BR-102020018864-B1 - MODULAR VENTILATION GRILLE
Abstract
MODULAR VENTILATION GRILLE. This refers to a grille used to cover small ventilation or exhaust openings in walls, ceilings, or window frames. It comprises a first ring (A1), formed by a rear tubular segment (T1), on whose front face an external contouring flange (E1) is formed, on whose front face a recess in the form of a contouring channel (K1) is formed. The second element comprises a second ring (A2), formed by a rear tubular segment (T2), which fits inside the tubular segment (T1) of the first ring (A1). The tubular segment (T2) also has an external contouring flange (E2), on whose front face a recess in the form of a contouring channel (K2) is formed, while on its rear face a circular contouring protrusion (S2) is formed, and on the inner face of the tubular segment (T2) a plurality of horizontal and parallel fins (L) are formed. In turn, the third element (A3) comprises a disc-shaped plate (D), which is provided with holes (O), forming a screen. On the posterior face of said plate (D), and close to its outer edge, a circular contouring protrusion (S3) is formed, with a diameter equivalent to the channels (...).
Inventors
- Geraldo Fornasa
Assignees
- IBRAP INDUSTRIA BRASILEIRA DE ALUMINIO E PLASTICOS SA
Dates
- Publication Date
- 20260317
- Application Date
- 20200916
Claims (1)
- 1) MODULAR VENTILATION GRILLE, preferably made of rigid plastic material, and characterized by comprising three elements, wherein the first element comprises a first ring (A1), which has a rear tubular segment (T1), on whose front face an external contouring flange (E1) is formed, on whose front face a recess in the form of a contouring channel (K1) is formed, wherein the second element comprises a second ring (A2), which also has a rear tubular segment (T2), whose outer face diameter corresponds to the inner face diameter of the tubular segment (T1) of the first ring (A1), allowing the insertion of the tubular segment (T2) of the second ring (A2) inside the tubular segment (T1) of the first ring (A1), and wherein the tubular segment (T2) of the second ring (A2) also has on its front face the formation of an external contouring flange (E2), on whose front face a recess in the form of a contouring channel (K2) is formed, while On the rear face of the flange (E2) of said second ring (A2) a circular contouring protrusion (S2) is formed, with a diameter corresponding to the diameter of that channel (K1) of the first ring (A1), and on the inner face of the tubular segment (T2) of said second ring (A2) a plurality of horizontal and parallel fins (L) is formed, and in turn, the third element (A3) comprises a disc-shaped plate (D), which is provided with rows of through holes (O), constituting a screen, and on the rear face of said plate (D), and close to its outer edge, a circular contouring protrusion (S3) is formed, with a diameter equivalent to the channels (K1) and (K2) of rings (A1) and (A2), respectively.
Description
Field of invention [001] The present invention is intended for the civil construction segment, and refers to a grate that is used to cover small ventilation or exhaust openings, which are made in walls, ceilings, or window frames (in glass), with the aim of preventing the entry (or exit) of animals - birds, rodents, cats, dogs, insects, among others - or restricting the incidence of sunlight or wind. The present grate is made up of multiple elements that fit together in a modular way, allowing for various alternative uses. State of the art [002] It is known that in some types of buildings, or parts of buildings, it is important to make small openings at strategic points in walls, ceilings, or even window frames, with the aim of allowing some ventilation or air exhaust effect, as the case may be. On the other hand, it is common sense that buildings – especially those intended to house living beings, above all humans – need to have some means of protection against excessive wind or sunlight; and also against the invasion of animals, especially the most common ones, which are the smaller ones, and more particularly insects. That said, it is worth noting that, in order for those aforementioned ventilation and/or exhaust openings to be maintained without major problems, an element in the form of a grid, which is fixed over the opening, has long been conceived. Currently known window grilles can consist of a frame with a plurality of parallel slats in the center, forming a popularly known "Venetian blind," which serves to limit the entry of wind, sunlight, and small animals; or the frame may have its center occupied by a finer mesh screen, designed to prevent insects from entering; or the frame may have a combination of slats and screen, thus combining the aforementioned functionalities. However, grilles of this type that offer the possibility of alternating between slatted and screen configurations are not available on the market; nor are they easy to remove either element for maintenance or cleaning, as the grilles or screens are screwed to the wall around the opening, requiring tools, skill, and time for assembly and occasional disassembly. [003] In turn, patent document AU2010227104 proposes a “Safety Grid”, which is initially intended to block the passage of people through the access entrance of a rainwater collection pipe, this access being inside a manhole. The invention proposes that a ring (200) be mounted over an opening (210) – which constitutes the access to the rainwater pipe – the outer face of which fits into the inner face of the opening (210); and that, inside the outer ring (200), a grid (100) is mounted, which comprises a ring (110) in which a mesh (120) is formed inside; the ring (110) that makes up the grid (100) is fixed in front of the outer edge of the ring (200) by means of intermediate supports (130) – in the shape of the letter “L” – and screws (140) and (150). In light of these observations, it is evident that the ring (110) of the grid (100) is not telescopically inserted into the interior of the ring (200), both elements remaining slightly separated from each other by means of the support (130), as clearly illustrated in FIG 5 of the corresponding patent document. Furthermore, the invention does not propose means for at least two grids, which are formed independently and have different and complementary meshes in their function, to be mounted modularly with each other and also on the ring of the tube inlet, so that the object of patent document AU2010227104 allows the choice of only one grid alternative and respective mesh size at a time. Finally, it should be noted that the aforementioned object requires the use of intermediate connecting elements for assembling the elements, and also uses screws, which impairs practicality and economy, in addition to being small objects that can come loose and be easily lost, among other inconveniences. [004] In turn, patent document US2010323605 proposes a set of two-part grilles, designed to fit a ventilation opening made in a thin wall, preferably a door. The said grille comprises two grids, each mounted on one of the outer faces surrounding the ventilation opening; each grid comprising a frame (11), between whose lateral segments parallel fins (12) are formed. In turn, on the rear face of both frames (11) are formed interlocking elements (15) and (17), by means of which both grilles are interfixed from their rear faces, inside the ventilation opening. And between the rear faces of both grilles is mounted an air filter blade (20) which is positioned there by means of guides (19). This solution has the disadvantage of presenting a complex constructive form, increasing the product cost, and also does not present a modular concept, not favoring the easy insertion or removal of the internal filter (20). In addition, the pins (15) and (17) are usually relatively fragile elements, which can break easily during frequent assembly and disassembly, which