FR3053720A1 - STORE WITH ORIENTABLE BLADES - Google Patents

Abstract

The invention relates to a blind with adjustable blades (2), comprising an apron (8) formed by a series of steerable blades (80), a shaft (6) for winding the apron (8), a traction system (12). , 14, 102), for towing the apron blades according to a rotation of the shaft and at least one scale (10) for adjusting the orientation of the blades, this scale comprising a first strand (100) and a second strand (102) arranged to be wrapped around the apron, the two strands being interconnected by links (104) between which are arranged the blades (80). The traction system comprises the second strand (102) of each ladder, so that all the apron blades are towed simultaneously during the rotation of the shaft (6).

Description

© Publication no .: 3,053,720 (to be used only for reproduction orders)

©) National registration number: 16 56632 ® FRENCH REPUBLIC

NATIONAL INSTITUTE OF INDUSTRIAL PROPERTY

COURBEVOIE © IntCI ⁸

E 06 B 9/34 (2017.01), E 06 B 9/386, 9/42

A1 PATENT APPLICATION

(22) Date of filing: 11.07.16. © Applicant (s): ZURFLUH FELLER Company by (30) Priority: simplified actions - FR. @ Inventor (s): CACHALOU LAURENT, MENY FRE- DERIC and BROGLY SEBASTIEN. (43) Date of public availability of the request: 12.01.18 Bulletin 18/02. ©) List of documents cited in the report preliminary research: Refer to end of present booklet (© References to other national documents ©) Holder (s): ZURFLUH FELLER Joint-stock company related: simplified. ©) Extension request (s): (© Agent (s): LAVOIX.

(□ 4) ADJUSTABLE BLADE BLINDS.

FR 3 053 720 - A1 _ The invention relates to a blind with adjustable slats (2), comprising an apron (8) formed by a series of orientable blades (80), a shaft (6) for winding the apron (8) , a traction system (12, 14, 102), for towing the blades of the deck according to a rotation of the shaft and at least one scale (10) for adjusting the orientation of the blades, this scale comprising a first strand (100) and a second strand (102) arranged to be wound around the deck, the two strands being interconnected by links (104) between which the blades (80) are arranged. The traction system comprises the second strand (102) of each ladder, so that all the blades of the deck are pulled simultaneously during the rotation of the shaft (6).

ADJUSTABLE BLADE BLINDS

The invention relates to a blind with adjustable slats used to adjust the brightness inside a room of a building. The invention is applicable as much for venetian blinds arranged inside buildings as for adjustable sun shades arranged outside buildings.

A Venetian blind comprises an apron formed by a series of stackable slats and an upper rail inside which is housed a system of traction of the slats. The traction system includes traction cords or ribbons and corresponding reels. The cords or the traction ribbons each pass through the center of the blades and are attached at their end to a load bar or to the last blade of the deck. When pulling on pull cords or ribbons, the slats stack one on top of the other and the blind opens. Ladders are provided to orient the slats of the blind and thus adjust the brightness inside the room. Each ladder includes two strands arranged on either side of the blades and links each arranged between two successive blades. By pulling one or the other of the two strands, the blinds are oriented in one direction or the other.

The orientation axis of each blade is arranged in the central part, that is to say near the median plane of the blade, to avoid any interference with the cords or the traction ribbons during the orientation of the blades . Otherwise, the cords or the traction ribbons would oppose the rotation of the blades, which could degrade the cords or the traction ribbons and / or the blades.

A swiveling sunshade differs from a Venetian blind in that it includes wind-keeping slides. Blade tips are provided at both ends of each blade. These blade tips are guided inside the slides. The axis of orientation of each blade being arranged in the central part, the blades protrude on each side of the slides when they are oriented horizontally, that is to say to let the light through. The installer is therefore forced to shift the slides relative to the frame of the opening so that the orientation of the blades is not hampered by the frame. This constraint makes the installation of adjustable shades more difficult.

Furthermore, it is known from US 2 987 120 a Venetian blind having the particularity that the apron is wrapped around a tree housed inside a cavity. The deck slats are hinged at their two ends with two side ribbons. These two side ribbons are guided behind the scenes and allow the blades of the deck to be pulled from a rotation of the shaft. Two other ribbons are connected to each of the deck blades. These two other ribbons allow the blades to be oriented around their axis from a rotation of the shaft.

A drawback of this device is that the traction system composed of the two lateral ribbons must be sized relative to the heaviest deck of the range of blinds. The traction system is therefore oversized for most of the blinds in the range.

It is to these drawbacks that the invention more particularly intends to remedy by proposing a blind with adjustable slats, in which the traction system can be adapted according to the weight of the deck and in which the slides can be installed against the frame of the opening when the blind is intended to be installed outside.

To this end, the invention relates to a blind with adjustable slats comprising an apron formed by a series of adjustable slats, a winding shaft of the apron, a traction system, for pulling the blades of the apron from a rotation of the tree and at least one scale for adjusting the orientation of the blades, this scale comprising a first strand and a second strand arranged to be wound around the deck, the two strands being connected together by links, between which the blades are arranged . According to the invention, the traction system comprises the second strand of each ladder, so that all the blades of the deck are pulled simultaneously during the rotation of the shaft.

Thanks to the invention, each ladder is used both to adjust the orientation of the slats and to tow the slats of the deck when the blind is opened. The absence of cords or traction ribbons passing through the center of the blind blades makes it possible to offset the pivot axis of the blades at one end of them, that is to say near one of the edges longitudinal. Thus, when the awning is placed outside, the wind holding slides can be installed against the frame of the opening without hampering the orientation of the slats. In addition, the traction system can be adapted according to the weight of the deck by increasing or decreasing the number of ladders.

According to advantageous but not compulsory aspects of the invention, a blind with adjustable slat can include one or more of the following characteristics, taken in any technically admissible combination:

- The traction system includes, for each scale, at least one ring, which is integral in rotation with the winding shaft and which is linked to the second strand of the scale.

- The traction system comprises, for each scale, two rings and a connection means between one end of the second strand of the scale and the two rings.

- The connecting means is a rod on which is attached one end of the second strand and which is received in respective housings of the two rings.

- The blind includes, for each scale, a winding sleeve of the first strand, this sleeve being free to rotate around the shaft.

- The sleeve is interposed between the two rings.

- The tree is housed inside a box delimiting an opening for the passage of the deck.

- The awning includes a shaft drive actuator.

- The blind is an adjustable sunshade for an external facade, comprising two lateral wind-holding slides, and blade tips, which are pivotally mounted at the two ends of each blade and which are guided inside the slides. The pivot axis of each blade relative to the end pieces is located at or near at least one of the longitudinal edges of the blade.

- The pivot axis of each blade relative to the end caps is located on the side of the first strand of each scale.

The invention and other advantages thereof will appear more clearly in the light of the description which follows, of an embodiment of a blind with adjustable slats in accordance with its principle, given solely by way of example and made with reference to the accompanying drawings in which:

FIG. 1 is a partial perspective view of a blind with adjustable slats according to the invention,

FIG. 2 is a side view in section of the blind of FIG. 1, and

- Figure 3 is an enlarged view of Box III in Figure 2.

In FIGS. 1 to 3 is shown an awning with adjustable slats 2. In the example, awning 2 is an orientable sunshade intended to be installed outside a building.

The blind 2 comprises an apron 8 formed by a series of orientable blades 80 and a shaft 6 for winding the apron 8. As can be seen in FIGS. 1 and 3, each blade 80 comprises two longitudinal edges B1 and B2, which define the long sides of the blade.

The shaft 6 is housed in the center of a box 4 intended to be installed in the upper part of an opening, such as a window. The box 4 is placed above a frame 52 of the opening and delimits an opening for the passage of the deck 8. The shaft 6 is movable in rotation around a central axis X6, which is horizontal in configuration of use of the blind. Advantageously, the blind comprises an actuator, not shown, for driving the shaft 6 and a control device. This actuator can be of the tubular type housed inside the hollow shaft 6. As a variant, the rotation of the shaft can be controlled by a manual system, comprising for example a winch and a crank.

The blind 2 includes slides 20 for holding the wind, specific to an external installation. The slides 20 define a guide plane P20 for the deck 8. In the example, the box 4 delimits an internal volume V4 which is offset relative to the guide plane P20. The winding shaft 6 is therefore also offset laterally with respect to the plane P20.

Blade tips 18 are pivotally mounted at both ends of each blade 80. The blade tips 18 are guided inside the slides 20 and are immobilized in rotation inside them. Thus, when the blade tips 18 are housed in the slides 20, only the blades 80 are pivotally movable. The pivot axis of each blade 80 is referenced X80 in the figures. This axis X80 is horizontal in the configuration of use of blind 2.

Advantageously, the blade tips 18 are connected together by a guide tape 22.

The blind 2 includes two scales 10 for adjusting the orientation of the slats 80, only one of these two scales 10 being visible in the figures. Each scale 10 comprises a first strand 100, a second strand 102 and links 104 connecting the strands 100 and 102. The strands 100 and 102 and the links 104 may be provided in the form of strings or ribbons. The strands 100 and 102 extend on either side of the apron 8. The links 104 are each arranged between two successive blades of the apron. Thus, each blade 80 is arranged in a parallelogram having two opposite sides formed by links 104 and two other opposite sides formed by the strands 100 and 102. As visible in FIG. 3, each link 104 is arranged so as to cooperate with a lower surface of an apron blade, by pressing against this surface

In this document, the opening of the blind corresponds to the rise of the apron 8, while the closing of the blind corresponds to the descent of the apron 8.

The assembly formed by the deck 8 and the two scales 10 is wound around the winding shaft 6 when the blind 2 is opened. The fact that the scales 10 are wound with the blades 80 makes it possible to protect the blades when the blind is opened. The strand 102 is arranged to be wound around the apron, that is to say on the outer face of the apron 8 during the opening of the blind, this is why we speak of an “outside” strand, while the strand 100 is arranged to be wound on the inner face of the apron 8 when the blind is opened, this is why we speak of an "inner" strand. The outer face of the apron 8 is defined as the face of the apron 8 which is visible when the apron is wound around the shaft 6. The inner strand 100 is disposed on the side of the edge B1 of the blades 80, while the outer strand 102 is arranged on the side of the edge B2 of the blades 80.

The blind 2 comprises a system for pulling the blades 80 of the deck 8, configured to pull the blades 80 of the deck 8 from a rotation of the shaft 6. This traction system comprises the outer strand 102 of each ladder 10. The outer strand 102 of the scales 10 is therefore towed during the rotation of the shaft 6, that is to say that a tensile force is applied to one end of the outer strand 102 when the shaft 6 rotates around axis X6. The strand 102 is then found under tension. The traction of the outer strand 102 of each scale 10 causes the winding of the scales 10 around the shaft 6 and consequently the winding of the blades 80 each housed inside a space defined between two successive links 104 of the 'scale 10. All the blades 80 are therefore pulled simultaneously during the rotation of the shaft 6. This mode of operation is fundamentally different from that of traditional Venetian blinds, in which only the final blade of the deck is pulled by the or the traction cords and in which each of the other blades is piled above the final when the blind is opened.

The traction system also comprises, for each scale 10, two rings 14 integral in rotation with the shaft 6 and a connecting means 12 between one end of the strand 102 and the two rings 14. In the example, this connecting means is a rod 12 on which is attached one end of the strand 102 and which is received in respective housings of the two rings 14. The rings 14 are linked in rotation with the shaft 6 by screwing. As a variant, one can imagine that they are made integral in rotation with the shaft 6 by complementary shape between the outer surface of the shaft and the inner surface of the rings 14.

Cleverly, the traction system can be adapted according to the weight of the deck 8, by increasing or decreasing the number of scales 10, connecting means 12 and rings 14.

Furthermore, the blind 2 comprises, for each scale 10, a sleeve 16 for winding the first strand 100. This sleeve 16 is free to rotate around the shaft 6. Thus, the strand 100 is not under tension during of the winding or unwinding of the deck. The strand 100 simply follows the movement of the strand 102 due to the presence of the links 104 and is wound around the sleeve 16. The strand 100 is therefore connected to the shaft so that the rotation of the latter does not cause not the traction of the strand 100. In other words, the strand 100 is not part of the traction system.

Advantageously, the sleeve 16 is interposed, along the axis 6, between the two rings 14.

The absence of cords or traction ribbons passing through the center of the blades 80 of the blind makes it possible to offset the pivot axis X80 of the blades 80 at one of the longitudinal edges B1 and B2 of the blade, or at least proximity to it. Consequently, the blades 80 protrude only on one side of the slides 20 when they are oriented horizontally, that is to say in position to let the light through. Advantageously, the pivot axis X80 of each blade is disposed near the edge B1 of the blades 80, that is to say on the side of the inner strand 100 of the scales 10, so that the blades protrude, relative to the slides , on the side opposite the frame 52 of the opening. The frame 52 therefore does not form an obstacle to the orientation of the blades 80 horizontally. Thus, the slides 20 can be installed directly against the frame 52 of the opening, which facilitates the work of the installer.

The shutter 2 is closed as follows. The apron 8 is unrolled by a rotation of the winding shaft 6. When the blind 2 is completely closed, that is to say when the apron 8 reaches a low end position, an additional rotation of the 'winding shaft 6 in the same direction allows to orient each of the blades 80 from a concealment position, substantially vertical, to a through position, substantially horizontal. In the final stage of unfolding of the deck, the strand 100 finishes unwinding and then stretches. This situation thus makes it possible to orient the blades because the strand 102 continues to unwind. In practice, the blades 80 orient themselves naturally under the effect of gravity, as represented by the arrow F1 in FIG. 3.

As a variant not shown, the blind with adjustable slats 2 is a Venetian blind intended to be installed inside a room. In this case, the side slides and the blade tips are no longer necessary. Similarly, the axis of orientation of the blades is not necessarily offset near a longitudinal edge of the blade.

According to another variant, not shown, the winding shaft 6 can be arranged near the slide plane P20. The guide strips 22 then become optional.

According to another variant not shown, the connection between the strand 102 and the shaft 6 is different. For example, only one ring 14 can be provided for each scale 10. Also, the strand 102 can be attached directly to the shaft 6 and each ring 14 can be in one piece with the shaft 6.

The characteristics of the embodiment and of the different variants can be combined with one another to generate new embodiments of the invention.

Claims (10)

1. Blinds with adjustable slats (2), comprising: - an apron (8) formed by a series of orientable blades (80), - a shaft (6) for winding the deck (8), - a traction system (12, 14, 102), for pulling the deck blades according to a rotation of the shaft, and - At least one scale (10) for adjusting the orientation of the blades, this scale comprising a first strand (100) and a second strand (102) arranged to be wound around the deck, the two strands being connected together by links (104) between which the blades (80) are arranged, characterized in that the traction system comprises the second strand (102) of each ladder, so that all the blades of the deck are pulled simultaneously during the rotation of the tree (6). 2. Store according to claim 1, characterized in that the traction system comprises, for each scale (10), at least one ring (14), which is rotatably integral with the winding shaft (6) and which is linked to the second strand (102) of the scale. 3. Store according to claim 2, characterized in that the traction system comprises, for each scale (10), two rings (14) and a connecting means (12) between one end of the second strand (102) of the scale and the two rings. 4. Store according to claim 3, characterized in that the connecting means is a rod (12) on which is attached one end of the second strand (102) and which is received in respective housings of the two rings (14). 5. Blind according to one of the preceding claims, characterized in that it comprises, for each scale (10), a sleeve (16) for winding the first strand (100), this sleeve being mounted to rotate freely around the tree (6). 6. Store according to claims 3 and 5, characterized in that the sleeve (16) is interposed between the two rings (14). Ί. Store according to one of the preceding claims, characterized in that the shaft (6) is housed inside a box (4) delimiting an opening for the passage of the deck (8). 5 8. Store according to one of the preceding claims, characterized in that it comprises a shaft drive actuator (6). 9. Store according to one of the preceding claims, characterized in that the store is an adjustable sunshade for an exterior facade, comprising: 10 - two lateral slides (20) for holding the wind, - blade tips (18), which are pivotally mounted at the two ends of each blade (80) and which are guided inside the slides, and in that the pivot axis (X80) of each blade by relative to the end pieces (18) is located at one (B1) of the longitudinal edges (B1, B2) of the blade, 15 or at least close to it. 10. Store according to the preceding claim, characterized in that the pivot axis (X80) of each blade relative to the end pieces (18) is located on the side of the first strand (100) of each scale. 1/3 2/3 3/3