EP1983143A1 - Aufrollvorrichtung für eine Tragschnur mit einer Führung für die Schnur - Google Patents

Aufrollvorrichtung für eine Tragschnur mit einer Führung für die Schnur 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
English (en)
French (fr)
Other versions
EP1983143B1 (de
Inventor
Eric Lagarde
Norbert Guy Dupielet
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Somfy SA
Original Assignee
Somfy SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Somfy SA filed Critical Somfy SA
Publication of EP1983143A1 publication Critical patent/EP1983143A1/de
Application granted granted Critical
Publication of EP1983143B1 publication Critical patent/EP1983143B1/de
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Anticipated expiration legal-status Critical

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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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Blinds (AREA)
  • Storing, Repeated Paying-Out, And Re-Storing Of Elongated Articles (AREA)
EP08154387A 2007-04-20 2008-04-11 Aufrollvorrichtung für eine Tragschnur mit einer Führung für die Schnur Active EP1983143B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0702880A FR2915231B1 (fr) 2007-04-20 2007-04-20 Dispositif d'enroulement d'un cordon de suspension comprenant un moyen de guidage du cordon.

Publications (2)

Publication Number Publication Date
EP1983143A1 true EP1983143A1 (de) 2008-10-22
EP1983143B1 EP1983143B1 (de) 2012-03-21

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ID=38823524

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08154387A Active EP1983143B1 (de) 2007-04-20 2008-04-11 Aufrollvorrichtung für eine Tragschnur mit einer Führung für die Schnur

Country Status (3)

Country Link
EP (1) EP1983143B1 (de)
AT (1) ATE550511T1 (de)
FR (1) FR2915231B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102733742A (zh) * 2012-07-17 2012-10-17 苏州太丰玻璃饰品有限公司 一种中空玻璃内置遮阳装置绕绳结构
US20160138331A1 (en) * 2014-11-17 2016-05-19 Teh Yor Co., Ltd. Window Shade and Actuating System Thereof
US9903157B2 (en) 2013-10-01 2018-02-27 Hunter Douglas Industries B.V. Rail for an architectural covering
US11434690B2 (en) * 2019-05-08 2022-09-06 Lutron Technology Company Llc Lift cord spool for a motorized treatment

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1319645A (fr) 1962-04-11 1963-03-01 Hunter Douglas Int Quebec Ltd Jalousie
EP0554212A1 (de) 1992-01-30 1993-08-04 Somfy Wickelvorrichtung für die Aufhängungsseile eines Stores
WO2001018346A1 (de) * 1999-09-09 2001-03-15 Silent Gliss International Ag Lamellenstore
FR2847613A1 (fr) * 2002-11-26 2004-05-28 Somfy Sas Dispositif de manoeuvre d'un store suspendu
EP1577483A1 (de) 2004-03-18 2005-09-21 MOTTURA S.p.A. Wickelvorrichtung für die Aufhängungsseile eines Stores
DE202006008012U1 (de) 2005-10-11 2006-08-31 Hung, Hans, Sihu Eine Rollenvorrichtung für Rolläden und Jalousien

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1319645A (fr) 1962-04-11 1963-03-01 Hunter Douglas Int Quebec Ltd Jalousie
EP0554212A1 (de) 1992-01-30 1993-08-04 Somfy Wickelvorrichtung für die Aufhängungsseile eines Stores
WO2001018346A1 (de) * 1999-09-09 2001-03-15 Silent Gliss International Ag Lamellenstore
FR2847613A1 (fr) * 2002-11-26 2004-05-28 Somfy Sas Dispositif de manoeuvre d'un store suspendu
EP1577483A1 (de) 2004-03-18 2005-09-21 MOTTURA S.p.A. Wickelvorrichtung für die Aufhängungsseile eines Stores
DE202006008012U1 (de) 2005-10-11 2006-08-31 Hung, Hans, Sihu Eine Rollenvorrichtung für Rolläden und Jalousien

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102733742A (zh) * 2012-07-17 2012-10-17 苏州太丰玻璃饰品有限公司 一种中空玻璃内置遮阳装置绕绳结构
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
EP1983143B1 (de) 2012-03-21
ATE550511T1 (de) 2012-04-15
FR2915231A1 (fr) 2008-10-24
FR2915231B1 (fr) 2009-07-10

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