WO2010043727A1

WO2010043727A1 - Guiding mechanism for curtains and blinds

Info

Publication number: WO2010043727A1
Application number: PCT/ES2008/070188
Authority: WO
Inventors: Emiliano GARCÍA GARCÍA
Original assignee: Bandalux Industrial, S.A.
Priority date: 2008-10-17
Filing date: 2008-10-17
Publication date: 2010-04-22

Abstract

Guiding mechanism for curtains and blinds. It comprises a longitudinal casing (1), lateral guides, a blind curtain (2) arranged partially inside the lateral guides with narrow zones, a revolving drum (3) with its actuating means (18), and a bottom bar joined to the bottom perimeter of the blind curtain (2), characterized in that it comprises tongues (9) or extensions of the blind curtain (2) which are arranged along the lateral edge (8) of the blind curtain (2), defining spaces or concavities (10) between one tongue (9) or extension and the immediately adjacent one, and fixing studs or follower elements (6) arranged in the tongues (9) or extensions, said fixing studs or follower elements (6) being situated inside the lateral guides over which they pass, having a size greater than the narrow zone of the lateral guides.

Description

GUIDING MECHANISM FOR CURTAINS AND SHELVES

Guiding mechanism for curtains and blinds, of the type comprising a longitudinal box, lateral guides, a curtain or blinds partially arranged inside the lateral guides with narrowings, a rotating drum with its actuating means, and a lower bar attached to the lower perimeter of the curtain or blind, and because it comprises: tongues or extensions of the curtain or blind, arranged along the lateral perimeter of the curtain or blind, defining spaces or concavities between a tongue or extension and the immediately next, and some rivets or follower elements arranged in the tabs or extensions, which said rivets or follower elements are located inside the lateral guides on which they run, with a thickness greater than the narrowing of the lateral guides.

BACKGROUND OF THE INVENTION

The inventor is known in the sector of curtains and blinds as a great innovator. Within that line of improvement, this patent refers to a guiding mechanism for curtains and blinds.

Thus, Spanish Patent No. 8901595 (ES2014087), "Blind", of the year 1989, is known in the name of D. Seizo HAYASHIGUCHI, which refers to a blind comprising a frame, a box in the upper part of the frame, a drum mounted in the box, a cover sheet wrapped around the drum and having a strip or fastener attached to each of its opposite side edges and held in position by rails mounted on a pair of vertical uprights. The rails are mounted on a pair of vertical uprights. The rails are mounted loosely and pushed by damping parts towards the uprights. The fastener is a half of a machine-sewn or heat-welded zipper to the blind. This substantially increases the service life of the blind. Application to mesh fabric windows and to close ventilation openings, hospital food service car openings or cover box openings for computer protection. The British Patent is also known in the state of the art

GB1442139, of the year 1972, on behalf of NYLEX CORPORATION LIMITED, which refers to a tent comprising a flexible hollow structure inflatable by pressurized gas to lift the walls of the tent. Said patent defines a winding system of the cover or cover, which acts as a blind. The structure comprises a pair of end walls, an outer perimeter wall, central openings in the final walls, and an inner perimeter wall that defines a central ventilation passage. The structure also includes a cover or cover to adjust the area of the ventilation passage. The vertical edges of the cover or cover are fastened to the wall of the structure by a pair of zippers. A roller embedded in the lower edge of the cover or cover and some ropes allow the unbuttoned part of the cover or cover to be rolled up. Each final wall includes a gas inlet and a gas outlet. The structure is inflated by the compressed air that is introduced by the inlet.

BRIEF DESCRIPTION OF THE INVENTION

The present invention is an improvement in the sector of curtains and blinds.

In this patent the inventor goes a step further in the idea of offering a product of the highest quality, without errors or failures in operation and with an easy mechanics for its assembly.

Thus, it has developed a mechanism that includes some lateral guides and that when rolled up prevents bulging inside the box. Until now, when a curtain was rolled, it was malformed and wrinkled, especially if I spent some time in Ia coiled position The problem came when unrolling it because these malformations or wrinkles did not disappear and visually the curtain was not perfect.

Usually, the mechanisms incorporating lateral guides have a guiding element. Said guiding element is a problem when the curtain or blind is wound, as indicated in the previous paragraph. The solutions go through two winding modes.

A first one in which some lateral plates are arranged when being rolled up on top of each other, which is a work of mathematics to make said plates coincide with each other. Another problem is that the box must be very large because the plates when overlapping and being thicker than the curtain itself or blinds, increase the necessary space inside the box.

The second option is to eliminate the plates and not make them coincide, but this causes that when contacting a plate, of the upper rolled layer with the fabric of the lower rolled layer, the mark and wrinkle, affecting the eye when it is unwound.

Thus, the inventor has tried to solve, with the same invention, the two problems mentioned above. The present invention combines the two positive effects of the above solutions, that is, it does not wrinkle or malform the blind or the curtain, and on the other hand it does not need to increase the volume of the box.

This is achieved through the use of rivets or follower elements, arranged in a predetermined manner longitudinally along the lateral perimeter, by cutting the curtain or blind existing between a rivet or follower element and the next, defining concavities.

Thus, when winding, the rivets or follower elements do not coincide, so it does not bulge, and on the other hand said rivets or follower elements do not wrinkle any part of the curtain or blind, since when they are rolled they always coincide with a part cropped, so they do not affect the curtain or blind. It is an object of the present invention a guiding mechanism for curtains and blinds, of the type comprising a longitudinal box, lateral guides, a curtain or blind arranged partially inside the lateral guides with narrowings, a rotating drum with its actuation means, and a lower bar attached to the lower perimeter of the curtain or blind, characterized in that it comprises: tabs or extensions of the curtain or blind, arranged along the lateral perimeter of the curtain or blind, defining spaces or concavities between a tongue or extension and the immediately following, and some rivets or follower elements arranged in the tabs or extensions, which said rivets or follower elements are located inside the lateral guides on which they run, with a thickness greater than the narrowing of the side guides.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to facilitate the explanation, four sheets of drawings are attached to the present report in which a practical case of embodiment has been represented, which is cited by way of example, not limiting the scope of the present invention:

- Figure 1 is a front view of the object of the present invention.

- Figure 2 is a sectional section of one of the lateral guides along the M-Il line of Figure 1.

- Figure 3 is a view of the system that drives the invention, and

- Figure 4 is a detail of the adapter.

CONCRETE REALIZATION OF THIS INVENTION Thus, in Figure 1 a longitudinal box 1, a curtain or blind 2 that defines its lateral perimeter 8 and its lower perimeter 7, lateral guides 4, and a lower bar 5 is illustrated.

Figure 2 shows the curtain or blind 2, the lateral guide 4 formed by a profile 21, a rivet or follower element 6, a tongue or extension 9, a funnel 14, a narrowing 12 and a mat 13.

Figure 3 shows the longitudinal box 1, the curtain or blind 2 with its lateral perimeter 8, a rotating drum 3 with its actuating means 18, the tabs or extensions 9 with its space or concavity 10, the rivets or follower elements 6 and an adapter

fifteen.

In Figure 4 the adapter 15 has been drawn with the first ramps 16 and the second ramps 17. Thus, in a specific embodiment, in this case it will be a curtain 2 with rivets 6 located on tabs 9 that form concavities 10.

Thus, the present mechanism, in the initial position, is as shown in Fig. 1, that is to say with a longitudinal box 1, a curtain or blind 2 defining its lateral perimeter 8 and its lower perimeter 7, lateral guides 4, and a bottom bar 5.

When the user decides to raise or roll the curtain 2, (Fig. 3) I will do it as follows. It will start the drum drive means 18 (either manually or electrically) and they rotate the rotating drum 3 that winds the curtain 2.

The curtain has tabs 9 arranged along the lateral perimeter 8 of the curtain 2. Said tabs define spaces or concavities 10 between a tongue 9 and the immediately following. A rivet 6 is provided on each of said tongues 9.

These rivets 6 are located inside the lateral guides 4 (Fig. 2) on which they run. To prevent them from leaving inside of the lateral guides 4, the rivets 6 have a thickness greater than the space that defines the narrowing 12 of the lateral guides 4, such that the rivets 6 cannot exit through the narrowing 12.

As shown in Fig. 3 as the curtain 2 is wound in the rotating drum 3, said curtain 2 is arranged in layers, such that the concavities 10 of the upper layer coincide with the tabs 9 and rivets 6 of the lower layer.

Thus, in this way, the curtain is prevented from having malformations in the tissue thereof and there are no lumps and wrinkles are formed, as detailed in greater detail in the BRIEF DESCRIPTION OF THE PRESENT INVENTION.

Additionally, as shown in Fig. 2, it can be provided that the lateral guides 4 are formed by a profile 21, since said profile favors and allows a simpler manufacture of the lateral guides.

In said profile 21, some mats 13 can be arranged inside, facing the curtain 2. This has two advantages:

A first advantage is that the hidden part of the curtain 2 is lightly isolated, since said mats 13 are part of measures that prevent the passage of light into the profile 21. Thus, to insulate lightly, the curtain 2 is sized appropriately so that it is located by its lateral perimeter 8 inside the lateral guides 4. In addition, the rivets 6 prevent the curtain 2 from escaping inside the profile 21. And finally, the incorporation of Closing pieces such as the door mat 13 and the funnel 14 completely isolate said lateral perimeter 8 from the curtain from the light.

And a second advantage is that it prevents dust from entering the profile 21 towards the rivets 6 and therefore the rotating drum 3. One of the ways to configure the narrowing 12, to prevent the rivets 6 from escaping from the inside the lateral guide 4, is that the profile 21 comprises a configuration in the form of funnel 14 at the end of which the aforementioned narrowing 12 is located, thus adopting said funnel configuration 14 ensures that even if there were pulls on the curtain 2, the rivets 6 can never leave the inside of the profile 21. To connect the longitudinal box 1 and the lateral guides 4 the arrangement of an adapter 15 (Fig. 4) is provided, which comprises first ramps 16, facing each other, that guide the curtain 2 on the mats 13 and second ramps 17 that guide the rivets 6 towards the narrowing 12 of the funnel 14, both in the winding or raising operations of the curtain 2 and of unrolling or lowering the curtain 2.

This adapter on the one hand facilitates that the rivets 6 are properly arranged in the rotating drum 3, as explained above, and that later when the curtain 2 is lowered, that said rivets are housed beyond the funnel 14, of such so that they cannot leave inside the profile 21.

To facilitate the guidance of the rivets towards the inside of the profile 21 the second ramps 17 are inclined with respect to the first ramps 16, said inclination being an extension of the funnel 14. The present invention patent describes a new guiding mechanism for curtains and blinds The examples mentioned herein are not limiting of the present invention, therefore it may have different applications and / or adaptations, all of them within the scope of the following claims.

Claims

1.- Guidance mechanism for curtains and blinds, of the type comprising a longitudinal box (1), lateral guides (4), a curtain or blind (2) partially arranged inside the lateral guides (4) with narrowings (12), a rotating drum (3) with its drive means (18), and a lower bar (5) attached to the lower perimeter (7) of the curtain or blind (2), characterized in that it comprises:

- tabs (9) or extensions of the curtain or blind (2), arranged along the lateral perimeter (8) of the curtain or blind (2), defining spaces or concavities (10) between a tongue (9) or extension and Ia immediately following, and

- rivets or follower elements (6) arranged in the tabs (9) or extensions, which said rivets or follower elements (6) are placed inside the lateral guides (4) on which they run, with a thickness greater than narrowing (12) of the lateral guides (4).

2. Mechanism, according to claim 1, characterized in that the lateral guides (4) are formed by a profile (21) comprising in its interior some mats (13), facing the curtain or blind (2).

3. Mechanism, according to claim 2, characterized in that said profile (21) comprises a funnel (14) at the end of which said narrowing (12) is located.

4. Mechanism, according to claim 3, characterized in that an adapter (15) is arranged between the longitudinal box (1) and the lateral guides (4), which comprises first ramps (16) facing each other, that guide the curtain or blind (2) on the mats (13) and second ramps (17) that guide the rivets or follower elements (6) towards the narrowing (12) of the funnel (14).

5. Mechanism, according to claim 4, characterized in that the second ramps (17) are inclined with respect to the first ramps (16).