AU2002210387A1 - A raising and lowering mechanism, in particular for roller blinds - Google Patents
A raising and lowering mechanism, in particular for roller blindsInfo
- Publication number
- AU2002210387A1 AU2002210387A1 AU2002210387A AU2002210387A AU2002210387A1 AU 2002210387 A1 AU2002210387 A1 AU 2002210387A1 AU 2002210387 A AU2002210387 A AU 2002210387A AU 2002210387 A AU2002210387 A AU 2002210387A AU 2002210387 A1 AU2002210387 A1 AU 2002210387A1
- Authority
- AU
- Australia
- Prior art keywords
- pulley
- ball
- cord
- balls
- raising
- 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
Links
Description
A raising and lowering mechanism, in particular for roller blinds.
The invention relates to a raising and lowering mechanism, in particular for roller blinds which use endless ball cords. When one end of the dangling part of such a ball cord is pulled, a pulley is rotated which is provided with pockets for the balls whereby it has the appearence of a kind of chain wheel. Slipping of the ball cord is thereby avoided. The pulley is connected to a drum or a carrier tube around which the roller blind is rolled. When one of the dangling parts is pulled, the roller blind is raised against the resistance created by the roller blind, and when the other part is pulled the roller blind is again lowered. Fixing in a desired condition is obtained by latching a ball on the ball cord under a catch which may be fastened to a window frame.
In case of heavy roller blinds the load on the individual separators between the pockets on the pulley (corresponding to sprockets in a chain wheel) becomes very severe, i particular in case of a small diameter, and it reduces the utility of this construction. It makes the use of a friction device for fixing without the use of a catch more difficult. It is the purpose of the invention to provide a construction which transmits the forces from a pull in the ball cord to the pulley in a more efficient manner.
This is obtained according to the invention in that the ball cord is wound at least VΛ times around the pulley which is designed with increased width and in which the pockets for receiving the balls have an enlarged axial extent. Hereby a force is transmitted from a larger number of balls, and simultaneously an axial displacement of the two ball cords which makes it easier to distinguish them from one another when the correct one has to be chosen for rasing or lowering.
In an advantageous embodiment there is mounted a body parallel to the axis of the pulley at a distance from the edge of the pulley which is less than the diameter of a ball and with an axial extent corresponding to that of the pulley. Hereby it is achieved that the ball cord which has been wound during assembly cannot be
removed from the pulley, irrespective of any position assumed by the roller blind. When it is mounted on e.g. a pivot-hung window it is essential that the operation is not influenced by the instant angular position of the window.
In a further advantageous embodiment of the invention the ball cord is wound several times (plus lΛ) around the pulley. Hereby a well-defined further displacement of the vertical placement is obtaind, and there is simultaneously the possibility to reduce the assortment of endless ball cords, because superfluous lenghts of ball cord may simply be wound around the pulley (which should properly be termed drum when there is space for many windings) during mounting.
The invention will be described in greater detail with reference to the drawing, which in perspective representation shows the following;
Fig. la shows the spatial arrangement of a ball cord,
Fig. lb shows the corresponding pulley,
Fig. 2 shows the ball cord fitted to the pulley, and Fig. 3 shows the pulley with a ball cord and a partly raised roller blind.
None of the figures shows fittings or the like which are used in the normal manner to fix the mechanism to the surface which is to be covered by the roller blind.
In Fig. la is seen the upper end of a ball cord 1 comprising balls 2 which are fastened at a distance to a cord which does not need to be endless to work in the invention, and it is seen how VA winding have been created without crossing. In Fig, lb is seen the corresponding pulley with flanges 4 and 6 and the insert which is to be connected to the carrier tube for the roller blind, and it is seen that the pockets 7 are shaped to have a lenght corresponding to two balls 2 placed side by side. There is such a relation between the diameter of the pulley and the distance between the balls on the ball cord that a winding at all times corresponds to having the balls lieing on cylinder generatrices. However, nothing in principle prevents that the pockets may be placed
on parts of helices which provides complete freedom of choice in the relation between ball distance and pulley diameter.
In Fig. 2 is seen the ball cord 1 which is wound around the pulley 3, i.e. the combination of Figs, la and lb. When the ball cord is pulled there happens all the time a shifting of the balls from one side of a pocket to the other, but without problems with jamming which would happen if an ordinary cord were used.
In Fig.3 is seen a roller blind 8 which is partly raised and with a hanging end 9. Furthermore a body 10 is seen which is fitted outside the pulley 3 and which prevents the ball cord 1 from moving past the flanges 4 and 5 of the pulley and getting unwound from the pulley.
Claims (3)
1. A raising and lowering mechanism, in particular for roller blinds which use endless ball cords comprising a pulley (3) with pockets for receiving balls and an endless ball cord (1) and a carrier tube rotatable thereby, characterised in that the ball cord (1) is wound at least VΛ times around the pulley (3) which is designed with increased width and in which the pockets (7) for receiving the balls have an enlarged axial extent.
2. A mechanism according to claim 1, characterised in that a body
(10) is mounted parallel to the axis of the pulley at a distance from the edge (4, 5) of the pulley which is less than the diameter of a ball (2) and with an axial extent corresponding to that of the pulley (3).
3. A mechanism according to claim 1 , characterised in that the ball cord (1) is wound several times (plus ]Λ) around the pulley (3).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK200001534A DK200001534A (en) | 2000-10-13 | 2000-10-13 | A raising and lowering mechanism, especially for roller grilles |
DKPA200001534 | 2000-10-13 | ||
PCT/DK2001/000678 WO2002033210A1 (en) | 2000-10-13 | 2001-10-15 | A raising and lowering mechanism, in particular for roller blinds |
Publications (2)
Publication Number | Publication Date |
---|---|
AU2002210387A1 true AU2002210387A1 (en) | 2002-07-04 |
AU2002210387B2 AU2002210387B2 (en) | 2007-01-04 |
Family
ID=8159790
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU1038702A Pending AU1038702A (en) | 2000-10-13 | 2001-10-15 | A raising and lowering mechanism, in particular for roller blinds |
AU2002210387A Ceased AU2002210387B2 (en) | 2000-10-13 | 2001-10-15 | A raising and lowering mechanism, in particular for roller blinds |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU1038702A Pending AU1038702A (en) | 2000-10-13 | 2001-10-15 | A raising and lowering mechanism, in particular for roller blinds |
Country Status (7)
Country | Link |
---|---|
US (1) | US6971435B2 (en) |
EP (1) | EP1334254B1 (en) |
AT (1) | ATE422599T1 (en) |
AU (2) | AU1038702A (en) |
DE (1) | DE60137639D1 (en) |
DK (1) | DK200001534A (en) |
WO (1) | WO2002033210A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7216688B2 (en) * | 2004-08-30 | 2007-05-15 | Hsien-Te Huang | Reverse-stop mechanism of curtain |
US7730689B2 (en) * | 2007-01-30 | 2010-06-08 | Carmen L. Figueroa-Morales | Window arrangement to aid in the reduction of unwanted air movement in or out of windows |
SE535264C2 (en) * | 2010-01-10 | 2012-06-12 | Wida Media Ab | Curtain with open draw line |
US9091115B2 (en) * | 2010-10-18 | 2015-07-28 | Qmotion Incorporated | Motorizable tilt shade system and method |
US8807192B2 (en) | 2011-05-16 | 2014-08-19 | Maxxmar Inc. | Blind with multiple panels and controls |
US11800923B1 (en) | 2022-07-28 | 2023-10-31 | Tentsile Ltd | Adjustably positionable hanging recliner |
Family Cites Families (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1417298A (en) * | 1920-06-18 | 1922-05-23 | Ellis R Brock | Window-shade roller |
US1591104A (en) * | 1923-08-22 | 1926-07-06 | William A Robinson | Window-shade roller |
US1547035A (en) * | 1923-09-08 | 1925-07-21 | Sr John A Hawthorne | Vehicle |
US2577046A (en) * | 1950-03-17 | 1951-12-04 | Armand Montate | Combination window shade roller bracket and actuating means |
US4139044A (en) * | 1977-07-15 | 1979-02-13 | Ab Perma System | Ball cord lock |
DE3001489C2 (en) * | 1980-01-17 | 1985-10-03 | Hunter Douglas Industries B.V., Rotterdam | Drive for a roller curtain winding rod |
US4424852A (en) * | 1980-09-29 | 1984-01-10 | Hopper Thomas P | Bead-chain drive system for a window shade |
DE8703112U1 (en) * | 1987-02-28 | 1987-04-16 | Aerolux H.-J. Maehl Inh. Karl Metz, 2000 Norderstedt, De | |
US4865109A (en) * | 1987-11-30 | 1989-09-12 | Sherman Roger W | Apparatus for opening and closing a window shade or the like |
US5232038A (en) * | 1989-07-03 | 1993-08-03 | Gary Buxbaum | Drives for wind-up blinds |
IT224916Z2 (en) * | 1990-01-26 | 1996-07-30 | Sunproject Srl | DEVICE TO CONTROL A ROLLER BLIND FROM THE OUTSIDE AND / OR FROM THE INSIDE. |
US5029629A (en) * | 1990-03-02 | 1991-07-09 | Cheng Pei Sheng | Structure of cloth curtain lift controller |
US5137073A (en) * | 1991-02-19 | 1992-08-11 | Teh Yor Industrial Co., Ltd. | Chain pulling device |
JPH06212867A (en) * | 1992-11-30 | 1994-08-02 | Toso Co Ltd | Roll blind with controllable cord |
SE504777C2 (en) | 1994-08-31 | 1997-04-21 | Nyge Haglund Ab | Blind |
AU713936B2 (en) * | 1996-03-08 | 1999-12-16 | Hunter Douglas International N.V. | Light control covering device for architectural openings |
US5875829A (en) * | 1997-08-23 | 1999-03-02 | Chou; Tser-Wen | Bearing structure for vertical blinds and roller shades |
US5975186A (en) * | 1998-03-05 | 1999-11-02 | Day; Perry | Roller blinds mountings |
US6173825B1 (en) * | 1999-08-23 | 2001-01-16 | Tai-Ping Liu | Lift control device for a roller shade |
US6164428A (en) * | 1999-08-23 | 2000-12-26 | Joel Berman Associates, Inc. | Wrap spring shade operator |
US6250359B1 (en) * | 2000-06-06 | 2001-06-26 | Eric W. Lorio | Beaded chain for blinds |
GB0027592D0 (en) * | 2000-11-10 | 2000-12-27 | Powergraphic Displays Ltd | Display unit |
US6505668B1 (en) * | 2001-06-27 | 2003-01-14 | Fu-Mei Fun | Roller curtain with back rolling force |
US20030085003A1 (en) * | 2001-10-23 | 2003-05-08 | Keng Mu Cheng | Rolled-up blind driving mechanism |
US6749000B2 (en) * | 2001-12-17 | 2004-06-15 | Hunter Douglas Industries Bv | Safety device for cord-operated control system |
US20040099384A1 (en) * | 2002-11-22 | 2004-05-27 | Chieh-Yuan Wu | Art wall painting curtain structure |
-
2000
- 2000-10-13 DK DK200001534A patent/DK200001534A/en not_active Application Discontinuation
-
2001
- 2001-10-15 AT AT01978214T patent/ATE422599T1/en not_active IP Right Cessation
- 2001-10-15 WO PCT/DK2001/000678 patent/WO2002033210A1/en active Application Filing
- 2001-10-15 EP EP01978214A patent/EP1334254B1/en not_active Expired - Lifetime
- 2001-10-15 DE DE60137639T patent/DE60137639D1/en not_active Expired - Fee Related
- 2001-10-15 AU AU1038702A patent/AU1038702A/en active Pending
- 2001-10-15 AU AU2002210387A patent/AU2002210387B2/en not_active Ceased
- 2001-10-15 US US10/398,684 patent/US6971435B2/en not_active Expired - Fee Related
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