BE1026220B1 - Tilt-and-turn window with motorized and manual opening - Google Patents

Abstract

The invention relates to a device for motorized opening and closing bellows of a window (200) tilt and turn closing an opening plane and comprising an opening (220) and a frame (210), which device comprises: at. a rigid chain jack (301), installed in the frame of the frame (210) and able to produce a thrust and a traction in a direction perpendicular to the plane of the opening; b. a disconnectable coupling assembly comprising a coupling member (511) fixed to the end of the chain of the chain cylinder and a coupling member (521) integral with the opening, able to cooperate; c. characterized in that it comprises a mechanism for moving the coupling member secured to the opening, parallel to the opening plane, and making the connection or disconnection of the opening with the rigid chain cylinder.

Description

The invention relates to a tilt-and-turn window with motorized and manual opening. Such a window, or French window, is capable of being opened and closed according to a so-called French opening, around a vertical pivot axis, or according to a so-called bellows opening, along a horizontal pivot axis. The bellows opening is advantageously used to provide ventilation of a room while preventing access to said room. Switching from one opening mode to another, in manual mode, is achieved by operating the window handle. The window object of the invention has the advantage of being able to be further opened and closed in a motorized manner according to the bellows opening mode.

The motorization of a window, window or door window generally poses the problem of integrating the motorization means. Advantageously, these motorization means are integrated into the frames of the opening and / or of the frame so as to avoid significant installation work on the structure of the building openings. However, in this case, the difficulty resides in the fact of retaining frames of reduced thickness and width so as to retain a large glazed surface and not having unsightly protrusions inside or outside the building. . The largest dimensions of the sections constituting the frames are located in the plane of the opening or in a plane parallel to it. On the other hand, the push-pull action necessary for the opening and closing is generally directed in a direction normal to this plane, hence the difficulty of integrating the motorization means while retaining the chassis thickness. To this end, the motorization systems generally use mechanisms implementing a compass deploying by a system of articulated links for the opening, which compass has a reduced bulk in non-deployed mode. The compass mechanism is deployed and retracted by acting on one of its ends by a displacement parallel to the greatest length of the profile in which the motorization means are installed, for example by means of a screw-nut system. Document DE 10 2007 007 997 describes such a compass mechanism.

These compass systems have drawbacks. First, the proportionality between the movement of the end moved by the motor and the movement of the end connected to the leaf is variable during the opening-closing movement. Thus, starting from the closed window, a small displacement

BE2019 / 5225 from the end of the compass on the motor side, produces a large displacement on the opening side. FIG. 1 shows an example of the evolution of the ratio (102) between the movement of the opening leaf and that of the movement of the end of the compass moved by the motor, as a function of the movement of the end connected to the motor (101 ) for a mechanism such as that disclosed in document DE 10 2007 007 997. The unfavorable leverage multiplies the forces on the joints, the links and the engine which must be dimensioned accordingly. For example, the effort required to compress the joints when applying the sash to the frame when closing, while the compass links are almost aligned, results in an effort more than 10 times higher than the end of the compass moved by the engine, which implies that the engine is able to produce a large static torque. Under the effect of these efforts the system is likely to wear out and take up play. The connection between the end of the compass and the opening is necessarily a pivot connection whose axis is substantially parallel to the plane of the surface. glass of the opening and which intervenes by pushing the opening when opening and pulling the opening when it is closed. When the operation of the window must be able to be carried out both manually and motorized, it is necessary to provide a mechanism for uncoupling this connection in manual operation mode and for coupling this connection in motorized mode. However, the realization of a disconnectable pivot link capable of working by pushing and pulling according to a reliable mechanism over time is not easy, it requires moving parts and return and locking systems which are all sources potential for malfunction. Finally, the compass technology limits the opening achievable by the very dimensions of the compass.

The invention aims to solve these drawbacks and to this end relates to a device for the motorized opening and closing in bellows of a tilt-and-turn window closing an opening plane and comprising an opening and a frame, which device comprises:

at. a rigid chain jack, installed in the frame of the frame and capable of producing thrust and traction in a direction perpendicular to the plane of the opening;

b. a disconnectable coupling assembly comprising a member

BE2019 / 5225 coupling fixed to the end of the chain of the chain jack and a coupling member integral with the leaf, capable of cooperating

vs. a mechanism for moving the coupling member integral with the opening, parallel to the opening plane, and for connecting or disconnecting the opening with the rigid chain actuator.

Thus, the chain actuator makes it possible to apply the opening-closing force directly to the opening element without leverage and with constant proportionality between the displacement of the actuator motor and the displacement of the opening element. The connection-disconnection system of the chain actuator with the opening allows to pass from a manual opening-closing mode, the system being uncoupled, to a motorized opening-closing mode, the system being coupled. This coupling system is simple, with no additional moving parts, making the coupling device more compact and more reliable. In situations where the force to be applied to the sash is greatest, for example when closing the window in strong winds or compressing the seals at the end of the stroke, the chain acts in traction on the sash , which corresponds to the most favorable operating conditions of a chain actuator, thus allowing the optimization of the choice of said motor for a reduced bulk and a larger glass surface. According to this embodiment, the window comprises a device for locking the opening in the frame independent of the motorized coupling and opening-closing device.

The invention is advantageously implemented according to the embodiments and the variants set out below, which are to be considered individually or according to any technically operative combination.

Advantageously, the coupling member integral with the opening is fixed to a sliding fitting in the frame of the opening, and the device comprises:

d. means for locking the opening in the closed position comprising a bolt and a keeper, one of the bolt or keeper being linked to the sliding fitting and moving therewith;

e. an operating pin fixed to the sliding fitting;

f. a maneuvering fork integral with the frame and acting on the maneuvering pin when the window is in the closed position and whose

BE2019 / 5225 the opening is perpendicular to the direction of movement of the door when the bellows opens and closes;

g. means comprising a locking motor, installed in the frame of the frame, for displacing in translation the sliding fitting of a stroke of length Z;

I the length stroke l of the sliding fitting starting from the closed and locked position of the window, connecting the chain coupling members and those secured to the leaf, while moving the bolt away from the strike to allow the opening of the window.

Thus, the coupling means of the chain motor and the locking means of the opening cooperate during the opening and closing cycles. The connection of the opening with the motorized means, as well as the locking of the opening in the frame are made by the same means, which simplifies the mechanism by limiting the linkages and the moving parts. The orientation of the opening of the maneuvering fork allows the maneuvering pin to escape from it when the opening is opened and to insert it again when the opening is closed. 'opening.

According to an advantageous embodiment, the maneuvering pin having a diameter 20 d, the means for moving the maneuvering fork have a stroke capacity at least equal to Z and the opening of the maneuvering fork is at least equal to l + d. This embodiment saves a declutching system at the level of the drive fork drive motor.

Advantageously, the opening of the operating fork comprises an inlet opening of at least equal length (Z + cZ) centered with respect to an oblong opening of length at least equal l + 2d, in this case the stroke capacity minimum of the locking motor is equal to the width of the inlet opening. This embodiment allows the compression of the joints between the sash and the frame to be kept during the locking and unlocking operations of the sash.

BE2019 / 5225

According to one embodiment, the coupling members comprise a coupling pin and a gripping fork, one of the coupling pin or the gripping fork being fixed to the end of the chain of the rigid chain jack and the other being integral with the opening, the opening of the gripping fork 5 being oriented to allow the insertion of the pin in said fork by a translation in a direction substantially parallel to the largest dimension of the frame profile in which the locking motor is installed. This embodiment uses simple members (pin and fork) to produce the coupling of the chain actuator with the opening element in a translational movement.

According to a variant of this embodiment, the coupling pin is linked to the sliding fitting and the grip fork is linked to the chain of the chain jack.

According to another variant of this embodiment, the coupling pin is linked to the chain of the chain jack and the gripping fork is linked to the sliding fitting.

These two alternative embodiments make it possible to carry out the functions of the device which is the subject of the invention, the second variant allows better guidance of the end of the chain in its movements when it is not integral with the gripping fork.

Thus, according to this second variant embodiment, the device which is the subject of the invention comprises a means for rectilinear guidance of the coupling pin in its movements which are not connected to the gripping fork.

Advantageously, the connection pin is made of a ferromagnetic material, the grip fork is made of a non-magnetic material and the grip fork comprises a permanent magnet for holding the connection pin in said grip fork. Thus, the maintenance of the connection pin in the grip fork is improved, in particular when the chain is deployed in the presence of wind.

The invention also relates to a method for the motorized opening in bellows of a tilt-and-turn window using the device of the invention according to any one of its modes or variant of embodiment, and comprising, starting from a locked and closed window configuration the steps

BE2019 / 5225 consisting of:

i. move the end of the chain by means of the chain jack to align the chain coupling member with the leaf coupling member;

ii. move the sliding fitting by means of the locking motor and the operating fork so as to connect the coupling members of the chain and of the leaf, releasing the locking means;

iü. deploy the chain by means of the chain jack so as to move the opening 10 in a bellows opening mode;

iv. retract the chain so as to close the opening;

v. when the door is closed, move in the opposite direction to step ii) the sliding fitting so as to disconnect the coupling members and lock the door in the closed position;

vi. retract the chain until the chain coupling members are outside the travel of the coupling means of the leaf on the sliding fitting.

Thus, in the closed closed position of the opening, the chain is not connected to the opening, preserving the possibility of manual opening of the latter in 20 bellows or French.

Advantageously, the process which is the subject of the invention implements the device which is the subject of the invention according to one of these embodiments in which the operating fork has an opening of width at least equal to (1 + d) and comprises between the steps ii) and iü) and between steps v) and vi) a step consisting in:

vi. move the grip fork in the opposite direction to the previous step by a stroke equal to the locking stroke without causing the shift fork

Thus, the combination of the method and the device which is the subject of the invention allows the device, by means of a simplified device, to always obtain the opening in a configuration allowing manual or motorized opening when it is closed locked.

The invention is set out below according to its preferred embodiments,

BE2019 / 5225 in no way limitative, and with reference to Figures 1 to 10, in which:

- Figure 1 relating to the prior art shows the evolution of the displacement ratio at the ends of a compass;

- Figure 2 shows in a perspective view an embodiment 5 of a window implementing the device object of the invention;

- Figure 3 shows the window of Figure 2, in partial view and without the upper cross member of the frame;

- Figure 4 shows in a perspective view an embodiment of the chain of a rigid chain cylinder;

FIG. 5 schematically represents in top view the operation of the device which is the subject of the invention according to one embodiment;

- Figure 6 shows schematically a top view of the operation of the device object of the invention according to another embodiment;

- Figure 7 shows a top view of an embodiment of the operating fork of the device object of the invention;

- Figure 8 shows in a perspective view an embodiment of the device shown schematically in Figure 6;

- Figure 9 is a bottom view of an exemplary embodiment of the device object of the invention;

- And Figure 10 is a flowchart of an exemplary embodiment of the method of the invention.

Figure 2, the device object of the invention is adapted to a window (200) or a French window obscuring an opening in a building, according to an opening plane parallel to the glass surface (230). The window comprises a sleeping frame (210) fixed to the structure of the building and an opening frame (220) supporting the glazed surface.

The frame of the sash and the frame, quadrangular in shape, are made of hollow profiles made of aluminum alloy, PVC, wood or a combination of these materials. The window has gaskets between the sash and the frame, seals which are compressed when the sash is closed. The device object of the invention 30 is adaptable to an oscillating window, the opening of which is produced by the pivoting of the opening (220) relative to the frame (210) about a horizontal axis (201), or to a window tilt-and-turn, the opening of which is carried out either by pivoting

BE2019 / 5225 opening it around a horizontal axis (201) or around a vertical axis (202) relative to the frame. The window is opened and closed manually by means of a handle (240). According to an example of implementation in the case of a tilt-and-turn window, starting from the closed locked position of the window as shown, a rotation (241) of 90 ° of the handle (240) makes it possible to unlock opening it and opening it in a bellows opening by pivoting it around a horizontal axis (201). A 180 ° rotation (242) of the handle (240) unlocks the opening and opens it in the French fashion by pivoting it around a vertical axis (202).

The device which is the subject of the invention makes it possible to motorize the opening and closing of the opening in bellows, while preserving the possibility of manual opening-closing of the opening at least in bellows, and advantageously in bellows and at the French. The bellows opening or closing of the window, essentially for the purpose of ventilating the room comprising said window, can thus be triggered remotely by a switch, a remote control or an automated climate control unit, possibly controlling several windows of the room .

Figure 3, to this end, according to an exemplary embodiment, the window comprises a motorization assembly (300) housed in the upper cross section profile of the frame The motorization assembly comprises a rigid chain actuator and a so-called locking motor 20 able to move an element in translation.

Figure 4, a rigid chain actuator comprises a chain (400) whose links are provided with means, such as plates (401), to keep the links aligned with each other. The chain is driven by a sprocket (not shown). It is contained in the cylinder in a space-saving configuration in zig25 zag, and is guided in an outlet orifice. On passing this orifice, the plates (401) and the links align and lock together, so that the chain is able to be subjected to compression stress while remaining aligned, and is thus able to transmit a thrust force, and of course traction. Due to the locking of the links between them, the chain also has a certain rigidity with respect to the transverse stresses.

The chain being folded in the jack, such a jack allows, with a reduced bulk, to obtain a significant displacement, which proves useful for

BE2019 / 5225 smoke extraction operations for example, requiring a large bellows opening. Throughout this large displacement, the displacement of the opening element is directly proportional to the displacement of the motor, which makes it possible to finely adjust the targeted displacement of the opening element and simplifies the electronic control card 5 of the motor.

The forces transmissible by the chain in tension and in compression, as well as the admissible transverse forces depend on the locking technology used. For a cylinder with a reduced footprint chain as in the case of the invention, the capacity is high in traction, less important in compression 10 and weaker vis-à-vis the lateral stresses. Also, it is desirable that the deployed part of the chain is kept in line to take advantage of the maximum capacities.

Figure 5, according to an exemplary embodiment of the device object of the invention, the end of the chain (400) comprises a connection member in the form of a pin (511) and the opening comprises a sliding fitting ( 520) supporting a connection member in the form of a gripping fork (521). The connection pin (511) extends in the vertical direction, in the direction of the negative z according to the figure, the opening of the grip fork (521) is oriented so as to capture the connection pin (511) by a displacement in the direction of positive x.

According to an alternative variant (not shown), the connection member fixed to the end of the chain is a fork and the connection member fixed to the sliding fitting (520) is a pin, the opening of the fork being oriented so as to allow the insertion of the pin therein in a displacement in the direction of the positive x of said sliding fitting. The device comprises a chain jack (301) and a locking motor (302) capable of moving a maneuvering fork (512) in a translation parallel to the opening plane (x, z) of the window. These motors (301, 302) are placed in the upper cross member profile of the frame (210). According to variants, the locking motor (302) is also a chain jack, acting in the large direction (x) of the frame profile, or a gearmotor acting on a rack and pinion assembly or on a screw-nut assembly. The sliding fitting (520) is guided in translation in the profile of

BE2019 / 5225 upper cross member of the sash. It comprises an operating pin (522) which cooperates with the operating fork (512) to move said fitting (520) when the window is in the closed position and the upper cross-section profiles of the leaf and the frame are opposite. According to this exemplary embodiment, the maneuvering fork has an opening substantially equal to the diameter of the maneuvering pin. Also this embodiment is more suitable for a window that can be opened exclusively with a gaiter in an automated or manual manner. According to this exemplary embodiment, a device for locking the opening in the frame comprises a keeper (513) linked to the frame and a bolt (523) linked to the sliding fitting and moving with it. Thus, the same device performs both the connection-disconnection operations of the chain actuator with the sliding fitting and the locking of the sash in the frame. The sliding fitting is also linked to the window handle by a linkage (not shown) so that the rotation of this handle also displaces said fitting in translation. The figure

5A shows the configuration of the device just before a motorized bellows opening of the window. In the instant preceding this configuration, the operating fork (512) pushed, in the direction of the positive x, the sliding fitting (520) which has the effect of separating the bolt (523) from the keeper (513) and unlock the opening, at the same time as capturing the connection pin (511) of the chain by the grip fork (521). The leaf is linked to the end of the chain (400) and unlocked, the actuation of the chain jack causes the chain (400) to exit, in the negative y direction, and the bellows opening of the 'opening.

Figure 5B, the opening having been closed by the chain jack, the upper cross-section profiles of the opening and of the frame are again facing each other. The locking motor (302) is actuated so as to produce, by means of the operating fork (512) a displacement in the negative x direction along a stroke of length l of the sliding fitting (520), which has the effect of introducing the bolt (523) in the strike (513) and locking the door in the frame. During this same locking translation, the gripping fork (521) releases the connection pin (511) from the chain. The chain (400) is then retracted in the chain cylinder, in the direction of the positive y, so as to distance

BE2019 / 5225 the alignment connection pin with the grip fork. The window is then closed and locked and possibly manually operable.

Figure 5C, starting from the closed and locked position of the opening, a maneuver of the window handle, for a bellows opening or a French opening, causes, via the linkage, a displacement of the sliding fitting according to the positive x of a length stroke /. The chain being retracted, the gripping fitting (521) does not capture the connection pin during this stroke, but the bolt (523) is moved away from the keeper (513), the leaf is unlocked, the opening of the maneuvering fork, oriented along the y axis, is not opposed to the exit of the maneuvering pin from said maneuvering fork and the window is opened manually. This technical solution limits the stroke capacity of the locking motor (302) to the length l. However, in order to be able to operate the handle and move the sliding fitting (520) while the operating pin (522) and the operating fork (512) are in engagement, it is necessary that the connection between the operating fork and the locking motor (302) is disengaged and therefore disengageable. There are many technical solutions for this purpose, which can be integrated into a geared motor group, however, this complicates the mechanism. In addition, to allow the opening to the French it is necessary that the clearance between the maneuvering fork and the maneuvering pin is sufficient to accommodate the circular trajectory, admittedly very short, of the maneuvering pin in the maneuvering fork during of this type of opening.

The embodiment of Figure 6 overcomes these drawbacks. According to this embodiment, the operating fork (612) has an opening with a width at least equal to l + d, d being the diameter of the operating pin (522) and l 25 the length of the stroke of the sliding fitting ( 520) to carry out the locking and unlocking of the opening, as well as the capture and release of the connection pin (511) by the grip fork (521). The gripping fork as shown diagrammatically is a simple fork, FIG. 7 represents an improved embodiment of the gripping fork.

Figure 6A the window is closed and locked. The connection pin (511) is retracted so that it is no longer aligned with the grip fork (521),

BE2019 / 5225 the bolt (523) and the strike (513) are engaged one in the other, the grip fork (612) is positioned so that the maneuvering pin (522) is in contact with the fork on the negative x side. From this configuration, it is possible, after unlocking, to open the window either manually, in bellows 5 or French, or in bellows in a motorized manner.

Figure 6B, for a manual opening of the window, bellows or French, the operation of the window handle causes through the rod a displacement in the positive x direction of the sliding fitting (520) according a stroke of length Z. The maneuvering pin being in contact with the opening of the maneuvering fork on the side of the negative x, there is nothing to prevent this displacement of the sliding fitting. The connection pin (511) being retracted, this translation of the sliding fitting does not cause said pin to be captured by the grip fork. The displacement of the sliding fitting disengages the bolt (523) from the keeper (513), thus unlocking the opening, which opens freely in bellows or in the French fashion.

Figure 6C, to achieve a motorized bellows opening of the window, starting from the closed and locked configuration as shown in Figure 6A, the chain is first moved in the negative y direction, so as to align the connection pin (511) with the opening of the gripping fork (521). Then, by means of the locking motor (602) the operating fork (612) is moved along the positive x of a stroke of length Z. This stroke disengages the bolt (523) from the keeper (513) causing unlocking of the opening, at the same time as it captures the connection pin (511) by the grip fork (521). Then the chain is deployed to cause the bellows opening 25 of the opening. According to one embodiment, parallel to the start of motorized opening, the operating fork is moved by a length Z in the negative x direction so as to anticipate the locking operations when the opening is closed.

Figure 6D, starting from the previous configuration, the opening is opened and then closed by motorized means. Following the motorized closing of the opening, the

BE2019 / 5225 upper crosspieces of the sash and the frame are opposite, the maneuvering pin (522) is reintroduced into the opening of the maneuvering fork (612). The operating fork is driven in a stroke of length l along the negative x, which has the effect of engaging the bolt (513) in the strike plate (523) and of locking the leaf, at the same time as releasing ie connection pin (511) of the gripping fork (521).

Figure 6E, starting from the configuration of Figure 6D, the chain is retracted in the positive y direction so as to move the connection pin (511) out of alignment with the grip fork (521). The locking motor 10 moves the maneuvering fork (612) by a length l along the positive x so as to replace the maneuvering pin in contact with the opening of the maneuvering fork on the side of the negative x. This movement of the operating fork does not cause displacement of the sliding fitting, ie the bolt and the keeper remain engaged one in the other. After these maneuvers, the device returns to the configuration of FIG. 6A, and the maneuvering pin is positioned in the maneuvering fork so as to allow the sliding fitting to move in the positive x direction to achieve manual unlocking

It is of course possible to use a fork with an opening wider than l + d to obtain a similar result. In this case, the stroke capacity of the locking motor must be greater. Thus, according to a particular embodiment, the opening of the operating fork is equal to 2l + d, for a simple fork. In this case, the travel capacity of the locking motor is at least equal to 21. The corresponding configurations of the operating fork are shown in dotted lines in FIGS. 6A to 6E. Such a configuration is for example used in the case where the sliding fitting is displaced by a stroke l in the positive x direction to perform the unlocking and authorize manual opening in bellows, and by an additional stroke of length Z , a total stroke of 21, to authorize manual French opening. In such a configuration, after the locking maneuver following the motorized closing, the maneuvering fork is advantageously moved

BE2019 / 5225 in the opposite direction to the previous movement (unlocking and locking maneuvering strokes) so as to place the maneuvering pin substantially in contact with the maneuvering fork on the side of the negative x and allow manual unlocking movements.

Figure 7, according to an exemplary embodiment, the opening the maneuvering fork (712) comprises an inlet opening of width (701) at least equal to l + d, l being the stroke necessary for the disengagement of the locking means of opening it in the frame, and d the diameter of the maneuvering pin, and an oblong opening of width (702) at least equal to l + 2d, the stroke capacity of the motor being at least equal to l + 2d. Figure 7 shows in dotted lines the position of the maneuvering pin (522) in the opening of the maneuvering fork in the closed and locked configuration of the opening.

In the exemplary embodiment where the manual opening of the window in a French mode is carried out by an additional displacement of the sliding fitting 15 of a length l in the direction of the positive x opposite the unlocking stroke of the manual mode! bellows opening, the opening of the maneuvering fork (701) according to this embodiment is at least equal to 21. In this case the minimum capacity of the motor is 2l + d, and the width (702) of the oblong opening is 2l + d.

The cylindrical ends of the oblong groove make it possible to keep the maneuvering pin in the y direction when the sliding fitting is moved, to lock or unlock the door, and thus to keep the compression of the joints between the door and the frame during of these displacements. These provisions favor a precise alignment of the strike and the bolt as well as the maneuvering pin and the grip fork.

Figure 8, the grip fork (521) advantageously comprises a permanent magnet (821) placed near the bottom of said fork in order to maintain the connection pin (511) at the bottom of the grip fork during deployment and retraction of the chain during the opening and closing operations of the opening. To this end, the gripping fork consists of a

BE2019 / 5225 non-magnetic material transparent to the magnetic field generated by the magnet (821), and the connection pin (511) is made of a ferromagnetic material. This magnet helps keep the chain in line when opening or closing the opening, and prevents it from being ejected from the fork, especially in the presence of 5 wind. The magnet (812) is selected so that the force exerted by the grip fork (712) on the sliding fitting is sufficient to move the grip fork away from the connection pin despite the magnetic holding force. The connection pin (511) is advantageously in the form of a diabolo so that it is held in the grip fork also in the vertical direction (z).

Figure 9, to ensure that the chain of the chain cylinder remains in line, a guide means (910) of the connection pin is installed in the frame. The device is here represented in the configuration of FIG. 6D, seen from below, without the chain to clarify the figure. The guide device (910) guides the connection pin (511) in the direction y, by means of a groove (911) of width equal to the diameter of the connection pin, in its movements when it is not not connected to the grip fork, that is to say in its withdrawal movement after locking the frame, or in its movement for its alignment with the grip fork.

The sequences and displacement values of the chain actuator and of the locking motor are controlled by an electronic card, implementing the process which is the subject of the invention. Thus, in FIG. 10, starting from the locked locked position of the window, according to a first control step (1010), the device receives an bellows opening order. Upon receipt of this order, according to an alignment step (1020 ), the chain jack is actuated to bring the connection pin into alignment with the grip fork. The connection pin and the gripping fork being aligned, according to an unlocking step (1030), the locking motor is actuated to move the sliding fitting by means of the operating fork, of a stroke of length l so as to separate the bolt from the strike and capture the connection pin with the grip fork.

Advantageously, according to a repositioning step (1040), the fitter of

BE2019 / 5225 locking is actuated so as to move the maneuvering fork in the opposite direction and reposition the pin in the opening of the maneuvering fork so as to allow the bellows to open. For example, in the case of the use of a fork as shown in FIG. 7, at the end of the unlocking step, the maneuvering pin is caught in the cylindrical part of the oblong groove on the side of the x negative. To allow the bellows to open in the opening, the operating fork is moved during the repositioning step (1040) by a distance at least equal to d / 2.

According to an opening step (1050), the chain actuator is actuated so as to move the sash to the desired opening.

Advantageously, during the opening step (1050), the repositioning step (1040) is continued to move the maneuvering fork by an additional length, l or 21 depending on the configuration, in the direction of the negative x relative to its position at the end of the unlocking step (1030), so as to anticipate part of the movements made during the locking step occurring during a subsequent motorized closing operation of the window.

According to a second control step (1060) the system receives a closing order. According to a closing step (1070), the chain jack is actuated so as to retract the chain and bring the sash closer to the frame. The sash being in contact with the frame and the seals compressed under the action of the chain, according to a locking step (1080), the sliding fitting is moved so as to release the connection pin and to engage the bolt in the keeper. In practice, when using a fork as shown in Figure 7, this locking step takes place in two sub-steps:

- The opening being closed, the maneuvering pin being located substantially in the middle of the opening of the maneuvering fork, the compression of the seals is ensured by the traction exerted by the chain jack on the opening, the the maneuvering fork is moved until the maneuvering pin is caught in the cylindrical end of the oblong opening of the fork. This maneuver does not move the sliding fitting.

- The maneuvering pin being kept in the maneuvering fork, the effort

BE2019 / 5225 of traction produced by the chain jack is released without movement of the chain, and the continuation of the stroke of the operating fork causes the displacement of the sliding fitting carrying out the locking of the frame and the disconnection of the grip fork and the maneuver pawn. As the chain no longer exerts tension, the connection pin is easily removed from the grip fork.

According to a step (1090) the chain of the chain jack is retracted to take the connection pin out of alignment with the connection fork. Finally, a repositioning step (1040) makes it possible to reposition the maneuvering pin 10 in the opening of the maneuvering fork, by moving the maneuvering fork in the positive x direction in order to authorize the displacements of the sliding fitting at the during manual unlocking operations. In the case of a fork such as that of FIG. 7, this repositioning movement is equal to the total unlocking stroke, ie Z, if the unlocking by means of the mechanism object of the invention relates only to the opening bellows, or 21, if an additional movement is made for the French opening.

The above description and the exemplary embodiments show that the invention achieves the intended goal, and allows the motorization of an oscilio-casement window with respect to its bellows opening by simple and reliable means while retaining the 20 possibilities for manual opening and closing. The system in principle can be used for a motorized bellows opening associated with a manual bellows opening, and, if necessary, a manual French opening, using a locking system controlled by the same device or independently of this. device. Thus, the system object of the invention is suitable for the motorization of any type of oscillating or oscilio-casement window, for the first installation or for renovation.

Claims (10)

1. Device for the motorized opening and closing in bellows of a tilt-and-turn window (200) closing an opening plane and comprising an opening (220) and a frame (210), which device comprises: at. a rigid chain cylinder (301), installed in the frame of the frame (210) and capable of producing thrust and traction in a direction perpendicular to the plane of the opening; b. a disconnectable coupling assembly comprising a coupling member (511) fixed to the end of the chain of the chain jack and a coupling member (521) integral with the leaf, capable of cooperating; vs. characterized in that it includes a mechanism for moving the coupling member integral with the opening, parallel to the opening plane, and for connecting or disconnecting the opening with the rigid chain actuator. 2. Device according to claim 1, in which the coupling member integral with the opening element is fixed to a sliding fitting (520) in the frame of the opening element, and the device comprises: d. means for locking the opening in the closed position comprising a bolt (523) and a strike (513), one of the bolt or strike being connected to the sliding fitting (520) and moving therewith; e. an operating pin (522) fixed to the sliding fitting (520); f. a maneuvering fork (512, 612, 613, 712) integral with the frame (220) and acting on the maneuvering pin (521) when the window is in the closed position and whose opening is perpendicular to the direction of movement of the 'opening during the opening-closing bellows; g. means comprising a locking motor (302,602), BE2019 / 5225 installed in the frame of the frame, to move in sliding the sliding fitting of a stroke of length l; I the length stroke l of the sliding fitting (520) starting from the closed and locked position of the window, connecting the members 3. Device according to claim 2, in which the maneuvering pin (521) having a diameter d _t the means for moving the 10 maneuvering fork have a stroke capacity at least equal to Z and the opening of the maneuvering fork is at least equal to l + d. 4. Device according to claim 3, wherein the maneuvering fork (712) comprises a length entry opening at 15 less equal (l + d) centered with respect to an oblong opening of length at least equal l + 2d, the minimum stroke capacity of the locking motor being equal to the width of the entry opening. 11. The method of claim 10 using a device according to claim 3, comprising between steps ii) and iii) and between steps v) and vi) a repositioning step (1040) consisting of: vi. move the gripping fork in the opposite direction to the previous step by a stroke equal to the locking stroke without 5 (521) is linked to the sliding fitting (520). 5. Device according to claim 2, in which the coupling members comprise a coupling pin (511) and a 20 gripping fork (521), one of the coupling pin or the gripping fork being fixed to the end of the chain (400) of the rigid chain jack and the other being secured to the opening, (210) the opening of the gripping fork (521) being oriented to allow the introduction of the pin into said fork by a 25 translation in a direction substantially parallel to the largest dimension of the frame profile in which the locking motor (302, 602) is installed. 5 for coupling the chain and secured to the sash, while moving the latch away from the strike, so as to unlock the sash and allow the window to be opened. 6. Device according to claim 5, in which the coupling pin BE2019 / 5225 is linked to the sliding fitting (520) and the gripping fork (521) is linked to the chain of the chain jack. 7. Device according to claim 5, in which the coupling pin is linked to the chain (400) of the chain jack and the gripping fork 8. Device according to claim 7, comprising a rectilinear guide means (911) of the coupling pin in its displacements not connected to the gripping fork. 9. Device according to claim 7, in which the connection pin is 10 made of ferromagnetic material, the grip fork is made of a non-magnetic material and comprises a permanent magnet (821) for holding the connection pin (511) in the grip fork. (521) 10. Method for the motorized opening in a bellows of an oscillating window 15 casement using a device according to claim 2, and comprising, starting from a locked and closed configuration of the window, the steps consisting in: î. moving (1020) the end of the chain by means of the chain jack to align the coupling member of the chain with the coupling member of the leaf; ii. moving (1030) the sliding fitting by means of the locking motor and the operating fork so as to connect the coupling members of the chain and of the opening, releasing the locking means; iii. deploying (1050) the chain by means of the chain jack so as to move the opening element in a bellows opening mode; iv. retract (1070) the chain so as to close the opening; v. when the door is closed, move in the opposite direction to step ii) the sliding fitting (1080) so as to disconnect the coupling members and lock the door in position BE2019 / 5225 closed; vi. retract (1090) the chain until the chain coupling members are outside the travel of the coupling means of the leaf on the sliding fitting. 10 drive the operating fork.