WO2010020704A1 - Slatted blind - Google Patents

Abstract

The present invention relates to a slatted blind that, unlike blinds known in the prior art, has the slats connected only by the ends thereof. The method of connection between the slats makes it possible, when the blind is raised, for there to be gaps between the slats for the purpose of ventilation. The same method of connection between slats establishes, at the bottom, a blocking method for preventing the blind being raised from the outside in an unauthorized manner.

Description

 BLIND PERSIAN

DESCRIPTION

OBJECT OF THE INVENTION

The present invention relates to a louver blind which, unlike the blinds known in the state of the art, has louvers only linked through their ends. The way of linking between the slats allows the window to appear vain between the slats for efficient aeration.

The same way of linking between slats inferiorly establishes a blocking mode to avoid raising the blind fraudulently from the outside.

BACKGROUND OF THE INVENTION

The louvers of known slats allow the passage of air when they rise slightly. The air passage is achieved by means of linkage between slats because said slats are configured according to a link that allows a play between the two.

When raising the blind slightly, there is a distance between slats until the bond they support makes support. In this distancing, a section of the slat that allows the connection that is perforated is left accessible.

It is important to allow the passage of air without raising the blind until it is removed because this is still a protective barrier and at the same time it is allowed ventilate the room or space that is protected by the blind.

The need for greater ventilation in known solutions of the prior art is only possible with larger perforations but the connection between blades must always be maintained since the perforations are in the means of linking between consecutive slats.

The present invention changes the way of linking between slats to improve aeration capacity.

DESCRIPTION OF THE INVENTION

The present invention consists of a louver blind comprising at least two slats whose connection is established at the ends of each slat. This connection is carried out by means of a link piece that links them so that, in the closed position, the slats are arranged adjacent and in contact closing the space between both slats; and, in the open position, the link piece establishes a separation distance between slats such that there is a gap between the ends of the slats.

With this solution, the linkage between slats is located in the area of the guides and the area of the blind cloth where ventilation can occur is left free. The ventilation that is obtained is maximum since the linkage between slats in all this central area is eliminated.

If it is possible to carry out specific reinforcement links when the length of the plank is high. In this case the span generated between slats will be discontinuous.

The different embodiments resulting from combining dependent claims 2 to 7 are considered included by reference in this description.

DESCRIPTION OF THE DRAWINGS

The present specification is complemented, with a set of drawings, illustrative of the preferred example and never limiting of the invention.

Figure 1 shows an example of elevation as the user usually has visual access to a blind in operating mode.

Figure 2 is an elevation of the section at the ends of the blind where the parts involved in the linkage in the locked position are shown.

Figure 3 is a view of the previous embodiment example showing the use of a weatherstrip between slats integral to the upper slat.

Figure 4 is a view of the previous embodiment example showing the use of a weatherstrip between the slats integral with the lower slat.

PREFERRED EMBODIMENT OF THE INVENTION

An exemplary embodiment of the invention is shown in FIG. 1, where, schematically, two lateral guides (1) are shown between which the blinds are discussed. - TO -

The blind is formed by a plurality of slats (2) that are linked only at the ends by means of a link piece (3).

The first slat (2) is pulling the cloth to keep the slats (2) apart. The traction results in a distance that generates spans (V) between slats (2) that are what allow aeration.

The linkage between slats (2) is achieved by the incorporation of an intermediate link piece (3) that is located at the ends of the slats (2).

Figure 2 shows an example of the link piece (3). This link piece (3), in this exemplary embodiment, maintains an articulated joint through a coupling (2.5, 3.1) articulated with the lower blade (2). This same link piece (3), in its upper part, extends like a hook (3.2) stretched in such a way that it is housed inside a cavity (2.3) of the upper blade (2).

This cavity (2.3) of the upper slat (2) has a lower retention boss (2.4) responsible for the mutual retention, avoiding the exit of the hook (3.2).

The elongated configuration of the cavity section (2.3) together with the elongated configuration of the hook (3.2) results in a vertical play between both pieces. In the face of traction, the upper blade (2) distances itself from the lower blade (2) thanks to the distance it requires on a hook (3.2) until the retaining shoulder (2.4) is reached.

On the contrary, when closing the blind, the more (2) consecutive ones get closer thanks to the fact that the hook (3.2) of the connecting piece (3) is completely housed in the cavity (2.3) of the upper blade (2).

The presence of the link piece (3) means that there is no contact between slats (2) when they are in the closed position. To avoid the presence of grooves in the opening (V) by this minimum distance in the closed position, it is possible to incorporate a weatherstrip (4) located in one of the slats (2), either the upper one or the lower one, and that makes contact in the adjacent strip (2). Figures 3 and 4 are two examples of weatherstripping (4). Another possibility is to dispense with the weatherstrip (4) and it is the configuration of the slat (2) that changes along its length: in the end it allows the presence of an intermediate piece, and in the intermediate part the section is more long to allow closing.

Figure 2 shows a special configuration of the connecting piece (3) and the slats (2) that give rise to a safety interlock to prevent fraudulently raising the blind by pushing up the lower slat (2) instead of applying a traction on the upper strip (2).

This configuration consists of incorporating two projections (2.1, 2.2) in the slats (2), a lower projection (2.1) in the lower zone of the slat (2) that is above the link piece (3) and, a Highlight (2.2) in the upper part of the slat (2) below the link piece (3).

The elevation of the lower blade (2) forces the link piece (3) to lodge internally in the cavity (2.3), at least its hook (3.2). Lama (2) su- Perior supports a recess (3.3) located at the root of the link piece (3) so that the relative positioning is fixed. This support together with the articulation given by the articulated coupling (2.5, 3.1) results in a rotation of the piece (3). This rotation projects the lower part of the upper plank (2) against the guide (1) and projects the upper part of the lower plank (2) against the opposite side of the guide (1). The projections are in opposition to the main plane of the blind cloth.

Additionally, the support of the upper blade (2) in the recess (3.3) located at the root of the link piece (3) ensures the relative position between the slats (2). This mutual retention mode allows the blind to stabilize and avoid vibrations, for example due to wind or fluctuations.

The supports against the guides are produced only in the slats (2) and is carried out through projections (2.1, 2.2) destined to this function producing the interlocking.

This same configuration of the section of the intermediate piece (3) can be used in any linkage between slats (2) even if they do not require an interlocking function.

In Figure 1, and also by way of example only, an additional point connection is incorporated through a link piece (3) located in an intermediate area of the cloth applicable to slats (2) of great length.

Both the slats (2) and the weather strips (4), can be manufactured in transparent materials. With this option, the closed blind allows the passage of light.

Claims

I ^a .- Slat blind characterized by comprising at least two slats (2) whose connection is established at the ends of each slat (2) by means of a connecting piece (3) that links them so that, in the closed position, the slats (2) are arranged adjacent and in contact closing the space between both slats (2); and, in the open position, the link piece (3) establishes a separation distance between slats (2) such that there is a gap (V) between the ends of the slats (2). 2 .- blind according to claim 1 character- curly because there are specific links connecting slats (2) consecutive reinforcement resulting in a vain (V) discontinuous. 3 .- blind according to claim 1 character- curly that the part (3) closing links two slats (2) consecutive by an articulated coupling (2.5, 3.1) with a slat (2) and by a section with section in the form of a hook (3.2) with the other blade (2), where this second blade (2) has a cavity (2.3) for the hook (3.2) and a retention shoulder (2.4) also for the hook (3.2) that prevents its (3.2) exit from the cavity (2.3); in such a way that the hook section (3.2) has the necessary play to allow spacing between slats (2). 4 .- blind according to claim 3 caracterizad because the slats (2) consecutive linked at the bottom of the blind have projections (2.2, 2.1) arranged oppositely on either side of the guide (1) according to the plane main of the blind cloth, in such a way that before a lifting impulse from the lower slat (2), the combination of the two slats (2) together with the link piece (3), an interlocking block is established by the projections of the slats (2) in the guide (1). 5 .- blind according to claim 4 characterized in that the locking is facilitated because the root of the hook there is a recess (3.3), according to the cross - sectional configuration which will admin- support the lower end of the slat (2 ) that has the cavity (2.3) that houses the hook (3.2). 6 .- blind according to claim 1 wherein either the slat (2) in its upper part has a collar (4) to improve the closure of the blade support (2) disposed above; or the blade (2) in its lower part has a weatherstrip (4) to improve the closure by the support in the blade (2) arranged lower. 7. ^A blind according to claim 1 characterized in that the configuration of the slat (2) changes along its length, at the end it has a section that allows the presence of an intermediate piece (3), and in the intermediate part the section is longer to allow closing between consecutive slats (2) in the operative position of closing the blind. 8 .- blind according to claim 1 or 6 racterizada ca- because the blade (2), the seal (4) or both (2, 4) are made of transparent material.