EP2703595B1

EP2703595B1 - Tilting roller blind with guides for roof windows

Info

Publication number: EP2703595B1
Application number: EP13004211.2A
Authority: EP
Inventors: Tomasz Jeczmyk
Original assignee: Fakro PP Sp zoo
Current assignee: Fakro PP Sp zoo
Priority date: 2012-09-03
Filing date: 2013-08-27
Publication date: 2016-02-24
Anticipated expiration: 2033-08-27
Also published as: EP2703595A2; EP2703595A3; PL221436B1; PL400631A1

Description

The present invention relates to roof window assembly comprising a window having a frame and a sash, the assembly further comprising a tilting roller blind with guides set, basically designed for a said roof window, particularly the window that opens by rotating its sash around a horizontal axis located in the central zone of the window slightly above the half of window sash height. The tilting roller blind with guides according to the present invention may also be applied in windows installed vertically in walls.
Current state of the art. Solution, know from French application FR2595403 A1 describe a roller blind with guides designated for roof windows and suitable for being installed outsid the window. Roller blind comprises sliding guides, casing, flexible screen. Said window opens by rotation of its sash about an essentially horizontal axis together with roller blind, where said horizontal axis is located in the half of window sash height. Guiding slides of the roller blind being articulated, preferably, to the straight part of the upper crossbar of the window, along an essentially horizontal axis and roller blind casing is fixed to roofing in not tilting manner.
From the Polish patent description No. 205319 a screening device is known in the form of a roller blind or awning, designed for use on the outer side of a roof window, the said device being equipped with the casing mounted on the top member of window frame in articulated manner and also equipped with a set of two guides for sliding beam which terminates the flexible screen of the roller blind or awning and can be pulled out from its casing. In another version of this device, the casing is mounted on the window frame in a fixed position, and the guides of the screening device are connected with the casing in articulated manner. In both versions of this known solution, movement of both ends of the sliding beam in the guides is forced by cords which also stretch the flexible screen, but since this stretching action only occurs lengthwise the guides and the window, the flexible blind may sag or even contact the window glass, particularly when the window is closed and, therefore, the guides are in the position parallel to the window sash and the distance between the guides and the window sash is minimal.
The drawbacks of the above-mentioned prior art shall be avoided by the present invention, i.e. by means of a roof window assembly according to the present claim 1. For this purpose the roof window assembly comprises a roof window having a frame and a sash and further said assembly comprising tilting roller blind with guides set. Basically tilting roller blind is designed for said roof window and, particularly, for installation outside the window that opens by rotating its sash around a horizontal axis located slightly above the half of window sash height, the said roller blind comprising the flexible screen terminated with a sliding beam and having two screen guides for guiding this flexible screen located at the window sides, the said screen guides having the form of sections with open cavities directed towards each other and used for guiding the ends of the sliding beam, and also having edge cavities which guide the edges of flexible screen, in particular the screen made of fabric. Edge cavities of both screen guides feature slidable guiding inserts along these cavities and preferably made of plastic. Each guiding insert has two angular ribs arranged symmetrically in such a way that the longitudinal gap is formed between their arms which are bent and directed towards each other. Along the edges of the flexible screen, the catches are equidistantly fixed having the gripping elements with the width greater than the width of the slot in slidable guiding insert. These gripping elements are directed towards the outer side of the flexible screen and move inside the slidable guiding insert. When the sliding beam moves away of the casing, the beam ends are driven by cords wound on reels installed inside the casing and rewound through return pulleys installed at the guide ends opposite with respect to the casing. Moreover, the roller blind according to the invention is also equipped with the casing which is fastened in the tilting manner, particularly in articulated manner, to the top member of the window frame. In this casing the flexible screen is stored when it is coiled on the shaft, which is, in particular, driven by an electric motor installed inside the shaft. Also, the roller blind has the tilting guides connected with these window sash corners which are opposite the cassette; in such arrangement the set of guides is tilted during window opening and closing, preferably together with the casing, so as these guides keep up with the moving corners of the window sash.
In each screen guide, i.e. the left and right one, the edge cavity which guides the edge of the flexible screen is separated from the screen movement zone by two ribs located opposite each other. The width of longitudinal gap between the ends of these ribs is slightly greater than the distance between outer surfaces of angular ribs of the slidable guiding insert located inside the edge cavity. Preferably, the edge cavity in the screen guide form the deeper part of the cavity for guiding of the sliding beam and is separated from this cavity by two ribs located opposite each other.
The wall of slidable guiding insert, opposite with respect to the longitudinal gap in this insert, has outer arms that reach beyond the angular ribs of the insert at its both sides. These arms constitute the extensions of the central arm which extends between angular ribs and plays a role of the bottom of the cavity in guiding insert. Between the outer portions of this wall and the ribs which separate the edge cavity from the flexible screen movement zone the elastic inserts are provided, preferably made of cellular rubber; these elastic inserts push the slidable guiding inserts in both screen guides away towards outside and therefore stretch the flexible screen in the direction perpendicular to the screen unwinding direction.
The catch assemblies which operate together with the slidable guiding inserts are made in the form of sliding tapes fastened to the flexible screen along both edges. The gripping elements of each sliding tapes, which are located on the outer edge of the tape and move inside the slidable guiding inserts, are preferably made of plastic and have the form of oblong, continuous, spatial loop structure. This structure is composed of small loops arranged transversely with respect to the tape surface; the outer width of the loops is greater than the width of the gap in slidable guiding insert and the transverse loops are connected with each other by small longitudinal loops in such a way that each transverse loop connects through the longitudinal loop with the transverse loop adjacent to it from the casing side and through the another longitudinal loop with the transverse loop adjacent to it on the opposite side. The longitudinal loops are arranged alternately on both opposite surfaces of the tape, parallel to it, and are joined with the tape, particularly by welding. The sliding tape is made separately from the basic part of the flexible screen, and the edge of the tape which is opposite with respect to the edge equipped with catches is lap connected with the edge of the basic part of flexible screen.
In the casing designed for storage of flexible screen of the tilting roller blind the rewinding shaft is provided, located at this side of the casing where the flexible screen leaves the casing and enters into edge cavities in the guides. The rewinding shaft is bearing mounted in the bodies located at both casing ends which play a role of bearing components which connect the casing with the guides. Preferably, the rewinding shaft is mounted in sliding sleeves inserted into bodies from the outer side, and each body has the channel through which the neck of the shaft is inserted and which has the seat for sliding sleeve at its end. The diameter of the seat and the outer diameter of the sleeve are both greater than the channel width. Therefore, when the neck of rewinding shaft is inserted in the seat through the channel and sliding sleeve is slid over the neck, the shape-type connection is obtained which prevents movements of rewinding shaft and only allows the shaft to rotate in the sleeves.
The tilting guides are made in the form of sections with cavities in which the elements that connect the tilting guides with lower corners of the window sash move. Preferably, the cavities in both tilting guides are open and these openings face each other. The tilting guide can be made as the monolithic section with the flexible screen guide and its sliding beam, or can be made in the form of separate section, particularly extending parallel to the flexible screen guide and its sliding beam and joined with this guide. The tilting guide connects with the window sash through the pin which is preferably fastened to the cover plate fixed to the window sash frame and rotatably connected with the slide which moves inside the tilting guide cavity. Alternatively, the pin may be fastened directly to the window sash frame. The connection between the pin and the slide is made by placing the part of the pin protruding from the window sash in the slide seat, where the pin is snap-locked and secured against unintended disconnection of the pin and the slide.
In another solution of connection between the tilting guide and the window sash, the roller is mounted on the pin fixed to the window sash corner; the diameter of the roller is greater than the width of the tilting guide cavity access slot. During assembly the roller is inserted into this cavity from the face of tilting guide.
The section from which the guide for flexible screen and the sliding beam is made, also has the angular cavity arranged at the side opposite to the cavity employed for guiding the ends of the sliding beam. In this angular cavity the part of the cord moves which extends between the reel inside the casing and the cord return assembly. Upon passing through the return pulley, this cord goes to the sliding beam to which its end is fastened. The entrance gap to the angular cavity is located between the tilting guide and the side cover of the screen guide and opens towards the window frame. Preferably in the cord return assembly two pulleys are provided rather than a single bigger pulley, because in such solution the ends of transverse beam can move closer to the return pulley and, therefore, shorter screen guides may be used.
The ends of cords that pull the sliding beam to cause its movement out of the casing are fixed to this beam, and the cords remain under the action of the tensioning assembly which takes up any cord slack resulting from different and varying winding diameters of the flexible screen on the shaft and cords on reels. The tensioning assembly is, in particular, arranged in the form of springs located in the sliding beam, one spring for each cord.
Beneficial effects of the invention. Use of the slidable guiding inserts for catches which are located along the edges of flexible screen and stretch this screen in the direction transverse with respect to the screen guides and the window, so usually along the shorter distance than stretching the screen longitudinally, reduces the value of screen deflection between guides and eliminates or at least reduces the risk of the screen contacting with the window glass, particularly when the window is closed. This ensures the natural convection of air between the flexible screen and the window glass and, in consequence, cooling of the window. Because the screen winding shaft and the axis of casing rotation during its tilting together with the window sash are coaxial, and also because the rewinding shaft is located at the same side where the flexible screen leaves the casing, the compact structure of the entire assembly is obtained along with unobstructed tilting movement of the roller blind with guides.
Exemplary embodiments of the invention. The tilting roller blind with guides according to the invention is presented on an example of the roller blind installed on the roof window and illustrated on the following figures, of which:

Fig. 1: depicts a roof window with a tilting roller blind with guides set joined with the window sash - in axonometric projection;
Fig. 2: depicts how the casing is fixed to the window frame (detail "A" on Fig. 1) - in axonometric projection;
Fig. 3: depicts the left-side guide of the roller blind with the edge guide for flexible screen and tilting guide with the slide - in the section made transversely with respect to these guides;
Fig. 4: depicts the slidable guiding insert and the sliding tape (detail "B" on Fig. 3) - in cross-sectional view;
Fig. 5: depicts the edge of flexible screen, with sliding tape and a set of its catching elements - in axonometric projection;
Fig. 6: depicts the left side of the casing and the guide connected with the casing - in exploded axonometric view with partial cross-section shown;
Fig. 7: depicts the casing with flexible screen and sliding beam in uppermost position - in the cross section made by vertical plane;
Fig. 8: depicts the longitudinal section through the left-side guide, at its end opposite to the casing, and through the sliding beam operating together with the guide.

Example 1. The tilting roller with guides, installed on the outer side of roof window, having the casing 1 for winding and storage of flexible screen 2, further having two guides 3 connected perpendicularly to the casing 1 and located respectively on left and right side of the window 4. The assembly of guides 3 and casing 1 may tilt, since the casing 1 is joined with the upper part of the frame 41 of the window 4 in articulating manner and the ends of guides 3 opposite the casing are connected with lower corners of the sash 42 of the window 4 which opens by rotation of the sash 42 around the hinges 43 located slightly above the half of the length of side members of window frame 41. During window opening the guides 3 and casing 1 tilt, keeping pace with the rotating movement of lower part of the window sash 42. The purpose of guides 3 is to keep the flexible screen 2 stretched across the window 4, i.e. in horizontal direction, regardless the position of the screen remaining stationary with respect to the casing 1, and also guiding the screen edges along the window 4 during winding or unwinding of the screen.
The casing 1 of the roller blind assembly is fixed to the frame 41 of the window 4 by mounting rail 11 having the form of box-shaped section and located on the upper member of window frame 41 and fastened to this frame by threaded fasteners. The casing 1 is connected with mounting rail 11 in articulated way by two (left and right) holders 12 located at respective ends of the casing. Each holder 12 consists of the base plate 12a and bearing plate 12b perpendicular to the base plate and having the bearing opening in which the casing 1 is seated in a pivoting manner. The holder 12 is fastened to the mounting rail 11 by inserting its base plate 12a under the angular rib 11a and engaging it with the flat rib of mounting rail 11. The holder 12 is protected against inadvertent detachment from the mounting rail by the screw 12c which is mounted in the holder and whose head is pressed down to the retaining rib 11c of the mounting rail. This mounting solution allows for quick and easy mounting of the casing 1 with holders 12 on the mounting rail 11 previously fastened to the window frame 41.
The casing 1 is equipped with two bodies 13, the left and the right one, located near its ends and playing a role of bearing assemblies which join the casing with guides 3. In each body 13 the cylindrical protrusion 13a is provided which is directed towards outside of the casing 1 and pivotably seated in the bearing plate 12b of the holder 12 by inserting it into the bearing opening equipped with four sliding inserts 12d made of polyamide plastic and arranged circumferentially in the bearing opening. The purpose of sliding inserts 12d is to reduce the resistance to motion of the cylindrical protrusion 13a inside the bearing opening and, in consequence, the resistance to rotational motion of the casing 1 with respect to holders 12.
The flexible screen 2 is made of fabric, particularly the fabric made of plastic guiding cavitiesfibres featuring with reduced light transmittance, and is resistant to rain and other weather factors. The screen is wound in the casing 1 on the shaft 5 arranged coaxially with bearing openings in bearing plates 12b of the holders 12 which fasten the casing 1 to the mounting rail 11. The edge of flexible screen 2 unwound from the shaft 5 in the casing and parallel to this shaft is fixed in the transverse beam 21 having the ends 22 engaged in guides 3 perpendicular to the casing 1 and connected with bodies 13 of this casing. The ends 22 of transverse beam 21 move in guides 3 during winding or unwinding of the flexible screen 2 or remain stationary with respect to the guides when the screen stays in position set by the user.
The guides 3 are arranged in the form of extruded metal sections with guiding cavities 31 facing each other and designed for taking in the ends 22 of sliding beam 21. In each guide the deeper part of guiding cavity 31 is arranged in the form of edge cavity 32 separated from guiding cavity by two ribs 33 located opposite to each other and separated with a gap. Along the entire length of edge cavity 32 in the guide 3 the slidable guiding insert 6 is provided made of polyamide material and having two angular ribs 61 located symmetrically in such arrangement that a longitudinal slot is formed between their bent arms facing each other. Through this slot the sliding tape 7, which is lap connected with the edge of flexible screen 2, goes into the slidable guiding insert. More precisely, through this slot the flat tape 71 passes which constitutes a bearing part of sliding tape. The catching elements of sliding tape 7 located inside the cavity 62 of the slidable guiding insert 6 are made in the form of continuous, oblong spatial loop structure made of plastic material. This structure is composed of small loops 72 perpendicular to the surface of tape 71 and mutually connected by longitudinal loops. Each transverse loop connects through the outer longitudinal loop 73 with the transverse loop 72 adjacent to it from the casing side, and through the inner longitudinal loop 74 with the transverse loop 72 adjacent to it on the side opposite with respect to the casing, i.e. on the side where the return assembly 34 is located at the end of the guide 3. The outer longitudinal loops 72 and the inner longitudinal loops 73 are alternately arranged on both opposite surfaces of the tape 71, being parallel and adherent to them, and are joined with the tape 71 by welding. The longitudinal loops are referred to as the inner (73) or the outer (72) ones based on their location with respect to the tape 71, i.e. from the window side or the outer side, respectively.
In the slidable guiding insert 6 the wall located opposite the longitudinal slot and playing a role of the bottom of cavity in this guiding insert contain outer arms 63 which on both sides reach beyond the angular ribs 61 of the insert. Between the outer arms 63 of this wall and the ribs 61 which separate the edge cavity 32 from guiding cavity 31 the elastic inserts 64 are located, which are made of cellular rubber material and push the slidable guiding inserts 6 in both guides 3 towards outside.
Because the outer width of transverse loops 72 of sliding tape 7 is greater than the width of the slot between angular ribs 61 of the slidable guiding insert 6, the oblong, continuous spatial loop structure may move in the cavity 62 of the guiding insert 6 only, and during unwinding of the flexible screen 2 the successive transversal loops 72 of the sliding tape 7 enter the cavity 62 from the face of slidable guiding insert 6 on the casing 1. The slidable guiding inserts 6, being pushed towards outside by elastic inserts 64, pull the sliding tapes 7 and stretch the flexible screen 2 in the direction perpendicular to the unwinding direction, i.e. horizontally across the window 4.
In the casing 1 of the roller blind, directly next to the shaft 5 which is employed for winding and unwinding of flexible screen 2 the rewinding shaft 51 is provided which directs the flexible screen 2 into the guides 3 and the sliding tapes 7 attached to the screen edges into the slidable guiding inserts 6 in these guides. Locating the rewinding shaft 51 at the side where the flexible screen 2 leaves the casing 1 allows for shaping the cylindrical surface of the opposite side 14 of the casing (see Fig. 7) in such a way that the casing 1 together with guides 3 may tilt, and the entire assembly still features with compact structure and small outline dimensions.
The rewinding shaft 1 is bearing mounted in both bodies 13 of the casing by its end necks 52 which engage in both bodies from the inner side, i.e. from the side directed to the opposite body. The necks 52 are located in sliding sleeves 53, which in turn are inserted into bodies 13 from the outer side. Also, on the inner side of each body 13 the channel 13b is provided for the purpose of entering the neck 52 of the rewinding shaft to its seating position, and each channel 13b terminates with the seat 13c for the sliding sleeve 53. The outer diameter of sleeve 53 is greater than the width of the channel 13b, therefore upon inserting the neck 52 into the seat 13c through the channel 13b and inserting the sliding sleeve 53 into the seat 13c with simultaneous sliding it over the neck 52 of rewinding shaft the shape-forced connection is obtained which allows rotational movements of rewinding shaft 51 in sliding sleeves 53 and simultaneously prevents the shaft from displacing. The sliding sleeve 53 is fixed in the body 13 by the cover 15 fastened to the body by screws and equipped with protruding part 15a which presses the flange of sliding sleeve against the retaining surface of the body. The sliding surface also has the spur 53a which is located in longitudinal groove cut in the seat for this sleeve provided in the body. This spur blocks the rotational movement of the sleeve with respect to the body, so as only the neck 52 slides in the sleeve 53.
The shaft 5 on which the flexible screen 2 is wound in the casing 1 is driven by electric motor 54 hidden inside this shaft. The face of motor 54 is fastened to the cover 15 by screws that pass through the holes 15b in the cover, and is also aligned with the cover by centring pin protruding from it and entering the seat 54a provided in the electric motor 54.
The movement of flexible screen 2 during unwinding, as well as stretching this screen along the window length is caused by the cords 8 which pass in guides 3; said cords move the transverse beam 21 away of the casing 1. One end of the cord is fastened to and wound onto the reel 81 which is located in the casing 1 and rotates together with the shaft 5 when the latter winds the flexible screen 2 in such fashion that the cords 8 and flexible screen 2 winds in opposite directions, i.e. during unwinding of the screen the cord winds on the reel and, reversely, the cord unwinds from the reel during winding the screen on the shaft. The reels 81 on both sides of casing are driven by central part of the shaft 5 through splined connecting members 55 which have the central part of reduced diameter, thus leaving a space for sliding tape 7 wound on the shaft, particularly for the loop structure of the tape which is thicker than the flexible screen 2. The other end of cord 8 is, upon passing over two return pulleys 82 mounted in the return assembly 34 located on the end of guide 3, secured in the sliding beam 21. At the distance between the reel 81 in the casing 1 and return pulleys 82 in the return assembly 34 the cord 8 runs through the angular cavity 35 in the guide 3 which has the access slot open towards the window frame 41. Between the return pulleys 82 in the return assembly 34 and the end 22 of the sliding beam 21 the cord 8 runs through the guiding cavity 31 in the guide 3. Inside the sliding beam 21 the cord 8 remains under the action of springloaded tensioning device 83 which takes up any slack of cord 8 resulting from different and varying winding diameters of the flexible screen 2 on the shaft 5 and the cords 8 on reels 81.
Apart from the cavities intended for guiding the flexible screen and its cord, each guide 3 is also equipped with tilting guide 36 located in parallel to the main section of the guide 3 of the roller blind assembly. The tilting guide 36 is arranged in the form of channel section with ends of its arms bent towards each other and defining the cavity for the slide 37 which connects the guide 3 with lower corner of the sash 42 of the roof window 4. The tilting guides 36 are so located in both guides 3 that their cavities for engaging the slides 37 are open towards each other. The tilting guide 36 connects with the main section of the guide 3 through the longitudinal, T-shaped spline 35a which is inserted to the T-slot in the main section from the face of guide 3. The sash 42 of the window 4 is connected with tilting guide 36 through the pin 44 fastened to the cover plate 45 affixed to the window sash frame 42. In this exemplary embodiment of the invention the pin 44 is made in the form of the cylindrical head screw threaded into the cover plate 45. The head of this screw is inserted into the seat in the slide 37 and secured there against inadvertent disconnection of the pin 44 and the slide 37 by snap-locking connection.
Example 2. The tilting roller blind with guides, installed on the outer side of roof window differs from the first exemplary embodiment of the invention in that that instead the slide the roller moves inside the tilting guide, and the diameter of this roller is greater than the width of access slot provided in the tilting guide cavity and open towards the opposite guide. The rollers which operate together with both guides are pivotably mounted on pins installed in the same way as in the first exemplary embodiment, in cover plates affixed to the corners of window sash. During assembly of guides the roller is inserted to the cavity in tilting guide from the face of this guide, prior to connecting the guide to the casing. Other components and parts of tilting roller blind, as well as the casing design, including the location of rewinding shaft are the same as in the first exemplary embodiment of the invention.
Example 3 which does not belong to the present invention. The tilting roller blind with guides is installed on vertical window mounted in the building wall. As in the first exemplary embodiment of the invention, the casing is fixed to the top member of the window frame. At lower ends of both guides the short tilting guides are provided which operate together with articulated connecting members pivotably mounted to the lower part of window frame and terminated with rollers placed in tilting guides. Other components and parts of tilting roller blind, including the solution for guiding of flexible screen edges and the design of casing with location of rewinding shaft are identical as in the first exemplary embodiment of the invention.

Claims

Roof window assembly comprising a roof window (4) having a frame (41) and a sash, (42) the assembly further comprising a tilting roller blind with a set of guides (3, 36), especially designed for roof windows, particularly installed outside the window (4) that opens by rotating its sash (42) around a horizontal axis located above the half of the window sash height, the tilting roller blind comprising a flexible screen (2) which is wound onto a shaft (5) designed for winding the flexible screen (2) on it and driven by a motor (54), preferably an electric motor, the flexible screen (2) being terminated with a sliding beam (21) with the ends guided by screen guides (3), the assembly further comprising a casing (1) fixed in a tilting manner, especially affixed to the top member of the window frame (41), wherein said casing (1) is designed for holding the flexible screen (2), the screen guides (3) are made of shapes with guiding cavities (31) open towards each other for guiding the ends of the sliding beam (21) and with edge cavities (32) designed for guiding the edges of the said flexible screen (2), and wherein said roller blind further comprises tilting guides (36) connected to the window sash corners located opposite the casing (1), therefore during window opening and closing the set of guides (3, 36) may tilt, preferably together with the casing (1), furthermore, slidable guiding inserts (6), preferably made of plastic, are provided in the edge cavities (32), and each of these slidable guiding inserts (6) has two angular ribs (61) arranged symmetrically in such manner that between their arms directed to each other a longitudinal slot is formed, and to the edges of flexible screen (2) catches are affixed in regular intervals, said catches have the gripping elements (72) with the width greater than the width of said slot, these gripping elements (72) move inside the slidable guiding insert (6); the narrower portions of the catches pass through the slot between angular ribs of this insert, and the ends (22) of the sliding beam (21) are pulled away from the casing (1) by cords (8) wound on reels (81) located in the casing and rewound by return pulleys (82) located on the ends of the screen guides (3) located opposite the casing (1).
Roof window assembly according to claim 1, characterized in that the edge cavity (32) is separated from the flexible screen (2) movement zone by the ribs (33) located opposite each other, the longitudinal slot is provided between these ribs and the width of this slot is slightly greater than the distance between outer surfaces of angular ribs (61) of the slidable guiding insert (6).
Roof window assembly according to claim 1 or 2, characterized in that the edge cavity (62) designed for guiding the edge of flexible screen (2) is made as the deeper part of guiding cavity (31) for sliding beam (21) and is separated from this cavity by two ribs (33) located opposite each other.
Roof window assembly according to any of claims 1 to 3, characterized in that the sets of catches operating together with slidable guiding insert have the form of sliding tapes (7) fixed to the flexible screen (2) along its both edges, and the gripping elements of each sliding tape, located on the outer edge of the tape and placed inside the slidable guiding insert, have the form of oblong, continuous spatial structure, preferably made of plastic and composed of small loops (72) arranged transversely with respect to the surface of the tape (71) and connected with each other by small longitudinal loops in such a way that each transverse loop is connected through the one longitudinal loop (73) with the transverse loop adjacent to it from the casing side and through the another longitudinal loop (74) with the transverse loop adjacent to it on the opposite side, and the longitudinal loops are arranged alternately at both opposite surfaces of the tape (71) parallel to it, and are joined with the tape (71).
Roof window assemblyaccording to any of claims 2 to 4, characterized in that the wall of slidable guiding insert (6) located opposite to the slot has the outer arms (63) which reach beyond the angular ribs (61) of this insert, and between the outer parts of this wall and the ribs (33) which separate the edge cavity (32) from the flexible screen movement zone the elastic inserts (64) are provided, preferably made of cellular rubber, which stretch the flexible screen (2) in the direction perpendicular to the screen unwinding direction.
Roof window assemblyaccording to any of claims 1 to 5, characterized in that inside the casing (1) the rewinding shaft (51) is provided which is located at this side of casing at which the flexible screen (2) leaves the casing (1) towards edge cavities (32) provided in guides (3), and the shaft (51) is bearing mounted in bodies (13) located at both ends of the casing (1) and connecting this casing with guides (3).
Roof window assembly according to claim 6, characterized in that the rewinding shaft (51) is mounted in sliding sleeves (53) inserted in bodies (13) from outer side, and that in each of these bodies the channel (13b) is provided for engaging the neck (51) of rewinding shaft (51), this channel terminates with the seat (13c) for sliding sleeve (53) and the sleeve diameter is greater than the channel width.
Roof window assembly according to any of claims 1 to 7, characterized in that the tilting guides (36) have the cavities in which the elements that connects these guides with lower corners of the window move, and that as the connecting element the pin (44) is used, preferably fastened to the cover plate (45) which is affixed to the widow sash frame (52), the pin (44) is in pivoting manner connected with the slide (37) that move inside the cavity in the tilting guide (36), and the pin (44) is located in the seat provided in the slide (37) and blocked in it by snap-locking connection.
Roof window assembly according to any of claims 1 to 8, characterized in that the section from which the guide (3) is made has the angular cavity (35) arranged on the side opposite with respect to the guiding cavity (31), and inside this angular cavity the part of cord (8) moves which extends between the reel (81) located inside the casing (1) and the return assembly (34), this return assembly preferably contains two return pulleys (82), and the access slot of the angular cavity (35) opens towards the window frame.
Roof window assembly according to claim 9, characterized in that the cords (8) which cause the sliding beam to move away of the casing (1) remain under the action of the tensioning assembly (83,) particularly made in the form of springs located in the sliding beam.