JPH07976B2 - Pleated shade - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION {Industrial application field} The present invention provides a general straight type pleat shade including a skylight for which a support member is provided on both sides to improve aesthetics, or a support member is provided at a central portion. A curved pleated shade including a curved ceiling window that is structurally difficult to provide.

{Prior Art} Conventional pleated shades have a penetrating wire material that has a set pitch of approximately 500 mm or less at multiple locations, including the central part of the main body, as the shade width W increases. As a supporting member, a straight type for general vertical type windows has been mainly used.

In addition, when diverted to a straight type for tilting and skylights, a large number of supporting members such as penetrating wire rods exposed at the central portion are used.

{Problems to be Solved by the Invention} However, in the conventional plind having the above-described configuration, the supporting member exposed in the central portion impairs the aesthetics of the shade, and particularly exhibits a curvature as seen in the sunroom ceiling or the like. I couldn't handle the windows.

This is because the rigidity of the penetrating wire becomes the main body supporting force, and when the wire is a rope such as a fiber, the wire must be tensioned to ensure the rigidity.

In this case, the tension applying mechanism is required, and the tension causes a downward component force (a restraining force to make the curve straight) to the shade main body located in the bending portion, so that the shade is shaded. Because of the crushing, it is difficult to implement the intermediate support material.

Further, the wire is a metal or the like having a relatively large rigidity, and even when the wire is fixed along a curve and used, the size of the wire is limited as compared with the size of the shade.
With the rigidity in this range, it is difficult to maintain the curved shape of the wire.

The Applicant has previously described that Japanese Patent Application No. 61-68816 and Japanese Patent Application No.
However, in the invention of the above-mentioned prior application, the width W of the shade is
The following problems may occur depending on the dimension settings such as.

That is, if the shade is closed at a temperature of about 90 ° C. as the width W increases with respect to a predetermined pleat pitch dimension P, the pleated peak portion of the dough material is creeped and annealed in a closed state. The pleated shape is fixed.

If the shade is opened after this, the shade may bulge up and down from the central portion in the width direction to both ends, and the shade may not be normally folded.

This rampage phenomenon cannot be suppressed only by the support materials on both sides, and the pleated shade having such a structure has to reduce the usable width W.

In the conventional pleat shade, a large number of support materials were required because one of the reasons was to prevent such a phenomenon, and in any case, the set pitch of the support material cannot be increased. It was a problem with pleated shades.

The purpose of the present invention is to elucidate from the texture side of the fabric used,
An object of the present invention is to provide a pleated shade that does not cause the rampage phenomenon even if the set pitch of the support material is increased.

{Means for Solving the Problems} The configuration of the present invention that achieves the above object is as follows. That is, in a pleat shade having supporting members as holding and sliding means at both ends of the main body, the distance W (mm) between fulcrums on the supporting member and the pleat pitch dimension P (m
Depending on m), the density ratio Z between the warp and the weft that make up the fabric
Is formed in a relationship of Z ≦ 3 × 10 ⁻² × P ³ / W.

It is understood that the rampage phenomenon described above is caused by the following mechanical process.

That is, first, by fixing the pleated shape described above,
A shape-maintaining force is generated, and an anti-compression force, which is a stress corresponding to the convolutional force due to the shade opening operation, is generated. This anti-compression force is due to the mechanical superiority or inferiority relationship with the plane life-maintaining force of the pleated plane part, and when the anti-compression force is strong, the twist of the plane part with the support materials on both sides as the fulcrum as an escape area for the force, that is, Manifest as a rampage. That is, it is understood that such a rampage phenomenon is due to the correlation between the anti-compression force and the anti-twisting force that prevents the flat portion from being twisted.

The present invention, after clarifying the above mechanical process, the anti-compression force is generated by the texture of the shade fabric in the longitudinal direction,
And the anti-twisting force is the plane rigidity of the shade fabric, that is,
After confirming that it should be retained by the retainability in the warp direction and the weft direction, this texture is expressed based on the density ratio Z by the equivalent vertical / horizontal / total count (denier).

The density ratio Z is obtained by the following formula.

Z = Σ {(warp direction yarn density per unit length) × (equivalent count (denier)} / Σ {(weft direction yarn density per unit length) × (equivalent count (denier))} However, Σ in the above formula is based on the estimation of the fabric structure in which yarns of different counts (denier) intervene.

Further, the anti-twisting force is in inverse proportion to the first power of the distance W between the fulcrums of the shade and proportional to the third power of the pleated pitch P from the dynamical logical formula. Therefore, any calculation including the above density ratio is possible. By defining the formula, it is possible to find a fabric that does not run wild under arbitrary conditions.

FIG. 1 is a perspective view of an embodiment of a skylight pleat shade according to the present invention.

In FIG. 1, the shade main body 1 has a pleat shape and is used in a substantially horizontal state as a skylight pleat shade main body. The two guide rails 2 are formed so as to hold both sides of the shade body 1 and allow the shade body 1 to slide. The fixed box 3 is arranged at one end of the shade body 1 and fixed to one end of the two guide rails 2 with a screw (not shown). The moving box 4 is provided at the other end of the shade body 1 and has guide rollers 5 at both ends, which come into contact with the protruding portions 6 of the guide rails 2.

As described above, the shade body 1 is slidably held on both sides by the guide rails 2.

The shade body 1 is arranged between the fixed box 3 and the movable box 4, and both ends of the shade body 1 slide on the lower plate portion 7 of the guide rail 2. Therefore, the shade body 1 can be opened and closed by moving the moving box 4.

A baton rod receiving portion 8 for receiving a baton rod for opening and closing the shade body 1 is formed at a substantially lower center of the moving box 4. Therefore, the shade body 1 can be opened and closed by hooking the baton rod on the baton rod receiving portion 7 and pushing and pulling.

Even if the guide rail 2 is curved downward with a radius of curvature of 30 cm or more, the present invention can be used to a sufficient extent. Available.

In addition, as shown in FIG. 2, the pleated shade body 1 is held by providing wires 9 provided along the guide rails 2 and supported at both ends of the guide rails 2 on both end sides of the pleated shade body 1. It is also possible to insert the through hole.

According to the present invention, in the pleat shade as described above, the distance W (mm) between the fulcrums on the support member and the pleat pitch dimension P are set.
(Mm) according to the density ratio of warp and weft constituting the fabric Z
Are formed in a relation of Z ≦ 3 × 10 ⁻² × P ³ / W.

Here, the fabric forming the pleated shade main body is preferably a woven fabric made of synthetic fiber filament yarn such as polyester or nylon, and if necessary, a resin-processed one is used.

It is aesthetically preferable that the pleats have a pitch in the range of 20 to 35 mm.

The distance W between the fulcrums is preferably up to about 1300 mm.

Next, in the pleated shade, the density ratio (Z) of the warp and the weft constituting the cloth is set to Z ≦ 3 × 10 ⁻² × P ³ / according to the distance W between the fulcrums on the support member and the pleat pitch dimension P. The reason why it should be formed in the relationship of W will be described by way of examples.

Comparative Example 1 Using 100 filament polyester, 50 denier 18 filament yarn, warp yarn 100 percent polyester, 75 denier 48 filament yarn, warp density of 310 yarns / in, warp yarn density of 115 yarns / in A woven fabric having a flat design and a top width of 100 cm was woven. The woven fabric was subjected to usual refining and set processing, and was hard-finished using a resin liquid containing a generally used thermoplastic resin and thermosetting resin. After that, pleating is performed with a pleat pitch size P of 25 mm width, and the fabric width is 850 mm.
(W is also the same), cut and aligned, and attached to a support as shown in FIG.

{Z = (70 × 310) / (75 × 115) = 6.2 3 × 10 ⁻² × P ³ / W = 3 × 10 ⁻² × 25 ³ /850=0.55} Leave the pleats for 6 months After that, I tried to fold the pleats, but I couldn't fold the pleats properly because the pleats bulged up and down from the widthwise center to both sides.

Comparative Example 2 Using 100% nylon, 34 filament yarn with 70 denier for warp, using 100% nylon, 34 filament yarn with 70 denier for warp yarn, warp density 123 yarns / in, warp yarn density 87 yarns
A woven fabric with a flat design of / in and a top width of 100 cm was woven. The woven fabric was hard-finished, pleated and evaluated in the same manner as in Comparative Example 1.

Z = (70 × 123) / (70 × 87) = 1.41 3 × 10 ^-2 × P ³ / W = 3 × 10 ^-2 × 25 ³ /850=0.55} Under the above conditions, the pleats should be folded normally. I couldn't.

Example 1 36 filament yarn with 100% nylon and 75 denier was used for the warp, 100% polyester for the warp and 48 with 250 denier.
Using filament yarn, warp density 88 threads / in, warp density 5
A woven fabric having a flat width of 7 strands / in and a weaving width of 100 cm was woven. The woven fabric was hard-finished, pleated and evaluated in the same manner as in Comparative Example 1.

{Z = (75 × 88) / (250 × 57) = 0.46 3 × 10 ⁻² × P ³ / W = 3 × 10 ⁻² × 25 ³ /850=0.55} As a result, it can be folded very well. did it.

Example 2 Aluminum was vapor-deposited to a thickness of 550 angstrom on the woven fabric prepared in Example 1 before the hard finishing resin processing, and then the hard finishing resin processing was performed. After that, it was pleated with a width of 30 mm (P), cut and aligned to a fabric width of 850 mm (same as W), and attached to the support shown in FIG.

{Z = (75 × 88) / (250 × 57) = 0.46 3 × 10 ⁻² × P ³ / W = 3 × 10 ⁻² × 30 ³ /850=0.95} Leave the pleats for 8 months , I then folded the pleats, but I was able to fold them very smoothly.

{Effect} With the above-described configuration, the present invention can provide a pleated shade that does not cause a rampage phenomenon even if the set pitch of the support material is increased.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of a pleated shade according to the present invention. FIG. 2 is a schematic view of a pleated shade according to the present invention showing another embodiment different from FIG. 1: Pleated shade body 2: Guide rail 3: Fixed box, 4: Moving box 9: Wire

Claims (2)

[Claims] 1. A pleat shade in which a supporting member is provided as a holding and sliding means on both side ends of a main body, a distance W (mm) between fulcrums on the supporting member and a pleat pitch dimension P (mm).
According to the above, the pleated shade is characterized in that the density ratio Z of the warp and the weft constituting the cloth is formed in the relationship of Z ≦ 3 × 10 ⁻² × P ³ / W. 2. The pleated shade according to claim 1, wherein the support member is a wire rod which penetrates both ends of the cloth.