EP1983143A1 - Device for winding a suspension cord comprising means for guiding the cord - Google Patents

Device for winding a suspension cord comprising means for guiding the cord Download PDF

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Publication number
EP1983143A1
EP1983143A1 EP08154387A EP08154387A EP1983143A1 EP 1983143 A1 EP1983143 A1 EP 1983143A1 EP 08154387 A EP08154387 A EP 08154387A EP 08154387 A EP08154387 A EP 08154387A EP 1983143 A1 EP1983143 A1 EP 1983143A1
Authority
EP
European Patent Office
Prior art keywords
winding
cord
drum
ring
winding device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP08154387A
Other languages
German (de)
French (fr)
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EP1983143B1 (en
Inventor
Eric Lagarde
Norbert Guy Dupielet
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Somfy SA
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Somfy SA
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Publication date
Application filed by Somfy SA filed Critical Somfy SA
Publication of EP1983143A1 publication Critical patent/EP1983143A1/en
Application granted granted Critical
Publication of EP1983143B1 publication Critical patent/EP1983143B1/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
    • E06B9/26—Lamellar or like blinds, e.g. venetian blinds
    • E06B9/28—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable
    • E06B9/30—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable
    • E06B9/303—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable with ladder-tape
    • E06B9/308—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable with ladder-tape with coaxial tilting bar and raising shaft
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
    • E06B9/26—Lamellar or like blinds, e.g. venetian blinds
    • E06B9/28—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable
    • E06B9/30—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable
    • E06B9/32—Operating, guiding, or securing devices therefor
    • E06B9/322—Details of operating devices, e.g. pulleys, brakes, spring drums, drives
    • E06B2009/3225—Arrangements to aid the winding of cords rollers

Definitions

  • the invention relates to devices for winding blind suspension cords, used mainly for the manual or motorized operation of a blind.
  • a lifting device comprises a winding drum on which a suspension cord is wound in turns.
  • the suspension cord is at least fixed on a lower part of the blind and when winding this cord on the drum, raises the entire blind.
  • the operating devices of venetian blinds with adjustable blades comprise two operating systems: a first operating system allows the movement or lifting of the blades.
  • a second system is a blade orientation device.
  • the orientation device generally comprises a groove in which is placed a loop at the end of orientation cords forming a kind of scale.
  • the rotation at a limited angle (less than one turn) of the ladder in this groove causes the ladder to move in one direction or the other, causing the blades to rotate along their longitudinal axis of rotation.
  • These devices can be independent, requiring two associated control devices or be mounted on the same shaft so that they can be controlled by a single control device.
  • the latter case is particularly advantageous for motorized systems: in fact, the orientation device and the winding device are generally placed on the same axis and are rotated simultaneously. This maneuvering device makes it possible to generate the two movements (lifting and orienting) from the rotation of a same tree, driven by a single motor. When rotating the shaft for more than one turn, the ladder slips into the groove as the drawstring winds or unwinds from the drum.
  • the suspension cord and the ladder arrive at the maneuvering device substantially in the same plane, perpendicular to the rotation shaft of the device (the user perceives then visually only one cord) . They are then guided to the winding devices or to the grooves of the orientation device. However, it can happen, especially if there is no tension on the suspension cord or on the contrary in case of strong tension on the cord, that it moves and gets stuck. In particular, the suspension cord can tilt in the groove for the scale, this having the effect of disrupting the operation of the entire operation of the blind, or even break the cords.
  • the assembly constituted by the drum and the groove tends to move slightly under the effect of load variations, which can cause misalignment between the arrival of the suspension cord and the location of forming the first turn on the drum.
  • the suspension cord tends to be aligned with the throat and may become staggered and become stuck.
  • the axial attachment of the drum is delicate, because this piece is rotating vis-à-vis the support and generally involves leaving a game through which the cord may pass.
  • Requirement DE 202006008012 U presents in connection with the state of the art, a winding device in the form of a drum and extended by a groove for the tilting of the ladder.
  • this device When this device is mounted in its support or cradle, it can remain a space D through which the winding cord can pass when it has a small diameter or no load on the cord. Indeed, it is necessary to leave a game between the support and the drum to allow it to rotate without friction.
  • this document does not provide a solution to this problem.
  • Requirement FR 1 319 645 also describes the problem of overlapping and jamming of the different cords relative to each other.
  • the so-called carrier or guide cords and the suspension cords are driven by the same winding shaft and tilting, the latter moving axially along its axis during its rotation through a system of screw-nut type, in order to prevent the turns of the suspension cord from overlapping with each other.
  • a separating device in the form of a ring freely rotating on the winding and tilting shaft or in the form of a plate or partition through which the winding and tilting shaft passes, makes it possible to place each cord on one side or the other and thus avoid interactions between the two cords.
  • the document EP 1 577 483 also has a winding device comprising a drum provided with a shoulder. This one is in rotating contact with a contact surface in a first support part.
  • a second support member in which the drum rotates is mounted to the first workpiece through a cover extending along the length of the drum and engaging the first workpiece.
  • the plane of arrival of the cord at the level of the first support part is deliberately offset with respect to the plane of the contact surface, coplanar with the shoulder, this plane being located on one side of the plane of contact opposite to the point d attachment of the cord to the drum.
  • a turn may be formed by driving by the shoulder and shifting out of the winding drum.
  • the object of the invention is to provide a suspension cord winding device remedying the disadvantages mentioned above and improving the known devices of the prior art.
  • the invention makes it possible, by providing a simple construction device and easy to use, to avoid any problem related to the incorrect positioning of the suspension cord in the winding device.
  • the invention makes it possible to avoid any interference between the suspension cord and the orientation cord.
  • the winding device is defined by claim 1.
  • the appended drawing shows, by way of example, an embodiment of a blind cord winding device according to the invention.
  • the figure 1 is a diagram of a motorized venetian blind according to the invention.
  • the figure 2 is an exploded perspective view of the cord winding device according to the invention.
  • the figure 3 is a front view of the cord winding device according to the invention.
  • the figure 4 is a right view of the cord winding device according to the invention.
  • the figure 5 is a longitudinal sectional view of the cord winding device according to the invention.
  • the cord winding device comprises a drum provided with a shoulder separating it from a groove for the orientation device. It also includes a support part for this set, and provided with an opening for the passage of the various cords.
  • a ring adapted to be threaded on the drum is substantially a complete turn.
  • the ring once threaded along the drum, bears on the shoulder of the drum. It comprises on the one hand an extension to maintain it vis-à-vis the support and maintain the ladder in his groove forming a lid.
  • the ring is provided on the other hand with at least one main lug extending substantially radially and forming a guide for the cord, the guide being delimited at least by this main leg and the ring.
  • the ladder passes through the hole of the support and is held in the groove.
  • the suspension cord passes through the orifice of the support and is led through the passage described above on the other side of the ring where it can be wound on the winding drum.
  • the ring forms a circular barrier beyond which the turns are formed.
  • the point of entry of the cord into the device located on the other side of this barrier the risk that a coil comes for example in the absence of load move to the groove is considerably minimized or canceled.
  • misalignment voluntarily introduced between the access point of the suspension cord and the location of formation of the turns on the drum is perfectly controlled, including when the drum has an axial play. Indeed, the turns are formed against the ring and not against an element integral with the drum.
  • the appearance of protection and effective guiding of the cord is reinforced by the realization of the closed passage, delimited by the support, the ring and the main leg.
  • the ring Due to the support on the shoulder, the ring is axially connected to both the drum and the support. It helps to avoid an uncontrolled shift between the point of entry of the suspension cord and the winding point of the turns. Thus, the assembly is simple and safe.
  • the mechanical connection between the drum and the support can also take the form of a lid, as described above.
  • This cover has several advantages: in particular, it allows to maintain the ladder in the groove during assembly of the entire blind and in case of lifting the blind. Then, it also forms a cover closing the groove in the case where a relaxed coil of the suspension cord would pass at least partially on the other side of the ring.
  • the combination with the support makes it possible to obtain an easy assembly and a very simplified set compared to the devices of the state of the art, while preserving the useful functionalities and providing solutions with respect to the defined problems.
  • the winding device 1 comprises a winding shaft 2 comprising on the one hand a groove 5 intended to receive a loop of orientation cord, and on the other hand a winding drum 3 of slightly conical shape provided with its end close to the groove, a shoulder 4.
  • a piece 31 closes the hollow drum at the end opposite the shoulder.
  • the winding shaft 2 is rotatably mounted along its longitudinal axis 6 in a support 7.
  • This support comprises a first circular opening 8 for the passage of the suspension cord 11 and a second opening 9 for the passage of the orientation cords 10
  • the opening 9 has a U-shape flattened at the bottom of which the opening 8 is located. configuration allows to introduce the cords substantially in the same plane.
  • An independent separating piece 12 comprises a ring 13 threaded onto the winding drum 3 and bearing on the shoulder 4 of the drum 3.
  • the shoulder and the ring form contact surfaces for easy rotation of the drum.
  • the inner diameter of the ring is substantially equal (with the functional clearance of rotation close) to the maximum outer diameter of the drum and less than the diameter of the shoulder.
  • the outer diameter of the ring may be greater than the diameter of the shoulder.
  • the face 131 of the ring 13 facing the winding drum 3 may have an inclination relative to the plane perpendicular to the axis of the winding shaft 2. This inclination makes it possible to shift the first turn so as to release sufficient space for the next and thus favor the offset of the turns in the direction of the winding drum 3. Thus, the risk of overlapping turns is decreased.
  • a first main tab 14 radial in the plane of the ring, oriented generally in the direction of arrival of the cord at the winding device.
  • the plane of the ring is perpendicular to the axis 6 of the winding shaft.
  • the ring 13, in particular the surface 131, and the first main leg 14 define two distinct zones, a first arrival zone of the cord 11 on one side of the ring (facing the throat) (also called zone d and a second winding zone of the suspension cord 11 on the other side of the ring (facing the drum 3), i.e. on each side of the plane in which the ring and the main leg or on each side of the plane of the surface 131.
  • the boundary between the entry and winding areas is represented by the plane 132.
  • the first main tab 14 defines with the ring a passage 150 for the suspension cord 11 so that it can pass from one zone to another but only in an area delimited on the one hand by the junction between the ring and the main tab 14 and not anywhere on the periphery of the ring 13.
  • This area has in particular an angular extent measured from the axis of the limited drum, the angular extent is represented by the angle ⁇ on the figure 4 .
  • the main leg 14 can therefore influence the direction of the tensile force on the cord, force tangent to the winding drum 3 in a plane perpendicular to the axis of the shaft, and forces the cord to arrive on the drum 3 to a precise zone of the perimeter of the drum 3.
  • the main leg 14 may take the form of a foot for the ring 13.
  • a second main leg 14 symmetrical with respect to the vertical diameter of the 'ring.
  • These two main legs contribute to the stability of the ring 13 during the rotation of the drum, so that it is not rotated by the drum 3 and it does not deform from its point of attach to the support.
  • the main legs constitute a means of limiting the rotation of the ring relative to the support.
  • This main tab symmetrical to the first also has the advantage of allowing to guide the cord 11 also when it is wound in a second winding direction around the drum 3.
  • the support 7 closes the passage 150 delimited by the ring 13 and the first main leg 14.
  • the cord suspension 11 is then guided from the opening 8 of the support from below the ring and to the winding drum. Any movement of the cord towards the top of the drum is blocked by one of the main legs 14.
  • One or more axial auxiliary tabs 16 extend from the ring along the axis of the winding shaft in the direction of the drum 3.
  • Each auxiliary leg 16 is distant from the winding drum 3, the distance d1 being determined slightly greater than the standard diameter of the suspension cords.
  • the auxiliary tab or tabs 16 cap at least part of the turns on the winding drum 3 so as to avoid their overlap on this part of the drum.
  • the separating piece 12 comprises an axial extension 17 extending from the ring along the axis of the winding shaft in the direction opposite to that of the drum 3.
  • This extension 17 comprises attachment means 171 , cooperating with corresponding means on the support 7.
  • the separation piece 12 can thus be fixed to the support 7.
  • the attachment means 171 are slightly elastic plastic elements for quick and detachable connection.
  • the extension 17 also serves as a cover for the groove 5, which keeps the ladder in the groove if for example the entire blind and therefore the ladder, are raised.
  • the separation piece 12 In operation under load, the separation piece 12 bears axially on the shoulder 4 of the winding drum 3 which rests on the support. The drum is held axially by the assembly of the support 7 and the separating part 12. The gap between the end point cord 11 and the winding point of the cord is controlled, which avoids variations in distance and the risk of tilting of the suspension cord 11 in the groove 5 for the orientation cord 10. It is possible, however, to keep an axial clearance for the winding shaft 2 to facilitate assembly and to avoid excessive friction between the winding drum (or the shoulder thereof) and the ring of the separating piece 12 .
  • limitation of the angular mobility of the cord around the drum is meant limitation of the extent, measured angularly from the axis of the drum, of all the positions that can take the cord at its passage of the drum. entrance area to the winding area.

Abstract

The device (1) has a winding shaft (2) supporting a winding drum (3) on which a suspension cord is wound during rotation of the shaft around an axis of the shaft to displace a blind. A closed ring (13) surrounds the drum, where a face (131) of the ring forms a support surface for the cord when the cord is wound on the drum. The support surface defines an inlet zone of the cord and an outlet zone of the cord along an axis (6) of the shaft. A guiding passage guides the cord from the inlet zone to a winding zone, and limits mobility of the cord angularly around the drum.

Description

L'invention concerne les dispositifs d'enroulement de cordons de suspension de store, utilisés principalement pour la manoeuvre manuelle ou motorisée d'un store.The invention relates to devices for winding blind suspension cords, used mainly for the manual or motorized operation of a blind.

Un dispositif de levage comprend un tambour d'enroulement sur lequel vient s'enrouler en spires un cordon de suspension. Le cordon de suspension est au moins fixé sur une partie basse du store et lors de l'enroulement de ce cordon sur le tambour, soulève l'ensemble du store.A lifting device comprises a winding drum on which a suspension cord is wound in turns. The suspension cord is at least fixed on a lower part of the blind and when winding this cord on the drum, raises the entire blind.

En particulier, les dispositifs de manoeuvre de stores vénitiens à lames orientables comprennent deux systèmes de manoeuvre : un premier système de manoeuvre permet le déplacement ou levage des lames. Un second système est un dispositif d'orientation des lames.In particular, the operating devices of venetian blinds with adjustable blades comprise two operating systems: a first operating system allows the movement or lifting of the blades. A second system is a blade orientation device.

Le dispositif d'orientation comprend généralement une gorge dans laquelle est placée une boucle en extrémité de cordons d'orientation formant une sorte d'échelle. La rotation, suivant un angle limité (moins d'un tour) de l'échelle dans cette gorge entraîne l'échelle dans un sens ou dans l'autre, entraînant les lames en rotation suivant leur axe longitudinal de rotation.The orientation device generally comprises a groove in which is placed a loop at the end of orientation cords forming a kind of scale. The rotation at a limited angle (less than one turn) of the ladder in this groove causes the ladder to move in one direction or the other, causing the blades to rotate along their longitudinal axis of rotation.

Ces dispositifs peuvent être indépendants, nécessitant deux dispositifs de commande associés ou être montés sur un même arbre de manière à pouvoir être commandés par un seul dispositif de commande. Ce dernier cas est particulièrement avantageux pour les systèmes motorisés : en effet, le dispositif d'orientation et le dispositif d'enroulement sont généralement placés sur un même axe et sont mis en rotation de manière simultanée. Ce dispositif de manoeuvre permet de générer les deux mouvements (levage et orientation) à partir de la rotation d'un même arbre, entraîné par un seul moteur. Lors de la rotation de l'arbre sur plus d'un tour, l'échelle glisse dans la gorge tandis le cordon de suspension s'enroule ou se déroule du tambour.These devices can be independent, requiring two associated control devices or be mounted on the same shaft so that they can be controlled by a single control device. The latter case is particularly advantageous for motorized systems: in fact, the orientation device and the winding device are generally placed on the same axis and are rotated simultaneously. This maneuvering device makes it possible to generate the two movements (lifting and orienting) from the rotation of a same tree, driven by a single motor. When rotating the shaft for more than one turn, the ladder slips into the groove as the drawstring winds or unwinds from the drum.

Pour des raisons essentiellement esthétiques, le cordon de suspension et l'échelle arrivent au niveau du dispositif de manoeuvre sensiblement dans un même plan, perpendiculaire à l'arbre de rotation du dispositif (l'utilisateur ne perçoit alors visuellement qu'un seul cordon). Ils sont alors guidés vers les dispositifs d'enroulement ou vers les gorges du dispositif d'orientation. Cependant, il peut arriver, notamment en cas d'absence de tension sur le cordon de suspension ou au contraire en cas de forte tension sur le cordon, que celui-ci se déplace et se coince. En particulier, le cordon de suspension peut basculer dans la gorge destinée à l'échelle, ceci ayant pour effet de perturber le fonctionnement de l'ensemble de la manoeuvre du store, voire de casser les cordons.For essentially aesthetic reasons, the suspension cord and the ladder arrive at the maneuvering device substantially in the same plane, perpendicular to the rotation shaft of the device (the user perceives then visually only one cord) . They are then guided to the winding devices or to the grooves of the orientation device. However, it can happen, especially if there is no tension on the suspension cord or on the contrary in case of strong tension on the cord, that it moves and gets stuck. In particular, the suspension cord can tilt in the groove for the scale, this having the effect of disrupting the operation of the entire operation of the blind, or even break the cords.

Par ailleurs, l'ensemble constitué par le tambour et la gorge a tendance à se déplacer légèrement sous l'effet des variations de charge, ce qui peut provoquer un désalignement entre l'orifice d'arrivée du cordon de suspension et l'emplacement de formation de la première spire sur le tambour. De ce fait, le cordon de suspension a tendance à se retrouver aligné avec la gorge et risque de s'y décaler et de s'y retrouver coincé. La fixation axiale du tambour est délicate, du fait que cette pièce est tournante vis-à-vis du support et implique généralement de laisser un jeu au travers duquel le cordon risque de passer.Furthermore, the assembly constituted by the drum and the groove tends to move slightly under the effect of load variations, which can cause misalignment between the arrival of the suspension cord and the location of forming the first turn on the drum. As a result, the suspension cord tends to be aligned with the throat and may become staggered and become stuck. The axial attachment of the drum is delicate, because this piece is rotating vis-à-vis the support and generally involves leaving a game through which the cord may pass.

De telles problématiques sont évoquées dans les documents suivants.Such issues are mentioned in the following documents.

La demande DE 202006008012 U présente en relation avec l'état de la technique, un dispositif d'enroulement sous forme d'un tambour et prolongé par une gorge pour le basculement de l'échelle. Lorsque ce dispositif est monté dans son support ou berceau, il peut rester un espace D par lequel le cordon d'enroulement peut passer lorsqu'il a un faible diamètre ou en absence de charge sur le cordon. En effet, il est nécessaire de laisser un jeu entre le support et le tambour pour permettre à celui-ci de tourner sans frottements. Cependant, ce document ne donne pas de solution à ce problème.Requirement DE 202006008012 U presents in connection with the state of the art, a winding device in the form of a drum and extended by a groove for the tilting of the ladder. When this device is mounted in its support or cradle, it can remain a space D through which the winding cord can pass when it has a small diameter or no load on the cord. Indeed, it is necessary to leave a game between the support and the drum to allow it to rotate without friction. However, this document does not provide a solution to this problem.

La demande FR 1 319 645 décrit également le problème de chevauchement et de coincement des différents cordons l'un par rapport à l'autre. Les cordons dits porteurs ou cordons d'orientation et les cordons de suspension sont entraînés par un même arbre d'enroulement et de basculement, celui-ci se déplaçant axialement suivant son axe pendant sa rotation grâce à un système de type vis-écrou, de manière à éviter que les spires du cordon de suspension ne se chevauchent entre elles.Requirement FR 1 319 645 also describes the problem of overlapping and jamming of the different cords relative to each other. The so-called carrier or guide cords and the suspension cords are driven by the same winding shaft and tilting, the latter moving axially along its axis during its rotation through a system of screw-nut type, in order to prevent the turns of the suspension cord from overlapping with each other.

Un dispositif de séparation, sous forme d'un anneau tournant librement sur l'arbre d'enroulement et de basculement ou sous forme d'une plaque ou cloison au travers de laquelle passe l'arbre d'enroulement et de basculement, permet de placer chaque cordon d'un côté ou de l'autre et ainsi d'éviter les interactions entre les deux cordons.A separating device, in the form of a ring freely rotating on the winding and tilting shaft or in the form of a plate or partition through which the winding and tilting shaft passes, makes it possible to place each cord on one side or the other and thus avoid interactions between the two cords.

Dans les systèmes plus communément utilisés actuellement, il n'est pas prévu de système de déplacement axial forcé de l'arbre d'enroulement et de basculement comme décrit dans le document FR 1 319 645 . Une forme conique ou à réduction du diamètre du tambour d'enroulement suivant son axe longitudinal permet de dégager les spires lors de leur formation afin d'éviter leur chevauchement. Un tel arrangement est décrit dans le brevet EP 0 554 212 . Le tambour décrit comprend notamment un épaulement et un tambour auxiliaire à diamètre variable.In the systems more commonly used today, there is no provision for forced axial displacement of the winding and tilting shaft as described in the document FR 1 319 645 . A conical shape or reduction of the diameter of the winding drum along its longitudinal axis makes it possible to clear the turns during their formation in order to avoid their overlap. Such an arrangement is described in the patent EP 0 554 212 . The described drum comprises in particular a shoulder and a variable diameter auxiliary drum.

Le document EP 1 577 483 présente également un dispositif d'enroulement comprenant un tambour muni d'un épaulement. Celui-ci est en contact tournant vis-à-vis d'une surface de contact dans une première pièce de support. Une seconde pièce de support dans laquelle tourne le tambour est montée vis-à-vis de la première pièce par l'intermédiaire d'un couvercle s'étendant sur la longueur du tambour et venant en prise sur la première pièce. Le plan d'arrivée du cordon au niveau de la première pièce de support est volontairement décalé par rapport au plan de la surface de contact, coplanaire avec l'épaulement, ce plan étant situé d'un côté du plan de contact opposé au point d'attachement du cordon sur le tambour.The document EP 1 577 483 also has a winding device comprising a drum provided with a shoulder. This one is in rotating contact with a contact surface in a first support part. A second support member in which the drum rotates is mounted to the first workpiece through a cover extending along the length of the drum and engaging the first workpiece. The plane of arrival of the cord at the level of the first support part is deliberately offset with respect to the plane of the contact surface, coplanar with the shoulder, this plane being located on one side of the plane of contact opposite to the point d attachment of the cord to the drum.

Ce document ne décrit pas d'avantage particulier lié à cette construction de dispositif d'enroulement. De plus, dans le cas d'un jeu axial entre les deux pièces de support, il reste un risque que les spires passent au-delà de l'épaulement et entre l'épaulement et la surface de contact.This document does not describe any particular advantage related to this winding device construction. In addition, in the case of axial play between the two support pieces, there remains a risk that the turns pass beyond the shoulder and between the shoulder and the contact surface.

Ceci est renforcé par le fait que l'épaulement tourne avec le tambour et entraîne la première spire du cordon sur le tambour. En l'absence de charge, par exemple suite à un blocage des lames sur un obstacle, une spire peut être formée par entraînement par l'épaulement et se décaler hors du tambour d'enroulement.This is reinforced by the fact that the shoulder rotates with the drum and causes the first turn of the cord on the drum. In the absence of a load, for example following blockage of the blades on an obstacle, a turn may be formed by driving by the shoulder and shifting out of the winding drum.

Le but de l'invention est de fournir un dispositif d'enroulement de cordon de suspension remédiant aux inconvénients évoqués précédemment et améliorant les dispositifs connus de l'art antérieur. En particulier, l'invention permet, par la fourniture d'un dispositif de construction simple et d'utilisation aisée, d'éviter tout problème lié au mauvais positionnement du cordon de suspension dans le dispositif d'enroulement. Notamment, l'invention permet d'éviter toute interférence entre le cordon de suspension et le cordon d'orientation.The object of the invention is to provide a suspension cord winding device remedying the disadvantages mentioned above and improving the known devices of the prior art. In particular, the invention makes it possible, by providing a simple construction device and easy to use, to avoid any problem related to the incorrect positioning of the suspension cord in the winding device. In particular, the invention makes it possible to avoid any interference between the suspension cord and the orientation cord.

Selon l'invention, le dispositif d'enroulement est défini par la revendication 1.According to the invention, the winding device is defined by claim 1.

Différents modes de réalisation du dispositif d'enroulement selon l'invention sont définis par les revendications dépendantes 2 à 14.Different embodiments of the winding device according to the invention are defined by the dependent claims 2 to 14.

Le dessin annexé représente, à titre d'exemple, un mode de réalisation d'un dispositif d'enroulement de cordon de store selon l'invention.The appended drawing shows, by way of example, an embodiment of a blind cord winding device according to the invention.

La figure 1 est un schéma d'un store vénitien motorisé selon l'invention.The figure 1 is a diagram of a motorized venetian blind according to the invention.

La figure 2 est une vue éclatée en perspective du dispositif d'enroulement de cordon selon l'invention.The figure 2 is an exploded perspective view of the cord winding device according to the invention.

La figure 3 est une vue de face du dispositif d'enroulement de cordon selon l'invention.The figure 3 is a front view of the cord winding device according to the invention.

La figure 4 est une vue de droite du dispositif d'enroulement de cordon selon l'invention.The figure 4 is a right view of the cord winding device according to the invention.

La figure 5 est une vue en coupe longitudinale du dispositif d'enroulement de cordon selon l'invention.The figure 5 is a longitudinal sectional view of the cord winding device according to the invention.

Le dispositif d'enroulement du cordon comprend un tambour muni d'un épaulement le séparant d'une gorge destinée au dispositif d'orientation. Il comprend également une pièce formant support pour cet ensemble, et munie d'une ouverture pour le passage des différents cordons.The cord winding device comprises a drum provided with a shoulder separating it from a groove for the orientation device. It also includes a support part for this set, and provided with an opening for the passage of the various cords.

Un anneau apte à être enfilé sur le tambour fait sensiblement un tour complet. L'anneau, une fois enfilé le long du tambour, vient en appui sur l'épaulement du tambour. Il comprend d'une part une extension servant à le maintenir vis-à-vis du support et à maintenir l'échelle dans sa gorge en formant un couvercle. L'anneau est muni d'autre part d'au moins une patte principale s'étendant sensiblement radialement et formant un guide pour le cordon, le guide étant délimité au moins par cette patte principale et par l'anneau. Lorsque l'anneau est monté vis-à-vis du support, le passage pour le cordon est délimité par l'anneau, la patte principale et le support. L'anneau définit une frontière entre une zone d'entrée du cordon dans le dispositif d'enroulement et une zone d'enroulement du cordon sur le tambour d'enroulement.A ring adapted to be threaded on the drum is substantially a complete turn. The ring, once threaded along the drum, bears on the shoulder of the drum. It comprises on the one hand an extension to maintain it vis-à-vis the support and maintain the ladder in his groove forming a lid. The ring is provided on the other hand with at least one main lug extending substantially radially and forming a guide for the cord, the guide being delimited at least by this main leg and the ring. When the ring is mounted vis-à-vis the support, the passage for the cord is delimited by the ring, the main leg and the support. The ring defines a boundary between a cord entry zone in the winding device and a winding zone of the cord on the winding drum.

Lorsque le dispositif d'enroulement est monté vis-à-vis du store vénitien, l'échelle passe au travers de l'orifice du support et est maintenue dans la gorge. Le cordon de suspension passe au travers de l'orifice du support et est conduit, au travers du passage décrit précédemment d'un autre côté de l'anneau où il peut s'enrouler sur le tambour d'enroulement.When the winding device is mounted vis-à-vis the Venetian blind, the ladder passes through the hole of the support and is held in the groove. The suspension cord passes through the orifice of the support and is led through the passage described above on the other side of the ring where it can be wound on the winding drum.

L'anneau forme une barrière circulaire au-delà de laquelle viennent se forment les spires. Le point d'entrée du cordon dans le dispositif se situant de l'autre côté de cette barrière, le risque qu'une spire vienne par exemple en l'absence de charge se déplacer vers la gorge est considérablement minimisé, voire annulé. Par rapport à l'art antérieur cité, notamment au document EP 1 577 483 , le désalignement volontairement introduit entre le point d'accès du cordon de suspension et l'emplacement de formation des spires sur le tambour est parfaitement maîtrisé, y compris lorsque le tambour dispose d'un jeu axial. En effet, les spires se forment contre l'anneau et non pas contre un élément solidaire du tambour.The ring forms a circular barrier beyond which the turns are formed. The point of entry of the cord into the device located on the other side of this barrier, the risk that a coil comes for example in the absence of load move to the groove is considerably minimized or canceled. Compared to the cited prior art, particularly to the document EP 1 577 483 misalignment voluntarily introduced between the access point of the suspension cord and the location of formation of the turns on the drum is perfectly controlled, including when the drum has an axial play. Indeed, the turns are formed against the ring and not against an element integral with the drum.

De plus, l'aspect de protection et de guidage efficace du cordon est renforcé par la réalisation du passage fermé, délimité par le support, l'anneau et la patte principale.In addition, the appearance of protection and effective guiding of the cord is reinforced by the realization of the closed passage, delimited by the support, the ring and the main leg.

Du fait de l'appui sur l'épaulement, l'anneau est lié axialement à la fois au tambour et au support. Il contribue à éviter un décalage non maîtrisé entre le point d'entrée du cordon de suspension et le point d'enroulement des spires. Ainsi, le montage est simple et sûr.Due to the support on the shoulder, the ring is axially connected to both the drum and the support. It helps to avoid an uncontrolled shift between the point of entry of the suspension cord and the winding point of the turns. Thus, the assembly is simple and safe.

La liaison mécanique entre le tambour et le support peut également prendre une forme de couvercle, comme décrit plus haut. Ce couvercle présente plusieurs avantages : en particulier, il permet de maintenir l'échelle dans la gorge pendant le montage de l'ensemble du store et en cas de soulèvement du store. Ensuite, il permet de former également un couvercle de fermeture de la gorge dans le cas où une spire détendue du cordon de suspension passerait au moins partiellement de l'autre côté de l'anneau.The mechanical connection between the drum and the support can also take the form of a lid, as described above. This cover has several advantages: in particular, it allows to maintain the ladder in the groove during assembly of the entire blind and in case of lifting the blind. Then, it also forms a cover closing the groove in the case where a relaxed coil of the suspension cord would pass at least partially on the other side of the ring.

La combinaison avec le support permet d'obtenir un montage facile et un ensemble très simplifié par rapport aux dispositifs de l'état de l'art, tout en conservant les fonctionnalités utiles et en apportant des solutions par rapport aux problèmes définis.The combination with the support makes it possible to obtain an easy assembly and a very simplified set compared to the devices of the state of the art, while preserving the useful functionalities and providing solutions with respect to the defined problems.

Pour simplifier la représentation, une partie seulement des spires formées sur le dispositif d'enroulement est représentée sur les figures.To simplify the representation, only part of the turns formed on the winding device is shown in the figures.

Le dispositif d'enroulement 1 comprend un arbre d'enroulement 2 comprenant d'une part une gorge 5 destinée à recevoir une boucle de cordon d'orientation, et d'autre part un tambour d'enroulement 3 de forme légèrement conique muni à son extrémité proche de la gorge, d'un épaulement 4. Une pièce 31 permet de fermer le tambour creux à l'extrémité opposée à l'épaulement.The winding device 1 comprises a winding shaft 2 comprising on the one hand a groove 5 intended to receive a loop of orientation cord, and on the other hand a winding drum 3 of slightly conical shape provided with its end close to the groove, a shoulder 4. A piece 31 closes the hollow drum at the end opposite the shoulder.

L'arbre d'enroulement 2 est monté tournant suivant son axe longitudinal 6 dans un support 7. Ce support comprend une première ouverture 8 circulaire pour le passage du cordon de suspension 11 et une deuxième ouverture 9 pour le passage des cordons d'orientation 10. L'ouverture 9 a une forme de U aplati au creux duquel se situe l'ouverture 8. Cette configuration permet d'introduire les cordons sensiblement dans un même plan.The winding shaft 2 is rotatably mounted along its longitudinal axis 6 in a support 7. This support comprises a first circular opening 8 for the passage of the suspension cord 11 and a second opening 9 for the passage of the orientation cords 10 The opening 9 has a U-shape flattened at the bottom of which the opening 8 is located. configuration allows to introduce the cords substantially in the same plane.

Une pièce de séparation 12 indépendante comprend un anneau 13 enfilé sur le tambour d'enroulement 3 et venant en appui sur l'épaulement 4 du tambour 3. L'épaulement et l'anneau forment des surfaces de contact permettant une rotation aisée du tambour. Le diamètre intérieur de l'anneau est sensiblement égal (au jeu fonctionnel de rotation près) au diamètre extérieur maximal du tambour et inférieur au diamètre de l'épaulement. Le diamètre extérieur de l'anneau peut être supérieur au diamètre de l'épaulement. La face 131 de l'anneau 13 tournée vers le tambour d'enroulement 3 peut présenter une inclinaison par rapport au plan perpendiculaire à l'axe de l'arbre d'enroulement 2. Cette inclinaison permet de décaler la première spire de manière à libérer un espace suffisant pour la suivante et ainsi favoriser le décalage des spires dans la direction du tambour d'enroulement 3. Ainsi, le risque de chevauchement des spires est diminué.An independent separating piece 12 comprises a ring 13 threaded onto the winding drum 3 and bearing on the shoulder 4 of the drum 3. The shoulder and the ring form contact surfaces for easy rotation of the drum. The inner diameter of the ring is substantially equal (with the functional clearance of rotation close) to the maximum outer diameter of the drum and less than the diameter of the shoulder. The outer diameter of the ring may be greater than the diameter of the shoulder. The face 131 of the ring 13 facing the winding drum 3 may have an inclination relative to the plane perpendicular to the axis of the winding shaft 2. This inclination makes it possible to shift the first turn so as to release sufficient space for the next and thus favor the offset of the turns in the direction of the winding drum 3. Thus, the risk of overlapping turns is decreased.

De l'anneau 13 part une première patte principale 14 radiale dans le plan de l'anneau, orientée globalement dans la direction d'arrivée du cordon au niveau du dispositif d'enroulement. Le plan de l'anneau est perpendiculaire à l'axe 6 de l'arbre d'enroulement.From the ring 13 starts a first main tab 14 radial in the plane of the ring, oriented generally in the direction of arrival of the cord at the winding device. The plane of the ring is perpendicular to the axis 6 of the winding shaft.

L'anneau 13, notamment la surface 131, et la première patte principale 14 délimitent deux zones distinctes, une première zone d'arrivée du cordon 11 d'un côté de l'anneau (faisant face à la gorge) (aussi appelée zone d'entrée) et une deuxième zone d'enroulement du cordon de suspension 11 de l'autre côté de l'anneau (faisant face au tambour 3), c'est-à-dire de chaque côté du plan dans lequel se trouve l'anneau et la patte principale ou de chaque côté du plan de la surface 131. La frontière entre les zones d'entrée et d'enroulement est représentée par le plan 132.The ring 13, in particular the surface 131, and the first main leg 14 define two distinct zones, a first arrival zone of the cord 11 on one side of the ring (facing the throat) (also called zone d and a second winding zone of the suspension cord 11 on the other side of the ring (facing the drum 3), i.e. on each side of the plane in which the ring and the main leg or on each side of the plane of the surface 131. The boundary between the entry and winding areas is represented by the plane 132.

La première patte principale 14 définit avec l'anneau un passage 150 pour le cordon de suspension 11 de sorte que celui-ci puisse passer d'une zone à l'autre mais uniquement dans une zone délimitée d'une part par la jonction entre l'anneau et la patte principale 14 et non pas n'importe où sur le pourtour de l'anneau 13. Cette zone présente notamment une étendue angulaire mesurée depuis l'axe du tambour limitée, l'étendue angulaire est représentée par l'angle α sur la figure 4. La patte principale 14 peut donc influer sur la direction de l'effort de traction sur le cordon, effort tangent au tambour d'enroulement 3 dans un plan perpendiculaire à l'axe de l'arbre, et contraint le cordon à arriver sur le tambour d'enroulement 3 en une zone précise du périmètre du tambour 3. La patte principale 14 peut prendre la forme d'un pied pour l'anneau 13. Avantageusement, il est prévu une deuxième patte principale 14 symétrique par rapport au diamètre vertical de l'anneau. Ces deux pattes principales contribuent à la stabilité de l'anneau 13 lors de la rotation du tambour, de manière à ce qu'il ne soit pas entraîné en rotation par le tambour 3 et qu'il ne se déforme pas depuis son point d'attache sur le support. Ainsi, les pattes principales constituent un moyen de limitation de la rotation de l'anneau par rapport au support.The first main tab 14 defines with the ring a passage 150 for the suspension cord 11 so that it can pass from one zone to another but only in an area delimited on the one hand by the junction between the ring and the main tab 14 and not anywhere on the periphery of the ring 13. This area has in particular an angular extent measured from the axis of the limited drum, the angular extent is represented by the angle α on the figure 4 . The main leg 14 can therefore influence the direction of the tensile force on the cord, force tangent to the winding drum 3 in a plane perpendicular to the axis of the shaft, and forces the cord to arrive on the drum 3 to a precise zone of the perimeter of the drum 3. The main leg 14 may take the form of a foot for the ring 13. Advantageously, there is provided a second main leg 14 symmetrical with respect to the vertical diameter of the 'ring. These two main legs contribute to the stability of the ring 13 during the rotation of the drum, so that it is not rotated by the drum 3 and it does not deform from its point of attach to the support. Thus, the main legs constitute a means of limiting the rotation of the ring relative to the support.

Cette patte principale symétrique à la première a également pour avantage de permettre de guider le cordon 11 également lorsqu'il est enroulé dans un deuxième sens d'enroulement autour du tambour 3.This main tab symmetrical to the first also has the advantage of allowing to guide the cord 11 also when it is wound in a second winding direction around the drum 3.

Quand le tambour tourne dans un sens d'enroulement du cordon de suspension 11, une patte principale récupère le cordon et l'autre empêche la rotation de la pièce 12 et si l'on change le sens de rotation, les fonctions sont inversées.When the drum rotates in a winding direction of the suspension cord 11, a main tab retrieves the cord and the other prevents the rotation of the part 12 and if we change the direction of rotation, the functions are reversed.

Une fois l'assemblage du dispositif réalisé, le support 7 ferme le passage 150 délimité par l'anneau 13 et la première patte principale 14. Le cordon de suspension 11 est alors guidé depuis l'ouverture 8 du support par dessous l'anneau et jusqu'au tambour d'enroulement. Un éventuel mouvement du cordon vers le haut du tambour est bloqué par une des pattes principales 14.Once the device has been assembled, the support 7 closes the passage 150 delimited by the ring 13 and the first main leg 14. The cord suspension 11 is then guided from the opening 8 of the support from below the ring and to the winding drum. Any movement of the cord towards the top of the drum is blocked by one of the main legs 14.

Une ou plusieurs pattes auxiliaires 16 axiales s'étendent à partir de l'anneau suivant l'axe de l'arbre d'enroulement dans la direction du tambour 3. Chaque patte auxiliaire 16 est distante du tambour d'enroulement 3, la distance d1 étant déterminée légèrement supérieure au diamètre standard des cordons de suspension. La ou les pattes auxiliaires 16 chapeautent au moins une partie des spires sur le tambour d'enroulement 3 de manière à éviter leur chevauchement sur cette partie du tambour.One or more axial auxiliary tabs 16 extend from the ring along the axis of the winding shaft in the direction of the drum 3. Each auxiliary leg 16 is distant from the winding drum 3, the distance d1 being determined slightly greater than the standard diameter of the suspension cords. The auxiliary tab or tabs 16 cap at least part of the turns on the winding drum 3 so as to avoid their overlap on this part of the drum.

La pièce de séparation 12 comprend une extension 17 axiale s'étendant à partir de l'anneau suivant l'axe de l'arbre d'enroulement dans la direction opposée à celle du tambour 3. Cette extension 17 comprend des moyens d'accrochage 171, coopérant avec des moyens correspondant sur le support 7. La pièce de séparation 12 peut ainsi être fixée au support 7. Les moyens d'accrochage 171 sont des éléments plastiques légèrement élastiques permettant une liaison rapide et détachable.The separating piece 12 comprises an axial extension 17 extending from the ring along the axis of the winding shaft in the direction opposite to that of the drum 3. This extension 17 comprises attachment means 171 , cooperating with corresponding means on the support 7. The separation piece 12 can thus be fixed to the support 7. The attachment means 171 are slightly elastic plastic elements for quick and detachable connection.

Outre sa fonction d'assemblage, l'extension 17 sert également de couvercle pour la gorge 5, ce qui permet de maintenir l'échelle dans la gorge si par exemple l'ensemble du store et par conséquent l'échelle, sont soulevés.In addition to its assembly function, the extension 17 also serves as a cover for the groove 5, which keeps the ladder in the groove if for example the entire blind and therefore the ladder, are raised.

En fonctionnement en charge, la pièce de séparation 12 vient en appui axial sur l'épaulement 4 du tambour d'enroulement 3 qui s'appuie sur le support. Le tambour se trouve maintenu axialement par l'assemblage du support 7 et de la pièce de séparation 12. L'écart entre le point d'arrivée du cordon 11 et le point d'enroulement du cordon est donc maîtrisé, ce qui évite les variations de distance et les risques de basculement du cordon de suspension 11 dans la gorge 5 destinées au cordon d'orientation 10. Il est toutefois possible de conserver un jeu axial pour l'arbre d'enroulement 2 afin de faciliter le montage et d'éviter une trop grande friction entre le tambour d'enroulement (ou l'épaulement de celui-ci) et l'anneau de la pièce de séparation 12.In operation under load, the separation piece 12 bears axially on the shoulder 4 of the winding drum 3 which rests on the support. The drum is held axially by the assembly of the support 7 and the separating part 12. The gap between the end point cord 11 and the winding point of the cord is controlled, which avoids variations in distance and the risk of tilting of the suspension cord 11 in the groove 5 for the orientation cord 10. It is possible, however, to keep an axial clearance for the winding shaft 2 to facilitate assembly and to avoid excessive friction between the winding drum (or the shoulder thereof) and the ring of the separating piece 12 .

Par « limitation de la mobilité angulaire du cordon autour du tambour », on entend notamment limitation de l'étendue, mesurée angulairement depuis l'axe du tambour, de l'ensemble des positions que peut prendre le cordon au niveau de son passage de la zone d'entrée à la zone d'enroulement.By "limitation of the angular mobility of the cord around the drum" is meant limitation of the extent, measured angularly from the axis of the drum, of all the positions that can take the cord at its passage of the drum. entrance area to the winding area.

Claims (14)

Dispositif d'enroulement (1) d'un cordon (11) de suspension de store comprenant : - un arbre d'enroulement (2) supportant un tambour d'enroulement (3) sur lequel le cordon vient s'enrouler lors d'une rotation de l'arbre autour de son axe pour déplacer le store, - au moins un support (7) de l'arbre d'enroulement servant de palier à l'arbre, - un anneau fermé (13) entourant le tambour d'enroulement et dont une des faces (131) forme une surface d'appui pour le cordon lorsqu'il s'enroule sur le tambour d'enroulement, la surface d'appui délimitant selon l'axe (6) de l'arbre d'enroulement une zone d'entrée (200) du cordon dans le dispositif d'enroulement et une zone d'enroulement (100) du cordon sur le tambour,
caractérisé en ce qu'il comprend un passage de guidage (150) du cordon de la zone d'entrée à la zone d'enroulement, le passage de guidage limitant, angulairement autour du tambour, la mobilité du cordon.Device for winding (1) a bead (11) of blind suspension comprising: - a winding shaft (2) supporting a winding drum (3) on which the cord is wound during a rotation of the shaft about its axis to move the blind, at least one support (7) of the winding shaft serving as a bearing on the shaft, - a closed ring (13) surrounding the winding drum and one of the faces (131) forms a bearing surface for the bead when it is wound on the winding drum, the bearing surface defining along the axis (6) of the winding shaft an inlet zone (200) of the cord in the winding device and a winding zone (100) of the cord on the drum ,
characterized in that it comprises a guide passage (150) of the cord from the entry zone to the winding zone, the guiding passage limiting, angularly around the drum, the mobility of the cord. Dispositif d'enroulement selon la revendication 1, caractérisé en ce que le passage de guidage est défini par l'anneau.Winding device according to claim 1, characterized in that the guide passage is defined by the ring. Dispositif d'enroulement selon l'une des revendications précédentes, caractérisé en ce que l'anneau comprend au moins une première patte principale (14) s'étendant dans une direction sensiblement perpendiculaire à l'axe de l'arbre, cette première patte principale coopérant avec le support pour définir le passage de guidage.Winding device according to one of the preceding claims, characterized in that the ring comprises at least a first main leg (14) extending in a direction substantially perpendicular to the axis of the shaft, this first main leg cooperating with the support to define the guide passage. Dispositif d'enroulement selon la revendication précédente, caractérisé en ce que la première patte principale s'étend sensiblement dans le plan de l'anneau et forme une surface de guidage pour le cordon lors d'un mouvement de celui-ci au-delà du passage de guidage.Winding device according to the preceding claim, characterized in that the first main tab extends substantially in the plane of the ring and forms a guide surface for the cord during a movement thereof beyond the guiding passage. Dispositif d'enroulement selon la revendication 3 ou 4, caractérisé en ce que la première patte principale est en appui sur le support.Winding device according to claim 3 or 4, characterized in that the first main leg bears on the support. Dispositif d'enroulement selon l'une des revendications précédentes, caractérisé en ce que le tambour d'enroulement comprend un épaulement (4) limitant la liberté axiale de l'anneau par rapport au tambour.Winding device according to one of the preceding claims, characterized in that the winding drum comprises a shoulder (4) limiting the axial freedom of the ring relative to the drum. Dispositif d'enroulement selon l'une des revendications précédentes, caractérisé en ce qu'il comprend un moyen (14) de limitation de la rotation de l'anneau par rapport au support.Winding device according to one of the preceding claims, characterized in that it comprises means (14) for limiting the rotation of the ring relative to the support. Dispositif d'enroulement selon la revendication précédente, caractérisé en ce que le moyen de limitation de la rotation comprend une deuxième patte principale (14) symétrique à la première.Winding device according to the preceding claim, characterized in that the means for limiting the rotation comprises a second main leg (14) symmetrical to the first. Dispositif d'enroulement selon l'une des revendications précédentes, caractérisé en ce que l'anneau comprend un diamètre intérieur sensiblement égal au diamètre maximal du tambour d'enroulement.Winding device according to one of the preceding claims, characterized in that the ring comprises an inner diameter substantially equal to the maximum diameter of the winding drum. Dispositif d'enroulement selon l'une des revendications précédentes, caractérisé en ce que l'anneau présente une surface d'appui pour le cordon inclinée par rapport au plan normal à l'axe de l'arbre d'enroulement.Winding device according to one of the preceding claims, characterized in that the ring has a bearing surface for the cord inclined relative to the plane normal to the axis of the winding shaft. Dispositif d'enroulement selon la revendication précédente, caractérisé en ce que l'inclinaison de la surface d'appui est réalisée par variation de l'épaisseur, mesurée axialement, de l'anneau sur sa périphérie, la différence maximale d'épaisseur étant sensiblement supérieure au diamètre du cordon.Winding device according to the preceding claim, characterized in that the inclination of the bearing surface is achieved by varying the thickness, measured axially, of the ring on its periphery, the maximum difference in thickness being substantially greater than the diameter of the cord. Dispositif d'enroulement selon l'une des revendications précédentes, caractérisé en ce que l'anneau présente au moins une patte auxiliaire (16) s'étendant axialement à distance du tambour d'enroulement.Winding device according to one of the preceding claims, characterized in that the ring has at least one auxiliary lug (16) extending axially away from the winding drum. Dispositif d'enroulement selon l'une des revendications précédentes, caractérisé en ce que l'anneau comprend au moins une extension (17) s'étendant axialement dans la direction opposée au tambour d'enroulement et des moyens (171) d'accrochage de cette extension sur le support.Winding device according to one of the preceding claims, characterized in that the ring comprises at least one extension (17) extending axially in the opposite direction to the winding drum and means (171) for fastening this extension on the support. Dispositif d'enroulement selon la revendication précédente, caractérisé en ce que l'arbre d'enroulement comprend une gorge (5) destinée à recevoir un cordon d'orientation du store et en ce que l'extension forme un couvercle pour cette gorge.Winding device according to the preceding claim, characterized in that the winding shaft comprises a groove (5) intended to receive a bead of orientation of the blind and in that the extension forms a cover for this groove.
EP08154387A 2007-04-20 2008-04-11 Device for winding a suspension cord comprising means for guiding the cord Active EP1983143B1 (en)

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FR0702880A FR2915231B1 (en) 2007-04-20 2007-04-20 DEVICE FOR WINDING A SUSPENSION CORD COMPRISING A MEANS FOR GUIDING THE CORD.

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EP1983143B1 EP1983143B1 (en) 2012-03-21

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EP0554212A1 (en) 1992-01-30 1993-08-04 Somfy Winding mechanism for the suspension cords of a venetian blind
WO2001018346A1 (en) * 1999-09-09 2001-03-15 Silent Gliss International Ag Venetian blind
FR2847613A1 (en) * 2002-11-26 2004-05-28 Somfy Sas Blind/boat type shade maneuvering device, has rolling spool support formed by lower and upper parts fabricated by assembling passage holes to slide strands of strings, where lower part is attached to rails and upper part to spool
EP1577483A1 (en) 2004-03-18 2005-09-21 MOTTURA S.p.A. Device for winding a suspension cord of a blind
DE202006008012U1 (en) 2005-10-11 2006-08-31 Hung, Hans, Sihu Roller arrangement for a shutter or blind comprises a roller mounted in a housing of a shutter or blind and a guiding element mounted on one end of the roller and provided with an adjoining point against which a cord lies

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102733742A (en) * 2012-07-17 2012-10-17 苏州太丰玻璃饰品有限公司 Rope twisting structure of hollow glass built-in sun-shading device
US9903157B2 (en) 2013-10-01 2018-02-27 Hunter Douglas Industries B.V. Rail for an architectural covering
US10208534B2 (en) 2013-10-01 2019-02-19 Hunter Douglas Industries B.V. Rail for an architectural covering
US20160138331A1 (en) * 2014-11-17 2016-05-19 Teh Yor Co., Ltd. Window Shade and Actuating System Thereof
US9605477B2 (en) * 2014-11-17 2017-03-28 Teh Yor Co., Ltd. Window shade and actuating system thereof
US11434690B2 (en) * 2019-05-08 2022-09-06 Lutron Technology Company Llc Lift cord spool for a motorized treatment

Also Published As

Publication number Publication date
ATE550511T1 (en) 2012-04-15
FR2915231B1 (en) 2009-07-10
EP1983143B1 (en) 2012-03-21
FR2915231A1 (en) 2008-10-24

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