MOSQUITO NET WITH CONTROLLED RETAINING DEVICES OF THE PROTECTIVE NET

Abstract

MOSQUITO NET WITH CONTROLLED RETAINING DEVICES FOR THE PROTECTIVE NET.The invention relates to a mosquito net (1) with devices for controlled retention of the protective net, with vertical or horizontal sliding, comprising at least one box (2) to which a winding roller is rotatably constrained comprising a longitudinal slot through which a protective net (3) is slidable with one end constrained to the winding roller and with the opposite end to a handle bar (4) sliding relative to at least one sliding guide (5, 5', 5") provided with a guide slot (51, 51', 51") through which a free edge (31, 32) of the protective net (3) is slidable, wherein the protective net (3), at least at a free edge, is without finishes and wherein at least a part of at least one free edge of the protective net (3) is retained by the bristles (82, 92) of at least one first holding brush (8) and at least one second holding brush (9) opposite. Figure for the abstract: Fig. 2.

Description

Title of the invention: MOSQUITO NET WITH DEVICES FOR CONTROLLED RETENTION OF THE PROTECTIVE NET

[0001] The present innovation relates to a mosquito net with devices for controlled retention of the protective net.

[0002] The innovation has a particular, although not exclusive, application in the industrial sector for the production and marketing of mosquito nets and broadly of systems for protecting the openings of buildings in order to prevent the penetration of insects, said mosquito nets or protection systems being able to be of the vertical sliding type as well as horizontal, the innovation being able to have a general application also in the industry of the production and marketing of barrier components and accessories for joinery.

[0003] Known and widespread are the barriers placed at the openings of buildings made in such a way as to allow said openings of these buildings to be equipped with a protective assembly of the type of net with suitably tight meshes capable of preventing the penetration of insects into the inhabited spaces. Among the traditional mosquito net solutions, some are defined as the custom-made type because they are supplied directly by the producer to the installer on the basis of design specifications provided to the producer by the customer. As alternatives to custom-made mosquito net solutions, mosquito net solutions of the type designed to be installed without the need for a professional installer are also known, these types of mosquito nets are generally known as mosquito net solutions of the mounting kit type because they are made to allow their installation even by non-expert users.In their basic structure, current mosquito nets have common elements which consist of producing a mosquito net provided with at least one box inside which is housed a winding roller which is coaxial therewith, this winding roller engages one end of a tight-meshed protective net so as to be able to be a barrier for insects and where said protective net has the end opposite that engaged with the winding roller, constrained to a handle bar which can be moved in a guided manner to allow the deployment or rewinding of the protective net around the winding roller.Furthermore, the basic structure of a mosquito net, at least with vertical sliding, also includes suitable guide posts which are anchored to the jambs of the architectural opening, said guide posts being made in order to allow the guidance of the handle bar and the protective net in its downward and upward movements. It is known. also horizontal sliding mosquito net solutions which adapt the construction scheme of vertical sliding mosquito nets by being provided with a box fitted with a winding roller to which one end of the protective net is associated, the latter being associated with the other end to a handle bar, the positioning of the box being close to a jamb of the architectural opening to be equipped with the mosquito net and the movement of the protective net being guided by a horizontal guide rail and by a net guide chain.Generally, in both vertically sliding and horizontally sliding mosquito net solutions, the winding roller is provided with a device, of a known type, that facilitates the movement of the protective net, for example said device for facilitating the rewinding of the protective net being constituted by a spring that is preloaded in unwinding of the protective net itself. Furthermore, in vertically actuated mosquito net structures, the box is generally provided at the ends with suitable heads that can be of the fixed or adjustable type in order to allow easier adaptation for engagement with the architectural opening of the building.

[0004] A necessity that concerns mosquito net structures is that of preventing the protective net from being able to disengage and come out of its guide housings. In order to avoid or at least reduce the risk of the protective net being disengaged, the technical means traditionally used is to equip the protective net itself with suitable and known holding devices secured in position close to the ends of the protective net, these holding devices being sliding inside the guide uprights, being made in such a way as not to allow their disengagement from the respective guide housings.Although the said traditional solution is functional in preventing the safety net from coming out of its guides, it has the disadvantage of the possibility that in the event of excessively high pressure being exerted on the safety net, it may tear at the level of the said holding devices which are made in such a way as not to be able to disengage from the guide uprights, thereby exposing the safety net to the risk of breaking or, in the event of the holding devices coming out of the guide uprights, in any case affecting the movement of the safety net with the need to restore its sliding by means of its correct reinserting into the sliding guides.There are currently many known solutions that aim, in different ways, to meet the need to retain the protective net and inside the sliding and guiding housings in such a way as to at least oppose the possibility of its exit following any abnormal thrust possibly imparted on the protective net. Some mosquito net solutions are known that are provided with a windproof brush that adequately engages the protective net. the mosquito net by opposing its exit from the guides, where current solutions which include the provision of a windbreak brush are structured so that the latter, while being able to engage the protective net, is in a fixed position, thus not allowing optimal opposition to the movements of the latter exiting the guides.

[0005] In the current patent literature it is also possible to identify some solutions for mosquito net structures which also include devices to oppose the disengagement of the protective net from the sliding guides, among which, as a simple example, the following are mentioned:

[0006] D1 n. TV69A000111 (Bettio)

[0007] Disadvantages

[0008] All known solutions of mosquito net systems of the prior art have defects and limitations which lead to significant disadvantages.

[0009] A first drawback, in the applicant's opinion, which is considered to characterize all known solutions for mosquito nets provided with devices for retaining the protective net, refers to the fact that current mosquito net solutions do not allow optimal retention of the free edges of the protective net, furthermore not allowing effective opposition to be implemented to the thrust forces which may act on the protective net tending to cause the free edges thereof to come out of the guides.

[0010] A second drawback, in the applicant's opinion, which is considered to characterize all known solutions of mosquito nets provided with devices for retaining the protective net, refers to the fact that current solutions of mosquito nets, especially if they are provided with devices for retaining the protective net such as windproof buttons, do not make it possible to avoid the possibility that the opposition operated by these to the exit of the free edges of the protective net from the guides could cause the laceration of the protective net itself, in the case where the pushing action on the protective net exceeds a certain degree of intensity.

[0011] A third drawback, in the applicant's opinion, which is considered to characterize all known solutions for mosquito nets provided with devices for retaining the protective net, refers to the fact that current mosquito net solutions do not allow the retention of the free edges of the protective net to be modulated according to the stresses imposed on it.

[0012] Another disadvantage, in the applicant's opinion, which is considered to characterize all known solutions of mosquito nets provided with devices for retaining the protective net, refers to the fact that current mosquito net solutions do not allow optimal retention of the free edges of the protective net also depending on the stresses undergone by the protective net under the effect of thrust forces acting on it nor, in the event of the exit of the free edges of the protective net guides, to easily restore the positioning of the protective net and a functional operation of rolling and unrolling it.

[0013] Another disadvantage, in the applicant's opinion, which is considered to characterize all known solutions of mosquito nets provided with devices for retaining the protective net, refers to the fact that current solutions of mosquito nets which include finishes of the free edges of the protective net so as to oppose their exit from the guides and in particular the solutions which include windproof buttons, by increasing the thickness of the edges of the protective net, limit the measurement of the length of the protective net that can be housed inside the box and, consequently, the measurement of the length of the protective net of the mosquito net.

[0014] Overall, from these introductory considerations, it appears that the identification of alternative solutions is certainly essential.

[0015] The present innovation also aims to remedy the aforementioned drawbacks.

[0016] BRIEF DESCRIPTION OF THE INVENTION

[0017] This and other objects are achieved with the present innovation according to the features detailed in the appended claims which solve the problems exposed by means of a mosquito net with devices for controlled retention of the protective net, with vertical or horizontal sliding, comprising at least one box to which a winding roller is constrained in a rotating manner comprising a longitudinal slot through which a protective net is slidable with one end constrained to the winding roller and with the end opposite the handle bar sliding relative to at least one sliding guide provided with a guide slot through which a free edge of the protective net is slidable, where the protective net, at least at a free edge,is without finishes and where at least a part of at least one free edge of the protective net is retained by the bristles of at least one first retaining brush and at least one second opposite retaining brush.

[0018] According to another particularly advantageous characteristic of the invention, at least one sliding guide of the mosquito net is provided with at least one first retaining housing and at least one second retaining housing opposite each other, which are thus located on opposite sides of the guide slot, where both the first retaining housing and the second retaining housing are made to be semi-circular with an open portion oriented towards the free edge of the protective net, said constraining retaining housings retaining, with the possibility of half-rotational movements, at least the retaining base of which both the first holding brush and the second holding brush are provided.

[0019] According to another particularly advantageous characteristic of the invention, the mosquito net is of the type with horizontal sliding of the protective net and comprises at least one net guide chain whose modules are provided with at least one sliding slot and a cavity inside which there are at least one first engagement housing and at least one second engagement housing facing each other which are thus located on opposite sides of the sliding slot, where the first engagement housing as well as the second engagement housing are made so as to be semi-circular with an open portion oriented towards the free edge of the protective net, said engagement housings constraining, with the possibility of half-rotation movements, at least the retaining base with which the first holding brush as well as the second holding brush are provided.

[0020] Objectives and advantages

[0021] In this way, thanks to the remarkable creative contribution whose effect constitutes an immediate technical progress, numerous advantages are obtained.

[0022] A first advantageous aim characterizing the mosquito net with devices for controlled retention of the protective net according to the present invention is that of allowing optimal retention of the free edges of the protective net, further allowing effective opposition to the thrust forces which can act on the protective net.

[0023] A second advantageous aim characterizing the mosquito net with devices for controlled retention of the protective net according to the present invention is to make it possible to solve the problems of the known solutions, making it possible to avoid the resistance opposed by the devices for maintaining the free edges of the protective net from leading to the possibility of tearing the protective net itself.

[0024] A third advantageous aim characterizing the mosquito net with devices for controlled retention of the protective net according to the present invention is to allow the retention of the free edges of the protective net to be modulated as a function of the stresses imposed on the protective net itself.

[0025] Another advantageous aim characterizing the mosquito net with controlled retaining devices of the protective net according to the present invention is that of allowing optimal retention of the free edges of the protective net also as a function of the stresses undergone by the protective net under the effect of the thrust forces acting on it as well as, in the event of the free edges of the protective net coming out of the guides, of easily restoring the positioning of the protective net and a functional operation of winding and unwinding thereof.

[0026] Another advantageous aim characterizing the mosquito net with devices for controlled retention of the protective net according to the present invention is that of making it possible to overcome the drawbacks of the known solutions where the free edges of the protective net are provided with windproof finishes so as, compared to said solutions, to reduce the thickness of the free edges of the protective net allowing a longer protective net to be housed in the same space of the box.

[0027] These and other advantages will emerge from the following detailed description of certain preferred embodiment solutions with the aid of the attached schematic drawings, the execution details of which should not be considered as limiting but simply as examples.

[0028] CONTENT OF THE DRAWINGS

[0029] [Fig.l] illustrates an overall axonometric view of the mosquito net with devices for controlled retention of the protective net according to the innovation which is the subject of the present invention, in the vertical sliding assembly;

[0030] [Fig.2] shows an orthogonal sectional view of the vertical sliding guides of the mosquito net with devices for controlled retention of the protective net according to the innovation which is the subject of the present invention with vertical sliding in a condition of minimum engagement of the free edges of the protective net;

[0031] [Fig.3] illustrates an orthogonal sectional view of the vertical sliding guides of the mosquito net with controlled retention devices of the protective net according to the innovation which is the subject of the present invention with vertical sliding in a condition where the protective net is stressed in thrust;

[0032] [Fig.4] illustrates an overall axonometric sectional view of the mosquito net with devices for controlled retention of the protective net according to the innovation which is the subject of the present invention, in the horizontal sliding assembly;

[0033] [Fig.5] illustrates an orthogonal sectional view of the horizontal sliding guide and the mosquito net guide chain with devices for controlled retention of the protective net according to the innovation which is the subject of the present invention with horizontal sliding in a condition of minimum engagement of the free edges of the protective net;

[0034] [Fig.6] illustrates an orthogonal sectional view of the horizontal sliding guide and the mosquito net guide chain with devices for controlled retention of the protective net according to the innovation which is the subject of the present invention with horizontal sliding in a condition where the protective net is pushed.

[0035] PRACTICAL EMBODIMENT OF THE INVENTION

[0036] Referring also to the representations of Figures 1 to 6, a mosquito net (1) is described with devices for controlled retention of the protective net where, as shown in particular in [Fig.l] and in [Fig.4], said figures representing, in general view, two possible structures of mosquito net (1) according to the innovation which is the subject of the present invention, where the mosquito net (1) of [Fig.l] implements a mosquito net (1) with vertical sliding while the mosquito net (1) of [Fig.4] implements a mosquito net with horizontal sliding. The mosquito net (1) of [Fig.l] is of the vertical sliding type, in its basic structure, being at least provided with a box (2) of a known type which, in the example of [Fig.l], is positioned horizontally in accordance with the fact that said mosquito net structure (1) is of the vertical sliding type, where said box (2) functionally constrains inside it a rotating winding roller (not shown) of a known type and made in a known manner to engage in winding and unwinding a protective net (3) sliding along a vertical axis through a longitudinal slot with which the box (2) is provided. The protective net (3), in order to allow its winding and unwinding, is constrained by one end to the winding roller around which it is wound and then unwound, exiting from the bottom of the box (2) through the longitudinal slot with which the box (2) itself is provided.In order to facilitate the winding and / or unwinding of the protective net (3), the winding roller may be provided with loading spring devices and / or tensioning devices of known type in order to obtain adequate tension of the protective net (3) during the winding and / or unwinding operation thereof. Furthermore, in order to allow the movement of the protective net (3) itself, the mosquito net is provided with a handle bar (4) of known type to which the end of the protective net (3) is engaged where, in the example of mosquito net (1) of [Fig.l], with vertical sliding, the handle bar (4) is horizontal.

[0037] Also to allow the functional unwinding and rolling up of the protective net (3), the mosquito net (1) is made so as to comprise a pair of vertical sliding guides (5, 5') of known type, in operating condition, said sliding guides (5, 5') being positioned below relative to the box (2) and perpendicular to it, the sliding guides (5, 5') being arranged reciprocally in a specular manner, these being themselves engaged to the jambs of the architectural opening of the building, while the box (2) is engaged to the lintel. Said sliding guides (5, 5'), in a known manner, are suitably provided with a longitudinal guide slot (51, 51'), where the first free edge (31) and the second free edge (32) of the protective net (3) are slidable inside the respective guide slot (51, 51') of the respective sliding guides (5, 5').Furthermore, without affecting the innovation solution, there is the possibility that the mosquito net (1), of the sliding structuring scheme. vertical of the example of [Fig.l], can be provided with other devices of a known type or structured with other functionally known technical means.

[0038] Alternatively, the solution of the innovation which is the subject of the present invention could also be applied in a mosquito net (1) according to the example diagram of [Fig. 4], which illustrates a horizontally sliding mosquito net (1) whose structure is of the known type comprising a box (2) which is positioned vertically being intended to be engaged to a jamb of the architectural opening of the building, architectural opening which is itself provided with the mosquito net (1). Said box (2), in a known manner, is provided with a longitudinal slot through which the protective net (3) passes during its rolling and unrolling to the winding roller which has its functional positioning inside the box (2), the protective net (3), through the longitudinal slot, exiting laterally from the box (2). In the configuration of the example of [Fig.4] also the winding roller of the mosquito net (1), in order to facilitate the winding and / or unwinding operations can be provided with devices with loading spring and / or tensioning devices of known type through which the protective net (3) is suitably kept in tension during the winding and / or unwinding operations thereof. In order to allow the guided deployment of the protective net (3), as illustrated in the representation of [Fig.4] of the embodiment that is described, in operating condition, the mosquito net (1) comprises a horizontal sliding guide (5") which is joined orthogonally to the box (2) at the upper end thereof, generally said horizontal sliding guide (5"), in operating condition, being associated with an engagement rail (6) anchored to the lintel of the architectural opening for positioning the mosquito net (1).A vertical handle bar (4) is movable longitudinally sliding in a guided manner along said horizontal sliding guide (5"), handle bar which with the upper end (41) is constrained perpendicular to said sliding guide (5") so as to be longitudinally sliding in a guided manner relative thereto.

[0039] Furthermore, in the example of [Fig.4], the mosquito net (1), at the lower end of the box (2), engages a first end of the net guide chain (7), of known type, which is itself composed of a series of modules (71), of known type, provided with a sliding slot (711) connected to a cavity (712), said modules (71) being mutually hinged, where the length of the net guide chain (7) is adapted to the length of the architectural opening which is provided with the mosquito net (1). In a known manner, the second end of the net guide chain (7), opposite said first end, slides in a controlled manner vertically inside the handle bar (4'), the latter being substantially hollow, penetrating at level of the base (42') and then being guided vertically. In a known manner, taking into account the constraint of the protective net (3) respectively to the handle bar (4) and to the winding roller of the box (2), the horizontal movement in one of the two directions of the handle bar (4) involves the simultaneous winding or unwinding of the protective net (3) and the sliding of the net guide chain (7) inside the handle bar (4) by means of a known drive device of the net guide chain (7) itself.In this way, during the relaxation movements and vice versa of the protective net (3) following the movement of the handle bar (4), the function of the net guide chain (7) is carried out by retaining and guiding, during its relaxation, the first free edge (31), lower, of the protective net (3) and the second free edge (32), upper, of the protective net (3) is sliding inside the upper sliding guide (5 "), where by first free edge (31) and by second free edge (32) of the protective net (3) are indicated the edges of the protective net (3) opposite to those which are engaged respectively to the internal winding roller of the box (2) and to the handle bar (4).

[0040] In an innovative manner, the protective net (3) of the mosquito net (1), in the configuration of the example of [Fig.l], with vertical sliding, as well as in the configuration of the example of [Fig.4], with horizontal sliding, is made so that the free edges (31, 32) of the protective net (3) are without lateral finishes of known type such as, purely by way of example, can be the windproof buttons which are generally engaged equidistant along the development of the free edges (31, 32) of the protective net (3) and act as devices capable of maintaining said free edges (31, 32) of the protective net (3) to which they are associated inside the corresponding sliding guides (5, 5' 5") with which the mosquito net (1) is provided.According to the innovation which is the subject of the present invention, the protective net (3) of the mosquito net (1), at least at the level of the areas of the free edges (31, 32) of the protective net (3) itself, is without devices or finishes of known type likely to prevent or at least to oppose the exit of the free edge (31, 32) of the protective net (3) from the guide slots (51, 51', 51") at least from the sliding guides (5, 5', 5"). In this way, in the solution that is the subject of the present invention, there is a uniformity of structure of the protective net (3) between the area of the free edges (31, 32) thereof and the remaining area delimited between said free edges (31, 32) and the ends of the protective net (3) in engagement with the winding roller of the box (2) and with the handle bar (4) so that the holes of the meshes of the protective net (3) of the free edges (31, 32) thereof are free.

[0041] In more detail of the object of the present invention, in order to allow the functional sliding of the free edges (31, 32) of the protective net (3) at least inside of the guide slot (51, 51', 51") of the sliding guide (5, 5', 5") of the mosquito net (1) and, in the case where the mosquito net (1) would be horizontally sliding as in the example of [Fig.4], also inside the sliding slot (711) of the modules (71) of the net guide chain (7), as well as the appropriate retention thereof, the meshes of the protective net (3) which constitute at least the area affected by the sliding inside the guide slot (51, 51', 51") of the sliding guides (5, 5', 5") or of the sliding slot (711) of the modules (71) of the net guide chain (7) must have their holes free so as to be able to be engaged by the bristles (82, 92) of the holding brushes (8, 9) whose sliding guides (5, 5', 5") and, in the case of a horizontally sliding mosquito net (1), the modules (71) of the net guide chain (7) are provided.In even more detail of the embodiment which is described, as illustrated particularly in [Fig.l] and in figures 2 and 3, which illustrate an example of a mosquito net (1) according to the innovation which is the subject of the present invention in a vertical sliding configuration, as illustrated particularly in [Fig.2] and in [Fig.3], the first vertical sliding guide (5) as well as the second vertical sliding guide (5') are mirror-opposite to each other, preferably being made of metal profiles, each of the sliding guides (5, 5') for functional purposes and in a known manner comprises a guide slot (51, 51'), the opening of which has a measurement preferably between 3 mm and 4 mm, through the guide slot (51, 51') the protective net (3) is slidable whose respective free edge (31, 32) slides inside the corresponding hollow housing (52, 52') with which the sliding guides (5, 5') are provided.

[0042] In an innovative manner, according to the object of the present invention, in order to properly retain the protective net (3) in position with the free edges (31, 32) without lateral finishes, the first vertical sliding guide (5) as well as the second vertical sliding guide (5') are each provided, inside the hollow housing (52, 52'), with at least one first retaining housing (53, 53') and at least one second retaining housing (54, 54'), reciprocally opposite because located at the opposite sides of the guide slot (51, 51'), where said retaining housings (53, 53', 54, 54') can be of the continuous or discontinuous type. In more detail of the embodiment which is described, as particularly shown in [Fig.2], both the first retaining housing (53, 53') and the second retaining housing (54, 54') are made to be semi-circular with an open portion oriented towards the free edge (31, 32) of the protective net (3). In more detail, in order to allow the protective net (3) to be properly held in place, each sliding guide (5, 5') is provided with at least one first retaining brush (8) and at least one second retaining brush (9), each of the bristle type (82, 92), where, . in the embodiment described in [Fig.2], the first holding brush (8) is constrained by the first retaining housing (53, 53') and the second holding brush (9) is constrained by the second retaining housing (54, 54'), so that the first holding brush (8) is opposite the second holding brush (9). The first holding brush (8) comprises a retaining base (81) such that it is compatible with the constraint, also in half rotation, to the first retaining housing (53, 53'), from said retaining base (81) also come out the bristles (82) with which said first holding brush (8) is provided. Likewise, the second holding brush (9) also comprises a retaining base (91) shaped so as to be compatible with the constraint, also in half-rotation, to the second retaining housing (54, 54'), from said retaining base (91) the bristles (92) with which said second holding brush (9) is provided come out.In more detail, the stiffness of the bristles (82) of the first holding brush (8) must be different compared to the stiffness of the bristles (92) of the second holding brush (9), in the embodiment which is described, the bristles (82) of the first holding brush (8) being stiffer compared to the bristles (92) of the second holding brush (9), in the example also the bristles (82) of the first holding brush (8) being also longer compared to the bristles (92) of the second holding brush (9).

[0043] Furthermore, in order to enable said first holding brush (8) and second holding brush (9) to be able to perform suitable half-rotational movements, the retaining base (81) of the first holding brush (8) as well as the retaining base (91) of the second holding brush (9) are shaped so as to enable half-rotational movements guided by the respective retaining housings (53, 53', 54, 54'). In the embodiment which is described, as shown particularly in [Fig. 2], preferably, the retaining base (81, 91) of each holding brush (8, 9) has a circular or elliptical section, a different functional conformation to enable half-rotational movements remaining however possible.The possibility of half-rotational movement of the first holding brush (8) and the second holding brush (9) is given by the opening of the first retaining housing (53, 53') and the second retaining housing (54, 54') each of which allows the holding brushes (8, 9) to pass from a condition of minimum engagement of the free edge (31, 32) of the protective net (3) to a condition of maximum engagement of the free edge (31, 32) of the protective net (3). At least one holding brush (8, 9) is held in an inclined position relative to the free edge (31, 32) of the protective net (3) and, in the example, the inclination of the first holding brush (8) relative to the plane orthogonal to the protective net (3) is preferably between 5° and 60°. In more detail of the embodiment which is described, as illustrated particularly in [Fig.2], when the protective net. (3) is in normal operating condition of winding and unwinding, the holding brushes (8, 9), thanks to the authorized half-rotation movement thereof, oppose a limited resistance to the sliding movement of the protective net (3) by tending to place themselves in the position of minimum engagement with the holes of the meshes of the free edge (31, 32) of the protective net (3), said condition being maintained even in the absence of external stresses which act on the protective net (3). When on the contrary, as particularly illustrated in [Fig.3], the protective net (3) is in a condition of external stress, for example due to the wind blowing or a shock acting on it, the stress action on the protective net (3) which acts orthogonally to the plane thereof tends to extract the free edges (31, 32) of the guide slots (51, 51') of the sliding guides (5, 5'), where the combination of the action of the narrow measurement of the opening of the guide slot (51, 51'), of the second holding brush (9) and of the first holding brush (8) causes the latter to be placed in a condition of maximum engagement of the free holes of the free edge (31) of the protective net (3).Depending on the forces acting on the protective net (3), for example depending on the intensity of the wind or the shock affecting it, the engagement of the free edges (31, 32) of the protective net (3) by the retaining brushes (8, 9) can be between a minimum and a maximum depending on the half-rotation movement allowed to them by the free portion of the retaining housing (53, 53', 54, 54') to which they are constrained.

[0044] In more detail, in the case where the protective net (3) would be stressed by forces which, by acting on it, tend to make it come out of the guide slot (51, 51') of the sliding guide (5, 5'), the opposition to the exit of the latter will be operated by the contribution of the reduced size of the opening of the guide slot (51, 51') which contributes to limiting the possibilities of displacement of the protective net (3) itself, where the second holding brush (9), which is provided with bristles (92) having a length and stiffness less than those of the first holding brush (8), thanks to the entry in opposition with the free edge (31, 32) of the protective net (3) further contributes to limiting the lateral displacement of the protective net (3), where the half-rotation of the holding brushes (8, 9) triggered by the extraction displacement of the protective net (3) determines the greatest engagement of the free edge stitches (31,32) of the protective net (3) by the bristles (82) of the first brush, which have a greater length and stiffness than the bristles (92) of said second holding brush (9) and thus make it possible to effectively retain the free edges (31, 32) of the protective net (3) inside the guide slot (51, 51') of the sliding guide (5, 5'), while avoiding the possibility of its laceration.

[0045] From a functional point of view, each holding brush (8, 9) is able to perform half-rotation movements capable of allowing the variation of the engagement of the meshes of the free edge (31, 32) of the protective net (3) by the bristles (82, 92) of the holding brushes (8, 9) as a function of the variation in the position of the free edge (31, 32) of the protective net (3). A subsequent winding or unwinding maneuver of the protective net (3) as a result of the movement of the handle bar (4) forces the release of the bristles (82) particularly of said first holding brush (8) by further inducing a half-rotation of the holding brushes (8, 9) so as to allow a new fluidity of movement to the protective net (3).The extent of the opening of the guide slot (51, 51') of the sliding guide (5, 5') cannot be contained beyond a certain extent given the need to also allow the passage of the known support devices (not shown) of the protective net (3) which allow its movement by means of the handle bar (4) hence the arrangement of the second holding brush (9), whose bristles (92) are less rigid than those of the first holding brush (8), so that it can contribute to improving the holding of the protective net (3) as well as to guarantee an adequate "closure" of the space between the protective net (3) and the guide slot (51, 51') of the sliding guide (5, 5') so as to further avoid the possibility of insect penetration without the presence of said second holding brush (9) being able to contribute to hindering the movement of the protective net (3) during its rolling and its unfolding. .

[0046] As also illustrated in the representations of Figures 4 to 6, the mosquito net (1) of the invention may also be of the horizontal sliding type so that the arrangement of said first brush (8) and second brush (9), which contribute in the described manner to retaining the protective mosquito net (3), must necessarily take into account the structuring of the mosquito net (1) itself. In more detail, as illustrated in [Fig.5], even in a mosquito net (1) with horizontal sliding, the protective net (3) is of the type with free edges (31, 32) without finishes, the sliding guide (5") furthermore being horizontal, consisting of a profile comprising a guide slot (51") whose opening has a measurement preferably between 3 mm and 4 mm, through the guide slot (51") the protective net (3) is sliding, the respective free edge (31') of which slides inside the corresponding hollow housing (52") with which the horizontal sliding guide (5") is provided. The sliding guide (5"), horizontal, is provided inside the hollow housing (52"), with at least a first retaining housing (53") and at least a second retaining housing (54"), reciprocally opposite, where said retaining housings (53", 54") can be of the continuous or discontinuous type. As particularly shown in [Fig.5], the first retaining housing (53") as well as the second retaining housing (54") are made to be semi-circular with an open portion oriented towards the free edge (31, 32) of the protective net (3), where the first . holding brush (8) is constrained by the first retaining housing (53") and the second holding brush (9) is constrained by the second retaining housing (54"), so that the first holding brush (8) is opposite the second holding brush (9), said holding brushes (8, 9) themselves being in accordance with what has already been described above where the bristles (82) of the first holding brush (8) are more rigid than the bristles (92) of the second holding brush (9), the retaining bases (81, 91) thereof being shaped so as to be compatible with the constraint, also in semi-rotation, to said retaining housings (53", 54"), in the example said retaining bases (81, 91) preferably being of the type with a circular or elliptical section.

[0047] Furthermore, as particularly illustrated in the representations of [Fig.5] and [Fig.6], if the mosquito net (1) is horizontally sliding, the modules (71) of which the net guide chain (7) is composed are made in such a way as to comprise a sliding slot (711) whose opening has a measurement preferably between 3 mm and 4 mm, through the sliding slot (711) the protective net (3) is sliding, the respective free edge (32) of which has a collocation, also sliding, inside the corresponding cavity (712) with which each module (71) of the net guide chain (7) is provided. Each module (71) of the net guide chain (7) is provided, inside the cavity (712), with at least one first engagement housing (713) and at least one second engagement housing (714) mutually opposite where said engagement housings (713, 714) can be of the continuous or discontinuous type. As particularly shown in [Fig.5], both the first engagement housing (713) and the second engagement housing (714) are made to be semi-circular with an open portion oriented towards the free edge (31, 32) of the protective net (3), where the first holding brush (8) is constrained by the first engagement housing (713) and the second holding brush (9) is constrained by the second engagement housing (714), so that the first holding brush (8) is opposite the second holding brush (9), where the bristles (82) of the first holding brush (8) are stiffer than the bristles (92) of the second holding brush (9) and the retaining bases (81, 91) of these holding brushes (8, 9) are shaped to be compatible with the constraint, also in half-rotation, to said engagement housings (713, 714), in the example said retaining bases (81,91) preferably being of the circular or elliptical section type.From a functional point of view, the retention of the free edges (31, 32) of the protective net (3) in a horizontally sliding mosquito net (1), as illustrated by way of example in Figures 5 and 6, is functionally the same as has already been described with reference to the example of the vertically sliding mosquito net (1). Furthermore, in the solution which is the subject of the present invention, at least . said first holding brush (8) is, relative to the protective net (3), in an inclined position and the inclination of the first holding brush (8) relative to the plane orthogonal to the protective net (3) is preferably between 5° and 60°. In this way, by means of the solution which is the subject of the present invention, the proposed advantages are obtained, among others, also consisting of allowing optimal retention of the free edges (31, 32) of the protective net (3), these being without finishes, while allowing equally optimal unwinding and winding of the protective net (3).

[0048] LEGEND

[0049] (1) mosquito net

[0050] (2) box

[0051] (3) protective net

[0052] (31) first free edge

[0053] (32) second free edge

[0054] (4) handle bar

[0055] (41) upper end

[0056] (42) base

[0057] (5, 5', 5") sliding guide

[0058] (51, 51', 51") guide slot

[0059] (52, 52', 52") hollow housing

[0060] (53, 53', 53") first retaining housing

[0061] (54, 54', 54") second retaining housing

[0062] (6) engagement rail

[0063] (7) net guide chain

[0064] (71) modules

[0065] (711) sliding slot

[0066] (712) cavity

[0067] (713) first engagement housing

[0068] (714) second engagement housing

[0069] (8) first holding brush

[0070] (81) retaining base

[0071] (82) hairs

[0072] (9) second holding brush

[0073] (91) retaining base

[0074] (92) hairs

Claims

1. Claims Mosquito net (1) with controlled retaining devices of the protective net of the vertical sliding or horizontal sliding type comprising at least one box (2) to which a winding roller is rotatably constrained comprising a longitudinal slot through which a protective net (3) is slidable with one end constrained to the winding roller and with the opposite end constrained to a handle bar (4) sliding relative to at least one sliding guide (5, 5', 5") provided with a guide slot (51, 51', 51") through which a free edge (31, 32) of the protective net (3) is slidable, CHARACTERIZED IN THAT the protective net (3), at least at a free edge (31, 32) is without finishes and where at least a part of at least one free edge (31, 32) of the protective net (3), at least when the protective net (3) is in a fully unrolled condition or partial, is retained by the hairs (82,92) of at least one first holding brush (8) and at least one second opposite holding brush (9), each holding brush (8, 9) being capable of performing half-rotation movements capable of allowing the variation of the engagement of the meshes of the free edge (31, 32) of the protective net (3) by the bristles (82, 92) of the holding brushes (8, 9) as a function of the variation of the position of the free edge (31, 32) of the protective net (3), AND THAT at least one sliding guide (5, 5', 5") of the mosquito net (1) is provided with at least one first retaining housing (53, 53', 53") and at least one second retaining housing (54, 54', 54") opposite each other, which are thus located on opposite sides of the guide slot (51, 5 T, 51"), wherein both the first retaining housing (53, 53', 53") and the second retaining housing (54, 54', 54") are made to be semi-circular with an open portion oriented towards the free edge (31, 32) of the protective net (3), said retaining housings (53, 53', 53", 54, 54', 54") retaining, with the possibility of half-rotational movements, at least the retaining base (81,91) with which the first holding brush (8) as well as the second holding brush (9) are provided.

2. Mosquito net (1) according to the preceding claim CHARACTERIZED IN THAT the bristles (82) of the first holding brush (8) have a different stiffness compared to the bristles (92) of the second holding brush (9).

3. Mosquito net (1) according to at least one of the preceding claims, CHARACTERIZED IN THAT the bristles (82) of the first holding brush (8) have a different length compared to the bristles (92) of the second holding brush (9).

4. Mosquito net (1) according to at least one of the preceding claims, CHARACTERIZED IN THAT the retaining base (81, 91) of at least one holding brush (8, 9) has a circular or elliptical section.

5. Mosquito net (1) according to at least one of the preceding claims, CHARACTERIZED IN THAT at least one holding brush (8, 9) is held in an inclined position relative to the free edge (31, 32) of the protective net (3).

6. Mosquito net (1) according to at least one of the preceding claims, CHARACTERIZED IN THAT the mosquito net (1) is of the horizontal sliding type of the protective net (3) and comprises at least one net guide chain (7) whose modules (71) are provided with at least one sliding slot (711) and a cavity (712) inside which there are at least one first engagement housing (713) and at least one second engagement housing (714) facing each other which are thus located on opposite sides of the sliding slot (711), where both the first engagement housing (713) and the second engagement housing (714) are made to be semi-circular with an open portion oriented towards the free edge (31, 32) of the protective net (3), said engagement housings (713, 714) engaging, with the possibility of half-rotation movements, at least the retaining base (81,91) with which the first holding brush (8) as well as the second holding brush (9) are provided.,

7. Mosquito net (1) according to at least one of claims 1 to 5, CHARACTERIZED IN THAT the measurement of the opening of the guide slot (51, 51', 51") is between 2 mm and 6 mm.

8. Mosquito net (1) according to claim 6, CHARACTERIZED IN THAT the measurement of the opening of the sliding slot (711) of the

9. modules (71) of the net guide chain (7) is between 2 mm and 6 mm. Mosquito net (1) according to one of claims 5 to 8, CHARACTERIZED IN THAT the inclination of the first retaining brush (8) relative to the plane orthogonal to the protective net (3) is between 5° and 60°.

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