EP2113627B1 - Mechanism for securing and activating closures with guidable and removable slats - Google Patents

Description

3. STATE OF THE ART

There are different devices for closing facade openings, being the most effective ones that are installed outside, intercepting solar radiation before it passes through the glass and penetrates inside the building, improving the energetic efficiency.

The situation outside difficult the design of the shutters especially because of the wind which requires to pay attention to the bindings.

There are louvers that are located inside an air chamber between the two panes of windows with double glazing, an intermediate solution that allows to install shutters of blades like those which are used for the interior because they are not not exposed, but whose protection is reduced compared to those which are completely external, because the air chamber of the double glazing heats up.

Fixed blade closures, even if the inclination of the blades can be varied to allow passage of air and light, always interrupt vision from the outside.

Blade shutters known as "Venetians" or "Mallorquins" carry the blades attached to a frame, like another window sill on the outside. We need another frame to fix the hinges and be able to take it on the facade to completely release the opening of the window, which sometimes is not possible. The maintenance of the outer part becomes complicated. Permanent exposure to the weather means that maintenance must be frequent. Some shutters fold upwards, like visors, without being able to remove them completely, limiting the view of the sky through the window.

The traditional shutters are gathered together, wrapping themselves on a drum located on the window in a box built in the facade. The blades move by vertical guides next to the window. The blades are taken to each other in all its length so that when the drum turns they train and go up, and as they go down they lean against each other. As they are united in all its length we can not orient them, nor clean them by the outside part. The blades have a limited width to adapt to the surface of the drum, and the dimensions of the front opening are also limited by the bending of the blades, which are very inflexible. For some dimensions it is necessary to motorize them to overcome the weight of the blades.

A rollable blind model of steerable blades has been marketed which allows the blades to tilt when the blind is fully lowered, but not in another position, and with a limited inclination angle. The winding determines the shape of the blade with the disadvantages mentioned for them.

The document FR 2 173 704 A1 (KUDELKA) October 12, 1973 , describes a closure with adjustable slats of appropriate and limited section (40cm), guided and maintained at each end in screws with variable pitch of a single thread whose pitch gives the slats a precise spacing and at the end of ascent a mini storage vertical, controlled by an electric or manual device. The tilt is done by a manually controlled screw nut system which acts on two tared traction springs that hold the slats together. The screws are surrounded by a cylindrical casing with a vertical groove through which the fastening parts of the slats to the screws. The subjection of the slats to the screws is drawn ( Fig. 3 ) as a piece, not detailed, taken at the end of the slat and in intersection with the guide section of the spiral of the screw. This intersection should produce difficulties in sliding with the change of screw pitch for storage that is not resolved. The cylindrical envelope of the screws with a vertical groove to pass the pieces taken at the ends of the slats ( Fig. 3 ) ensures subjection in the horizontal plane. In the vertical plane, the safety of the securing must be done by means of the fastening of the slats to the screws which is not defined, or by means of the tared tensile springs, which are not rigid. The slat tilting mechanism uses these springs attached to the slats on one side and the other of its longitudinal axes to rotate them about its axis, so they must be located in the space of the slats in front of the opening of the slats. facade, ie to the weather in the case of an outside closure, which reduces its durability.

The document GB 2 396 657 A (WIIKINS) June 30, 2004 , describes a blade closure that includes screws to raise and lower the blades, activated simultaneously as in the document FR 2 1 73704 A1 (KUDELKA ), but with constant pitch, without variation. One of the blades is attached to the screw by a bar that is taken to a piece (drive block 10) which is threaded to the screw like a nut, the other blades are driven by it by means of belts. This securing of the blade to the screw is firm, the other blades are not taken to the screws they do not make a safety closure, so we insert other blades taken to the screws at intervals. To be able to stack the blades in a small space the other blades taken to the screws can not be threaded like nuts, they also slip driven by the belts. To avoid the movement of the blades that are not taken to the screws in the horizontal plane is placed at its ends pieces that are inserted into guides made in the lateral carcass, similar in shape to the cylindrical envelope with a vertical groove of document FR 2 1 73 704 A1 (KUDELKA ). The inclination of the blades occurs with belts that are gripped at the ends of the blades, connecting one blade to the next. The triggering of the movement is not described.

The transmission of the vertical movement of the blades by means of the belts does not give them a position so precise that in the solution of the document FR 2 173 704 A1 (KULDELKA ) with the precise distance of the center distance. The security of the closure is not the same all along the awning, only the blades that are taken to the screws are firmly ensured. The use of belts on the outside decreases durability. The blades go down heaped on the blade which is taken by the nut (drive block 10) to the screw, so when the blind is open half the pile of blades of the open part is in the middle of the opening of facade.

The document US 2005/252086 A1 (YORGASON) November 17, 2005 is a mechanism for rotating blades for directional but not removable blade blinds. In the end of each blade 11 there is a pinion which is placed between two racks. The racks of all gears are fixed in vertical bars at intervals coincident with the locations of the blades. One of the gears rotated by a crank and pushes the racks located at its sides, so the bars move up and down with all the racks rotating the gables and tilting the blades. This mechanism makes it possible to act on the blades installed in prefixed positions, one can choose his place and the distance between them with a lot of flexibility. But it can not do it on blades that vary its position as in the case of a closing of removable blades, or the mechanism must allow the blades to move all along the opening of facade and act on them whatever his position.

PROBLEM TO SOLVE

Avoid the mentioned disadvantages of existing mechanisms.

SOLUTION

The invention solves these disadvantages by a mechanism according to claim 1 and a closure according to claim 15.

4. EXPLANATION OF THE INVENTION

A first variant according to the present invention is a mechanism for the securing and actuation of shutters of blades to put in the openings of facade (windows, doors, showcases), able to place it outside by improving the protection against the weather, especially against solar radiation. The attachment of the blades is safe enough to install on the outside, with a device that allows to use all kinds of blades, rotate them in all degrees of inclination until they touch, and remove them partially or completely from the facade opening, completely clearing the vision from the outside.

A second variant according to the present invention consists of an improvement of the first variant to obtain a better closure of orientable blades, stackable on one side or the other of the front opening, and security. This increases the utility of the invention. It is not necessary to build a box in front as with traditional shutters. The fact that one can pick up the blades at the top or bottom of a window allows, in addition to graduating the entrance of the solar radiation, to protect from the external vision allowing light to pass through the upper part. It increases the security of the closure, so it is appropriate to install it on the ground floor.

These characteristics are obtained by means of the form of securing the blade parts to the side screws, the modification of the worms to improve the packing of the blades out of the front opening, and with a new form of actuation of the inclination of the blades.

According to the first variant of the present invention, the actuating and securing mechanism of the adjustable and removable leaf shutters consists of two lateral end screws, on each side of the front opening, where the ends of the blades. By rotating the screws without rotating the devices that catch the blades, they slide through the screws, like a corkscrew. The screws on both sides of the synchronously shaped window are rotated manually with a crank and a transmission mechanism, or motor-driven, so that the clashes of the blades on both sides slide simultaneously, so that the blades run parallel while closing. completely or partially, or by completely releasing the opening.

To improve the packing system is made the attachment device of the blade so that it can reduce the pitch of the screws at the ends without interrupting the movement. The pitch determines the distance between the blades. By decreasing it at the ends of the screws without end, the separation between the blades decreases, allowing its storage in very little space.

In the endless screws, the central span, which coincides with the space of the facade opening, has the thread of the measurement of the width of the blade minus the width of the part of contact between them. At the ends, the worm has a span with a screw pitch measuring the thickness of the blade plus an ease, which determines the minimum space of heaping.

The devices for attaching the blades are nuts that are threaded into the endless screws, ensuring the union with these and also the safety of the assembly. The threading of the nuts to the screws is by means of bearings to allow the continuity of the translational movement despite the change of the thread.

The mechanism of inclination of the blades is interposed between the blades and the nuts for attachment to the screws. It is a piece that grasps the end of the blade and joins it to the nuts, and a rack parallel to the screws between the screws and the blades. The end piece of the blade is made up of an elongate part or fits the blade, joined to a pin with a pinion, hooked to the nut, so that it can rotate and transmit this movement to the blade.

The rack is placed laterally, all along the side of the window, in contact with the gables of the parts of the end of the blades. It can turn freely unless it is immobilized. When we go up and down the blades they drag it if it is released.

In order to turn the blades, the rack pressing is put on it by a control of the interior of the building, and by actuating the screws to move the blades, the pinions roll on the rack by tilting the blades.

Description of the first variant of the present invention.

The mechanism consists of two worm screws, one on each side of the opening of the facade, to which cling the ends of the blades. The worms have a helical rail, and by rotating the screws and preventing rotation of the shackles of the blades is transmitted to them a translational movement parallel to the longitudinal axis.

The rotation of the screws is actuated simultaneously, manually with a crank or motorized, of synchronized shape so that the translation movement produced parallel to the direction of its axis is the same. This is possible by rotating the screws on its axis by means of a horizontal bar with gears at the ends, which transmit rotation to the base of the worms. It can also be done with a belt or a transmission chain that turns the bases of the worm at the same time. A locking device prevents the blades from falling by gravity.

As all the devices for attaching the blades are orthogonal to the same generatrix of the cylinder surrounding the helix, they move at the same distance between them: a multiple distance of the screw pitch. This distance must measure the width of the blade minus the width of the contact surface between them. In the fully open position, that is by removing the blades, we obtain that they occupy a minimum of space by reducing the distance between them as described later.

As the blades are gripped by the end screws, by fixing the screws to the front the blades resist the wind pressure, which allows installation outside. This also causes the blades and their hooks to be pulled so that longer blades can be used without flexing for use in large facade openings. By firmly attaching the worm gear to the front and using sufficiently strong blades, you also get a security flap against theft that can be removed completely when it is not needed.

The permanent contact between the blades and the worm also allows the installation of a conductive wire to transmit solar energy collected by cells in the blades to the electrical network inside the building.

This mechanism allows to insert in the fastenings of the blades several kinds of mechanisms for actuating the rotation of the blades, as well as to rotate them in any position, controlling the opening and yet the admission of light and ventilation . Blades can be collected in any side of the facade opening, up or down. If the blades are vertical and the augers are horizontal the blades can be collected in the sides. With the worms in an inclined position can be covered inclined facade openings, and installed on structures, they can be used as blankets of weather, for example, porches or terraces.

• Dans le cas de l'adoption de la forme de vis sans fin par un rail en spirale autour d'une tige centrale, et dans le cas de la formation d'une fente hélicoïdale à l'intérieur d'un cylindre solide, le dispositif d'accrochement est un roulement cylindrique qui roule par la spirale, unie a une barre et tournant indépendamment d'elle. La barre connecte avec l'extrémité de la lame.

The attachment of the blades to the worm is done by means of devices that slide by the worm pushed by the spiral. According to the different shapes of the spiral, the devices for attaching the blades can be:

• In the case of adopting the form of worm by a spiral rail around a central rod, and in the case of the formation of a helical slot inside a solid cylinder, the device is a cylindrical bearing that rolls by the spiral, united to a bar and rotating independently of it. The bar connects with the end of the blade.

In the case of forming the screw with a helical plate united to a central rod to act as a nut thread, the blade attachment device is a hollow cylindrical piece with a slot in its inner surface for screwing. The cylindrical piece slides vertically without turning. It is joined to the blade by means of a bar which fits into the part which can rotate on its longitudinal axis. The blades can also be attached to the nuts by means of a cable wound to the workpiece and connected to the blade, stretched.

The stacking of the blades can be done at the top or bottom of the opening of facade, or in the lateral ones. If the sliding by the worm is by means of a bearing, the Blade picking is done by reducing the pitch of the screw until it is equal to the thickness of the blade plus a margin. It is also possible by removing the propeller at the end of the course; leaving the hanging devices of the blades piled up. In the case of using the hollow cylindrical part with the helical slot inside, the packing of the blades is done with a smooth span at the upper end of the worm, where the shackles will remain packed. They are unscrewed by the movement of the screw, and insert again into the screw by gravity or assisted by a spring, when the screw and the slot coincide.

1. (a) Dans la barre d'union entre le dispositif d'accrochage et la lame, se trouve un pignon activé par une crémaillère qui le fait rouler quand elle est pressionnée et que l'on fait monter ou baisser pour faire tourner les lames. La crémaillère est placée sur une plaque verticale que l'on pressionné ou pas contre les roulements.
2. (b) Dans les barres de transmission de la rotation des vis on place une articulation qui pousse ou retire les extrémités des barres. Quand elles sont élongées elles engrainent avec les bases des vis sans fin et produisent le mouvement de montée et descente des lames. Quand elles sont dans la position la plus courte, elles engrainent avec une crémaillère verticale, la soulevant ou l'abaissant, en faisant tourner les lames.
3. (c) Aux extrémités des lames on introduit une baguette engainée qui peut entrer plus ou moins dans la gaine, laissant une extrémité dehors. Cette extrémité peut être fixé et, en actionnant le déplacement des lames celles- ci s'inclinent. En la libérant, elles se déplacent.
4. (d) Dans le cas où les lames son prises par des câbles on intercale un dispositif pour rapprocher les câbles juste en dehors du dispositif d'accrochement. Les câbles vont tout le long de la lame, parallèles avec cette même distance entre eux. La pièce qui les rassemble est un pignon que l'on peut faire tourner, en faisant tourner la position des câbles et pourtant, aussi les lames.
5. (e) La rotation des lames peut se produire par un système de câbles fixés à ses angles et tirant d'un côté ou de l'autre, de l'extérieur ou de l'intérieur, de la même façon que l'on fait avec les rideaux de lames installés à l'intérieur des bâtiments. La traction des lames se fait du côté opposé au ramassage des lames, où les câbles ne sont pas tendus.

The mechanism for orienting the blades can be on the blade or between the blade and the worm, in the connection bar of the blade to the shackles. The blade can be rotated by itself, or one side of the blade can be immobilized while the other is moved by the movement of the augers. Several ways of operation are then described.

1. (a) In the bar between the shackle and the blade, there is a pinion activated by a rack which makes it roll when it is pressed and is raised or lowered to rotate the blades. The rack is placed on a vertical plate that is pressed against the bearings or not.
2. (b) In the transmission bars of the rotation of the screws is placed a joint which pushes or withdraws the ends of the bars. When they are elongated they engrain with the bases of the worm and produce the movement of rise and descent of the blades. When they are in the shortest position, they engrain with a vertical rack, lifting or lowering it, rotating the blades.
3. (c) At the ends of the blades is inserted a sheathed rod that can enter more or less into the sheath, leaving one end out. This end can be fixed and, by actuating the displacement of the blades they tilt. By releasing it, they move.
4. (d) In the case where the blades are taken by cables is interposed a device for bringing the cables just outside the fastening device. The cables go all along the blade, parallel with the same distance between them. The piece that brings them together is a pinion that can be rotated, rotating the position of the cables and yet, also the blades.
5. (e) The rotation of the blades may be by a system of cables fixed at its corners and pulling from one side or the other, from the outside or the inside, in the same way as one does with the curtains of blades installed inside the buildings. The traction of the blades is on the opposite side to the gathering of the blades, where the cables are not stretched.

The blades are gripped to the attachment device by a bar or by means of cables, as already described. The bar can take the blade by means of a rectangular piece by introducing into its interior the end of the blade. It can be fixed by pressure, adhere, or nail it. If the hooking is by cables, they are sheathed all along the blade, from one worm to the other. Hearing the cables avoids bending of the blade.

The blades can be made of different materials, wood, metal, plastic, in all cases prepared for the outdoors. The blades can be trac- tioned since they are grasped by the ends to the side screws, which allows longer blades to be used for larger facade openings.

By using sufficiently strong blades (for example curved steel plates), or continuing along the length of the blade the hooking bar, from one endless screw to the other, made of steel, a closure is obtained. security against theft, like a removable fence.

With solar cells placed on the blades, electrical energy can be transmitted to the side worms. Inside these one connects with the electrical network of the interior of the building. Solar energy capture can be optimized by using sensors to orient the blades perpendicular to the rays.

All parts described as metallic may be made of other materials, such as nylon or wood.

The simplicity of the installation and its operation makes it possible to deliver it by pieces to be assembled by the users.

Description of the second variant of the present invention.

The mechanism consists of the following elements: two worm screws 1 ', one on each side of the facade opening, with one or more spirals, which have at one or both ends, a span with the screw pitch decreased by relative to the thread of the central span; fastening devices 3 'of the blades which are threaded to the worm by means of bearings 4'; a support part of the blade 5 'which unites it to the attachment device 3', provided with a pinion 6 'to actuate the inclination of the blade; a rack 7 'which travels the distance from the side of the front opening and contacts with the pinions 6' of the blade support parts 5 'which are in the span of the front opening; a device 8 'brake the rack 7' to actuate the inclination of the blades by preventing its translation, rolling the pinions 6 'when the worm is rotated 1' with the rack 7 'braked; a carcass 9 'surrounding the assembly to protect it, with fasteners to the facade, and with a vertical slot or guide 10' by which the blades are connected with the mechanism located inside. The operation is as follows:

(a) The vertical movement of the blades:

The blades are gripped by two worm 1 'located alongside the front opening to cover. They are taken by means of the attachment devices 3 'which are nuts which are supported in the spirals of the worm by means of bearings 4'. By rotating the worm 1 'while preventing rotation of the attachment devices 3' they move along the worm 1 'pushed by the bearings 4'. The latching devices 3 'are prevented from rotating by means of a guide 10'.

The rotation of the worm 1 'is acted simultaneously, manually with a crank or motorized, synchronized so that the vertical translation movement is the same. By means of a device the worm is inserted by preventing the blades from falling by gravity.

The blades are gripped to the attachment devices 3 'via a part 5' which supports them. The blades move while maintaining the same distance between them. This distance is a multiple of the pitch of the worm 1 '. It must measure the width of the blade minus the width of the contact surface between them when they are closed, so that the front opening is completely covered when the blades touch each other.

(b) The collection of the blades out of the facade opening:

The endless screws 1 'at their ends have bays with a smaller screw pitch 2' than that of the central span corresponding to the front opening. The attachment devices 3 'are threaded into the worm by means of bearings 4', to allow the continuity of the translational movement in the variation of the thread. When the shackles 3 'arrive in the spans 2' of the ends, the distance between them decreases, piling the blades in little space outside the opening of the facade. The distance between them is equal to the thickness of the blade plus an ease.

(c) The orientation of the blades:

The pinion 6 'of the blade support part 5' is in contact with the rack 7 'and drives it in its translation movement. By immobilizing the rack with a brake 8 ', the pinion 6' rolls on the rack when the translational movement is actuated, rotating the blade. The rack 7 'contact only with the gears that are in the central span that corresponds to the front opening, it does not act on those that are collected in the bay with the screw pitch decreased.

5. SUMMARY DESCRIPTION OF CONTENTS OF FIGURES

• Les figures n° 5 à 59 représentent la première variante de la présente invention avec quatre exemples de fonctionnement A, B, C et D.

Figures 1 to 4 show the second variant of the present invention:

• Figures 5 to 59 show the first variant of the present invention with four examples of operation A, B, C and D.

The images of the set and the details of the larger pieces are represented.

6. EXAMPLES OF CARRYING OUT THE INVENTION

• Figure 1: Vue frontale, plan horizontal et coupe verticale du latéral du volet de lames avec le mécanisme d'actionnement, dans une vue de l'ensemble, où l'on peut voir la vis sans fin 1' la travée supérieure de celui-ci avec la variation du pas de vis 2', les dispositifs d'accrochage 3' des lames, les pignons 6' et la crémaillère 7' d'inclination des lames, et le dispositif de frein de la crémaillère 8'.
• Figure 2: Détail en vue frontale et coupe verticale de la partie supérieure où l'on peut voir la vis sans fin 1' avec la variation du pas de vis 2', les dispositifs d'accrochage 3' des lames enfilés à la vis sans fin 1' qui s'appuient sur les hélices au moyen de roulements 4', les pignons des pièces de support 5' des lames.
• Figure 3: Plan horizontal et vue frontale du détail du dispositif d'accrochage 3' enfilé à la vis sans fin 1' avec les roulements 4', l'insertion dans celle-ci de la pièce de support 5' de la lame avec le pignon 6' d'actionnement de l'inclination, et la lame.
• Figure 4: Plan horizontal, vue frontale et coupe verticale du détail de la partie inférieure du mécanisme où l'on peut voir le mécanisme d'inclination des lames, avec le dispositif de frein 8' de la crémaillère 7', les pignons 6' des pièces de support 5' des lames en contact avec la crémaillère 7'; la coupe verticale des dispositifs d'accrochage 3' avec les roulements enfilés a la vis sans fin 1' et la position de l'ensemble avec la carcasse de protection et la pièce de support 5' de la lame dans la guide 10'.

For the second variant of the present invention, cf. Fig. 1 a 4:

• Figure 1 : Front view, horizontal plane and vertical section of the side of the blade shutter with the actuating mechanism, in a view of the assembly, where we can see the worm 1 'the upper span of it with the variation of the thread 2 ', the shackles 3' of the blades, the pinions 6 'and the inclined rack 7' of the blades, and the brake device of the rack 8 '.
• Figure 2 : Detail in front view and vertical section of the upper part where we can see the worm 1 'with the variation of the thread 2', the attachment devices 3 'blades slipped to the worm 1 'which rely on the propellers by means of bearings 4', the gears of the support parts 5 'of the blades.
• Figure 3 : Horizontal plane and front view of the detail of the attachment device 3 'threaded with the worm 1' with the bearings 4 ', the insertion therein of the support part 5' of the blade with the pinion 6 'of actuating the inclination, and the blade.
• Figure 4 : Horizontal plane, frontal view and vertical section of the detail of the lower part of the mechanism where we can see the mechanism of inclination of the blades, with the brake device 8 'of the rack 7', the pinions 6 'of the parts support 5 'of the blades in contact with the rack 7'; the vertical section of the attachment devices 3 'with the bearings threaded to the worm 1' and the position of the assembly with the protective casing and the support part 5 'of the blade in the guide 10'.

For the first variant of the present invention, cf. Fig. 5 to 59 :

EXAMPLE A

1. 1. The worms which turn to produce the translation movement parallel to the longitudinal axis are constituted by a U-shaped helical rail with a central shaft 1 in which a bearing 8 is housed.
2. 2. The manual or motorized mechanism transmits the rotational movement to the lateral spirals about its longitudinal axis by a bar.
3. 3. The fasteners of the blades to the propellers are cylindrical bearings. The bearing 8 is united at the end of a rod 7, which is fixed to the end of the blade. The rod 7 has a grooved bay or pinion 19 to actuate the rotation of the blades.
4. 4. To prevent the movement of the bearings 8 out of the line of motion parallel to the axis of the spiral, the bars 7 are held in position through the slot of a fixed cylinder 14 which surrounds the propeller 1. This cylinder also protects the propeller and bearings.
5. 5. The mechanism of rotation of the blades: Between the cylinder 14 and the space occupied by the blades is placed a rack 20 which by pressing against the pinion 19 of the bar 7 rotates. By means of a pinion 24 installed in the drive transmission bar of the worm 1, a vertical movement of the rack 20 is produced which rotates the pinion 19 of the bar 7 and thus the inclination of blades. The pinion 24 moves pushed by a mechanism 21 located in the transmission rod composed of rods 26 driven by a central axis 25.
6. 6. The blade storage device out of the front opening: At the ends of the worm 1, out of the span that covers the front opening, propellers have been modified to reduce the screw pitch 4, which brings together the blades occupying little space.

EXAMPLE B

1. 1. The worms that rotate to produce the translation movement parallel to the longitudinal axis are constituted by a solid cylinder with a helical groove 2 widened on the inside, where the bearings are placed. 8.
2. 2. The manual or motorized mechanism transmits the rotational movement to the lateral spirals around its longitudinal axis by a bar as in the model A.
3. 3. The fasteners of the blades to the worm are the bearings 8 housed in the helical groove of the cylinder 2, united to the bars 7.
4. 4. To prevent movement of the fasteners of the blades 8 out of the line of motion parallel to the axis of the spiral, the bar 7 which unites the end of the blade falls on the vertical plate 15 which prevents them from descending through the rail.
5. 5. The rotation of the blades is produced by a tilting rack 20 as in the model A, which is fixed by means of two parallel axes 21 to a fixed plate 22. By actuating a lever 23 vertically, the pinions 19 are touched or released. In the rest position the gables must be held to maintain the inclination of the blades. Once released, the blades can move in the direction of the axis of the screw. The shape of the pinion 19 may be a span of the same bar 7 with the striated surface.
6. 6. The device for storing the blades out of the front opening: At the upper end of the propeller is disposed a straight rail 5, in which the bearings 8 are pushed by the movement of the screw 2 when they arrive at the top. The blades are thus collected in a compartment 5 outside the front opening. By gravity the bearings 8 will be taken up in the propellers when they rotate in the downward direction.

EXAMPLE C

1. 1. The worms which turn to produce the translation movement parallel to its longitudinal axis, are formed by a helical thread fixed around a central shaft 3 to be inserted like a tongue in a slot 11 in the fastenings of the blades 9.
2. 2. The manual or motorized mechanism transmits the rotational movement to the lateral spirals about its longitudinal axis by a bar as in the models A and B, or by a chain, or by a belt.
3. 3. The fasteners of the blades to the worm are nuts 9 by the inside of which passes the screw 3. In the inner slot of the nut is inserted the tongue of the screw 3. By turning the screws and preventing to rotate the nuts, the translational movement of the bar 7 and the bearing 8 located inside the nut 9, occurs similar in shape to the models A and B. The union of the blade to the nut can also be done by cables wrapped with the nut by its outside and taken with the blade with traction. The cables are gathered in a pinion before being fixed to the blades.
4. 4. The device which prevents the movement of the fixings of the blades out of the line of motion parallel to the axis of the spiral is the same part 9, because it has confined to its interior the bearing 8.
5. 5.The mechanisms of rotation of the blades can be like those of the models A and B, by means of the parts 19 and 20, in the case of use of the bar 7 and the bearing 8, also in the case of the fixing by cables, by activating the rotation on the cylindrical piece which traps the cables.
6. 6.The blade storage device out of the facade opening: at the upper end of the screw there is a smooth span without spiral 6, or stack the blades fixing devices. By gravity they will enter the propeller when the screws turn in the direction of the descent. If the stacking is not vertical, we will add a spring to recover the position.

EXAMPLE D

The worm 3, and the blade storage device out of the front opening 6 are as in the model C. What changes is the way to actuate the rotation of the blades.

The nuts 10 for fixing the blades are similar to the part 9 of the model C. They are differentiated by a horizontal striated surface 12 or support the securing bearings 13 of the blades. They roll on this surface 12, transmitting the rotation by means of the rod 7.

The device which prevents the displacement of the securing bearings 13 of the blades from the line of the translation movement parallel to the axis of the spiral 3 is a longitudinal plate 16 which is inserted into the notches 18 made in the outer surface of the nuts 10. The same device 16, 18, actuates the rotation of the blades, by moving the longitudinal plate 16 in a circular motion about the axis of the helix 3 by rotating the nuts 10 and then the bearing 13 on the striated surface horizontal 12 by turning the bar 7 and thus the blade.

The following text describes in more detail the components of the invention:

Mechanism for securing and actuating adjustable and removable blade closures, which is characterized by having a blade translation operator formed by two parallel worms 1, 2, 3, to which the ends of the blades are attached and which rotate of synchronized shape around their respective axes. The shapes of the screws may be: either a U-shaped helical rail attached to a central shaft 1, or a helical slot groove in a cylinder 2, or a helical thread fixed to a central shaft 3.

Mechanism for securing and actuating pivotable and removable blade closures, such as the previous mechanism, which is characterized by the fact of packing 4, 5, 6, blades out of the front opening by decreasing the distance between them to occupy as little space as possible when collecting them.

It can be done by reducing the screw pitch 4, finishing the propeller in a straight rail where the brackets of the blades 5 are introduced, by finishing the screw with a smooth span without propeller 6, by stacking the nuts 9, 10 .

Mechanism for securing and actuating pivotable and removable blade closures, such as the previous mechanism, which is characterized by having devices attaching blades 7, 8, 9, 10 to the worm. These devices do not prevent the blade from rotating on its longitudinal axis, and they allow the translational movement of the blades along the screws. These mechanisms can be formed by bars 7 fixed to the blades in extension of them, with a bearing 8 at its end which is seized to the spiral of the screw; or nuts 9 to which the screws 3 are wound and which take the bars 7 fixed to the blades; or nuts with a horizontal striated surface where the bearings 13 attached to the bars 7 which support the blades bear.

Mechanism for securing and actuating pivotable and removable blade closures, as in the previous mechanism, characterized by producing movement along the screws by means of the devices 14, 15, 16, preventing rotation of the devices securing the blades 7, 8, 9 around the axes of the screws. These devices can be formed by a cylindrical tube 14 with a longitudinal groove 17 which forces the bars 7 to. to move there; a fixed vertical plate 15 which prevents the bars from descending by turning by the helix of the screw 3; a vertical plate 16 which fits into the notches 18 made in the outer surface of the nuts 10 by fixing its position.

Mechanism of rotation of the blades on their longitudinal axis by means of a pinion 19, located in the securing bars 7 of the blades, and with the same longitudinal axis. The rotation is triggered by a mechanism comprising a rocker rack 20, which is taken by two parallel axes 21 to a fixed plate 22 to actuate in vertical movement by a lever 23, by pressing or releasing the pinions 19. In the rest position the gables must be grasped to maintain the inclination of the blades. Once released, the blades can move in the direction of the axis of the screw. The shape of the pinion 19 may be a span of the same bar 7 with the striated surface. The rack 20 can also be actuated by a mechanism comprising a pinion 24 with two positions, moved from the rack or facing it, the displacement from one position to the other is done by means of a central axis 25 which in turn push rods 26 that have been fixed at the ends of the pinions 24.

In the case of securing the blade by means of a nut 10 the inclination mechanism will be a frustoconical bearing 13 fixed to the end of the bar 7 which is placed on a horizontal striated surface 12 located in the nut 10. By means of a vertical plate 16 which fixes the position of the securing pieces 10 they are rotated so that the striated surface moves horizontally as the frustoconical bearing 13 rotates.

Closing of adjustable and removable blades, for the outside, safety, which is characterized by having a blade translation operator formed by two worm 1 'with one or more propellers, located in the side of the l opening to cover and which rotate in synchronized form.

Closing of adjustable and removable blades, for the exterior, safety, according to the previous closure, which is characterized by having a blade translation operator formed by two worm 1 'with one or more propellers, located in the laterals of the opening to cover, with a variation in the thread 2 'in one or both ends of each worm 1', by changing the distance between the devices 3 'of attachment blades, which are threaded to the screws without end 1 '.

Closing of adjustable and removable blades, for the exterior, security, according to the previous closure, which is characterized by having fastening devices 3 'screwed to the screws 1' which are supported in the propellers by means of of cylindrical or ball bearings 4 'so that it admits the variation of the pitch 2' worm 1 '.

Closing of adjustable and removable blades, for outdoor safety, according to the previous closure, which is characterized by having a mechanism for rotating the blades which consists of a pinion 6 'placed in the axis of the workpiece 5' for supporting the blade, a rack 7 'which rotates driven by the translation of the pinions 6' when the blades are located in the space of the front opening, and a brake device 8 'of the rack to block its movement and produce the rotation of the gears when one actuates the movement of translation.

Claims (15)

1. Mechanism for fastening and operating removable and adjustable slats shutting, comprising
   slats with slat fastening pieces (5') fixed to them in extension,
   a slat translational operator made of two parallel endless screws (1, 1', 2, 3) that may be located on the sides of the hollow to be covered and that rotate synchronously around their respective axes to which the ends of the slats are attached by their fastening parts (5') and
   a slat rotation around its axis mechanism;
   characterized by
   the rotation mechanism is driven through gears (6', 19) or conical bearings (13) located on the fastening pieces (5') of the slats, and with the same longitudinal axis.
2. Mechanism according to claim 1,
   characterized by
   the two screws (1') have one or more helixes and the slat fastening pieces (5') are fastened to the screws (1') by means of fasteners (3') bolted to the screws (1') which are threaded in the screws (1') and rest on the helixes by cylindrical or ball bearings (4'), so that the pitch reduction (2') of the screw's (1') is practicable.
3. Mechanism according to claim 1 or 2,
   characterized by
   the slat fastening parts (5 ') are rods or bars (7).
4. Mechanism according to one of claims 1 to 3,
   characterized by comprising
   a mechanism for rotating the slats composed of a gear (6') located in the axis of the slat fastening piece (5'), a zip (7') that rotates driven by the translation of the gears (6') when the slats are situated in the space of the hollow of the facade, and a braking device (8') of the zip (7').
5. Mechanism according to one of claims 1 to 3,
   characterized by
   rotation is produced by a mechanism comprising a pivoting zip (20) held by two parallel axes (21) to a fixed plate (22) to be activated by a lever (23) in a vertical movement, pressing or releasing the gears (19).
6. Mechanism according to claim 4 or 5,
   characterized by
   in a rest position, the gears (6', 19) should be held to maintain the inclination of the slats and once released, the slats can be moved in the axial direction of the screw (1, 1', 2, 3).
7. Mechanism according to one of claims 1 to 6,
   characterized by
   the shape of the gear (6', 19) can be a section of the same bar (7) with a grooved surface.
8. Mechanism according to one of claims 5 to 7,
   characterized by
   the zip (20) is driven by a mechanism comprising a gear (24) with two positions, displaced from the zip or in front of it, the movement from one position to the other is made by means of a central axis (25) that by turning pushes the rods (26) which have been fixed to the ends of the gears (24).
9. Mechanism according to claim 1,
   characterized by comprising
   a nut (10) for holding the slat, the tilt mechanism is a conical bearing (13) fixed to the end of the rod (7) that rests on a horizontal and grooved surface (12) on the nut (10) and, by a vertical plate (16) that fixes the position of the holding pieces, these pieces are rotated so that the grooved surface moves horizontally while the conical bearing (13) rotates.
10. Mechanism according to one of claims 1 to 9,
    characterized by comprising
    fasteners of the slats to the endless screws (1, 2, 3) do not prevent the slat from rotating around its longitudinal axis, and allow translational movement of the slats along screws.
11. Mechanism according to claim 10,
    characterized by
    fasteners of the slats to the endless screws are formed by rods (7) with a bearing (8) at their ends that is caught in the endless screw (1, 2) or
    nuts (9) screwed on screws (3) and that holds the bars (7) fixed to the slats or
    nuts (10) with the grooved horizontal surface (12) on which the conical bearings (13) fixed to the bars (7) rest.
12. Mechanism according to claim 10, 11,
    characterized by
    for the stack (2', 4, 5, 6) of the slats outside of the hollow facade decreasing the distance between them in order to occupy less space when collected, it reduces the pitch(2', 4) of the screw (1', 1), it ends the helix (2) at a straight lane (5) where the slat supports are introduced, it ends the screw (3) with an even section without helix for stacking the fastening devices (3', 7 and 8, 9,10) in each case.
13. Mechanism according to one of claims 10 to 12,
    characterized by comprising
    devices (14, 15, 16) to prevent the fastening devices (9, 10) of the slats from rotating around the axes of the screws as they move along the screw (1, 2, 3).
14. Mechanism according to claim 13,
    characterized by
    devices (14, 15, 16) are formed by:

    a cylindrical tube (14) with a longitudinal slot (17) forcing the bars (7) to move or

    a fixed vertical plate (15) that prevents the bars from descending turning with the screw helix (3) or

    a vertical plate (16) inserted into the slots (18) made on the outer surface of the nuts (10) fixing its position.
15. Orientable and removable slats closure for the outside and for security,
    characterized by comprising
    a mechanism for holding and driving the orientable and removable slats closure according to one of claims 1 to 14.

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