Coupling system for the connection element of the slat to prevent slippage of the slat

Abstract

A slat assembly (1) for a sunshade comprises a slat (2), elongated along a longitudinal direction (L) between a first and a second end (20A, 20B) and including an outer surface (201), an inner surface (202), opposite the outer surface (201), a first projection (21), rising from the inner surface (202) along a normal direction (N), perpendicular to the longitudinal direction (L), a second projection (22), rising from the inner surface (202) along the normal direction (N) and spaced apart from the first projection along a transverse direction (T), perpendicular to the longitudinal direction (L) and the normal direction (N). The space between the first and second projections (21, 22) defines a longitudinal groove (SL). The slat assembly (1) comprises a connection element (3), including a coupling plate (30) configured to insert into the longitudinal groove (SL), and a connection arm (31) configured to connect to a movement mechanism (14) of the sunshade (10). The coupling plate (30) comprises a contact surface (310), facing the inner surface (202) of the slat (2), a first lateral surface (311), in contact with the first projection (21), a second lateral surface (312), in contact with the second projection (22), a first sealing tooth (301) and a second sealing tooth (302).

Description

[0001] The present invention relates to a coupling system of the connection element for a slat for a sunshade. Slats for sunshades are devices used to shield in part or totally the light rays filtering through the windows. Slats for sunshades are orientable about an axis of inclination, parallel to a longitudinal direction, along which they present their maximum extension. Based on the inclination of said slats, it is possible to adjust the level of brightness in an environment.

[0002] Slats are devices connected to a sunshade apparatus.

[0003] A sunshade apparatus comprises a plurality of slats, a movement mechanism, a plurality of connection elements and an actuator. Each connection element is configured to connect the respective slat to the movement mechanism. Further, each connection element may be constrained to the slat with a locking element, i.e., a metal clip which locks it along a direction exiting the slat.

[0004] Some embodiments like those described above are illustrated in the Italian patent documents of the same Applicant provided below BO2012A000588 and 102014902318771. The present configuration is not stable as it does not prevent the connection element from slipping out of the slat during movement, causing hazardous slippage of the slat with the risk of causing damage to property and persons.

[0005] The object of the present invention is to make available a coupling system of a connection element of a slat and a method for connecting a slat to a movement mechanism that solve the above cited problems of the prior art. Said object is fully achieved by the coupling system of a connection element of a slat and by the method for connecting a slat to a movement mechanism, according to the present invention, which is characterized by what is set forth in the claims below.

[0006] According to an aspect of the present description, the present invention provides a slat assembly.

[0007] The slat assembly for a sunshade comprises a slat. The respective slat is elongated along a longitudinal direction. The slat comprises a base wall. The slat comprises a first end in the longitudinal direction. The slat comprises a second end in the longitudinal direction. The slat comprises an outer surface. The slat comprises an inner surface. The respective inner surface is opposite the outer surface. The slat comprises a first protrusion. The respective first protrusion rises from the inner surface along a normal direction. The respective normal direction is perpendicular to the longitudinal direction. The slat comprises a second protrusion. The respective second protrusion rises from the inner surface along the normal direction. The second protrusion is spaced apart from the first protrusion along a transverse direction. The respective transverse direction is perpendicular to the longitudinal direction and to the normal direction. The first and second protrusions define a longitudinal groove.

[0008] The slat assembly comprises a connection element. The respective connection element includes a coupling plate. The respective coupling plate comprises a contact surface. The respective contact surface faces the inner surface of the slat. The coupling plate comprises a first lateral surface.

[0009] In an embodiment, the first lateral surface is in contact with the first protrusion.

[0010] The coupling plate comprises a second lateral surface.

[0011] In an embodiment, the second lateral surface is in contact with the second protrusion.

[0012] The coupling plate is configured to be inserted into the longitudinal groove. The coupling plate comprises a first sealing tooth. The respective first sealing tooth is arranged at the first lateral surface. The first sealing tooth protrudes in the transverse direction to interfere with the first protrusion. The coupling plate comprises a second sealing tooth. The respective second sealing tooth is arranged at the second lateral surface. The second sealing tooth protrudes in the transverse direction to interfere with the second protrusion.

[0013] In an embodiment, the coupling plate comprises a plurality of sealing teeth.

[0014] The connection element includes a connection arm. The respective connection arm is configured to connect to a movement mechanism of the sunshade.

[0015] The configuration of the connection element comprising sealing teeth gives stability and solidity to the sunshade, as it prevents unintended extraction, in particular along the longitudinal direction of the connection element, during movement of the slat, for example due to its inclination with respect to the horizontal direction. The presence of the sealing teeth generates efficient interference between the connection element and the slat. Further, the presence of the sealing teeth gives stability and solidity to the coupling system between the slat and the movement mechanism.

[0016] The first sealing tooth has a thickness. The thickness is variable along the transverse direction. The second sealing tooth has a thickness. The thickness is variable along the transverse direction. The thickness of the respective first and second sealing teeth defines the shape of the first and of the second sealing tooth, respectively.

[0017] In an embodiment, the thickness of the first sealing tooth decreases along the transverse direction. The thickness of the first sealing tooth decreases in a direction exiting the first lateral surface of the coupling plate.

[0018] In an embodiment, the thickness of the second sealing tooth decreases along the transverse direction. The thickness of the second sealing tooth decreases in a direction exiting the second lateral surface of the coupling plate.

[0019] The first sealing tooth has a height. The height of the first sealing tooth is variable along the normal direction. The second sealing tooth has a height. The height of the second sealing tooth is variable along the normal direction. The height of the respective first and second sealing teeth defines the shape of the first sealing tooth and the second sealing tooth, respectively.

[0020] In an embodiment, the height of the first sealing tooth decreases along the normal direction.

[0021] In an embodiment, the height of the second sealing tooth decreases along the normal direction. The height of the first and second sealing teeth decreases in a direction exiting the inner surface of the slat.

[0022] The shape of the sealing teeth allows inhibiting the sliding and avoiding the extraction of the connection element from the longitudinal groove during movement of the slat.

[0023] This embodiment allows greater gripping of the sealing tooth which provides greater solidity and retention stability of the coupling system.

[0024] In an embodiment, the sealing tooth has greater hardness with respect to the hardness of the material of which the first and second protrusions are made.

[0025] In an embodiment, the sealing tooth has a hardness equal to the hardness of the material of which the first and second protrusions are made.

[0026] The greater hardness of the material of which the sealing teeth are made, with respect to the hardness of the material of which the first and second protrusions are made, allows the sealing tooth to indent the respective protrusion more easily.

[0027] The hardness of the material of which the sealing teeth are made defines the efficiency of the interference generated between the connection element and the slat.

[0028] In an embodiment, the first protrusion comprises a first notch. The respective first notch comprises a first longitudinal shoulder surface. The respective first shoulder surface is configured to abut the first sealing tooth along the longitudinal direction in both sliding directions. The respective sliding directions are parallel to the longitudinal direction. The first notch comprises a second longitudinal shoulder surface. The respective second shoulder surface is configured to abut the first sealing tooth along the longitudinal direction in both sliding directions. The first and second shoulder surfaces are spaced apart along the longitudinal direction, respectively.

[0029] In an embodiment, the second protrusion comprises a second notch. The respective second notch comprises a third longitudinal shoulder surface. The respective third shoulder surface is configured to abut the second sealing tooth along the longitudinal direction in both sliding directions. The second notch comprises a fourth longitudinal shoulder surface. The respective fourth shoulder surface is configured to abut the second sealing tooth along the longitudinal direction in both sliding directions. The third and fourth shoulder surfaces are respectively spaced apart along the longitudinal direction.

[0030] Said first and second notches define a housing for the sealing teeth.

[0031] This embodiment makes it possible to inhibit sliding and to prevent extraction of the connection element from the longitudinal groove of the slat.

[0032] In an embodiment, the first notch is spaced apart from the first longitudinal end of the slat by a first connection distance. The respective first connection distance is parallel to the longitudinal direction. The first connection distance defines the position of the first sealing tooth on the first lateral surface of the coupling plate.

[0033] In an embodiment, the first connection distance is comprised between 1 mm and 10 cm.

[0034] In an advantageous embodiment, the first connection distance is 1 mm.

[0035] In an embodiment, the second notch is spaced apart from the first longitudinal end of the slat by a second connection distance. The respective second connection distance is parallel to the longitudinal direction. The second connection distance defines the position of the second sealing tooth on the second lateral surface of the coupling plate.

[0036] In an embodiment, the second connection distance is comprised between 1 mm and 10 cm.

[0037] In an advantageous embodiment, the second connection distance is 1 mm.

[0038] Advantageously, the positioning of the sealing teeth allows coupling the slat at its ends.

[0039] In an embodiment, the slat assembly comprises a locking element. The respective locking element comprises a first coupling end. The respective first coupling end is configured to couple with the first protrusion. The locking element comprises a second coupling end. The respective second coupling end is spaced apart from the first coupling end along the transverse direction. The second coupling end is configured to couple with the second protrusion.

[0040] In an embodiment, the locking element is arranged above the connection element along the normal direction.

[0041] Advantageously, the locking element is configured to prevent extraction of the connection element along the normal direction from the longitudinal groove.

[0042] Advantageously, the locking element inhibits the possibility of movement of the connection element along the normal direction, imparting greater safety to the sunshade device.

[0043] In an embodiment, the first protrusion comprises a first coupling cavity. The respective first coupling cavity extends along the transverse direction. In an embodiment, the first coupling cavity extends through the first protrusion.

[0044] In an embodiment, the first coupling cavity is blind. The term blind coupling cavity means a cavity made by means of a perforation in the transverse direction on the protrusion of a smaller length with respect to the thickness of the protrusion itself, i.e., the hole has a side face open and facing the longitudinal groove in the transverse direction and an opposite side face closed in the transverse direction.

[0045] In an embodiment, the second protrusion comprises a second coupling cavity. The respective second coupling cavity extends along the transverse direction.

[0046] In an embodiment, the second coupling cavity passes through the second protrusion.

[0047] In an embodiment, the second coupling cavity is blind.

[0048] In an embodiment, the first protrusion is configured to elastically retract along the transverse direction in response to an insertion force applied by the first sealing tooth (by means of an inclined surface decomposing an insertion pressure along the normal direction into a transverse insertion force), so as to allow an insertion of the first sealing tooth into the first coupling cavity.

[0049] In an embodiment, the second protrusion is configured to elastically retract along the transverse direction in response to the insertion force applied by the second sealing tooth (by means of an inclined surface that decomposes an insertion pressure along the normal direction into a transverse insertion force), so as to allow an insertion of the second sealing tooth into the second coupling cavity.

[0050] In an embodiment, the first sealing tooth is configured to be inserted into the first coupling cavity.

[0051] In an embodiment, the second sealing tooth is configured to be inserted into the first coupling cavity.

[0052] Advantageously, the first coupling cavity and the second coupling cavity inhibit sliding and prevent extraction of the connection element from the longitudinal groove both along the longitudinal direction and the normal direction.

[0053] Advantageously, the present embodiment allows obtaining a solid and stable coupling system.

[0054] Advantageously, the present embodiment makes it possible to avoid the use of a locking element to inhibit sliding and prevent extraction of the connection element from the groove both along the longitudinal direction and the normal direction, thereby reducing costs.

[0055] Advantageously, the present embodiment provides the technical advantage of the immediacy and ease of installation of the connection element.

[0056] In an embodiment, the slat assembly comprises an additional connection element. The respective additional connection element defines a second connection element. The second connection element is connected to the slat at the second end in the longitudinal direction.

[0057] The connection element described above defines a first connection element. The respective first connection element is connected to the slat at the first end in the longitudinal direction.

[0058] One or more of the described features related to the connection element are also applicable to the cited first and second connection elements.

[0059] The first and second connection elements allow coupling the slat on both sides with the movement mechanism of the sunshade.

[0060] According to an aspect of the present description, the present invention provides a coupling assembly for a slat of a sunshade.

[0061] In an embodiment, the coupling assembly comprises the connection element, comprising one or more of the features described above. The coupling plate comprises a rear surface. The respective rear surface is opposite the contact surface. The coupling plate comprises a connection surface. The respective connection surface is perpendicular to the contact surface. The connection surface is connected to the connection arm. The coupling plate comprises a lead-in surface. The respective lead-in surface is opposite the connection surface.

[0062] In an embodiment, the coupling assembly comprises a locking element, comprising one or more of the features described above. The locking element is movable along the longitudinal direction between an uncoupled position and a coupled position. The respective uncoupled position is obtained by misaligning the locking element with respect to the coupling plate along the normal direction. The coupled position is obtained by aligning the locking element along the normal direction with respect to the coupling plate to prevent extraction of the connection element along the normal direction.

[0063] In an embodiment, the connection element comprises a chamfer inclined with respect to the normal direction and to the longitudinal direction. The respective chamfer connects the rear surface to the lead-in surface. The chamfer comprises an inclined wall.

[0064] The chamfer present in the described embodiment helps to guide and to slide the locking element on the coupling plate. The presence of this chamfer on the coupling plate reduces the forces required to obtain the coupled position. By facilitating the sliding of the locking element on the coupling plate and by reducing the forces required to align the locking element with the coupling plate, the chamfer contributes to minimizing the wear of the material of the coupling plate, and to preserving the integrity of the locking element. Further, by forming the chamfer on the coupling plate, the overall size of the coupling assembly composed of locking element and coupling plate is reduced, enabling a more compact coupling assembly.

[0065] In an embodiment, the locking element comprises an upper surface. The respective upper surface is flat.

[0066] The flat upper surface further reduces the size along the normal direction of the coupling assembly and also allows a smoother and more pleasant aesthetic perception of the slat.

[0067] In an embodiment, the chamfer is inclined with respect to the normal direction. The inclination between the chamfer and the normal direction defines a first inclination angle. In other words, the chamfer extends along an inclined chamfer direction with respect to the normal direction to define the first inclination angle. The respective first inclination angle is comprised between 15° and 75°.

[0068] In an embodiment, the first inclination angle is comprised between 10° and 85°.

[0069] The first inclination angle defines the inclination of the chamfer, which in turn affects the ease of sliding of the locking element on the coupling plate.

[0070] In an embodiment, the lead-in surface has a height along the normal direction. The ratio between the height of the lead-in surface and the distance between the contact surface and the rear surface along the normal direction is smaller than 0.95.

[0071] In an embodiment, the ratio between the height of the lead-in surface and the distance between the contact surface and the rear surface along the normal direction is comprised between 0.75 and 0.85.

[0072] The ratio between the height of the lead-in surface and the distance between the contact surface and the rear surface defines the height of the chamfer. A smaller ratio entails a greater height of the chamfer, which further facilitates the insertion and sliding of the locking element, and also allows the insertion of locking elements with tabs having higher protrusions (which correspond to stronger seals).

[0073] In an embodiment, the coupling plate has a height along the normal direction.

[0074] In an embodiment, the locking element has a height along the normal direction.

[0075] In an embodiment, the sum of the height of the coupling plate and the height of the locking element in the coupled position is smaller than 0.85 cm, preferably smaller than 0.8 cm, even more preferably smaller than 0.75 cm.

[0076] With such dimensions, the coupling assembly appears slender, linear and lightweight, resulting in a higher-performing sunshade.

[0077] In an embodiment, the locking element comprises a fixed body. The locking element comprises a tab. The respective tab is elongated along the longitudinal direction. The tab is elastically connected to the fixed body. The tab comprises an upper wall. The tab comprises a lower wall. The respective lower wall is opposite the upper wall. The lower wall is configured to contact the coupling plate. The tab comprises a protrusion. The respective protrusion extends along the normal direction from the lower wall. The tab is configured to rotate about the transverse direction in response to abutting the inclined wall of the chamfer along the longitudinal direction during its movement from the uncoupled position to the coupled position. The tab is configured to pass beyond the lead-in surface and to be inserted above the coupling plate along the normal direction.

[0078] The tab facilitates insertion by reducing friction and ensuring a stable and secure grip between the coupling plate and the locking element. By virtue of the protrusion that abuts on the inclined wall of the chamfer, the sliding is smoother, and the forces required for insertion are reduced, minimizing the risk of damage to both the locking element and the coupling plate. The tab further ensures that the locking element is positioned and locked correctly in the coupled position.

[0079] In an embodiment, the coupling plate has a width along the transverse direction.

[0080] In an embodiment, the chamfer has a width along the transverse direction. In an embodiment, the width of the chamfer is equal to the width of the coupling plate.

[0081] In an embodiment, the width of the chamfer is less than the width of the coupling plate.

[0082] An increase of the width of the chamfer facilitates the insertion of the locking element. With a greater width, the surface that will come into contact between the inclined wall of the chamfer and the protrusion of the locking element increases, allowing smoother and easier sliding. Further, having a greater transverse width also allows working with wider tabs, which ensure an improved seal in the coupled position.

[0083] In an embodiment, the chamfer has a height along the normal direction.

[0084] In an embodiment, the protrusion has a height along the normal direction. In an embodiment, the height of the protrusion is greater than the height of the chamfer.

[0085] A greater height of the protrusion than the height of the chamfer facilitates the sliding of the protrusion along the inclined wall, making its insertion into the coupling plate easier and preventing snagging of the protrusion on the inclined wall of the chamfer.

[0086] In an embodiment, the protrusion extends along a protrusion direction. The respective protrusion direction is inclined with respect to the normal direction. The inclination between the protrusion direction and the normal direction defines a second inclination angle.

[0087] In an advantageous embodiment, the second inclination angle is equal to the first inclination angle.

[0088] The embodiment is advantageous in that it allows particularly smooth sliding of the protrusion on the inclined wall. Since both inclination angles are equal, the protrusion and the chamfer are perfectly aligned, facilitating uniform contact and reducing the risk of friction and snagging during sliding. This embodiment improves the insertion efficiency and the locking efficiency of the locking element. In an embodiment, the previously introduced slat assembly comprises the coupling assembly and the slat, according to one or more of the features described above. In other words, the coupling assembly comprises the connection element and the locking element and, for clarity of description, it was not initially introduced since an embodiment of the slat assembly of the present invention may also operate in the absence of the locking element.

[0089] According to an aspect of the present description, the present invention provides a sunshade.

[0090] The sunshade comprises a plurality of slat assemblies. The respective plurality of slat assemblies comprises a plurality of slats. The respective plurality of slats is configured to be moved along an adjustment direction. The adjustment direction is perpendicular to the longitudinal direction and to the transverse direction, respectively. The plurality of slat assemblies comprises a plurality of connection elements. The plurality of connection elements is configured to transmit the movement from a movement mechanism to the plurality of slats. Each connection element of said plurality of connection elements is configured to connect a respective slat of said plurality of slats to a movement mechanism. The sunshade comprises a movement mechanism. The respective movement mechanism is configured to transmit the movement, along the adjustment direction, to said plurality of slats. The sunshade comprises an actuator. The respective actuator is associated with the movement mechanism to move it.

[0091] In an embodiment, the sunshade comprises a plurality of coupling assemblies, according to any one of the features introduced above. Each slat of said plurality is connected to a respective pair of coupling assemblies of said plurality, to be connected to the movement mechanism. According to an aspect of the present description, the present invention provides a method for connecting a slat to a movement mechanism of the sunshade.

[0092] The method for connecting the slat to the movement mechanism comprises a step of arranging a connection element according to one or more of the features described above.

[0093] The method for connecting the slat to the movement mechanism comprises a step of arranging a slat according to one or more of the features described above.

[0094] The method for connecting the slat to the movement mechanism comprises a step of coupling the connection arm to the movement mechanism. The coupling between the connection arm and the movement mechanism occurs along a transverse direction.

[0095] The method for connecting the slat to the movement mechanism comprises a step of inserting the coupling plate into the longitudinal groove. The insertion of the coupling plate into the longitudinal groove occurs along a longitudinal direction. The respective longitudinal direction is perpendicular to the transverse direction.

[0096] The method for connecting the slat to the movement mechanism comprises a step of contacting the first sealing tooth and the first protrusion. The respective first sealing tooth is arranged at the first lateral surface of the coupling plate. The first sealing tooth protrudes in the transverse direction to interfere with the first protrusion.

[0097] The method for connecting the slat to the movement mechanism comprises a step of contacting the second sealing tooth and the second protrusion. The respective second sealing tooth is arranged at the second lateral surface of the coupling plate. The second sealing tooth protrudes in the transverse direction to interfere with the second protrusion.

[0098] In an embodiment, the method for connecting the slat to the movement mechanism comprises the use of a locking element. The locking element is arranged above the connection element along a normal direction. The respective normal direction is perpendicular to the longitudinal direction and to the transverse direction. The locking element is configured to inhibit sliding and to prevent extraction of the connection element from the longitudinal groove.

[0099] In an embodiment, the first protrusion comprises a first notch according to one or more of the features described above.

[0100] In an embodiment, the second protrusion comprises a second notch according to one or more of the features described above.

[0101] In an embodiment, during step of inserting the coupling plate into the groove, the first sealing tooth and the second sealing tooth abut the shoulder surfaces of the respective first and second notches, respectively, along the longitudinal direction in both sliding directions.

[0102] In an embodiment, the first protrusion comprises a first coupling cavity according to one or more of the features described above.

[0103] In an embodiment, the first protrusion elastically retracts along the transverse direction in response to an insertion force applied by the first sealing tooth. The retraction of the first protrusion allows the first sealing tooth to be inserted into the first coupling cavity. In an embodiment, the second protrusion comprises a second coupling cavity according to one or more of the features described above.

[0104] In an embodiment, the second protrusion elastically retracts along the transverse direction in response to an insertion force applied by the second sealing tooth. The retraction of the second protrusion allows the second sealing tooth to be inserted into the second coupling cavity.

[0105] According to an aspect of the present description, the present invention provides a method for coupling a coupling assembly to a slat for a sunshade.

[0106] In an embodiment, the method for coupling the coupling assembly to the slat comprises a step of providing a connection element, comprising one or more of the features described above.

[0107] In an embodiment, the method for coupling the coupling assembly to the slat comprises a step of arranging a locking element, comprising one or more of the features described above.

[0108] In an embodiment, the method for coupling the coupling assembly to the slat comprises a step of contacting the locking element with a chamfer of the coupling plate. The contact occurs between a protrusion of the locking element and an inclined wall of the chamfer.

[0109] According to another aspect of the description or another formulation of the present invention, there is provided a method for connecting a slat for a slat assembly comprising one or more of the features that in the present invention relate to the slat assembly to a movement mechanism for a sunshade comprising one or more of the features that in the present invention relate to the sunshade, comprising the following steps: step of preparing a connection element, step of preparing the slat, step of coupling the connection arm to the movement mechanism, step of inserting the coupling plate into the longitudinal groove, step of contacting the first sealing tooth and the first projection, to define a coupling between the coupling plate and the first projection, step of contacting the second sealing tooth and the second projection, to define a coupling between the coupling plate and the second projection,

[0110] In an embodiment, the method for coupling the coupling assembly to the slat comprises a step of sliding the locking element on the chamfer along the longitudinal direction. The protrusion of the locking element slides along the inclined wall of the chamfer.

[0111] In an embodiment, the method for coupling the coupling assembly to the slat comprises a step of deforming the locking element. A tab of the locking element elastically deforms along the normal direction. The elastic deformation occurs along the normal direction. The elastic deformation is induced by the sliding of the protrusion of the locking element on the inclined wall of the chamfer.

[0112] In an embodiment, the method of coupling the coupling assembly to the slat comprises a step of inserting the locking element on the coupling plate. The locking element is arranged in a coupled position with respect to the coupling plate.

[0113] This and other features will be more apparent from the following description of a preferred embodiment, shown merely by way of nonlimiting example in the accompanying drawings, in which: Figure 1 shows a view of a sunshade device, Figure 2 shows a view of a slat assembly, Figure 3 shows a view of a slat, Figure 4 shows a side view of a slat, Figure 5 shows a perspective view of an embodiment of a connection element, Figures 6 and 7 show a side view of an embodiment of a connection element, Figure 8 shows a plan view of the slat assembly, highlighting a step of inserting the connection element shown in Figure 5 into a longitudinal groove of a slat, Figure 8A shows a view of a notch in a protrusion, Figure 9 shows a plan view of the slat assembly comprising a locking element, Figure 10 shows a side view of an embodiment of a slat assembly comprising a locking element, Figure 11 shows a perspective view of an embodiment of a connection element, Figures 12 and 13 show a side view of an embodiment of a connection element, Figure 14 shows a plan view of the slat assembly highlighting a step of inserting the connection element shown in Figure 11 into a longitudinal groove of a slat, Figure 15 shows a side view of an embodiment of a slat assembly comprising a locking element, Figure 16 shows a side view of an embodiment of a slat assembly comprising a locking element, Figure 17 shows a front view of an alternative embodiment of a connection element, Figure 17A shows a side view of an alternative embodiment of a connection element, Figure 17B shows a plan view of the slat assembly, highlighting a step of inserting the connection element shown in Figure 17 into a longitudinal groove of a slat, Figure 17C shows a plan view of the slat assembly, highlighting the insertion of the connection element shown in Figure 17 into a longitudinal groove of a slat, Figure 18 shows a front view of an alternative embodiment of a connection element, Figure 18A shows a side view of an alternative embodiment of a connection element, Figure 18B shows a plan view of the slat assembly, highlighting a step of inserting the connection element shown in Figure 18 into a longitudinal groove of a slat, Figure 18C shows a plan view of the slat assembly highlighting the insertion of the connection element shown in Figure 18 into a longitudinal groove of a slat, Figure 19 shows a front view of an alternative embodiment of a connection element, Figure 19A shows a side view of an alternative embodiment of a connection element, Figure 19B shows a plan view of the slat assembly highlighting a step of inserting the connection element shown in Figure 19 into a longitudinal groove of a slat, Figure 19C shows a plan view of the slat assembly highlighting the insertion of the connection element shown in Figure 19 into a longitudinal groove of a slat, Figures 20A, 20B and 20C show, each in a side sectional view of the slat assembly, different insertion steps of the connection element according to an embodiment, Figure 20D shows a side sectional view of the slat assembly highlighting the insertion of the connection element according to an embodiment, Figure 21 shows a view of the coupling assembly and of the slat, Figures 22 and 23 show a view of an alternative embodiment of a connection element, Figure 24 shows a view of a chamfer of a coupling plate, Figures 25 and 26 show a view of a locking element, Figure 27 shows a view of a protrusion of a locking element.

[0114] The sunshade 10 comprises a plurality of slat assemblies 11, a movement mechanism 14 and an actuator 15.

[0115] The plurality of slat assemblies 11 comprises a plurality of slats 12. The plurality of slats 12 is configured to be moved along an adjustment direction R. The plurality of slats 12 is configured to be fixed with respect to a movement along a longitudinal direction L. The respective longitudinal direction L is perpendicular to the adjustment direction R.

[0116] The plurality of slat assemblies 11 comprises a plurality of connection elements 13. The plurality of connection elements 13 is connected to the plurality of slats 12. The plurality of connection elements 13 is configured to respectively connect the plurality of slats 12 with the movement mechanism 14. The plurality of connection elements 13 is configured to transmit the movement from the movement mechanism 14 to the plurality of slats 12.

[0117] The movement mechanism 14 is configured to transmit the movement along the adjustment direction R to the plurality of slats 12. The transmission of movement to the plurality of slats 12 occurs along the adjustment direction R.

[0118] The actuator 15 is associated with the movement mechanism 14 to move it.

[0119] In an embodiment, the sunshade comprises a plurality of coupling assemblies. Each slat 2 of said plurality is connected to a respective pair of coupling assemblies 5 of said plurality, to be connected to the movement mechanism 14.

[0120] The slat assembly 1 comprises a slat 2 and a connection element 3. The slat 2 is elongated along the longitudinal direction L. The slat 2 comprises a base wall 20 comprising a first end 20A and a second end 20B in the longitudinal direction L. The slat 2 comprises an inner surface 202 and an outer surface 201. The inner surface 202 is opposite the outer surface 201. The slat 2 comprises a first projection 21 and a second projection 22. The first projection 21 and the second projection 22 project from the inner surface 202 along a normal direction N. The respective normal direction N is perpendicular to the longitudinal direction L. The second projection 22 is spaced apart from the first projection 21 along a transverse direction T. The respective transverse direction T is perpendicular to the longitudinal direction L and to the normal direction N. The first projection 21 has a thickness SP1. The second projection 22 has a thickness SP2. The first projection 21 and the second projection 22 define a longitudinal groove SL.

[0121] In an embodiment, the first and second projections 21, 22 are straight (i.e., parallel to the normal direction N).

[0122] In an embodiment, the first and second projections 21, 22 move in the transverse direction T due to a bending of the first and second projections 21, 22, respectively, about the longitudinal direction L.

[0123] The connection element 3 comprises a coupling plate 30 and a connection arm 31. The coupling plate 30 has a height H5 along the normal direction N and a width L1 along the longitudinal direction L. The coupling plate 30 comprises a contact surface 310. The contact surface 310 faces the inner surface 202 of the slat 2. The coupling plate 30 comprises a rear surface 320, opposite the contact surface 320. The coupling plate 30 comprises a connection surface 313, perpendicular to the contact surface 310. The connection arm 31 is connected at the connection surface 313. The coupling plate 30 comprises a lead-in surface 314, opposite the connection surface 313, and having a height H5 along the normal direction N.

[0124] In an embodiment, the ratio between the height H5 and a distance D between the contact surface 310 and the rear surface 320 along the normal direction N is less than 0.95.

[0125] In an embodiment, the ratio between the height H5 and the distance D between the contact surface 310 and the rear surface 320 along the normal direction N is comprised between 0.75 and 0.85.

[0126] In an embodiment, the coupling plate 30 comprises a first lateral surface 311 and a second lateral surface 312.

[0127] In an embodiment, the first lateral surface 311 is in contact with the first projection 21.

[0128] In an embodiment, the second lateral surface 312 is in contact with the second projection 22.

[0129] The coupling plate 30 is configured to be inserted into the longitudinal groove SL.

[0130] In an embodiment, the coupling plate 30 comprises a first opening 321 and a second opening 322 on the rear surface 320.

[0131] The coupling plate 30 comprises at least one sealing tooth 301. The sealing teeth protrude in the transverse direction T to interfere with the first and / or the second projection 21, 22.

[0132] In an embodiment, the coupling plate 30 comprises a chamfer 315 inclined with respect to the normal direction N and the longitudinal direction L. The chamfer 315 comprises an inclined wall 315'. The chamfer 315 connects the rear surface 320 with the lead-in surface 314. In other words, the chamfer 315 extends along a chamfer direction DS1 inclined with respect to the normal direction N to define the first inclination angle α.

[0133] In an embodiment, the chamfer 315 is inclined with respect to the normal direction N to define a first inclination angle α. The first inclination angle α is comprised between 15° and 75°.

[0134] In an embodiment, the first inclination angle α is comprised between 10° and 85°.

[0135] In an embodiment, the chamfer 315 has a width L2 along the transverse direction T.

[0136] In an embodiment, the width L2 is equal to the width L1 of the coupling plate 30.

[0137] In an embodiment, the width L2 is smaller than the width L1 of the coupling plate 30.

[0138] In an embodiment, the chamfer 315 has a height H7 along the normal direction N.

[0139] The connection arm 31 is configured to connect to the movement mechanism 14. The connection arm 31 is elongated along the transverse direction T. The connection arm 31 comprises a first end 31A and a second end 31B in the transverse direction T. At the first end 31A and at the second end 31B there are a first connector 330 and a second connector 331, respectively. The first and second connectors 330, 331 are configured to be connected to the movement mechanism 14.

[0140] In an embodiment, the connection element 3 comprises a plurality of sealing teeth.

[0141] In an embodiment, the coupling plate 30 comprises a first sealing tooth 301 (defining said at least one sealing tooth introduced above) and a second sealing tooth 302. The first sealing tooth 301 is arranged at the first lateral surface 311.

[0142] In an embodiment, the first sealing tooth 301 comprises a first inclined surface 301', inclined and converging towards the contact surface 310. The second sealing tooth 302 is arranged at the second lateral surface 312.

[0143] In an embodiment, the second sealing tooth 302 comprises a second inclined surface 302' inclined and converging towards the contact surface 310.

[0144] The first and second sealing teeth 301, 302 are protruding in the transverse direction T to interfere with the first and second projections 21, 22, respectively.

[0145] In an embodiment, the coupling plate 30 comprises a first sealing tooth 301, a second sealing tooth 302, a third sealing tooth 303 and a fourth sealing tooth 304. The first and third sealing tooth 301, 303 are arranged on the first lateral surface 311 and the second and fourth sealing tooth 302, 304 are arranged on the second lateral surface 312. The present embodiment is advantageous in that it makes it possible to obtain a solid configuration of the coupling system.

[0146] In an embodiment, the connection element 3 comprises one or more sealing teeth on the first lateral surface 311.

[0147] In an embodiment, the connection element 3 comprises one or more sealing teeth on the second lateral surface 312.

[0148] In an embodiment, one or more sealing teeth are welded to the connection element 3 as filler material after the manufacture of the connection element 3 itself.

[0149] The sealing tooth has a variable thickness along the transverse direction T. The thickness of the sealing tooth defines the shape of the sealing tooth.

[0150] In an embodiment, the first sealing tooth 301 has a variable thickness S1 along the transverse direction T.

[0151] In an embodiment, the second sealing tooth 302 has a variable thickness S2 along the transverse direction T.

[0152] In an embodiment, the first, second, third and fourth sealing teeth 301, 302, 303, 304 have four variable thicknesses S1, S2, S3, S4, respectively, along the transverse direction T.

[0153] In an embodiment, the thickness of the sealing tooth increases along the transverse direction T in a direction exiting the first or the second lateral surface 311, 312.

[0154] In an embodiment, the thickness of the sealing tooth decreases along the transverse direction T in a direction exiting the first or the second lateral surface 311, 312.

[0155] In an embodiment, the thickness of the sealing tooth initially decreases along the transverse direction T in a direction exiting the first or the second lateral surface 311, 312 and subsequently increases along the transverse direction T in a direction exiting the first or second lateral surface 311, 312. In an embodiment, the thickness of the sealing tooth initially increases along the transverse direction T in a direction exiting the first or the second lateral surface 311, 312 and subsequently decreases along the transverse direction T in a direction exiting the first or the second lateral surface 311, 312.

[0156] The sealing tooth has a variable height along the normal direction N. The height of the sealing tooth defines the shape of the sealing tooth.

[0157] In an embodiment, the first sealing tooth 301 has a variable height H1 along the normal direction N.

[0158] In an embodiment, the second sealing tooth 302 has a variable height H2 along the normal direction N.

[0159] In an embodiment, the first, second, third and fourth sealing teeth 301, 302, 303, 304 have four variable heights H1, H2, H3 and H4, respectively, along the transverse direction N.

[0160] In an embodiment, the height of the sealing tooth decreases along the normal direction N in a direction exiting the inner surface 202 of the slat 2. In an embodiment, the height of the sealing tooth increases along the normal direction N in a direction exiting the inner surface 202 of the slat 2. In an embodiment, the height of the sealing tooth initially decreases along the normal direction N in a direction exiting the inner surface 202 of the slat 2 and subsequently increases along the normal direction N in a direction exiting the inner surface 202 of the slat 2.

[0161] In an embodiment, the height of the sealing tooth initially increases along the normal direction N in a direction exiting the inner surface 202 of the slat 2 and subsequently decreases along the normal direction N in a direction exiting the inner surface 202 of the slat 2.

[0162] Preferably, the sealing teeth have a hardness greater than or equal to the hardness of the material of which the first and second projections 21, 22 are made.

[0163] In an embodiment, the first sealing tooth 301 has a hardness greater than the hardness of the material of which the first and second projections 21, 22 are made.

[0164] In an embodiment, the first sealing tooth 301 has a hardness equal to the hardness of the material of which the first and second projections 21, 22 are made.

[0165] In an embodiment, the second sealing tooth 302 has a greater hardness than the hardness of the material of which the first and second projections 21, 22 are made.

[0166] In an embodiment, the second sealing tooth 302 has a hardness equal to the hardness of the material of which the first and second projections 21, 22 are made.

[0167] In an embodiment, the first projection 21 comprises a first notch 210. The first notch 210 comprises a first shoulder surface 211 and a second shoulder surface 212. The first and second shoulder surfaces 211, 212 are respectively spaced apart along the longitudinal direction L. The first and second shoulder surfaces 211, 212 are configured to abut against the first sealing tooth 301 along the longitudinal direction L in both sliding directions V1, V2. The sliding directions V1, V2 are the insertion and extraction directions of the connection element 3 from the longitudinal groove SL. The first cut 210 defines a housing for the first sealing tooth 301.

[0168] In an embodiment, the first notch 210 is spaced apart from the first end 20A in the longitudinal direction L by a first connection distance DC1. The first connection distance DC1 is parallel to the longitudinal direction L. The first connection distance DC1 identifies the position of the first sealing tooth 301 on the first lateral surface 311.

[0169] In an embodiment, the first connection distance DC1 is comprised between 1 mm and 10 cm.

[0170] In an embodiment, the first connection distance DC1 is 1 mm.

[0171] In an embodiment, the first notch 210 has a first notch depth D1.

[0172] In an embodiment, the first notch depth D1 is equal to the thickness SP1 of the first projection 21. In other words, the first notch 210 is open on both sides.

[0173] In an embodiment, the first notch depth D1 is less than the thickness SP1 of the first projection 21. In other words, the first notch 210 is open only on the side facing the longitudinal groove SL.

[0174] In an embodiment, the second projection 22 comprises a second notch 220. The second notch 220 comprises a third shoulder surface 221 and a fourth shoulder surface 222. The third and fourth shoulder surfaces 221, 222 are respectively spaced apart along the longitudinal direction L. The third and fourth shoulder surfaces 221, 222 are configured to abut against the second sealing tooth 302 along the longitudinal direction L in both sliding directions V1, V2. The second notch 220 defines a housing for the second sealing tooth 302.

[0175] In an embodiment, the second notch 220 is spaced apart from the first end 20A in the longitudinal direction L by a second connection distance DC2. The second connection distance DC2 is parallel to the longitudinal direction L. The second connection distance DC2 identifies the position of the second sealing tooth 302 on the second lateral surface 312. The first notch 210 and the second notch 220 are respectively spaced apart along the transverse direction T by a distance equal to the transverse width of the longitudinal groove SL.

[0176] In an embodiment, the second connection distance DC2 is comprised between 1 mm and 10 cm.

[0177] In an embodiment, the second connection distance DC2 is 1 mm.

[0178] In an embodiment, the first connection distance DC1 is equal to the second connection distance DC2.

[0179] In an embodiment, the first connection distance DC1 is different from the second connection distance DC2.

[0180] In an embodiment, the second notch 220 has a second notch depth D2.

[0181] In an embodiment, the second notch depth D2 is equal to the thickness SP2 of the second projection 22. In other words, the second notch 220 is open on both sides.

[0182] In an embodiment, the second notch depth D2 is smaller than the thickness SP2 of the second projection 22. In other words, the second notch 220 is open only on the side that faces the longitudinal groove SL.

[0183] In an embodiment, the slat assembly 1 comprises a locking element 4. The locking element 4 has a height H6 along the normal direction N. The locking element 4 comprises a first and a second coupling end 41 and 42. The first coupling end 41 is spaced apart from the second coupling end 42 along the transverse direction T. The first coupling end 41 is configured to couple to the first projection 21. The second coupling end 42 is configured to couple to the second projection 22. The locking element 4 is arranged above the connection element 3 along the normal direction N. The locking element 4 is movable along the longitudinal direction L between an uncoupled position and a coupled position. The uncoupled position is obtained by misaligning the locking element 4 with respect to the coupling plate 30 along the normal direction N. The coupled position is obtained by aligning the locking element 4 along the normal direction N with respect to the coupling plate 30 to prevent an extraction of the connection element 3 along the normal direction N. The locking element 4 is configured to inhibit the sliding of the connection element 3 along the sliding directions V1, V2. The locking element 4 is configured to prevent the unintentional extraction of the connection element 3 from the longitudinal groove SL during the movement of the slat 2.

[0184] In an embodiment, the locking element 4 comprises a flat upper surface 43.

[0185] In an embodiment, the sum of the height H of the coupling plate 30 and the height H6 of the locking element 4 in the coupled position is smaller than 0.85 cm, preferably smaller than 0.8 cm, even more preferably smaller than 0.75 cm.

[0186] In an embodiment, the locking element 4 comprises a fixed body 45.

[0187] In an embodiment, the locking element 4 comprises a tab 44 elastically connected to the fixed body 45 and elongated along the longitudinal direction L. The tab 44 comprises an upper wall 440, a lower wall 441, and a protrusion SP. The lower wall 441 is opposite the upper wall 440 and configured to be in contact with the coupling plate 30. The protrusion SP extends along the normal direction N from the lower wall 441. The protrusion SP has a height H8 along the normal direction N. The tab 44 is configured to rotate about the transverse direction T in response to abutment on an inclined wall 315' of the chamfer 315 along the longitudinal direction L during its movement from the uncoupled position to the coupled position. The tab 44 is configured to pass beyond the lead-in surface 314 and to be inserted above the coupling plate 30 along the normal direction N.

[0188] In an embodiment, the height H8 of the protrusion SP is greater than the height H7 of the chamfer 315.

[0189] In an embodiment, the protrusion SP extends along a protrusion direction DS2 inclined with respect to the normal direction N. The inclination between the protrusion direction DS2 and the normal direction N defines a second inclination angle β.

[0190] According to an advantageous embodiment, the second inclination angle β is equal to the first inclination angle α.

[0191] The previously described connection element 3 defines a first connection element 3A. The respective first connection element 3A is connected to the slat 2 at the first end 20A in the longitudinal direction L.

[0192] In an embodiment, the slat assembly 2 comprises an additional connection element, defining a second connection element 3B. The second connection element 3B is connected to the slat 2 at the second end 20B in the longitudinal direction L.

[0193] One or more of the features described related to the connection element 3 are also applicable to the first and second connection elements 3A, 3B mentioned.

[0194] The first and second connection elements 3A, 3B allow coupling the slat 2 to the movement mechanism 14 of the sunshade 10.

[0195] In an embodiment, the first projection 21 comprises a first coupling cavity 230 extending along the transverse direction T.

[0196] In an embodiment, the first coupling cavity 230 extends through the first projection 21.

[0197] In an embodiment, the first coupling cavity 230 is blind. The definition of blind coupling cavity is already present in the description and reference is made thereto in its entirety.

[0198] In an embodiment, the first coupling cavity 230 has a first cavity depth P1. In an embodiment, the first cavity depth P1 is equal to the thickness SP1 of the first projection 21. In other words, the first coupling cavity 230 is open on both sides.

[0199] In an embodiment, the first cavity depth is smaller than the thickness SP1 of the first projection 21. In other words, the first coupling cavity 230 is open only on the side facing the longitudinal groove SL.

[0200] In an embodiment, the second projection 22 comprises a second coupling cavity 240 extending along the transverse direction T.

[0201] In an embodiment, the second coupling cavity 240 extends through the second projection 22.

[0202] In an embodiment, the second coupling cavity 240 is blind.

[0203] In an embodiment, the second coupling cavity 240 has a second cavity depth P2.

[0204] In an embodiment, the second cavity depth P2 is equal to the thickness SP2 of the second projection 22. In other words, the second coupling cavity 240 is open on both sides.

[0205] In an embodiment, the second cavity depth P2 is smaller than the thickness SP2 of the second projection 22. In other words, the second coupling cavity 240 is open only on the side that faces the longitudinal groove SL.

[0206] In an embodiment, the first projection 21 is configured to elastically retract along the transverse direction T in response to an insertion force F applied by the first sealing tooth 301, so as to allow an insertion of the first sealing tooth 301 into the first coupling cavity 230.

[0207] In an embodiment, the second projection 22 is configured to elastically retract along the transverse direction T in response to the insertion force F applied by the second sealing tooth 302, so as to allow an insertion of the second sealing tooth 302 into the second coupling cavity 240.

[0208] In an embodiment, the first sealing tooth 301 is configured to be inserted into the first coupling cavity 230.

[0209] In an embodiment, the second sealing tooth 302 is configured to be inserted into the second coupling cavity 240.

[0210] In an embodiment, a coupling assembly 5 comprises the connection element 3, comprising one or more of the features described above, and the locking element 4, comprising one or more of the features described above.

[0211] In an embodiment, the previously introduced slat assembly 1 comprises the coupling assembly 5 and the slat 2, according to one or more of the features described above. In other words, the coupling assembly 5 comprises the connection element 3 and the locking element 4 and, for clarity of the description, it was not initially introduced since an embodiment of the slat assembly 1 of the present invention may also operate in the absence of the locking element 4.

[0212] According to an embodiment, the coupling plate 30 is configured to be inserted into the longitudinal groove SL in the normal direction N as a result of an insertion pressure P. The respective insertion pressure P is configured to be exerted by a user on the coupling plate 30 in the normal direction N. The first and second lateral surfaces 311, 312 are configured to come into contact respectively with the first and second projections 21, 22. The contact between the first and second lateral surfaces 311, 312 and the respective first and second projections 21, 22 generates a decomposition of the insertion pressure P into two insertion forces F, oriented along the transverse direction T. The first projection 21 is configured to move in the transverse direction T as a result of a bending of the first projection 21 about the longitudinal direction L, in response to the insertion force F. The second projection 22 is configured to move in the transverse direction T as a result of a bending of the second projection 22 about the longitudinal direction L, in response to the insertion force F. The first sealing tooth 301 is configured to contact the first projection 21, at the first inclined surface 301', inclined and converging toward the contact surface 310 (as previously described in an embodiment). The contact between the first projection 21 and the first inclined surface 301' determines the decomposition of the insertion pressure P. The first projection 21 is configured to bend increasingly, as the connection element 3 is pushed along the normal direction N. The first sealing tooth 301 is configured to approach the first coupling cavity 230, in response to the bending of the first projection 21. The first sealing tooth 301 is configured to align transversely with the first coupling cavity 230. The first sealing tooth 301 is configured to insert into the first coupling cavity 230 in the transverse direction T by virtue of an elastic return due to the bending of the first projection 21, when the first sealing tooth 301 is aligned with the first coupling cavity 230. In other words, the first projection 21 is configured to return to its original position, once the first sealing tooth 301 does not transversely abut the first projection 21. The first sealing tooth 301 is configured to abut the walls of the first coupling cavity 230 along the longitudinal direction L in both sliding directions V1, V2 inhibiting the longitudinal and normal sliding of the connection element 3 during the movement of the slat 2. The second sealing tooth 302 is configured to contact the second projection 22, at the second inclined surface 302' inclined and converging toward the contact surface 310 (as described previously in an embodiment). The contact between the second projection 22 and the second inclined surface 302' determines the decomposition of the insertion pressure P. The second projection 22 is configured to bend increasingly, as the connection element 3 is pushed along the normal direction N. The second sealing tooth 302 is configured to approach the second coupling cavity 240, in response to the bending of the second projection 22. The second sealing tooth 302 is configured to align transversely with the second coupling cavity 240. The second sealing tooth 302 is configured to insert into the second coupling cavity 240 in the transverse direction T as a result of an elastic return due to the bending of the second projection 22, when the second sealing tooth 302 is aligned with the second coupling cavity 240. The second projection 22 is configured to return to its original position, once the second sealing tooth 302 does not transversely abut the second projection 22. The second sealing tooth 302 is configured to abut the walls of the second coupling cavity 240 along the longitudinal direction L and the normal direction N in both sliding directions V1, V2 inhibiting the sliding of the connection element 3 during the movement of the slat 2.

[0213] In a first embodiment, the connection element 3 is configured to insert into the longitudinal groove SL as a result of an insertion force G. The insertion force G is applied in the longitudinal direction L and is oriented in the insertion direction V2. The connection element 3 comprises a first lateral coupling element 32 and a second lateral coupling element 33. The first lateral coupling element 32 and the second lateral coupling element 33 are joined to the body of the coupling plate 30 at one end thereof. The first and second lateral coupling elements 32, 33 extend along the longitudinal direction L progressively moving away from the body of the coupling plate 30 so as to be spaced apart from the contact surface 310 in the transverse direction T at the end opposite to that joined to the body of the coupling plate 30. The first sealing tooth 301 is arranged at the first lateral coupling element 32 in its end opposite to that joined to the body of the coupling plate 30. The first sealing tooth 301 is connected to the coupling plate 30 by means of the first lateral coupling element 32 which bends elastically. The first sealing tooth 301 comprises a first inclined surface 301' with respect to the first coupling element 32. The first inclined surface 301' is configured to contact the first projection 21. The contact between the first inclined surface 301' and the first projection 21 results in a decomposition of the insertion force G into the insertion force F. The first lateral coupling element 32 is configured to bend by rotating about the normal direction N as a result of the insertion force F oriented along the transverse direction T. The first sealing tooth 301 is elastically connected to the coupling plate 30 to retract along the transverse direction T as a result of the insertion force F, in response to the bending of the first lateral coupling element 32. The first sealing tooth 301 is configured to insert into the first coupling cavity 230. The second sealing tooth 302 is arranged at the second lateral coupling element 33 in its end opposite that joined to the body of the coupling plate 30. The second sealing tooth 302 is connected to the coupling plate 30 by means of the second lateral coupling element 33 which bends elastically. The second sealing tooth 302 comprises a second inclined surface 302' with respect to the second coupling element 33. The second inclined surface 302' is configured to contact the second projection 22. The contact between the second inclined surface 302' and the second projection 22 generates a decomposition of the insertion force G into the insertion force F. The second lateral coupling element 33 is configured to bend by rotating about the normal direction N due to the insertion force F oriented along the transverse direction T. The second sealing tooth 302 is elastically connected to the coupling plate 30 to retract along the transverse direction T due to the insertion force F, in response to the bending of the second lateral coupling element 33. The second sealing tooth 302 is configured to be inserted into the second coupling cavity 240. The coupling plate 30 comprises a first upper flap 34 and a second upper flap 35. The first and second upper flaps 34, 35 are secured to the first and second sealing teeth 301, 302, respectively. The first and second upper flaps 34, 35 are configured to retract along the transverse direction T due to the extraction force E. The extraction force E is applied in the transverse direction T on the first and second upper flaps 34, 35. In an embodiment, the extraction force E is applied by a user in the transverse direction T on the first and second upper flaps 34, 35. The first and second sealing teeth 301, 302 are configured to retract along the transverse direction T, in response to the retraction of the first and second upper flaps 34, 35. The first and second sealing teeth 301, 302 are configured to disengage from the first and second coupling cavities 230, 240, respectively. The connection element 3 is configured to disengage from the longitudinal groove SL, in response to the extraction of the first and second sealing teeth 301, 302 from the respective first and second coupling cavities 230, 240.

[0214] In a second embodiment, the first lateral surface 311 comprises a first housing 340 in which a first spring 36 is present. The first sealing tooth 301 is connected to the respective first spring 36. The first inclined surface 301' of the first sealing tooth 301 is configured to contact the first projection 21. The contact between the first inclined surface 301' and the first projection 21 generates a decomposition of the insertion force G into the insertion force F. The first sealing tooth 301 is connected to the coupling plate 30 to retreat along the transverse direction T, in response to the insertion force F. The first spring 36 is configured to deform along the transverse direction T, in response to the backward movement of the first sealing tooth 301. The first sealing tooth 301 is configured to be inserted into and / or extracted from the first coupling cavity 230. The second lateral surface 312 comprises a second housing 341 in which a second spring 37 is present. The second sealing tooth 302 is connected to the respective second spring 37. The second inclined surface 302' of the second sealing tooth 302 is configured to contact the second projection 22. The contact between the second inclined surface 302' and the second projection 22 generates a decomposition of the insertion force G into the insertion force F. The second sealing tooth 302 is connected to the coupling plate 30 to retract along the transverse direction T, in response to the insertion force F. The second spring 37 is configured to deform along the transverse direction T, in response to the retraction of the second sealing tooth 302. The second sealing tooth 302 is configured to be inserted into and / or extracted from the second coupling cavity 240. The coupling plate 30 comprises the first upper flap 34 and the second upper flap 35. The first and second upper flaps 34, 35 are configured to retract along the transverse direction T due to the extraction force E. The first and second sealing teeth 301, 302 are configured to retract along the transverse direction T, in response to the retraction of the first and second upper flaps 34, 35. The first and second springs 36, 37 are configured to deform along the transverse direction T, in response to the retraction of the first and second sealing teeth 301, 302. The first and second sealing teeth 301, 302 are configured to be extracted from the first and second coupling cavities 230. 240. The first and second sealing teeth 301, 302 are configured to be inserted into the first and second housings 340, 341.

[0215] In a third embodiment, the connection element 3 comprises a housing cavity 351 in which a leaf spring 350 is inserted. The leaf spring 350 is connected to the first and second sealing teeth 301, 302, respectively (or is made in one piece with the first and second sealing teeth 301, 302). The first and second sealing teeth 301, 302 are elastically connected to the coupling plate 30 so as to retract along the transverse direction T, in response to the insertion force F. The leaf spring 350 is configured to deform (i.e., to bend by rotating about the direction N as a result of the insertion force F) along the transverse direction T, in response to the retraction of the first and second sealing teeth 301, 302. The first and second sealing teeth 301, 302 are configured to be inserted into and / or extracted from the first and second coupling cavities 230, 240. The coupling plate 30 comprises the first upper flap 34 and the second upper flap 35. The first and second upper flaps 34, 35 are configured to retract along the transverse direction T as a result of the extraction force E. The first and second sealing teeth 301, 302 are configured to be inserted into the coupling cavity 351.

[0216] In an embodiment, the method for connecting a slat 2 to a movement mechanism 14 comprises a step of preparing a connection element 3 according to one or more of the features described above.

[0217] In an embodiment, the method for connecting the slat 2 to the movement mechanism 14 comprises a step of preparing a slat 2 according to one or more of the features described above.

[0218] In an embodiment, the method for connecting the slat 2 to the movement mechanism 14 comprises a step of coupling the connection arm 31 to the movement mechanism 14. The coupling between the connection arm 31 and the movement mechanism 14 occurs in the transverse direction T. The connection mode occurs by means of the connection of the first connector 330 and the second connector 331 to the movement mechanism 14.

[0219] In an embodiment, the method for connecting the slat 2 to the movement mechanism 14 comprises a step of inserting the coupling plate 30 into the longitudinal groove SL. The insertion of the coupling plate 30 into the longitudinal groove SL occurs in the longitudinal direction L. The coupling plate 30 slides along the sliding direction V2 in the longitudinal groove SL. In an embodiment, the method for connecting the slat 2 to the movement mechanism 14 comprises a step of contacting the first sealing tooth 301 and the first projection 21. The first sealing tooth 301 is inserted in the first notch 210. The first and second shoulder surfaces 211, 212 abut the first sealing tooth 301 along the longitudinal direction L in both sliding directions V1, V2. The sliding directions V1, V2 are parallel to the longitudinal direction L. The first and second shoulder surfaces 211, 212 inhibit sliding and prevent extraction of the connection element 3 during movement of the slat 2.

[0220] In an embodiment, the method for connecting the slat 2 to the movement mechanism 14 comprises a step of contacting the second sealing tooth 302 and the second projection 22. The second sealing tooth 302 is inserted in the second notch 220. The third and fourth shoulder surfaces 221, 222 abut the second sealing tooth 302 along the longitudinal direction L in both sliding directions V1, V2. The third and fourth shoulder surfaces 221, 222 inhibit the sliding of the connection element 3 during the movement of the slat 2.

[0221] In an embodiment, the connection method of the slat 2 to the movement mechanism 14 comprises the use of the locking element 4. The locking element 4 is arranged along the normal direction N. The first coupling end 41 is coupled to the first projection 21 and the second coupling end 42 is coupled to the second projection 22. The locking element 4 is slid along the sliding directions V1, V2 so as to be arranged above the connection element 3, so as to prevent the extraction of the connection element 3 from the longitudinal groove SL during the movement of the slat 2.

[0222] According to a further embodiment, the method for connecting the slat 2 to the movement mechanism 14 comprises a step of inserting the coupling plate 30 into the longitudinal groove SL. The coupling plate 30 is arranged at the longitudinal groove SL. The insertion of the coupling plate 30 into the longitudinal groove SL occurs in the normal direction N as a result of an insertion pressure P. The respective insertion pressure P is exerted by a user on the coupling plate 30 in the normal direction N. The first and second lateral surfaces 311, 312 of the coupling plate 30 contact the first and second projections 21, 22, respectively. When the first and second lateral surfaces 311, 312 contact the first and second projections 21, 22, the insertion pressure P is decomposed into two insertion forces F along the transverse direction T. The first projection 21 moves in the transverse direction T as a result of a bending of the first projection 21 about the longitudinal direction L, in response to the insertion force F. The second projection 22 moves in the transverse direction T as a result of a bending of the second projection 22 about the longitudinal direction L, in response to the insertion force F. In particular, when the first lateral surface 311 comes into contact with the first projection 21, it is the first sealing tooth 301 that contacts the first projection 21, at the first inclined surface 301' inclined and converging toward the contact surface 310 (as described previously in an embodiment). Indeed, the decomposition of the insertion pressure P, which occurs when the first projection 21 is contacted, results from the inclination of the first sealing tooth 301. As the connection element 3 is pushed along the normal direction N, the first projection 21 bends increasingly and the first sealing tooth 301 approaches the first coupling cavity 230. Once the first sealing tooth 301 is transversely aligned with the first coupling cavity 230, the first sealing tooth 301 inserts into the first coupling cavity 230 in the transverse direction T, also as a result of an elastic return due to the bending of the first projection 21 which, once the first sealing tooth 301 no longer contacts it transversely undergoes a reverse rotation to return to its original position. The first sealing tooth 301 abuts the walls of the first coupling cavity 230 along the longitudinal direction L in both sliding directions V1, V2 inhibiting the sliding of the connection element 3 during the movement of the slat 2. In particular, when the second lateral surface 312 comes into contact with the second projection 22, it is the second sealing tooth 302 that contacts the second projection 22, at the second inclined surface 302' inclined and converging towards the contact surface 310 (as described previously in an embodiment). In fact, the decomposition of the insertion pressure P, which occurs when the second projection 22 is contacted, is determined by the inclination of the second sealing tooth 302. As the connection element 3 is pushed along the normal direction N, the second projection 22 bends increasingly and the second sealing tooth 302 approaches the second coupling cavity 240. Once the second sealing tooth 302 is transversely aligned with the second coupling cavity 240, the second sealing tooth 302 is inserted into the second coupling cavity 240 along the transverse direction T, also due to an elastic return resulting from the bending of the second projection 22 which, once the second sealing tooth 302 no longer abuts it transversely, performs a reverse rotation to return to its original position. The second sealing tooth 302 abuts on the walls of the second coupling cavity 240 along the longitudinal direction L in both sliding directions V1, V2 inhibiting the sliding of the connection element 3 during the movement of the slat 2.

[0223] In a further embodiment, the method for connecting the slat 2 to the movement mechanism 14 comprises a step of contacting one or more sealing teeth arranged on the first lateral surface 311 and the first projection 21. The sealing tooth or teeth protrude in the transverse direction T to interfere with the first projection 21. The second lateral surface 312, free of sealing teeth, upon coming into contact with the second projection 22 generates a retaining friction by virtue of a lateral thrust in the transverse direction T. The interference and the retaining friction that are generated inhibit the sliding of the connection element 3 in the longitudinal direction L along the sliding directions V1, V2. The same operation may be obtained by preparing one or more sealing teeth arranged on the second lateral surface 312, where there will be interference and by working by friction between the walls at the first lateral surface 311.

[0224] According to a first embodiment, the method for connecting the slat 2 to the movement mechanism 14 comprises a step of inserting the connection element 3 into the longitudinal groove SL. The insertion of the connection element 3 into the longitudinal groove SL occurs in the longitudinal direction L by virtue of the insertion force G. The first and second inclined surfaces 301', 302' contact the first and second projections 21, 22, respectively. When the first and second inclined surfaces 301', 302' contact the first and second projections 21, 22, the insertion force G is decomposed into two insertion forces F. The first and second lateral coupling elements 32, 33 are bent, rotating about the normal direction N by virtue of the insertion forces F oriented along the transverse direction T. The first and second sealing teeth 301, 302 retreat along the transverse direction T by virtue of the insertion forces F, in response to the bending of the first and second lateral coupling elements 32, 33. The connection element 3 slides along the sliding direction V2 in the longitudinal groove SL. The method for connecting the slat 2 to the movement mechanism 14 comprises a step of contacting the first sealing tooth 301 and the first coupling cavity 230. Once the first sealing tooth is transversely aligned with the first coupling cavity 230, the first sealing tooth 301 advances in the transverse direction T by virtue of the elastic force due to the compression determined by the insertion force F. The first sealing tooth 301 is inserted into the first coupling cavity 230. The first sealing tooth 301 abuts the walls of the first coupling cavity 230 along the longitudinal direction L in both sliding directions V1, V2 inhibiting the sliding of the connection element 3 during the movement of the slat 2. The method for connecting the slat 2 to the movement mechanism 14 comprises a contact step between the second sealing tooth 302 and the second coupling cavity 240. Once the second sealing tooth 302 is transversely aligned with the second coupling cavity 240, the second sealing tooth 302 advances in the transverse direction T by virtue of the elastic force due to the compression determined by the insertion force F. The second sealing tooth 302 is inserted into the second coupling cavity 240. The second sealing tooth 302 abuts on the walls of the second coupling cavity 240 along the longitudinal direction L in both sliding directions V1, V2 inhibiting the sliding of the connection element 3 during the movement of the slat 2. The method for connecting the slat 2 to the movement mechanism 14 comprises a step of disassembling the connection element 3. The disassembly of the connection element 3 occurs in the longitudinal direction L. The first and second upper flaps 34, 35 retract along the transverse direction T by virtue of the extraction force E. In response to the retraction of the first and second upper flaps 34, 35, the first and second sealing teeth 301, 302 retract along the transverse direction T disengaging from the respective first and second coupling cavities 230, 240. The connection element 3 may be extracted by sliding along the sliding direction V1 in the longitudinal groove SL or by lifting it along the normal direction N.

[0225] According to a second embodiment, the method for connecting the slat 2 to the movement mechanism 14 comprises a step of inserting the connection element 3 into the longitudinal groove SL by virtue of the insertion force G. The insertion of the connection element 3 into the longitudinal groove SL occurs in the longitudinal direction L. The first and second inclined surfaces 301', 302' contact the first and second projections 21, 22, respectively. When the first and second inclined surfaces 301', 302' contact the first and second projections 21, 22, the insertion force G is decomposed into two insertion forces F. The first and second sealing teeth 301, 302 retract along the transverse direction T into the respective first and second housings 340, 341, in response to the insertion force F. The first and second springs 36, 37 are deformed along the transverse direction T, in response to the retraction of the first and second sealing teeth 301, 302. The connection element 3 slides along the sliding direction V2 in the longitudinal groove SL. The method for connecting the slat 2 to the movement mechanism 14 comprises a step of contacting the first sealing tooth 301 and the first coupling cavity 230. Once the first sealing tooth 301 is transversely aligned with the first coupling cavity 230, the first spring 36 is deformed along the transverse direction T due to the elastic force resulting from the compression determined by the insertion force F and the first sealing tooth 301 advances along the transverse direction T inserting into the first coupling cavity 230. The first sealing tooth 301 abuts the walls of the first coupling cavity 230 along the longitudinal direction L in both sliding directions V1, V2 inhibiting the sliding of the connection element 3 during the movement of the slat 2. The method for connecting the slat 2 to the movement mechanism 14 comprises a contact step between the second sealing tooth 302 and the second coupling cavity 240. Once the second sealing tooth 302 is transversely aligned with the second coupling cavity 240, the second spring 37 is deformed along the transverse direction T due to the elastic force resulting from the compression determined by the insertion force F and the second sealing tooth 302 advances along the transverse direction T inserting into the second coupling cavity 240. The second sealing tooth 302 abuts on the walls of the second coupling cavity 240 along the longitudinal direction L in both sliding directions V1, V2 inhibiting the sliding of the connection element 3 during the movement of the slat 2. The method for connecting the slat 2 to the movement mechanism 14 comprises a step of disassembling the connection element 3. The disassembly of the connection element 3 occurs along the longitudinal direction L. The first and second upper flaps 34, 35 retract along the transverse direction T due to the extraction force E. The first and second sealing teeth 301, 302 retract along the transverse direction T, in response to the retraction of the first and second flaps 34, 35. The first and second springs 36, 37 are deformed along the transverse direction T, in response to the retraction of the first and second sealing teeth 301, 302. The first and second sealing teeth 301, 302 retract along the transverse direction T disengaging from the first and second coupling cavities 230, 240, respectively, and consequently inserting into the respective first and second housings 340, 341. The connection element 3 may be extracted by sliding along the sliding direction V1 in the longitudinal groove SL or by lifting it along the normal direction N.

[0226] According to a third embodiment, the method for connecting the slat 2 to the movement mechanism 14 comprises a step of inserting the connection element 3 into the longitudinal groove SL due to the insertion force G. The insertion of the connection element 3 into the longitudinal groove SL occurs along the longitudinal direction L. The first and second inclined surfaces 301', 302' contact the first and second projections 21, 22, respectively. When the first and second inclined surfaces 301', 302' contact the first and second projections 21, 22, the insertion force G is resolved into two insertion forces F. The first and second sealing teeth 301, 302 retract along the transverse direction T and insert into the coupling cavity 351, in response to the insertion force F. The leaf spring 850 deforms (i.e., bends by rotating about the direction N due to the insertion force F) along the transverse direction T, in response to the retraction of the first and second sealing teeth 301, 302. The connection element 3 slides along the sliding direction V2 in the longitudinal groove SL. The method for connecting the slat 2 to the movement mechanism 14 comprises a step of contacting the first sealing tooth 301 and the first coupling cavity 230. Once the first sealing tooth 301 is transversely aligned with the first coupling cavity 230, the leaf spring 350 deforms (i.e., bends by rotating about the direction N due to the insertion force F) along the transverse direction T due to the elastic force resulting from the compression determined by the insertion force F and the first sealing tooth 301 advances along the transverse direction T inserting into the first coupling cavity 230. The first sealing tooth 301 abuts the walls of the first coupling cavity 230 along the longitudinal direction L in both sliding directions V1, V2 inhibiting the sliding of the connection element 3 during the movement of the slat 2. The method for connecting the slat 2 to the movement mechanism 14 comprises a contact step between the second sealing tooth 302 and the second coupling cavity 240. Once the second sealing tooth 302 is transversely aligned with the second coupling cavity 240, the leaf spring 350 deforms (i.e., bends by rotating about the direction N due to the insertion force F) along the transverse direction T due to the elastic force resulting from the compression determined by the insertion force F and the second sealing tooth 302 advances along the transverse direction T inserting into the coupling cavity 351. The second sealing tooth 302 abuts the walls of the second coupling cavity 240 along the longitudinal direction L in both sliding directions V1, V2 inhibiting the sliding of the connection element 3 during the movement of the slat 2. The method for connecting the slat 2 to the movement mechanism 14 comprises a step of disassembling the connection element 3. The disassembly of the connection element 3 occurs along the longitudinal direction L. The first and second upper flaps 34, 35 retract along the transverse direction T due to the extraction force E. The first and second sealing teeth 301, 302 retract along the transverse direction T, in response to the retraction of the first and second upper flaps 34, 35. The leaf spring 350 deforms (i.e., bends by rotating about the direction N due to the insertion force F) along the transverse direction T, in response to the retraction of the first and second sealing teeth 301, 302. The first and second sealing teeth 301, 302 retract by inserting into the housing cavity 351. The connection element 3 may be extracted by sliding along the sliding direction V1 in the longitudinal groove SL or by lifting it along the normal direction N.

[0227] In an embodiment, the method of coupling a coupling assembly 5 to a slat 2 comprises a step of providing a connection element 3, comprising one or more of the features described above.

[0228] In an embodiment, the method of coupling the coupling assembly 5 to the slat 2 comprises a step of providing a locking element 4, comprising one or more of the features described above.

[0229] In an embodiment, the method of coupling the coupling assembly 5 to the slat 2 comprises a step of contacting the locking element 4 with a chamfer 315 of the coupling plate 30. The contact occurs between a protrusion SP of the locking element 4 and an inclined wall 315' of the chamfer 315.

[0230] In an embodiment, the method of coupling the coupling assembly 5 to the slat 2 comprises a step of sliding the locking element 4 on the chamfer 315 along the longitudinal direction L. The protrusion SP of the locking element 4 slides along the inclined wall 315' of the chamfer 315.

[0231] In an embodiment, the method of coupling the coupling assembly 5 to the slat 2 comprises a step of deforming the locking element 4. A tab 44 of the locking element 4 elastically deforms along the normal direction N. The elastic deformation occurs along the normal direction N. The elastic deformation is induced by the sliding of the protrusion SP on the inclined wall 315' of the chamfer 315.

[0232] In an embodiment, the method of coupling the coupling assembly 5 to the slat 2 comprises a step of inserting the locking element 4 onto the coupling plate 30. The locking element 4 is arranged in a coupled position with respect to the coupling plate 30.

Claims

1. A slat assembly (1) for a sunshade, comprising: - a slat (2), elongated along a longitudinal direction (L) between a first and a second end (20A, 20B) and including: an outer surface (201); an inner surface (202), opposite the outer surface (201); a first projection (21), rising from the inner surface (202) along a normal direction (N), perpendicular to the longitudinal direction (L); a second projection (22), rising from the inner surface (202) along the normal direction (N) and spaced apart from the first projection along a transverse direction (T), perpendicular to the longitudinal direction (L) and the normal direction (N), wherein the space between the first and second projections (21, 22) defines a longitudinal groove (SL); - a connection element (3), including a coupling plate (30) configured to insert into the longitudinal groove (SL), and a connection arm (31) configured to connect to a movement mechanism (14) of the sunshade (10), wherein the coupling plate (30) comprises a contact surface (310) facing the inner surface (202) of the slat (2), a first lateral surface (311) in contact with the first projection (21), a second lateral surface (312) in contact with the second projection (22), characterized in that the coupling plate (30) comprises a first sealing tooth (301) arranged at the first lateral surface (311) and protruding in transverse direction (T) to interfere with the first projection (21), and a second sealing tooth (302) arranged at the second lateral surface (312) and protruding in transverse direction (T) to interfere with the second projection (22).

2. A slat assembly (1) according to claim 1, wherein each of said first and second sealing teeth (301, 302) has a respective thickness (S1, S2), wherein the thickness of each of said first and second sealing teeth (301, 302) is variable along the transverse direction (T).

3. A slat assembly (1) according to claim 2, wherein the thickness (S1, S2) of each of said first and second sealing teeth (301, 302) decreases along the transverse direction (T) in a direction exiting the respective first or second lateral wall (311, 312) of the coupling plate (30).

4. A slat assembly (1) according to any one of the preceding claims, wherein each of said first and second sealing teeth (301, 302) has a respective height (H1, H2), wherein the height of the tooth is variable along the normal direction (N).

5. A slat assembly (1) according to claim 4, wherein the height (H1, H2) of said first and second sealing teeth (301, 302) decreases along the normal direction (N) in a direction exiting the inner surface (202) of the slat (2).

6. A slat assembly (1) according to any one of the preceding claims, wherein the hardness of the first and second sealing teeth (301, 302) is greater than or equal to the hardness of the material with which the first and second projections (21, 22) are made.

7. A slat assembly (1) according to any one of the preceding claims, wherein each of said first and second projections (21, 22) comprises a respective first and second notches (210, 220), wherein the first notch (210) defines a first and second longitudinal shoulder surfaces (211, 212), configured to abut the first sealing tooth (301) along the longitudinal direction (L) in both sliding directions (V1, V2), and wherein the second notch (220) defines a third and fourth longitudinal shoulder surfaces (221, 222), configured to abut the second sealing tooth (302) along the longitudinal direction (L) in both sliding directions (V1, V2), wherein the first and second notches (210, 220) are spaced apart from the first longitudinal end (20A) of slat (2) by a first and second connection distances (DC1, DC2), respectively, comprised between 1 mm and 10 cm.

8. A slat assembly (1) according to any one of the preceding claims, comprising a locking element (4), comprising a first coupling end (41) and a second coupling end (42), spaced apart from each other along the transverse direction (T) and each configured to couple with the first or second projection (21, 22), wherein the locking element (4) is arranged, along the normal direction (N), above the connection element (3), to avoid a removal of the connection element (3) from the longitudinal groove (SL).

9. A slat assembly (1) according to any one of the preceding claims, wherein each of said first and second projections (21, 22) comprises a respective first or second coupling cavity (230, 240), passing through the first or second projection (21, 22) or blind and extending along the transverse direction (T), wherein the first projection (21) is configured to elastically move back along the transverse direction (T) in response to an insertion force (F) applied by the first sealing tooth (301) so as to allow an insertion of the first sealing tooth (301) into the first coupling cavity (230), wherein the second projection (22) is configured to elastically move back along the transverse direction (T) in response to the insertion force (F) applied by the second sealing tooth (302), so as to allow an insertion of the second sealing tooth (302) into the second coupling cavity (240).

10. A slat assembly (1) according to any one of the preceding claims, comprising an additional connection element, for defining a first connection element defined by the connection element (3A) and a second connection element (3B) defined by the additional connection element, and wherein the first connection element (3A) is connected to the slat (2) at the first end (20A) thereof in longitudinal direction (L) and wherein the second connection element (3B) is connected to the slat (2) at the second end (20B) thereof in longitudinal direction (L).

11. A slat assembly (1) according to any one of the preceding claims, wherein the coupling plate (30) comprises a rear surface (320), opposite the contact surface (310), a connection surface (313), perpendicular to the contact surface (310) and at which the connection arm (31) is connected, and a lead-in surface (314), opposite the connection surface (313), wherein the connection element (3) comprises a chamfer (315) inclined with respect to the normal direction (N) and to the longitudinal direction (L), for joining the rear surface (320) with the lead-in surface (314).

12. A sunshade (10) comprising: - a plurality of slat assemblies (11), each made according to any one of the preceding claims and comprising a plurality of slats (12) configured to be moved along an adjustment direction (R); and a plurality of connection elements (13), each configured to connect a respective slat of said plurality of slats (12) to the movement mechanism (12); - a movement mechanism (14), configured to transmit a movement along the adjustment direction (R) to the plurality of slats (12); - an actuator (15), associated with the movement mechanism (12) to move it; wherein the adjustment direction (R) is perpendicular both to the longitudinal direction (L) and to the transverse direction (T), respectively.

13. A method for connecting a slat (2) to a movement mechanism (14), comprising the following steps: - step of preparing a connection element (3), including a coupling plate (30), configured to insert into the longitudinal groove (SL), and a connection arm (31), configured to connect to a movement mechanism (14) of the sunshade (10), - step of providing the slat (2), elongated along a longitudinal direction (L) between a first and a second end (20A, 20B), and including: an outer surface (201); an inner surface (202), opposite the outer surface (201); a first projection (21), rising from the inner surface (202) along a normal direction (N), perpendicular to the longitudinal direction (L); a second projection (22), rising from the inner surface (202) along the normal direction (N) and spaced apart from the first projection along a transverse direction (T), perpendicular to the longitudinal direction (L) and the normal direction (N), - step of coupling the connection arm (31) to the movement mechanism (14), - step of inserting the coupling plate (30) into the longitudinal groove (SL), - step of contacting the first sealing tooth (301) and the first projection (21), to define a coupling between the coupling plate (30) and the first projection (21), - step of contacting the second sealing tooth (302) and the second projection (22), to define a coupling between the coupling plate (30) and the second projection (22).

14. A method according to claim 13, wherein the connection element (3) is locked in the longitudinal groove (SL) by means of a locking element (4) arranged along the normal direction (N), above the connection element (3), the first and second projections (21, 22) comprising a first and second notches (210, 220), respectively, wherein the first notch (210) defines a first and second longitudinal shoulder surfaces (211, 212) and wherein the second notch (220) defines a third and fourth longitudinal shoulder surfaces (221, 222), in the insertion step of the coupling plate (30) into the longitudinal groove (SL), the first sealing tooth (301) and the second sealing tooth (302) abut the shoulder surfaces of the respective first and second notches (211, 212, 221, 222), respectively, along a longitudinal direction (L) in both sliding directions (V1, V2).

15. A method according to claim 13, the first and second projections (21, 22) comprising a respective first or second coupling cavity (230, 240), passing through the respective first or second projection (21, 22) or blind and extending along the transverse direction (T), in the step of inserting the coupling plate (30) into the longitudinal groove (SL),wherein the first and second projections (21, 22) elastically move back along the transverse direction (T) in response to an insertion force (F) applied by the first and second sealing teeth (301, 302), respectively, so as to allow an insertion of the first and second sealing teeth (301, 302) into the respective first and second coupling cavities (230, 240).

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