Anti-mosquito screen system

Abstract

 The anti-mosquito screen system with articulated guides (2 & 3) consists of a strap (4) placed vertically and revolved around two pulleys inside the restraint (1) or sliding box (14) and along it. The strap forms on each of its side two implied parallelogram parallel sections, the internal (19) and the external (20). The articulated guides enter and get out of those sections. To one pulley (5 or 6) is connected a special stabilization accessory of the strap's height (8) in stable position, vertically to the internal wall of the box fixed by two screws (15), inside two grooves/"teeths" (16). The accessory is the point on which one of the two articulated guides terminates its sliding. From the point that the accessory lies and above, the user is able to cut the box at the exact height of the frame. The two articulated guides lied inside the box are in vertical position, parallel to each other, with the strap's sides and the walls of the box.

Description

[0001] The invention belongs to the field of mechanics with regard to anti-mosquito screen systems that are used for horizontal door sliding.

[0002] According to today's state of the art, those systems use two kinds of anti-mosquito's screen (net): the stretched screen that is rolled and unrolled and the pleated (folded) screen which is folded and unfolded. With both examples of screen, the anti-mosquito system consists always of the following accessories: one vertical restraint box that is screwed on one of the two vertical frames, one lateral fixed guide screwed on the opposite vertical frame, one vertical sliding box which moves between the restraint box and the lateral fixed guide and in a position parallel to them, by rolling and unrolling the screen, and two articulated guides that are built-in and consist a part of the entire system. The entire anti-mosquito screen is a folded frame that has the restraint and the sliding boxes as its two vertical sides and the two articulated guides, the upper and the lower, as its two horizontal sides. Those articulated guides are formerly used as guides in several applications (IGUS' DE3806400 guides for electrical cables).

[0003] The anti-mosquito screens with articulated guides work as follows: In principle, the articulated guides are placed inside the restraint box. When the user pulls the sliding box in order to unroll the anti-mosquito screen, the two articulated guides, due to their joints, are bended by each joint and get out of the upper and the lower opening of the restraint box, taking a horizontal position at the upper and the lower opening of the frame.

[0004] If the anti-mosquito screen is a stretched one (not a pleaded one), it is enrolled around the restraint axis which is placed inside and along the sliding box.

[0005] As the anti-mosquito screen is unrolled, its ends, the upper and the lower, are always inside the articulated guides. On the contrary, when the user wants to wind up the screen and bring it back in its original position within the restraint box, he presses the sliding box towards its initial position and simultaneously he also presses the two articulated guides which, due to their joints, are bended again by each joint and reenter into the restraint box, in their initial position. Similar is the functioning of the systems with a pleated screen. The only difference this time is that the screen is folded in folds (it is pleated) between the two vertical boxes, the restraint and the sliding ones, and that the articulated guides can be placed in the sliding box also. The pleated screen folds and unfolds in its pleats, having short ropes which traverse it longwise and one of the ends of those ropes is fixed on the sliding box, whereas the other end of the ropes is fixed on the ends of the articulated guides that are inside the restraint box. The short ropes are always of even number and being placed in equal distances one from the other are useful in keeping the pleated screen straight in its position, when it is unfolded. They are also useful for its refolding in its pleats.

[0006] Apart from the short ropes that are specifically used when the anti-mosquito screen has a pleated screen, most of the systems, either with stretched or with pleated screen, use another additional short rope which, in crosswise form, connects one end of the upper articulated guide with one end of the lower articulated guide. Those ends are inside the restraint box (indicative example EP 0999335 Al). Thus, the movement of one of the articulated guides leads to the movement of the other, since their ends are connected.

[0007] The anti-mosquito systems with articulated guides, having either a stretched or a pleated screen, in order to be placed at an opening (frame), it is a precondition the height measurements of the specific opening to be taken. The restraint and the sliding boxes, as well as the lateral guide, are always ordered in the exact height of the specific openings. When the anti-mosquito systems are prepared, they are delivered set to be placed mounted as a folding closed frame. That is, the restraint box and the sliding box are in the specific measurements of the opening ordered for; the screen is in its position and the two articulated sliding guides (upper and lower) are placed inside the box. In other words, it is about a prepared frame which is screwed on the specific opening ordered for. The same applies of course to the vertical lateral guide which is also delivered in the specific height ordered for so as to be screwed on the opposite vertical door opening.

[0008] The placement is accomplished as follows: The restraint box is screwed on the one vertical frame and the vertical lateral guide on the opposite vertical frame; that is in a parallel position to the restraint box. The sliding box is parallel and moves between them; that is parallel to the restraint box and the lateral guide. It is the box that moves, goes and returns, by opening or closing at the same time the screen.

[0009] The technical problems that today's above-described state of the art presents refer to the pleated screen as well as to the automatic screen with the stretched screen and are the following:

The main disadvantage and technical problem of the above today's state of the art is that if the frame's measurements are not taken correctly, and more specifically the height measurements of the restraint box, the sliding box and the vertical lateral guide, the entire anti-mosquito system is useless, and thus the measurements must be retaken and a new system must be ordered from the outset. It is entirely replaced because, what regards the placement, the system consists a unified technical element, a prepared frame of four sides which is manufactured in the specific measurements of the order. That frame is a folding one, it opens and closes longwise, due to the articulated guides, but its vertical sides are of fixed and not variable length. The anti-mosquito system that was cut and mounted in wrong dimensions is not repaired and there is not any possibility for any accessory of which the anti-mosquito screen system consists of, to be replaced. More particularly, incorrect height of the vertical lateral side and of the two boxes cannot be corrected. What regards them, only a mistake in the order of ± 1 mm accepts an excuse.

[0010] A second technical problem that today's state of the art presents is that when the anti-mosquito's device screen is wound up and the two articulated sliding guides revert and enter the fixed restraint box, the two guides slide (in some systems) one over the other or one inside the other, or (in some other systems) they slide inside metal skeletons, with a result to create huge noise, embarrassing for the user. The noise is due to the fact that, in many systems, the two ends of the articulated guides, one from the first and one from the second, which are inside the box fastened together by the short rope, are pulled by the short rope in a direction out of a straight way. That opposite force that the attraction from the short rope exerts on their ends causes on one hand the guides' friction either between them or against metal skeletons and on the other hand it creates noise.

[0011] Finally, a third technical problem is that apart from the noise the two guides, when they meet each other and terminate, sometimes hook each other and thus they get blocked. In order the user to unblock them, he has to pull out the sliding box by using great force. By a repeated blocking, the guides' ends are damaged and they need to be replaced.

[0012] For the first technical problem, that of the mistaken height measurements, there is not any solution proposed in today's state of the art.

[0013] Equally, the second technical problem of noise is not solved in EP 1905944 B1 which only applies to stretched screen and one guide enters the other. The short ropes pull the guides in a direction one towards the other. Thus, the two articulated guides, as one enter the other, create friction against their lateral walls and an embarrassing noise is caused. At this point, the problem of the guides' blocking to each other is also present.

[0014] The same technical problem of noise is not solved in EP 1783320 A1 and EP 1640554 which again only apply to stretched screen where one guide stops when it meets the other (one does not enter the other). At this point again, the short ropes pull the guides out of a straight way and because of that, the guides rub up against the lateral walls and noise is created, as well as the guides' blocking to each other.

[0015] The same technical problem of noise is not solved in EP 0999335 B1, EP 1903175 A2, EP 1653038 A1 και WO 2007/148756 A1 which only apply to screens with a pleated screen, where again the short ropes exert an attraction on the guides with a direction out of a straight way and because of that, the guides rub up against the lateral walls and noise is created or the guides, as they enter each other, they create friction to each other and thus noise is caused. At this point, the problem of the guides' blocking to each other is also present.

[0016] Finally, there is also WO2010/016325 A1 which replaces the short ropes used for the connection of the ends of the two articulated guides, with a strap. The guides are connected to points of the strap's perimeter, which revolves around two pulleys. The two guides roll inside a profile with partition inserts in the middle, along the box, by forming along its entire length two sections. At the same time, as the strap revolves around two pulleys, its sides however are not parallel because the articulated guides, which have their ends fastened at points of its circumference, slide always on the box partition inserts and pull constantly the strap towards them, out of its straight way. The technical problem of noise exists because of that, that is the opposite force between the strap and the articulated guides which on one hand pull the strap towards them out of its straight way, on the other hand they slide inside the profile of the box with the partition inserts in the middle where friction is created and resistance is encountered.

[0017] The present invention uses also a strap but in a different way from today's state of the art, as it uses accessories that allow the complete abolishment of the two separate sections.

[0018] More specifically, the present invention solves the three above technical problems that refer to the wrong measurement of dimensions, to the noise and to the guides' blocking and is applied in the same way and with the same technical elements to the automatic screen as well as to the pleated screen, without any discrimination.

[0019] In principle, it solves the noise and the blocking problem, as the two guides neither meet each other nor slide inside two parallel guides. Also no short ropes are used in order to fasten the end of one articulated guide to the other's end. There are not friction powers which the user has to overcome by force.

[0020] In addition, it solves the wrong height measurements problem, as it provides a special accessory to stabilize the strap's height, thanks to which the internal system's mechanism becomes independent from the boxes' height.

[0021] In brief, the invention uses specifically a unified vertical section, and not two parallel ones with partition inserts. Inside the section lies the strap which revolves around two pulleys. One pulley is connected to a special stabilization accessory of the strap's height.

[0022] The first joints of the first articulated guide are connected to a point of their "back" with a point of the strap's circumference. The articulated guide toes the line with the moving strap and follows the same vertical movement with it without being pulled by the short ropes out of its way. Thus, there is not a guide's friction against the walls and noise is not created. The guide is terminated on the special stabilization accessory of the strap's height.

[0023] In a similar way, the first joints of the second articulated guide which enters from the opposite side are also connected to the strap's circumference at a point diametrically opposite to the connection point of the first articulated guide. The connection of the joints with the strap is made by a special additional accessory. This guide also toes the line with the moving strap and follows its vertical way. The guides enter and get out of the box by following a parallel way with the straight vertical way of the strap and thus the noise is obliterated. When the guides are out of the restraint box, they are horizontal by constituting the upper and the lower part of the frame. When the guides are inside the restraint box, they are vertical, completely parallel to each other and to the two sides of the strap. Thanks to guides' vertical position, the present invention obliterates the frictions of the articulated guides as between them as against the walls of the box profile which they enter and get out of.

[0024] A first advantage of the present invention is that it is solves the technical problem caused when the order of the anti-mosquito system comes from the factory in wrong measurements, bigger in height from the opening at which the system will be placed, a problem often arisen. Thanks to its special stabilization accessory of the strap's height, the entire mechanism of the mosquito screen in the present invention stops quite below, being thus completely autonomous from the upper articulated guide of the mosquito screen; an element which permits the user to measure and cut the restraint and the sliding boxes (with the screen) in the proper measurements on the spot in the placement room. Afterwards, he mounts on the spot the upper articulated guide, he closes the top (cap) of the restraint box and screws the system on the door openings.

[0025] The solution of that problem is maximized as the production factory can produce directly prepared pre-manufactured anti-mosquito screen systems (kit) in specific height categories of the two boxes (restraint and sliding ones) and of the lateral guide, for example "kit with a boxes and guide height from 1900 to 2200mm", "kit with height from 2201 to 2500mm" and "kit with height from 2501 to 2800mm". In contrary to all systems of today's state of the art and thanks to the stabilization accessory of the strap's height which the present invention provides, the kits leave the production factory without the accessories of the upper articulated guide and those of the upper box cap being mounted on them and without a danger the product to be dismounted because of that. Those accessories will be mounted later by the user himself in the placement room. Thus, for example, if two frames' openings of 2000mm and 2100mm height each separately are to be covered, the user will choose two same "kits with height from 1900 to 2200mm" and will cut the boxes and the lateral guide at any point of the length between 1900mm to 2200 mm and hereupon at 2000mm for one opening and at 2100mm for the other, on the spot in the placement room. This is accomplished thanks to the special stabilization accessory of the strap's height which makes the entire mechanism of the anti-mosquito screen autonomous under a point defined as the minimum kit's point that in the specific example are the 1900mm. Thus, the user cuts on the spot in the placement room the boxes in the proper measurements. If he cuts them high, he has to cut them even more. If he cuts them short, he has to cut a similar new kit and after that he adds the upper articulated guide and the cap and screws the system on the door openings. The one and only choice that the user has to make is to decide if he wants the kit supplied to have a stretched or a pleated screen.

[0026] A second advantage of the present invention is that thanks to strap and the stabilization means at the back of the first joints, the usage of the two separate internal sections is completely abolished and they are replaced by a unified section without any partition. It is also abolished the usage of the unified rope that fastened and connected together, crosswise, the ends of the two articulated guides. The outcome is that the two articulated guides move in straights, completely parallel as to each other and as to strap's sides without coming in touch neither with each other nor with the aluminium walls of the profile and that the frictions of the articulated guides and the resistances exerted for their movement against the strap are obliterated. Thus the noise friction problem and the blocking problem that the today's state of the art presents are completely obliterated.

[0027] However, the main advantage of the present invention is that it offers an exceptional time saving to the user who buys prepared kits and he does not need to wait the order execution of specific measurements.

[0028] The 19 Drawings with the 38 Figures that accompany the invention illustrate, in brief, the following:

Drawing 1 pictures in vertical section the profile of the restraint box, the strap, the stabilization accessory of the strap's height placed in vertical position towards the internal wall of the box, particularly what regards the application of the invention to a stretched anti-mosquito screen, inside the internal section of the restraint box (fig. 1a) and inside the external section of the restraint box (fig. 1b).

[0029] Drawing 2 pictures the same technical features with Drawing 1, particularly what regards the application of the invention to a pleated anti-mosquito screen, to the external section (2b) and to the internal section (2a).

[0030] Drawing 3 pictures in cross-section B-B' with an upward view the anti-mosquito system with a stretched screen, with the two articulated guides be in starting position and the screen completely unrolled from its axis (fig. 3a), as well as the section with the restraint box and the sliding box that contains the roll-up axis of the stretched screen (fig. 3b).

[0031] Drawing 4 pictures the internal of the restraint box with the two articulated guides (upper and lower) in motion inside it, where the lower bears on its "back" of its two first joints stabilization means on the strap, whereas the upper bears on its two first joints additional accessories with which the joints are connected to the strap. The guides' fixation points on strap's perimeter are diametrically opposite to each other. In the Figure, the two guides are in starting position (fig. 4a), in a position in the middle of the way (fig. 4b) and in terminal position (fig. 4c). In that Figure, the screen is stretched, rolled.

[0032] Drawing 5 pictures in cross-section A-A' with an upward view the internal of the restraint box with the two guides in starting position (fig. 5a), with the stabilization accessory of the strap's height, the screws that fix it, one of the two pulleys with the strap around it, one of the two articulated guides and the additional accessory with which is connected the end of the guide to the strap (fig. 5b). In that Figure, the screen is stretched, rolled.

[0033] Drawing 6 pictures also in cross-section B-B' with an upward view the internal of the restraint box with the stabilization accessory of the strap's height, one of the two pulleys with the strap around it (fig. 6b) and the two articulated guides in a position in the middle of the way (fig. 6a). In that Figure, the screen is stretched, rolled.

[0034] Drawing 7 pictures also in cross-section C-C' with a downward view the internal of the restraint box with the two articulated guides in terminal position (fig. 7a), one of the two pulleys with the strap around it and the additional accessory with which is connected the end of the guide to the strap (fig. 7b). In that Figure, the screen is stretched, rolled.

[0035] Drawing 8 pictures in cross-section B-B' with an upward view the restraint box and the sliding box (8b) from the anti-mosquito system, with a pleated screen which is traversed by short ropes along it, with the two articulated guides in starting position and the screen completely unfolded (8a).

[0036] Drawing 9 pictures in cross-section A-A' with an upward view the internal of the box with the two guides in starting position (fig. 9a), with the stabilization accessory of the strap's height, the screws that fix it, one of the two pulleys with the strap around it, one of the two articulated guides and the additional accessory with which is connected the end of the guide to the strap (fig. 9b). In that Figure, the screen is pleated, it folds and unfolds and is traversed by short ropes, horizontally along it. In all other points it is the same with Drawing 5.

[0037] Drawing 10 pictures also in cross-section B-B' with an upward view the internal of the box with the stabilization accessory of the strap's height, one of the two pulleys with the strap around it (fig. 10b), the two articulated guides in a position in the middle of the way (fig. 10a). In that Figure, the screen is pleated, it folds and unfolds and is traversed by short ropes, horizontally along it. In all other points it is the same with Drawing 6.

[0038] Drawing 11 pictures also in cross-section C-C' with a downward view the internal of the box with the two articulated guides in terminal position (fig. 11a), one of the pulleys with the strap around it and the additional accessory with which is connected the end of one of the two guides to the strap (fig. 11b). In that Figure, the screen is pleated, it folds and unfolds and is traversed by short ropes, horizontally along it. In all other points is the same with Drawing 7.

[0039] Drawing 12 pictures in cross-section B-B' with an upward view the restraint box and the sliding box from the anti-mosquito system with a pleated screen (fig. 12b) which applies the present invention to both vertical boxes at the same time, as to the restraint box as to the sliding box, accomplishing thus in covering a double door opening (fig. 12a).

[0040] Drawing 13 pictures the choice possibilities the present invention offers to the user and the way that allows him to choose and get three pre-manufactured kits of the present invention of the same height and afterwards to adjust them to three openings of different height.

[0041] Drawing 14 pictures prospectively the kit's cutting way before the placement, where the anti-mosquito system is complete and autonomous and what is missed are only the upper articulated guide, the roll-up spring of the stretched screen and the upper lateral plastic cover of the restraint guide.

[0042] Drawing 15 pictures the step that follows directly after kit's cutting, that is the mounting of the roll-up spring of the stretched screen. The pleated screen does not need a roll-up spring.

[0043] Drawing 16 pictures the step that follows directly, that is the opening of the profile of the restraint box and the upper articulated guide's placement inside it with the upper lateral plastic cover of the restraint guide.

[0044] Drawing 17 pictures the last step for the mounting of the anti-mosquito screen, which is the replacement of the profile of the restraint box.

[0045] Drawing 18 pictures the stabilization accessory of the strap's height placed at the external imaginable section of the restraint box at the lower pulley, as well as the two articulated guides in starting position (18a), in the middle of the way (18b) and in terminal position (18c).

[0046] Drawing 19 pictures the anti-mosquito system when it provides two stabilization accessories of the strap's height placed one at the internal and the other at the external implied section of the box, connected the first to the upper and the second to the lower pulley respectively, as well as the two articulated guides in starting position (19a), in the middle of the way (19b) and in terminal position (19c).

[0047] An example implementing the present invention follows with a detailed description and reference to the attached drawings.

[0048] As depicted in Figures 3, 4 and 8, the two articulated guides, the upper (2) and the lower (3), move inside the metal restraint box (1). Inside the restraint box (1) and along it lies the strap (4), placed vertically and revolved around the two pulleys, the upper (5) and the lower (6), which keep it stretched. The diameters of the two pulleys (5 and 6) are equal. Thus, the two sides of the strap move always parallel to each other. As the strap (4) crosses over the box (1) longwise in the middle of it and in a position parallel to the walls, two implied parallel sections of parallelogram form are created on each side of the strap (4). The internal (19) and the external (20) section. The articulated guides (2 and 3) enter and get out of those sections.

[0049] As depicted in Figures 1, 2, 4, 5, 6, 9, 10 and 11, the special stabilization accessory (8) of the strap's (4) height is connected with its one end to the upper pulley (5). In the same way it could be connected to the lower pulley (6, drawing 18). The accessory (8) is placed vertically to the internal wall of the restraint box (1) and is fixed by two screws (15), inside two grooves/"teeth" (16).

[0050] The accessory's length (8) exceeds always the height of the articulated guide (3), so that the lower articulated guide (3) moves inside the internal (19) section. In that section, the accessory (8) is the point on which the lower (3) articulated guide terminates its sliding (terminal point).

[0051] The accessory (8) enters the restraint box (1) in a sliding way and moves longwise inside the grooves (16, drawings 1, 2, 5 and 9) of the restraint box (1) until it is fixed by two screws (15) on the point that the height of the strap (4) should be, taking into account the kit's final height. At the point where is the accessory (8) and the pulley (5) to its end, there is also the strap's (4) and the lower articulated guide's (3) terminal height. From the point that the stabilization accessory (8) lies (minimum point) and above till the end of the restraint box (1) (maximum point), the user is able to cut the box in the exact height of the frame (drawing 13).

[0052] The two articulated guides, the upper (2) and the lower (3) (drawings 5-7) are fixed on the strap (4) and on two points of its perimeter which are diametrically opposite to each other.

[0053] In particular, the upper guide (2) has on its first or even on its second joint one or two (respectively) additional accessories (7). Those accessories (7) connect the joints with the external surface of the strap (4) to one or two connection points, respectively (9) (drawings 4, 5 and 7). Those accessories (7) have an adequate length, so that the guide (2), as it moves, driven by the strap, not to pull the strap (4) towards it, but to move vertically, parallel to it. Thus, the strap does not converge on the guide, but it keeps its straight, vertical movement.

[0054] Similarly, the lower guide (3) is connected to points of the external surface of the strap (4), to the "back" of the joints (12) that the guide has. The connection is made by screws (13) that connect the first two joints (12) of the lower articulated guide (3) with the external surface of the strap (4) (drawings 4a and 5a). That guide (3) moves also vertically, parallel to the strap (4) and does not pull the strap towards it.

[0055] When the upper (2) and the lower (3) articulated guide are in starting position (figures 4a and 9a), their connection point with the strap (4) lies at the highest and the lowest point of the strap (4), respectively. When they are in the middle of the way (figures 4b and 10a), their connection point with the strap (4) is in the middle of strap's length (4). And when they are at their terminal point (figures 4c and 11a), the connection point of the upper guide (2) with the strap (4) lies at the lowest point of the strap (4) and the connection point of the lower guide (3) with the strap (4) lies at the highest point of the strap (4), leaning at the same time on the stabilization accessory (8). The part of the articulated guides that is inside the box is always vertical, parallel to the strap (drawings 4-13).

[0056] As the strap moves, the lower (3) articulated guide leans with its "back" on the moving strap and follows the same movement with it, without being pulled by the short ropes out of its way. Exact the same happens with the upper articulated guide (2) which is connected with the additional accessories (7) to the strap and thanks to them it is not pulled out of its straight and vertical way. Thus, there is not created any friction between the articulated guides and the strap nor between the articulated guides or between them and the walls.

[0057] The other ends of the articulated guides (2 & 3), the upper end (10) and the lower end (11), are connected to the upper and the lower end of the sliding box respectively (drawings 3 and 8).

[0058] Each time the user pulls the sliding box (14) in order to unroll the screen, at the same time he pulls the articulated guides (2 & 3) out of the restraint box. Then, the strap (4) on which the articulated guides have their end fixed, revolves and allows the articulated guides to move vertically, in a position parallel to each other inside the restraint box (1), with a direction opposite to each other, to get out of the restraint box one from the top and the other from the bottom and thus the screen to be unrolled (17). On the contrary, each time the user pusses the sliding box (14) back to its original position in order to wind up the screen (screen's folding), he pusses at the same time the articulated guides inside the restraint box. Then, the strap revolves from the opposite side this time and leads the articulated guides (2 & 3) inside the restraint box (1) in their original vertical position until the one's end, which is fixed on the strap (4) and moves along with it, reaches and leans on the height regulator accessory (8). Then, the screen has also returned to its original position, it is in other words rolled/wound up.

[0059] The sliding termination of the lower articulated guide (3), when it reaches the accessory (8), stabilises the strap (4) and thus it leads to the sliding termination also of the upper articulated guide (2) which is connected with the other side of the strap.

[0060] Both in starting position (fig. 4a and 9a) and in the middle of the way (fig. 4b and 10a) and in their termination (fig. 4c and 11a), the part of the guides that is inside the box is always vertical and parallel to the box walls and to the two sides of the strap (4) and thus the noise is obliterated.

[0061] The invention applies to all anti-mosquito screens that have a stretched (17) or a pleated screen (18).

[0062] When it is used in mosquito screen with a stretched screen (no 17, drawing 1), it is placed inside the restraint box (1).

[0063] When it is used in mosquito screen with a pleated screen (no 18, drawings 2 and 8), it is placed either inside the restraint box (1) or inside the sliding box (14, figure 11a). It can also be placed at the same time in both boxes (1 and 14, figure 12) and from both sides of the screen, giving thus the possibility to the invention to cover a double door opening (drawing 12a), when the screen is pleated (18).

[0064] In the present invention, the entire mechanism of the mosquito screen stops quite below than in the today's state of the art. The existence of the accessory (8) makes the internal mechanism of the mosquito screen independent from the height of the box in which it lies. Thus, the user can get three pre-manufactured kits of the present invention of the same height and afterwards he can adjust it to three openings of different height (drawing 13).

[0065] The user counts the exact measurements in the placement room, he cuts (drawing 14) the two boxes, the restraint (1) and the sliding (14) ones and the screen in the exact measurements, as well as the lateral guide.

[0066] The user has latitudes to count exactly over the point that the stabilization accessory (8) of the strap's (4) height is (minimum), till 60mm approximately over the accessory (8) (maximum) (drawing 13). He can cut the boxes, restraint (1) and sliding ones (14) with the screen, at any point of that distance between minimum and maximum, in the proper measurements in the placement room.

[0067] Afterwards, he mounts on the spot the roll-up spring (21, drawings 15 and 16) of the stretched screen (17) and the lateral opening of the restraint box profile (1). What follows are the placement of the upper articulated guide (2) and the upper lateral plastic cover (cap) (22) of the restraint guide (drawing 16). Finally, the profile of the restraint box (1) is replaced (drawing 17) and the system is ready to be placed at the opening of the frame.

[0068] The stabilization accessory of the strap's height (8) can be connected to the upper pulley (5), as the figures illustrate, but in the same way it can also be connected to the lower pulley (6, drawing 18). When the accessory (8) is connected with the upper pulley (5), the articulated guide that enters from the bottom terminates on the accessory, whereas when the accessory (8) is connected with the lower pulley (6), on the accessory terminates the articulated guide that enters from the top. That holds true when the accessory is placed either in the internal section (17, drawing 4) of the box or in the external section (18, drawing 18). Finally, the application of the invention is also suitable with a second stabilisation accessory (8, drawing 19) of the strap's height, when the second accessory lies in the other implied section and not in the same with the first accessory and when the second accessory is connected to the opposite pulley and not to the same with which the first accessory is connected.

Claims

1. Anti-mosquito screen system with articulated guides and a strap revolved around two pulleys which is characterized by the fact that it consists of a unified section inside the restrained box (1) or inside the sliding box (14), in which is placed:

i) a strap (4) that crosses over the box longwise (1 or 14), in the middle of it and in a position parallel to the walls, creating on each of its side (4) two implied parallel sections, of a parallelogram form, the internal (19) section and the external (20) section,

ii) a stabilization accessory of the strap's (4) height (8) fixed with one of its end on the pulley (5 or 6) and with the other end onto the internal wall of the box (1 or 14) vertical to it,

iii) two articulated guides, the upper (2) and the lower (3) which, when lie inside the box (1 or 14), are in vertical position, parallel to each other, to the strap's sides (4) and to the walls of the box (1 or 14) inside of which they lie.

iv) means that fix the "back" of the first joint (12) of an articulated guide (2 or 3) on a point of strap's circumference (4) lying next to the one pulley (6),

v) an additional accessory (7) that connects the first joint (12) of the other articulated guide (2 or 3) with a diametrically opposite point of the strap's circumference (4).

2. Anti-mosquito screen system according to Claim 1 which is characterized by the fact that the stabilization accessory of the strap's height (8) can be placed either at the internal (19) or the external (20) section of the box (1 or 14) and by the fact that when the stabilization accessory of the strap's (4) height (8) is connected to the upper (5) pulley of the internal (19) or the external (20) section, terminates on the accessory the articulated guide (3) that enters from the bottom side of the box, whereas in the contrary, when the accessory (8) is connected to the lower pulley (6), terminates on the accessory the articulated guide (2) that enters from the top side of the box.

3. Anti-mosquito screen system according to Claims 1 and 2 which is characterized by the fact that the system can provide a second stabilization accessory of the strap's (4) height (8) lying in the opposite section (19 or 20) than the first accessory (8) and connected to the opposite pulley (5 or 6) than the first accessory (8).

4. Anti-mosquito screen system according to Claims 1 to 3 which is characterized by the fact that the stabilization accessory of the strap's (4) height (8) has always a length bigger than the height of the articulated guide (2 or 3) that terminates on it.

5. Anti-mosquito screen system according to Claims 1 to 4 which is characterized by the fact that the additional accessory (7) that connects the first joint (12) of the articulated guide (2 or 3) with the strap (4) has a length at least equal to the distance between the internal "surface" of the joint of the articulated guide (2) and the strap, so that the movement of the guide, driven by the strap, does not affect the straight, vertical movement of the strap (4).

6. Anti-mosquito screen system according to Claims 1 to 4 which is characterized by the fact that the accessory (8) enters the restraint box (1) in a "sliding" way and moves longwise inside the grooves (16) of the box (1 or 14) until it is fixed by two screws (15), on the point that the height of the strap (4) is desired to be.

7. Anti-mosquito screen system according to Claims 1 to 6 which is characterized by the fact that in mosquito screens with a stretched screen, the system is placed inside the restraint box (1), whereas in mosquito screens with a pleated screen, the system is placed inside the restraint box (1) or alternatively inside the sliding box (14) or at the same time two systems inside the restraint box (1) and also inside the sliding box (14) covering thus a double opening.

8. Anti-mosquito screen system according to Claims 1 to 7 which is characterized by the fact that, apart from the back of the first joint (12) of the articulated guide (2 or 3), the second joint of the guide (3) can also be connected to the strap (4) by the same means.

9. Anti-mosquito screen system according to Claims 1 to 8 which is characterized by the fact that, apart from the first joint (12) of the other articulated guide (2 or 3), the second joint of the guide (2 or 3) can also be connected to the strap (4) by a second additional accessory (7).

Drawing