ES2885099T3 - Roller blinds with side guides - Google Patents

Abstract

Screen device comprising a screen roller (3) and a screen (2) that can be rolled and unrolled from this screen roller and joined on one of its sides to the screen roller, wherein the screen device comprises a frame with at least a protective casing (7) and two side guides, where the side guides each comprise a first profile (6) and a first additional profile (8), characterized in that the side guides each comprise a second additional profile (9), the first profile (6) has an open state when the two additional profiles (8, 9) are released from the first profile (6), and a closed state when the two additional profiles (8, 9) are connected to the first profile (6), where the side guides show, in the open state, an open space under the protective casing (7) for mounting and disassembling the screen roller (3) in the protective casing (7) passing the screen roller (3) along the open space, and where the side guides show, in the closed state, a groove for holding the side edges of the screen (2) when the screen is rolled and unrolled.

Description

DESCRIPTION

Roller blinds with side guides

The invention relates to a screen device comprising a screen roller and a screen that can be rolled up and unrolled on this screen roller and attached at one of its sides to the screen roller, the screen device further comprising a frame with a protective casing and two or more lateral guides.

Such screen devices are known and are typically placed on windows or doors such as blinds or roller shutters. The protective housing of the display device can be recessed or surface mounted. In the case of flush-mounted and surface-mounted protective enclosures, access to the enclosure must remain available to allow for repairs and maintenance of display device components. For roller blinds an opening is typically provided in the inner wall, through which the interior of the protective casing can be accessed. Normally, for sun shades there is an opening in the outer wall, through which the inside of the protective casing can be accessed.

Two trends make the application of the aforementioned known openings in a built-in protective housing difficult in modern home construction. On the one hand, it is a trend to hide as many building elements as possible from view. This trend has its origin in the so-called 'minimalist' architecture, which is characterized by large continuous surfaces both outside and inside a home. On the other hand, it is a trend to make the walls thicker for energy related reasons. A thicker wall can hold more insulation, so heat loss through the wall can be minimized.

Document DE202004005166U discloses a support for blinds and shutters in buildings with a solid lateral guide profile. Document DE2057595 discloses a roller shutter with a protective casing and side guides. It is an object of the present invention to provide a display device that can be integrated and whose protective casing is easily accessible.

The invention provides for this purpose a display device according to claim 1.

By providing two rails, each of the rails can be optimized to guide the respective object. In this way, the second rail can be optimized to guide the screen and the first rail can be optimized to guide the screen. When two rails are provided, properties such as width (intermediate distance between opposing rails), depth (corresponding to the thickness of the guide elements), and other properties can be selected per rail and thus optimized.

Since the two rails are made of separate profiles, they can also be designed and dimensioned individually. The first profile is formed and designed here to incorporate the first rail and the two additional profiles are formed to incorporate the second rail. The two additional profiles can be connected to the first profile and thus together they form the second rail. As a result, the two additional profiles can also be released from the first profile, leaving the first rail free over the entire length of the profile. The second rail is formed by connecting the two additional profiles to the first profile. As a result of the placement of the two additional profiles, the first rail will typically be filled with the two additional profiles, so the first rail is no longer operational when the two additional profiles are connected to the first profile. However, the connection of the two additional profiles to the first profile to form the second rail is normally done when the screen roller is placed in the protective housing and when the screen roller has been placed in place through the first rail. In this phase of the assembly of the screen device, the first rail has fulfilled its function, and the rendering of this rail unusable by the placement of these two additional profiles does not constitute any limitation for the operation of the screen device. The second rail can then be formed to guide the lateral sides of the screen during winding and unwinding of the screen. Here it is advantageous if the second rail is formed by two other profiles. During mounting or reassembly of the screen device in a window opening or other opening, a first profile of the two additional profiles may first be placed, after which the screen is positioned correctly with respect to the first profile, after which the second profile can be placed in such a way as to form the second rail. If only one additional profile was used to form the second rail, this additional profile would have to be positioned correctly and simultaneously with the lateral sides of the screen during placement or replacement of the screen device. This causes practical problems which are solved by forming the second rail from two additional profiles.

Said first profile preferably comprises a rear wall and two side walls so as to form an elongated channel comprising said first rail and which is also designed to at least partially receive said two additional profiles.

By manufacturing a first profile with a rear wall and two side walls, an elongated channel is formed which has a cavity in which more profiles can be received. By receiving the additional profiles in the channel formed in the first profile, these additional profiles are hidden from view when the first profile is built into a wall. When received in the first profile, the additional profiles also form a closure for the elongated channel formed by the first profile.

The side walls preferably have inwardly directed end flanges.

Providing the side walls of the first profile with inwardly directed end flanges simplifies the construction of the first profile. Such profiles are normally mounted flush in the plane of a wall (frame wall) and secured using sealing agents such as adhesives. Providing the side walls with end flanges creates an area to which the adhesive or sealing material can adhere without affecting the opening formed by the first profile. If no end flanges were provided and the two additional profiles were mounted on the first profile, these two additional profiles could be fixedly attached to the first profile by the sealing agent if the sealing agent extended slightly beyond the edge of the first profile. This would make it difficult to mount or dismount the display device. Providing a tab avoids such drawbacks.

Preferably, the first rail is integrally formed by the first profile.

Because the first rail is integrally formed by the first profile, the width of the rail is substantially determined by the width of the profile. In this way, the rail is approximately the same width as the profile, and thus the widest possible first rail is obtained. Since the width of the first profile determines the overall width of the display device, obtaining a wide first rail relative to the profile has the result that the display device can be given a slim shape. Thus, because the first rail is integrally formed by the first profile, no additional width is provided therein that is not absolutely essential to the operation of the display device. As a result, a narrow screen device can be obtained.

The second rail is preferably formed as an elongated chamber, the walls of which are formed on a first side by a first profile of the two additional profiles and on a second side by a second profile of the two additional profiles.

Since the walls are formed on a first side by a first profile of the two additional profiles and the walls of the second side are formed by a second profile of the two additional profiles, the chamber can be opened by separating the two profiles. Such an arrangement simplifies mounting and dismounting of the display device. In particular, the correct mounting and positioning of the lateral sides of the screen on the second rail is greatly simplified because the chamber that forms the second rail can be opened by separating the two profiles. Preferably, the first of the two additional profiles extends integrally on one side of the screen plane.

Mounting and dismounting of the screen device is simplified because one of the two additional profiles extends integrally on one side of the screen plane.

The first profile preferably extends into the interior of the protective casing.

Since the first profile extends into the protective shell, the first rail also continues inside this protective shell. In this way, the screen roller can be guided into the protective casing, where the screen roller can be placed in its operating position. The first profile can also form the side wall of the protective casing, which simplifies the technical assembly of the protective casing.

The two additional profiles preferably extend at least as far as the underside of the protective casing. Since the two additional profiles extend at least to the bottom of the protective casing, the first profile is terminated and filled to the full height up to the protective casing. The two additional profiles preferably extend no more than partially into the protective casing, so that these two profiles can be released and removed from the first profile without the protective casing having to be completely disassembled. This makes disassembly of the display device easy after it is placed. In this way, the components can be removed from the protective casing after being placed and replaced.

The screen roller is preferably retained by at least one guide member compatible with the first rail such that the guide member is movable along the guide, and wherein a mounting fixture is provided to secure the guide member relative to the guide member. to the guide in a predetermined operating position of the screen device, where the screen roller extends into the protective casing.

Because the screen roller is located on a guide member that can move along the first rail of the guides, the screen roller can be moved in and out of the protective casing by moving the guide member along the guides. . Therefore, it is not necessary to provide an opening on the front or rear side of the protective casing, since the screen roller can be removed through the same opening through which it can exit. the screen. This opening is typically positioned so that it is hidden from view. This is in contrast to openings in the outer wall or inner wall, which are normally always visible. Any wall thickness will also be suitable for the incorporation of such a screen device, since it is not necessary to provide an additional opening to an interior or exterior wall. The mounting accessory allows a positioning of the screen roller in the protective housing by retaining the guide element in a predetermined position. The default position here is the position where the screen roller extends into the protective casing. This is possible because the guide extends at least partially inside the protective casing.

The lateral guide preferably extends in a longitudinal direction and the at least one guide element is intended to move in a longitudinal direction along the guides. In this way, the screen roller can be taken out directly from the protective casing by a movement in the longitudinal direction. As a result, the protective casing can be made with a minimum depth, since the screen roller does not require more space to move and can directly come out of the protective casing by longitudinal movement. This is in contrast to casing-mounted screen rollers of other shapes, where transverse movement of the screen roller is often necessary to allow the screen roller to move out of the casing.

Preferably, the mounting fixture forms a stop for the at least one guide element so that the latter is blocked in at least one direction in a movement along the guides. Placing a stop can be done in a technically simple way. The stop will also prevent a movement in the longitudinal direction out of the protective casing, whereby the stop is mounted in the position where the screen roller can come out of the protective casing. This location is usually accessible enough to allow easy mounting of the mounting accessory.

The guides preferably extend at least partially into the protective shell in that the first profile extends at least halfway into the protective shell such that at least half of at least one side wall of the protective shell is formed by the first profile . The guide elements can be guided through the first rail into the protective casing when the profile forming the first rail extends into the casing. The guide elements can be moved to at least half of the protective casing when half of the side wall of the casing is formed by the first profile.

Preferably, at least one side wall of the protective casing is formed substantially entirely by the first profile. This simplifies the construction of the casing as the side wall substantially comprises one element. This furthermore enables guiding of the guide elements, and thus also of the screen roller, deep into the protective casing.

Preferably, said mounting fixture is mountable by movement transverse to the longitudinal direction, whereby the mounting fixture slides in a groove in the guide. A slot provided in the guide can be realized in a technically simple manner. A stop for the guide elements can be obtained by sliding a plate-shaped guide into this slot. A mounting by sliding into a groove transversely to the longitudinal direction can be carried out easily and quickly. The mounting/dismounting of the screen roller in the protective housing can thus be carried out very easily and in a short time.

Preferably, an auxiliary profile is provided on the second rail in order to guide the lateral side of the screen, where the mounting accessory comprises an additional stop for the auxiliary profile so that the auxiliary profile hits against the mounting accessory when the screen rolls up. The mounting accessory here acquires an additional function in addition to positioning the guide element, that is, defining the highest position of the auxiliary profile. The mounting fixture is typically located at the bottom of the screen roller to prevent downward sliding of the guide members. The mounting accessory can then simultaneously comprise a stop for the auxiliary profile so that the auxiliary profile hits against the mounting accessory when the screen is rolled up. When the screen is rolled up, the screen pulls the auxiliary profile up with it (due to the frictional force between the screen and the auxiliary profile). Without a stop, the auxiliary profile would drag up to the screen roller and lock the screen device.

The mounting fixture is preferably provided for fixing a lower cover plate of the protective casing against it. In this way, the mounting accessory has an additional function in addition to retaining the guide elements and (optionally) the stop for the lower batten. The bottom of the protective casing can be closed through the cover plate so that the screen can still move through the remaining opening but the screen roller can no longer pass through it. In this way, the housing is protected from dirt and vermin.

The mounting fixture preferably has a projection which extends in the longitudinal direction and is provided for fixing the cover plate against it. By providing a protrusion, the cover plate can be easily fixed against and at a distance (protrusion length) from the mounting fixture.

The mounting accessory is preferably placed in the protective casing. The mounting fixture can retain the guide elements in the protective casing. Other functions, such as bottom rail stop and cover plate fixing, can also be fulfilled by the mounting accessory when placed in the protective casing. The mounting accessory is further hidden from view when placed in the protective case. The mounting fixture is preferably symmetrically formed. Forming the mounting fixture symmetrically, preferably symmetrically in line, allows it to be used on two opposite sides of the protective housing. The symmetrical shape allows free exchange between opposite sides.

The screen roller is preferably held on each side in guides through a guide member and two mounting fixtures are provided for securing the guide members on each side of the screen roller with respect to the guides. Guide elements and rails on both sides allow easy mounting and dismounting of the screen roller in the protective housing.

The invention will now be described in more detail on the basis of an exemplary embodiment shown in the drawing. In the drawings:

Figure 1 is an exploded view of a display device according to an exemplary embodiment of the invention; Figure 2 shows a cross section of a protective casing and a side guide of the display device according to an exemplary embodiment of the invention;

Figure 3 shows a screen device integrated in a house;

Figure 4 shows a cross section of a lateral guide according to an embodiment of the invention;

Figure 5 shows a cross section of the first profile, the guide element and the screen roller;

Figure 6 shows a cross section of the first profile connected to the two additional profiles;

Figure 7 shows a cross section of the first profile in the position of the mounting fixture; and Figure 8 is a front view showing mounting and/or dismounting of the display device.

The same or similar elements are designated in the drawing with the same reference numerals.

Figure 1 is an exploded view of a screen device according to the invention. Figure shows some (but not all) elements of the display device. The Figure shows a screen roller assembly 1 comprising a screen 2 wound on a screen roller shaft 3. The screen is here attached on one of its sides to the shaft 3. The screen roller is normally retained by a guide element 4. The guide member 4 has an opening 5 in which the screen roller shaft 31 can be rotatably mounted. The guide element 4 has a shape compatible with that of the first profile 6 so that it can be held firmly in this first profile. The first profile 6 forms a rail where the guide element 4 can slide in (only) the longitudinal direction of the profile. The first profile 6 is preferably formed by two parts, an upper part that is attached to the protective casing 7 and a lower part that extends below the protective casing. This allows the protective case to be delivered fully assembled to a construction site where the display device is placed. If the first profile were made in one piece, this profile would protrude at right angles to the protective casing, which would make transportation very difficult. The two parts from which the first profile 6 is formed are provided with fixing means (not shown) so that the parts can be fixed to each other to thus obtain a continuous profile. The screen device furthermore comprises two further profiles 8 and 9 which can be joined to the first profile 6 and which together form a second rail 10. The other two profiles 8 and 9 extend at least as far as the underside of the protective casing and are preferably extend towards the protective casing. The profiles preferably do not extend beyond the mounting fixture (described in more detail below). The second rail 10 is provided for the purpose of guiding the lateral sides of the screen 2 when the screen is rolled up or unrolled. The Figure further shows a cover plate for covering the upper side of the first profile so that the protective casing is closed.

Figure 2 shows a schematic cross-sectional view of the display device. The components of the display device are shown here separately for the sake of clarity, so that the different components can be made clearly visible. However, in practice, the components will often find themselves up against each other. The Figure shows a protective casing 7, the side wall of which is entirely formed by the first profile 6. In this first profile a first rail is formed on which the guide element 4 can slide. The Figure shows how the guide element 4 has substantially the same same width as the first profile 6 and therefore can only move in the longitudinal direction of the first rail. The guide element is alternately formed to be positioned between projections on the first profile. Said guide element is narrower than the width of the profile. The advantage of this would be that the guide element can be placed deeper in the first profile, whereby the screen roller can also be wider and can partially extend in the first profile. In this way, the side ends of the screen extend into the first profile so that they can also be held in the second rail here.

The screen roller is mounted on the guide element 4 with the screen roller shaft 3, to which the screen 2 is fixed. The guide element 4 is held in a predetermined position in the protective casing 7 by means of the fixture mounting bracket 12. This mounting fixture 12 is fixedly fixed with respect to the first profile 6 and forms a lock for the guide element 4 so that the guide element 4 is prevented from sliding downwards. The mounting fixture 12 also serves as a stop for a lower slat 11. The lower slat 11 is attached to the screen 2 on the opposite side to the side with which the screen is attached to the screen roller shaft 3. The protective casing 7 it is preferably formed so that the lower slat can be pulled up into the protective casing. The bottom of the lower slat (when in the highest position) is here preferably substantially parallel to the bottom of the protective casing 7. The mounting fixture 12 preferably comprises a projection 13 which extends at right angles to the fixture. preferably from a central point on the mounting fixture to a position near the bottom of the protective housing (in the assembled position). Here a cover plate 14 can be fixed against the projection 13 of the mounting fixture 12. The cover plate preferably extends from a lower edge of the protective casing 7 (in the figure, the lower edge on the right side of the casing ). The cover plate 14 is preferably provided with a protrusion provided in order to fit into a groove in the casing so that the plate can be attached on one side to the casing through the groove and protrusion connection. On the other hand, the plate can be attached to the casing here using the protrusion of the mounting fixture through fixing means such as screws or bolts. The mounting accessory furthermore forms a stop for an auxiliary profile (not shown in Figure 2) placed on the second rail to retain the lateral side of the screen. When the screen is rolled up, this auxiliary profile is dragged (by friction) with the screen. The mounting accessory prevents the auxiliary profile from dragging onto the screen roller.

The description above makes it clear that the mounting accessory 12 has three main functions, i.e. to position the guide element and therefore the screen roller, functioning as a stop for the bottom slat of the screen in the highest position and for the auxiliary profile, and functioning as an accessory for mounting the lower cover plate 14. The figure also shows how the first profile 6 extends further under the protective casing 7. In this case, the first profile 6 that forms the side wall of the protective cover and the first downwardly extending first profile 6 can be integrally formed (not shown) or connected to form a whole. Two other profiles 8 and 9 are received in the first profile. The two additional profiles 8 and 9 extend to the bottom of the protective casing 7. The two additional profiles 8 and 9 together form the second rail 10 which is intended to guide screen 2 during winding and unwinding.

Alternatively, the bottom slat can be formed so that it can pass over the mounting fixture and be pulled up to the screen roller. The mounting accessory in this case does not form a stop for the lower batten.

Figure 3 shows a screen device which is incorporated into a dwelling as a screen for a window 15. Figure shows an outer wall 16 in which a window 15 is placed. The window has a window frame 17. The screen device it is placed substantially flush, preferably fully flush, between the window frame 17 and the outer wall 16. Thus, the protective housing 7 of the display device does not have an outward opening through the outer wall. There is also no opening through the interior wall, since the screen device is mounted on the exterior side of the window.

Figure 3 shows the screen 2 with the lower batten 11. The Figure shows how the lower cover plate 14 is located at the height of the outer wall in the position of the upper side of the window. The front side of the protective casing is thus completely hidden from view by the outer wall cladding 16. In this way, the protective casing is only accessible through its lower part. The Figure also shows how the side guides of the screen device, which are formed by profiles 6, 8 and 9, are also aligned with the window frame, so that the front side of the side guides is hidden from view. seen through the outer wall cladding 16. The figure shows how the two additional profiles 8 and 9 together form the second rail 10 on which the screen 2 is guided.

Figure 4 shows a cross section of a specific example of a first profile 6. Profile 6 has a rear wall and two vertical side walls. The two vertical side walls are provided with an inwardly directed flange 20. This flange 20 ensures that, when the first profile 6 is incorporated into a wall and, for example, is adhered in a fixed way to seal the opening between the wall and the first profile, the sealing adhesive that is typically used does not affect the side open of the first profile. This adhesive is usually not only applied against the outside of the sidewall (which would be ideal), but also applied to a portion of the front wall. The inwardly directed flanges 20 make this possible without the further mounting of elements on the profile 6 being hindered (due to the entry of adhesive into the opening).

Figure 4 also shows how the first profile 6 is formed completely symmetrically, so that it can be used on both sides of the protective casing as a lateral guide. The Figure shows the two additional profiles 8 and 9. These two additional profiles 8 and 9 are shaped to be received in the first profile 6. The first profile and the two additional profiles comprise complementary grooves and projections for this purpose. A first of two other profiles 8 therefore has a projection complementary to the flange 20 to hook behind the flange 20 when the additional profile is placed on the first profile to prevent a movement of this additional profile 8 out of the first profile 6 in the tab position. The second of the other profiles 9 preferably comprises a projection compatible with a slot at the position of the flange 20 of the first profile in order to thus position the additional profile correctly with respect to the first profile. The additional profile 9 preferably further comprises a projection or slot compatible with a projection or slot in the first profile of the two additional profiles 8 so that the second profile of the two additional profiles can be correctly positioned with respect to the first profile of the two additional profiles. A further advantage of providing a protrusion on the second of the two additional profiles 9 and a complementary groove on the first of the two additional profiles is that, when the second of the two additional profiles 9 is fixed by fixing means to the first profile 6, this also automatically secures the first of the other two profiles 8 with respect to the first profile.

The second of the additional profiles 9 preferably comprises fixing means complementary to the fixing means on the first profile 6 so that the second profile 9 can be attached to the first profile 6. An example is shown here in Figure 4 providing a bolt in the additional profile 9, which bolt is provided for the purpose of engaging in a nut provided in the first profile 6. Therefore, more profile 9 can be attached to the first profile.

Figure 4 further shows the screen 2 provided on the lateral side of one end 18 of the side screen. In practice, a slide fastener element is often provided as the side end of the screen. This lateral side 18 of the screen typically slides into an auxiliary profile 19. This auxiliary profile 19 is preferably a plastic profile that extends into the second rail 10 formed by the other two profiles 8 and 9. The plastic auxiliary profile 19 has here a length that is preferably greater than the length of the two additional profiles 8 and 9, so that the plastic auxiliary profile 19 extends at least partially into the protective casing (the two additional profiles 8 and 9 do not necessarily extend into of the protective casing, but at least to a position against the bottom of the protective casing). The reason for this is that the plastic auxiliary profile can guide the screen to its highest point, this being the point where the bottom of the lower screen strip is parallel to the bottom of the protective case, where the lateral sides Therefore, the screen has been uploaded to the protective casing. The auxiliary profile is intended to hit the mounting fixture so that it does not rise up to the screen roller during screen winding.

The bolt-nut connection as shown in Figure 4 could be formed in such a way that the nut has an elongated shape such that the long outside dimension is greater than the width of the channel in which the nut is placed (so that the nut is not can rotate in this channel), while the short outer dimension of the nut is smaller than the channel access opening (so that the nut can be placed in the channel through the access opening). Such an arrangement allows a nut to be positioned and secured in an elongated channel. The bolt provided in the additional profile 9 preferably has a head that is flat and the upper side of which is parallel to the outer surface of the additional profile 9. In this way, the bolt is inserted into an additional profile 9.

Figure 5 shows a cross section of the first profile 6 in the position of the screen roller. The Figure shows how a guide element 4 is placed on a first rail formed by the first profile 6. This guide element is intended to allow movement along the first profile in the longitudinal direction of this profile. This guide element 4 is held by the first rail in such a way that it cannot move in directions other than the longitudinal direction of the profile. The guide element 4 has an opening in which the shaft of the screen roller 3 is held. Although the Figure shows an exemplary embodiment where the shaft protrudes completely through the guide element, it will be clear that guide elements with an opening blind, in which the shaft is only partially inserted into the guide element, are also suitable for application in the invention. The screen 2 is wound on the axis of the screen roller 3. The screen can be rolled up and unrolled by the screen roller.

The opening provided in the guide element 4 preferably has an oval shape such that the largest outer dimension of the oval is in line with the longitudinal direction of the first profile. Such an oval opening gives the axis of the screen roller 3 the freedom to incline with respect to the guide element. When a screen roller is removed from the protective housing, and one side of the screen roller would ride more in the side guide than the other side of the screen roller (as shown in Figure 8), the screen roller is placed on a slope. Inclined lying is here interpreted as lying at an angle that differs from the angle formed by the screen roller with respect to the guide member in its operating position. By providing an oval opening in the guide element, the screen roller can become tilted in the guide element without appreciable torsional forces being produced. Being positioned on a slope with respect to its ideal operating position, the screen roller can thus be pulled out from between the guides and thus removed. The oval opening thus facilitates the disassembly of the screen roller by moving the guide element on the first rail. This is further illustrated in Figure 8, where a screen roller 3 is shown between two guide elements 4 in an operating position 26. This screen roller can be pushed downwards by moving the guide elements on the first rail to an operating position. mounting and/or dismounting 27, in which the screen roller is positioned at an angle relative to its ideal operating position. In this way, the screen roller can be removed from the screen device as illustrated in Figure 8.

Figure 6 shows a cross section of the first profile 6 connected to two other profiles 8, 9. Figure 6 shows how the two additional profiles 8, 9 are received in their entirety in the first profile 6. The two additional profiles 8, 9 together they form a second rail 10 which forms an elongated chamber 21. The chamber 21 has an opening through which the screen can pass. One side edge of the screen can be retained via this opening. The fastening of the lateral end of the screen is typically carried out through an auxiliary profile 19. This auxiliary profile 19 extends into the chamber 21 and has dimensions that prevent the auxiliary profile 19 from being removed from the chamber 21 through the opening of the screen 2. The lateral end of the screen 18 is held in the auxiliary profile 19, which in turn is held in the second rail formed by the two additional profiles 8 and 9. The auxiliary profile 19 is here preferably formed so that the forces exerted on the screen (such as wind) can be absorbed by the auxiliary profile 19. The auxiliary profile normally works as a spring element, on which the screen 2 is pressed.

The chamber 21 that forms the second rail has a first side that is formed by the first profile of the two additional profiles 8 (the right and lower side of the chamber in Figure 6), and has a second side that is formed by the second of the other profiles 9 (the left side of the camera in Figure 6).

The disassembly of the side guides of the screen device takes place in the following steps: the second profile of the two additional profiles 9 is first removed by releasing the fixing elements and removing the profile 9 from the first profile 6. The left side of the camera 21 is thus removed and the auxiliary profile 19 can be removed from the second rail. Finally, the first of the other two profiles 8 can be removed to make the first rail fully accessible so that the guide element 4 can move along the first profile. The two additional profiles are usually only removed once the screen has been fully raised. In this raised position, the lower slat extends into the protective casing 7 and therefore this lower slat does not prevent the other two profiles 8 and 9, which extend only up to the protective casing, from being removed from the first profile 6 However, as mentioned above, the auxiliary profile 19 extends inside the protective casing. The auxiliary profile 19 preferably has an angular finish on its upper side so that a first part extends beyond the mounting accessory to hold and guide the lateral side of the screen here, while a second part hits against the mounting accessory and thus prevents further upward movement of the auxiliary profile.

During the reassembly of the side guides of the display device, the first of the two additional profiles 8 will first be placed on the first profile 6. Next, the auxiliary profile 19 is placed. This auxiliary profile extends into the interior of the casing and, because the second profile of the two additional profiles 9 has not yet been placed, it can be correctly placed there without much difficulty. The lateral side 18 of the screen will be placed more specifically on the additional auxiliary profile 19, after which the auxiliary profile will be correctly positioned with respect to the first of the two additional profiles. The second profile of the two additional profiles 19 is subsequently placed and fixed, thus fixing the first profile of the two additional profiles 8 and the auxiliary profile 19.

Figure 7 shows a cross section of the first rail in the position of the mounting fixture 12. The Figure shows how in cross section the mounting fixture 12 partially overlaps the first profile when in the mounting position. A slot 22 is provided in the first profile at the position of this overlap. In this way, the mounting fixture 12 can be inserted into the slot by a movement transverse to the longitudinal direction of the first rail (in the direction indicated by the arrow 23). Because the mounting fixture is brought into the groove of the first profile 6 with a movement 23, the mounting fixture forms a blocking of the movements in the longitudinal direction of the first rail. The guide element 4, which can move on the first rail, will thus collide with the area 24 of the mounting fixture. The mounting fixture 12 prevents a movement of the guide element 4 beyond a predetermined position. The mounting fixture 12 further forms a stop for the auxiliary screen profile 2 through the area 25. A projection 13 is further provided on the mounting fixture 12 against which the lower cover plate of the housing can be mounted. protective. The mounting fixture adopts a symmetrical in-line shape so that it can be used as a mounting fixture on the two opposite side rails.

Figure 8 shows the screen roller 3 in an operating position 26 in the protective casing 7. The screen roller is mounted on both sides here on guide elements 4. These guide elements 4 are held in place by mounting hardware. (not shown in Figure 8) that prevent the guide elements 4 from sliding downwards. Removing these mounting hardware 12 (during disassembly of the screen device) and removing the two additional profiles from the first profile allows the guide elements 4 to move down along the first rail so that the screen roller is removable from the display device (as shown at position 27 in Figure 8).

With reference to Figure 2, the steps for the disassembly and assembly of the elements of the display device are described below. To remove the display device, the side guides are removed according to the steps described above. The lower cover plate 14 is also removed from the protective casing 7. The mounting fixture 12 can then be removed, whereby the guide element 4 can run along the first profile 6 (the first rail is left free when removing the additional profiles and when removing the mounting accessory) to remove the screen roller (and optionally also other elements of the screen device) from the protective casing 7.

To remount the screen device, the screen roller slides through guide elements 4 to its operating position 26, after which the mounting fixture 12 is placed in the groove of the first profile. The mounting fixture 12 thus prevents the guide elements 4 from sliding downwards. The other two profiles 8, 9 (see above for steps to mount the side guides) and the bottom cover plate 14 can be remounted. Such a method of mounting and demounting the screen device has the advantage that the total depth of the screen device does not have to be much greater than the thickness of the screen roller. This is because the screen roller can be removed from the screen device only by movements in the longitudinal direction of the side screen guides.

The exemplary embodiments described above serve solely for the purpose of illustrating the invention and are not intended to limit the scope of protection, as defined in the appended claims.

Claims (14)

1. Screen device comprising a screen roller (3) and a screen (2) that can be rolled up and unrolled from this screen roller and attached at one of its sides to the screen roller, where the screen device comprises a frame with at least one protective casing (7) and two side guides, where the side guides each comprise a first profile (6) and a first additional profile (8), characterized in that the side guides each comprise a second additional profile (9), the first profile (6) has an open state when the two additional profiles (8, 9) are released from the first profile (6), and a closed state when the two additional profiles (8, 9) are released. connected to the first profile (6), where the side guides show, in the open state, an open space below the protective casing (7) for mounting and dismounting the screen roller (3) in the protective casing (7) passing the screen roller (3) along the open space or, and where the side guides show, in the closed state, a groove for holding the side edges of the screen (2) when the screen is rolled up and unrolled. 2. Screen device according to claim 1, wherein said first profile (6) comprises a rear wall and two side walls. Screen device according to claim 2, wherein said first profile (6) forms an elongated channel defining the open space, the elongated channel is provided to at least partially receive said two additional profiles (8, 9). Screen device according to claim 2 or 3, wherein the side walls have inwardly directed end flanges. 5. Screen device according to any of the preceding claims, wherein the slot is formed as an elongated chamber (21), whose walls are formed on a first side by a first profile of the two additional profiles (8, 9) and on a second side by a second profile of the two additional profiles (8, 9). Screen device according to claim 5, wherein the first profile of the two additional profiles (8, 9) extends integrally on one side of the screen plane. 7. Screen device according to claims 2 to 6, wherein the first profile (6) extends into the interior of the protective casing (7). Screen device according to claims 2 to 7, in which the two additional profiles (8, 9) extend at least as far as the underside of the protective casing (7). Screen device according to any of the preceding claims, wherein the screen roller (3) is held by at least one guide element (4) compatible with the guide such that the guide element can move along the guide, and wherein a mounting fixture (12) is provided to secure the guide element relative to the guide in a predetermined operating position of the screen device, wherein the screen roller extends into the protective casing. Screen device according to claim 9, in which the guides extend in a longitudinal direction and in which the at least one guide element (4) is intended to move in a longitudinal direction along the guides. 11. Screen device according to claim 10, wherein the mounting accessory (12) forms a stop for the at least one guide element (4) so that the latter is blocked in at least one direction in a movement along of the guides. 12. Screen device according to any of the preceding claims, wherein the first profile (6) extends to at least half of the protective casing (7) such that at least half of at least one side wall of the casing protector is formed by the first profile. 13. Screen device according to any of the preceding claims and claim 9, wherein said mounting accessory (12) can be mounted by a movement transverse to the longitudinal direction, whereby the mounting accessory slides in a slot of The Guide. 14. Screen device according to any of the preceding claims and claim 9, wherein an auxiliary profile (19) is provided in the slot in order to guide the lateral side of the screen (2), where the mounting accessory (12) comprises an additional stop for the auxiliary profile so that the auxiliary profile hits against the mounting accessory when the screen is rolled up.