ITVR20000087A1 - MOTORIZED DEVICE FOR OPENING / CLOSING A WINDOW DOOR, PARTICULARLY SUITABLE FOR DOORS OR GATES. - Google Patents

Abstract

A motorized device (1) for opening/closing a door or window (2), the door or window (2) comprising: a supporting frame formed by at least two lateral posts (4,5) and by an upper lintel; at least one leaf (7) mounted rotatably on the supporting frame; and a pivot or hinge (8) for each leaf (7), which is suitable to rotatably support the respective leaf (7) on the supporting frame and to rotate, during use, rigidly therewith; the device (1) further comprising articulated transmission means, which rotates rigidly with the pivot or hinge (8) and is suitable to transmit to the leaf (7) a rotary motion about the respective pivot or hinge (8), and actuation means (9) that is kinematically connected to the articulated transmission means and is suitable to impart thereto a preset angular stroke about the pivot or hinge (8), so as to move the respective leaf (7) between a closure position and at least one open position. <IMAGE>

Description

MOTORIZED DEVICE FOR OPENING / CLOSING A WINDOW, PARTICULARLY SUITABLE FOR DOORS OR GATES

DESCRIPTION

The present invention refers to a motorized device for opening / closing a window or door, particularly suitable for doors or gates.

As is known, devices are already available on the market which are able to carry out, on command, the automatic opening and / or closing of doors or gates.

The devices currently installed generally consist of an electromechanically or hydraulically operated cylinder-piston unit provided on each leaf of the window to be automated. Each cylinder-piston assembly has the cylinder hinged to the respective upright of the window frame and the piston intended on one side to slide telescopically within the respective cylinder and on the other to rotatably engage the respective sash by means of a pin projecting from the latter.

In a device such as the one described above, the controlled advancement or retraction movement of each piston with respect to its own cylinder in fact imposes a predefined angular excursion on the respective sash in a corresponding direction of rotation around its hinge so as to achieve the opening or the closing of the window frame.

The aforementioned devices, despite being widely used today especially for the movement of doors or gates, have the characteristic of not being easily maneuverable manually, for example in the event of a power failure, as they require a specific intervention aimed at unlocking drive mechanisms, intervention which almost always requires the use of a key or the actuation of a release lever.

A further drawback of the existing motorizations consists in the fact that they are normally hinged to the door leaf in a bulky and aesthetically unsatisfactory way or are housed in a special compartment (well) obtained under the floor with difficulty and high execution costs.

Furthermore, the motorized devices used today for the movement of doors or gates can sometimes constitute an element of risk for accidents, as a person who is nearby can involuntarily injure his hands, especially if mounted at a height from land such as to be within reach of children.

The main object of the present invention is to provide a motorized device for opening and / or closing a window or door without the drawbacks mentioned above relating to the devices currently in use.

Another object of the present invention is that the aforementioned device must be installed close to the fixed upper part of the window frame (frame crosspiece) normally not reachable by "people and, moreover, easily concealed from view, thus guaranteeing maximum safety during its operation with considerable advantages also from an aesthetic point of view.

These and other purposes, which will become clearer later, are achieved by a motorized device for opening / closing a window or door, said window frame comprising a support frame formed by at least one pair of lateral uprights and by an upper crosspiece, at least one mounted sash pivotable on said support frame and a pin or hinge for each leaf suitable to rotatably support the respective leaf on said support frame and to rotate, in use, integral with it, said device being characterized in that it comprises articulated transmission means constrained in rotation with said pin or hinge and able to transmit to said leaf a rotation motion around the respective pin or hinge and actuation means kinematically connected to said articulated transmission means and able to impart to them a predefined angular excursion around said pin or hinge so as to move the respective batten between a closed position and at least one open position.

Advantageously, said actuation means comprise at least one reversible motor mounted on said support frame free to perform angular excursions around an articulation axis substantially parallel to said pin or hinge.

Conveniently, said articulated transmission means comprise a drive shaft driven by said reversible motor so as to receive a rotary motion for a predefined number of revolutions both in one direction of rotation and in the other, at least one scroll element mounted sliding along said shaft control unit and at least one lever having one end integral in rotation with said pin or hinge and the other end articulated with said scroll element so as to transform the rotation motion in one direction or in the opposite direction of said drive shaft into a corresponding angular excursion of the respective sash around its pin or hinge.

Further aspects and advantages of the present invention will become clearer from the following detailed description of some of its currently preferred embodiment examples, given purely for illustrative and non-limiting purposes, with reference to the accompanying drawings, in which:

Figure 1 shows a front elevation view of a door operated by a device according to the invention;

Figure 2 shows a plan view of the door of Figure 1; Figure 3 is a sectional view on an enlarged scale of the door of Figure 1, taken along the line III-III of Figure 1;

Figure 4 illustrates a sectional view on an enlarged scale of the device mounted on the door of Figure 1;

Figure 5 shows a plan view on an enlarged scale of a detail of the device of Figure 4;

Figure 6 is a side elevation view on a reduced scale of a first variant of the device of Figure 4;

Figure 7 is a plan view of a second variant of the device of Figure 4;

Figure 8 illustrates a plan view of a third variant of the device of Figure 4;

Figure 9 shows a front elevation view of the device shown in Figure 8;

Figure 10 illustrates a front elevation view of a fourth variant of the device of Figure 4; And

Figure 11 shows a plan view and partially in section of the fourth variant of the device of Figure 4.

In the accompanying drawings identical or similar parts or components have been marked with the same reference numerals.

Referring first to Figures 1 to 5, a motorized opening / closing device according to the invention, indicated with the reference number 1, can be installed in correspondence with a window frame 2, such as, for example, a door or a door, generally composed of a support frame 3 comprising a pair of uprights 4 and 5 and an upper crosspiece 6 and a sash 7 rotatably mounted on the support frame 3 by means of a pin or hinge 8.

Advantageously, the hinge 8, which can extend along the vertical or along the horizontal according to the opening / closing system to be adopted for the door leaf 7, is intended to support the latter integral in rotation with it in such a way that its angular excursion around its main axis x-x corresponds to an angular excursion of equal amplitude of the respective sash 7.

In particular, in the Figures listed above a window frame 2 is taken into consideration having the structure of a door with a leaf 7 articulated to the support frame 3 by means of a vertical hinge 8.

As can be seen better in Figure 2, the motorized device 1 first of all comprises actuation means, which may consist of a reversible motor 9 mounted on the leaf 7 free to perform angular excursions with respect to a substantially vertical y-y axis (see Figure 1 and the letter A of Figure 2) and able to generate a rotational motion around a substantially horizontal axis z-z (indicated with the letter B in Figure 1).

The device 1 further comprises transmission means 10 intended to transform the rotational motion B generated by the reversible motor 9 into a corresponding angular excursion of the respective sash 7 around its hinge 8 (indicated with the letter C in Figure 2).

The transmission means 10 preferably comprise a drive shaft 12 driven by the reversible motor 9 so as to receive a rotary motion B for a predefined number of revolutions both in one direction of rotation and in the other, a scroll element 13 mounted sliding along the drive shaft 12 and at least one lever 14 having one end 15 integral in rotation with the hinge 8 of the respective leaf 7 and the other end 16 articulated to the scroll element 13.

Advantageously, the drive shaft 12 is affected by a helical thread 17 (see Figures 3 and 4), at least for a portion corresponding to the stroke of the scroll element 13, which is in turn equipped with nut screw means 18 intended for to engage, in use, the helical thread 17 of the control shaft 12 to transform the rotational motion B in one direction or the other of the control shaft 12 into a corresponding linear excursion respectively forward or return (indicated in Figure 2 with D 'and with D ") of the respective scroll element 13 along the same drive shaft 12.

In fact, from Figures 3 and 4 it can be seen how a scroll element 13 is preferably composed of a hollow element 19 internally delimiting a hollow portion 20 acting as a sliding seat for the drive shaft 12 and as a housing seat for the nut screw means 18. Advantageously, the nut screw means 18 are configured so as to engage only an angular portion of the drive shaft 12 and can be moved, on command, within the respective hollow portion 20 between a working position, in which they engage the control shaft 12 and a rest position, in which they are retracted and disengaged with respect to the same control shaft 12.

As can be seen in particular in Figure 4, the coupling of the nut screw means 18 with the helical thread 17 of the drive shaft 12 can be achieved by means of an actuation device 21, for example of the electromagnetic type, carried by the scroll element 13 and powered by an external electric power source (not shown in the Figures).

The actuation device 21 preferably comprises a support casing 23 suitably fixed to the hollow element 19 making up the scroll element 13, a solenoid 24 housed within the support casing 23 "with longitudinal axis j-j transverse with respect to the drive shaft 12 and an anchor element 25 arranged inside the respective solenoid 24 and having an end mechanically connected to the nut screw means 18.

Advantageously, return means 26 are provided between the anchor element 25 and the nut screw means 18, comprising, for example, a spring able to exert a constant force to move the nut screw means 18 away from the respective drive shaft 12 so as to ensure that , when the solenoid 24 is unloaded, the nut screw means 18 are in a disengaged condition with respect to the drive shaft. 12.

With the actuation device 21 it is therefore possible to command the nut screw means 18 to move towards the control shaft 12, feeding the solenoid 24 with a current of predefined direction and intensity. In fact, the current flowing through the solenoid 24 induces a magnetic field inside it capable of acting on the anchor element 25 with a force having a direction coinciding with the j-j axis of the solenoid 24 and opposite to that of the elastic force exerted by the spring 26 .

When a user commands the device 1, for example, to open the leaf 7, a control unit (not shown in the Figures) commands the electric current source to power the solenoid 24 according to a predetermined direction of travel of its coils 22 such as to internally induce to it a magnetic field directed towards the drive shaft 12. On the anchor element 25 hit by the aforementioned induced magnetic field, a force opposite and greater than the return force of the spring 26 is therefore exerted so as to bring it closer to the axis z-z until until the nut screw means 18 engage with the helical thread 17 of the drive shaft 12.

Once the coupling between the nut screw means 18 and the drive shaft 12 has occurred, the control unit activates the motor 9 so as to rotate the drive shaft 12 around its axis z-z so as to impose a stroke on the scroll element 13 D 'along the z-z axis whose length depends on the number of revolutions performed by the drive shaft 12, which number of revolutions is in turn controlled, for example, by an encoder (not shown in the Figure) coupled to the motor 9.

The displacement D 'of the scroll element 13 along the drive shaft 12 forces the lever 14, pivoted to it, to perform a predetermined forward angular excursion around the x-x axis (indicated in Figure 2 with the letter E') , which corresponds to an identical angular excursion C of the respective hinge 8 and therefore of the leaf 7, which moves into the desired opening position. At this point the control unit interrupts the power supply to the solenoid 24 and then cancels. the force of electromagnetic origin which guarantees, in use, the engagement between the nut screw means 18 and the drive shaft 12. In fact, in the absence of a magnetic field, the return spring 26 forces the nut screw means 18 to move away from the axis z-z and to disengage from the drive shaft 12.

After a predetermined time interval, the control unit starts the closing phase C "of the sash 7, supplying the solenoid 24 so as to return the nut screw means 18 to the working position, ie in a condition of engagement with the helical thread 17 of the shaft control 12, and by activating the motor 9 so as to rotate the control shaft 12 in the direction opposite to that of the opening phase. A movement of approach D "to the motor 9 is therefore imposed on the scroll element 13, to which displacement corresponds an angular return excursion E "of the lever 14 having an amplitude equal to that of the outward movement E 'in order to bring the respective leaf 7 back to the closed position.

With such an actuation device 21 it is also possible to automatically disengage the opening / closing device 1 from the respective leaf 7 whenever there is a power cut or any other fault in the power supply system so as to allow the user to perform manually the opening and / or closing operations of the leaf 7 with extreme simplicity and without the risk of damaging the device 1.

According to an alternative configuration, the actuation device 21 can be devoid of the return spring 26, providing in this case a rigid and direct connection between the solenoid 24 and the nut screw means 18. The solenoid 24, depending on the direction of travel of the long current its coils 22, is intended to generate inside it a magnetic field capable of exerting on the respective anchor element 25 a force aimed at bringing the anchor element 25 closer or further away respectively towards or from the drive shaft 12 in order to to respectively effect the engagement or disengagement of the nut screw means 18 with the drive shaft 12.

If the power supply to the solenoid 24 is interrupted and the nut screw means 18 are in the working position, i.e. in a condition of engagement with the drive shaft 12, the actuation device 21 requires a source of auxiliary power (not shown in the Figures) capable of supplying at least the current necessary to disengage the nut screw means 18 from the drive shaft 12 to allow the free sliding of the latter within the hollow portion 20 of the scroll element 13 and therefore the opening and / or manual closing of the respective door 7.

The automatic opening / closing device described above is susceptible of numerous modifications and variations within the scope of protection defined by the content of the claims.

As shown in Figure 6, in fact, a device 1 can comprise as actuation means a linear actuator 30 composed, for example, of a cylinder-piston assembly 31 having a cylinder 32 mounted on the crosspiece 6 of the support frame 3 free to perform angular excursions around an articulation axis y-y substantially parallel to the hinge 8 of the respective sash 7 and a piston 34 carried by the cylinder 32 and able to slide telescopically, on command, within the cylinder 32 itself so as to perform to and fro excursions ( indicated with the letter F) on a plane substantially orthogonal to the y-y articulation axis.

Advantageously, in the variant of the device 1 just described, the piston 34 is articulated, at its free end 35, at the end 16 of the lever 14, which is in turn integral in rotation, at its end 15, with the hinge 8 of the respective leaf 7 as in the previous configuration.

The device 1 also comprises a control unit (not shown in the figure) adapted to operate, in use, the piston cylinder unit 31 to move the piston 34 along its main axis z-z between a starting position and an arrival position so as to impose to the lever 14 and then to the respective sash 7, through the hinge 8, a corresponding angular excursion of predefined amplitude depending on the stroke F imposed on the piston 34.

The adoption of a cylinder-piston unit 31 is capable of achieving the same results described above if it is the piston 34 that is pivoted to the crosspiece 6 of the support frame 3 and the cylinder 32 intended to perform back and forth displacements along the axis z-z and to impose in this way to the lever 14 a corresponding angular excursion around the hinge 8.

The variant of the device 1 described above can be provided with friction means 48 to allow the disengagement of the device 1 from the respective sash 7 so as to allow the manual opening and / or closing of the latter. The friction means 48, which can be constituted, for example, by an electro-clutch, are preferably mounted in correspondence with the coupling between the lever 14 and the hinge 8.

In fact, the normal operation of the device 1 provides that, when a user commands the device 1 to open or close the sash 7 of a window frame 2, the control unit of the device 1 operates the electric clutch 48, by means of which it is It is possible to make the lever 14 rotate integrally with the hinge 8 and thus carry out the automatic opening or closing of the leaf 7.

If, on the other hand, there is an interruption of the electric current, the control unit deactivates the electric clutch 48 so as to obtain a rotatable engagement between the lever 14 and the hinge 8 and to allow a user to manually perform the opening and / or the closing the door 7 without requiring excessive effort or risking compromising the functionality of the internal device 1.

Figure 7 shows a second variant of the device 1, which adopts as the actuation means a linear actuator 30 comprising a double-acting cylinder-piston assembly 41 having the cylinder 42 mounted on the crosspiece 6 of the support structure 3 and the piston 43 supported by the cylinder 42 and having a distal portion from the respective cylinder 42 shaped like a rack 45, which is constrained to slide, in use, along a linear guide 46.

The device 1 also comprises a toothed wheel 47 mounted on the hinge 8 and able to rotate, in use, integrally with it and an idle wheel 48 supported by a frame 49 intended to perform, on command, linear excursions G parallel to the z-z axis of the cylinder-piston assembly 41 so as to move the idle wheel 48 between a working or engagement position, in which it meshes simultaneously with the rack 45 and with the toothed wheel 47, and a rest or disengagement position with respect to the toothed wheel 47 . The linear to and fro excursions G of the frame 49 and therefore of the idle wheel 48 can be controlled by an electromagnet 50 composed of a solenoid 51 fixedly mounted with respect to a support 52 and an element 53 integral with the frame 49 and designed to slide internally to the solenoid 51 under the influence of the magnetic field developed, in use, by the latter so as to impose an engagement or disengagement stroke on the frame 49 G.

A third variant of the device 1 is shown in Figures 8 and 9, in which it can be seen how the actuation means consist of a motor 54 capable of generating a rotational motion around a substantially vertical w-w axis and parallel to the x-x axis of the hinge 8. Downstream of the motor 54 there is a planetary reduction gear 56 so as to impart to a toothed wheel 57 mounted on the shaft 58 driven by the reduction gear 56 a predefined rotation around its own axis w-w.

Also in this case, the device 1 comprises a toothed wheel 59 mounted on the hinge 8 and able to rotate, in use, integrally with it and an idle wheel 60 supported by a frame 61 intended to perform, on command, linear excursions H so as to move the idle wheel 60 between a working or engagement position, in which it meshes simultaneously with the toothed wheel 57 and the toothed wheel 59, and a rest or disengagement position with respect to both the toothed wheels 57 and 59. linear to and fro H of the frame 61 and therefore of the idle wheel 60 can be controlled by an electromagnet 62 adapted to act along the axis t-t.

A further variant of the device 1 can be the one illustrated in Figures 10 and 11, in which the adoption of a motor 64 is provided which is designed to rotate, in use, a worm screw 65 around the z-z axis, skewed with respect to the x-x axis of the hinge 8. The worm 65 is mounted in a condition of engagement with a toothed wheel 67 integral in rotation with the hinge 8 so that an angular excursion corresponds, in use, to a predefined number of revolutions of the worm 65. of the toothed wheel 67, which, in turn, imposes an angular movement on the hinge 8 and therefore on the respective sash 7 around the x-x axis of opening or closing according to the direction of rotation of the worm 65.

Also in this case, in order to allow the disengagement of the device 1 with respect to the sash 7, an electro-clutch 68 may be provided, for example, arranged between the toothed wheel 67 and the hinge 8 in such a way as to obtain a rotatable engagement of the hinge 8 on the crosspiece 6 of the support frame 3 and therefore to allow the manual opening and / or closing of the window frame 2.

The materials as well as the dimensions can be various according to the needs.

Claims (18)

CLAIMS 1. Motorized device for opening / closing a window or door, said window frame comprising a support frame formed by at least one pair of lateral uprights and an upper crosspiece, at least one sash mounted rotatably on said support frame and a pin or hinge for each sash able to rotatably support the respective sash on said support frame and to rotate, in use, integral with it, said device being characterized in that it comprises articulated transmission means constrained in rotation with said pin or hinge and able to transmit to said bating a rotational motion around the respective pin or hinge and actuation means kinematically connected to said articulated transmission means and able to impart to them a predefined angular excursion around said pin or hinge so as to move the respective leaf between a closed position and at least one open position. 2. Device according to claim 1, characterized in that said actuation means comprise at least one reversible motor mounted on said support frame free to perform angular excursions around an articulation axis substantially parallel to said pin or hinge. 3. Device according to claim 1 or 2, characterized in that said articulated transmission means comprise a drive shaft driven by said reversible motor so as to receive a rotary motion for a predefined number of revolutions both in one direction of rotation and in the other, at least one scroll element slidably mounted along said drive shaft and at least one lever having one end integral in rotation with said pin or hinge and the other end articulated to said scroll element so as to transform the rotation motion into a or in the opposite direction of said drive shaft in a corresponding angular excursion of the respective sash around its own pin or hinge. 4. Device according to claim 3, in which said scroll element comprises at least a hollow portion acting as a sliding seat for said drive shaft and nut screw means housed within said hollow portion and engageable to said drive shaft to transform the motion of rotation in one direction or the other of said drive shaft in a corresponding linear outward or return excursion of said scroll element along said drive shaft, said device being characterized in that said nut screw means are configured in such a way as to to engage at least an angular portion of said drive shaft and are movable, on command, within said hollow portion between a working position, in which they engage said drive shaft and a rest position, in which they are set back and disengaged with respect to said drive shaft. 5. Device according to claim 3 or 4, characterized in that it comprises an actuation device carried by said scroll element and able to move, on command, said nut screw means between said rest position and said working position. 6. Device according to claim 5, characterized by the fact that said actuation device comprises a support casing fixed to said scroll element, at least one solenoid housed within said support casing with a longitudinal axis transverse to said drive shaft and an element with still disposed internally to or to each solenoid and having an end mechanically connected to said nut screw means. 7. Device according to claim 5 or 6, characterized in that it comprises return means between said nut screw means and the respective solenoid able to disengage said nut means from the respective drive shaft when said solenoid is deactivated. 8. Device according to any one of the preceding claims, characterized in that said actuation means are carried by said support frame. 9. Device according to claim 1, characterized in that said actuation means comprise at least one linear actuator having a first portion mounted on said supporting frame free to perform angular excursions around an articulation axis substantially parallel to said pin or hinge and a second portion supported by said first portion and adapted to perform, upon command, to and fro excursions with respect to said first portion on a plane substantially orthogonal to said articulation axis. 10. Device according to claim 9, characterized in that said first portion of or of each linear actuator comprises a cylinder or a piston of a cylinder-piston group and by the fact that said second portion respectively comprises a piston or a cylinder of said group cylinder-piston. 11. Device according to claim 9 or 10, characterized in that said articulated transmission means comprise at least one lever having one end integral in rotation with said pin or hinge and the other end pivoted on said second portion. 12. Device according to claim 9, characterized in that said first portion of or of each linear actuator comprises a cylinder or a piston of a cylinder-piston group and by the fact that said second portion respectively comprises a piston or a cylinder of said group cylinder-piston, said second portion being rack-shaped at least in a region distal from said first portion. 13. Device according to claim 12, characterized in that said transmission means comprise a toothed wheel integral in rotation with said pin or hinge and adapted to mesh, in use, with said rack. 14. Device according to claim 9, characterized in that said second portion of or of each linear actuator is rack-shaped and supported by said first portion and by the fact that it comprises at least one pinion adapted to mesh with said second rack portion to impose to it to flow within said first portion so as to perform linear to and fro excursions. 15. Device according to claim 14, characterized in that said articulated transmission means comprise at least one lever having one end integral in rotation with said pin or hinge and the other end pivoted to said second rack portion. 16. Device according to any one of claims 9 to 15, characterized in that it comprises friction means between said actuation means and said transmission means or between said transmission means and the respective pin or hinge suitable for ensuring the coupling of the themselves in the opening / closing phase of the respective leaf and their decoupling if it is preferred or necessary to manually open or close said leaf. 17. Device according to claim 16, characterized in that said friction means are of a fluid-dynamic nature. 18. Device according to claim 16, characterized in that said friction means are of an electromagnetic nature.