ES2726726T3 - Roller shutter with rotating slats and related motion system - Google Patents

Abstract

Roller shutter to protect against the solar radiation that enters through the frames of the buildings, comprising: lateral guides (6) installed integrally on the sides of the frame to be protected; a plurality of slats (1), being at least one of said swivel type slats, said slats (1) being restricted to the respective non-rotating end elements (2) that slide inside said lateral guides (6), and being wound around a shaft (11) disposed within a box arranged in the frame, at least one frame (5) installed within at least one of said lateral guides (6), said at least one rotating blade (1) being restricted at least one pinion (4) installed so that it meshes with said frame and causes said at least one blade (1) to rotate after a vertical movement of said frame, characterized in that said at least one pinion (4) is restricted to said blade (1) by means of a key shaped (3), said key being installed integrally to said blade (1) and being provided with a shaped end (32) on the side opposite the end directed towards the slat (1), said end being shaped (31) configured for ra slidably engaging in a restraint means with respective shape (41) disposed on said at least one pinion (4) so that once said key (3) is applied to the pinion (4), it rotates integrally and in such a way that the restriction between it can be slidably removed by means of the vertical movement of said key (3).

Description

DESCRIPTION

Roller shutter with rotating slats and related motion system

The present invention relates to a blind with rotating louvers and their respective system for moving the louvers.

In particular, the invention allows to increase the maximum angle of rotation of the louvers of the blinds, to install blinds with rotating louvers in case of remodeling also in place of the existing traditional blinds, and possibly to realize blinds in which only a part of the lamas

Technical field

Roller blinds are commonly installed outside the frames to protect against solar radiation. In general, they are blinds formed by a plurality of restricted slats so that they can be wound around a roller, possibly a motorized roller. The slats are also known as lamellae, which are intended to be equivalent to the slats of the present document. In the upper portion of the frame there is a box that allows the blind to be accommodated when it is wrapped around the roller.

Traditional blinds do not have rotating louvers, so they do not allow you to change the extent of the sun protection or modify the orientation of the openings to protect against the direct solar radiation that enters even if natural ambient lighting is allowed.

In the prior art, blinds with rotating louvers are also known, such as that described in Italian patent application BA2013A000082, in which a blind with rotating louvers that can be packaged as an "accordion" is described when it is closed in the box, instead of being wrapped around a roller. Other embodiments are known in the current state of the art, such as those described in applications VR2009A000006, VR2011A000078, MI2012A000528, PD2009A000017, BA2013A000061. Other examples are described in European patent EP1056921 and in German patent DE3511246. According to the present knowledge of the inventors, there are no known roller blinds with rotating louvers that can be automated, and thus configured to automatically return the louvers of the blind to the vertical position before the blind is raised, and in In particular, the use of a rack and pinion system to move the lamellae is not known.

Object of the invention

Therefore, the objective of the present invention is to provide a roller blind with rotating louvers.

According to another objective, the present invention provides a roller blind with rotating louvers, configured so that the louvers are automatically returned to an upright position before the blind is raised. According to another objective, the present invention provides a system for moving the louvers of a blind, which allows to change the orientation angle of at least a part of said louvers, which allows rolling shutters in which not all louvers can rotate. .

The invention achieves the predetermined objectives, since it is a roller shutter to protect against the solar radiation that enters through the frames of the buildings, comprising: lateral guides installed integrally on the sides of the frame to be protected; a plurality of slats, of which at least one of said slats is of the rotating type, said slats are restricted by the respective end elements that do not move and by elements that slide inside said lateral guides, and are wound around a axis located within a box arranged in the frame, characterized in that said blind further comprises at least one frame installed within at least one of said lateral guides and that said at least one rotating blade is restricted to at least one installed pinion of such that it meshes with said frame and so that said at least one blade rotates after a vertical movement of said frame.

Figures

An overall view of an embodiment of the system for moving the slats according to the invention is shown in Figure 1, which is shown in an exploded view of Figure 2. In Figure 3, the system is shown with slats inclined with respect to the vertical position Figure 4 shows a view of the system with the sliding side guide shown (in broken lines). Figure 5 (a, b, c) shows a front, side and sectional view of the blind and its respective movement system, respectively. Figure 6 shows a detail, in an exploded view, of the slat restriction system; A preferred embodiment of the slat angle control system is shown in Fig. 7, the operation of which is described in Figures 9 to 13.

It should be taken into account that, only for graphic clarity, only some slats are shown in the Figures, and the movement system is shown with reference to only one side of the blind. It will be clear that the blind according to the invention comprises a plurality of slats sufficient to cover the entire opening of the frame and that, depending on the width of the frame to be covered, the blind can be made with the movement system installed in only one or in both sides.

Detailed description

Referring to Figure 1, the blind according to the present invention comprises a plurality of rotating slats (1), each restricted at both ends by a non-rotating end element (2) that slides into a suitable lateral guide ( 6). The restriction of the blade (1) to the end element (2) is evident in Figure 6. A key (3) passes through a gap (21) inside the end element (2), and is applied with its own shaped end (31) to a respective shaped hole (101) disposed in the closure plug (10) of the blade (1). It should be understood that the one shown in the Figure is a preferred embodiment of the restriction between the end element and the slat, however, other embodiments are used provided that the restriction made is such that it allows only the relative rotation between the element of end (2) and the plank (1) about an axis parallel to the profile of the plank. Referring to Figure 6, it is further noted that the end element (2) is provided with restriction means (22, 23) at the upper and lower ends.

In the embodiment shown, the restriction means are a pin (22) and a respective hole (23), which allow a plurality of end elements (2) to restrict each other so that only relative rotation is allowed between them. around the pin axis (22).

In this case it is also possible to use a different restriction mode provided that the restriction between the end elements is such that they can slide inside the lateral guide (6) and be wound together with the slats (1) around the axis (11), as also happens in traditional blinds. As can be seen in Figure 6, the key (3) has a shaped end (32) also on the side opposite to the one directed towards the blade (1). This shaped end (31) is configured to be slidably coupled to respective shaped restriction means (41) arranged in the pinion (4). The pinion or cogwheel (4), which can be seen well in Figure 2, is in fact realized in such a way that it has a serrated end and the other with a cylindrical outer surface, with a recess (41) configured to be applied. slidably to the shaped end (32) of the key (3). Once the key has been applied to the pinion (4), it turns fully, and the restriction between them can be removed only when the restriction means are in an upright position and the key, dragged by the respective end element ( 2), it is raised.

As is evident in Figure 4, each pinion is applied to the frame (5) that slides vertically inside the lateral guide (6). The restriction of the frame (5) and the pinions (4) related to each blade (1) is such that, when the frame is moved up or down, the pinions (4) rotate an angle imposed by the extension of the vertical movement of the frame. In its own turn, each pinion (4) also imposes the turn on the respective blade (1) by means of the key (3). On the contrary, the end element (2) does not rotate. It should be noted that the end element (2) has a width such that it extends with respect to the lateral guide (6). In this way, the slats (1) can rotate without interfering with the guide (6).

Therefore, as can be seen in comparison with Figures 3 and 4, the slats (1) can acquire a plurality of angular positions, thus achieving the objective of providing a blind with rotating louvers.

To wind the blind it is clearly necessary that the pinions (4) and the respective keys (3) have respective restriction means (41, 32) oriented in a vertical direction, and that the slats (1) are in the closed position shown in Figure 4. The following describes the way in which this occurs automatically. Once the slats are in the position of Figure 4, the blind can be wrapped around the roller (11), as with traditional blinds. When the roller (11) (which can be of the motorized or manual control type) rolls up the blind, the key (3) relative to each blade (1) slides with respect to its own pinion (4) and moves up, in full with the blind. As all the pinions (4) are oriented in the same way, each key (3) in its upward movement can easily pass to the following pinions without encountering interference. Without departing from the objectives of the present invention, it is possible to use all the measures known in the current state of the art regarding work tolerances, the clearance of the couplings and the geometric couplings to be performed on the key (3) the pinion (4) so that the system in operation is not subject to jams.

It should also be noted that it is possible to vary the number and position of the rotating slats, without departing from the objectives of the present invention. Each blade (1) can in fact be made in a fixed (non-rotating) manner simply by not installing in it the key (3) and the pinion (4) and restricting it integrally to the respective end element (2). Therefore, blinds can be made in which all the slats (1) have the described movement mechanism arranged, or only a portion, without any limit on the number and position of the rotating slats.

Before describing an embodiment of the system of automatic arrangement of the slats, it should be taken into account that, once each key (3) is applied to the respective pinion (4), there is a direct correspondence between the vertical position of the frame (5) and the angular position of the slats (1).

In other words, the vertical position of the frame can range between two limiting positions, corresponding to the closed position of the slats and the maximum angular opening of them.

Preferably, the blind according to the present invention further comprises an automatic system for positioning the slats (1) in a closed position before raising the same blind.

According to a first embodiment, not shown in the Figures, the vertical position of the frame can be controlled by an electric motor arranged inside the box and provided with a suitable pinion which is applied to the frame. Said electric motor can be configured to be controlled by means of the same control, typically a button, which activates the electric motor that controls the shaft (11) on which the blind is wound. Conveniently, a limit stop contact can be installed in the frame (5), configured to allow the electric motor that controls the shaft (11) to start winding the blind only when the frame (5) is in the correct position that allows the rolled up Similarly, the frame control motor can be driven, which, on the other hand, is excluded from operation when the frame is in the correct position to allow the climb. In this way, using only one control and with a single action by the user, also using commercially available components, it is possible to return the slats to the correct position and then to raise the blind. A second limiting contact can be installed to allow the operation of the control motor to orient the slats in the opening direction only when the blind is completely lowered.

It will be clear that this embodiment is easily achievable with blinds for which motorized control is still provided.

Another embodiment of the automatic louver arrangement system (1) is shown in the attached Figures 7 to 13. It is an embodiment that can be used both with blinds having an electrical control and with blinds having a manual control arranged. Referring to Figure 7, inside the case (12) of the frame there is arranged a transmission case (8) having a pulley (9) arranged. A belt (not shown in the Figure) connects the pulley (9) of the transmission case (8) to the transmission pulley (11) that forms an integral part of the winding shaft (11) of the blind. Since the movement reaches the transmission case directly from the shaft (11), what is described below can be used with both electrically controlled blinds and manually controlled blinds.

In Figure 8, the inner components of the transmission case (8) are shown, which are illustrated in the exploded view of Figure 9. For greater graphic clarity, the case is not drawn in this and other Figures.

The pulley (9) cascades the sprocket (81) and the gearwheel (82). Therefore, these two elements always rotate when the shaft (11) rotates.

As can be seen in Figure 10, the toothed wheel (82) has a pin (821) arranged eccentrically in relation to the axis of rotation of the wheel (82). A crazy wheel (83) is configured to rotate, controlled by the gearwheel (82), only when said pin (821) is applied to one of the grooves (831) arranged in the crazy wheel (83).

In fact, the idler wheel (83) has grooves (831), open at the ends, and is positioned so that, during its rotation, the pin (821) can be applied to one of said grooves, causing the wheel crazy rotate an angle equal to the angle between two following slots (831). Preferably, as shown in the Figures, the slots are 5 in number and the angle between the two following slots is 72 °.

The idler wheel (83) is always motionless, unless the pin (821) is applied to one of the grooves (831). In this case, it rotates integrally with the gearwheel (82), but only until the pin (821), continuing with its turn, leaves the groove. Therefore, a mechanism is performed in which an intermittent rotation of the idler wheel (83) corresponds to a continuous rotation of the axis of the blind.

As described in the Figure, the idler wheel (83) remains motionless for four fifths of a revolution of the gearwheel (82), and then moves during the remaining portion of the revolution.

The idler wheel (83) is in turn provided with an eccentric pin (832), configured to be applied to a groove (841) arranged in the partial gearwheel (84). With a mechanism similar to that just described for the idler wheel (83), the partial wheel (84) rotates only when the pin (832) is applied to the groove (841). At all other times and in all other positions of the idler wheel (83), the partial gearwheel (84) does not move. It should be noted that in the present context for the partial gearwheel (84) it is intended that a wheel be provided with teeth only in a circular sector and not in the entire circumference. According to what is shown in the Figures, the partial wheel (84) moves 90 ° at each complete revolution of the idler wheel (83) and, therefore, at every 5 revolutions of the cogwheel (82). Obviously, said values may vary, without departing from the objectives of the invention, depending on the sizing of the system.

When moving, turning around its own axis (842), the partial wheel (84) is applied to a pinion (85) which, by means of a cam (851), raises or lowers the terminal (86), integral with the frame (5).

Therefore, the frame (5) moves controlled by the movement of the axis (11) of the blind, but can only move when the idler wheel (83) transmits the movement to the frame.

It should be borne in mind that what is shown is only one embodiment of the mechanism, and that other embodiments can be used as long as it is a mechanism configured to transform a continuous rotating movement (the one provided by the blind axis) into a frame movement alternating the state of rest and movement alternatively, the resting state of the frame corresponding to the turns of the axis necessary to unwind (or wind up) the blind, and the alternative movement of the frame can only be performed when the blind is in its fully lowered position.

Once installed, the operation of the system is as follows:

It must be taken into account that the blind is completely lowered and that the slats are open so that the light is filtered. Therefore, the frame (5) is in its lowest position. The configuration of the gears just described within the transmission case is such that, in this position, the pin (832) of the idler wheel (83) is applied to the corresponding slot (841) in the partial wheel ( 84).

When the axis (11) begins to rotate, the blind is not raised in the first place, since it is restricted to the axis with springs or flexible belts, according to what also commonly occurs in the current state of the art.

While the flexible belts are not completely wound on the shaft (11), the blind is not raised.

On the other hand, the driven pulley (9) spins immediately in full with the axle (11) and, by the mechanism just described, the idler wheel (83) spins the partial wheel (84), which in turn raise the frame (5). The sizing of the system is such that when the sprocket has turned, the louvers of the blind are in their closed position.

Even if the axle (11) continues to rotate, according to what has just been described, the partial wheel (84) remains motionless and, therefore, the blind can begin to be raised and rolled around the roller without the frame (5) change position, and thus, without the pinions (4) acting as interference for the keys (3). On the contrary, when the blind is lowered, the partial sprocket (84) does not move until the pin (832) of the idler wheel (83) is again applied to it. It will be evident, before this occurs, that the system has to perform, in the opposite direction, the same number of turns made in the ascent step and, therefore, the slats (1) of the blind can rotate, controlled by the frame (5), only when the blind is completely lowered and the keys (3) are in the respective pinions (4). Also, the opening of the slats occurs easily by turning the shaft (11) and without the need for other control by the user.

Therefore, a transmission case (8) has been described, configured so that a continuous turning movement is accepted at the inlet - provided by the pulley (9) - and a discontinuous vertical movement is produced to control the frame (5). ), such vertical movement can occur only when the blind is completely lowered.

Claims (7)

1. Roller shutter to protect against solar radiation entering the building frames, comprising: lateral guides (6) installed integrally on the sides of the frame to be protected; a plurality of slats (1), being at least one of said swivel type slats, said slats (1) being restricted to the respective non-rotating end elements (2) that slide inside said lateral guides (6), and being wrapped around an axis (11) arranged inside a box arranged in the frame, at least one frame (5) installed within at least one of said lateral guides (6), said at least one rotating blade (1) being restricted to at least one pinion (4) installed so that it engages with said frame and causes said at least one blade (1) to rotate after a vertical movement of said frame, characterized by said at least one pinion (4) is restricted to said blade (1) by means of a shaped key (3), said key being installed integrally to said blade (1) and being provided with a shaped end (32 ) on the side opposite the end directed towards the slat (1), said shaped end (31) being configured to slidably engage in a restraining means with respective shape (41) disposed on said at least one pinion (4) so that once said key (3) is applied to the pinion (4), it turns fully and in such a way that the restriction between it can be slidably removed by means of the vertical movement of said key (3). 2. Roller shutter for protection against solar radiation entering the building frames according to claim 1, comprising a pair of frames (5), each installed in one of said lateral guides (6). 3. Roller shutter to protect against solar radiation entering the building frames according to any one of the preceding claims, characterized in that all the slats are of the rotating type. 4. Roller shutter to protect against solar radiation entering through the building frames according to any one of the preceding claims, further comprising an automatic arrangement of said rotating slats (1) in a closed position before it is raised blind. 5. Roller shutter to protect against solar radiation entering through the building frames according to claim 4, characterized in that said axis is of the motorized type and comprises at least one electric motor disposed within the frame box and has a suitable pinion applicable to said at least one frame. 6. Roller shutter to protect against solar radiation entering through the building frames according to claim 5, characterized in that said electric motor is configured to be controlled by means of the same control that drives the electric motor that controls said axis (11 ), and further comprising a limit stop contact installed in said frame (5), configured to allow the electric motor controlling the shaft (11) to start winding the blind only when the frame (5) is in the correct position for allow curl. 7. Roller shutter to protect against solar radiation entering the building frames according to any one of claims 4 to 6, characterized in that said automatic louver arrangement system comprises a transmission box (8) configured so that a continuous rotary movement is accepted at the entrance, provided by the movement of said axis (11), and a discontinuous vertical movement is produced to control said frame (5), said discontinuous vertical movement being able to occur only when the blind is completely lowered.