JPH03125781A - Flexible blind with shell structure - Google Patents

Abstract

PURPOSE: To allow maximum expansion of a shade by alternately oppositely folding a web of sheet material along first and second creased folds and setting a distance from a creased fold of an adhesive applying zone of a folded piece to be specific. CONSTITUTION: A web of sheet material is alternately oppositely folded along a first creased fold F1 and a second creased fold F2 that define an acute angle having restoring ability. Adhesive applying zones B1 , B2 of a folded piece are positioned away from the related creased folds F1 and F2 by a distance D1 of about 2/3 of width W of the folded piece, and a shade is formed. One end of the shade is fixed to a roof member HM, and the other end is fixed to a bottom member BM. One end of a string means L for lifting up and down is mounted to the bottom member BM, and the other end is extended beyond a guide G.

Description

DETAILED DESCRIPTION OF THE INVENTION Various cell structures have been known which are used by attaching them to M4G1 windows. For example, U.S. Reissue Patent No. 30,254, U.S. Patent No. 31,129,
and U.S. Patent Nos. 4,450.027 and 4.60.
No. 3.072 consists of a plurality of separated tubes or a plurality of separated strips forming longitudinally extending cells by folding into a cylinder and glued one on top of the other. A cell structure is disclosed.

U.S. Patent No. 4,288.485, U.S. Patent No. 4.388.3
No. 54 and No. 4.307.768, a plurality of sheets are stacked on top of each other and bonded to each other along spaced, longitudinally extending joints that extend longitudinally between adjacent sheets. A cell structure configured to form a cell is disclosed. Also, U.S. Patent No. 4.
631.217, 4.676.855, 4,677.012 and 4.677.013
No. 5, discloses a cell structure in which a plurality of separate sheets are folded lengthwise and the sheets are glued so that each sheet forms part of two adjacent cells. It has been done. Additionally, U.S. Patent No. 2,201.
356, 4.625.786 and 4.

No. 673,600 and No. 4,685,986 disclose a cell structure in which two folded sheets are arranged on both sides of a blind and joined together at a distance. There is. In U.S. Pat. No. 4,347,887 to Brown, a single sheet of material is bonded to itself at intervals to form a plurality of adjacent cells arranged in two rows. a generally coplanar outer portion in which cells arranged in a matrix collectively form a pair of generally parallel outer members; and a common intermediate spaced apart and generally parallel to the outer members. A cell structure is disclosed having coplanar interior portions that collectively form members.

SUMMARY OF THE INVENTION The general object of the present invention is to provide a cell comprising a single foldable sheet of material which is foldable into a compact state and which forms pleats on both sides when the blind is extended. An object of the present invention is to provide a retractable blind having a structure.

Therefore, the present invention provides for the blind to be folded alternately in opposite directions along resilient first and second folds arranged on one side and the other side, with each folding piece always being A large number of folded pieces are stacked one after another along each of the first and second folds so as to have the same width W defined between the first fold and the second fold. a first narrow joint consisting of foldable sheet material forming a laminate, the opposite surfaces of the folded pieces joining at said first fold being located horizontally a distance jllD from said first fold; opposite surfaces of the folded pieces joined at said second fold are joined at a second narrow joint located a distance horizontally from said second fold;
The ID is larger than 1/2 of the width W and smaller than the width W, and the folding pieces are stacked flat when the blind is completely folded, and the folding pieces and the restorability are The first and second folds having a . Adjacent folded pieces having elasticity and joining at the first fold and joining at the first junction form a first row of cells therebetween;
Adjacent folded pieces joining at said second fold and joining at said second junction form a second row of cells therebetween, and said first row of cells and a second row of cells. The retractable blind is characterized in that the rows overlap in a region between the first joint and the second joint.

In a preferred embodiment of the present invention, the distance is approximately 273 of the width W.

In another embodiment of the invention, the first joint and the second joint are formed substantially from the second fold and the first fold, respectively. and are spaced apart by a distance equal to the spacing between the two joints.

In yet another embodiment of the invention, the folding piece has at least one row of openings extending vertically through the folding piece at an intermediate position between the first joint and the second joint. and a winding and unwinding cord means extends through the row of openings.

DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in the accompanying drawings, a telescoping blind according to the invention, designated by the symbol S, has a resilient acute-angled first fold located on one side of the blind and on the other side. consisting of a foldable material that is alternately folded in opposite directions along each of the first and second folds F2, e.g. It consists of a single sheet of material forming a stack of multiple folded pieces that are in sequential contact along each of the first fold line and the second fold line, and are normally in flat contact with each other. The first fold line Fl and the second fold line F2 are vertically arranged parallel to each other and separated by a preselected distance, so that, as shown in FIGS. 2 and 3, The folded pieces P have the same width W between the first and second folds F1 and F2 involved.

The sheet material can be formed from a variety of different materials that are foldable with sufficient strength to maintain a resilient fold. The sheet material may be formed, for example, from a suitable plastic film, such as a polyester film, or from a woven or nonwoven fabric formed from a variety of fibers, including natural or synthetic fibers.

In a blind according to the invention, one side of the sheet material forms one example of a completed blind, and the other side of the sheet material forms the other side of the completed blind. Both sides of the sheet material may have different physical characteristics, e.g. different shades or textures to inhabit different aesthetics, or light rays formed on one side or the other to enhance light blocking properties. Preferably, it is formed with a reflective or absorbing surface.

The opposing surfaces of the folded pieces that are joined at each of the first folds F1 and are adjacent to each other are separated horizontally by a predetermined distance D1 from the first folds concerned, as shown in FIGS. 2 and 3. The first narrow joint B1 located at
It is joined at. Further, the facing surfaces of the folded pieces that are joined at each of the second folds F2 and are adjacent to each other are:
They are joined at a second narrow joint B2 located a predetermined distance D1 in the horizontal direction from the associated second fold. Here, DI is larger than 1/2 of the width W of the folded piece and smaller than the full width of the folded piece. The distance D1 is predetermined to be approximately 2/3 of the width of the folded piece (7), so that the distance D2 between the joint Bl and the fold F2 and the similar distance between the joint B2 and the fold Fl MD2 is approximately 1 of the width of the folded piece
/3, otherwise the first
The joint B1 and the second joint B2 are at a distance from the second fold F2 and the first fold F1, respectively, substantially equal to the spacing between the first joint B1 and the second joint B2. Only located far away. The first joint B1 and the second joint B2 are formed by using a suitable adhesive and are relatively narrow, e.g., 1/8 inch (3,175 m) or less. It is preferable to form it so that it becomes.

Each folding piece P is normally flat and can be folded into a flat stacked shape as shown in FIG.
When the blind is stretched, adjacent folded pieces joining at the first fold and joining at the first joint B1 form between them a row of first cells C1, and
Adjacent folded pieces joining at a second fold and joining at a second junction B2 form a second row of cells C2 between them. The rows of the first cells C1 and the second cells c2 are vertically overlapped in the region between the first junction and the second junction.

In order to facilitate the attachment of the blind to the window and its subsequent folding, one end of the blind is fixed to the top plate member HM, and the other end of the blind is fixed to the bottom plate member BM. Joint parts B1 and B in folded piece P
2, one or more rows of openings O are formed, and a winding and unwinding string means is attached to one of the members, such as the bottoming member BM, and It passes through one or more rows of openings O above and below and extends beyond the guides G on the headrail.

When forming a blind, the sheet materials are first stacked in alternating folds along first folds F1 and second folds F2. A joint is then formed by joining opposing surfaces of adjacent folded pieces that join at each fold to each other at a distance from the associated fold.

In the manner described above, the retractable blind according to the present invention is formed. The blind has resilient folds F1 and F arranged on both sides of the blind.
2 is made of a single sheet of material formed, when the blind is stretched, it forms finished pleats on both sides of the blind, while when the blind is folded, it is made up of a number of folded pieces. 118 bodies were formed. The folds form a uniform bond between adjacent folded pieces and are effective in supporting the lower portion of the blind when the blind is stretched. Furthermore, note that both sides of the sheet material will be placed on either side of the finished blind; both sides of the sheet material can be preformed to play different aesthetic and/or thermal characteristics on both sides of the finished blind. has been done. By locating the adhesive joints B1 and B2 at a distance of approximately 273 fold widths from the associated fold lines F1 and F2, when the blind is stretched,
0 winding and unwinding cord which allows for maximum stretching of the blind and in which the narrow joints B1 and B2 between adjacent folded pieces form two overlapping rows of cells C1 and C2 having a generally rhombic shape. extend vertically through each folding piece between the adhesive joints Bl and B2 and are not visible from both sides of the blind.

[Brief explanation of the drawing]

1 is a fragmentary perspective view of a retractable blind according to the invention; FIG. 2 is an enlarged side view of the blind shown in FIG. 1 in an extended state; and FIG. FIG. 2 is an enlarged side view of the blind shown in FIG. 1 in a folded state; B1...First junction B2...Second junction CI...First cell C2...Second cell Dl...Distance B2...Distance Fl...First fold F2...Second fold L...Wind-up and unwinding string 0...Opening P...Folding piece S...・・・Blind W・・・・Bridging staff Shinji Kenbu (1 other person)

Claims (5)

[Claims] (1) Folded alternately in opposite directions along resilient first and second folds located on one side and the other side of the blind, each folding piece always being The first and second folds are flat to each other with the same width W defined between the fold line and the second fold line.
and a foldable sheet material stacked sequentially along each of the second folds to form a laminate of a plurality of folded pieces, wherein opposing surfaces of the folded pieces joined at said first fold Distance D horizontally from the crease
the opposing surfaces of the folded pieces joined at the second fold line are joined at a first narrow joint located a distance apart from each other by a distance D; The distance D is 1/1 of the width W.
2 and smaller than the width W, and the folding pieces are in a flat stacked state when the blind is completely folded, and the folding pieces and the first and second resilient pieces are stacked flatly when the blind is completely folded. The fold line is of sufficient strength and elasticity to maintain an acute angle between the folded pieces at the fold line at all times when the blind is stretched to form pleats on one side and the other side thereof; Adjacent folded pieces that join at a first fold and join at said first joint form a first row of cells between them, and join at said second fold and join at said second joint. Adjacent folded pieces joining at said first row form a second row of cells between them;
a selectively retractable blind, characterized in that the row of cells and the second row of cells overlap in the region between the first joint and the second joint. (2) The selectively extendable blind according to claim 1, wherein the distance D is approximately 2/3 of the width W. (3) the first joint part and the second joint part are separated from the second fold line and the first fold line, respectively;
A selectively retractable blind according to claim 1, characterized in that the blinds are spaced apart by a distance substantially equal to the spacing between the first joint and the second joint. . (4) the folding piece has at least one row of openings that vertically penetrate the folding piece at an intermediate position between the first joint and the second joint;
2. A selectively retractable blind according to claim 1, characterized in that winding and unwinding cord means extend through said row of openings. (5) the folding piece has at least one row of openings that vertically penetrate the folding piece at an intermediate position between the first joint and the second joint;
4. A selectively telescoping blind according to claim 3, characterized in that winding and unwinding cord means extend through said row of openings.