ES1072795U - Horizontal displacement device for superimposed curtains - Google Patents

Abstract

1. Horizontal displacement device for superimposed curtains, in particular curtains (16, 17) that extend vertically occupying opposite positions, the surfaces of which are divided into stripes (16a, 16b; 17a, 17b) which are also vertical and which alternately have different degrees of transparency , capable of making a graduation of the light that penetrates from the outside to regulate the levels of interior lighting with a view to achieving what is known as the "night and day" effect, the device being mounted in a gallery (1) suitably adapted to the needs of the installation, characterized in that it comprises a first roller (4) extended between the side covers (2, 3) of the gallery and capable of turning around its longitudinal axis, from which one (17) of the curtains, and a formation of second rollers, based on two concentric rollers (5, 6) of different lengths, parallel to the first roller (4), of which the internal concentric roller (5) is also extended between both lateral covers (2, 3) and the other external concentric roller (6), capable of supporting the other curtain (16), is susceptible to displacement horizontal along the first concentric roller (5) in an amount of travel equivalent to the difference in length between the two, this concentric roller formation (5, 6) being capable of common rotation with respect to its longitudinal axis and simultaneously with said first roller (4). 2. Device according to claim 1, characterized in that said external concentric roller (6) is supported at its ends by respective supports (7) also horizontally movable by fitting their upper portion on a guide formed internally in the upper wall (1a) from the gallery itself (1) in which the device is incorporated. 3. Device according to claims 1 and 2, characterized in that said upper wall (1a) of the gallery (1) also includes two other housings in relation to its upper wall (1st), on both sides of said guide, intended to house the respective round-trip sections of a rope (9) that has one of its branches attached to both supports (7) and that accesses the exterior through one of the end covers (3) of the gallery (1), to facilitate the horizontal displacement action of said external concentric roller (6) with respect to the internal concentric roller (5). Device according to one or more of claims 1 to 3, characterized in that the rope exit end cap (3) (9) has a pair of vertical and parallel windows (11), each of which houses in its Inside is a vertical grooved pulley (12), in whose respective grooves the two branches of the rope (9) are housed, while the cover (2) at the opposite end of the gallery (1) includes a horizontal window (13) that It also houses a pair of grooved pulleys (14), also horizontal, through whose throats the rope (9) also passes as a return. Device according to one or more of the preceding claims, characterized in that the drag between both concentric rollers (5, 6) as regards the rotation of the same with respect to their common longitudinal axis, is ensured by means of opposite longitudinal keys (8) made in the internal concentric roller (5), in combination with a bearing bushing associated to each of the ends of the external concentric roller (6). Device according to one or more of the preceding claims, characterized in that the simultaneous rotational movement of the rollers (4, 5-6) for the height positioning of both curtains (16, 17), is carried out with the help of a conventional chain (15) that acts on the first roller (4) and that by means of gears located inside the end cover (3), transfers said rotational movement to both concentric rollers (5, 6).

Description

Horizontal displacement device for overlapping curtains.

Object of the invention

The present invention relates to a horizontal displacement device for overlapping curtains, which provides essential novelty features and notable advantages with respect to the means known and used for them purposes in the current state of the art.

More particularly, the invention proposes the realization of a device specially designed for application to double overlapping curtain installations, faced frontally, for the relative displacement of one of them horizontally with respect to the other with a view to one regulation of the confrontation between zones, bands or bands default verticals of both curtains that alternate with different degrees of transparency, with a view to controlling the amount of light that penetrates from the outside, and with it the level of illumination of the interior space in which they are installed the curtains suspended in the device.

The scope of the invention is is included within the industrial sector dedicated to the installation of curtains in general, and adjustable curtains in particular.

Background and summary of the invention

It is widely known in the current state of the technique, the existence of double curtain installations, planned to get what is usually called erect "night and day", that is, a regulation at the will of a major or lower level of lighting reached in an interior space at from the light that penetrates from one or more windows Exterior. These facilities simply consist of sets that include two separate, separate curtains, suspended from the upper gallery with the possibility of height adjustment according to it is usual, in which horizontal bands or bands have formed on the fabric of each of these curtains, so that these bands are made so that, alternatively, they present higher transparency and lower transparency. The regulation of the level of light that penetrates from the inside is achieved regulating one of the curtains in height with respect to the other, by acting on the ropes or chains that hang normally from one side of the gallery set, so that there is a gradually variable confrontation between the fringes horizontals of greater or lesser transparency. So when they are facing each other the respective bands of minor and major transparency of each of the curtains, a greater step is allowed of light through the pairs of bands of greater transparency, and with it a greater level of illumination of the interior space, while when facing a more transparent band of each one of the curtains with a less transparent band from the other, this less transparent band lets in a minimum level of light, and this achieves the lowest internal lighting level possible. Of course, any position can be allowed intermediate and with it a variable level of illumination between a maximum and minimum. This variation in lighting levels internal is what has given rise to the denomination of "night and day "applicable to this type of curtains.

Although current devices have resolved favorably the desired night and day effect as explained above, the horizontal layout of the strips of different transparency and the need to incorporate different mechanisms for the adjustable movement of each of the curtains, has revealed some drawbacks of practical realization that would be desirable to solve.

Therefore, taking into account the above, the This invention has been proposed as the main objective of implementation of a device for installation of doubles curtains, intended to achieve the aforementioned effect of "night and day ", to improve the current mechanisms and resolve favorably the disadvantages of the current technique. This goal has been fully reached by the device that is going to be object of description in the following, whose characteristics essentials are collected in the characterizing portion of the attached claim 1.

For this purpose, the device proposed by the invention allows, like conventional devices, raise or lower the curtains to the desired height, but this movement of ascent and descent of both curtains is made of simultaneously, and also, the alternative bands of different transparency appear formed in the fabrics of both curtains in vertical direction, so that the greater or lesser confrontation between them for the purpose of regulating the amount of light incoming in the protected space, only achieved by moving one curtain with respect to the other in horizontal direction. For it, the fabric of one of the curtains is suspended from a roller horizontal that allows a rotation around its longitudinal axis, thereby causing the rise / fall of the fabric of that curtain as conventional, while laughing at the other curtain is suspended from a roller that is concentric with another roller horizontal, parallel with that of the first curtain, so that the Internal roller is logically smaller in diameter than the external roller but of greater length, such that the external roller bearing the fabric, can be moved longitudinally along the roller internal in a path equivalent to the difference in length between both concentric rollers, the length of this being travel approximately equivalent to the width of any one of the vertical stripes formed in the fabrics of both curtains. That way you can regulate the confrontation relationship between stripes in a positional range ranging from complete overlap between more transparent and less transparent stripes respectively until complete overlap between a more transparent strip of each of the curtains and a less transparent strip of the other curtain. The action on the movable concentric roller is performed from outside by user action on a rope that hangs from the side of the gallery, and that is guided by means of casters installed in the closing parts of both ends of the gallery. The scrollable roller also has end brackets configured so that they can be suspended from a guide formed in the upper base of the gallery, so that the weight of this roller and the associated fabric is supported by said upper base of the gallery, and thereby avoiding friction and unwanted jams between both concentric rollers.

Brief description of the drawings

These and other features and advantages of the invention will become more clearly apparent from the Detailed description that follows from an exemplary embodiment preferred thereof, given for illustrative purposes only and not limiting, with reference to the accompanying drawings, in the that:

Figure 1 (a-c) shows views in front elevation and extreme elevations of a compliant device to the invention, devoid of fabrics for reasons of simplification of the drawing;

Figure 2 shows a view similar to the Figure 1, with the device equipped with the fabrics of both curtains, and

Figure 3 illustrates a representation schematic of a cross section made in the set of Figure 2 through line III-III of cut.

Description of a preferred embodiment

As mentioned above, the detailed description of the preferred embodiment of the object of the invention, will be carried out in what follows with the help of the attached drawings, through which they are used equal numerical references to designate equal parts or equivalent. Thus, attending first to Figure 1 of the drawings, you can see a schematic view in front elevation, of a curtain device according to the invention, mounted on a gallery marked in general with reference number 1, conveniently adapted to contain inside the mechanisms of the device, and in which the lid has been removed front in order to expose the various elements that integrate said device. Also, for reasons of greater clarity of exposure, the respective curtains have been removed that under operational conditions would appear suspended from the interior rollers of the gallery 1.

According to the representation, the set of the gallery presents a top wall, a back wall 1b, and a front wall that, as stated above, has been withdrawal in the representation of the drawing. At both ends, the Gallery 1 is closed by means of pieces or end caps, identified with numerical references 2 and 3, and shown to larger scale in representations (b) and (c) of this same Figure. Between both extreme pieces a roller 4 is extended conventional, in lower position, rotating in both directions in around its longitudinal axis as indicated by arrow F1, and a upper roller formation consisting of two rollers concentric, indicated with references 5 and 6, of different lengths and susceptible of joint rotation in both directions as and as indicated by arrow F2, of which the internal roller 5 is extended between both side covers 2, 3, and the external roller 6, It is shorter than the internal one and is capable of moving along the latter horizontally in both directions as and as indicated by arrow F3, for which purpose the external roller 6 is also supported by its ends by means of two supports that the upper part are suspended, with the possibility of horizontal displacement, from a formation as a guide internal made in the upper wall of gallery 1, with a bearing element inserted between each support 7 and the end corresponding to roller 6, so that the latter can rotate together with the internal roller 5, as said, to which key 8 formed along the roller 5 are provided in diametrically opposite positions, by which they drag respective bushings integral with said roller 6 external.

Under such conditions, it will be understood that the external roller 6 can be moved along roller 5 internal in an amount of travel equivalent to the difference of Length between both rollers. This operation is possible to take to out from the outside thanks to the provision of an element of traction, such as a rope 9 extended in a closed loop and which is supported in one of its branches with the supports 7, for what which, said rope extends through the interior of housings formed in the upper wall of the gallery 1, and access outside through one of the end caps, which in the representation (c) of Figure 1 is the cover 3, for which purpose said cover includes two parallel, vertical windows 11, each of the which houses a respective grooved pulley 12 also in position vertical, through whose throats passes said rope 9, while in in relation to the cover 2 of the opposite end, there is a window 13 horizontal (representation (b)) in which two are also housed 14 horizontal pulleys also horizontal, by whose throats respectively, the rope 9 is passed to return the loop. The rope 9 is normally held tensioned by means of a piece 10 strung on said rope and acting as a counterweight.

Also, as seen in Figure 1 commented, the set includes a conventional chain 15, for its drive from outside when the user wishes to rotate rollers 4, 5-6, to raise or lower the curtains The turning movement between these rollers is transmitted to through conventional gears, housed inside the cover 3.

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According to the above, the external roller 6 it is susceptible to displacement with respect to its internal roller 5 or concentric, while the turning movement is done by both rollers simultaneously with roller 4. Thus, when the curtains are installed as shown in Figure 2, a curtain 16 occupies delayed position and the other curtain 17 occupies position advanced. Each of the curtains has its surface divided into vertical strips 16a, 16b and 17a, 17b, respectively, of which a stripes 16a, 17a are of reduced transparency, and alternate with the strips 16b, 17b that are more transparent. Regarding the lower edge, each of the curtains 16, 17 incorporates a respective counterweight 18, 19 that keeps them tense. In position shown in Figure 2, the position of the strips 16a low transparency of the curtain 16, appear practically facing the stripes 17b of greater transparency of the curtain 17, so that the former let in a reduced amount of light towards the inside the space in which they are installed, getting with it a low level of illumination. However, it will be understood that acting on the rope 9, the horizontal displacement is caused of the external roller 6, and with it a greater or lesser degree of confrontation between the bands 16a, 16b of the curtain 16 with the bands 17a, 17b of curtain 17, thereby graduating the amount of transparency, and thus achieving the desired effect of "night and day "commented previously. Of course, acting on the chain 15, the height positioning of both curtains is regulated 16, 17 as stated.

If you now attend to the representation of the Figure 3, a schematic view of a section is seen cross section made by line III-III of the Figure 2. The representation shows how the base superior the one of the gallery presents by the interior the formation of three longitudinal housings, of which those located at both sides are intended to allow both branches of the loop formed by the rope 9, and the central housing constitutes a guide for each of the supports 7 associated respectively with each of the ends of the outer concentric roller 6. Too the curtains 16 and 17 suspended from each of the cited rollers 4 and 6.

It is not considered necessary to make the content of the present description so that an expert in the matter can understand its scope and the advantages of it are derived, as well as carrying out the practical realization of their object.

Notwithstanding the foregoing, and since the description given corresponds only to an example of preferred embodiment, it will be understood that within its essentiality multiple modifications and variations of detail, also included within the scope of the invention, and which in particular may affect features such as the shape, size or manufacturing materials, or any others that do not alter the invention as described and as defined in the following claims.

Claims (6)

1. Horizontal displacement device for overlapping curtains, in particular curtains (16, 17) that extend vertically occupying opposite positions, whose surfaces are divided into strips (16a, 16b; 17a, 17b) also vertical that alternately have different degrees of transparency , liable to allow a graduation of the light that penetrates from the outside to regulate the levels of interior lighting with a view to achieving what is known as the "night and day" effect, the device being mounted in a gallery (1) conveniently adapted to the needs of the installation, characterized in that it comprises a first roller (4) extended between the lateral covers (2, 3) of the gallery and capable of turning around its longitudinal axis, from which one (17) of the curtains, and a formation of second rollers, constituted on the basis of two concentric rollers (5, 6) of different lengths, parallel with the first roller (4), of which the internal concentric roller (5) is also extended between both side covers (2, 3) and the other external concentric roller (6), capable of supporting the other curtain (16), is capable of horizontal displacement along the first concentric roller (5) in an amount of travel equivalent to the difference in length between the two, this formation of concentric rollers (5, 6) being capable of common rotation with respect to its longitudinal axis and simultaneously with said first roller (4). Device according to claim 1, characterized in that said external concentric roller (6) is supported by its ends by means of two supports (7) also movable horizontally by fitting its upper portion into a guide formed internally in the upper wall (the) from the gallery itself (1) in which the device is incorporated. Device according to claims 1 and 2, characterized in that said upper wall (1a) of the gallery (1) further includes two other housings in relation to its upper wall (1a), on both sides of said guide, intended for housing the respective round-trip sections of a rope (9) that has one of its branches attached to both supports (7) and that accesses the exterior through one of the end caps (3) of the gallery (1), to facilitate the horizontal displacement action of said external concentric roller (6) with respect to the internal concentric roller (5). Device according to one or more of claims 1 to 3, characterized in that the end cap (3) of the rope exit (9) has a pair of vertical and parallel windows (11), each of which houses in its inside a pulley (12) also vertical grooved, in whose respective throats are housed the two branches of the rope (9) while the cover (2) of the opposite end of the gallery (1) includes a horizontal window (13) that also it houses a pair of grooved pulleys (14), equally horizontal, through whose throats the rope (9) also passes as a return. 5. Device according to one or more of the preceding claims, characterized in that the drag between both concentric rollers (5, 6) in terms of their rotation with respect to their common longitudinal axis, is secured by means of opposite longitudinal keys (8) made in the internal concentric roller (5), in combination with a bearing bushing associated with each of the ends of the external concentric roller (6). Device according to one or more of the preceding claims, characterized in that the simultaneous rotation movement of the rollers (4, 5-6) for the height positioning of both curtains (16, 17), is carried out with the help of a Conventional chain (15) acting on the first roller (4) and which, by means of gears located inside the end cap (3), transfers said turning movement to both concentric rollers (5, 6).