EP1645716B1 - Wickelvorrichtung für ein Rollo - Google Patents

Wickelvorrichtung für ein Rollo Download PDF

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Publication number
EP1645716B1
EP1645716B1 EP04077780A EP04077780A EP1645716B1 EP 1645716 B1 EP1645716 B1 EP 1645716B1 EP 04077780 A EP04077780 A EP 04077780A EP 04077780 A EP04077780 A EP 04077780A EP 1645716 B1 EP1645716 B1 EP 1645716B1
Authority
EP
European Patent Office
Prior art keywords
winding
drum
drum portion
pull cord
smooth
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.)
Not-in-force
Application number
EP04077780A
Other languages
English (en)
French (fr)
Other versions
EP1645716A1 (de
Inventor
Ke-Min Lin
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT04077780T priority Critical patent/ATE421021T1/de
Priority to DE602004019091T priority patent/DE602004019091D1/de
Priority to EP04077780A priority patent/EP1645716B1/de
Publication of EP1645716A1 publication Critical patent/EP1645716A1/de
Application granted granted Critical
Publication of EP1645716B1 publication Critical patent/EP1645716B1/de
Not-in-force legal-status Critical Current
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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
    • E06B9/32—Operating, guiding, or securing devices therefor
    • E06B9/322—Details of operating devices, e.g. pulleys, brakes, spring drums, drives
    • 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 a winding device, more particularly to a winding device for a window blind.
  • U.S. Patent No. 5,328,113 discloses a conventional winding device for winding an end portion of a pull cord of a window blind.
  • the conventional winding device includes a winding drum, and an auxiliary drum that extends from the winding drum.
  • the end portion of the pull cord is secured to the winding drum.
  • the auxiliary drum has a diameter larger than that of the winding drum, and a distal end distal from the winding drum.
  • a shoulder extends radially from the distal end of the auxiliary drum.
  • a guide guides the pull cord such that the end portion of the pull cord is wound on the auxiliary drum and that the winding turns are pushed to move along the auxiliary drum toward the winding drum under the effect of the shoulder.
  • the aforementioned conventional winding device is disadvantageous in that the winding turns tend to overlap with each other while being formed when the number of winding turns is relatively large. This results in entanglement of the winding turns when the winding turns are unwound from the winding device.
  • the object of the present invention is to provide a winding device that is capable of overcoming the aforesaid drawbacks of the prior art.
  • a winding device which is applied to a window blind, includes a headrail, a winding drum, a pull cord, a carriage member, and a guide member.
  • the headrail extends in a longitudinal direction.
  • the winding drum extends in the longitudinal direction, is mounted on the headrail, is operable so as to rotate relative to the headrail, and has a threaded drum portion, and a smooth drum portion that extends from the threaded drum portion.
  • the pull cord extends through the headrail, and is secured to the smooth drum portion of the winding drum.
  • the carriage member threadedly engages the threaded drum portion, and is movable along the threaded drum portion in a first axial direction when the winding drum is rotated in a first rotational direction so as to wind the pull cord on the smooth drum portion of the winding drum, and in a second axial direction opposite to the first axial direction when the winding drum is rotated in a second rotational direction opposite to the first rotational direction, so as to unwind the pull cord from the smooth drum portion of the winding drum.
  • the guide member is coupled to the carriage member so as to be co-movable therewith, and has a distal end distal from the carriage member, and connected to and in sliding contact with the pull cord so as to guide the pull cord such that winding turns of the pull cord on the smooth drum portion of the winding drum are formed adjacent to one another without overlapping.
  • the first preferred embodiment of a winding device 1 is shown to include a headrail 2, a winding drum 4, a pull cord 5, a carriage member 61, and a guide member 62.
  • the winding device 1 is applied to a window blind, such as a Venetian blind, that includes a plurality of slats 91 disposed under and parallel to the headrail 2, and a bottom rail (not shown) disposed under and parallel to the slats 91.
  • a window blind such as a Venetian blind
  • a bottom rail not shown
  • the headrail 2 extends in a longitudinal direction, and is adapted to be mounted on a wall (not shown) above a window (not shown).
  • the winding drum 4 extends in the longitudinal direction, is mounted on the headrail 2, and has a threaded drum portion 41, and a smooth drum portion 42 that extends from the threaded drum portion 41.
  • the winding drum 4 is operable so as to rotate relative to the headrail 2.
  • the winding drum 4 is made from a plastic material.
  • the threaded drum portion 41 and the smooth drum portion 42 are formed in a single piece.
  • the pull cord 5 is operable so as to raise and lower the slats 91.
  • the pull cord 5 has a lower end portion 51 that extends through the slats 91 and that is connected to the bottom rail, and an upper end portion 52 that is opposite to the lower end portion 51, that extends through the headrail 2, and that is secured to the smooth drum portion 42 of the winding drum 4.
  • the smooth drum portion 42 of the winding drum 4 is formed with a hole 420 therethrough.
  • the upper end portion 52 of the pull cord 5 is secured to the smooth drum portion 42 by extending the upper end portion 52 of the pull cord 5 through the hole 420 and then by subsequently forming a knot (not shown) at the upper end portion 52 of the pull cord 5.
  • the carriage member 61 is U-shaped, and has a pair of vertical arms, and a horizontal arm that interconnects the vertical arms.
  • the arms of the carriage member 61 are formed with a screw thread that threadedly engages the threaded drum portion 41 of the winding drum 4.
  • the carriage member 61 is movable along the threaded drum portion 41 in a first axial direction, as indicated by the arrow (A1), when the winding drum 4 is rotated in a first rotational direction, as indicated by the arrow (R1) , so as to wind the pull cord 5 on the smooth drum portion 42 of the winding drum 4.
  • the carriage member 61 is further movable in a second axial direction, as indicated by the arrow (A2), opposite to the first axial direction when the winding drum 4 is rotated in a second rotational direction, as indicated by the arrow (R2) , opposite to the first rotational direction so as to unwind the pull cord 5 from the smooth drum portion 42 of the winding drum 4. It is noted that the carriage member 61 is limited by the headrail 2 against rotation when the winding drum 4 is rotated.
  • the guide member 62 extends from the carriage member 61, is coupled to the horizontal arm of the carriage member 61 so as to be co-movable therewith, and has a distal end 621 that is distal from the carriage member 61, and that is connected to and that is in sliding contact with the pull cord 5.
  • the guide member 62 is operable so as to guide the pull cord 5 such that winding turns of the pull cord 5 on the smooth drum portion 4 2 of the winding drum 4 are formed adj acent to one another without overlapping.
  • the guide member 62 is made from metal.
  • the guide member 62 may be made from plastic.
  • the distal end 621 of the guide member 62 is formed with a guiding hole 620.
  • the upper end portion 52 of the pull cord 5 extends through the guiding hole 620.
  • the guide member 62 is provided with a ring 622 that is disposed in the guiding hole 620, and that surrounds and that is in sliding contact with the pull cord 5, thereby minimizing the friction between the pull cord 5 and the distal end 621 of the guide member 62.
  • the winding device 1 further includes a driving mechanism 7 that drives rotation of the winding drum 4, and that includes a horizontal shaft 71, a rotary wheel 72, and a drive cord 73.
  • the horizontal shaft 71 extends in the longitudinal direction through the winding drum 4, is coupled to the winding drum 4 so as to be co-rotatable therewith, and is journalled within the headrail 2.
  • the rotary wheel 72 is sleeved securely on the horizontal shaft 71 so as to be co-rotatable therewith.
  • the drive cord 73 extends through the headrail 2, is connected to the rotary wheel 72, and is operable so as to drive rotation of the rotary wheel 72. Since the feature of this invention does not reside in the specific configuration of the driving mechanism 7, which is conventional in construction, a detailed description thereof is omitted herein for the sake of brevity.
  • the winding device 1 further includes a bracket 3 that supports the winding drum 4.
  • the bracket 3 includes a horizontal bracket part 31 that is disposed underneath the winding drum 4 and that has opposite ends, and a pair of vertical bracket parts 32, each of which extends from a respective one of the opposite ends of the horizontal bracket part 31.
  • the winding drum 4 has opposite ends, each of which is provided with a shank 43 that is journalled on a respective one of the vertical bracket parts 32
  • the drive cord 73 is operated to drive rotation of the rotary wheel 72 in the first rotational direction.
  • This results in rotation of the horizontal shaft 71 in the first rotational direction, which, in turn, results in rotation of the winding drum 4 in the first rotational direction and winding of the pull cord 5 on the smooth drum portion 42.
  • the rotation of the winding drum 4 enables axial movement of the carriage member 61 along the threaded drumportion 41 in the first axial direction.
  • the movement of the carriage member 61 is transmitted to move the guide member 62 to guide winding of the pull cord 5 on the smooth drum portion 42 such that winding turns are formed next to one another (see Figure 2 ) without overlapping.
  • threaded and smooth drum portions 41, 42 have the same diameter. In an alternative embodiment, the threaded and smooth drumportions 41, 42 have different diameters.
  • Figure 4 illustrates the second preferred embodiment of a winding device 1 according to this invention.
  • the threaded and smooth drum portions 41, 42 of the winding drum 4 are separate entities and are connected to each other through connecting means.
  • the threaded drum portion 41 has a coupling end 411 that has a diameter smaller than that of the smooth drum portion 41.
  • the smooth drum portion 42 has a coupling end 421 that is sleeved fittingly on the coupling end 411 of the threaded drum portion 41.
  • the smooth drum portion 42 has a flange 422 that is formed on the coupling end 421 thereof and that defines an annular groove 423.
  • the bracket 3 further includes a protrusion 33 that extends from the horizontal bracket part 31 into the annular groove 423, and that supports the junction of the coupling end 411 of the threaded drum portions 41 and the coupling end 421 of the smooth drum portion 42.
  • the smooth drum portion 42 is formed with, instead of the hole 420, a connecting groove 424, and is further formed with a slit 425 that is tapered toward and that is in spatial communication with the connecting groove 424.
  • the upper end portion 52 of the pull cord 5 is formed with a knot. The knot is slid along the slit 425 into the connecting groove 424, and is anchored on a periphery of the connecting groove 424. It is noted that the junction of the slit 425 and the connecting groove 424 has a width that is less than the diameter of the connecting groove 424.
  • Figures 5 and 6 illustrate the third preferred embodiment of a winding device 1 according to this invention.
  • the guide member 62 is provided with a limiting member 623 that is limited by the winding drum 4 so as to prevent sideward movement of the guide member 62 relative to the winding drum 4 during the raising operation of the slats 91.
  • the limiting member 623 extends from the guide member 62, is disposed adjacent to the guiding hole 620, is U-shaped, and has a pair of vertical arms, and a horizontal arm that interconnects the vertical arms.
  • the arms of the limiting member 623 are in sliding contact with the smooth drum portion 42 without hindering the axial movement of the carriage member 61 along the threaded drum portion 41, and rotation of the winding drum 4 relative to the headrail 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Blinds (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
  • Replacement Of Web Rolls (AREA)

Claims (10)

  1. Wickelvorrichtung (1) für ein Rollo, welches folgende Merkmale aufweist:
    eine Rahmenschiene (2), welche sich in einer Längsrichtung erstreckt;
    eine Wickeltrommel (4), welche sich in der Längsrichtung erstreckt und an der Rahmensschiene (2) montiert ist, und so betrieben werden kann, dass sie sich relativ zu der Rahmenschiene (2) dreht, und welche einen mit einem Gewinde versehenen Trommelabschnitt (41) und einen glatten Trommelabschnitt (42) aufweist, der sich von dem mit Gewinde versehenen Trommelabschnitt (41) erstreckt;
    eine Zugschnur (5), welche sich durch die Rahmenschiene (2) erstreckt, und welche an dem glatten Trommelabschnitt (42) der Wickeltrommel (4) befestigt ist;
    ein Kulissenglied (61), welches über ein Gewinde mit dem mit Gewinde versehenen Trommelabschnitt (41) verbunden ist und entlang dem mit Gewinde versehenen Trommelabschnitt (41) in einer ersten Axialrichtung bewegbar ist, wenn die Wickeltrommel (41) in einer ersten Drehrichtung gedreht wird, um die Zugschnur auf dem glatten Trommelabschnitt der Wickeltrommel aufzuwickeln, und in einer zweiten axialen Richtung entgegengesetzt zur ersten axialen Richtung bewegbar ist, wenn die Wickeltrommel in einer zweiten Drehrichtung entgegengesetzt zu der ersten Drehrichtung gedreht wird, um die Zugschnur (5) von dem schmalen Trommelabschnitt (42) der Wickeltrommel (4) abzuwickeln; und
    ein Führungsglied (62), welches mit dem Kulissenglied (61) gekoppelt ist, so dass es mit diesem mitbewegbar ist, und mit einem distalen Ende (61), welches distal von dem Kulissenglied (61) liegt und mit der Zugschnur (5) verbunden ist und mit dieser in Gleitkontakt steht, um die Zugschnur (5) so zu führen, dass Wickelwindungen der Zugschnur (5) auf dem glatten Trommelabschnitt (42) der Wickeltrommel (4) nebeneinander gebildet werden, ohne zu überlappen.
  2. Wickelvorrichtung nach Anspruch 1, wobei das distale Ende (621) des Führungsglieds (62) mit einem Führungsloch (620) gebildet ist, wobei die Zugschnur (5) sich durch das Führungsloch (620) erstreckt.
  3. Wickelvorrichtung nach Anspruch 1, mit einem Antriebsmechanismus (7) für einen Drehantrieb der Wickeltrommel (4), wobei der Antriebsmechanismus (7) folgende Merkmale aufweist:
    eine horizontale Welle (71), welche sich in der Längsrichtung durch die Wickeltrommel (4) erstreckt, welche mit der Wickeltrommel (4) so gekoppelt ist, dass sie mit dieser zusammen drehbar ist, und welche in der Rahmenschiene (2) verzapft ist,
    ein Drehrad (72), welches auf der horizontalen Welle (71) für eine gemeinsame Drehung mit dieser hülsenartig befestigt ist, und
    eine Antriebsschnur (73), welche sich durch die Rahmenschiene (2) erstreckt, welche mit dem Drehrad (72) verbunden ist, und welche so betreibbar ist, dass sie eine Drehung des Drehrads (72) antreibt.
  4. Wickelvorrichtung nach Anspruch 2, wobei das Führungsglied (62) mit einem Ring (622) versehen ist, welcher in dem Führungsloch (620) angeordnet ist, und welcher die Zugschnur (5) umgibt und mit dieser in Gleitkontakt steht.
  5. Wickelvorrichtung nach Anspruch 1, wobei der glatte Trommelabschnitt (42) und der mit Gewinde versehene Trommelabschnitt (41) als ein Stück gebildet sind.
  6. Wickelvorrichtung nach Anspruch 5, mit einer Gabel (3) zum Tragen der Wickeltrommel (4), wobei die Gabel (3) einen horizontalen Gabelabschnitt (31) aufweist, der unter der Wickeltrommel (4) angeordnet ist und zwei gegenüberliegende Enden aufweist und ein Paar vertikaler Gabelabschnitte (32) aufweist, welche sich jeweils von einem der gegenüberliegenden Enden des horizontalen Gabelabschnitts (31) erstrecken, wobei die Wickeltrommel (4) gegenüberliegende Enden hat, von denen jedes an einem entsprechenden der vertikalen Gabelabschnitte (32) verzapft ist.
  7. Wickelvorrichtung nach Anspruch 6, wobei der glatte Trommelabschnitt (42) ein Kupplungsende (421) aufweist, welches mit dem mit Gewinde versehenen Trommelabschnitt (41) gekoppelt ist, und einen Flansch (422) aufweist, welcher an dem Kupplungsende (421) gebildet ist und welcher eine Ringnut (423) hat, wobei die Gabel (3) außerdem einen Vorsprung (33) aufweist, welcher sich von dem horizontalen Gabelabschnitt (31) und in die Ringnut (423) erstreckt.
  8. Wickelvorrichtung nach Anspruch 1, wobei der glatte Trommelabschnitt (42) mit einer Verbindungsnut (424) geformt ist, wobei die Zugschnur (5) einen Endabschnitt (52) aufweist, welcher in der Verbindungsnut (424) befestigt ist.
  9. Wickelvorrichtung nach Anspruch 8, wobei der glatte Trommelabschnitt (42) außerdem mit einem Schlitz (425) gebildet ist, welcher zu der Verbindungsnut (424) schräg verläuft und in räumlicher Kommunikation mit dieser steht.
  10. Wickelvorrichtung nach Anspruch 1, wobei das Führungsglied (62) mit einem Begrenzungsglied (623) zum Begrenzen einer seitwärts gerichteten Bewegung des Führungsglieds (62) versehen ist, wobei sich das Begrenzungsglied (623) von dem Führungsglied (62) erstreckt und in Gleitkontakt mit dem glatten Trommelabschnitt (42) steht.
EP04077780A 2004-10-08 2004-10-08 Wickelvorrichtung für ein Rollo Not-in-force EP1645716B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT04077780T ATE421021T1 (de) 2004-10-08 2004-10-08 Wickelvorrichtung für ein rollo
DE602004019091T DE602004019091D1 (de) 2004-10-08 2004-10-08 Wickelvorrichtung für ein Rollo
EP04077780A EP1645716B1 (de) 2004-10-08 2004-10-08 Wickelvorrichtung für ein Rollo

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04077780A EP1645716B1 (de) 2004-10-08 2004-10-08 Wickelvorrichtung für ein Rollo

Publications (2)

Publication Number Publication Date
EP1645716A1 EP1645716A1 (de) 2006-04-12
EP1645716B1 true EP1645716B1 (de) 2009-01-14

Family

ID=34928556

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04077780A Not-in-force EP1645716B1 (de) 2004-10-08 2004-10-08 Wickelvorrichtung für ein Rollo

Country Status (3)

Country Link
EP (1) EP1645716B1 (de)
AT (1) ATE421021T1 (de)
DE (1) DE602004019091D1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1021084B1 (nl) * 2014-07-23 2016-03-16 Shadow-lnside NV Koordomleider voor gordijnsystemen
EP2977539A1 (de) * 2014-07-23 2016-01-27 Shadow-Inside NV Schnur-umlenker für vorhangsysteme

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH408694A (de) * 1962-01-26 1966-02-28 Umbralux Ag Zug- und Verstelleinrichtung für Lamellenstoren
US5103888A (en) * 1990-12-28 1992-04-14 Tachikawa Corporation Blind slats lifting device
FR2728933A1 (fr) * 1995-01-04 1996-07-05 Somfy Dispositif d'enroulement de cordon de suspension de stores

Also Published As

Publication number Publication date
EP1645716A1 (de) 2006-04-12
ATE421021T1 (de) 2009-01-15
DE602004019091D1 (de) 2009-03-05

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