Classifications

• • E—FIXED CONSTRUCTIONS
  • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
  • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
  • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
  • E06B9/52—Devices affording protection against insects, e.g. fly screens; Mesh windows for other purposes
  • E06B9/54—Roller fly screens
• • E—FIXED CONSTRUCTIONS
  • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
  • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
  • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
  • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
  • E06B9/58—Guiding devices
  • E06B9/581—Means to prevent or induce disengagement of shutter from side rails

Definitions

• This invention has as object an improved fly screen structure, of the type offered to the public in an assembly kit.
• the innovation finds particular even if not exclusive application in the sector of bricolage, regarding the (do-it-yourself) installation of an accessory for casings, which aim consists in protecting rooms from the entry of insects.
• Background Art In prior art different types of fly screen are known, as are sun-screens for rooms. Fly screens, can be subdivided substantially into two types, a first, considered as being the fly screen par excellence, is supplied to measure from the manufacturer exclusively to the installer. It is for this characteristic that it is generally of a quality decidedly higher than that found in others, which allows a reasonably good result.
• a second type of fly screen, to which the present invention refers, is actually present on the market in a decidedly more diffused manner. More in particular it uses the typical do-it-yourself concept, that even though adapting the known technology offers a product able to satisfy common needs but it obviously cannot be compared qualitatively with the made to measure solution types.
• Naturally, variations are also known, all very similar to the described solution.
• rewinding devices of the first type provide, as a general rule, the preloading of a helical spring by twisting, whose unwinding force (resetting the shape) allows the rewinding onto a roll or shaft, of the curtain previously rolled.
• the shaft as we have seen, is generally made up of a metallic tube, contained inside a structure associable to the fixture, the box- profile, which may be supplied in various sizes according to the needs of the installer, if of the made to measure type, or in standard version in the case of the kit.
• a rewinding device particularly for curtain fly screen of the type comprising a box-profile fixable to support wall of a winding roll, as in application N°TV91 A000025, formed by: - a tubular profile supported in correspondence of the extremities by a couple of heads of which at least one idle shaft on the relative integral supporting pivot to said box-profile; - a helical twisting spring placed coaxially to said tubular profile, in which while one end on one side engages to an internal support means to the profile free to slide longitudinally, the other engages integrally to a supporting core-pivot engaged to the box-profile constituting the preloading key; - a coaxial bar to said helical spring, on one side inserted in the support means, inside the profile, free to slide longitudinally, on the other being engaged in the supporting core-pivot engaged to the box-profile constituting the preloading key.
• the use of pre-assembled box-profiles defined in bars, having sizes that are standardised gives the user the possibility to purchase a bar of desired size, measure the light on which they must intervene and finally cut the bar to the desired size to then proceed with the assembly.
• the kit provides for the application on one side, at the head of the aluminium profile, of a plate in which the key of the winding pivot of the spring engages, while on the other it is preferable not to apply the pivot support plate, as the end will be destined to be discarded depending on the sizes of the opening to which the box- profile is to be applied.
• the relative handle bar is supplied in addition and separately, as well as the accessories, amongst which may be included the gaskets to insert in the battens, and so on.
• the European Patent Application N°84201860.8 describes a support structure for every type of slidable curtain easily erectable on any window opening with a device associated to it for a rapid adjustment of the unwinding and the tension of said curtain.
• the characteristics cited firstly provide a special hooking device applied on the side of the respective box- profile and which, consisting in an adjustable tooth, is made operative by the installer during the assembly phase.
• the tooth engages a solid toothed wheel to a supporting pivot of the winding device inside the roll, determining in this way the best recall tension of the curtain according to the height of the window.
• Other teachings supplied by the above description consist in providing a thickness in connection with a plate, to remove once the box-profile is installed, in order that between said plate and the roll there is sufficient distance for the free rolling movement of the same.
• a gasket of the brush type pressing the surface of the curtain against the wall opposite said batten.
• Another accessory for fly screens of the type in an assembly kit concerns a disposable accessory formed by a cross provided with means for the support of the other end of the roll and of the handle bar being abreast externally along a side of said box-profile to be cut, to then be replaced by a dissociated plate for the support of the only roll engageable definitively to the new end of a made to measure box- profile so obtained.
• a third and last type of fly screen actually available on the market, and mainly diffused abroad, is made only of a frame provided with protective fixed net. In practice the latter, differentiates from the preceding because it does not provide the rewinding of the curtain, which in this case remains constantly flat being firmly and uniformly engaged to said frame along the perimeter.
• a first provides the use of an ensemble of eccentric levers, in which one couple respectively over and under for each batten, which push on the curtain, pinching a minimum part.
• the drawbacks are obvious, on one side inconvenient, because it is necessary to intervene manually on said levers on every movement of the curtain, on the other because it causes a high wear and tear of the curtain in proximity to the pinched stitches, until it breaks.
• the third but not last aspect a certain realizable complexity for the presence of numerous components.
• a second solution of fly screen in kit form actually present on the market, provides the use of battens commonly used in the made to measure solutions, from the different profile, and along which is introduced the edge of the curtain provided with buttons associated in the installation phase.
• Figure 1 represents a sectional view of a batten, along which brushes are engaged opposite of which at least one dynamic.
• Figure 2 represents a schematic application of said batten, in a sequence in which the curtain appears in a stretched position.
• Figure 3 represents a view still in section of said batten, but in which on the same curtain there is a certain force, such to determine a deformation in the opposite direction.
• a fly screen particularly of the type prearranged in an assembly kit, provides at least two battens (A), to engage respectively one per side, along the walls of an opening to equip by the installation of the box-profile fly screen holder, in order to prevent the entry of insects into rooms.
• Each batten (A), seen in section, is of the type essentially formed as a double "C” opposed, having the separation side in common.
• the "C” slightly deeper, comprises two sides, parallel and symmetric ( 1 , 2), joined along one end by a base (3) that delimits the sliding seat of the edge of the curtain (4) and realizes clamping surface of the engagement means to wall.
• a seat (5) is monolithically obtained, open on one side, able to contain, as a flexible support and parallelepiped (6) being coaxially introduced, in which known soft bristles (6'), are sunken.
• Said brush (6, 6') is of the static type, after which the bristles exit from the symmetrical opening made in the seat (5) in such a way to constantly and perpendicularly insist on the net (4).
• a second seat (7) is obtained facing the side (2), or along the side ( 1 ), along which a dynamic type brush is engaged.
• said dynamic brush comprises a core (8), introduced coaxially to said seat (7), with section essentially circular, and from which a series of bristles protracts, of the soft and rigid (8') type, that exit from the asymmetric opening (7') made along the guide (7).
• the opening (7') concerns a sector comprised between 90° and 180°, preferably between 100° and 160°, in a way that in the curtain (4) rest position the bristles (8') arranged perpendicularly in respect to the surface of the net (4), with which they interfere only slightly.
• the position may be that illustrated in Figure 2, where the bristles (8'), being flattened, are laid on one side at the end of the stroke.
• an overstretching of the net, (4) corresponds, determining simultaneously the recall of the edges (4') contained on the inside of the batten (A). Said recall towards the exterior, imposes a progressive sinking of the rigid bristles (8') between the stitches of the edge (4') of the net (4), a penetration that will be as great as the intensity of the force exercised from (V).

Landscapes

• Engineering & Computer Science (AREA)
• Structural Engineering (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Life Sciences & Earth Sciences (AREA)
• Insects & Arthropods (AREA)
• Pest Control & Pesticides (AREA)
• Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
• Curtains And Furnishings For Windows Or Doors (AREA)
• Catching Or Destruction (AREA)
• Portable Nailing Machines And Staplers (AREA)
• Paper (AREA)
• Window Of Vehicle (AREA)
• Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
• Telephone Function (AREA)
• Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=11419551

Family Applications (1)

Country Status (10)

Cited By (3)

Families Citing this family (7)

Family Cites Families (3)

• 1994
  • 1994-12-16 IT ITTV940139A patent/IT1273922B/it active IP Right Grant
• 1995
  • 1995-12-11 WO PCT/IT1995/000214 patent/WO1996018796A2/en active IP Right Grant
  • 1995-12-11 AT AT95940407T patent/ATE168737T1/de not_active IP Right Cessation
  • 1995-12-11 CN CN95197565.XA patent/CN1175298A/zh active Pending
  • 1995-12-11 DK DK95940407T patent/DK0797722T3/da active
  • 1995-12-11 DE DE69503662T patent/DE69503662T2/de not_active Expired - Lifetime
  • 1995-12-11 JP JP8518560A patent/JPH11504402A/ja active Pending
  • 1995-12-11 ES ES95940407T patent/ES2121631T3/es not_active Expired - Lifetime
  • 1995-12-11 EP EP95940407A patent/EP0797722B1/de not_active Expired - Lifetime
  • 1995-12-14 ZA ZA9510656A patent/ZA9510656B/xx unknown

Non-Patent Citations (1)

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