ES2401790B5 - DEVICE FOR GUIDING A FABRIC - Google Patents

Abstract

Device for guiding a fabric, specially designed for use in retractable screens such as pleated anti-mosquito nets, comprising two rigid vertical elements facing each other, one of them fixed (2) and the other mobile (1) being able to slide the latter from an initial position in which it is in contact with the fixed element or close to said fixed element to a final position, moving away from the fixed element. The mechanism that allows the opening of the screen further comprises an upper flexible element (4) that is connected to the fixed part (2) and an intermediate flexible element (5) which in turn is connected to a lower flexible element (6) that joins with the fixed element (2). The mechanism is linear, which simplifies the assembly of the device. It also allows a simple adaptation to different sizes of holes to protect with the retractable screen.

Description

DEVICE FOR GUIDING A FABRIC

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The present invention is framed within the devices that allow guiding a fabric as a retractable screen. These are devices that allow the opening or closing of the panlalla.

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These devices must be easy to install to facilitate assembly operations. It is also necessary that they can be adapted to the measures of the hole that is intended to be protected with the retractable screen. It is convenient that its disassembly is also simple. STATE OF THE PREVIOUS TECHNIQUE

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Retractable screens, such as pleated anti-mosquito nets, are devices that allow extending a tissue by closing a gap, then allowing said tissue to be collected, remaining in the initial state. The fabric is arranged between two rigid elements, at least one of them being mobile.

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EP-1903175 discloses a pleated screen device comprising a fixed part and a moving part and the movement of the moving part is achieved by means of two chain guide pieces, one of them being larger than the other so that during the opening of the screen the moving part partially slides into that of larger dimensions.

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EP-1905944 also describes a pleated screen device comprising two guides sized so that they slide inside each other in the fixed part.

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Patent EP-0999335 is a device for screens and discloses links for chains that allow screen movement. These links are composed of a plurality of rigid connected units that have a pair of side walls. a crossbar portion and stopping means associated therewith which allow to maintain the rigidity of a chain portion removed from the mounting frame of the screen itself.

Other documents such as JP-2009-04694, EP-1688582 or JP-2002-339230 are also known from the state of the art of the present invention, which also refer to devices intended for use with retractable screens.

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One of the main disadvantages of these screens is the complicated thread mechanism necessary to keep the fixed and mobile part parallel to each other. This complication makes the mounting of the device more expensive and makes it difficult to adjust the height of the device once manufactured since if the device is cut it is necessary to readjust several mechanisms of the device. To avoid threads that connect to fixed points, these threads are replaced by chains so that the assembly of these devices is complicated and laborious, making it necessary to verify and adjust each device at the end of its assembly.

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EXPLANATION OF THE TNVENCTION The main objective of the present invention is to propose a device for guiding a fabric that will be applied to retractable screens with which to avoid the limitations of the previous devices.

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This device has a mounting and allows to adapt operations. new operating principle in a way that facilitates its dimensions without the need for large

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The mechanical elements necessary for the operation of the device are arranged in a linear manner, which simplifies assembly. The adjustment of the measurement of the device is achieved simply by cutting the device and resetting the system at a single point.

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The device comprises two rigid vertical elements facing each other, one of them being fixed and the other being mobile so that starting from an initial position in which both elements are in contact () very close to each other, the mobile element moves away from the fixed element. The mobile element is guided by a lower flexible element and an upper flexible element.

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The lower flexible element and the upper flexible element are connected at one end to the fixed element. Its other ends are respectively attached to the ends of an intermediate flexible element. This intermediate flexible element moves along two vertical rails inside the (~ Mobile element, which is a rigid and vertical element. When the intermediate flexible element moves, it makes the lower flexible element and the element follow in its movement flexible top that can also slide inside the vertical rails of the mobile element.

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In a preferred embodiment of the invention, the intermediate flexible element is of the same material as the upper flexible element.

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The intermediate flexible element circulates through the interior of the mobile element where it travels within the two vertical rails of said mobile element, which is rigid and vertical, passing from one rail to another at a turning point that is also located inside the mobile vertical rigid element. The two vertical rails located within the mobile element through which the intermediate flexible element circulates are shared for the collection of the upper flexible element and the lower flexible element.

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The upper flexible element and the intermediate flexible element are composed of one or several sheets of curved cross section. In a preferred embodiment of the invention they will be metallic and coated with an anti-corrosion layer.

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The lower flexible element may comprise a flat sheet and flexural limitation elements that allow the flat sheet to flex in one direction only, making it impossible in the opposite direction. In another embodiment of the invention, the lower flexible element may be a chain of rigid links. They are articulated with each other by horizontal axes.

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The presented device also allows to include auxiliary conductive guide wires for fabrics that require it. That is, it can, among others, assemble pleated fabrics that fold over themselves as an accordion, or fabrics on winding devices, which are collected in a winder when the device is closed. In addition to the above, the disassembly of the device for possible repairs and / or maintenance is simple.

When the moving element is in the initial position, that is, in contact or close to the

fixed element, the lower flexible element and the upper flexible element are collected

within the mobile element, each in its corresponding vertical lane. As

separates the mobile element from the fixed, the upper and lower flexible elements go

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being extracted from the mobile element. As the lower flexible element and the flexible element

upper are mechanically attached at one end to the flexible element

intermediate, the length of the lower flexible element removed is always equal to the length of

flexible upper element. The same happens when the flexible elements are retracted,

upper and lower, within the mobile element. This ensures the parallel movement of the

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vertical mobile element with respect to the fixed vertical element.

Throughout the description and claims the word "comprises" and its variants do not

They intend to exclude other technical characteristics, additives, components or steps. For the

experts in the field, other objects, advantages and characteristics of the invention will

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they will come partly from the description and partly from the practice of the invention. The

The following examples and drawings are provided by way of illustration, and are not intended to be

are limiting of the present invention. In addition, the present invention covers all

possible combinations of particular and preferred embodiments indicated herein.

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BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows the device of the invention in an exploded view.

FIG. 2 shows a functional scheme of the invention.

FIG. 3 shows a flexible upper element, consisting of a section sheet

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transverse curve, leaving the rigid vertical mobile element.

FIG. 4 shows a perspective view of a flexible element such as that of Figure 3.

FIG. 5 shows a sectional view of a flexible element.

FIG. 6 shows a side section of a lower flexible element composed of a

flat sheet and elements of limitation of flexion.

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FIG. 7 shows a perspective view of a lower flexible element composed of a

flat sheet and limitation elements of the fIE ~ xion.

FIG. 8 shows a sectioned perspective view of a lower flexible element such as the

shown in figure 6.

FIG_ 9 shows a flexure limiting element of a lower flexible element.

FIG. 10 shows a rigid articulated link of a lower flexible element formed by

rigid articulated links.

FIG. 11 shows a perspective view of a lower flexible element formed by

rigid articulated links.

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References:

1: Mobile vertical rigid element; 2: Fixed vertical rigid element; 3: Horizontal axis; 4: Element

flexible top; 5: Intermediate flexible element; 6: Bottom flexible element; 7: Pivot point;

8: Flat sheet; 9: Elements of limitation of flexion; 10: Link; 11: First lane

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vertical; 12: Second vertical lane; 13: First bump; 14: Second bulge,

15: First surface of the flexure limiting element; 16: Second surface of

bending limitation element; 17: Third surface of the flexure limiter element,

18: First link surface; 19: 5 second link surface, 20: Third surface

of the link; 21: Auxiliary thread; 22: First end of the auxiliary thread; 23: Second end of

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auxiliary thread; 24: Fourth surface of the flexure limiting element; 25: Fifth surface

of the bending limiter element; 26: Sixth surface of the flexure limiting element.

DETAILED EXHIBITION OF REALIZATION MODES

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The device for guiding a tissue proposed by the present invention comprises

two rigid vertical elements facing each other, of which one of them is a

fixed vertical rigid element (2) while the other is a mobile vertical rigid element (1)

that can slide from an initial position where it is in contact with the element

fixed (2) or close to said fixed vertical rigid element (2) to an end position, moving away

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of the fixed element (2), the mobile vertical rigid element (1) comprising two rails

vertical, which are a first vertical rail (1-1) and a second vertical rail (12), and being

guided in its sliding by a flexible upper element (4) and a flexible element

bottom (6) that slide along the two vertical rails (11, 12) of said rigid element

mobile vertical (1), and the upper flexible element (4) is connected by one of its ends

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to the fixed vertical rigid element (2) and at its other end, within a vertical rail (12) at a

end of the intermediate flexible element (Ei), the lower flexible element (6) being

connected by one of its ends to the fixed vertical rigid element (2) and the other end

free of the intermediate flexible element (5) such that a push-pull system is formed and said

intermediate flexible element (5) travels within the vertical rails (11, 12) turning

around a pivot point (7) that is comprised in the mobile vertical rigid element

(one) .

The joint between the upper flexible element (4) and the intermediate flexible element (5) is a

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adjustable type joint so that the distance to the end of the intermediate flexible element

(5) to which the end of the fle element is fixed) (upper ible (4) can be adjusted by a

screw, so that the parallelism between the mobile vertical rigid element can be adjusted

(1) and the fixed vertical rigid element (2). The joint between the end of the flexible element

intermediate (5) and the end of the lower flexible element (6) is a fixed joint.

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The joint between the upper flexible element (4) and the fixed vertical rigid element (2) is fixed in

a preferred embodiment of the invention. The joint between the lower flexible element (6) and the

fixed vertical rigid element (2) is also fixed in a preferred embodiment of the invention.

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When the mobile vertical rigid element (1) is in the initial position, that is in contact or

next to the fixed vertical rigid element (2), both the lower flexible element (6) and the

upper flexible element (4) will be collected mostly within the element

mobile vertical rigid (1), each in its corresponding vertical rail (11, 12). On going

separating the mobile vertical rigid element (1) from the fixed vertical rigid element (2),

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the flexible upper (4) and lower (6) elements are being extracted from the rigid element

mobile vertical (1). The length of the upper flexible element (4) removed is always equal to the

length extracted from lower flexible element (6), since both elements are

jointly attached to each of the two ends of the intermediate flexible element (5).

In the same way it happens when refolding the upper (4) and lower (6) flexible elements

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inside the mobile vertical rigid pertile (1). This ensures the parallel movement of the

mobile vertical rigid vertical element (1) relative to the fixed vertical rigid element (2).

The upper flexible element (4) is composed of one or more section sheets

cross curve. In a preferred embodiment of the invention in which there are several

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sheets, these are joined by its longitudinal central axis. This union can be the result

of spaced point joints or a continuous longitudinal joint. It must be taken in

Note that the type of joint should not impede the ability of the sheets to be flexed.

In an embodiment of the invention, the lower flexible element (6) is composed of a

flat sheet (8) and flexural limitation elements (9) that allow flexion of the

flat sheet (8) in one direction but prevent it in the opposite direction.

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The intermediate flexible element (5) can be a cable, a flexible section element

laminar or tubular, or a chain of links.

The flexural limitation elements (9) are placed consecutively under the

flat sheet (8) being fixed by a first protuberance (13) and a second

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protuberance (14) formed in the same flexure limiter element (9) so that

a regular chain is constituted on the flat sheet (8). The first bump (13)

prevents the separation of the flat sheet (8) from the flexure limiting element (9),

still allowing its flexion; the second protuberance (14) prevents slippage between the

flat sheet (8) and the flexure limiting element (9). The second bulge (14) is

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cylindrical Each flexure limiting element (9) has a first surface of the element

flexure limiter (15), a second surface of the flexure limiter element (16) and

a third surface of the flexure limiting element (17) that limits the rotation of each

element (9) with respect to the previous one in all: the senses except in one. The second

surface of the bending limiter element (16) and the third surface of the element

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flexure limiter (17), are vertical and have a fifth surface of the limiting element

of the flexion (25) and a sixth surface of the flexure limiting element (26) which are

vertical, and prevent the limited elements of the flexion (9) from moving between them

horizontally, or rotate with respect to the vertical or longitudinal axis. The first surface of

bending limiter element (15) and the fifth surface of the bending limitation element

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(25) And prevent the limitation elements of the flexion (9) from rotating with respect to the axis

transverse down, but allow upward rotation.

In another possible embodiment of the invention, the lower flexible element (6) is formed by

a chain of rigid links (10) articulated with each other by horizontal axes (3).

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In addition each element of the link chain (10) has a first surface of the

link (18), a second link surface (19) and a third link surface

(20) that together with the horizontal axis (3) limit the rotation of each element (10) with respect to the previous one

in every way except one.

The device of the present invention allows to include in one of its embodiments auxiliary threads (21) that are connected by one of its ends, a first end of the auxiliary wire

(22) to the fixed vertical rigid element (2) and on the other to the other end, a second end of the auxiliary wire (23) of the intermediate flexible element (5) in which the element is connected

5 flexible top (4). These auxiliary threads (21) serve as a guide when using pleated fabric fabrics that fold over themselves as an accordion or fabrics on winding devices that are collected in a reel when the device is closed. The joint between the auxiliary threads (21) and the fixed vertical rigid element (2) can be rigid, elastic or rigid adjustable.

Claims (9)

one.

Device for guiding a fabric comprising two rigid vertical elements facing each other, of which one of them is a fixed element (2) while the other is a mobile vertical rigid element (1) that can slide from one position initial in which it is in contact with the fixed vertical rigid element (2) or next to said fixed vertical rigid element (2) to a final position, moving away from the fixed vertical rigid element (2), the mobile vertical rigid element comprising (1) ) two vertical rails (11, 12) And being guided in its slide by an upper flexible element (4) and a lower flexible element (6) that fold back when the device is closed, sliding along the two vertical rails (11, 12) said mobile vertical rigid element (1), the upper flexible element (4) being connected at one of its ends to the fixed vertical rigid element (2) and the lower flexible element (6) being connected by one of its ends at the end of the fixed vertical rigid element (2), the upper flexible element (4) and the lower flexible element (6) being connected, at their other ends, to an intermediate flexible element (5) such that said elements flexible upper (4) and lower (6) push or pull said intermediate flexible element (5), which moves along the vertical rails (11, 12) rotating around a pivot point (7) that is comprised in the element mobile vertical rigid (1), characterized in that the upper flexible element (4) and the lower flexible element (6) are connected, at their other ends, to the ends of the intermediate flexible element (5) and that the upper flexible element (4) is composed of at least one sheet of curved cross section.

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Device for guiding a fabric comprising two rigid vertical elements facing each other, of which one of them is a fixed element (2) while the other is a mobile vertical rigid element (1) that can slide from one position initial in which it is in contact with the fixed vertical rigid element (2) or next to said fixed vertical rigid element (2) to a final position, moving away from the fixed vertical rigid element (2), the mobile vertical rigid element comprising (1) ) two vertical rails (11, 12) And being guided in its slide by an upper flexible element (4) and a lower flexible element (6) that fold back when the device is closed, sliding along the two vertical rails (11, 12) said mobile vertical rigid element (1), the upper flexible element (4) being connected at one of its ends to the fixed vertical rigid element (2) and the lower flexible element (6) being connected by one of its ends to the end of the rigid element

fixed vertical (2), the upper flexible element (4) and the lower flexible element (6) being connected, at its other ends, to an intermediate flexible element (5) such that said upper (4) and lower flexible elements (6) push or pull said intermediate flexible element (5), which moves along the vertical rails (11, 12) rotating around a pivot point (7) that is comprised in the mobile vertical rigid element (1), characterized in that the upper flexible element (4) and the lower flexible element (6) are connected, at their other ends, to the ends of the intermediate flexible element (5) and that the intermediate flexible element (5) is connected so adjustable to the upper flexible element (4) and is fixedly attached to the lower flexible element (6). 3. Device for guiding a fabric comprising two rigid vertical elements facing each other, of which one of them is a fixed element (2) while the other is a mobile vertical rigid element (1) that can slide from an initial position in which it is in contact with the fixed vertical rigid element (2) or close to said fixed vertical rigid element (2) to a final position, moving away from the fixed vertical rigid element (2), the mobile vertical rigid element comprising (1) two vertical rails (11, 12) And being guided in its slide by an upper flexible element (4) and a lower flexible element (6) that fold back when the device is closed, sliding along the two vertical rails (11, 12) of said mobile vertical rigid element (1), the upper flexible element (4) being connected by one of its ends to the fixed vertical rigid element (2) and the lower flexible element (6) being connected by one of its s ends at the end of the fixed vertical rigid element (2), the upper flexible element (4) and the lower flexible element (6) being connected, at their other ends, to an intermediate flexible element (5) such that said elements flexible upper (4) and lower (6) push or pull said intermediate flexible element (5), which moves along the vertical rails (11, 12) rotating around a pivot point (7) that is comprised in the element mobile vertical rigid (1), characterized in that the upper flexible element (4) and the lower flexible element (6) are connected, at their other ends, to the ends of the intermediate flexible element (5) and that the upper flexible element (4) is formed by a chain of rigid links (10) articulated with each other by horizontal axes (3). 4. Device for guiding a fabric comprising two rigid vertical elements facing each other, of which one of them is a fixed element (2) while the other is a mobile vertical rigid element (1) that can slide from an initial position in which it is in contact with the fixed vertical rigid element (2) or close to said fixed vertical rigid element (2) to a final position, moving away from the fixed vertical rigid element (2), the mobile vertical rigid element comprising (1) two vertical rails (11, 12) And being guided in its slide by an upper flexible element (4) and a lower flexible element (6) that fold back when the device is closed, sliding along the two vertical rails (11, 12) of said mobile vertical rigid element (1), the upper flexible element (4) being connected at one of its ends to the fixed vertical rigid element (2) and the lower flexible element (6) being connected by one of its ends at the end of the fixed vertical rigid element (2), the upper flexible element (4) and the lower flexible element (6) being connected, at their other ends, to an intermediate flexible element (5) such that said elements flexible upper (4) and lower (6) push or pull said intermediate flexible element (5), which moves along the vertical rails (11, 12) rotating around a pivot point (7) that is comprised in the element mobile vertical rigid (1), characterized in that the upper flexible element (4) and the lower flexible element (6) are connected, at their other ends, to the ends of the intermediate flexible element (5) and that it includes auxiliary threads ( 21) which are connected at one end to the fixed vertical rigid element (2) and at the other end to the intermediate flexible element (5) in which the upper flexible element (4) is connected 5. Device according to the preceding claim, wherein the connection between the auxiliary threads (21) And the fixed vertical rigid element (2) can be rigid, elastic or rigid adjustable. 6. Device for guiding a fabric comprising two rigid vertical elements facing each other, of which one of them is a fixed element (2) while the other is a mobile vertical rigid element (1) that can slide from an initial position in which it is in contact with the fixed vertical rigid element (2) or close to said fixed vertical rigid element (2) to a final position, moving away from the fixed vertical rigid element (2), the mobile vertical rigid element comprising (1) two vertical rails (11, 12) And being guided in its slide by an upper flexible element (4) and a lower flexible element (6) that fold back when the device is closed, sliding along the two vertical rails (11, 12) of said mobile vertical rigid element (1), the upper flexible element (4) being connected at one of its ends to the fixed vertical rigid element (2) and the lower flexible element (6) being connected by one of its ends at the end of the fixed vertical rigid element (2), the upper flexible element (4) and the lower flexible element (6) being connected, at its other ends, to an intermediate flexible element (5) such that said upper (4) and lower (6) flexible elements push or pull said intermediate flexible element (5), which moves along the vertical rails (11, 12) rotating around a pivot point (7) which is comprised in the mobile vertical rigid element (1), 5 characterized in that the upper flexible element (4) and the lower flexible element (6) are connected, at its other ends, at the ends of the intermediate flexible element (5) and because when the mobile vertical rigid element (1) is in the initial position, the upper flexible element (4) is inside a second vertical rail (12) of the mobile vertical rigid element (1) as well as the lower flexible element (6) is inside the first vertical rail (11) 10 of the mobile vertical rigid element (1). Device according to any one of the preceding claims, wherein the lower flexible element (6) comprises a flat sheet (8) and flexural limitation elements. (9) configured to allow flexion of the flat sheet (8) in one direction and prevent said flexion in the opposite direction. Device according to any one of the preceding claims, wherein the lower flexible element (6) is formed by a chain of rigid links (10) articulated with each other by horizontal axes (3). 9. Device according to any of the preceding claims, wherein the joint between the upper flexible element (4) and the fixed vertical rigid element (2) can be rigid, elastic or rigid adjustable.