, not shown, secured to a window of a building associated with the roller shutter or the masonry of the building surrounding said window. Thus, to raise the roller shutter, the apron is wrapped around the shaft and, on the contrary, to lower the roller shutter, the apron is unrolled.

However, during the ascent, it is necessary to stop the travel of the apron, at the end of the ascent, because it is imperative that the ends of the last slat of the apron remain in the guide channels or, failing that, can fit there. engage easily, so that the shutter is always guided during the successive manoeuvres.

To do this, stops are already known mounted at the lateral end of one of the final slats of the apron, these stops moving inside the wings and therefore not being visible. The patent EN 2.804.466 gives an embodiment of a hidden stopper: the latter is inserted on one of the walls of the final slat of the roller shutter, so as to project with respect to at least one of the side surfaces and/or the front surfaces . The abutment is fixed to the blade by means of a drilling or riveting and by means of fastenings of the screw, rivet or similar type. This hidden stopper cooperates with a stopper positioned at the upper end of the lateral slider projecting inside said slider relative to the first stopper.

This exemplary embodiment of abutment is certainly effective, but nevertheless has the drawback of allowing at least part of the final slat to obstruct the light of day and therefore of reducing the brightness inside the room equipped with the roller shutter.

The patent EP0092122A2 shows a device for limiting the winding movement of a rolling shutter. It shows in particular in its figure 13 a stop device for a roller shutter, said roller shutter comprising two guide slides provided at their upper end with a guide element and an apron formed of a plurality of horizontal blades, one of which lower final slat provided at each of its lateral ends with an internal housing, articulated between them and whose lateral ends move vertically inside said guide slides, wherein said abutment device comprises a lever pivoting about a horizontal axis perpendicular to the longitudinal axis of said housing and comprising at least one protuberance which moves inside the associated guide slide and is capable to come into abutment against the guide element to block the final slat when the roller shutter is raised, the lever pivoting between a "low" position and a "high" position in which the protrusion does not protrude from said lower longitudinal edge .

Summary of the invention

The object of the present invention is therefore to propose a roller shutter stopper device making it possible to limit the stroke of the latter when it is rolled up by a roller shutter box while guaranteeing maximum opening and perfect closing of said roller shutter. to obtain maximum brightness or darkness inside the room fitted with the roller shutter.

In accordance with the invention, there is therefore proposed an abutment device for a rolling shutter comprising two guide rails provided at their upper end with a guide element and an apron formed of a plurality of horizontal slats, including a final slat bottom provided at each of its lateral ends with an internal housing, articulated between them and whose lateral ends move vertically inside said guide slides, said stop device is configured to be inserted at least partially in each housing internal in a direction parallel to the longitudinal axis of the latter and comprises a pivoting lever, when the abutment device is inserted, around a horizontal axis perpendicular to the longitudinal axis of said housing and comprising at least one protrusion which, when the abutment device is inserted, moves inside the associated guide rail and is capable of coming into abutment against the guide element to block the final slat when the roller shutter is raised, the lever pivoting between a "low" position in which the protrusion protrudes from the lower longitudinal edge of said final slat allowing the total obliteration of said final slat when said roller shutter is completely open, and a "high" position in which the protrusion does not protrude from said lower longitudinal edge allowing total concealment when said roller shutter is completely closed.

Each lever preferably comprises at least one abutment able to bear against the internal wall of the housing of said final slat, when said lever is in the "down" position.

According to an advantageous embodiment, each lever is in the overall shape of an L and comprises a first generally horizontal wing and a second wing coming from one of the ends of said first wing and extending downwards substantially perpendicular to the latter, said lever pivoting at the free end of its first wing and said protuberance being integral with the free end of said second wing and extending on either side of the latter in a direction parallel to the pivot axis of the lever.

Each lever advantageously comprises two stops arranged, diagonally opposite, respectively along the lower and upper edge of its first wing.

According to one embodiment, the abutment device comprises a support on which each lever is pivotally mounted.

Each support advantageously comprises return means tending to return the lever to its "high" position.

Preferably, each support consists of a first part having a recess so that its cross-section is in the overall shape of a C, and of a second part being an integral plate bearing against said first part so as to close the recess, the lever being partly arranged inside the support in said recess.

The first part of the support has cutouts to allow, when said lever is in the "down" position, the passage of the stop(s).

The return means are advantageously a flexible tab elastically secured to the first part of said support.

Brief description of figures

• [Fig 1] est une vue en perspective partielle d'un volet roulant en situation de fonctionnement dont la lame finale est munie à chacune de ses extrémités latérales du dispositif de butée selon l'invention,
• [Fig 2] est une vue en perspective d'un exemple de réalisation du dispositif de butée selon l'invention,
• [Fig 3] est une vue en perspective partielle du dispositif de butée de la figure 2 sans son carter,
• [Fig 4] est une vue en perspective de la première partie du support du dispositif de butée de la figure 2,
• [Fig 5] est une vue schématique en coupe verticale de l'extrémité de la lame finale de la figure 1 lorsque que le volet est fermé,
• [Fig 6] est une vue schématique en coupe verticale de l'extrémité de la lame finale de la figure 1 lorsque que le volet est presque totalement ouvert,
• [Fig 7] est une vue schématique en coupe verticale de l'extrémité de la lame finale de la figure 1 lorsque que le volet est totalement ouvert.

Other advantages and characteristics will emerge better from the following description of an embodiment of the invention with reference to the appended figures in which:

• [ Fig 1 ] is a partial perspective view of a roller shutter in operating condition, the final slat of which is provided at each of its lateral ends with the stop device according to the invention,
• [ Fig 2 ] is a perspective view of an embodiment of the abutment device according to the invention,
• [ Fig.3 ] is a partial perspective view of the abutment device of the picture 2 without its casing,
• [ Fig 4 ] is a perspective view of the first part of the support of the abutment device of the picture 2 ,
• [ Fig.5 ] is a schematic view in vertical section of the end of the final slat of the figure 1 when the shutter is closed,
• [ Fig 6 ] is a schematic view in vertical section of the end of the final slat of the figure 1 when the shutter is almost completely open,
• [ Fig 7 ] is a schematic view in vertical section of the end of the final slat of the figure 1 when the shutter is completely open.

Description of embodiments

With reference to figures 1 to 7 , the movable stop device 1 according to the invention is provided for a roller shutter 2 or the like comprising an apron 3 formed of a plurality of horizontal slats comprising an internal housing in the overall shape of a hollow tube, including a lower final slat 4, hinged together and whose lateral ends move vertically inside guide rails 5 integral with the window associated (not shown) with the roller shutter 2 or with the civil engineering surrounding said window, said apron 3 being hooked and set in motion by a winding shaft resting at its ends on bearings (not shown) integral, in a conventional manner, with the end plates of a box, not shown. Thus with such a configuration, it is clear that, to close the roller shutter 2, the apron 3 is brought up by winding it around the winding shaft and, on the contrary, to open the roller shutter 2, apron 3 by unrolling it.

Each guide slide 5 is advantageously provided at its upper end with a guide element 6, commonly called a tulip, serving to guide the blades of the apron 3 during the successive maneuvers of winding and unwinding of said apron 3 around the shaft. winding.

In the present application, the roller shutter 2 described is adapted to be unrolled along a vertical plane along the guide rails 5 vertical. It goes without saying that the roller shutter 2 can also be unrolled along a more or less inclined plane with respect to the vertical or even horizontal, without departing from the present invention, the terms "horizontal", "vertical", "lower" or even "upper" will then have to be adapted to the inclination of the unwinding plane of said roller shutter 2.

With reference to the figure 1 , the final slat 4 comprises a movable abutment device 1 according to the invention at each of its longitudinal ends, each abutment device 1 being inserted at least partially into an internal housing 41 (Cf. figure 5 ) of said final slat 4 in a direction parallel to the longitudinal axis of the latter.

With reference to figures 2 to 7 , each mobile abutment device 1 according to the invention comprises a lever 10 in the overall shape of an L pivotally mounted, advantageously on a support 20, about a horizontal axis 11 perpendicular to the longitudinal axis of the housing 41 of the final slat 4 (see figure 3 And 5 ), when said abutment device 1 is inserted into it. Thus, said lever 10 comprises a first generally horizontal wing 12, a second wing 13 coming from one of the ends of said first wing 12 and extending downwards substantially perpendicular to the latter, and a protrusion 14 integral with the free end of said second wing 13 and advantageously extending on either side of the latter in a direction parallel to the pivot axis 11 of the lever 10. The lever 10 is pivotally mounted on the support 20 around the axis 11 at the free end of its first wing 12, so that a pivoting of the lever 10 around the axis 11 causes a movement of the protrusion 14 from bottom to top or vice versa. It is understood that this movement of the protrusion 14 from bottom to top or vice versa would be impossible, if said lever 10 pivoted around an axis parallel to the longitudinal axis of the housing 41 of the final slat 4, as is the case in certain state-of-the-art devices.

The term "globally horizontal" and "substantially perpendicular" denotes elements or parts of elements respectively making an angle of 0° +/-20° with respect to the horizontal and an angle of 90° +/-20° with respect to relation to elements or parts of elements.

• une position "basse" dans laquelle l'excroissance 14 dépasse avantageusement du bord longitudinal inférieur de la lame finale 4 (Cf. figure 7) permettant, lorsque le volet roulant 2 est totalement ouvert, un effacement total de ladite lame finale 4 et donc une luminosité maximale à l'intérieur de la pièce équipée dudit volet roulant 2, et
• une position "haute" dans laquelle l'excroissance 14 ne dépasse avantageusement pas du bord longitudinal inférieur de ladite lame finale 4 (Cf. figure 5) permettant, lorsque le volet roulant 2 est totalement fermé, une occultation totale de la fenêtre associée et donc une obscurité maximale à l'intérieur de la pièce équipée dudit volet roulant 2, ladite excroissance 14 étant à l'extérieur de la lame finale 4 et se déplaçant à l'intérieur de la coulisse de guidage 5 associée.

Said abutment device 1 is configured so that, when it is inserted into the housing 41 of the final slat 4, the lever 10 pivots around the axis 11 between:

• a "low" position in which the protrusion 14 advantageously protrudes from the lower longitudinal edge of the final slat 4 (Cf. figure 7 ) allowing, when the roller shutter 2 is completely open, total obliteration of said final slat 4 and therefore maximum brightness inside the room equipped with said roller shutter 2, and
• a "high" position in which the protrusion 14 advantageously does not protrude from the lower longitudinal edge of said final slat 4 (Cf. figure 5 ) allowing, when the roller shutter 2 is completely closed, total concealment of the associated window and therefore maximum darkness inside the room equipped with said roller shutter 2, said protrusion 14 being outside the final slat 4 and moving inside the associated guide slide 5.

For this, the lever 10 comprises at least one stop capable of coming to bear against the internal wall of the housing 41 of the said final slat 4, when the said lever 10 is in the "down" position (Cf. figure 7 ). The lever 10 advantageously comprises two stops 15,16 arranged, diagonally opposite, respectively along the lower and upper edge of the first wing 12. With this configuration, the forces and mechanical stresses are not taken up by the pivot axis 11, but by the stops 15,16 of the lever 10 which come to rest on the internal wall of the housing 41 of said final slat 4, which is conventionally made of aluminium.

With reference to figures 3 and 4 , according to an advantageous embodiment, said support 20 comprises two parts 21, 22 assembled together by means in particular of two pins 23. Thus, the support 20 consists of a first part 21 of the support 20 having a recess 24 so that its cross section is in the overall shape of a C, and of a second part 22 of the support 20 being an assembled plate bearing against said first part 21 so as to close the recess 24. With this advantageous configuration, the lever 10 is partly disposed inside the support 20 in the recess 24, the latter being dimensioned to allow the pivoting of the lever 10 around the axis 11 between its "low" position and its "high" position or vice versa.

Furthermore, the first part 21 of the support 20 comprises cutouts 25,26 to allow, when said lever 10 is in the "down" position, the passage of the stops 15,16 and their support against the internal wall of the housing 41 of said blade final 4.

The support 20 of the abutment device 1 further comprises return means tending to return the lever 10 to its "high" position. These return means are advantageously a flexible tab 27 elastically integral with the first part 21 of said support 20. These return means allow good sliding of the final slat 4 in the guide slides 5, because, when each lever 10 is in its "high" position, the first wing 12 of the latter is substantially horizontal and the associated protrusion 14 is then perfectly centered with respect to the associated guide slide 5 and slides easily in the latter (Cf. figure 5 ). On the other hand, when each lever 10 is in its "down" position, the first wing 12 of the latter is slightly inclined and the associated protrusion 14 is shifted towards the middle of the final blade 4 due to the pivoting of the lever 10 around of its axis 11et is then no longer perfectly centered with respect to the associated guide slide 5, the sliding of said protrusion 14 is then no longer optimal (Cf. figure 7 ).

The person skilled in the art will have no difficulty in sizing the lever 10 in order to limit this phenomenon of shifting of the protrusion 14 towards the middle of the final slat 4, by extending the first wing 12 of the latter so as to move the position of axis 11 to enlarge the radius of pivoting of said lever 10.

With reference to figures 5 to 7 , the stop device 1 according to the invention allows the following operation of the roller shutter 2.

So, with reference to the figure 5 , when the roller shutter 2 is closed, the lever 10 is held in the "high" position by the return means of the support 20, the associated protrusion 14 does not protrude from the lower longitudinal edge of said final slat 4, the latter being perfectly resting on the lower edge of the window or of the civil engineering surrounding the latter so as to completely obscure said window to obtain maximum darkness inside the room equipped with said roller shutter 2. However, it will be noted that in the absence of return means, the lever 10 would naturally return to its "high" position via the associated protrusion 14 resting on the lower edge of the window or of the civil engineering surrounding the latter.

When the roller shutter 2 begins to open, the lever 10 is held in the "high" position by the return means of the support 20, the protrusion 14 is perfectly centered in the guide slide 5 and the roller shutter 2 continues to open normally.

Finally, with reference to figures 6 and 7 , when the roller shutter 2 is almost completely open, the protrusion 14 of the stop device 1 comes into contact with the underside of the guide element 6 of the associated guide slide 5, the lever 10 then begins to pivot around its axis 11 (Cf. figure 6 ), the roller shutter 2 then continues to open until said lever 10 comes into its "down" position (Cf. figure 7 ), the roller shutter 2 stops because the lever 10 is blocked in particular by its stop(s) 15,16 resting against the internal wall of the housing 41 of its final slat 4. In this position, the final slat 4 has gone beyond the underside of the guide element 6 of the associated guide slide 5, and then guarantees maximum opening of said roller shutter 2 to obtain maximum brightness inside the room equipped with the latter .

When the roller shutter 2 closes, the lever 10 of the stop device 1 is returned to the "up" position by the return means of the support 20, the protrusion 14 is then perfectly centered in the guide slide 5 so as not to interfere the movement of said rolling shutter 2.

It is well understood that the abutment device 1 according to the invention is particularly interesting, because it is not necessary to modify the guide slide 5 and/or the associated guide element 6 to obtain maximum opening of said roller shutter 2 and maximum brightness inside the room equipped with said roller shutter 2.

The stop device 1 of a rolling shutter or the like according to the invention finds a particular application for equipping a window of a building or a dwelling house.

Finally, it goes without saying that the examples of abutment device 1 in accordance with the invention which have just been described are only specific illustrations, in no way limiting the invention.

Claims (9)

1. An abutment device (1) for a roller shutter (2), said roller shutter (2) including two guiderails (5) provided, at the upper end thereof, with a guide element (6) and an apron (3) formed of a plurality of horizontal slats, including a lower final slat (4) provided, at each of the lateral ends thereof, with an inner housing (41), which are hinged to each other and whose lateral ends are displaced vertically inside said guiderails (5), where said abutment device (1) is configured to be inserted at least partly in each inner housing (41) in a direction parallel to the longitudinal axis of the latter and includes a lever (10) pivoting, when the abutment device (1) is inserted, about a horizontal axis (11) perpendicular to the longitudinal axis of said housing (41), and including at least one protrusion (14) which, when the abutment device (1) is inserted, is displaced inside the associated guiderail (5) and is capable of abutting against the guide element (6) to block the final slat (4) when the roller shutter (2) is raised, the lever (10) pivoting between a "low" position in which the protrusion (14) protrudes from the lower longitudinal edge of said final slat (4) allowing the total erasure of said final slat (4) when said roller shutter (2) is totally open, and a "high" position in which the protrusion (14) does not protrude from said lower longitudinal edge allowing a total occultation when said roller shutter (2) is completely closed.
2. The abutment device (1) according to claim 1, characterised in that each lever (10) comprises at least one abutment capable of abutting against the inner wall of the housing (41) of said final slat (4), when said lever (10) is in the "low" position.
3. The abutment device (1) according to any one of claims 1 or 2, characterised in that each lever (10) is generally L-shaped and comprises a first generally horizontal wing (12) and a second wing (13) originating from one of the ends of said first wing (12) and extending downwards substantially perpendicular to the latter, said lever (10) pivoting at the free end of the first wing (12) thereof and said protrusion (14) being secured to the free end of said second wing (13) and extending across the latter in a direction parallel to the pivot axis (11) of the lever (10).
4. The abutment device (1) according to claim 3, characterised in that each lever (10) comprises two abutments (15, 16) which are disposed, diagonally opposite, respectively along the lower and upper edges of the first wing (12) thereof.
5. The abutment device (1) according to any one of claims 1 to 4, characterised in that it includes a support (20) on which each lever (10) is pivotally mounted.
6. The abutment device (1) according to claim 5, characterised in that each support (20) includes return means tending to return the lever (10) to its "high" position.
7. The abutment device (1) according to any one of claims 5 or 6, characterised in that each support (20) consists of a first portion (21) having a recess (24) such that the cross section thereof is generally C-shaped, and a second portion (21) being a plate which is bearingly secured against said first portion (21) so as to close the recess (24), the lever (10) being partially disposed inside the support (20) in said recess (24).
8. The abutment device (1) according to claims 2 and 7, characterised in that the first portion (21) of the support (20) includes cutouts (25, 26) to allow the passage of the abutment(s) (15, 16) when said lever (10) is in the "low" position.
9. The abutment device (1) according to claim 6 and any one of claims 7 or 8, characterised in that the return means are a flexible tab (27) which is elastically secured to the first portion (21) of said support (20).

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