EP0373787A1 - Venetian blind tiltroll support - Google Patents
Venetian blind tiltroll support Download PDFInfo
- Publication number
- EP0373787A1 EP0373787A1 EP89312389A EP89312389A EP0373787A1 EP 0373787 A1 EP0373787 A1 EP 0373787A1 EP 89312389 A EP89312389 A EP 89312389A EP 89312389 A EP89312389 A EP 89312389A EP 0373787 A1 EP0373787 A1 EP 0373787A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- headrail
- upstanding
- tilt
- support according
- upstanding member
- 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
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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
- E06B9/307—Details of tilting bars and their operation
Definitions
- the present invention relates to venetian blinds, and in particular to a tilt shaft and tilt roll support mountable in a channel section venetian blind headrail.
- venetian blind headrails It is conventional for venetian blind headrails to be of channel cross-section and to have a web portion, two flanges, the flanges each having a beaded rim at their free edges.
- a number of supports are mounted and serve to carry a common tilt shaft and an equal number of tilt rolls on which the ladders which support the slat are mounted to enable the slats to be tilted, and also they include an opening in the base, a peripheral surface of the opening serving, in use, for guiding a flexible lift element downwardly out of the venetian blind headrail.
- a tilt shaft and tilt roll support mountable in a channel section venetian blind headrail of a given size, said headrail including a web portion and two flanges, said flanges each having a beaded rim at their free edges, said headrail housing at least two tilt rolls, a tilt shaft drivingly engaging said tilt rolls and first and second flexible lift elements extending along and downwardly from said headrail, said support comprising a base shaped to be positioned adjacent the web portion of the venetian blind headrail, at least one upstanding arm having a free end sufficiently close to or engageable against one of said rims, to allow a flexible lift element to be forced past, bearing portions on said base for receiving and supporting a tilt roll and/or tilt shaft, an opening in the base, a peripheral surface of the opening serving, in use, for guiding a first flexible lift element downwardly out of the venetian blind headrail, at least one upstanding member extending upwardly from the base forwardly or rearwardly of the opening to a level
- the upstanding member is used to separate the second and any further lift cords from the first lift cord which passes downwardly through the opening of the first support within the headrail.
- the upstanding member there serves to separate the second lift cord from the third or further lift cords and so on.
- the upper portion of the upstanding arm is positioned closely adjacent the confronting one of the beaded rims one can thread the lift cord therebetween even when the tilt roll support and its tilt roll are mounted in the headrail.
- the at least one upstanding arm is chamfered and may also be resilient to facilitate insertion of the cord between the chamfered upper end and an adjacent rim of the venetian blind headrail.
- the upstanding member may be formed in the base immediately adjacent the opening and the confronting bearing portion may be laterally spaced from its associated upstanding member, the lower surface of the confronting bearing portion being located below the upper surface of the upstanding portion, the lateral spacing then left is sufficient to allow the lift cord to be manipulated into place below the lower surface.
- the upstanding member can have substantially the same height as the upstanding arm.
- the confronting bearing portions are each spaced laterally inwardly of said upstanding members.
- Said at least one upstanding member may have a distal end close to or engageable against the tilt shaft and/or tilt roll when in use.
- the support In order to retain the support in place, it preferably comprises engaging means which engage under the other of the beaded rims of a headrail.
- the engaging means may comprise further resilient arms extending upwardly at longitudinally spaced locations from the base portion, and another portion protruding through an opening in the headrail web portion.
- a headrail 10 including a web 12 and two side flanges 14, each having an inturned beaded rim 16 at their upper free edges.
- the headrail web 12 has an opening 18 and at this location is positioned a support 20 according to the invention.
- This support includes a base 22 which has a portion protruding through the opening 18, the base including two laterally spaced apart bearing portions 24 having open-topped cylindrical recesses for accommodating a tilt roll (not shown) for rotation about an axis 26 ( Figure 1).
- Forming part of each portion 24 is an integral upstanding arm 28 which extends up to be closely adjacent to the front one of said inturned beaded rims 16.
- the top surface of the upstanding arm 28 is chamfered at 30.
- upstanding members 32 Mounted within or forming part of the base 22 are two laterally spaced apart upstanding members 32 which extend forwardly (or rearwardly if desired), to a level above the height of a peripheral surface 34 serving to define a guide for a flexible lift element, such as a lift cord 36, which passes laterally of the support, that is longitudinally of the headrail, and then downwardly through the base and thus through the opening 18.
- the peripheral surface 24 and the upstanding members 32 conveniently form part of a separate insert mounted within the base 22. It will be seen that the upper surface of the upstanding members 32 has spaced therefrom a confronting lower portion 38 of the bearing part 24.
- the uppermost tip of the upstanding member 32 extends above the lower surface of the confronting portion 38 and is laterally spaced therefrom, as can be seen from Figure 1. The spacing is sufficient to allow the cord 36 to be threaded under the portion 38 and over the top of the upstanding member 32.
- a further lift cord 37 is shown passing to the right and extending to a subsequent support (not shown) similar to the support 20.
- the upstanding member 32 and the confronting portion 38 prevent this cord 37 from becoming entangled with the cord 36.
- the upstanding arm and confronting rim 16, 28 will prevent the further cord 37 from accidentally escaping from the headrail. This is particularly helpful while handling the headrail during assembly.
- bearing portions 24 are provided with upstanding holding members 25 which engage under the rear beaded rim 16 to hold the support 20 in place.
- a support 120 is provided with a base 122 which has integrally formed therewith two bearing parts 124 for mounting for rotation a tilt roll 121 which can be driven by a tilt shaft 123. Rearwardly and upwardly extending elements 125 engage under the rear beaded rim 116.
- a central portion 129 of the base 122 extends for a distance between the front and rear flanges 114. Formed in this central portion is a guide surface 134 leading down to an opening (which cannot readily be seen in the drawings) leading into an opening in the web portion 112 of the channel section headrail.
- An upstanding arm 128 is formed integrally with the bearing parts 124 and has a curved or chamfered upper surface 130 which is closely spaced from the front rim 116.
- the upstanding members 132 Projecting upwardly from the base 122 are again two laterally spaced upstanding members 132, whereby in this embodiment the confronting bearing parts 124 are spaced inwardly of the upstanding members 132.
- the upstanding members 132 each have a preferably resilient distal end projecting well above a confronting surface 138 on the adjacent bearing part 124 and ending close to or against the tilt shaft 123, so as provide a restricted passage for a lift cord.
- FIG. 4 The method of assembly is shown in Figure 4 in which a portion 136 A of a lift cord 136 is shown being fed around the chamfered surface 130 of the upstanding arm 128. It will be seen that the cord is being fed behind the upstanding member 132, the upper surface of which is above the confronting surface 138 of the bearing portion 124. The part 136A of the cord 136 is then fed round chamfered surface 130, between upstanding member 132 and tilt shaft 123 and underneath confronting surface 138 to take up the position illustrated in Figure 4. Each subsequent cord 137 can then pass freely to the right, as viewed in Figure 4, of the upstanding member 132 so that there will be no fear of it becoming entangled with the first lift cord 136. As is apparent from Figures 4 and 5 the above cord threading operations can be performed with the tilt shaft and tilt rolls in mounted position.
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- Structural Engineering (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Blinds (AREA)
- Supports For Plants (AREA)
- Massaging Devices (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
- Sliding-Contact Bearings (AREA)
- Saccharide Compounds (AREA)
- Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
- Friction Gearing (AREA)
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- Temperature-Responsive Valves (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
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- Rollers For Roller Conveyors For Transfer (AREA)
- Paper (AREA)
Abstract
Description
- The present invention relates to venetian blinds, and in particular to a tilt shaft and tilt roll support mountable in a channel section venetian blind headrail.
- It is conventional for venetian blind headrails to be of channel cross-section and to have a web portion, two flanges, the flanges each having a beaded rim at their free edges. In one form of blind a number of supports are mounted and serve to carry a common tilt shaft and an equal number of tilt rolls on which the ladders which support the slat are mounted to enable the slats to be tilted, and also they include an opening in the base, a peripheral surface of the opening serving, in use, for guiding a flexible lift element downwardly out of the venetian blind headrail. There are always at least two such supports in a headrail and sometimes many more if the venetian blind is very wide. A problem arises in arranging for the lift elements, usually lift cords, not to become entangled within the headrail or escaping therefrom during the assembly stages and it is usually very difficult to thread these lift cords into place, particularly if the tilt rolls themselves are positioned in their supports.
- It is now proposed, according to the present invention, to provide a tilt shaft and tilt roll support mountable in a channel section venetian blind headrail of a given size, said headrail including a web portion and two flanges, said flanges each having a beaded rim at their free edges, said headrail housing at least two tilt rolls, a tilt shaft drivingly engaging said tilt rolls and first and second flexible lift elements extending along and downwardly from said headrail, said support comprising a base shaped to be positioned adjacent the web portion of the venetian blind headrail, at least one upstanding arm having a free end sufficiently close to or engageable against one of said rims, to allow a flexible lift element to be forced past, bearing portions on said base for receiving and supporting a tilt roll and/or tilt shaft, an opening in the base, a peripheral surface of the opening serving, in use, for guiding a first flexible lift element downwardly out of the venetian blind headrail, at least one upstanding member extending upwardly from the base forwardly or rearwardly of the opening to a level above the height of the peripheral surface of the opening, whereby said upstanding member acts as a guide to separate at least a second flexible lift element from said first flexible lift element, an upper portion of said upstanding member, positioned closely adjacent a confronting one of said bearing portions having a lower surface spaced from said upstanding member by an amount sufficient to allow said first flexible lift element to be manipulated into place below said lower surface.
- With such a structure of support, the upstanding member is used to separate the second and any further lift cords from the first lift cord which passes downwardly through the opening of the first support within the headrail. At the next support, the upstanding member there serves to separate the second lift cord from the third or further lift cords and so on.
- Because the upper portion of the upstanding arm is positioned closely adjacent the confronting one of the beaded rims one can thread the lift cord therebetween even when the tilt roll support and its tilt roll are mounted in the headrail.
- Advantageously, the at least one upstanding arm is chamfered and may also be resilient to facilitate insertion of the cord between the chamfered upper end and an adjacent rim of the venetian blind headrail.
- The upstanding member may be formed in the base immediately adjacent the opening and the confronting bearing portion may be laterally spaced from its associated upstanding member, the lower surface of the confronting bearing portion being located below the upper surface of the upstanding portion, the lateral spacing then left is sufficient to allow the lift cord to be manipulated into place below the lower surface.
- In one particular construction, there are two upstanding members and two laterally spaced confronting bearing portions each spaced laterally outwardly of the nearer of the upstanding members.
- In an alternative construction, the upstanding member can have substantially the same height as the upstanding arm.
- Advantageously, the confronting bearing portions are each spaced laterally inwardly of said upstanding members.
- Said at least one upstanding member may have a distal end close to or engageable against the tilt shaft and/or tilt roll when in use.
- These measures in particular allow the threading of lift cords with the tilt shaft and tilt rolls already in position.
- In order to retain the support in place, it preferably comprises engaging means which engage under the other of the beaded rims of a headrail. In such a construction, the engaging means may comprise further resilient arms extending upwardly at longitudinally spaced locations from the base portion, and another portion protruding through an opening in the headrail web portion.
- In order that the invention may more readily be understood, the following description is given, merely by way of example, reference being made to the accompanying drawings, in which:-
- Figure 1 is a longitudinal cross-section through the headrail of a venetian blind, incorporating one embodiment of tilt roll support according to the invention;
- Figure 2 is an end view of the headrail and support of Figure 1;
- Figure 3 is an enlarged perspective view of a second and preferred embodiment of the support according to the invention;
- Figure 4 is a perspective view from the other side illustrating the support of Figure 1, mounted in a headrail with the lift cord being inserted; and
- Figure 5 is a similar view with the lift cord actually inserted.
- Referring first to Figure 1, there is illustrated therein a
headrail 10 including aweb 12 and twoside flanges 14, each having an inturned beadedrim 16 at their upper free edges. Theheadrail web 12 has anopening 18 and at this location is positioned asupport 20 according to the invention. This support includes abase 22 which has a portion protruding through theopening 18, the base including two laterally spaced apart bearingportions 24 having open-topped cylindrical recesses for accommodating a tilt roll (not shown) for rotation about an axis 26 (Figure 1). Forming part of eachportion 24 is an integralupstanding arm 28 which extends up to be closely adjacent to the front one of said inturnedbeaded rims 16. The top surface of theupstanding arm 28 is chamfered at 30. - Mounted within or forming part of the
base 22 are two laterally spaced apartupstanding members 32 which extend forwardly (or rearwardly if desired), to a level above the height of aperipheral surface 34 serving to define a guide for a flexible lift element, such as alift cord 36, which passes laterally of the support, that is longitudinally of the headrail, and then downwardly through the base and thus through theopening 18. Theperipheral surface 24 and theupstanding members 32 conveniently form part of a separate insert mounted within thebase 22. It will be seen that the upper surface of theupstanding members 32 has spaced therefrom a confrontinglower portion 38 of thebearing part 24. The uppermost tip of theupstanding member 32 extends above the lower surface of the confrontingportion 38 and is laterally spaced therefrom, as can be seen from Figure 1. The spacing is sufficient to allow thecord 36 to be threaded under theportion 38 and over the top of theupstanding member 32. - As can be seen in Figure 2 in particular, a
further lift cord 37 is shown passing to the right and extending to a subsequent support (not shown) similar to thesupport 20. Theupstanding member 32 and the confrontingportion 38 prevent thiscord 37 from becoming entangled with thecord 36. The upstanding arm and confrontingrim further cord 37 from accidentally escaping from the headrail. This is particularly helpful while handling the headrail during assembly. - At the rear the bearing
portions 24 are provided withupstanding holding members 25 which engage under the rear beadedrim 16 to hold thesupport 20 in place. - If reference is now made to Figure 3, a second embodiment is shown and like parts have been indicated by like reference numerals, with the addition of 100.
- A
support 120 is provided with abase 122 which has integrally formed therewith two bearingparts 124 for mounting for rotation atilt roll 121 which can be driven by atilt shaft 123. Rearwardly and upwardly extendingelements 125 engage under the rear beadedrim 116. Acentral portion 129 of thebase 122 extends for a distance between the front andrear flanges 114. Formed in this central portion is aguide surface 134 leading down to an opening (which cannot readily be seen in the drawings) leading into an opening in theweb portion 112 of the channel section headrail. Anupstanding arm 128 is formed integrally with the bearingparts 124 and has a curved or chamferedupper surface 130 which is closely spaced from thefront rim 116. - Projecting upwardly from the
base 122 are again two laterally spacedupstanding members 132, whereby in this embodiment the confronting bearingparts 124 are spaced inwardly of theupstanding members 132. Theupstanding members 132 each have a preferably resilient distal end projecting well above a confrontingsurface 138 on the adjacent bearingpart 124 and ending close to or against thetilt shaft 123, so as provide a restricted passage for a lift cord. - The method of assembly is shown in Figure 4 in which a
portion 136 A of alift cord 136 is shown being fed around thechamfered surface 130 of theupstanding arm 128. It will be seen that the cord is being fed behind theupstanding member 132, the upper surface of which is above the confrontingsurface 138 of thebearing portion 124. Thepart 136A of thecord 136 is then fed round chamferedsurface 130, betweenupstanding member 132 andtilt shaft 123 and underneath confrontingsurface 138 to take up the position illustrated in Figure 4. Eachsubsequent cord 137 can then pass freely to the right, as viewed in Figure 4, of theupstanding member 132 so that there will be no fear of it becoming entangled with thefirst lift cord 136. As is apparent from Figures 4 and 5 the above cord threading operations can be performed with the tilt shaft and tilt rolls in mounted position.
Claims (12)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT89312389T ATE77127T1 (en) | 1988-12-15 | 1989-11-29 | BEARING BLOCK FOR THE TURNING SHAFT OF A BLIND BLINDS. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8829242A GB2226068B (en) | 1988-12-15 | 1988-12-15 | Venetian blinds. |
GB8829242 | 1988-12-15 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0373787A1 true EP0373787A1 (en) | 1990-06-20 |
EP0373787B1 EP0373787B1 (en) | 1992-06-10 |
Family
ID=10648521
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89312389A Expired - Lifetime EP0373787B1 (en) | 1988-12-15 | 1989-11-29 | Venetian blind tiltroll support |
Country Status (13)
Country | Link |
---|---|
EP (1) | EP0373787B1 (en) |
JP (1) | JP2894755B2 (en) |
AT (1) | ATE77127T1 (en) |
BR (1) | BR8906458A (en) |
DE (1) | DE68901766T2 (en) |
DK (1) | DK167581B1 (en) |
ES (1) | ES2032657T3 (en) |
GB (1) | GB2226068B (en) |
IN (1) | IN176704B (en) |
MY (1) | MY104706A (en) |
NZ (1) | NZ231749A (en) |
PT (1) | PT92581B (en) |
SG (1) | SG15793G (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CZ302112B6 (en) * | 2005-06-15 | 2010-10-20 | Isotra A.S. | Bearing attachment of roller shutter control elements in upper load-bearing section |
US20170130525A1 (en) * | 2015-11-09 | 2017-05-11 | Li-Ming Cheng | Fixing Assembly for Shading Body |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL6407120A (en) * | 1964-06-23 | 1965-12-24 | ||
GB2120716A (en) * | 1982-05-21 | 1983-12-07 | Levolor Lorentzen Inc | Venetian blind |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6012871Y2 (en) * | 1979-10-31 | 1985-04-24 | 株式会社ニチベイ | Blind blade tilting drum and lifting cord support device |
JPS58162993U (en) * | 1982-04-26 | 1983-10-29 | 立川ブラインド工業株式会社 | Internal structure of headbox in blinds |
JPH044155Y2 (en) * | 1985-03-04 | 1992-02-06 |
-
1988
- 1988-12-15 GB GB8829242A patent/GB2226068B/en not_active Expired - Lifetime
-
1989
- 1989-11-29 EP EP89312389A patent/EP0373787B1/en not_active Expired - Lifetime
- 1989-11-29 DE DE8989312389T patent/DE68901766T2/en not_active Expired - Fee Related
- 1989-11-29 ES ES198989312389T patent/ES2032657T3/en not_active Expired - Lifetime
- 1989-11-29 AT AT89312389T patent/ATE77127T1/en not_active IP Right Cessation
- 1989-12-08 IN IN1161DE1989 patent/IN176704B/en unknown
- 1989-12-13 JP JP1323691A patent/JP2894755B2/en not_active Expired - Lifetime
- 1989-12-13 NZ NZ231749A patent/NZ231749A/en unknown
- 1989-12-14 BR BR898906458A patent/BR8906458A/en not_active Application Discontinuation
- 1989-12-14 PT PT92581A patent/PT92581B/en not_active IP Right Cessation
- 1989-12-14 MY MYPI89001763A patent/MY104706A/en unknown
- 1989-12-14 DK DK632889A patent/DK167581B1/en active
-
1993
- 1993-02-11 SG SG157/93A patent/SG15793G/en unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL6407120A (en) * | 1964-06-23 | 1965-12-24 | ||
GB2120716A (en) * | 1982-05-21 | 1983-12-07 | Levolor Lorentzen Inc | Venetian blind |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CZ302112B6 (en) * | 2005-06-15 | 2010-10-20 | Isotra A.S. | Bearing attachment of roller shutter control elements in upper load-bearing section |
US20170130525A1 (en) * | 2015-11-09 | 2017-05-11 | Li-Ming Cheng | Fixing Assembly for Shading Body |
US9896881B2 (en) * | 2015-11-09 | 2018-02-20 | Li-Ming Cheng | Fixing assembly for a shading body |
Also Published As
Publication number | Publication date |
---|---|
DK167581B1 (en) | 1993-11-22 |
GB2226068A (en) | 1990-06-20 |
AU616084B2 (en) | 1991-10-17 |
SG15793G (en) | 1993-04-16 |
EP0373787B1 (en) | 1992-06-10 |
JP2894755B2 (en) | 1999-05-24 |
PT92581B (en) | 1995-09-12 |
DK632889D0 (en) | 1989-12-14 |
ES2032657T3 (en) | 1993-02-16 |
ATE77127T1 (en) | 1992-06-15 |
DE68901766T2 (en) | 1993-02-04 |
DE68901766D1 (en) | 1992-07-16 |
PT92581A (en) | 1990-06-29 |
BR8906458A (en) | 1990-08-28 |
NZ231749A (en) | 1992-02-25 |
MY104706A (en) | 1994-05-31 |
DK632889A (en) | 1990-06-16 |
JPH02289784A (en) | 1990-11-29 |
GB2226068B (en) | 1992-08-05 |
GB8829242D0 (en) | 1989-01-25 |
IN176704B (en) | 1996-08-24 |
AU4606089A (en) | 1990-06-21 |
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