ES2285073T3 - SOFITO FIXING DEVICE IN A TUNNEL CABON OF ROLLING BLIND. - Google Patents

Abstract

Tunnel roller shutter drawer of U-shaped structure whose side ends (4) are closed by support plates (7), said drawer (3) comprising a soffit (2) and a fixing device (1) to fix said soffit (2) to the drawer (3), characterized in that said fixing device (1) comprises at least one slider (8) movably mounted axially on each of the lateral ends (10) of said soffit (2) so capable adopt: - an unlocked position, not protruding from the corresponding side edge (11) of the soffit (2); - and a locking position in which it extends, in part, above the inner face (9) of this soffit (2) and is projected with respect to the corresponding lateral edge (11) of the latter to be inserted into a housing that It forms a lock (12) that the support plates (7) have, on the internal side (13) of the drawer, these housings (12) completing said fixing device (1).

Description

Soffit fixing device in a drawer roller shutter tunnel.

The invention relates to a tunnel drawer of roller blind with a U-shaped structure whose lateral ends are closed by support plates, behaving said drawer a soffit and a fixing device for fixing said sofito to the drawer.

The present invention relates to the scope of roller blinds and concerns, in particular, drawers provided capable of integrating the winding mechanism of the such roller shutter board.

It is known to integrate in the masonry of a work, above an opening destined to conceive a door, window or similar, prefabricated tunnel drawers, made of polystyrene or more generally of wood and cement wool provided capable of subsequently receive the entire winding mechanism of the board of a roller blind.

Such tunnel drawers are closed, in their lateral ends, by support plates to which they are precisely able to be fixed the elements of this mechanism Roll up roller shutter board. At the level of its lower face, this tunnel drawer involves extreme parts closed, forming support bases, and allowing you to rely on the masonry, above the opening intended to accommodate, subsequently, a carpentry of type door, window or Similary.

It is understood that, under such conditions, access the inner volume of this drawer is effected through the portion left open of its lower face. Obviously and after the placement of the winding mechanism of the board roller blind, this opening in the bottom side of the drawer It is closed by what is usually called a soffit.

The latter preserves, necessarily, on the side internal or external, depending on the case, of the drawer, a slot for the board step

As usual, this soffit is defined by a flat profile of plastic or metal material, of which a song, opposite the slot, it is intended to be inserted into a slot of tight section and that the tunnel drawer behaves precisely in the lower edge of the outer and / or inner side. On the other hand, fixing screws cross its ends, to stay in solidarity pins of the support bases to which It is referred to above.

The problem is that it does not always dominate the length between the openings of a door or window with respect to the which should be strictly adjusted soffit. In particular, when this soffit is placed before the application of the mortar coating that usually receives the walls of a work, a Once applied, it can be wrapped by this mortar and sideburns fixation of the support bases mentioned above. Then no can be disassembled and access to the drive mechanism of the shutter board is no longer possible.

In fact, in this case it is necessary to break slightly be the mortar, be the sofito, to be able to access New to this mechanism.

From document FR-2,419,387, You also know a U-shaped tunnel drawer for blinds roller, closed at the level of its lateral ends by support plates that have, at their bottom edge, a light horizontal in which it is able to slide the fixing pin. Consequently, the latter slides transversely to the axis of the sofito, which does not allow solving the problem.

Indeed, the presence of the pin of fixing, which cannot be released from this light by displacement axial with respect to the soffit, does not allow, during disassembly, to be pushed into the drawer to present this soffit inclined and facilitate its release.

The problem is identical in the design framework described in the document EP-A-0.628.695. Yes well before the placement of the soffit, the fixing pins are, here, liable to be inserted by sliding in housings adapted to the level of the support plates, once this soffit supported by said fixing pins, these are perfectly immobilized and it is not possible to free them from these accommodations by axial sliding with a view to pushing said soffit towards the inside the drawer. Therefore, here too, this soffit It can be wrapped by these fixing pins and an excess thickness of coating mortar.

To that it should be added that the placement of fixing screws is an annoying operation, since it requires soffit drilling, in addition to that, since the placement of these screws are made from the bottom up, it is very often several screws fall to the ground before one insert in the thickness of the fixing pins.

In addition, the latter often only present a relative resistance Therefore, it turns out more and more frequent stop the drive motor of a roller shutter motorized, controlling its torque. In short, when, in the phase of curl, the stops of which the final sheet is provided of the roller shutter board come in support against the sofito, a brutal increase in the torque produced by the engine is detected which causes the latter to stop functioning.

However, before the very stop of this engine, the tops of the final board sheet exert pressure not negligible about soffit, resulting in request, strongly, the fixing pins, until causing their breakage, in some cases. On the other hand, this support shot of the bumpers of final sheet intervenes on this soffit at the edge of the groove, be out of date with respect to the support pins that are usually implanted, at the level of the support plates, substantially in the medium plane of the drawer. Therefore this Sofito himself is requested during this stop command engine.

Finally, the present invention has for aim to propose a solution for all problems cited above.

Thus, the invention relates to a tunnel drawer of U-shaped structure roller shutter whose lateral ends are closed by support plates, comprising said drawer a soffit and a fixing device for fixing said sofito to the drawer, characterized in that said fixing device It has at least one axially mounted sliding slide in each one of the side ends of said soffit so capable of adopt:

- an unlocked position, not outgoing with respect to the corresponding lateral edge of the soffit;

- and a locked position in which extends, in part, over the inner face of this soffit and it It has a projection with respect to the corresponding lateral edge last to be inserted in a housing that forms a locksmith that the support plates behave, on the inner side of the drawer, these housings completing said fixing device.

Thus, in the case that the soffit was blocked by the coating mortar in the exposed conditions more above, it would suffice, once the slides carried in a position of unlocking, not protruding from the side edges of this sofito, lift it aside by pushing it into the drawer and by tilting it, to free it from the opposite side with respect to this mortar that blocks it and finally remove it from said drawer.

In fact, this manipulation was not possible to through the solidarity fixing pins of the bases of support, since this soffit could not be pushed inwards of this drawer.

According to one embodiment, the soffit comes mounted by screwing on the slides, once you are last carried in their locked position, inserted in the accommodation that forms a locksmith.

According to another embodiment, the slides they are mounted, axially movable, on the inner face of a soffit.

According to another feature of the invention, the slides involve manipulation means to push them in lock position, or conversely, unlock, provided accessible from inside the drawer.

Advantageously, this fixing device it involves means of mounting a slide by pressure on the edge soffit front, side of the groove side of the board The roller blind.

Other objects and advantages of this invention will appear during the description that follows and that refers to an embodiment given by way of example indicative and not limiting.

The understanding of this description will be provided with reference to the attached drawings, in which:

Figure 1 is a schematic representation and in perspective of a tunnel drawer.

Figure 2 is a schematic representation and broken down from the support plate, soffit and device assembly fixing according to the invention.

Figure 3 is a schematic representation partial and in section of a tunnel drawer of which one end is supported in carpentry through a support base associated with a support plate that closes this drawer at one side end, illustrating this representation also a fixing device of sofito according to the invention.

Figure 4 is a detail view of the figure 3 illustrating in particular the fixing device according to the invention.

Figures 5 and 6 correspond to schematic and perspective representations of a second way of realization of sliding.

Figure 7 schematically represents a support plate on which a cover can be mounted by pressure of protection that closes the housings that form locksmith and intended to receive a sliding device lock fixing according to the invention.

As visible in the figures of the drawings Attached, the present invention relates to the scope of roller blinds and concerns, in particular, a device for fixing 1 of a soffit 2 to a tunnel drawer 3 of blind roller.

This drawer 3 is intended to be integrated into the carpentry of a work and, as visible in figure 3, is supports at the level of its ends 4 and through a support base 5 in the top of a bay 6 corresponding to a door, window or similar.

Thus, this drawer 3 of structure in the form of "U" is closed at its lateral ends 4 by plates brackets 7, to which it is intended to be fixed the roller shutter mechanism roller.

In particular, the fixing device 1, object of the present invention, it comprises at least one slide 8 axially movable mounted on each of the lateral ends 10 of said sofito 2, to be able to adopt a blocking position and a unlock position. In the locked position, illustrated in the Figures 3 and 4, this slide 8 extends, in part, above the internal side 9 of this soffit 2 and is outgoing with respect to the corresponding lateral edge 11 of the latter, in order to be inserted into a housing that forms a lock 12 and that carries, on the inner side 13 of the drawer 3, support plates 7. In the position unlocked, this slide 8 does not protrude from this edge side 11 of the soffit 2.

According to a first embodiment, no represented, a housing that forms a lock 12 is defined as dimensions adjusted to receive a slide 8.

According to another embodiment corresponding to Figures 2, 3 and 4, these housings that form locksmith 12 are defined by a ladder 14 that extends transversely to along the bottom edge 15 of the support plate 7, in a plane substantially parallel to the latter. With the steps of this ladder 14 is provided capable of cooperating the end 16 of a Slider 8, set in the form of a comb.

Thus, to the extent that such slides are not definitely in solidarity with the support plates 7, they can be removed from the latter, therefore of said accommodations that form locksmith 12, if this were necessary for the disassembly of the sofito 2.

It will be noted that these slides 8 can be mounted directly, axially movable, on this inner face 9 of a soffit 2, just like the latter can be mounted by screwed on these slides 8, once these last ones carried in its locked position, that is inserted into the housings forming a locksmith 12.

According to a preferred mode of execution, the slides 8 also include manipulation means for push them in the locked or, conversely, unlocked position, provided accessible from outside the drawer 3.

For this purpose and advantageously, this fixing device 1 includes mounting means 17 of a slide 8 by pressure on the front edge 18 of soffit 2, of the side of the groove board step groove roller.

In short, thanks to these mounting means by pressure 17 on the front edge 18 of soffit 2, the latter, for placement, it can, first of all, be inserted by its edge rear 19, opposite the board slot, in a slot 20 defined, on the inner side of the drawer, on the bottom edge 21 of the outer walls 22 and / or inner 23 of the tunnel drawer 3. Then, acting on the manipulation means that define said means of pressure assembly 17, that is by sliding along the front edge 18 of soffit 2, it is possible to cause insertion of the slides 8 in the housings that form locksmith 12. In summary, through this mode of execution, no longer It is necessary to place fasteners such as screws.

These pressure mounting means are defined by a hook 17 that includes connection means 17A to a  slide 8, as well as a hooked elbow 17B provided capable of engage in the front edge 18 of soffit 2.

Advantageously, such hook 17 is defined as elastic type in a direction transverse to soffit 2. Thus, before of the insertion of a slide 8 in a housing that forms strike 12, said hook 17 is elastically low tension, so that, after blocking, exert a push on the sofito 2, in the direction of its rear edge 19, in the groove 20.

While the above mentioned solution corresponds more to the embodiment of figures 2, 3 and 4, this  hook 17 can also, through its connection means 17A, be conceived adjustable with respect to a slide 8, in a direction perpendicular to the axis of displacement of the latter.

For this purpose, we will refer to the figures 5 and 6 where it is seen that said connection means 17A are defined, at the level of a slide 8, by at least one transverse light 17C in which is able to insert a latch tongue 17D that The hook 17 behaves. This 17D tab is provided with a series of teeth that form redundant, intended to oppose the retraction of said hook 17 with respect to the slide 8, once said tab inserted, according to a desired length, in a light transverse 17C.

So, once the back edge of soffit 2 inserted in the groove 20 at the bottom edge 21 of the wall external 22 or internal 23 of tunnel drawer 3 and slides 8 taken in cooperation with the housings that form locksmith 12, the hooking elbow 17B of the hook 17 is pushed over the edge front 18 of soffit 2, to ensure the maintenance of this last in said slot 20.

The slides 8 can be presented in the form of profile pieces of plastic or metal material, so that your rigidity can be chosen based on the mechanical stresses that They are applied. As for the support plates 7 at which are the accommodations that form locksmith 12, these they are preferably conceived of injected plastic material. Therefore, as shown in Figure 4, these plates supports 7 may, if necessary, receive reinforcement means 24 of these housings that form locksmith 12.

In particular, above the latter, said support plates 7 include means for receiving means of reinforcement 24 constituted by a reinforcement plate, in particular metallic, able to withstand the pressures that are printed by the slide 8 and, therefore, the soffit 2, whose pressures they correspond, for example, to the arrival at high limit, on this sofito 2, of the final sheet of the blind board roller.

Advantageously also and as it comes depicted in figure 7, a protective cap 25 is liable to temporarily close the housings that form strike 12 of a support plate 7 before placing a sofito 2, so that splashes are avoided, in particular mortar, inside these housings 12.

Finally and as we have explained more above in the description, soffit 2 can, through the characteristics of the present invention, be pushed into the drawer 3 while the slides 8 are in the unlocked position. Yes it is well possible to use this particularity in the case of blocking of this soffit 2, for example by the coating mortar, It has also been thought to take advantage of this advantage to avoid having to adjust the length of the latter to an often variable data that constitutes the distance between the openings 6 of a door or window.

In particular, this soffit 2 is advantageously adjusted in length with respect to the distance between the bases of support 5, which are prolonged by a covering tape 26 intended to extend under the side edges 27, on the outer face 28, of said soffit 2. Finally, you are covering tapes 26 can compensate for variations that is possible to find at the level of the distance between the openings 6 of a door or window

Thus, for the placement of a soffit 2, this one it is inserted, at the level of one of its ends, in drawer 3. Then, the other end is inserted, to take it behind the tape covering 26 of the support base 5 on the corresponding side of drawer 3. Also, the first end is dropped on the belt covering 26 of the support base 5, on the other side of the drawer 3. In a last operation, the slides 8 are blocked.

Or the slides 8 are mounted in solidarity on the inner face 9, on the lateral ends 10 of the soffit 2 and In this phase, it is kept perfectly in position, or they are independent of this sofito 2 and it is necessary to fix the latter to these slides by screws, for example.

In this way, you get not only a better finish, but also improves the tightness of the drawer between this sofito 2 and these support bases 5.

It is clear from the description that precedes that the present invention represents an evident progress in the field considered.

Claims (14)

1. Roller shutter tunnel drawer with a "U" structure whose side ends (4) are closed by support plates (7), said drawer (3) comprising a soffit (2) and a fixing device (1) for fixing said soffit (2) to the drawer (3), characterized in that said fixing device (1) comprises at least one slider (8) mounted axially movable on each of the lateral ends (10) of said soffit (2) so able to adopt: - an unlocked position, not outgoing with respect to the corresponding lateral edge (11) of the soffit (2); - and a locked position in which extends, in part, over the inner face (9) of this soffit (2) and there is a projection with respect to the corresponding lateral edge (11) of the latter to be inserted into a housing that forms strike (12) that the support plates (7) have, on the side internal (13) of the drawer, completing these housings (12) said fixing device (1). 2. Roller shutter tunnel drawer according to claim 1, characterized in that the soffit (2) is provided to be mounted on a wall by screwing in the slides (8), once the latter are carried in their locked position, inserted into the housings that form locksmith (12). 3. Roller shutter tunnel drawer according to claim 1, characterized in that the slides (8) are mounted, axially movable, on the inner face (9) of a soffit (2). 4. Roller shutter tunnel drawer according to any of the preceding claims, characterized in that a housing that forms a lock (12) is defined in dimension adjusted for the reception of a slide (8). 5. Roller shutter tunnel drawer according to any of the preceding claims, characterized in that the housings that form a strike (12) are defined by a ladder (14) extending transversely along the bottom edge (15) of a support plate ( 7), in a plane substantially parallel to the latter, with this ladder (14) leading to which one end (16) of a slide (8), configured in the form of a comb, is provided. 6. Roller shutter tunnel drawer according to any of the preceding claims, characterized in that the slides (8) comprise manipulation means, provided accessible from outside the drawer 3, to push them in the locked or, conversely, unlocked position. 7. Roller shutter tunnel drawer according to any of the preceding claims, characterized in that it includes mounting means (17) of one of said slides (8) by pressure on the front edge (18) of the soffit (2), on the side of the roller groove board step groove. 8. Roller shutter tunnel drawer according to claim 7, characterized in that the pressure mounting means are defined by a hook (17) which means connecting means (17A) to a slide (8) as well as a hooking elbow (17B ) provided capable of being inserted in the front edge (18) of the soffit (2). 9. Roller shutter tunnel drawer according to claim 8, characterized in that a hook (17) is defined of elastic type in a direction transverse to the soffit (2), so as to be able to be elastically put under tension, for, in locked position of the slide (8), exert a push on the soffit (2) in the direction of its rear edge 19. 10. Roller shutter tunnel drawer according to claim 8, characterized in that the connection means (17A) of the hook 17 are designed adjustable with respect to a slide (8), in a direction perpendicular to the axis of displacement of the latter. 11. Roller shutter tunnel drawer according to claim 10, characterized in that the connection means (17A) are defined, at the level of a slide (8), by at least one transverse light (17C) in which a latch tongue (17D) that the hook (17) has and which is provided with a series of teeth that form a redress, intended to oppose the retraction of the latter with respect to the slide (8) once inserted, according to a desired length , in a transverse light (17C). 12. Roller shutter tunnel drawer according to any of the preceding claims, characterized in that it includes reinforcement means (24) of the housings that form a strike (12) at the level of the support plates 7. 13. Roller shutter tunnel drawer according to any of the preceding claims, characterized in that it includes a protective cover (25) provided capable of temporarily closing the housings that form a lock (12) of a support plate (7) before placement of a soffit (2). 14. Roller shutter tunnel drawer according to any of the preceding claims, characterized in that it comprises a covering tape (26) that extends the support base (5) that a support plate (7) behaves, said covering tape (26) being provided capable of extending underneath a lateral edge (27), on the outer face (28) of the soffit (2) which is adapted in length with respect to the distance between said support bases (5) of these support plates (7).