ES2319004B1 - REVERSIBLE PERSIAN. - Google Patents

Abstract

Reversible blind

From the basic structure of a blind conventional, in which two lateral and vertical guides participate (2), the invention consists in bifurcating these primitive guides to upper end level defining second guides or paths of tread (4) inclined downwards and outwards, which close on the corresponding primitive guides through a lower loop (5) of semi-elliptical path, so that when  manually the blind is turned towards these rolling paths (4), by adequate elongation of both the tape drive like the belts that relate the blind to the axis, said blind is capable of exceeding the loop (5) and ascend through the primitive guides (2) to a limit position in the one that the blind shows towards the interior of the cabin which normally it is your outer face, thus facilitating the cleaning of it.

Description

Reversible blind

The present invention relates to a blind, of the type that incorporates a plurality of slats, duly articulated with each other, likely to roll on an axis located at the upper end of the hole corresponding to the Door or window in question, shaft fitted with a pulley throwing operable by means of a tape, cable or cord with the contest of the corresponding collector, and in which said slats are movable on direct associated lateral guides or indirectly to the vertical uprights of the door frame or window.

The object of the invention is to achieve that the proper blind, that is the set of slats that the constitute, can reverse the orientation of the user of their faces, that is to say that their external face can pass in a certain moment to be your inner face or vice versa, in order to facilitate cleaning from inside the cabin.

Background of the invention

As just said, the blinds slat-based rollers are capable of integrally closing the hollow of a door or window moving vertically over two lateral and also vertical guides, curling up and unwinding from a shaft or drum located in the upper area, by a pulley driven through a belt, cable or cord, from a collector usually embedded in the wall at a level in adequate height, although there are also blinds that lack  said pulley and incorporating an electric drive motor assisted by career ends and their corresponding double button.

When it comes to windows, the usual thing is that these are not accessible from the outside, because of the height of those of them, so that the shutter on its outer face, making cleaning impossible of the same from the interior of the cabin, making precise the use of scaffolding or other means of support that allow to work on the facades for said cleaning of the Blinds.

An alternative solution is to open the drawer of the blind and clean it inside the drawer, as it is rolled or unrolled, but this operation is very complicated, it is not feasible for most users, it requires the contest of two people, and in addition there is a high risk of longitudinal displacement of the slats inside the drawer, which causes problems to exit them towards the lateral guides.
rales.

Description of the invention

The reversible blind proposed by the invention solves the problem fully satisfactorily previously exposed, since thanks to said reversible character and as previously stated it can show inside the interchangeably your inner face or your outer face, to criterion of the person who is manipulating it.

To do this and more specifically, from the basic structuring of a conventional and agreed blind already with the invention, the classic lateral guides forks in their upper extreme zone, so that in addition to the guide primitive and perfectly vertical a second guide is established tilted down and out that closes again with primitive guidance through a semi-elliptical path loop in which a swivel wheel mounted with freedom of turn, and a roller that assists it.

According to this structuring the blind, during its descent, it is able to take the inclined guides, in advances called "rolling road", orienting manual and duly the corresponding slat, and after reaching the loop lower and reverse your downward trajectory that happens to be ascending, through the primitive guides, with which the blind shows inside what was once its outer face.

To achieve this effect it is necessary that the upper end blade is related to the winding axis a through pieces of tape or similar of sufficient length as to allow doubling the path of the blind itself said, tapes that are normally thrown in profile grooves trapezoid operatively practiced in said axis, and must obviously extend the length of the tape accordingly, cable or cord that through the pulley and with the complementary collector, acts on the winding axis of the blind.

Logically the upward displacement of the shutter cannot be produced by simple gravity, being able to be done manually or with the collaboration of an engine electric.

This manual and ascending scrolling can be carried out simply by pulling the lower end of the shutter and hooking the terminal strip to any fixed support to the wall, or it can be carried out through a system of pulleys that facilitate said manual maneuver, however being able to any other equivalent solution be used.

       \ newpage
    

Finally and according to another of the characteristics of the invention, the slats constituting the blinds must present a suitable profile so that they can easily swing in one direction when they roll over the shaft superior, and in the opposite direction when they pass through the loop Bottom of the guides.

Description of the drawings

To complement the description that is being performing and in order to help a better understanding of the characteristics of the invention, according to a preferred example of practical realization of it, is accompanied as part member of that description, a set of drawings where with illustrative and non-limiting nature, what has been represented next:

Figure 1.- Shows an elevation view front of a window provided with a reversible blind made in accordance with the object of the present invention, wherein said shutter appears in intermediate opening situation.

Figure 2.- Shows a sectional profile of the set represented in the previous figure, according to the cut line A-A of said figure.

Figure 3.- Shows a detail in section transverse according to the B-B cutting line of Figure 1

Figure 4.- Shows a detail in section transverse according to the C-C cutting line of Figure 2

Figure 5.- Shows another cross section, now according to the D-D cutting line of the figure 2.

Figure 6.- Shows a detail in section diametral of the roller winding axis in the event that This one is made of wood.

Figure 7.- Shows a similar representation to that of the previous figure in the event that the axis of winding be metallic.

Figure 8.- Shows an elevation view front similar to figure 1, but in which the blind proper adopts the inverted position planned for its cleaning and is fixed to the complementary support.

Figure 9.- Shows a detail in profile and in section of the assembly represented in the previous figure, according to the E-E cutting line.

Figure 10.- Shows an enlarged detail and in perspective of the support corresponding to the detail of the figure previous.

Figure 11.- Shows, according to a representation front elevation schematic, a solution for lifting the blind to the cleaning position for it.

Preferred Embodiment of the Invention

In view of the figures outlined, and in special figures 1 and 2, can be seen as the blind (1) that the invention proposes, structured as conventional to from a plurality of lamas articulated together but with the possibility of winding both in one and the other sense, focuses its characteristics on the fact that the classic lateral guides (2), vertical, extending from the drawer (3) from the blind to the windowsill (27) of the window, present in correspondence with its upper limb a fork tilted down or forward, determinant of a second guide or raceway (4), which at the lower end level is close with the primitive guide (2) through a loop (5) of semi-elliptical trajectory, as previously said, participating in this loop a wheel (6) mounted freely of rotation, of curvature coinciding with that of said loop (5), and immediately above said wheel (6) a roller (7) that also collaborates in the guidance of the blind itself (one).

Under normal conditions of use of the blind it rises and falls vertically through the lateral guides (2), that like the raceways (4) can be embedded in the wall or simply adapted and fixed to the same, while when it is intended to clean the shutter (1) is forced to the lower end of it to take the raceways (4) until you reach the bottom loop (5), when it is necessary to perform manually or with the collaboration of an auxiliary engine, the rise of it by the primitive guides (2).

Within a wide range of possibilities of manual operation, in any case a system of hitch, as shown in figures 8 to 10, consisting of a support (8) that is fixed to the base of the drawer (3), support (8) that it has a top hitch (9) provided with a slot (10) in the one that penetrates a stud (11) threaded to the lower end of the blind (which is now the upper one), counting said support with an oscillating trigger (12) that retains the aforementioned pin (11) and consequently to the blind (1) as a whole.

This manual ascent maneuver of the blind to along the primitive guides (2), it can be done directly pulling the corresponding end of the blind (1), or can be carried out, in an easier way, with the collaboration of a cord (13) which, as shown in Figure 11, is finished off by one of its ends in a hook (14) fixing to the frame (15) of the window passes through a pair of side sheaves (16), or of a single and centered sheave (16 '), which is fixed by hooks to the lower end lama repeatedly cited, passing said cord finally by a roller of greater diameter (17) mounted on a support (18) conveniently fixed to one of the sides of the window opening, so that for lifting manual blind is pulled from the end (19) of said cord (13), although and as previously mentioned the cord (13) can be fixed to the pulley of a motor reducer electric that replaces the larger diameter sheave (17).

As follows from the above, for the blind (1) to adopt the cleaning position it is necessary that the uppermost lama of the same be located in the vicinity of the sill (4) of the blind, forcing replace the blind fixing system to the axis of winding it and making modifications on its own axis.

More specifically, it is necessary that the axis winding has at least one pair of throats (21), as shown in figures 6 and 7, where paths can be rolled tapes (22) of sufficient length to allow this accused distancing between the uppermost slat of the blind and the own shaft

When the winding shaft (20) is of wood, the throats (21) are obtained by removing material therein, as shown in figure 6, while when the winding shaft (20 ') is metallic and for the obtaining the corresponding throats (21), it is necessary conveniently key to said winding shaft (20 ') metallic tubular segments of larger diameter (23) fixed to the shaft of winding itself (20 ') by flat washers and extreme (24) and intermediate and conical washers (25) that configure the aforementioned throats (21) for winding of the tape (22).

At the same time it is also necessary substantially increase the length of the classic tape winding on the complementary collector, not represented in the drawings, which acts on the classic pulley (26) in solidarity with one of the ends of the winding axis of wood or metallic (20 or 20 '), to supply the same necessary rotating movement during the lifting and lowering of the  blind.

Obviously and since when the descending blind movement due to gravitational effect there is no possibility to continue releasing the pickup tape, since that it would automatically tend to roll back into said collector, prior to the manual lifting maneuver of the shutter for cleaning, it is necessary to remove all the tape of the collector and block it by some appropriate means, as per example mounting on it a clamp that prevents its entry into catcher.

Claims (10)

1. Reversible blind, of the type of those that are roll-up on an axis housed in the complementary drawer, by means of a belt, cable or cord that relates a pulley of said axis with the complementary pick-up, and of the type of which the blind proper it moves on vertical guides established on the sides of the window, characterized in that said lateral guides branch at its lower end so that each primitive and vertical guide (2) is complemented by a second guide or raceway (4) , inclined downwards and outwards, which closes on the primitive guide through a loop (5) of semi-elliptical trajectory, all in such a way that the blind (1) normally moves on the primitive guides, but is capable of reversing its position by manually deflecting it during the descent to the raceways to ascend later through the primitive guide, so that what was its outer face passes to be its internal face, with hooking means that stabilize it in such position. 2. Reversible blind, according to claim 1, characterized in that in the lower loop (5) that relates each primitive guide (2) with the complementary raceway (4), a rotating wheel (6) and a roller (7) are mounted. with freedom of rotation on respective axes. 3. Reversible blind, according to previous claims, characterized in that the assembly constituted by each primitive guide (2) its complementary raceway (4) and the constituent elements of the loop (5), are capable of being embedded in the side walls of the window or overlapping said walls. 4. Reversible blind, according to previous claims, characterized in that the hooking means for the blind in the inverted position consist of a support (8) of angular profile, fixable through its horizontal branch to the base of the drawer (3) of the blind , provided in its vertical branch with a groove (10) in which a pin (11) fixed by means of thread or by any other means is able to penetrate the lower end of the blind (1), and also having said support with an oscillating trigger (12) that tends to lock said pin (11) when the latter penetrates the groove (10) of the support, after the manual or motorized lifting of the blind along the primitive guides (2). 5. Reversible blind, according to previous claims, characterized in that for manual lifting of the blind it has a cord (13) topped by one of its ends in a hook (14) fixing to the frame (15) of the window, cord assisted by a single and centered sheave (16 ') or a pair of sheaves (16) that are coupled by hooks to the lower end slat of the blind, said cord passing through a sheave of greater diameter (17) than through a support (18) is fixed to the other side of the frame (15) for manual traction on said cord through the free end thereof. 6. Reversible blind, according to previous claims, characterized in that the belt, cord or cable that extends between the pulley (26) of the winding axis of the blind and the complementary collector, is oversized in length to a suitable extent to allow the accused distance between the upper louver of the blind (1) and the winding axis, when said first louver is located in the lower area of the window and the blind adopts an inverted position. 7. Reversible blind, according to previous claims, characterized in that the winding axis, either of wood or metal (20 or 20 '), incorporates at least one pair of perimeter throats (21), in correspondence with the fixing points of the blind to the axis, which allow the winding of long belts that relate blind and axis of winding, and which in turn allow the aforementioned distance between the upper slat of the blind and the axis of winding thereof. 8. Reversible blind, according to claim 7a, characterized in that when the axis (20) is made of wood, said throats (21) are obtained by recessing material of said axis. 9. Reversible blind, according to claim 7a, characterized in that when the shaft (20 ') is metallic on it, complementary shafts (23) of larger diameter are established, mounted on the shaft (20') through washers (24-25 ), of which the conical washers (25) define the annular throats (21 ') for winding the belt that relates the axis (20') with the upper end of the blind (1). 10. Reversible blind, according to previous claims, characterized in that the slats constituting the blind itself (1) are interrelated and adopt a suitable profile to allow its winding both in one way or another.