JPH11324531A - Screen of roll blind and manufacture of roll blind and screen of roll blind - Google Patents

Abstract

PROBLEM TO BE SOLVED: To restrain increase of winding diameter of side edge parts and prevent a fray from generating by executing cutting provided with cutout on the side edges of the screen of a roll blind to form fray preventing parts, and lock sewing and melting the thread. SOLUTION: A screen 5 is hung down from the winding shaft 4 of a roll blind 1, and a weight bar 6 is hangingly supported with the lower end of the screen 5. Both side edges of the screen 5 made of woven cloth are cut into wave-like, oblique, zigzag, or the like form to form cutouts. Lock sewing is executed on the side edges with transparent thread of low melting point polyester, and the sewn part is heated to melt sewing thread and form fray prevention parts 8a, 8b. Because the fray prevention parts 8a, 8b are zigzag cut, the sewing thread is melted, difference of thickness between them and the center part of the screen 5 is small, and a fray can be surely prevented from generating.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll blind screen.

[0002]

2. Description of the Related Art In a roll blind, a screen is hung from a winding shaft, and by rotating the winding shaft,
The screen is raised and lowered. The screen fabric can be formed of various materials that can be wound by the winding shaft. However, when the screen fabric is formed of a woven fabric, the cloth is formed into a predetermined width corresponding to the length of the winding shaft. The dough is formed by linearly cutting the fabric.

[0003] In a screen formed by cutting a woven fabric in a straight line along the yarn, the cut edges on both sides of the screen are liable to be frayed, and the frayed yarn causes deterioration in aesthetic appearance.
Therefore, there is a device in which fraying is prevented by performing lock sewing on the cut edge.

[0004]

In the roll blind in which the both sides of the screen cut linearly as described above are lock-stitched, the thickness of the cloth in the lock-sewn portion is equal to the thickness of the cloth in other portions. Thicker than Therefore, when such a screen is wound around a winding shaft, the difference between the winding diameter at both side edges and the winding diameter at the intermediate portion becomes large, which is not preferable from an aesthetic point of view.

There is another problem that the difference between the winding diameter of both side edges and the winding diameter of the middle portion causes a winding deviation. The object of the present invention is to prevent fraying of both side edges of the screen,
An object of the present invention is to provide a roll blind screen capable of suppressing an increase in the winding diameter of both side edges of the screen.

[0006]

According to the first aspect of the present invention, the screen is provided with a cutout provided with a notch at a side edge thereof, thereby forming a fray prevention portion.

According to a second aspect of the present invention, the fray prevention portion is a linear cutout. In claim 3, the fraying prevention portion is a curved notch. According to a fourth aspect, lock sewing is performed on the screen side edge including the fray prevention portion.

According to a fifth aspect, lock sewing is performed on the side edge of the screen including the fray prevention portion, and the sewing thread for the lock sewing is melted. In a sixth aspect, a narrow woven fabric is bonded or sewn to the side edge of the screen including the fray prevention portion.

According to a seventh aspect of the present invention, a bias tape is sewn to the side edge of the screen including the fray prevention portion. In claim 8, the side edge of the screen including the fray prevention portion is coated with a synthetic resin.

In a ninth aspect, a side edge of the screen including the fray prevention portion is folded back and sewn. Claim 10
Then, a straight cut portion was formed below the side edge of the screen by extending the top of the fray prevention portion downward.

According to an eleventh aspect of the present invention, there is provided a roll blind for suspending and supporting a screen from a rotatably supported winding shaft, and rotating the winding shaft to raise and lower the screen. The screen described in Crab was provided.

In a twelfth aspect, the woven fabric is cut obliquely with respect to the yarn, lock sewing is performed on the cut edge, and the lock sewing yarn is melted to produce a screen fabric.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. As shown in FIG.
A support member 3 is attached to both ends of a mounting frame 2 fixed to an upper frame of a window or the like of the roll blind 1.
A take-up shaft 4 is rotatably supported therebetween.

A screen 5 is wound around the winding shaft 4, and a weight bar 6 is suspended from the lower end of the screen 5 hanging from the winding shaft 4. Further, an operation cord 7 is hung from an intermediate portion of the weight bar 6.

In the winding shaft 4, a torsion coil spring for applying a rotating force to the winding shaft 4 in the screen pulling direction, and a stopper device for preventing the winding shaft 4 from rotating in the screen pulling direction. And are built-in. Then, by operating the operation string 7 to lower the screen 5 and operating the stopper device at a desired position, the screen 5 can be held in a state of being lowered to the desired position. In addition, by operating the operation string 7 and releasing the operation of the stopper device, the urging force of the torsion coil spring is used,
The screen 5 can be raised.

The fabric of the screen 5 is formed by cutting a polyester woven fabric, and zigzag fray prevention portions 8a and 8b are formed on both side edges thereof. As shown in FIG. 2, the fray prevention portions 8a and 8b cut both side edges of the cloth in a zigzag shape to form a number of cutouts.
Lock sewing is performed on the side edge with a transparent thread of low melting point polyester, and the sewn portion is heated to melt the sewing thread.

With the roll blind 1 as described above, the following operational effects can be obtained. (1) Since the fray preventing portions 8a and 8b are formed by cutting both side edges of the screen 5 in a zigzag shape, the occurrence of fray can be reduced as compared with the case where the screen 5 is cut linearly. (2) The fray prevention portions 8a and 8b melt the sewing thread after performing lock sewing, so that the cut edge is hardened and the fray can be reliably prevented. (3) Since the fray prevention portions 8a and 8b are cut in a zigzag shape and subjected to lock sewing and then the sewing thread is melted, the difference in thickness from the center of the screen is small. Therefore, even when the screen 5 is wound on the winding shaft 4, the difference in the winding diameter between the center of the screen and the anti-fraying portions 8a and 8b can be reduced, and the appearance of the roll blind can be prevented from deteriorating. .

The above embodiment may have the following configuration. As shown in FIG. 3, both side edges of the screen 5 are cut into a wavy shape to form the fray prevention portions 8a and 8b. Further, as shown in FIG. 4, lock stitches 9 are applied to the fray prevention portions 8a and 8b, and the stitches are further melted.
After the fabric has been rock sewn, the lock sewn portion may be cut and then the suture melted. As shown in FIG. 5, the screen 5 has a shape that becomes wider from the center in the vertical direction upward and downward, and the fray preventing portions 8 that are inclined with respect to the winding shaft on both side edges of the screen.
a, 8b. The fray prevention unit 8
a. Lock sewing 9 is applied to a and 8b, and the sewing thread is melted. -Lock sewing with sewing thread of another material whose melting point is lower than that of the screen fabric. As shown in FIG. 6, zigzag fray prevention portions 8a and 8b are formed on the upper portion of the screen 5, and a straight cut portion 10 is formed on the lower side edge by extending the top of the fray prevention portions 8a and 8b. With such a configuration, the linear cutting portion 10 is wound after the zigzag fray prevention portions 8a and 8b are wound on the winding shaft 4, so that the winding shaft 4 is unevenly wound on the winding shaft 4. The preventing portions 8a and 8b are
Can be obscured.

Further, the anti-fraying portions 8a and 8b
In the state in which the winding shaft 4 is wound, both ends of the winding shaft 4 are exposed. However, by winding up to the linear cutting portion 10, the both ends can be prevented from being exposed. Therefore, it is possible to prevent the aesthetic appearance of the roll blind in a state where the screen 5 is wound up from being deteriorated. As shown in FIG. 7, the screen 5 is cut so that both side edges are curved to form fray prevention portions 8a and 8b. 8, as shown in FIG. 8, a straight cut portion and an oblique cut portion are formed at predetermined intervals on both side edges of the screen 5, and the straight cut portions are displaced in the width direction of the screen at predetermined intervals, and are frayed. Forming the prevention portions 8a and 8b; -As shown in FIG. 9, the fray prevention portions 8a and 8b
Another fabric 11 having a small width is bonded to the side edge of the screen 5 cut as described above with an adhesive 12. The use of ribbons, frills, or the like for the woven fabric 11 can improve the aesthetic appearance of the fray prevention portions 8a and 8b. -As shown in FIG. 10, the fray prevention portions 8a and 8b
Is that the woven fabric 11 is sewn on the side edge of the screen 5, the sewn end of the screen 5 is folded, and the folded portion of the woven fabric 11 and the screen 5 is sewn. As shown in FIG. 11, the fabric 11 is folded in two so as to cover the side edge of the screen 5, and the fabric 11 and the screen 5 are sewn to form the fray prevention portions 8 a and 8 b. . 12, as shown in FIG. 12, the woven fabric is cut obliquely with respect to the yarn, and the bias tape 13 formed into a narrow width fabric is folded inward in a state where the edge of the bias tape 13 is bent inward. Forming the fraying prevention portions 8a, 8b by sewing over the edges of the flaps. As shown in FIG. 13, the fray prevention portions 8a and 8b are formed by applying a coating 14a with a synthetic resin on one side of the side edge of the screen 5. Further, as shown in FIG. 14, the fraying preventing portions 8a and 8b are formed by applying a coating 14b with a synthetic resin on both sides of the side edge of the screen 5. After coating the screen cloth, the screen 5 may be formed by cutting the cloth. As shown in FIG. 15, the side edges of the screen 5 are sewn twice and sewn to thereby prevent the frays 8a, 8
forming b.

The technical ideas other than the claims described in the above embodiment will be described below together with their effects. (1) In claim 3, the screen fabric is formed of a polyester woven fabric, and lock sewing is performed with a low melting point polyester thread. We easily melt lock sewing thread,
The fray prevention part can be hardened. (2) In claim 4, the screen side edge is folded inward, and the narrow cloth is sewn to the folded portion.
Fraying of the screen side edge can be reliably prevented. (3) In claim 4, the narrow-width woven fabric is folded in two and covered on the screen side edge, and the woven fabric and the screen side edge are sewn. Fraying of the screen side edge can be reliably prevented. (4) In claim 5, the bias tape is folded in two, the edge of the bias tape is turned inward, the bias tape is put on the screen side edge, and the bias tape and the screen side edge are sewn. Fraying of the screen side edge can be reliably prevented.

[0021]

As described above in detail, the present invention can provide a roll blind screen capable of preventing the both sides of the screen from fraying and suppressing an increase in the winding diameter of both sides of the screen.

[Brief description of the drawings]

FIG. 1 is a front view showing a roll blind according to an embodiment.

FIG. 2 is a front view showing a fray prevention unit.

FIG. 3 is a front view of a roll blind showing another example.

FIG. 4 is a front view showing lock sewing.

FIG. 5 is a front view of a roll blind showing another example.

FIG. 6 is a front view of a roll blind showing another example.

FIG. 7 is a front view of a roll blind showing another example.

FIG. 8 is a front view of a roll blind showing another example.

FIG. 9 is a cross-sectional view of a screen showing another example.

FIG. 10 is a sectional view of a screen showing another example.

FIG. 11 is a cross-sectional view of a screen showing another example.

FIG. 12 is a cross-sectional view of a screen showing another example.

FIG. 13 is a sectional view of a screen showing another example.

FIG. 14 is a cross-sectional view of a screen showing another example.

FIG. 15 is a cross-sectional view of a screen showing another example.

[Explanation of symbols]

 5 Screen 8a, 8b Anti-fraying part

Claims (12)

[Claims] 1. A roll blind screen characterized in that a cutout is provided at a side edge of the screen to form a fray prevention portion. 2. The roll blind screen according to claim 1, wherein said fray prevention portion is a linear cutout. 3. The roll blind screen according to claim 1, wherein the fray prevention portion is formed as a curved notch. 4. The roll blind screen according to claim 1, wherein lock sewing is performed on a side edge of the screen including the fray prevention portion. 5. The roll blind screen according to claim 1, wherein lock sewing is performed on a side edge of the screen including the fray prevention portion, and a sewing thread for the lock sewing is melted. 6. The roll blind screen according to claim 1, wherein a narrow-width woven fabric is adhered or sewn to the side edge of the screen including the fray prevention portion. 7. The roll blind screen according to claim 1, wherein a bias tape is sewn to a side edge of the screen including the fray prevention portion. 8. The roll blind screen according to claim 1, wherein a side edge of the screen including the fray prevention portion is coated with a synthetic resin. 9. The screen according to claim 1, wherein a side edge of the screen including the fray prevention portion is folded back and sewn.
4. The screen of the roll blind according to any one of claims 1 to 3. 10. The roll blind according to claim 1, wherein a straight cut portion extending downward from a top portion of the fray prevention portion is formed below a side edge of the screen. screen. 11. A roll blind for suspending and supporting a screen from a rotatably supported take-up shaft, and rotating and driving the take-up shaft to move up and down the screen. A roll blind characterized by having a screen. 12. A method of manufacturing a screen for a roll blind, comprising cutting a woven fabric obliquely with respect to a yarn, applying lock sewing to the cut edge, and melting the lock sewing yarn.