Openable sunscreen device with adjustable slats

1. Sunscreen device ( 1 ), comprising at least a plurality of elongated slat elements ( 3 ), movable between an opened condition (O) and a closed condition (C), each slat element having two transversal sides and two longitudinal main sides including a first longitudinal main side ( 6 ) and second longitudinal main side ( 7 ) and having an axle ( 9 ) parallel to the two longitudinal main sides ( 6 , 7 ), wherein ends ( 11 ) of each axle ( 9 ) protrude from said transversal sides and longitudinally slide along respective first lateral sites for sliding ( 15 ) each of the sites for sliding along a longitudinal extension of a side guide element ( 17 ) perpendicular to the slat elements ( 3 ) and fixable to a structure; each axle ( 9 ) connected to at least one distance adjustment member ( 21 ) that regulates a distance between the axles between a minimum distance value in the opened condition (O) and a maximum distance value in the closed condition (C), where each slat element ( 3 ) carries at least one respective arm element ( 23 ) provided with a slider element ( 25 ) at a free end thereof; wherein the device further comprises at least a rotation member ( 27 ) for rotation, in the closed condition (C), of each slat element ( 3 ), around one of the axles ( 9 ), wherein the rotation member ( 27 ) comprises a longitudinal track element ( 31 ) parallel to said first lateral sites for sliding ( 15 ) and comprises, for each slat member ( 3 ), a corresponding transversal track element ( 33 ) where the transversal track elements ( 33 ) are inclined with respect to the longitudinal track element ( 31 ) and placed at mutual distances equal to the maximum distance value in the closed condition (C) between the axles, and said rotation member ( 27 ) also comprises a plurality of switch elements ( 35 ) each placed at an intersection between the longitudinal track element ( 31 ) and the transversal track element ( 33 ) for one of the slat elements for rotating between a rotating condition that aligns the corresponding switch element with the respective transversal track element ( 33 ) and a sliding condition that aligns the corresponding switch element with the longitudinal track element ( 31 ); said device further comprising a translation actuator member ( 41 ) connected to the rotation member ( 27 ) for translating the rotation member ( 27 ) parallel to the longitudinal track element ( 31 ) and a swivel actuator member ( 43 ) connected to the switch elements ( 35 ) to synchronously rotate swivelling track elements ( 37 ) between the rotating and sliding conditions; where each slider element ( 25 ) of each slat element ( 3 ) is assigned to slide in the respective transversal track elements ( 33 ) with each switch element ( 35 ) aligned therewith for rotation of the respective slat element ( 3 ) in the closed condition (C) and along the longitudinal track element ( 31 ) with said said each switch element ( 35 ) aligned therewith during the translation of the respective slat element ( 3 ) between the closed condition (C) and the opened condition (O) and vice versa; wherein in an operative and closed condition (C) the slider elements ( 25 ) of the slat elements ( 3 ) slide along the transversal track elements ( 33 ) and swivelling track elements ( 37 ) as a result of the translation of the rotation member ( 27 ) implemented by the translation actuator member ( 41 ) and modify an angle of the respective slat elements ( 3 ) by rotation around the respective axles ( 9 ); and wherein when the slat elements ( 3 ) form a predetermined value of the angle of rotation, the slider elements ( 25 ) are positioned such that actuation of the swivel actuator member ( 43 ) aligns the respective switch element ( 35 ) to the longitudinal track element ( 31 ) allowing the sliding of the slider elements ( 25 ) along the longitudinal track element ( 31 ) and allowing the at least one distance adjustment member ( 21 ) to translate the slat elements ( 3 ) towards the opened condition (O).

2. Device according to claim 1 , wherein each distance adjustment member ( 21 ) comprises a plurality of flexible tie rods interposed between said axles ( 9 ) to determine a mutual maximum distance and at least one flexible annular element placed between two pulleys, wherein one pulley of the two pulleys is motorized to translate the axle ( 9 ) of the slat element ( 3 ) opposite to one of the slat elements fixed between the opened and closed conditions or vice versa or may comprise a telescopic actuator or each distance adjustment member ( 21 ) comprises a pantograph provided with arms ( 2 , 4 ) mutually articulated for each slat element ( 3 ) where the respective axle ( 9 ) is rotatably connected to at least one arm of said arms ( 2 , 4 ); wherein the pantograph is actuated to reach maximum and minimum pantograph lengths, corresponding to the closed and opened conditions, by a screw and nut screw actuator, by a motorized rack and pinion gear or by the at least one flexible annular element ( 10 ) placed between the two pulleys.

3. Device according to claim 2 , wherein the axle ( 9 ) of each slat element ( 3 ) constitutes the mutual interconnection or end pin of said mutually articulated arms ( 2 , 4 ).

4. Device according to claim 1 , wherein one or both of the transversal sides of each slat element ( 3 ) have respective arm elements ( 23 ) having a respective slider element mounted at a slider end.

5. Device according to claim 4 , wherein an end opposite to the slider element ( 25 ) of each arm element is provided with a protrusion that acts as an end element ( 47 ) of the respective slat ( 3 ) at which transversal side the end element ( 47 ) is fixed, wherein together the arm element ( 23 ) and the end element ( 47 ) form an interposed angle between 60° and 160°.

6. Device according to claim 1 , wherein each axle ( 9 ) is arranged at a center line of one of the slat elements ( 3 ) or at one of the longitudinal main sides ( 6 , 7 ).

7. Device according to claim 5 , wherein the axle ( 9 ) is arranged at one of the longitudinal main sides ( 6 , 7 ) of the slat element ( 3 ) and at a joining point of the corresponding arm element ( 23 ) to the respective end element ( 47 ).

8. Device according to claim 1 , wherein the translation actuator member ( 41 ) includes a first linear actuator having an end fixed to the side guide element ( 17 ) or to a frame ( 48 ) comprising said side guide element ( 17 ) and an other end connected to the rotation member ( 27 ) or to a section bar or other elongated element ( 49 ) fixed thereto and sliding in a longitudinal second site for sliding ( 29 ) formed in the side guide element ( 17 ), wherein a straight line of actuation of the first linear actuator is parallel to the side guide element ( 17 ) for translating the rotation member ( 27 ) along the side guide element ( 17 ).

9. Device according to claim 1 , wherein the switch elements ( 35 ) are approximately cylindrical in shape and are rotatably accommodated around axles thereof in cylindrical seats carried out in the rotation member ( 27 ) at the intersection of the respective longitudinal track element ( 31 ) and the respective transversal track element ( 33 ); wherein the swivel actuator member ( 43 ) comprises a motorized rack for axially translating along the rotation member ( 27 ) or a section bar or other elongated element ( 49 ) fixed thereto ( 27 ) where said motorized rack is meshed with toothed wheels obtained or fixed peripherally to the switch elements ( 35 ) to rotate them and to obtain alignment of the switch elements ( 35 ) with the longitudinal track elements ( 31 ) or to the corresponding transversal track elements ( 33 ) or the swivel actuator member ( 43 ) comprises a second linear actuator ( 53 ) having one end pivoted to the rotation member ( 27 ) or to a section bar or other elongated element ( 49 ) fixed to the rotation member ( 27 ) and sliding in a longitudinal seat made in the side guide elements ( 17 ) and another end pivoted to a rod ( 55 ) for sliding it along said rotation member ( 27 ) or section bar ( 49 ), said rod ( 55 ) connected to eccentric elements ( 57 ) of the switch elements ( 35 ) for rotating the switch elements ( 35 ) so as to align with the longitudinal track element ( 31 ) or to the corresponding transversal track element ( 33 ).

10. Device according to claim 1 , wherein the rotation member ( 27 ) consists of a plurality of modules, each for a respective slat element of the plurality of elongated slat elements ( 3 ), the modules mutually connectable in series, where each module comprises the corresponding transversal track element ( 33 ), a corresponding switch element of said plurality of switch elements ( 35 ) and a portion of the longitudinal track element ( 31 ) and the rotation member ( 27 ) is provided for any number of corresponding elongated slat elements ( 3 ) of the plurality of elongated slat elements consisting of aluminum profiles or profiles of other material that are cut to size for any width of opening or covering.