EP3029258B1 - Hubvorrichtung für eine schnurlose abdeckung - Google Patents

Hubvorrichtung für eine schnurlose abdeckung Download PDF

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Publication number
EP3029258B1
EP3029258B1 EP15181337.5A EP15181337A EP3029258B1 EP 3029258 B1 EP3029258 B1 EP 3029258B1 EP 15181337 A EP15181337 A EP 15181337A EP 3029258 B1 EP3029258 B1 EP 3029258B1
Authority
EP
European Patent Office
Prior art keywords
reel
cord
bottom rail
car
headrail
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.)
Active
Application number
EP15181337.5A
Other languages
English (en)
French (fr)
Other versions
EP3029258A1 (de
Inventor
Lin Chen
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.)
Nien Made Enterprise Co Ltd
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Nien Made Enterprise Co Ltd
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 Nien Made Enterprise Co Ltd filed Critical Nien Made Enterprise Co Ltd
Publication of EP3029258A1 publication Critical patent/EP3029258A1/de
Application granted granted Critical
Publication of EP3029258B1 publication Critical patent/EP3029258B1/de
Active 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
    • E06B9/262—Lamellar or like blinds, e.g. venetian blinds with flexibly-interconnected horizontal or vertical strips; Concertina blinds, i.e. upwardly folding flexible screens
    • E06B2009/2627—Cellular screens, e.g. box or honeycomb-like
    • 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
    • E06B2009/3222—Cordless, i.e. user interface without cords

Definitions

  • the present invention relates generally to a covering, and more particularly to a lifting device for a cordless covering.
  • cordless coverings There are various coverings for windows and doors, some of which are cordless coverings.
  • the cordless covering has no cord for user to pull to lift a covering material. Since no cord is left on the cordless covering, it may avoid the problem of strangling kids, and the covering looks fancier without the cord.
  • a conventional cordless covering is provided with an automatic lifting device to lift or lower a bottom rail of the covering material, see for example US Patent Publication No. 2007/0272364A1 .
  • the covering material could be slats, a cellular shade, a pleated blind, or other shades and blinds.
  • the covering is provided with lifting cords extending out of a headrail, passing through the covering material, and then fastened to the bottom rail.
  • the lifting cords are connected to the automatic lifting device in the headrail.
  • the automatic lifting device may reel in or out the lifting cords to lift or lower the bottom rail so as to lift or lower the covering material.
  • US Patent Publication No. 2004/0177933A1 discloses a cordless blind with an automatic lifting device.
  • the automatic lifting device includes a spring motor, a spool coupled to the spring motor, and two winding members. Two cords for lifting a bottom rail are wound around the winding members and connected with the spool. The spool is rotated by the spring motor to elevating or lowing a covering material through the cords.
  • the conventional automatic lifting device only provides a constant lifting force. Therefore, the user has to push the bottom rail harder to assist the automatic lifting device.
  • the other problem is that the bottom rail will never stop at the desired position, usually at a lower than desired position, because the weight of the bottom rail and the covering material will move the bottom rail downwards.
  • the cellular shade has many chambers therein which make the cellular shade compressible.
  • the cellular shade generates an internal shrinking force when it is extended.
  • some manufacturers provide the bottom rail some extra weights to offset the shrinking force of the cellular shade.
  • the heavy bottom rail makes the product heavier, the user have to push the bottom rail harder to lift the bottom rail and the cellular shade, and it still has the problem that the bottom rail cannot stop at the desired position, but lower than that.
  • the primary objective of the present invention is to provide a lifting device for a cordless covering, which may reduce the user's power for lifting the covering, and precisely stop the bottom rail at any desired position.
  • a lifting device for a cordless covering wherein the cordless covering includes a headrail, a bottom rail, and a covering material between the headrail and the bottom rail, comprising: a cord reel pivotable on the headrail to rotate in a first direction and in a second direction; a car receivable in the headrail to be moved toward or away from the cord reel; a driving module receivable in the headrail to drive the cord reel to rotate in the first direction, wherein the driving module includes a first reel, a second reel, and a mainspring; a connecting cord having opposite ends connected to the car and the cord reel; and a lifting cord, an end running around the car, and an opposite end extendable out of the headrail to be fastened to the bottom rail, whereby the car moves away from the cord reel to drive the cord reel to rotate in the second direction while the bottom rail is moved away from the headrail.
  • a wheel set receivable in the head rail wherein the wheel set includes a shaft for the lifting cord to run around.
  • the cord reel has a cone section, and a diameter of the cone section decreases from an end to an opposite end.
  • the connecting cord is reeled in the cone section of the cord reel when the cord reel rotates in the first direction, and the connecting cord is reeled out from the cone section of the cord reel when the cord reel rotates in the second direction.
  • the first reel is provided with a first gear
  • the second reel is provided with a second gear, to be meshed with the first gear of the first reel
  • the cord reel is provided with a third gear to be meshed with the second gear of the second reel
  • the mainspring has opposite ends connected to the first reel and the second reel respectively, whereby the mainspring is wound around the first reel or the second reel when the first reel and the second reel rotate in the first direction or in the second direction.
  • the car is provided with a shaft for the lifting cord to run around.
  • the lifting cord has opposite ends fastened to the car, and the bottom rail respectively.
  • the lifting cord has an end fastened to the wheel set, and then extends out of the headrail to be fastened to the bottom rail.
  • the cone-like cord reel and the driving module are helpful to precisely stop the bottom rail at any desired position.
  • a cordless covering 100 of the preferred embodiment of the present invention includes a headrail 10, a bottom rail 20, and a covering material between the headrail 10 and the bottom rail 20.
  • the covering material is a cellular shade 30.
  • the covering material could be a blanket or slats in other embodiments.
  • the cordless covering 100 is further provided with a lifting device received in the headrail 10, including a cord reel 40, a driving module, an auxiliary driving module, a wheel set 51, a car 52, a connecting cord 53, and two lifting cords 54.
  • the cord reel 40, the driving module and the auxiliary driving device are preinstalled at a side of the headrail 10 while the wheel set 51 and the car 52 are at the other side.
  • the cord reel 40 is a cone-like member vertically pivoted on the headrail 10 with a narrow end at bottom.
  • the cord reel 40 is controllable to rotate in a first direction (clockwise) and a second direction (counterclockwise).
  • the cord reel 40 is provided with a spiral groove on a circumference.
  • Two third gears 41 are connected to opposite ends of the cord reel 40. In an embodiment, only one third gear 41 is connected to the cord reel 40.
  • the cord reel 40 has a cone section and a straight section, wherein the cone section begins at the top end of the cord reel 40 and gradually narrows to the straight section, and the straight section has a constant diameter.
  • the cord reel 40 has the cone section only, and yet in another embodiment, the cone section has a concave surface. The cord reel 40 should keep that the top end is wider than the bottom end.
  • the driving module includes a first reel 42, a second reel 43, and a mainspring 44.
  • the first and the second reels 42, 43 are vertically pivoted on the headrail 10 for free rotation. Both a top end and a bottom end of the first reel 42 are provided with a first gear 45, and a top end and a bottom end of the second reel 43 are provided with a second gear 46.
  • the first gears 45 are meshed with the second gears 46, and the second gears 46 are meshed with the third gears 41, therefore the cord reel 40, the first reel 42, and the third reel 43 are linked to rotate together.
  • the first and the second reels 42, 43 each is provided with one gear only.
  • mainspring 44 Opposite ends of the mainspring 44 are connected to the first and the second reels 42, 43 respectively, therefore the mainspring 44 would be wound around the first and/or the second reels 42, 43 while the reels 42, 43 are rotating in different directions. While the mainspring 44 is being switched to be wound around the first or the second reels 42, 43, it will indirectly drive the cord reel 40 to rotate. In the present invention, while the mainspring 44 is wound around the first reel 42 ( FIG. 3 ), the mainspring 44 will force the second gear 46 to rotate in the second direction (counterclockwise), and to rotate the cord reel 40 in the first direction (clockwise).
  • the auxiliary driving device includes a third reel 47, a fourth reel 48, and a mainspring 49.
  • the third and the fourth reel 47, 48 are vertically pivoted on the headrail 10 while the fourth reel 48 is next to the first reel 42. Opposite ends of the mainspring 49 are connected to the third and the fourth reels 47, 48 respectively.
  • the fourth reel 48 is provided with two fourth gears 50 to be meshed with the first gears 45 of the first reel 42, and the third reel 47 has no gear.
  • the mainspring 49 would drive the fourth reel 48 to rotate to assist the mainspring 44 to rotate the second reel 43.
  • the wheel set 51 is fixed to the headrail 10, and has a shaft 51a.
  • the car 52 is capable to reciprocate in a space between the wheel set 51 and the cord reel 40.
  • the car 52 includes a body 52a, on which a shaft 52b and wheels 52c are provided.
  • the shaft 52b of the car 52 is parallel to the shaft 51a of the wheel set 51, and both the shafts 51a, 52b are perpendicular to the moving direction of the car 52.
  • the shafts 51a, 52b are provided with several grooves to receive the cords running around them.
  • the wheels 52c are pivoted on the body 52a to touch and move along the headrail that is helpful for a smooth reciprocation of the car 52.
  • the connecting cord 53 has opposite ends fastened to the body 52a of the car 52 and the cord reel 40 respectively.
  • the cord reel 40 When the cord reel 40 is rotating in the first direction (clockwise), it will move the car 52 toward the cord reel 40, and when the cord reel 40 is rotating in the second direction (counterclockwise), it will move the car 52 toward the wheel set 51.
  • the lifting cords 54 have ends fastened to the body 52a of the car 52, run around the shaft 51a of the wheel set 51 and the shaft 52b of the car 52 for several rounds, and then extend out of the headrail 10 and pass through the cellular shade 30 to be fastened to the bottom rail 20. While the bottom rail 20 is lifted or lowered, it will move the car 52 in different directions through the connecting cord 53 and the lifting cords 54.
  • the grooves on the shafts 51a, 52b makes the lifting cords 54 not twisting while the car 52 is moving.
  • the lifting cords 54 run around the shafts 51a, 52b one time each that makes the bottom rail 20 moves twice the distance as far as the car 52 moves.
  • the bottom rail 20 moves triple the distance as far as the car 52 far as the car 52 moves while the lifting cords 54 run around the shafts 51a, 52b and 51a again. It is easy to understand that the moving distance of the bottom rail 20 could be designated by changing the rounds of the lifting cords 54 running around the shafts 51a, 52b.
  • the number of the grooves on the shafts 51a, 52b can be varied according to the rounds of the lifting cords 54, such as 4 rounds, 5 rounds , 6 rounds, or more.
  • the arrangement of shafts 51a, 52b helps receiving the lifting cords 54 in the limited space of the headrail 10.
  • the mainsprings 44 and 49 work at the same time to rotate the cord reel 40 in the first direction (clockwise), and therefore to wind the connecting cord 53 around cone section of the cord reel 40 from the top end to the bottom end. Since the diameter of the cone section of the cord reel 40 gradually decreases, the torque provided by the cord reel 40 would increase while the cord reel 40 is rotating. As a result, the force to pull the car 52 is increasing to sustain the increasing loading while the bottom rail 20 is being lifted. With the help of the mainsprings 44 and 49, the bottom rail 20 shall precisely stopped at any desired position.
  • it provides the driving module only (without the auxiliary driving device) for a small covering which has a light bottom rail and a light covering material.
  • it can use multiple auxiliary driving modules in a large covering which has a heavy bottom rail and a heavy covering material.
  • the car 52 is pulled by the lifting cords 54 to move away from the cord reel 40. It rotates the cord reel 40 in the second direction (counterclockwise), and therefore the first and the second reels 42, 43 are rotated in opposite directions, and the mainspring 44 is gradually wound around the second reel 43 from the first reel 42 until the bottom rail 20 stops.
  • the mainsprings 44 and 49 and the cone section of the cord reel provide the driving torque to sustain the increasing loading that would make bottom rail 20 be lifted easier and precisely stopped at any position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Blinds (AREA)
  • Curtains And Furnishings For Windows Or Doors (AREA)

Claims (4)

  1. Eine Hebevorrichtung für eine schnurlose Abdeckung (100), wobei die schnurlose Abdeckung (100) eine Kopfschiene (10), eine untere Schiene (20) und ein Abdeckungsmaterial zwischen der Kopfschiene (10) und der unteren Schiene (20) aufweist, wobei die Hebevorrichtung aufweist:
    einen Schnuraufroller (40), der an der Kopfschiene (10) drehbar ist, um sich in einer ersten Richtung und in einer zweiten Richtung zu drehen,
    einen Wagen (52), der in der Kopfschiene (10) aufnehmbar ist, um zu dem Schnuraufroller (40) hin oder von diesem wegbewegt zu werden,
    ein Antriebsmodul, das in der Kopfschiene (10) aufnehmbar ist, um den Schnuraufroller (40) anzutreiben, um sich in der ersten Richtung zu drehen, wobei das Antriebsmodul einen ersten Aufroller (42), einen zweiten Aufroller (43) und eine Antriebsfeder (44) aufweist,
    eine Verbindungsschnur (53), die entgegengesetzte Enden hat, die mit dem Wagen (52) und dem Schnuraufroller (40) verbunden sind, und
    eine Hebeschnur (54), wobei ein Ende um den Wagen (52) herumläuft und ein entgegengesetztes Ende sich aus der Kopfschiene (10) heraus erstrecken kann, um an der unteren Schiene (20) befestigt zu sein, wodurch sich der Wagen (52) von dem Schnuraufroller (40) wegbewegt, um den Schnuraufroller (40) anzutreiben, um sich in der zweiten Richtung zu drehen, während die untere Schiene (20) von der Kopfschiene (10) wegbewegt wird,
    einen Radsatz (51), der in der Kopfschiene (10) aufnehmbar ist, wobei der Radsatz (51) einen Schaft (51a) aufweist, damit die Hebeschnur (54) darum herumläuft,
    wobei die Hebevorrichtung für eine schnurlose Abdeckung (100) dadurch gekennzeichnet ist, dass der Schnuraufroller (40) einen Kegelabschnitt aufweist und ein Durchmesser des Kegelabschnitts von einem Ende zu einem entgegengesetzten Ende kleiner wird,
    wobei die Verbindungsschnur (53) in dem Kegelabschnitt des Schnuraufrollers (40) aufgerollt wird, wenn sich der Schnuraufroller (40) in der ersten Richtung dreht, und die Verbindungsschnur (53) von dem Kegelabschnitt des Schnuraufrollers (40) abgerollt wird, wenn sich der Schnuraufroller (40) in der zweiten Richtung dreht, und
    wobei der erste Aufroller (42) mit einem ersten Zahnrad (45) versehen ist, der zweite Aufroller (43) mit einem zweiten Zahnrad (46) versehen ist, um mit dem ersten Zahnrad (45) des ersten Aufrollers (42) in Eingriff zu sein, und der Schnuraufroller (40) mit einem dritten Zahnrad (41) versehen ist, um mit dem zweiten Zahnrad (46) des zweiten Aufrollers (43) in Eingriff zu sein, wobei die Antriebsfeder (44) entgegengesetzte Enden hat, die mit dem ersten Aufroller (42) beziehungsweise mit dem zweiten Aufroller (43) verbunden sind, wodurch die Antriebsfeder (44) um den ersten Aufroller (42) oder den zweiten Aufroller (43) gewickelt ist, wenn sich der erste Aufroller (42) und der zweite Aufroller (43) in der ersten Richtung oder in der zweiten Richtung drehen.
  2. Die Hebevorrichtung für eine schnurlose Abdeckung (100) gemäß Anspruch 1, wobei der Wagen (52) mit einem Schaft (52a) versehen ist, damit die Hebeschnur (54) darum herumläuft.
  3. Die Hebevorrichtung für die schnurlose Abdeckung (100) gemäß Anspruch 1, wobei die Hebeschnur (54) entgegengesetzte Enden hat, die an dem Wagen (52) beziehungsweise der unteren Schiene (20) befestigt sind.
  4. Die Hebevorrichtung für die schnurlose Abdeckung (100) gemäß Anspruch 1, wobei die Hebeschnur (54) entgegengesetzte Enden hat, die an dem Radsatz (51) beziehungsweise der unteren Schiene (20) befestigt sind.
EP15181337.5A 2014-12-02 2015-08-18 Hubvorrichtung für eine schnurlose abdeckung Active EP3029258B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420745948.5U CN204402320U (zh) 2014-12-02 2014-12-02 无拉绳窗帘的升降控制结构

Publications (2)

Publication Number Publication Date
EP3029258A1 EP3029258A1 (de) 2016-06-08
EP3029258B1 true EP3029258B1 (de) 2018-10-10

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ID=53426193

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15181337.5A Active EP3029258B1 (de) 2014-12-02 2015-08-18 Hubvorrichtung für eine schnurlose abdeckung

Country Status (5)

Country Link
EP (1) EP3029258B1 (de)
JP (1) JP3201418U (de)
CN (1) CN204402320U (de)
AU (1) AU2015213287B2 (de)
TW (1) TWM516387U (de)

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Publication number Priority date Publication date Assignee Title
TWI737552B (zh) * 2020-11-30 2021-08-21 進東窗飾有限公司 窗簾拉升裝置

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CN107269203B (zh) * 2016-04-06 2019-05-17 亿丰综合工业股份有限公司 窗帘控制机构及其窗帘系统
TWI649492B (zh) * 2017-11-28 2019-02-01 陳柏宇 用於無外露拉繩式窗簾之阻力調整裝置
KR101957856B1 (ko) * 2018-01-23 2019-03-13 김대영 코드리스 차폐블라인드
AU2018232903B1 (en) * 2018-09-18 2020-03-19 Nien Made Enterprise Co., Ltd. Block and Tackle Window Blind
US11230881B2 (en) 2018-09-26 2022-01-25 Nien Made Enterprise Co., Ltd. Block and tackle window blind
JP7089571B2 (ja) 2020-11-09 2022-06-22 億豐綜合工業股▲分▼有限公司 二方向開閉式カーテン
US11473369B2 (en) 2020-12-01 2022-10-18 Nien Made Enterprise Co., Ltd. Top-down bottom-up window covering
CN114763729A (zh) * 2021-01-12 2022-07-19 敬祐科技股份有限公司 用于无外露拉绳式窗帘的可调式下扣
CN113047762B (zh) * 2021-02-05 2023-02-03 汉狮光动科技(广东)有限公司 一种升降式遮阳产品
CN113187368B (zh) * 2021-04-03 2023-03-24 佛山市南海荣好家窗饰制品有限公司 一种窗帘的改进结构
WO2023236030A1 (zh) * 2022-06-07 2023-12-14 东莞市雷富溢窗饰科技有限公司 无操作绳卷帘

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US7984745B2 (en) * 2007-12-20 2011-07-26 Nien Made Enterprise Co., Ltd. Cordless window blind structure
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TWM457502U (zh) * 2013-02-08 2013-07-21 Ya-Ying Lin 窗簾
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TWI737552B (zh) * 2020-11-30 2021-08-21 進東窗飾有限公司 窗簾拉升裝置

Also Published As

Publication number Publication date
AU2015213287B2 (en) 2016-09-29
CN204402320U (zh) 2015-06-17
EP3029258A1 (de) 2016-06-08
TWM516387U (zh) 2016-02-01
AU2015213287A1 (en) 2016-06-16
JP3201418U (ja) 2015-12-10

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