EP4077863A1

EP4077863A1 - Method for mounting a roller screen, particularly an insect net, and such roller screen

Info

Publication number: EP4077863A1
Application number: EP20828650.0A
Authority: EP
Inventors: Carsten Thomsen; Casper Grønvig Nielsen
Original assignee: VKR Holding AS
Current assignee: VKR Holding AS
Priority date: 2019-12-20
Filing date: 2020-12-17
Publication date: 2022-10-26
Anticipated expiration: 2040-12-17
Also published as: EP4077863C0; CN114829733A; EP4077863B1; HUE064527T2; PL4077863T3; CN114829733B; WO2021121513A1

Abstract

A method for mounting a roller screen (1) for shielding a building aperture (3) in an inclined wall, which roller screen comprises a top casing (4), a bottom element (5), first and second side rails (6, 7), a mounting bracket (16) and a screen (10), the method comprising the steps of assembling a rectangular frame comprising the top casing (4), the bottom element (5) and the first and second side rails (6, 7), mounting the mounting bracket (16) on an inclined wall (35) of a building adjacent to a top wall (33) of the building aperture (3), bringing the rectangular frame into engagement with the mounting bracket (16) in such a way that the rectangular frame is carried by the mounting bracket to hang free, extending substantially vertically from the mounting bracket, and bringing the rectangular frame into abutment with the inclined wall (35) along all of the periphery of the building aperture (3).

Description

Title of Invention

Method for mounting a roller screen, particularly an insect net, and such roller screen. Technical Field

The present invention relates to a method for mounting a roller screen, in particular in the form of an insect net or the like, for shielding a building aperture, in particular a roof window area, in an inclined wall, which roller screen comprises: a top casing comprising a rear surface adapted for abutting the inclined wall in a mounted condition of the roller screen, a front surface (adapted for facing away from the inclined wall in a mounted condition of the roller screen, and an upper surface adapted for connecting the rear surface and the front surface, a bottom element, first and second side rails, a mounting bracket comprising a first leg adapted for abutment against the inclined wall, a second leg extending at angle to the first leg, and a third leg extending from the second leg either in the same direction as the first leg to form a substantially U-shaped configuration, or in an opposite direction to the first leg to form a stylized inverted S configuration, and a screening body. The present invention further relates to such a roller screen.

Background Art

When mounting a roller screen of the above mentioned type on an inclined wall, holding the roller screen towards the inclined wall at the building aperture and fixing the roller screen to the inclined wall must be performed at the same time. The process of holding the roller screen towards the inclined wall at the building aperture and fixing the roller screen to the inclined wall is therefore often cumbersome and implies risks such as dropping of tools or fastening elements or even the roller screen and incorrect positioning of the roller screen on the inclined wall. Especially in case of roller screens in the form of insect nets, correct positioning is important to ensure that the roller screen effectively seals off the building aperture such as to avoid the risk of insects, such as mosquitos, entering through small gaps or openings unintentionally left behind.

In the prior art, various devices have been suggested in an attempt of alleviating the above problem. For instance, it is known to provide a mounting bracket with a female part and a screw lock and to provide a complementary male part on the top casing of a roller screen. As another example, a clip for a detachable component is given in EP 1816513 A1.

However, the prior art roller screens have the drawback of being excessively cumbersome and time consuming to mount. Furthermore, the prior art methods pose a significant risk of improper adjustment of the roller screen with respect to the building aperture which it is intended to cover, e.g. especially as no adjustment is possible once the male and female parts are brought into engagement.

Thus, there is a desire to propose an improved method of the type mentioned by way of introduction, with which the above drawbacks are more fully alleviated.

Summary of Invention

It is therefore the object of the invention to provide an improved method for mounting a roller screen for shielding a building aperture, such as a roof window area, in an inclined wall, with which the mounting procedure is simplified, and with which adjustment of the roller screen with respect to the inclined wall is possible even after having brought the roller screen and the inclined wall into abutment.

In a first aspect of the invention the above and other objects are achieved by means of a method of the type mentioned by way of introduction and comprising the steps of: a) assembling a rectangular frame comprising the top casing, the bottom element and the first and second side rails such that the top casing and the bottom element extend substantially in parallel to each other, and that the first and second side rail extend substantially in parallel to each other and connecting the top casing and the bottom element, b) mounting the mounting bracket on an inclined wall of a building adjacent to a top inclined wall of the building aperture, c) bringing the top casing of the rectangular frame into engagement with the mounting bracket in such a way that the rectangular frame is carried by the mounting bracket and is allowed to hang free, extending substantially vertically from the mounting bracket, and d) bringing the rectangular frame into abutment with the inclined wall along all of the periphery of the building aperture.

In this way, an improved method for mounting a roller screen for shielding a building aperture, such as a roof window area, in an inclined wall is provided. Such a method simplifies, especially by virtue of the above- mentioned step a), the mounting procedure since the rectangular frame may be assembled, e.g. on a floor, before mounting any of the components on the inclined wall.

Furthermore, by mounting the mounting bracket in a separate step, step b), the installer may focus on the mounting bracket only during this step, and only subsequently engage the assembled rectangular frame with the mounting bracket. Since the rectangular frame is allowed to hang free on the mounting bracket, the installer may let go of the rectangular frame and reach for tools etc. in preparation of the subsequent step d). In particular due to steps b) and c), adjustment of the roller screen with respect to the inclined wall becomes possible even after having brought the roller screen and the inclined wall into abutment, since the rectangular frame is only subsequent to step d) fixed to the inclined wall.

In principle, the mounting bracket could have any suitable configuration allowing the assembled rectangular frame to be carried temporarily in its free-hanging position following step c). he possibility of choosing the desired configuration as either a U or a stylized inverted S provides for flexibility while at the same time, a secure temporary engagement between the top casing and the mounting bracket is ensured in the free-hanging position.

In a presently preferred embodiment, the step of bringing the rectangular frame into abutment with the inclined wall is performed by rotating the rectangular frame around an axis defined by the mounting bracket. Alternatively, or additionally, the step of bringing the rectangular frame into abutment with the inclined wall may be performed by performing a rotational movement of the rectangular frame such as to bring the bottom element into abutment with the inclined wall. Thereby a particularly simple mounting method is provided for.

In another embodiment the method comprises the further step of fixing the rectangular frame to the inclined wall by means of a fastening element. Fastening elements such as screws are available in many variations depending on the type of material in the inclined wall and the fastening operation may be carried out relatively easily to provide for a reliable fastening.

In another presently preferred embodiment the bottom element comprises an opening adapted for receiving a fastening element, and the method comprises the further step of fixing the rectangular frame to the inclined wall by temporarily fixing the bottom element to the inclined wall by means of the fastening element in a first, intermediate position, and subsequently in a second, final position. Dedicating an opening in the bottom element facilitates the mounting process.

In a further development of this embodiment the opening is an oblong opening, and the method comprises the further steps of fixing the rectangular frame to the inclined wall by temporarily fixing the bottom element to the inclined wall by means of the fastening element in a first, intermediate position, adjusting the sideways position of the bottom element and of the top casing, and fixing the position of the bottom element and of the top casing with respect to the inclined wall by means of the fastening element in a second, final position. The provision of the oblong opening facilitates the mounting process even further. Thereby, a method is provided with which secure and correct mounting of the roller screen on an inclined wall is provided for in such a manner that no gaps or openings are unintentionally left behind. By particularly providing an oblong hole in the bottom element, the sideways position of the bottom element may be adjusted before fixing the position of the bottom element with respect to the inclined wall. Thereby, correct positioning of the roller screen is ensured, even in case of a building aperture with a cross-section deviating from a perfect rectangle, which is in practice often the case.

In an embodiment at least one of the side elements comprises an opening adapted for receiving a further fastening element, and the step of fixing the rectangular frame to the inclined wall comprises fixing the side element to the inclined wall by means of a further fastening element. Thereby, an even more secure mounting of the roller screen on an inclined wall is provided for. Advantageously, the step of bringing the top casing of the rectangular frame into engagement with the mounting bracket comprises the step of bringing the rear surface of the top casing into engagement with at least the third leg of the mounting bracket. The engagement could alternatively be carried out at the upper surface of the top casing; however, this would render the parts necessary to achieve the engagement more difficult to hide.

In a presently preferred further development of this embodiment, a track is provided in and extends in a longitudinal direction of the rear surface of the top casing adjacent to the upper surface of the top casing, and the second and third leg of the mounting bracket and the track of the top casing are adapted for locking engagement with each other. This provides for a further simplified and secure process for mounting a roller screen on an inclined wall, since it is thereby avoided that the roller screen and the mounting bracket unintentionally come out of engagement during the mounting process. Thus, in the step of bringing the assembled rectangular frame into engagement with the mounting bracket, the frame is held at an angle other than vertical, away from the inclined inner wall, and once the engagement has been established and the rectangular frame allowed to hang freely, the frame cannot be retracted without rotating it.

In a further development of this embodiment, the second leg and the third leg extend at an angle b with respect to each other, the angle b being between 90 and 110 degrees, particularly substantially 100 degrees. This provides for a particularly simple locking of the top casing to the mounting bracket during mounting, and further for a logical and effective mounting process.

In an embodiment the second leg comprises a first width measured as the shortest extension of the second leg between the first and second leg, the third leg comprises a second width measured as the extension of the third leg from the second leg to an opposite free edge, the track comprises a first measure measured as the shortest distance between a lower edge and an upper edge of the track, a second measure measured as the shortest distance from the lower edge of the track and an inner surface of the upper surface of the top casing facing the interior of the top casing and a third measure measured as the distance between the upper edge of the track and a transition between the lower edge of the track and the rear surface of the top casing, the first measure, the second measure, the first width and the second width are dimensioned in such a way with respect to each other that when the rear surface of the top casing and the first leg of the mounting bracket are arranged in a first angle with respect to one another, the top casing and the mounting bracket may be released from one another, and that when the rear surface of the top casing and the first leg of the mounting bracket are arranged in a second angle with respect to one another, the top casing and the mounting bracket are locked to one another, and the first angle is larger than the second angle. Thereby a track, and thus a top casing and eventually roller screen, and a mounting bracket with a particularly simple structure capable of obtaining the advantageous locking engagement with one another is provided for.

In an embodiment the first angle is larger than 35 degrees and the second angle is smaller than 15 degrees. Such values of the first and second angle have proved particularly useful in connection with commonly occurring inclinations of inclined walls.

In an embodiment the first width is larger than the first measure and smaller than the second measure.

In an embodiment the second width is larger than the third measure. Thereby, the advantageous locking engagement is provided for in a particularly simple manner not only structurally but also with a view to securing that said engagement is obtained during the mounting procedure.

In principle, the mounting bracket could be formed in any suitable way allowing the assembled rectangular frame to be carried by the mounting bracket following the engagement step. In a presently preferred embodiment, the third leg of the mounting bracket is provided with a free edge opposite to the second leg configured to engage with a portion of the top casing, the shape of the free edge being preferably adapted to the shape of the portion of the top casing, more preferably the free edge has a rounded shape to interact with a rounded portion of the top casing

In a development of this presently preferred embodiment, the top casing comprises a delimiting part adapted for delimiting the opening of the track, the mounting bracket comprises a hook-shaped part arranged at the free edge of the second leg opposite to the third leg, and the hook-shaped part is adapted for engagement with the delimiting part. Thereby an even simpler and safer locking engagement is provided for while also further ensuring that is avoided that the roller screen and the mounting bracket unintentionally come out of engagement during the mounting process. The rotating movement to bring the assembled rectangular frame hanging vertically from the mounting bracket to the inclined position substantially parallel to the inner wall is facilitate in such embodiments where the free edge of the third leg of the mounting bracket and the relevant portion of the top casing are adapted to each other, in particular if they both have a rounded shape.

In an embodiment the side rails comprise extension elements, and the step of assembling comprises assembling a rectangular frame comprising the top casing, the bottom element, the first and second side rails and the extension elements such that the top casing and the bottom element extend substantially in parallel to each other, and that the first and second side rail with extension elements extend substantially in parallel to each other and connecting the top casing and the bottom element. Such extension elements provide for a simple and effective manner of adapting the size of the rectangular frame to the size of the building aperture or the roof window on site.

In a second aspect of the invention, the above and other advantages are also obtained by means of a roller screen, in particular in the form of an insect net or the like, for shielding a building aperture, in particular a window area in an inclined wall, the roller screen comprising a top casing, a bottom element, first and second side rails, a mounting bracket and a screen, in which the top casing, the bottom element and the first and second side rails are configured for assembly into a rectangular frame such that the top casing and the bottom element extend substantially in parallel to each other, and that the first and second side rail extend substantially in parallel to each other and connecting the top casing and the bottom element. The mounting bracket comprises a first leg configured for abutment against the inclined wall, a second leg extending in parallel with the first leg and a third leg extending perpendicular to and connecting the first leg and the second leg, the top casing comprises a rear surface configured to abut the inclined wall in a mounted condition of the roller screen, a front surface configured to face away from the inclined wall in a mounted condition of the roller screen, an upper surface configured to connect the rear surface and the front surface, and a track provided in and extending in a longitudinal direction of the rear surface adjacent to the upper surface, and the second and third leg of the mounting bracket and the track of the top casing are configured for locking engagement with each other.

Other presently preferred embodiments and further advantages will be apparent from the subsequent detailed description and drawings.

A feature described in relation to one of the aspect may also be incorporated in the other aspect, and the advantage of the feature is applicable to all aspects in which it is incorporated.

Brief Description of Drawings

In the following description embodiments of the invention will be described with reference to the schematic drawings, in which

Fig. 1 is a perspective view of a roller screen in an embodiment of the invention mounted at a building aperture;

Fig. 2 shows an exploded plan view of a roller screen in an embodiment of the invention before assembly;

Fig. 3 shows an enlarged view of a part of a bottom element of the roller screen of Fig. 2, corresponding to the detail III shown in Fig. 2;

Fig. 4 is a schematic cross-sectional view of a top casing and a mounting bracket of the roller screen of Fig. 2;

Fig. 5 shows an enlarged view of a part of the top casing of Fig. 4;

Figs. 6 to 8 show cross-sectional views of the top casing and mounting bracket of a roller screen according to the invention in three consecutive stages during mounting of the roller screen on a building aperture in an inclined roof; and

Figs 9 and 10 show cross-sectional views of the top casing and the mounting bracket in a mounted condition of the roller screen, in two different positions relative to the inner wall surrounding a building aperture.

Description of Embodiments

In the following detailed description, a preferred embodiments of the present invention will be described. Flowever, it is to be understood that features of the different embodiments are exchangeable between the embodiments and may be combined in different ways, unless anything else is specifically indicated. It may also be noted that, for the sake of clarity, the dimensions of certain components illustrated in the drawings may differ from the corresponding dimensions in real-life implementations.

It is noted that terms such as “up”, “down”, “left-hand”, “right-hand”, “exterior”, “interior”, “outer”, “inner” are relative and refers to the viewpoint in question.

Referring initially to Fig. 1, a first embodiment of a screening arrangement in the form of a roller screen 1 mounted at a building aperture 3 in an inclined wall 35 is shown. The roller screen 1 may be in the form of an insect net or the like. The roller screen 1 may be for shielding a building aperture 3, in particular a window area in an inclined wall or an inclined wall. The building aperture 3 is delimited by side inclined walls 31 and 32, an upper inclined wall 33 and a lower inclined wall 34 and the roller screen 1 is mounted on the internal side of the building aperture 3 on the inclined wall 35. A periphery is defined by surface portions of the inclined wall 35, i.e. extending in a plane substantially perpendicular to the side inclined walls 31, 32, the upper inclined wall 33 and the lower inclined wall 34.

The roller screen 1 may also be mounted directly on a sash 21 of a roof window 2 mounted in the building aperture 3. The sash 21 comprises side elements 22, a top element 23 and a bottom element 24, and the roller screen 1 is mounted on the internal side of the sash 21 facing the interior of a building in which the roof window 2 is mounted.

The roller screen 1 comprises a supply condition and a condition of use. Referring also to Fig. 2, the roller screen 1 further comprises a top casing 4, a bottom element 5 and first and second side rails 6, 7. In an assembled condition, as shown in Fig. 1 , the top casing 4, bottom element 5 and first and second side rails 6, 7 form a rectangular frame where the top casing 4 and a bottom element 5 extending substantially in parallel to each other in a first longitudinal direction defining, in the condition of use, a width direction, and where the first and second side rails 6, 7 extend substantially in parallel to each other in a second longitudinal direction defining, in the condition of use, a height direction. The first longitudinal direction is substantially perpendicular to the second longitudinal direction. The first and second side rails 6, 7 thus connect the top casing 4 and the bottom element 5. The thus formed rectangular frame delimits an aperture 100. Furthermore, the roller screen 1 may comprise connection elements or inserts 40 configured to connect the top casing to the side rails and corner connection elements or inserts 60 configured to connect the bottom element to the side rails.

The roller screen 1 may further comprise extension elements 8, 9 for the first and second side rails 6, 7. The extension elements 8, 9 make it possible to extend the side rails 6, 7 such as to fit the roller screen 1 to the size of the building aperture 3 or roof window 2 during mounting. The roller screen 1 may also comprise further connection elements or inserts similar to the connection elements 40 configured for connecting the side rails and the extension elements.

The top casing 4, bottom element 5, side rails 6, 7 and, if provided, the extension elements 8, 9 are intended to be arranged along the edges of the building aperture 3 or along the edges of the sash 21 of the roof window 2. An arrestable locking device for engagement with a retainer device may be provided at the bottom of each guide rail of the side rails 6, 7.

The roller screen 1 further comprises a screening body in the form of a lightweight flexible screen 10, which may be made of wire mesh 15. The screen of wire mesh 15 is an insect net adapted to cover an aperture of a window in order to prevent insects, leaves, debris, birds and the like from entering the building while a flow of fresh air into the building is permitted. The screen of wire mesh 15 may be a wire net of metal, fiberglass and the like synthetic fibers in a mesh or a plastic mesh made from polypropylene, polyethylene, nylon, PVC or PTFE or the like materials. Preferably, the screen of wire mesh 15 is a PVC coated insect net of fiberglass. In order to facilitate handling of the roller screen in a storage condition, the screen of wire mesh 15 is preferably made so flexible that it may be wound up for easier handling during storage outside the season or in the supply condition of the roller screen 1. The side edges of the screen 10 are guided in tracks (not shown in detail) in the side rails 6, 7, and if present, the extension elements 8, 9. The screen 10 of wire mesh 15 thus covers the aperture 100 of the rectangular frame completely in the condition of use.

The roller screen 1 further comprises a spring-biased roller bar 12 (cf. Fig 4) arranged in the top casing 4. The top casing 4 and the roller bar 12 are to be mounted at an upper edge of the building aperture 3 or roof window 2.

A bottom bar 13 is arranged at a bottom edge 11 of the flexible screen 10. The flexible screen 10 is designed to be wound and unwound from a screening position to a non-screening position, and vice versa, by winding and unwinding, respectively, the flexible screen 10 on the roller bar 12. The bottom bar 13 comprises at its opposite ends guide members slidable in guide tracks of the side rails 6, 7. The bottom bar 13 comprises a handle portion 14 intended to be gripped by a user when operating the roller screen 1. Although not described in detail here, the handle portion 14 is provided in the form of a longitudinal recess in the bottom bar 13 to allow a user to introduce finger/s to operate the screening arrangement 1.

Referring also to Fig. 3, the bottom element 5 further comprises an opening 18 for receiving a fastening element 19, such as a screw, for fixing the bottom element 5 to the inclined wall 35. The bottom element 5 is temporarily fixed to the inclined wall 35 in a first, intermediate position. Following sideways adjustment of the bottom element 5 and of the top casing 4, such that the rectangular shape is retained, the bottom element 5 and consequently the top casing are fixed in a second, final position. The opening 18 is an oblong opening allowing for adjusting the sideways position of the assembled rectangular frame before fastening the fastening element 19 completely and thus fixing the position of the bottom element 5 and of the other components with respect to the inclined wall 35. Alternatively, the opening 18 may be a round opening.

Furthermore, at least one of the side elements 6 and 7 may in a similar manner comprise an opening for receiving a further fastening element for fixing the side element 6, 7 to the inclined wall 35. Also, the extension elements 8, 9, where provided, may also comprise such an opening.

Referring now to Fig. 4, the top casing 4 comprises a rear surface 41 , a front surface 42 and an upper surface 43. The rear surface 41 abuts the inclined wall 35 in a mounted condition of the roller screen 1. The front surface 42 faces away from the inclined wall 35 in a mounted condition of the roller screen 1. The upper surface 43 connects the rear surface 41 and the front surface 42. The top casing 4 defines an interior 49 in which the roller bar 12 is accommodated. The flexible screen 10 is at one end portion connected to the roller bar 12 and wound on the roller bar 12 such that most of the flexible screen 10 is also accommodated in the top casing 4 in the non screening position. Fig. 4 is a simplistic view, not showing the connection of the flexible screen 10 to the bottom bar 13. An opening 48 allows insertion of the flexible screen 10 into the interior 49 of the top casing 4.

In the embodiment shown, the top casing 4 further comprises a track 44 provided in the rear surface 41 of the top casing 4 in a position adjacent to, close to or near the upper surface 43 of the top casing 4. The track 44 is adapted for receiving a part of a mounting bracket 16 to be described further below. The track 44 extends in a longitudinal direction of the top casing 4 between opposite longitudinal ends 47a and 47b (Fig. 2) of the top casing 4. The track 44 may extend all the way or part of the way, preferably centrally, between the opposite longitudinal ends 47a and 47b of the top casing 4.

Referring also to Fig. 5, the track 44 comprises a first measure d1 measured as the shortest distance between a lower edge 441 and an upper edge 443 of the track 44, a second measure d2 measured as the shortest distance from the lower edge 441 of the track 44 and an inner surface 444 of the upper surface 43 of the top casing 4 and a third measure d3 measured as the distance between the upper edge 443 of the track 44 and a transition 442 or edge between the lower edge 441 of the track 44 and the rear surface 41 of the top casing 4. The gap between the lower edge 441 and the upper edge 443 of the track 44 forms an opening 445 of the track 44 towards the exterior. The top casing 4 may further comprise a delimiting part 45 to delimit the opening 445 of the track 44. Also, an element 446, such as an inclined wall element or a sealing, may be provided for delimiting the track 44 towards the remaining interior 49 of the top casing 4. Furthermore, an optional element 46, such as a foam list or pillow, for supporting the top casing 4 against the inclined wall 35 may be provided for.

The roller screen 1 further comprises a mounting bracket 16. The mounting bracket 16 comprises a first leg 161 adapted for abutment against the inclined wall 35, a second leg 162 extending perpendicular to the first leg 161 and a third leg 163 extending from the second leg 162 opposite to the first leg 161 and away from the first leg 161. The mounting bracket 16 may further comprise a hook-shaped part 164 arranged at a free edge 165 of the third leg 163 opposite to the second leg 162. The hook-shaped part 164 is adapted for engagement with the delimiting part 45 of the top casing 4. The first leg 161 may comprise a hole 166 for a fastening element 17.

Generally, the second leg 162 and the third leg 163 of the mounting bracket 16 and the track 44 of the top casing 4 are adapted for engagement with each other. More particularly, the mounting bracket 16 is adapted for locking engagement with the track 44.

As may be seen on Fig. 4, the second leg 162 comprises a first width W1 measured as the shortest extension of the second leg 162 between the first leg 161 and the third leg 163. The third leg 163 comprises a second width W2 measured as the extension of the third leg 163 from the second leg 162 to an opposite free edge 165 of the third leg 163. The free edge 165 opposite to the second leg 162 may in principle be configured to engage with an arbitrary portion of the top casing 4. In order to ensure satisfactory engagement, the shape of the free edge 165 is preferably adapted to the shape of the relevant portion of the top casing 4. As shown, the free edge 165 has a rounded shape to interact with a rounded portion of the top casing 4, here defined as a diameter D164 of the hook-shaped part 164.

The second leg 162 and the third leg 163 extend at an angle b with respect to each other. The angle b is between 90 and 110 degrees, particularly substantially 100 degrees.

The first measure d1 , the second measure D2, the first width W1 and the second width W2 are generally dimensioned in such a way with respect to each other, that when the rear surface 41 of the top casing 4 and the first leg 161 of the mounting bracket 16 are arranged in a first angle Q1 (Fig. 6) with respect to one another, the top casing 4 and the mounting bracket 16 may be released from one another, and that when the rear surface 41 of the top casing 4 and the first leg 161 of the mounting bracket 16 are arranged in a second angle Q2 (Fig. 7) with respect to one another, the top casing 4 and the mounting bracket 16 are locked to one another. Generally, the first angle Q1 is larger than the second angle Q2. In the embodiment shown, the first angle Q1 is generally 35 degrees or larger, while the second angle Q2 is 15 degrees or smaller.

Generally, the first width W1 is larger than the first measure d1 and smaller than the second measure d2. Also, the second width W2 is larger than the third measure d3.

Referring now to Figs. 6 to 10, a method for mounting a roller screen according to the invention on a building aperture 3 will be described. In case the roller screen 1 is instead to be mounted directly on a sash 21 of a window 2, the same method may be applied.

In a first step, a rectangular frame (cf. Figs. 1 and 2) comprising the top casing 4, the bottom element 5 and the first and second side rails 6, 7 is assembled such that the top casing 4 and the bottom element 5 extend substantially in parallel to each other, and that the first and second side rail 6, 7 extend substantially in parallel to each other and connecting the top casing 4 with the bottom element 5. If extension elements 8, 9 are provided, the rectangular frame is assembled to also comprise the extension elements 8, 9 such that they are arranged in extension of and in parallel with the side rails 6, 7.

The rectangular frame may also be described such that the top casing 4, the bottom element 5 and the first and second side rails 6, 7 in the first step are assembled into a rectangular frame such that the top casing 4 and the bottom element 5 extend substantially in parallel to each other in a first longitudinal direction defining a width direction, and that the first and second side rail 6, 7 extend substantially in parallel to each other in a second longitudinal direction defining a height direction, where the first longitudinal direction is substantially perpendicular to the second longitudinal direction.

In a second step (Fig. 6) the mounting bracket 16 is mounted on an inclined wall 35 of a building adjacent to a top inclined wall 33 (Fig. 1) of the building aperture 3. This may be obtained by inserting a fastening element 17, such as a screw, through the hole 166 (Fig. 4) in the first leg 161 (Fig. 4) of the mounting bracket 16. In a third step (Fig. 7) the rectangular frame is brought into engagement with the mounting bracket 16 in such a way that the rectangular frame extends vertically from the mounting bracket 16.

To this effect the rectangular frame is first held in a first angle Q1 (Fig. 6) with the first leg 161 of the mounting bracket 16. Then, the third leg 163 and, if provided the hook-shaped element 164, is inserted through the opening 445 into the track 44 of the top casing 4. Then, the rectangular frame is brought to extend in a second angle Q2 (Fig. 7) with the first leg 161 of the mounting bracket 16 such as to also extend vertically from the mounting bracket 16. The top casing 4, and thus the rectangular frame, and the mounting bracket 16 are now locked to one another. In other words, the assembled rectangular frame is brought into engagement with the mounting bracket by holding the frame at an angle other than vertical, away from the inclined inner wall. Once the engagement has been established and the rectangular frame is allowed to hang freely, the frame cannot be retracted without rotating it. Should the need for disengagement arise, the rectangular frame is rotated back to its insertion position and lifted out of the engagement with the mounting bracket.

In a fourth step (Fig. 8), the rectangular frame is brought into abutment with the inclined wall 35 along all of the periphery of the building aperture 3. By the term “along all of the periphery” in conjunction with the inclined wall 35 is meant surfaces substantially parallel to the general surface of the inclined wall 35 and to the general plane of the screening body, i.e. of the flexible screen 10 in its screening position.

The fourth step may be performed by rotating the rectangular frame around an axis defined by the mounting bracket 16, and particularly by the second leg 162 (Fig. 4) of the mounting bracket 16, and/or by, by means of a rotational movement of the rectangular frame, bringing the bottom element 5 into abutment with the inclined wall 35.

Subsequently, the rectangular frame may be fixed to the inclined wall 35 by means of a fastening element 19 brought through a hole 18 in the bottom element 5. Similarly, further fastening element(s) may optionally be used to fix the side rails 6, 7 and/or extension elements 8, 9 to the inclined wall 35. Typically, such fastening element(s) include screws adapted for the material of the inner wall.

Also, when the opening 18 provided in the bottom element 5 is an oblong opening, a further step of adjusting the sideways position of the frame element may be performed before finally fixing the bottom element in position on the inclined wall 35.

Turning finally to Figs 9 and 10, the top casing 4 of the roller screen 1 is shown in its mounted condition on the inclined wall 35. Other parts of the roller screen 1 are not shown for ease of reading.

In the position of the top casing 4 shown in Fig. 9, the free edge 165 of the third leg of the mounting bracket 16 is positioned at a distance from the delimiting part 45 of the top casing 4, whereas in the position shown in Fig. 10, the free edge 165 is in abutment with the delimiting part 45. In turn, this means that entire top casing 4 is located further from the inner wall 35 in the position of Fig. 10 than in Fig. 9. Thus, any unevenness of the surface of the inner wall, along the periphery of the building aperture may be compensated for in that the position of the top casing 4 relative to the mounting bracket 16 may be adjusted in this way.

Further aspects of a method according to the invention include the following.

A method for mounting a roller screen 1, in particular in the form of an insect net or the like, for shielding a building aperture 3, in particular a roof window area, in an inclined wall, which roller screen comprises a top casing 4, a bottom element 5, first and second side rails 6, 7, a mounting bracket 16 and a screen 10 with opposing marginal areas adapted for being in releasable engagement with said first and second side rails 6, 7 in a condition of use, said screen being adapted for being arranged in the top casing 4 in a supply condition, the method comprising the steps of: a) assembling a rectangular frame comprising the top casing 4, the bottom element 5 and the first and second side rails 6, 7 such that the top casing 4 and the bottom element 5 extend substantially in parallel to each other, and that the first and second side rail 6, 7 extend substantially in parallel to each other and connecting the top casing and the bottom element, b) mounting the mounting bracket 16 on an inclined wall 35 of a building adjacent to a top wall 33 of the building aperture 3, c) bringing the top casing 4 of the rectangular frame into engagement with the mounting bracket 16 in such a way that the rectangular frame extends vertically from the mounting bracket, and d) bringing the rectangular frame into abutment with the inclined wall 35 along all of the periphery of the building aperture 3.

A method for mounting a roller screen 1, in particular in the form of an insect net or the like, for shielding a building aperture 3, in particular a roof window area, in an inclined wall, which roller screen comprises a top casing 4, a bottom element 5, first and second side rails 6, 7, a mounting bracket 16 and a screen 10, particularly a screen 10 with opposing marginal areas adapted for being in releasable engagement with said first and second side rails 6, 7 in a condition of use, said screen 10 being adapted for being arranged in the top casing 4 in a supply condition, the method comprising the steps of: a) assembling a rectangular frame comprising the top casing 4, the bottom element 5 and the first and second side rails 6, 7 such that the top casing 4 and the bottom element 5 extend substantially in parallel to each other, and that the first and second side rail 6, 7 extend substantially in parallel to each other and connecting the top casing and the bottom element, b) mounting the mounting bracket 16 on a top sash element 23 of a roof window 2 mounted in an inclined wall 35 of a building, c) bringing the rectangular frame into engagement with the mounting bracket 16 in such a way that the rectangular frame extends vertically from the mounting bracket, and d) bringing the rectangular frame into abutment with the inclined wall 35 along all of the periphery of the building aperture 3.

The person skilled in the art realizes that the present invention by no means is limited to the preferred embodiments described above. On the contrary, many modifications and variations are possible within the scope of the appended claims.

List of reference numerals

1 roller screen

2 roof window

21 sash

22 side sash element

23 top sash element

24 bottom sash element

3 building aperture

31 side wall

32 side wall

33 top wall

34 bottom wall

35 inclined wall

4 top casing

40 top connection corner / insert

41 rear surface

42 front surface

43 upper surface

44 track

441 lower edge

442 transition / edge

443 upper edge

444 inner surface of upper surface

445 opening

45 delimiting part

46 foam pillow 47a opposite end 47b opposite end

48 opening

49 interior

5 bottom element

6 side rail

7 side rail

8 extension element

9 extension element

10 screening body / flexible screen

11 bottom edge

12 spring-biased roller bar

13 bottom profile

14 handle

15 wire mesh

16 mounting bracket

161 first leg

162 second leg

163 third leg 164 hook-shaped part

165 free edge

166 hole in first leg 161

17 fastening means

18 opening in bottom element

19 fastening element

60 bottom connection corner / insert

100 aperture d1 first measure of track 44 d2 second measure of track 44 d3 third measure of track 44 d4 fourth measure of track 44

D164 diameter of hook-shaped part 164

W1 width of second leg 162 of mounting bracket 16

W2 width of third leg 163 of mounting bracket 16

W width direction

Q1 first angle

Q2 second angle b Angle

Claims

1. A method for mounting a roller screen (1), in particular in the form of an insect net or the like, for shielding a building aperture (3), in particular a roof window area, in an inclined wall (35), which roller screen comprises: a top casing (4) comprising a rear surface (41) adapted for abutting the inclined wall (35) in a mounted condition of the roller screen, a front surface (42) adapted for facing away from the inclined wall in a mounted condition of the roller screen, and an upper surface (43) adapted for connecting the rear surface (41 ) and the front surface (42), a bottom element (5), first and second side rails (6, 7), a mounting bracket (16) comprising a first leg (161) adapted for abutment against the inclined wall, a second leg (162) extending at angle to the first leg (161), and a third leg (163) extending from the second leg (162) either in the same direction as the first leg to form a substantially U-shaped configuration, or in an opposite direction to the first leg (161) to form a stylized inverted S configuration, and a screening body (10), the method comprising the steps of: a) assembling a rectangular frame comprising the top casing (4), the bottom element (5) and the first and second side rails (6, 7) such that the top casing (4) and the bottom element (5) extend substantially in parallel to each other, and that the first and second side rail (6, 7) extend substantially in parallel to each other and connecting the top casing (3) and the bottom element (5), b) mounting the mounting bracket (16) on an inclined wall (35) of a building adjacent to a top wall (33) of the building aperture (3), c) bringing the top casing (4) of the rectangular frame into engagement with the mounting bracket (16) in such a way that the rectangular frame is carried by the mounting bracket (16) and is allowed to hang free, extending substantially vertically from the mounting bracket, and d) bringing the rectangular frame into abutment with the inclined wall (35) along all of the periphery of the building aperture (3).

2. The method according to claim 1 , wherein the step of bringing the rectangular frame into abutment with the inclined wall (35) comprises any one or more of the following: rotating the rectangular frame around an axis defined by the mounting bracket (16), and bringing, by means of a rotational movement of the rectangular frame, the bottom element (5) into abutment with the inclined wall (35).

3. The method according to claim 1 or 2, and comprising the further step of fixing the rectangular frame to the inclined wall (35) by means of a fastening element (19).

4. The method according to any one of the above claims, wherein the bottom element (5) comprises an opening (18) adapted for receiving a fastening element (19), and wherein the method comprises the further step of fixing the rectangular frame to the inclined wall (35) by temporarily fixing the bottom element (5) to the inclined wall by means of the fastening element in a first, intermediate position, and subsequently in a second, final position.

5. The method according to any one of the above claims, wherein the bottom element (5) comprises an opening (18) adapted for receiving a fastening element (19), wherein the opening (18) is an oblong opening, and wherein the method comprises the further steps of fixing the rectangular frame to the inclined wall (35) by fixing the bottom element (5) temporarily to the inclined wall (35) by means of the fastening element (19) in a first, intermediate position, adjusting the sideways position of the bottom element (5) and of the top casing (4), and fixing the position of the bottom element (5) and of the top casing (4) with respect to the inclined wall (35) by means of the fastening element (19) in a second, final position.

6. The method according to any one of the above claims 3 to 5, wherein at least one of the side elements (6, 7) comprises an opening adapted for receiving a further fastening element, and wherein the step of fixing the rectangular frame to the inclined wall (35) comprises fixing the side element (6, 7) to the inclined wall by means of a further fastening element.

7. The method according to any one of the above claims, wherein the step of bringing the top casing (4) of the rectangular frame into engagement with the mounting bracket (16) comprises the step of bringing the rear surface (41) of the top casing (4) into engagement with at least the third leg (163) of the mounting bracket (16)..

8. The method of claim 7, wherein a track (44) is provided in and extends in a longitudinal direction of the rear surface (41 ) of the top casing (4) adjacent to the upper surface (43) of the top casing, and the second and third leg (162, 163) of the mounting bracket (16) and the track (44) of the top casing (4) are adapted for locking engagement with each other.

9. The method according to claim 8, wherein the second leg (162) and the third leg (163) extend in an angle b with respect to each other, the angle b being between 90 and 110 degrees, particularly substantially 100 degrees.

10. The method according to claim 8 or 9, wherein: the second leg (162) comprises a first width (W1) measured as the shortest extension of the second leg between the first and third leg, the third leg (163) comprises a second width (W2) measured as the extension of the third leg from the second leg to an opposite free edge (165), the track (44) comprises a first measure (d1) measured as the shortest distance between a lower edge (441 ) and an upper edge (443) of the track, a second measure (d2) measured as the shortest distance from the lower edge (441) of the track and an inner surface (444) of the upper surface (43) of the top casing facing the interior (49) of the top casing and a third measure (d3) measured as the distance between the upper edge (443) of the track and a transition (442) between the lower edge (441 ) of the track and the rear surface (41 ) of the top casing, the first measure (d1), the second measure (d2), the first width (W1) and the second width (W2) are dimensioned in such a way with respect to each other that when the rear surface (41 ) of the top casing (4) and the first leg (161) of the mounting bracket (16) are arranged in a first angle (Q1) with respect to one another, the top casing and the mounting bracket may be released from one another, and that when the rear surface (41 ) of the top casing (4) and the first leg (161) of the mounting bracket (16) are arranged in a second angle (Q2) with respect to one another, the top casing and the mounting bracket are locked to one another, and the first angle (Q1 ) is larger than the second angle (Q2).

11. The method according to claim 10, wherein the first angle (Q1) is larger than 35 degrees and the second angle (Q2) is smaller than 15 degrees.

12. The method according to claim 10 or 11, wherein the first width (W1) is larger than the first measure (d1) and smaller than the second measure (d2).

13. The method according to any one of claims 10 to 12, wherein the second width (W2) is larger than the third measure (d3).

14. The method according to any one of claims 7 to 13, wherein the third leg (163) of the mounting bracket (16) is provided with a free edge (165) opposite to the second leg (162) configured to engage with a portion of the top casing (4), the shape of the free edge (165) being preferably adapted to the shape of the portion of the top casing (4), more preferably the free edge (165) has a rounded shape to interact with a rounded portion of the top casing (4).

15. The method of claim 14, wherein the top casing (4) comprises a delimiting part (45) adapted for delimiting the opening (445) of the track (44), the mounting bracket (16) comprises a hook-shaped part (164) arranged at the free edge (165) of the third leg (163) opposite to the second leg (162), and the hook-shaped part (164) is adapted for engagement with the delimiting part (45).

16. The method according to any one of the above claims, wherein the side rails (6, 7) comprise extension elements (8, 9), and wherein the step of assembling comprises assembling a rectangular frame comprising the top casing (4), the bottom element (5), the first and second side rails (6, 7) and the extension elements (8, 9) such that the top casing (4) and the bottom element (5) extend substantially in parallel to each other, and that the first and second side rail (6, 7) with extension elements (8, 9) extend substantially in parallel to each other and connecting the top casing and the bottom element.

17. A roller screen (1), in particular in the form of an insect net or the like, for shielding a building aperture, in particular a roof window area, in an inclined wall, the roller screen comprising a top casing (4), a bottom element (5), first and second side rails (6, 7), a mounting bracket (16) and a screen (10), and in which the top casing (4), the bottom element (5) and the first and second side rails (6, 7) are configured to be assembled into a rectangular frame such that the top casing (4) and the bottom element (5) extend substantially in parallel to each other, and that the first and second side rail (6, 7) extend substantially in parallel to each other and connecting the top casing and the bottom element, characterised in that the mounting bracket (16) comprises a first leg (161) configured for abutment against the inclined wall (35), a second leg (162) extending substantially perpendicularly to the first leg (161), and a third leg (163) extending from the second leg (162) either in the same direction as the first leg to form a substantially U-shaped configuration, or in an opposite direction to the first leg (161) and away from the first leg to form a stylized inverted S configuration, the top casing (4) comprises a rear surface (41) configured to abut the inclined wall (35) in a mounted condition of the roller screen (1), a front surface (42) configured to face away from the inclined wall in a mounted condition of the roller screen, an upper surface (43) configured to connect the rear surface (41) and the front surface (42), and a track (44) provided in and extending in a longitudinal direction of the rear surface (41) adjacent to the upper surface (43), and the second and third leg (162, 163) of the mounting bracket (16) and the track (44) of the top casing (4) are configured for locking engagement with each other.

18. A roller screen according to claim 17, wherein the second leg (162) and the third leg (163) extend at an angle b with respect to each other, the angle b being between 90 and 110 degrees, particularly substantially 100 degrees.

19. A roller screen according to any one of claims 17 and 18, wherein the second leg (162) comprises a first width (W1) measured as the shortest extension of the second leg (162) between the first and third leg, the third leg (163) comprises a second width (W2) measured as the extension of the third leg (163) from the second leg to an opposite free edge (165), the track (44) comprises a first measure (d1) measured as the shortest distance between a lower edge (441 ) and an upper edge (443) of the track, a second measure (D2) measured as the shortest distance from the lower edge (441) of the track and an inner surface (444) of the upper surface (43) of the top casing (4) facing the interior (49) of the top casing (4) and a third measure (d3) measured as the distance between the upper edge (443) of the track and a transition (442) between the lower edge (441 ) of the track and the rear surface (41 ) of the top casing, the first measure (d1), the second measure (d2), the first width (W1) and the second width (W2) are dimensioned in such a way with respect to each other that when the rear surface (41 ) of the top casing (4) and the first leg (161) of the mounting bracket (16) are arranged in a first angle (Q1) with respect to one another, the top casing and the mounting bracket may be released from one another, and that when the rear surface (41 ) of the top casing (4) and the first leg (161) of the mounting bracket (16) are arranged in a second angle (Q2) with respect to one another, the top casing and the mounting bracket are locked to one another, and the first angle (Q1 ) is larger than the second angle (Q2).

20. A roller screen according to claim 19, wherein the first angle (Q1) is larger than 35 degrees and the second angle (Q2) is smaller than 15 degrees.

21. A roller screen according to claim 19 or 20, wherein the first width (W1) is larger than the first measure (d1) and smaller than the second measure (d2).

22. A roller screen according to any one of claims 19 to 21, wherein the second width (W2) is larger than the third measure (d3).

23. A roller screen according to any one of claims 17 to 22, wherein the third leg (163) of the mounting bracket (16) is provided with a free edge (165) opposite to the second leg (162) configured to engage with a portion of the top casing (4), the shape of the free edge (165) being preferably adapted to the shape of the portion of the top casing (4), more preferably the free edge (165) has a rounded shape to interact with a rounded portion of the top casing (4).

24. A roller screen according to claim 23, wherein the top casing (4) comprises a delimiting part (45) adapted for delimiting the opening (445) of the track (44), the mounting bracket (16) comprises a hook-shaped part (164) arranged at the free edge (165) of the third leg (163) opposite to the second leg (162), and the hook-shaped part (164) is adapted for engagement with the delimiting part (45).

25. A roller screen according to any one of claim 17 to 24, wherein the bottom element (5) comprises an opening (18) adapted for receiving a fastening element (19) for fixing the roller screen to an inclined wall, wherein the opening is an oblong opening.

26. A roller screen according to any one of claims 17 to 25, wherein the side rails (6, 7) comprise extension elements (8, 9), and wherein the top casing (4), the bottom element (5), the first and second side rails (6, 7) and the extension elements (8, 9) are configured to be assembled into a rectangular frame such that the top casing (4) and the bottom element (5) extend substantially in parallel to each other, and that the first and second side rail (6, 7) with extension elements (8, 9) extend substantially in parallel to each other and connecting the top casing and the bottom element.