ES2270801T3 - ROLLER BLIND. - Google Patents

Abstract

Roller shutter or similar mobile closing surface, which is constituted by several sheets or profiled bars (12) articulated with their longitudinal sides of an aluminum alloy, whose outer surfaces (50) form at least in the closed position of the blind A visible surface (10) can be rolled up, characterized in that maintaining a stable surface action of the visible surface, the outer surface (50) of the sheet or the profiled bar (12) is divided through parallel lines (64, 68) in several longitudinal fields (60, 62) and at least one of the longitudinal fields has a curved surface contour (66, 70) in the cross section, a line (64, 68) presenting an angle of the cross section (w) and the angle of the cross section (w) of a line (64, 68) being between 170 ° and 178 ° and / or there is a maximum distance (n, n1) of a plane (K) determined through the lines (64, 68 ) with resp ecto to the curved surface contour (66, 70) below one hundredth of a sheet height (h).

Description

Roller blind.

The invention relates to a blind roller or similar mobile closing surface that is constituted  by several sheets or profiled bars that are articulated in their longitudinal sides, whose outer surfaces - at least on the closed position of the blind- form a viewing surface. He edge or longitudinal side of the sheet / s is configured as channel-shaped bearing shell, which extends remotely side of the surface of the blind as well as receive for the joint formation a longitudinal side similar to a hook in the cross section of the adjacent sheet.

Such roller shutters pressed by extrusion from an aluminum alloy are published, by example, in publication DE-U-87 12 982 with curved sheets in the cross section and used to the temporary closing of the openings of the windows, doors or other building openings as well as reed doors in Vehicle or furniture structures. They are provided with the advantage that they can be constituted in a simple way.

From the publication of the model of German utility G 93 10 826.5 a blind slat can be deduced  Rollable from a thin sheet profiled in the procedure of lamination from an aluminum alloy, which has a reinforcement insert and otherwise filled inside With insulation material. To this end, the main walls of the profiled slats are provided with notches, which represent a entry inside the ribbon and are configured in such a way that keep the insert in the correct position. The notches are configured in such a way that it is not necessary to take precautions in the manufacture of the ribbon, in order to prevent the insert has been inserted by slipping in front of the material of insulation and has solidified. After he has had the solidification, this notch function is no longer necessary. Do not However, it is also useful to reinforce the slat wall and provide the ribbon with an aesthetic image.

It has been revealed that it is an inconvenience that due to the plurality of profiled bars or articulated sheets adjacent to each other aluminum with flat viewing surface - with the improved surface through an anodizing layer - they call the very important optical attention the differences even insignificant of the degree of reflection.

In view of this, the inventor has raised the objective of eliminating these deficiencies and improving the surface of vision of such sheets or profiles of roller blinds. In addition, the articulation zone can be configured in a way more efficient.

The solution of this task leads to teaching of independent claim; The claims Dependents indicate favorable developments.

According to the invention, the outer surface of the sheet or of the profiled bar is divided by parallel lines into several longitudinal fields or surface bands and at least one of the longitudinal fields has a curved contour in the cross section of the surface. Thanks to this measure, the aforementioned negative optical effect is suppressed to the greatest extent possible; the flat and smooth viewing surface of the individual sheets is interrupted by juxtaposed undulations of only reduced depth; such undulations
-preferably between approximately 8 mm to 10 mm wide- can be manufactured in a very exact way through extrusion pressing.

The possibility of concave the contour of the field surface longitudinal and configure parallel lines as comb lines or, instead, convex a contour of the surface of this type as well as conceive those parallel lines as lines of valleys that are deeper. In both configurations, the angle of the cross section - which is designated  as comb angle or opening angle - must be between 170º and 178º, in a preferred way greater than 175º.

Through this type of procedure you get a structuring on the vision side of the sheets, without destroying the general image of the blind view Rollable in stable surface action, elegant desirable.

According to another feature of the invention, the contour of the longitudinal field surface can  be constituted by sections with different radii of curvature - for example it is connected in a middle section of the contour of the surface on both sides of a smaller curvature section, respectively.

According to the invention, the sheets singles almost touch on the viewing side in position closed roller shutter, so the separation between the individual profiles are inserted in a harmonious way in the division of the desired waves.

It has been revealed that it is especially advantageous to concave undulation because between juxtaposed deep waves with each other the comb lines mentioned as enhanced ribs; on these are traces that are they cause in some cases - due to improper handling or similar interventions- and the latter hardly attract attention optically

In a more advantageous way, the maximum distance of a plane, determined through the comb lines or the valley line, with respect to the curved structure of the surface, should be approximately below one hundredth of the height of the sheets, preferably between 1% and 3% of the width of the longitudinal field. In particular, this distance maximum in a longitudinal field between 10 mm and 11 mm should measure approximately 0.1 mm to 0.3 mm.

According to another feature of the invention, as a relationship of the width of the longitudinal field with with respect to the maximum plane distance of the comb lines or well of the comb lines from the curved contour of the surface - that is, the relationship between the distances of the waves and the depth of the waves or the height of the waves- is expected approximately 65 to 1; in this way, the ripple it still acts in an optically elegant way, there is also still the possibility of adaptation or the function of a board shutter guide profile on the surface of the blind Rollable

For the improvement of the joint in the blind roller of the type mentioned at the beginning, the bearing shell in the form of a channel, it has a seat at its end a free edge of the longitudinal side of the hook type and / or a channel arm otherwise straight in the cross section as stop for a straight hook rib on the longitudinal side of the type of hook. On each seat is an arm of a plastic profile that acts with damping effect, which extends between the moving surfaces of each other of the two parts of articulation

Other advantages, features and details of the invention are deduced from the following description of preferred embodiments as well as with the help of the drawing; in this:

Figure 1 shows an inclined view on an area of front edges aligned with each other with two plates or profiled bars of a roller blind or a surface of mobile closure of this type.

Figures 2 to 4 show in each case a top floor view on a fragment of the front edge of a sheet according to field II in figure 3 for three different embodiments.

Figure 5 shows the top plan view enlarged with respect to figure 1 on the front edge of a sheet.

Figures 6 and 7 show two pieces of articulation of the sheets as enlarged fragments of the figure 5.

Figure 8 shows an inclined view on a joint piece with associated plastic profile.

A rolling shutter 10 mobile, in general, in vertical direction, presents several sheets or profiled bars 12 connected to each other on their longitudinal sides and that can be articulate one in relation to the other, which are pressed by extrusion from an aluminum alloy. To that end, in the upper longitudinal side in figure 1 of the sheets 12 is integrally formed in these an articulation piece 14 as edge of the hook type, which is inserted into a piece of opposite joint 16 of the channel type of the adjacent sheet 12 and that is completed by forming a blind joint 18 roller.

The upper articulation piece 14 in the Figure 1 of sheet 12 comprises -view in cross-section-  a bend 20, a curved piece 22 directed upwardly from this one, with hook rib 24 inclined in one measure insignificant with respect to plane E of sheet 12 and which part from its end, in front of whose free edge 25 directed downwards there is a bottom hook rib 36 in the form of an angle straight with respect to the plane of the sheets E and projected from the same way from bending 20. The hook rib bottom 26 is equipped, at one end, with an appendage piece 28 parallel to the inside surface of the roller blind 11 as well as, on the other hand, with a channel 30 curved edge towards in and down, and is projected in a cantilever measure to -from here approximately 16 mm- from the inner surface of the roller shutter 11. Between it and the insert 28 is extends a list 32 integrally formed in the bending twenty.

The opposite joint piece 16 in one piece with the other longitudinal side of the sheet 12 is constituted  down a channel 34 open down the cross section in partial circle shape with a straight following channel 35 arm directed inclined with respect to the inner surface of the roller blind 11, whose free arm end 36 offers a seat 37 of the channel type for free edge 25 of the rib of hook 24 of the sheet 12 which follows downwards. During the turn of the sheets 12 with respect to each other, the straight arm of the channel 35 serves to limit travel; form a stop for lower hook rib 26. Otherwise, facing the end free of channel 36 is an outgoing slat 38 that points towards it.

The two articulation pieces 14, 16 of the two adjacent sheets 12 are inserted together under the collation of a plastic profile 40, which is configured, on the other hand, the type of channel. The plastic profile 40 that is can recognize in figure 8 it is supported with a wall section 42 L-shaped cross section on the outer side of the upper hook rib 24 and hook with its short arm bottom 43 under the free edge 25 of the hook rib 24. The wall section 42 passes to a tubular surface section 44 curved - which corresponds in the cross section to a quarter of circle-, from which a formed rib 46 is projected integrally The tubular surface section 44 offers on the side outside a housing slot 48 bounded by two cords 47 for the projecting strip 38 of the opposite joint piece 16 which is placed on the plastic profile 40.

The height h of the viewing surface or outer surface 50 of sheet 12 here measures approximately 70 mm, the distance between the free edge 25 of the piece of upper joint 14 with the free end of channel 36 of the Opposite lower articulation piece 16 has approximately 73 mm The outer radius r of the curved channel section 34 in the cross section that follows the inner surface of the roller blind 11, around the midpoint M of the contour of the seat 37 which is configured, in turn, in the form of channel, has approximately 10 mm, the cantilever length i of protruding slat 38 is here 1 mm; therefore, this corresponds approximately to the thickness of the profile e of 0.8 mm. From the side outside of channel section 34 are projected, parallel to the inner surface of the roller blind 11, on the one hand, a pair of support slats 52 as well as, on the other hand, a outer comb slat 54 inclined inwards.

The visible surface 50 of the sheet 12 is divided into five longitudinal fields 60 of width b of 10 mm as well as two outer fields 62 of width b1 reduced by one insignificant measure. In the embodiment according to Figures 1 and 2 -under the formation of parallel comb lines 64 as a field delimitation - the surface contour is concave shaped in the cross section for each one of the longitudinal fields or outer fields 60, 62; from comb line 64 to comb line 64 extends a surface contour 66 associated with a single radius R, whose maximum distance n -reproduced increased in Figure 2- with with respect to a plane K, determined through the comb lines 64 is between 0.1 mm and 0.3 mm, especially 0.15 mm. An angle w of the cross section or comb, delimited by the arms of the cross section of the comb line 64 of the grid type is between 170º and 179º, in the configuration represented in 177º.

In figure 3 -in another configuration-, the surface contour of a middle section 66a of radius R se extend on both sides in each case with an outer section 66b of the smallest inclination width f -radio R1- with respect to plane K. Here the total depth is designated with n.

In another embodiment according to the Figure 4, instead of the comb lines are provided lowered valley 68 as delimitation of the longitudinal fields 60, 62, that is, that the curved contour of the surface 70 is here convex with a maximum height n1 on the determined K plane along the valley lines 68, whose measure corresponds in each case to each of the depth or the distance n designated in the examples. The measure of the angle of the cross section t that is can designate as opening angle is the same way in the area designated above.

Also the convex contour of the surface 70 It can be composed - as explained in relation to Figure 3- by three partial zones.

Claims (17)

1. Rolling shutter or similar mobile closing surface, which is constituted by several profiled sheets or bars (12) articulated with their longitudinal sides of an aluminum alloy, whose outer surfaces (50) form at least in the closed position of the roller blind (10) a visible surface, characterized in that maintaining a stable surface action of the visible surface, the outer surface (50) of the sheet or of the profiled bar (12) is divided through parallel lines (64, 68) in several longitudinal fields (60, 62) and at least one of the longitudinal fields has a curved surface contour (66, 70) in the cross section, a line (64, 68) presenting an angle of the cross section (w ) and the angle of the cross section (w) of a line (64, 68) being between 170º and 178º and / or with a maximum distance (n, n_ {1}) of a plane (K) determined through the lines (64, 68) co n with respect to the curved surface contour (66, 70) below one hundredth of a sheet height (h). 2. Roller blind according to claim 1, characterized in that the surface contour (66; 66_ {a}, 66_ {b}) of the longitudinal field (60, 62) is concavely configured and the parallel lines are configured as comb lines (64). 3. Roller blind according to claim 2, characterized in that the angle of the cross section (w) of the enhanced comb line (64) is between 170 ° and 178 °, in a preferred manner over 176 °. 4. Roller blind according to claim 1, characterized in that the contour of the surface (70) of the longitudinal field (60, 62) is concavely shaped and the parallel lines are configured as valley lines (68) that are placed lower. 5. Roller blind according to claim 4, characterized in that the angle of the cross section (t) of the recessed valley line (68) is between 170 ° and 178 °, in a preferred manner over 176 °. 6. Roller blind according to one of claims 1 to 5, characterized in that the surface contour (66, 70) of the longitudinal field (60, 62) is composed of sections (66_a, 66_ {b}) with different radii of curvature (R, R1). 7. Roller blind according to claim 6, characterized in that in a middle section (66_) of the surface contour, in each case a section (66_b) of smaller curvature is connected to both sides. 8. Roller blind according to one of claims 1 to 7, characterized in that the maximum distance (n, n_ {1}) of a plane (K) determined through the comb line (64) or the lines of valley (68) with respect to the curved surface contour (66, 70) below one hundredth of the height of the sheets (h). 9. Roller blind according to one of claims 1 to 8, characterized in that the maximum distance (n, n_ {1}) of a plane (K) determined through the comb line (64) or the lines of valley (68) with respect to the curved surface structure (66, 70) is between 1% and 3% of the width (b, b1) of the longitudinal field (60, 62). 10. Roller blind according to claim 8 or 9, characterized by a distance (n, n1) between about 0.1 mm and 0.3 m in a longitudinal field (60, 62) of 10 mm to 11 mm wide (b, b1). 11. Roller blind according to one of claims 1 to 10, characterized in that the ratio of the width (b, b_ {1}) of the longitudinal field (60, 62) with respect to the maximum distance (n, n_ {1 }) of the plane (K) of the comb lines (64) or of the valley lines (68) of the curved surface contour (66, 70) is approximately 65 to 1. 12. Roller blind according to one of claims 1 to 11, characterized in that the visible surface (50) of the sheets (12) in the closed state of the roller blind (10) close together without interstitium. 13. Roller blind with a longitudinal side of the sheet / s in the form of a bearing shell of the channel type, which extends laterally from the surface of the roller blind as well as for the formation of a joint receives a longitudinal side, similar to a hook in the cross section, of the adjacent sheet, according to at least one of claims 1 to 12, characterized in that the bearing shell (34) has at its channel end (36) a seat (37) for a free edge (25) of the longitudinal side (14) of the hook type. 14. Roller blind according to claim 13, characterized in that the bearing shell (34) of the channel type has an otherwise straight channel arm (35) in the cross section as a stop for a straight hook rib (25 ) of the longitudinal side (14) of the hook type. 15. Roller blind according to at least one of claims 1 to 14, characterized in that a plastic profile (40) is provided between the two articulation pieces (14, 16), which form the articulation of the roller blind (18) ) in the form of a channel, which fits between the surfaces of the articulation pieces that are associated with each other. 16. Roller blind according to claim 15, characterized in that an arm (43) of the plastic profile (40) rests on a seat (37) of one of the articulation pieces (18) for an opposite part (25) of the other articulation piece (14). 17. Roller blind according to claim 15 or 16, characterized by an area (48) of the groove type on the outer surface of a tubular surface section (46), in the form of a partial circle in the cross section, of the profile of plastic (40) for a projecting slat (38) of the outer articulation piece (16) of the sheet (12).