NL2032625B1

NL2032625B1 - Insect screen with box equipped with profiles for guiding and facilitating the sliding of the protection net

Info

Publication number: NL2032625B1
Application number: NL2032625A
Authority: NL
Inventors: Bettio Loris; Bettio Denis
Original assignee: Bettio Flyscreens S R L
Priority date: 2021-07-29
Filing date: 2022-07-28
Publication date: 2024-01-05
Also published as: ES1294536U; ES1294536Y; FR3125843A3; IT202100003929U1; FR3125843B3; NL2032625A; DE202022104201U1

Abstract

Insect screen with box equipped with profiles for guiding and facilitating the sliding of the protection net comprising a box internally equipped with a revolving winding roller, engaging, for winding and unwinding, a protection net, which protection net itself is engaged with an end to the winding roller around which last is wound in order then to be unwound, coming out from under the box through a longitudinal slit, said protection net, with the end opposite to the one engaged to the winding roller, being engaged to a handlebar, in which the box, at least near the longitudinal slit, is equipped with two opposite and specular shaped profiles in which at least one shaped profile is made in such a way as to comprise at least one concave portion and at least one convex portion.

Description

INSECT SCREEN WITH BOX EQUIPPED WITH PROFILES FOR GUIDING

AND FACILITATING THE SLIDING OF THE PROTECTION NET

[0001] The present invention relates to an insect screen with box equipped with profiles for guiding and facilitating the sliding of the protection net.

Field of the invention

[0002] The invention is applicable particularly, but not exclusively, to the sector of the industry for the production and marketing of screening devices and systems for building openings such as, in particular, insect screens, for example insect screens for doors and windows with vertical sliding, being applicable in particular to the industry for the production and preeminent marketing of insect screens and net-barrier elements for equipping building openings and widely in the industry for the production and marketing of components and accessories for frames.

[0003] In order to supply a screen which prevents the access of insects to inhabited spaces, all those long- and well-known barriers solutions, commonly indicated with the term insect screen, are usually supplied as equipment for doors, windows and skylights and are traditionally made of nets with dense mesh, each one having such dimensions as to prevent insects from crossing them, even if insects have limited dimensions, in any case said barriers being structured to prevent at least the most commonly annoying insects from entering. In an insect screen solution of the traditional type, it is provided a rigid frame bearing a dense mesh net having a suitable area according to the intended purpose, said frame being perimetrically compatible with the measures of the door or window opening which is intended to be equipped with the insect screen itself. According to the current, most common solutions, insect screens can be divided into two categories. A first category, the so-called "measure", is a type of insect screen made at the origin according to measures received by the customer and for its installation qualified personnel is required and a second category, indicated as insect screen in assembly kit, which usually can be installed by non-qualified personnel. With reference to both of the above-mentioned categories of insect screens, even though with prevailing reference to the category of insect screens in assembly kit, it is possible to find common construction elements, concretizing in the box of the type generally consisting of an aluminum extruded profile, in which the winding roller of the protection net of the insect screen is coaxially inserted and it retains a first end of said protection net. By means of said box, the protection net comes out from a suitable longitudinal opening, and it has the second end joined to a handlebar which is movable back and forth with respect to the box. In some solutions, the winding roller can also comprise a corresponding pre-loaded return spring to facilitate the rewinding of the protection net. Furthermore, as for the box ends, they are usually closed by suitable plates, which are supplied together with counter-plates of the adjustable type. In this solution, the box is provided with one or more guides or sliding elements, within which the end of the handlebar and the corresponding side edge of the protection net slide back and forth. Among various solutions of insect screens, other variants are also known, such as for example horizontally sliding insect screens, instead of vertically sliding insect screens, which cause the handlebar to make a translation movement which is directed to pull the net along a horizontal axis.

[0004] Also in the present patent literature, some solutions are found of insect screen structures, among which the following are mentioned, as mere examples:

D1 N. IT1304286 (Bonini)

D2 N. ITTV930004 (Bettio)

D3 N. ITTV20020031 (Bettio)

[0005] D1 briefly describes an insect screen for fast installation, comprising two identical and parallel guides in contact with the jambs of the window, at the top of which a box is fixed, containing the winding roller of the net and means for the automatic re-winding of the same net, said box being suitable for being placed on the upper part, in contact with the lintel of the window; said box being equipped with a lower, full- length opening for the shielding net to pass through, together with first upper elastic means, by means of which the box is in contact with the lintel of the window space and with second side elastic means by means of which the box is in contact with the jambs of the window space. Said first elastic means consisting of two leaf springs anchored along the upper side of the box, the function of which is to keep the insect screen elastically blocked in the window space in vertical direction. With reference to the second elastic means, they consist of a compression spring, acting in a horizontal direction between at least one of the plugs engaging the corresponding end of the torsion-spring and the respective external flange.

[0006] D2 briefly describes an insect screen and a device for blocking the relative components particularly in the packaging of a do-it-yourself kit, of the type consisting of a box inside of which a winding roller of the protection net and the corresponding pre-loaded return spring are previously inserted; said box providing on one side a kind of plate, associated to the profile, suitable for the engagement of the key of the loading pin of the spring, on the other side a disposable accessory made up of a cross element provided with means for supporting the other end of the winding roller and of the handlebar, being externally adjacent to one side of said box to be cut, for finally being replaced by a separated plate for supporting the winding roller only, which can be definitively engaged to the new end of a box to size so obtainable.

[0007] D3 briefly describes a solution of insect screen structure for doors or windows of the fast assembly type comprising a box inside of which a winding roller for winding and vice-versa a protection net possibly cooperating with the corresponding return spring, closed at its ends by plates in the form of caps of which at least one end is provided with supporting means of the corresponding end of the winding roller and two sliding elements placed in correspondence with and coupled to the ends of the box provided with longitudinal opening, defining rectilinear guides for the controlled sliding of the side ends of the protection net; in which at least one of the plates cooperates for fixing the insect screen with a corresponding counter-plate, which can be leaned against the space of the opening where the insect screen structure is required, said counter-plate being stressed by elastic deflection means arranged in the plate, and further in which, the latter is provided with a screw device for elastically adjust the distance with respect to the counter plate, whereas the counter plate is provided with a screw device for the elastic adjustment of the distance with respect to the box side from where the protection net comes out, at the end of which sliding elements are placed.

Disadvantages

[0008] All the known solutions of insect screen systems of prior art have deficiencies and limits, which cause consequent disadvantages.

[0009] According to the applicant, a first disadvantage characterizing all the solutions of insect screen structures of known prior art, has been verified in that all said known solutions are not suitable for allowing a sliding of the protection net which is guided and simplified at the same time.

[0010] According to the applicant, a second disadvantage characterizing all the solutions of insect screen structures of known prior art, has been verified in that all said known solutions do not allow to keep the protection net in the center of the longitudinal slit in a guided way, during its winding and unwinding movement.

[0011] According to the applicant, a third disadvantage characterizing all the solutions of insect screen structures of known prior art, has been verified in that all said known solutions are not optimized in terms of facilitating the winding and unwinding of the protection net contributing to increase its duration, reducing wearing.

[0012] As a whole, according to these introductive considerations, it can be 5 understood that it is a priority to identify alternative solutions.

[0013] The aim of the present invention is also to avoid the above-mentioned disadvantages.

Summary of the invention

[0014] This and other aims are reached by the present invention according to the characteristics as in the included claims solving the problems arising by means of an insect screen with box equipped with profiles for guiding and facilitating the sliding of the protection net comprising a box internally equipped with a revolving winding roller, engaging, for winding and unwinding, a protection net which protection net itself has an end engaged to the winding roller, around which last said protection net is wound in order to be then unwound, coming out downwardly from the box through a longitudinal slit, said protection net with the end opposite with respect to the one engaged to the winding roller, being engaged to a handlebar, in which the box, at least near the longitudinal slit is equipped with two opposite and specular shaped profiles in which at least one shaped profile is made in such a way as to comprise at least one concave portion and at least one convex portion.

Aims and advantages

[0015] In this way, thanks to the considerable creative contribution the effect of which constitutes an immediate technical progress, multiple advantages are achieved.

[0016] A first advantageous aim characterizing the insect screen with box equipped with profiles for guiding and facilitating the sliding of the protection net according to the invention is to allow a sliding of the protection net which is both guided and facilitated.

[0017] A second advantageous aim characterizing the insect screen with box equipped with profiles for guiding and facilitating the sliding of the protection net according to the invention is to allow to keep the protection net in the center of the longitudinal slit in a guided way during its winding and unwinding movement.

[0018] A third advantageous aim characterizing the insect screen with box equipped with profiles for guiding and facilitating the sliding of the protection net according to the present solution is to allow, by facilitating the sliding of the protection net during the winding and the unwinding of the same, to significantly contribute to increase the useful life of the same protection net, appropriately limiting its wearing.

[0019] These and other advantages will appear in the following detailed description of some preferred embodiments with the aid of the enclosed schematic drawings.

Content of the drawings

Figure 1 shows a sectional view of the box of the insect screen according to the subject matter of the present invention with associated shaped profiles;

Figure 2 shows a cross sectional view of the box of the insect screen according to the subject matter of the present invention with associated the shaped profiles

Figure 3 shows a view of the shaped profile of the insect screen with box equipped with profiles for guiding and facilitating the sliding of the protection net according to the subject matter of the present invention;

Figure 4 shows a sectional view of the shaped profile of the insect screen with box equipped with profiles for guiding and facilitating the sliding of the protection net according to the subject matter of the present invention;

Figure 5 shows a cross sectional view of the shaped profile of the insect screen with box equipped with profiles for guiding and facilitating the sliding of the protection net according to the subject matter of the present invention.

Practical execution of the invention

[0020] With reference also to the representations of figures from 1 to 5 an insect screen (1) is described with box equipped with profiles for guiding and facilitating the sliding of the protection net in which, as particularly represented in the representation of figure 1, showing a base solution of the proposed invention, an insect screen (1) is equipped with a box (2) provided with suitable shaped profiles (3) for guiding and facilitating the sliding of the protection net (4). The insect screen (1) according to the invention can be both of the vertically sliding type, in which the sliding of the protection net (4) occurs along the vertical axis, and of the horizontal sliding type, in which the sliding of the protection net (4) occurs along the horizontal axis, said sliding of the protection net (4) being guided in a known way by means of known devices suitable for guiding the protection net (4) in its unwinding and winding in order to close and open the architectonic opening of the building equipped with the protection net (1). By way of example but not limited to it, for what concerns the vertically sliding insect screens, the insect screen (1), in order to allow the guided sliding of the protection net (4) when opening and closing the architectonic opening of the building equipped with said insect screen, is equipped with known commitment stanchions and known vertical guide stanchions which are intended for cooperating in the stable engagement of the box (2) and during downward and upward guiding of the protection net (4) of the insect screen (1).

[0021] Furthermore, and in a known way, the insect screen according to the invention is suitably equipped with a handlebar, which, in a known way, engages the end of the protection net (4) coming out from the box (2), in such a way as to allow the user to carry out the stretching and re-winding movements of the same protection net (4). The insect screen (1) according to the invention, moreover, can be equipped with all of those known devices that allow its functionality, depending on its particular purpose. In more detail of the solution subject matter of the invention, it is provided that the box (2) of the insect screen (1) is made in known way, wherein it consists of a box-like element, preferably made of metal, in the example being made of extruded aluminum, said box (2) being suitably and in a known way structured for functionally internally comprise a revolving winding roller (5) which last is longitudinally placed inside the box (2), and in which the winding roller (5) is suitably and in a known way made to engage an end of the protection net (4), opposite to the end engaged to the handlebar, in such a way as to allow the same protection net (4), to be moved during unwinding and winding. Said protection net (4) passes-through a suitable longitudinal slit (21) with which the same box (2) is equipped, allowing in this way the sliding of the protection net {4} along the sliding axis, which, according to the example, is vertical. Furthermore, it may also be possible that, for the purpose of suitably keeping the protection net (4) under tension, the insect screen (1) according to the invention, can be equipped with known tensioning devices among which, by way of example only, a spiral loading spring may be comprised, which is constrained with an end to the box (2) and with the other end to the winding roller (5).

[0022] Innovatively, as particularly represented in the representations of figure 1 and of figure 2, it is provided that the box (2), for the purpose of guiding and facilitating the sliding of the protection net (4) during unwinding and winding movements, is equipped with two opposite shaped profiles (3) made in such a way as to act both as a guide for the protection net (4) during its movement downward and upward, and to facilitate its passage through the longitudinal slit

(21) of the box (2). More in detail of the described embodiment, as particularly represented in figure 1 and in figure 2, it is provided that the box (2) of the insect screen (1) is made in such a way as to allow the engagement, at the lower longitudinal portion of the same box, of a couple of shaped profiles (3) which are identically made, being arranged in a specular way with respect to each other.

Particularly, in the described embodiment, as represented in detail in figure 2, it is provided that the box (2) includes, at the lower portion, intended for the engagement of said shaped profiles (3), a first protruding end (22) and a second protruding end (23) which last are placed near the longitudinal slit (21), furthermore, always for the purpose of allowing the engagement of said shaped profiles (3), it is provided that the box (2) is equipped with a first retaining profile (24) and with an opposite second retaining profile (25), wherein said first retaining profile (24) is placed near the lower part of the first side (26) of the box (2), whereas the second retaining profile (25) is placed near the second side (27) of the box (2).

[0023] In order to allow the engagement to said protruding end (22, 23) and to the retaining profile (24, 25) of the box (2), it is provided that the shaped profile (3) according to the present invention is suitably made, as particularly represented in figure 5, in such a way as to include a first hooking profile (31) and a second hooking profile (32), shaped in such a way as to be suitable for the constraint respectively to the retaining profile (24, 25) and to the protruding end (22, 23) of the box (2). Alternatively, in any case it is provided that the shaped profile (3) may be constrained to the box (2) also by means of the use of known devices or technical measures that allow the constraint. More in detail of the solution subject matter of the invention, it is provided that the shaped profile (3), in order to be suitable for guiding and facilitating the sliding of the protection net (4), is made in such a way as to be shaped as particularly represented in figure

5, considering that said shaped profile itself (3) forms a concave portion (33) to which a convex portion (34) is joined, in particular being particularly favorable a radius of the concave portion (33) described by an arc of a circle whose radius is between 15 mm and 25 mm, whereas the radius of the convex portion (34) was found to be particularly favorable with the aim of guiding and facilitating the sliding of the protection net (4) when it is described by an arc of a circle whose radius is between 5 mm and 10 mm.

In order to facilitate the sliding of the protection net (4) it is provided that the shaped profile (3) can be made of a material of the known type with low friction coefficient.

Furthermore, it is provided that the shaped profile (3) is made in such a way that it preferably extends at least for the whole width of the protection net (4).

REFERENCE

(1) insect screen (2) box (21) longitudinal slit (22) first protruding end (23) second protruding end (24) first retaining profile (25) second retaining profile (26) first side (27) second side (3) shaped profile (31) first hooking profile (32) second hooking profile (33) concave portion (34) convex portion (4) protection net (5) winding roller

Claims

Conclusions

1. Insect screen with a box equipped with profiles to guide and facilitate the sliding of the protective mesh, which includes a box (2) equipped inside with a rotating winding roller (5), which, for mounting and unwinding, is engaged with a protective mesh (4), said protective mesh (4) itself having an end which is engaged with the winding roller (5), around which it is wound for subsequent unwinding, and thereby from below the box (2) exits through an elongated slot (21), the said protective mesh (4), with its end opposite the end engaged with the winding roller (5), being engaged with a handle bar, where the box (2), at least in the vicinity of the elongated slot (21), is equipped with two opposite profiles (3) shaped as each other's mirror image, whereby at least one shaped profile (3) is made in such a way comprising at least one concave portion (33) and at least one convex portion (34), characterized in that the radius of the concave portion (33) of the shaped profile (3) is described by a circle radius between 15 mm and 25 mm and the radius of the convex part (34) of the shaped profile (3) is described by a circle radius between 5 mm and 10 mm.

Insect screen (1) with a box equipped with profiles for guiding and facilitating the sliding of the protective mesh according to the preceding claim, characterized in that at least one shaped profile (3) comprises one concave portion (33) to which a convex portion (34) is connected.

3. Insect screen (1) with a box equipped with profiles for guiding and facilitating the sliding of the protective mesh according to at least one of the preceding claims, characterized in that the shaped profile (3) is made of a material with a low friction coefficient.

4. Insect screen (1) with a box equipped with profiles for guiding and facilitating the sliding of the protective mesh according to at least one of the preceding claims, characterized in that the length of the shaped profile (3) is at least is equal to the width of the protective mesh (4).

5. Insect screen (1) with a box equipped with profiles for guiding and facilitating the sliding of the protective mesh according to at least one of the preceding claims, characterized in that the box (2), in accordance with the elongated slot (21), is equipped with at least one first projecting end (22) and a second projecting end (23) and, in correspondence with the sides (26, 27), is provided with at least one first retaining profile (24) and a second retaining profile (25), and wherein the shaped profile (3) comprises at least one first hook profile (31) and a second hook profile (32) shaped in such a way that they are compatible to be respectively attached to the retaining profile ( 24, 25) and at the protruding end (22, 23) of the case (2).