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EP-4737675-A1 - SYSTEM FOR MOTORIZED VENETIAN BLIND AND MOUNTING KIT

EP4737675A1EP 4737675 A1EP4737675 A1EP 4737675A1EP-4737675-A1

Abstract

A Venetian blind system (1) with slats comprises a motorized winding unit (10) provided with a rotatable winding roller (14), two variator devices (16) for maneuvering the slats, a fixed stop element (18), engaged with the variator device (16) to prevent the rotation of the outer ring (24''), and a tubular motor (20) inserted into the winding roller. The winding roller (14) and the stop element (18) are telescopic to adapt to the width of a window compartment.

Inventors

  • CHERUBINI, LIONELLO

Assignees

  • Cherubini S.p.A.

Dates

Publication Date
20260506
Application Date
20250910

Claims (13)

  1. A Venetian blind system (1) with slats comprising a motorized winding unit (10) provided with: - a rotatable winding roller (14); - at least one variator device (16) for maneuvering the slats, comprising a rotatable inner ring (24') inserted onto the winding roller to be driven to rotate, and an outer ring (24"); - a fixed stop element (18); - a tubular motor (20) inserted into the winding roller; characterized in that said fixed stop element (18) is engaged with the variator device (16) to prevent the rotation of the outer ring (24"); and wherein the winding roller (14) and the stop element (18) are telescopic to adapt to the width of a window compartment.
  2. A Venetian blind system according to claim 1, wherein the winding roller (14) comprises a first segment or left segment (14a), a second segment or right segment (14b), and a third segment or intermediate segment (14c), at the sides of which the left segment (14a) is inserted on the one side and the right segment (14b) on the other side.
  3. A Venetian blind system according to claim 2, wherein the right segment (14b) is slidably coupled axially to the intermediate segment (14c) and fixable to said intermediate segment (14c) in a predefined relative axial position.
  4. A Venetian blind system according to claim 3, wherein the right segment (14b) is fixable to the intermediate segment (14c) by means of a slot (26') of the intermediate segment (14c) extending axially along a side wall of said intermediate segment, a hole (28') of the right segment (14b), which crosses the thickness of a side wall of the right segment (14b), and at least one mutual fixing screw (30') which crosses the slot (26') and screws into the hole (28'), axially locking the right segment (14b) to the intermediate segment (14c).
  5. A Venetian blind system according to any one of claims 2 to 4, wherein the left segment (14a) is fixed to said intermediate segment (14c) in a predefined relative axial position.
  6. A Venetian blind system according to any one of claims 2 to 5, wherein the winding roller (14) comprises driving means suitable for engaging the right segment (14b) with the intermediate segment (14c) so that the right segment (14b) can drive the intermediate segment (14c) to rotate.
  7. A Venetian blind system according to claim 6, wherein the driving means provide a shape coupling between the cross-section of the right segment (14b) and the cross-section of the intermediate segment (14c), for example both octagonal.
  8. A Venetian blind system according to any one of the preceding claims, wherein the stop element (18) comprises a first segment or left segment (18a), a second segment or right segment (18b), and a third segment or intermediate segment (18c), placed between the left segment (18a) and the right segment (18b) and slidingly engaged therewith.
  9. A Venetian blind system according to claim 8, wherein the left segment (18a) and the right segment (18b) of the stop element (18) internally have a respective channel (30) and the outer ring (24") of the variator device (16) comprises at least one tooth (24‴) radially protruding and insertable into said channel to lock the rotation of said outer ring (24‴).
  10. A Venetian blind system according to any one of the preceding claims, wherein the left segment (14a) and the right segment (14b) of the winding roller (14) have the same characteristic dimension as the outer cross-section, for example the same distance between the opposite parallel sides of an octagonal section.
  11. A Venetian blind system according to any one of the preceding claims, wherein said at least one variator device (16) comprises a left variator device (16a), inserted onto the left segment (14a) of the winding roller (14), and a right variator device (16b), inserted onto the right segment (14b) of the winding roller (14).
  12. A Venetian blind system according to any one of the preceding claims, wherein the tubular motor (20) is inserted into the right segment (14b) of the winding roller (14).
  13. A kit for mounting a Venetian blind in a window compartment, comprising: - a telescopic winding roller (14); - a pair of variator devices (16a,16b) for maneuvering the slats, wherein each variator device (16a,16b) comprises an inner ring (24') insertable onto the winding roller to be driven to rotate and an outer ring (24"); - a telescopic stop element (18), intended to be fixed in the window compartment, engageable with said variator devices (16a, 16b) to prevent the respective outer ring (24") from rotating; - a tubular motor (20) insertable into the winding roller (14).

Description

Technical field The present invention lies in the field of window and door frames and in particular in the field of systems for shielding from solar rays, such as roller shutters and Venetian blinds. In particular, the subject of the present invention is an innovative system for a motorized Venetian blind and a mounting kit of said system. Background of the invention As is known, a motorized Venetian blind essentially comprises a rotatable winding roller, a motor, for example tubular, inserted into the winding roller to set to rotate, a pair of variators fitted onto the winding roller, a fixed guide arranged above the winding roller to block the outer ring of the variators, and a plurality of orientable and translatable slats, engaged with the variators by means of three cables: two intended for the orientation of the slats and the third intended for vertical translation upwards or downwards. Currently, for the installation of a Venetian blind, it is necessary for a craftsman to go to the construction site to measure the dimensions of the window compartment, and in particular the width. The craftsman then proceeds with the custom manufacture of some components, and in particular of the winding roller and the shading slats, with a length equal to the width of the window compartment. This obviously entails a certain expenditure of time and it is also frequent that some measurements are not exact, making it necessary to remake some components. An example of a Venetian blind system according to the preamble of claim 1 is illustrated in document US2019/063148A1; further examples are illustrated in documents RU2571030C2 and US2023/250690A1. Object of the invention The object of the present invention is to make the installation of a Venetian blind easier, simplifying the work of the craftsman, at the same time improving its reliability and reducing installation costs. This object is achieved by a motorized Venetian blind system according to claim 1 and by the mounting kit according to claim 13. The dependent claims identify further advantageous embodiments of the invention. Brief description of the figures The features and advantages of the present invention will be evident from the description reported below, given by way of example and with no limitation, in accordance with the accompanying figures, in which: Figure 1 shows a Venetian blind system according to one embodiment of the present invention;Figure 2 represents a winding unit of the Venetian blind system;Figure 3 illustrates the winding unit with separated parts;Figures 4a and 4b schematically show the adaptation of the mounting kit to window compartments having different widths. Description of the invention A Venetian blind system 1, according to one embodiment of the present invention, comprises a plurality of slats 2 arranged vertically overlapping; each slat 2 extends predominantly along a horizontal X axis and is rotatable around said X axis to be oriented according to the needs of the user. The slats 2 are also vertically translatable between an upper limit configuration, in which they are stacked, and a lower limit configuration. The system 1 further comprises guide means suitable for guiding the slats in the vertical translation, at the same time allowing each slat to rotate around its own X axis. For example, said guide means comprise a pair of vertical guides 4, for example a first guide or left guide 4a and a second guide or right guide 4b. Each guide 4a, 4b is provided with a continuous vertical groove in which a respective end of the slat 2 or a pin fixed to the slat is engaged. The system 1 further comprises three maneuvering cables 6, 8', 8'': a first maneuvering cable 6 engages the slats to actuate the vertical movement; the second maneuvering cables 8', 8" engage the slats to actuate their rotation, each around its own X axis. The system 1 further comprises a motorized winding unit 10, arranged above the slats, typically in a box or a housing. The winding unit 10 comprises, according to a preferred embodiment, a pair of lateral supports 12, a winding roller 14, at least one variator device 16, preferably a pair of variator devices 16a, 16b, a fixed stop element 18, and a tubular motor 20. The pair of lateral supports 12 comprises a first lateral support or left lateral support 12a and a second lateral support or right lateral support 12b. Preferably, the left lateral support 12a is provided with a pin 22' for insertion into the left guide 4a of the guide means of the slats 2 and is provided with a bearing for the rotatable support of the winding roller 14. Preferably, furthermore, the right lateral support 12b is provided with a pin 22'' for insertion into the right guide 4b of the guide means of the slats 2 and is provided with a fitting for fixing the head of the tubular motor 20. Each variator device 16a, 16b comprises an inner ring 24', suitable for being inserted onto the winding roller 14 with a shape coupling which allows it to be