EP0414417A1 - Venetian blinds and method of manufacture - Google Patents
Venetian blinds and method of manufacture Download PDFInfo
- Publication number
- EP0414417A1 EP0414417A1 EP90308742A EP90308742A EP0414417A1 EP 0414417 A1 EP0414417 A1 EP 0414417A1 EP 90308742 A EP90308742 A EP 90308742A EP 90308742 A EP90308742 A EP 90308742A EP 0414417 A1 EP0414417 A1 EP 0414417A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tilt
- roll
- flexible elements
- blind
- tilt roll
- 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
Images
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
-
- 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.
- a venetian blind comprises a headrail, at least two ladder means, each having a pair of spaced, longitudinally extending, flexible elements and spaced rungs interconnecting said elements, slats supported by said rungs, a tilt roll associated with said ladder means, connecting means on said tilt roll for connecting the tilt roll to each of the flexible elements of the associated ladder means and means to rotate the tilt rolls, to effect tilting of the slats to any position from and between one fully closed position, via a fully open position, to a second fully closed position.
- each ladder means to each extend around at least half of the periphery of the associated tilt roll, in the fully open position of the blind, to reach said connecting means, the two flexible elements of one ladder means being then wound round that tilt roll in an opposite winding sense to extend downwardly from opposite laterally outermost points of the tilt roll, whereby the tilt rolls may be rotated by more than 360° to tilt the blind from the fully open position to either one of the fully closed positions.
- Such a structure may readily be used for a blind for which the slats are a significantly greater width than the diameter of the tilt rolls.
- the tilt roll can be tilted by less than 360° to effect the full tilting motion from the fully open position to either one of the fully closed positions.
- a method of assembling two different venetian blinds which are of first and second slat widths respectively, the second slat width being greater than the first
- the venetian blind including at least two ladder means, each having a pair of spaced, longitudinally extending, flexible elements and spaced rungs interconnecting said flexible elements for supporting the venetian blind slats, said pairs of flexible elements each being mounted on a tilt roll and the flexible elements of each pair extending downwardly from opposite lateral outermost points of its tilt roll
- said method comprising utilizing identical tilt rolls for the ladder means of the blinds of the first and second widths, attaching the pair of flexible elements of each ladder means, for the blind with the slats of the first width, to the respective tilt rolls so that they extend directly from the securing means of the tilt roll to the laterally outermost point of that roll and attaching the pair of flexible elements of each ladder means, for the blind with the slats of the second width, to the respective tilt roll
- Headrails of venetian blinds conventionally comprise a channel section member.
- This channel section member is mounted either with its web uppermost or its web lowermost.
- a single elongate slot should be provided to allow the flexible elements to traverse the slot as the tilt roll is rotated because, with the construction and method of the invention, the flexible elements extend from the laterally outermost points of the periphery of that tilt roll at substantially the same location as each other when the blind is in either one of the fully closed positions.
- FIG. 1A there is illustrated a tilt roll 10 having on one portion of its periphery connecting means 12.
- Longitudinal flexible elements 14, 16 of a ladder means are shown, the element 14 being shown cross-hatched lines and the element 16 in plain double lines.
- the flexible elements 14, 16 are connected by rungs 15 ( Figures 2A and 2B).
- the connecting means 12 are shown at the top in Figure 1A and the element 14, 16 are wrapped around one quarter, approximately, of the circumference of the roll to the outermost points 18, 20 of the periphery of the roll.
- one of the flexible elements has been fully unwound from its tilt roll and by further rotation it has been allowed to traverse to the laterally opposite outermost point of the periphery of the tilt roll to extend downwardly therefrom in close proximity to the other flexible element of the same ladder means, the spacing being indicated by arrow 22.
- the two connecting elements are directly beside each other in the extreme tilt position as indicated by arrow 22, giving the fully closed position on either side.
- the cords In order to be able to go from one side to the other, therefore, it is advantageous for the cords to be able to move freely across from one side to the other of the headrail in which the tilt roll is mounted.
- a headrail 30 is illustrated this having a web 32 and side flanges 34, 36.
- an elongate slot will be provided in the web 32.
- the headrail could be mounted the other way up, so that it is open at the bottom permitting this traverse of the cords to ensure accurate tilting of the uppermost slat or slats.
- the same headrail and tilt roll can be used in both Figure 2A and Figure 2B and although the slats 24 are significantly wider in Figure 2B than the they are in Figure 2A.
- a tilter mechanism 38 of a conventional nature is used to tilt, that is change the angle of the tilt roll 10.
- the shaft like element 42 is provided with a key structure 44 radially protruding from its periphery.
- the key structure 44 extends in the axial direction of the shaft like element 40 and has progressively slanted sides towards an enlarged middle portion 46.
- the shaft like element 42 can be economically produced as a moulding, whereas the connecting means 12 can be formed integrally with the sheet metal sleeve 40.
- the sleeve 40 being provided with a longitudinal slit conforming to the shape of the key structure 44 and having rounded edges 48 can be snap-fitted onto the shaft like element 42 and will be held in position by the enlarged portion 46.
Landscapes
- Structural Engineering (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Blinds (AREA)
- Stringed Musical Instruments (AREA)
- Closed-Circuit Television Systems (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
- Bedding Items (AREA)
- Polyesters Or Polycarbonates (AREA)
- Press Drives And Press Lines (AREA)
Abstract
Description
- The present invention relates to venetian blinds.
- Conventionally a venetian blind comprises a headrail, at least two ladder means, each having a pair of spaced, longitudinally extending, flexible elements and spaced rungs interconnecting said elements, slats supported by said rungs, a tilt roll associated with said ladder means, connecting means on said tilt roll for connecting the tilt roll to each of the flexible elements of the associated ladder means and means to rotate the tilt rolls, to effect tilting of the slats to any position from and between one fully closed position, via a fully open position, to a second fully closed position.
- It has been proposed, over the years, to provide venetian blinds having slats of different widths. For horizontal inside blinds it is conventional to have slats of 50 mm width, 25 mm width, 16 mm width and even smaller. It has been conventional to provide a headrail usually of substantially the same width as the slat material, for blinds of each slat width. These headrails have, as indicated above, usually mounted therein two or more tilt rolls usually associated with a tilt rod and the diameters of these tilt rolls have been different for each different width blind.
- To manufacture blinds of several different widths, for different requirements, therefore requires a large inventory of components which can be expensive.
- It is now proposed, according to one aspect of the invention, for the flexible elements of each ladder means to each extend around at least half of the periphery of the associated tilt roll, in the fully open position of the blind, to reach said connecting means, the two flexible elements of one ladder means being then wound round that tilt roll in an opposite winding sense to extend downwardly from opposite laterally outermost points of the tilt roll, whereby the tilt rolls may be rotated by more than 360° to tilt the blind from the fully open position to either one of the fully closed positions.
- Such a structure may readily be used for a blind for which the slats are a significantly greater width than the diameter of the tilt rolls. One can, however, use the same headrail and the same tilt roll for a blind having slats of a lesser width but in these latter blinds, the flexible elements will extend directly from the connecting means, on either side of the connecting means, to the opposite laterally outermost points of the tilt roll and then downwardly. With such a structure the tilt roll can be tilted by less than 360° to effect the full tilting motion from the fully open position to either one of the fully closed positions.
- In this way it is possible to use the same headrail and the same tilt rolls for blinds of two different widths.
- Thus, according to another aspect of the present invention, there is provided a method of assembling two different venetian blinds which are of first and second slat widths respectively, the second slat width being greater than the first, the venetian blind including at least two ladder means, each having a pair of spaced, longitudinally extending, flexible elements and spaced rungs interconnecting said flexible elements for supporting the venetian blind slats, said pairs of flexible elements each being mounted on a tilt roll and the flexible elements of each pair extending downwardly from opposite lateral outermost points of its tilt roll, said method comprising utilizing identical tilt rolls for the ladder means of the blinds of the first and second widths, attaching the pair of flexible elements of each ladder means, for the blind with the slats of the first width, to the respective tilt rolls so that they extend directly from the securing means of the tilt roll to the laterally outermost point of that roll and attaching the pair of flexible elements of each ladder means, for the blind with the slats of the second width, to the respective tilt roll, so that each of the flexible elements of each pair extends from the securing means of the tilt roll around at least half of the periphery of that tilt roll, to reach the laterally outermost point of that roll, when the blinds is in its fully opened position.
- Headrails of venetian blinds conventionally comprise a channel section member. This channel section member is mounted either with its web uppermost or its web lowermost. With the construction of the invention, if the web is lowermost, then instead of having two apertures, one for each of a pair of spaced longitudinally flexible elements, it is proposed according to the invention that a single elongate slot should be provided to allow the flexible elements to traverse the slot as the tilt roll is rotated because, with the construction and method of the invention, the flexible elements extend from the laterally outermost points of the periphery of that tilt roll at substantially the same location as each other when the blind is in either one of the fully closed positions. The provision of an elongate slot ensures that the top most slat is correctly tilted whereas if one were to have single apertures, one for each flexible element, then there would be a tendency for the top most slat or several slats to be tilted at a different angle from that of the remainder of the blind which does not give a very pleasing aesthetic effect.
- In order that the present invention may be more readily be understood, the following description is given, merely by way of example, reference being made to the accompanying drawings, in which:-
- Figure 1A, 1B and 1C are schematic views illustrating the tilt roll of a venetian blind of the invention for a slat of the first width, and for a slat of the second width, and also the angles of the slats in different rotational positions of the tilt roll;
- Figure 2A and 2B illustrate in side elevation schematically two blinds of the invention, one of the first width and one of the second width respectively; and
- Figures 3 and 4 illustrate a side elevation and an underneath plan respectively of one embodiment of tilt roll of the invention.
- If reference is first made to the Figure 1, in Figure 1A, there is illustrated a
tilt roll 10 having on one portion of its periphery connecting means 12. Longitudinalflexible elements element 14 being shown cross-hatched lines and theelement 16 in plain double lines. Theflexible elements means 12 are shown at the top in Figure 1A and theelement outermost points roll 10 is rotated by 180° in either direction, then the slats 24 (Figure 1C) will be tilted to approximately their half closed position and if the tilt roll is rotated a further 90°, to the 270° position, then the slats will be tilted to a closed substantially vertical position as indicated at the left and right of Figure 1C. - In either one of the fully closed positions one of the flexible elements has been fully unwound from its tilt roll and by further rotation it has been allowed to traverse to the laterally opposite outermost point of the periphery of the tilt roll to extend downwardly therefrom in close proximity to the other flexible element of the same ladder means, the spacing being indicated by
arrow 22. - If reference is now made to Figure 1B, it will be seen that identical parts have been used and these are referred to in this figure with identical reference numerals. It will be seen that the
cord 14 is wrapped around theroll 10 from thepoint 18 in a clockwise direction to the connectingmeans 12 which is in this instance at the lowermost position. Similarly theflexible element 16 is wrapped around, from thelocation 20 in counter-clockwise direction again to arrive at theconnecting means 12 at the lowermost position. In each instance, therefore, in the open or 0° position for the blind, theflexible elements tilt roll 10. It will be noted that in order to arrive at the position equivalent to the 180° position of Figure 1A, thetape roll 10 as illustrated in Figure 1B will have to be rotated approximately 270° and to arrive the position equivalent to the 270° position of Figure 1A, thetilt roll 10 will have to be rotated to 450°. In fact in both of the positions illustrated on the left in Figure 1A and Figure 1B, theflexible element 14 extends directly downwardly from theconnecting means 12. This is possible with the arrangement of Figure 1B, because theflexible element 14 had been wrapped around the tape roll about three-quarters of a turn (270°). Similar considerations apply to the other extreme position enabling theflexible element 16 to hang directly downwardly from theconnecting means 12 on the right-hand side of the drawing. - In each instance, therefore, the two connecting elements are directly beside each other in the extreme tilt position as indicated by
arrow 22, giving the fully closed position on either side. In order to be able to go from one side to the other, therefore, it is advantageous for the cords to be able to move freely across from one side to the other of the headrail in which the tilt roll is mounted. - In Figure 2A and Figure 2B, a
headrail 30 is illustrated this having aweb 32 andside flanges flexible elements web 32. Alternatively, the headrail could be mounted the other way up, so that it is open at the bottom permitting this traverse of the cords to ensure accurate tilting of the uppermost slat or slats. It will be seen that the same headrail and tilt roll can be used in both Figure 2A and Figure 2B and although theslats 24 are significantly wider in Figure 2B than the they are in Figure 2A. Atilter mechanism 38 of a conventional nature is used to tilt, that is change the angle of thetilt roll 10. - In Figures 3 and 4 the
tilt roll 10 is shown in somewhat more detail. In particular in Figure 3 it is shown how the connecting means 12 extend from asleeve 40 which surrounds a shaft likeelement 42. - In Figure 4 it can be seen that the shaft like
element 42 is provided with akey structure 44 radially protruding from its periphery. Thekey structure 44 extends in the axial direction of the shaft likeelement 40 and has progressively slanted sides towards an enlarged middle portion 46. - In this manner the shaft like
element 42 can be economically produced as a moulding, whereas the connectingmeans 12 can be formed integrally with thesheet metal sleeve 40. Thesleeve 40 being provided with a longitudinal slit conforming to the shape of thekey structure 44 and havingrounded edges 48 can be snap-fitted onto the shaft likeelement 42 and will be held in position by the enlarged portion 46.
Claims (5)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8919331A GB2235488A (en) | 1989-08-25 | 1989-08-25 | Venetian blinds and methods of manufacture. |
GB8919331 | 1989-08-25 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0414417A1 true EP0414417A1 (en) | 1991-02-27 |
EP0414417B1 EP0414417B1 (en) | 1992-11-25 |
Family
ID=10662102
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90308742A Expired EP0414417B1 (en) | 1989-08-25 | 1990-08-08 | Venetian blinds and method of manufacture |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0414417B1 (en) |
JP (1) | JP2528543B2 (en) |
AT (1) | ATE82794T1 (en) |
DE (1) | DE69000498T2 (en) |
DK (1) | DK0414417T3 (en) |
ES (1) | ES2036089T3 (en) |
GB (1) | GB2235488A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT202200003161A1 (en) | 2022-02-21 | 2023-08-21 | Horizon S R L | ROTARY HANDLING SYSTEM FOR MOBILE AWNINGS |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1277291A (en) * | 1961-01-06 | 1961-11-24 | Eskilstuna Ind Ab | Orientation box for slatted blinds |
DE1509809A1 (en) * | 1964-12-19 | 1969-02-27 | Giuseppe Russo | Control device for blinds, Venetian awnings or the like. |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB719979A (en) * | 1951-09-24 | 1954-12-08 | Fabers Fab As C | Improvements in or relating to devices for adjusting the angular position of venetian blind slats |
NL109186C (en) * | 1958-09-09 | |||
GB901414A (en) * | 1960-12-28 | 1962-07-18 | Eskilstuna Ind Ab | Mounting device for venetian blinds |
GB1046270A (en) * | 1963-09-27 | 1966-10-19 | Ole Velle | Improvements in venetian blind assemblies |
GB1081976A (en) * | 1963-12-17 | 1967-09-06 | Hunter Douglas International | Venetian blind |
US3605852A (en) * | 1969-03-06 | 1971-09-20 | Alcan Aluminum Corp | Venetian blind having rotatable head assembly |
EP0098333A1 (en) * | 1982-07-09 | 1984-01-18 | Olofsson, Roland | A ladder tape roll for venetian blinds |
-
1989
- 1989-08-25 GB GB8919331A patent/GB2235488A/en active Pending
-
1990
- 1990-08-08 ES ES199090308742T patent/ES2036089T3/en not_active Expired - Lifetime
- 1990-08-08 DE DE9090308742T patent/DE69000498T2/en not_active Expired - Fee Related
- 1990-08-08 EP EP90308742A patent/EP0414417B1/en not_active Expired
- 1990-08-08 DK DK90308742.7T patent/DK0414417T3/en active
- 1990-08-08 AT AT90308742T patent/ATE82794T1/en not_active IP Right Cessation
- 1990-08-24 JP JP2224156A patent/JP2528543B2/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1277291A (en) * | 1961-01-06 | 1961-11-24 | Eskilstuna Ind Ab | Orientation box for slatted blinds |
DE1509809A1 (en) * | 1964-12-19 | 1969-02-27 | Giuseppe Russo | Control device for blinds, Venetian awnings or the like. |
Also Published As
Publication number | Publication date |
---|---|
DK0414417T3 (en) | 1993-01-04 |
DE69000498D1 (en) | 1993-01-07 |
DE69000498T2 (en) | 1993-04-01 |
JPH0393986A (en) | 1991-04-18 |
GB8919331D0 (en) | 1989-10-11 |
EP0414417B1 (en) | 1992-11-25 |
ES2036089T3 (en) | 1993-05-01 |
ATE82794T1 (en) | 1992-12-15 |
JP2528543B2 (en) | 1996-08-28 |
GB2235488A (en) | 1991-03-06 |
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