ES2294259T3 - ROLLING MOSQUITERA FOR FRAMES PROVIDED WITH FOLDING GUIDES. - Google Patents

Abstract

A rolling mosquito net for frames provided with foldaway guides, characterized in that it includes in combination: a mosquito net (12) that can be self-rolled into a suitable lateral, vertically disposed rolling-shutter box (1), and is provided with a stationary upper guide means (4) and a movable lower guide means (11) able to be folded away into a control bar handle (10) operated by the user during the mosquito net rolling step and to project outside of such control bar handle during the mosquito net unrolling step, thus ensuring a correct positioning of the unrolled mosquito net (12) and to reduce the overall dimensions of the guide means when the mosquito net is in its rolled position within box (1). Said foldaway guide means consists essentially of a chain (11) with an end hinged to a stationary support (7) integral with a housing seat (IS) placed at the lower end of the box. <IMAGE>

Description

Roll-up mosquito net for frames equipped with folding guides.

The present invention relates to a roll-up mosquito net provided with guides that fold at the time of open the mosquito net (rolled in the winding box) when It is not in use. A roller screen, having the characteristics of the preamble of claim 1, it is known as EP-A-0 999335.

The roll-up mosquito nets currently known are characterized by left and right guides or upper and lower depending on whether the mosquito net is of the type of vertical or horizontal sliding. Anyway, however, said right or transverse guides are motionless in relation to to the frame so that they are a useless impediment as well as a reduction of the window or door opening, thus obstructing the passage over through the latter.

Another disadvantage of the prior art consists in that such motionless guides are aesthetically unpleasant.

The main object of the present invention is overcome the above problems by providing a mosquito net roller equipped with a guide means that extends when use the mosquito net and folds when it is not in use, thus eliminating the parts that can obstruct or hinder the passage of opening of the frame.

This has been achieved according to the invention. providing a mosquito net that can roll up in a box of convenient rolling shutter, and is provided with a upper immovable guide and a lower mobile guide capable of being folded on a control handle handle operated by the user during the winding step of the mosquito net and to project out of said control bar handle during the unwinding step of the mosquito net, thus ensuring correct placement of the mosquito net unwound.

A better understanding of the invention will result of the following detailed description with reference to the drawings attachments that show only by way of an example two preferred representations

In the drawings:

Figure 1 is a detailed view of the mosquito net according to the invention;

Figure 2 is a vertical section of the mosquito net of Fig. 1 installed in a frame, in position fully unwound;

Figure 3 is a section along the plane "B-B" of Fig. 2;

Figure 4 is a projection view axonometric of the mosquito net of Fig. 2 in which the folding chain;

Figure 5 is an elevation view of the mosquito net placed on a frame, in a fully position rolled in the winding box;

Figure 6 is an axonometric projection view showing the fully wound mosquito net of the
Fig. 5;

Figures 7A-7C are the part top, side, and bottom views of a link in the folding chain, respectively;

Figures 7D-7E are the cut transversal and axonometric projection views of a link chain, respectively;

Figure 8 is a projection view axonometric showing the peripheral "buttons" in detail of the mosquito net that slides inside the folding chain that is hollow to allow said sliding;

Figure 9 is a projection view axonometric folding chain only;

Figure 10 is a sectional view similar to Fig. 2 showing the mosquito net unwound with the buttons inside the chain on the lower side;

Figure 11 is a detailed view of a second representation of the invention, as a whole;

Figure 12 is a projection view axonometric of a detail in relation to the locking system of elastic strike of the chain at the bottom of the handle bar;

Figure 13 is a cross-sectional view. vertical of the lower end of the bar handle of Fig. 12;

Figure 14 is a vertical cross section of the lower end of the bar handle in the fully mounted;

Figure 15 is a projection view axonometric showing the lower end of the box winding together with the first part of the section bar of lower guide and chain link link;

Figure 16 is a front elevation view of a chain link placed on the corresponding bar of lower guide section; Y

Figures 17A, 17B and 17C are the views rear and front axonometric projection facing towards in front of two chain links provided with magnets.

Mosquito nets with the vertically arranged side box, an upper stationary guide and a lower folding guide means are described below. Said mosquito nets slide in the horizontal direction even if the invention can be applied without modifications to the mosquito nets that are rolled / unwound in the direction.
vertical.

Referring to Figures 1 to 10, the Mosquito net according to the present invention essentially includes: a box 1 in which the mosquito net 12 is rolled, two places of IS housing (upper and lower) for the mosquito net placed at both ends of the box, a stationary upper guide 4 connected to the upper accommodation place ES, a handle bar of 10 that is in the sliding connection with said folding guide means consisting essentially on a chain 11 having an end that is attached to an integral support 7 with the lower housing place as well as an embedded section bar 8 of the bar handle 10 that is fixed next to the opposite frame of the box 1 to lock the handle of bar in the (unwound) position of use of the mosquito net.

As can be easily deduced from the figures, during the unwind movement of the mosquito net self-winding 12, chain 11 comes out of bar handle 10 (which is moves away from the box 1) and stretches on the bottom side of the frame over a stationary section of bar 6 of small thickness which is a place fixed that prevents any diagonal movement of the chain 11 which directs mosquito net 12 from the bottom side. So the chain 11 does not undergo any orthogonal change in the mosquito net 12 which is then free of the supposed "candle effect" which, as it is known, occurs in the presence of wind.

To this end, it should be appreciated that according to a peculiar feature of the invention, the upper edge of the mosquito net 12 slides on the upper immovable guide 4, and its lower edge is slides on chain 11, the links of which are hollow and are provided with a longitudinal upper groove 11A to allow said sliding (Figs 7A-7E and 9).

In the first representation described, the mosquito net 12 is preferably provided with a peripheral edge semi-rigid rubber or plastic or 12A frame that is able to keep the mosquito net tense and prevent the formation of wrinkles (Fig. 8) during sliding and when the mosquito net It is in the unwound position. For this purpose, "buttons" 15 fixed to peripheral edge 12A are located on the upper and lower sides of the mosquito net and are capable of sliding on the upper immovable guide 4 and the hollow chain 11, respectively, thus preventing the mosquito net from freeing itself from she.

Figure 2 shows the bottom of the bar handle 10 carrying an angle member 13 that directs the chain links 11 from the vertical position (mosquito net rolled up) to the horizontal position (unwound mosquito net) and vice versa. Said guide angle member 13 is connected to the place 14 for chain 11 inside bar handle 10 (Fig. 3). The peripheral edge 12A is locked with its vertical side at a convenient housing placed on the bar handle 10.

Advantageously, as shown in Figures 5 and 6, the mosquito net is completely rolled up in its box 1, the frame opening is much freer than that of the frames on which the current roller nets are installed.

In the representations described said box 1 it is provided by a spring winding system 2 of type known as the end brackets 5 for closing the framework in which the relative superior accommodation places e Lower IS are embedded. The supports 5 are closed by 3 convenient plugs also acting as places of roller end housing self-rolling

Finally, the bar handle 10 is attached to the section bar embedded 8 preferably by a magnetic tape placed both inside the embedded section bar as on the bar handle.

It should be noted that the invention is in particular (even if not exclusively) useful in those cases in which the frames are installed in places frequented by disabled people on a wheelchair In fact the lower stationary section bar 6 which has rounded edges and a thickness of preferably approximately 3 mm does not obstruct the wheels of the chairs of wheels. The guides or section bars that are usually they provide in current mosquito nets are instead a obstacle to the free movement of a wheelchair, thus limiting any free movement of the disabled.

In case in which frame has a very opening large so that it is advisable to place two mosquito nets of the type described above in opposition to each other, it is not placed from then the embedded section bar 8 because in this case the two handle bars 10 are connected to each other.

As an alternative to the magnetic organ mentioned above, it is also possible to provide a means of mechanical adjustment of the known type.

Although the mosquito net described above fully achieve the predetermined objectives, it should be noted that in case of gusts of wind the folding chain described previously it can ever be lifted by chance because the supposed "candle effect" of the mosquito net as the previously mentioned guide section of small thickness 6 placed on the floor as described before, even if it prevents chain side movements, does not hinder movements also having a vertical component that is caused by example, by lifting the chain from the ground only due to the "candle effect".

In addition, the first representation of the invention described above has no position intermediate opening: in other words, the mosquito net can only be installed in a fully rolled position or completely unwound, which can be difficult in case of very large frames in which two mosquito nets are provided self-winding that oppose each other.

In that case, to pass through the opening of the frame is necessary to at least pick up a part of the mosquito net with one hand and retain another part of the mosquito net with the another hand what otherwise I would tend to pick up suddenly due to the lack of reciprocal connection of the two parts of the Mosquito nets with possible damage.

A second representation of the invention shown in Figures 11 to 17C provides a locking means additional chain in the perpendicular direction of the chain that remains flat as well as a means to keep the mosquito net also in a partially unwound position.

In particular, this second representation includes a mosquito net of the type described above which more It is also provided with:

- a magnetic means to join the links of the chain to the lower guide section bar;

- a means of connecting elastic blow for automatically keep the screen in a position partially unwound; Y

- a sliding adjustment means for direct and keep the ends of the operating bar handle instead.

The latter is able to prevent the end bottom of the bar handle that slides along the bar lower guide section exits said section bar which is necessarily of very little thickness so as not to be an obstacle to people, even those disabled on wheelchairs, who pass to through the opening of the frame on which the mosquito net is installed.

With reference to Figures 11 to 17C, according to a first peculiar feature of said second representation of the invention, the folding chain 11 is provided by a means magnetic M capable of cooperating with a guide bar section stationary 6 on the floor of small thickness which is or of material ferromagnetic or is provided by an FM longitudinal strip of said material so that the magnets M of the chain 11 can be attracted so magnetically.

Thus, according to the invention, MC links of the chain 11 that retain the mosquito net 12 are kept in their positions not only according to a horizontal direction diagonal to the chain, but also according to the vertical direction.

These M magnets are placed in all or some MC links of chain 11 and are located adjacent to the bottom wall thereof that is parallel to the section bar guide 6.

In addition, the representation described stipulates that the guide bar section 6 has a cutting section cross-shaped pigeon tail able to cooperate with the lower end 10 'of the bar handle 10 to prevent accidental "derailments" of the bar handle occur during the opening or closing of the mosquito net. Lower end 10 'of the bar handle of course has a shape conjugated with the guide bar section 6.

It is however evident that said variation of The lower guide section bar can also be applied as the first representation considering that the party Bottom of the bar handle has the features described previously.

Finally, according to another feature of the invention, a preferably wedged EC member that is automatically embedded between two adjacent links MC in the angle member of guide 13 already described to block the chain in any intermediate position between the full opening or the closing of the mosquito net with the same degree of inclination as the chain.

Advantageously, to move the bar handle 10 unwinding or picking up the mosquito net 12, the user only should "overcome" the resistance of said EC blocking member between two contiguous links that remain in that position yielding the elastic medium properly.

In other words, to unwind or pick up the mosquito net 12, it is necessary to move the bar handle 10 to overcome the resistance of said EC member that snapped together between two adjacent MC links by preferably a spring helical S and is generally shaped like a truncated pyramid of so that due to the movement of the bar handle the appropriate member CE embedded between links MC interferes with its walls leaning against the beveled edge of the bottom wall I of a link, thus generating a push that tends to move it away from the chain against the elastic thrust of the spring S.

It should be appreciated that in the second described representation representations of M magnets are distributed along chain 11 and not over guide bar section 6 to avoid excessive accumulation of dirt and particles metallic that could be attracted by magnets M. In fact, if these last could be placed in the guide bar section motionless 6 on the ground, would quickly result in the obstruction of the same unless it is cleaned frequently.

Finally, the stationary support 7 is preferably formed as half chain link for ensure maximum fluidity and smooth movement of extraction of and the new insertion of the chain in the handle of bar.

The present invention has been described according to two preferred representations, however, it should be understood that several modifications and / or variations can be made without leaving of the scope of the claims.

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References cited in the description

This list of references cited by the Applicant is for the convenience of the reader only. This does not It is part of the European patent document. Even though I know have taken great care in compiling references, errors or omissions cannot be excluded and the EPO denies All responsibility in this regard.

Patent documents cited in the description

EP 0999335 A [0001]

Claims (21)

1. Rolling mosquito net device comprising, in combination: A mosquito net (12), fixed upper guide means (4) and moving lower guide means, in which said mosquito net (12) can be self-wound in an appropriate side roller shutter box arranged vertically (1) and in which said lower guide means are adapted to be folded into a guide bar handle (10) operated by the user during the winding phase of the mosquito net and to project outside of said guide bar handle in the course of the unwind phase of the mosquito net, thus guaranteeing a correct positioning of the unwound mosquito net (12) and allowing to reduce the overall dimensions of the guide means when the mosquito net is in position wound inside said box (1), characterized in that said retractable lower guide means comprise a chain (11) provided with magnetic means (M) capable of functioning properly ionize with a bar of fixed guide section (6) on the ground with a small thickness that is made of a ferromagnetic material, a longitudinal band (FM) of said material is present so that the magnets (M) of the chain (11) can be magnetically attracted in that way even if the links (MC) of the chain (11) that retain the mosquito net (12) are held in their positions not only according to a horizontal direction perpendicular to the chain but also according to the vertical direction . 2. The roller mosquito net device according to the preceding claim, characterized in that said chain (11) is articulated at one end on a fixed support (7) incorporated into a housing (IS) located at the level of the lower end of the box. 3. Rolling mosquito net device according to the preceding claim, characterized in that in the course of the unwinding movement of the self-winding mosquito net (12), the chain (11) leaves the bar handle (10) that moves away from the box ( 1) and extends to the level of the lower side of the frame on a bar of adapted fixed section (6) with a small thickness that is a fixed place preventing any transverse offset of the chain (11) that directs the mosquito net (12) from the lower side, thus allowing to obtain that the chain (11) does not suffer any orthogonal lag in relation to the plane of the mosquito net (12) which is then released from the "candle effect" so called
I swim. 4. Roller mosquito net device according to any one of claims from claim 2, characterized in that the upper edge of the mosquito net (12) slides along the fixed upper guide (4) and because its lower edge slides in the chain (11), whose links are hollow and are provided by an upper longitudinal groove (11 A) to allow said sliding. 5. Roller mosquito net device according to the preceding claim, characterized in that the mosquito net (12) is provided with an edge or a peripheral semi-rigid plastic or rubber frame (12A) that is capable of keeping the mosquito net taut and preventing the formation of folds in the course of sliding and when the mosquito net is in the unwound position. 6. Rolling mosquito net device according to the preceding claim, characterized in that an angle element (13) that directs the chain links (11) from the vertical position (rolled mosquito net) is located at the bottom of the bar handle (10). to the horizontal position (unwound mosquito net) and vice versa, said guide angle element (13) is connected to a place (14) for the chain (11) inside the bar handle (10). 7. Rolling mosquito net device according to claims 5 or 6, characterized in that buttons (15) fixed on the peripheral edge (12A) are located at the level of the upper and lower sides of the mosquito net (12) and are capable of sliding in the fixed upper guide (4) and the hollow chain (11), respectively, thus preventing the mosquito net from leaving. 8. The roll-up mosquito net device according to claim 5, characterized in that the peripheral semi-rigid edge (12A) of the mosquito net is locked with its vertical side opposite to the box (1) in an adapted housing arranged in the bar handle (10). 9. Rolling mosquito net device according to any one of the preceding claims, characterized in that said box (1) is provided with a spring winding system (2) of known type as well as end brackets (5) for fixing to the frame in which the upper and lower relative accommodation places (IS) are adapted, the supports (5) that are closed by adapted wedges (3) which also act as places for the ends of the self-winding roller. 10. Rolling mosquito net device according to any one of the preceding claims, characterized in that an adjustment section bar (8) of the bar handle (10) is provided which is fixed on the side of the frame opposite the box (1) for lock the bar handle in the (unwound) position of using the mosquito net. 11. The roller mosquito net device according to the preceding claim, characterized in that the bar handle (10) is removably fixed on the adjustment section bar (8) by a magnetic strip arranged at the same time inside the sectional bar adjustment and bar handle. 12. Roller mosquito net device according to any one of claims 1 to 9, characterized in that said bar handle (10) is linked to a second bar handle of another specular roller mosquito net for installation with two opposite mosquito nets similar to a mirror, said bar handle is provided with magnetic means that cooperate with those of the second bar handle in order to make a reciprocal connection. 13. Roller mosquito net device according to any one of claims from claim 10, characterized in that instead of said means or magnetic strips there is provided a means of mechanical adjustment of the known type. 14. The roller mosquito net device according to claim 3, characterized in that said lower section bar (6) has rounded edges and a thickness of about 3 mm so that any obstacle to the wheelchairs wheels of disabled or similar persons is avoided and that it is also possible for the latter to pass freely through the frames provided with said mosquito nets. 15. A roll-up mosquito net device according to claim 1, characterized in that it also includes magnetic means (M) for linking said lower moving guide means to a lower guide section bar (6), spring-loaded elastic means for automatically retaining the mosquito net in a partially unwound position and adjustment means that can slide to direct and retain the spring ends of the operating bar handle in place. 16. Mosquito net device according to the preceding claim, characterized in that said retractable guide means consist substantially of a chain (11) having an end that is articulated on a fixed support (7) integrated in the lower housing (IS). located at the level of the lower end of the box. 17. Mosquito net device according to the preceding claim, characterized in that said magnets (M) are arranged in all or certain links (MC) of the chain (11) and are located next to its lower wall that is parallel to the bar of guide section (6). 18. Mosquito net device according to claim 14, characterized in that said guide section bar (6) has a pigeon tail shaped cross section capable of cooperating with the lower end (10 ') of the bar handle (10) for prevent accidental "derailments" of the bar handle from taking place during the opening or closing of the mosquito net, said lower end (10 ') of the bar handle has a shape that is combined with the guide section bar (6). 19. Mosquito net device according to any one of claims 15 to 18, characterized in that an angle element (13) that directs the chain links (11) from the vertical position (rolled mosquito net) to the horizontal position (unwound mosquito net) and vice versa it is arranged in the lower part of the bar handle (10), said angle guide element (13) is preferably provided with a wedge-shaped element (EC) that snaps into place and automatically between two adjacent links (MC) to lock the chain in any intermediate position between the complete opening or closing of the mosquito net with the same "step" as the chain so that to move the bar handle (10) by unrolling or rewinding the mosquito net (12), the user must only "overcome" the resistance of said blocking element (EC) between two adjacent links that are held in said position by conveniently flexible elastic means ibles. 20. Roll-up mosquito net device according to the preceding claim, characterized in that said element that is snapped (EC) and which is pressed between two adjacent links (MC) by a preferably helical spring (S) generally has the shape of a truncated pyramid so that due to the movement of the bar handle (10) the adjustment element (EC) interlocked between links (MC) interferes with its inclined walls against the beveled edge of the bottom wall (I) of a link, thus generating a thrust tending to move it away from the chain against the elastic spring thrust (S). 21. Mosquito net device according to the preceding claim, characterized in that the fixed support (7) is formed as a semi-link of the chain to guarantee maximum fluidity and regularity of the extraction movement from, and the reinsertion of the chain on the bar handle.