JPH0835381A - Double roll screen device - Google Patents

Abstract

PURPOSE:To facilitate the assembly, by making two sheets of front side and rear side screen 11 and 12 fixed to a roll by separating their upper ends, varying their physical properties vertically alternatively in the cycle equal to the distance between the upper ends of the screens. CONSTITUTION:The upper ends of two sheets of screens 11 and 12 are fixed to the front edge and the rear edge of at the lower side of a prismatic roll 10. Then, the vertical widths of a penetrative and a nonpenetrative parts S and N are made equal to the distance between the upper ends of the screens 11 and 12 measured along the periphery of the roll 10, and when the heights of the upper ends of the screens 11 and 12 are the same, the part S of the screen 12 is superposed on the part N of the screen 11, and the screens 11 and 12 are made nonpenetrative as the whole. When the roll 10 is rotated 90 deg., the screens 11 and 12 are adhered closely each other, the parts S of the screens 11 and 12, and the parts N of the screens 11 and 12 are aligned at the front side and the rear side each other, and the screens 11 and 12 are made penetrative through the parts S aligned periodically. Consequently, the assembly can be made easier without using a vane and the like.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a roll screen device capable of adjusting light passing through a screen, wind and the like.

[0002]

2. Description of the Related Art A roll screen device capable of controlling the physical properties of a screen is disclosed in JP-A-6-88469.
It is known from JP-A-6-173549. The device disclosed in JP-A-6-88469 is one in which two screens are suspended in parallel from a roll, and a large number of vanes arranged vertically at equal intervals are passed between the screens. It is possible to control the amount of transmitted light or the amount of air by adjusting the inclination of.

The device disclosed in Japanese Patent Laid-Open No. 6-173549 hangs a screen and a ladder cord in parallel from a roll,
A large number of horizontal folds arranged at equal intervals are provided on the screen, and the tip of the horizontal folds is fixed to the ladder cord.The appearance of the screen can be changed by rotating the roll and adjusting the inclination of the horizontal folds. Is possible.

[0004]

In order to assemble the above device, a large number of vanes are passed between two parallel screens to fix them, or one parallel screen and a plurality of ladders are used. Since a large number of lateral folds are passed between the cords to fix them, there is a problem that the assembly cost is high. The present invention has been made to solve this problem, and an object of the present invention is to provide a roll screen capable of controlling the amount of light or the amount of air passing through the screen, which is easy to assemble. It is in.

[0005]

In order to achieve the above-mentioned object, the means adopted by the present invention is such that two screens are suspended from a roll so that they can be wound up in parallel, and the transparency and breathability of each screen are reduced. The physical properties are alternately changed in the vertical direction at a cycle equal to or shorter than the distance between the upper ends of the two screens on the roll circumference.

If the screen is a woven fabric, the physical properties can be changed alternately in the longitudinal direction depending on the weave, and if the screen is a synthetic resin sheet, the physical properties can be changed in the longitudinal direction by printing. . When two mesh fabrics are stretched vertically, bags that penetrate horizontally are sewn so that they are arranged at equal intervals to form a screen, and a non-transparent or non-ventilating sheet is inserted into every other bag. By doing so, the physical properties can be changed alternately. A screen is formed by sewing a large number of pleats horizontally through the transparent cloth so that the bags are arranged at equal intervals.
It is also possible to insert alternate non-transparent sheets into the pleats to alternate the physical properties.

[0007]

When the upper ends of the two front and rear screens descending from the roll are at the same height, the alternating physical properties of the front and rear screens are set to the same phase or opposite phases. If the phase is the same, since the transparent or ventilating parts are periodically arrayed in the vertical direction in the front and rear, the screen will be transparent or ventilating as a whole, but if the phases are opposite, one of the front and rear parts will be Even if it is transparent or breathable, the other part is always non-permeable, so the screen as a whole becomes non-permeable, but it does not become non-breathable because the distance between the front and rear screens is relatively wide.

When the roll is partially rotated from this state and the two front and rear screens are vertically shifted by the alternating pitch of the physical properties, when the upper ends of the two front and rear screens are at the same height, the front and rear If the physical properties of the screen are in the same phase, they are in the opposite phase, and if they are in the opposite phase, they are in the same phase.Because the front and rear screens are close to each other, the screen that was transparent or ventilation is non-transparent. Or, what is non-ventilating and what is non-transparent changes to see-through.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The apparatus of the present invention will be described based on the embodiments shown in the drawings. FIG. 1 is a first embodiment, and as shown in FIG. 1 (a), the upper ends of two cloth screens 11 and 12 are fixed to the lower front and rear edges of the prismatic roll 10 and the lower end is They are connected by a bottom frame 13 having the same front and rear width as the roll 10. Each of the screens 11 and 12 is woven by periodically changing the weft density, and the dense portion N is non-transparent and breathable, while the rough portion S is transparent and breathable. The upper and lower widths of the transparent and non-transparent portions S and N are equal to the distance between the upper ends of the front and rear screens 11 and 12 measured along the circumference of the roll 10,
The arrangement order of the transparent and non-transparent portions S and N from the upper ends of the front and rear screens 11 and 12 is opposite. Therefore, when the heights of the upper ends of the front and rear screens 11 and 12 are the same, the non-transparent portion N of the rear screen 12 is in the transparent portion S of the front screen 11 and the rear screen is in the non-transparent portion N of the front screen.
The twelve transparent portions S overlap so that the overall device is non-transparent. However, since there is a gap between the front and rear screens 11 and 12, the ventilation of the transparent portion S of the front and rear screens is effective even if they are vertically displaced, and the entire screen is ventilation.

When the roll 10 is rotated by 90 degrees,
As shown in (b), the front and rear two screens 11 and 12 are in close contact with each other, and the upper end is displaced by the vertical width of the transparent portion or the non-transparent portion. The non-transparent portions are lined up front and back, and the screens 11 and 12 can be seen through the transparent portions S lined up periodically. Further, although the front and rear screens 11 and 12 are almost in close contact with each other, the transparent portions S arranged in front and rear have ventilation, so that the ventilation of the entire screen is maintained as it is.

As described above, the roll screen device can be changed from the non-transparent property to the transparent property only by rotating the roll 10 by 90 degrees. Further, the roll 10 is rotated to completely roll the front and rear screens 11 and 12 of the roll screen device.
It is also possible to wind up to 10. FIG. 2 shows a second embodiment, and the roll screen device shown in FIG. 2 (a) comprises a cylindrical roll 10 and two synthetic resin sheet front and rear screens.
11 and 12 descend. Front and rear screens secured to roll 10
The upper ends of 11 and 12 are at the same height. Front and rear screens 11, 12
The lower ends of are connected by a bottom rail 13. Transparent portions S and colored opaque portions N are alternately arranged vertically on each screen 11 and 12 at equal intervals. The upper and lower widths of the transparent portion S and the opaque portion N are the same, and are equal to the distance between the upper ends of the front and rear screens measured along the roll. Since both the front and rear screens 11 and 12 start from the transparent portion S in the vertical direction, when the upper ends are at the same height, the transparent portions S and the opaque portions are lined up in front and rear, so that the roll screen device becomes transparent as a whole. . Then, by partially rotating the roll 10, as shown in FIG. 2B, the front and rear screens 11 and 12 are brought into close contact with each other and are vertically displaced by the vertical width of the transparent portion S or the opaque portion N. Since the opaque portion N of the rear screen overlaps with the transparent portion S of 11 and the transparent portion S of the rear screen overlaps with the opaque portion N of the front screen, the roll screen device becomes totally non-transparent.

As shown in the third embodiment of FIG. 3, when two pieces of transparent and breathable mesh fabric are hung vertically, the bags 14 penetrating in the horizontal direction are sewn at equal intervals. The roll screen device can be assembled by wearing the same to form the front and rear screens 11 and 12 and inserting non-transparent or non-breathable sheets 15 into every other bag. The transparency or ventilation of the screen is controlled by rotating the roll as in the above-mentioned embodiment.

Further, as shown in the fourth embodiment of FIG. 4, when two transparent or ventilation fabrics are suspended vertically, the pleats 16 penetrating in the horizontal direction are arranged at equal intervals. It is also possible to sew on the front and rear screens 11 and 12 and insert every other non-breathable or non-transparent sheet 15 into the pleat 16 to assemble the roll screen device. The transparency or ventilation of the screen is controlled by rotating the roll as in the above-mentioned embodiment.

[0014]

As described above, in the roll screen device of the present invention, a large number of vertically aligned vanes or folds are passed between the conventional two front or rear screens or one screen and the rudder cord, and the blades thereof are passed. Unlike the one in which the transparency of the screen is controlled by the plate or the plate inserted in the lateral folds, the physical properties such as the transparency and ventilation of the screen are alternately changed in the vertical direction, and the roll is rotated to rotate the front and rear screens. Since this is a method of controlling the physical properties of the screen by changing the physical properties of the parts that are lined up before and after, there is an excellent effect that a vane whose assembly cost is high is not required and can be manufactured at low cost.

[Brief description of drawings]

FIG. 1 is a perspective view of a double roll screen device having a constant air flow according to a first embodiment of the present invention, in which (a) shows a non-transparent state and (b) shows a transparent state. Show.

FIG. 2 is a side sectional view of a second embodiment, (a) showing a see-through state and (b) showing a non-seeing state.

FIG. 3 is a perspective view of an essential part of the third embodiment,

FIG. 4 is a perspective view of an essential part of the fourth embodiment,

[Explanation of symbols]

10: Roll screen, 11: Front screen, 12: Rear screen, 13: Bottom rail, 14: Bag, 15: Sheet, 16:
Pleats, S: Transparent portion (ventilation portion), N: Non-transparent portion (hard ventilation portion)

Claims (5)

[Claims] 1. A roll (10) which can be rotationally driven, two front and rear screens (11, 12) secured to the roll with their upper ends separated in the roll circumferential direction, and the lower ends of the screens are connected to each other. A double roll screen device having a bottom rail (13), wherein the screen has a physical property that alternates in the vertical direction at a cycle equal to or shorter than the distance between the upper ends of the front and rear screens on the roll. A double roll screen device characterized in that 2. The screens (11, 12) are characterized in that a transparent synthetic resin sheet is coated with an opaque coating at equal intervals to alternately change the transparency in the vertical direction. 1. The double roll screen device according to 1. 3. A screen according to claim 1, wherein each screen (11, 12) is a woven fabric in which the density of wefts is periodically made coarse and dense and the visibility or ventilation is alternately changed in the vertical direction. Heavy roll screen device. 4. Each of the screens (11, 12) is sewn with two mesh fabrics so that the bags (14) penetrating in the horizontal direction are arranged vertically, and the bags are non-transparent or air-impermeable. Sheet 1
5. The double roll screen device according to claim 1, wherein every other 5) is inserted to change the transparency or breathability in the vertical direction. 5. Each screen (11, 12) is sewn with two transparent cloths so that pleats (16) penetrating in the horizontal direction are arranged vertically, and the pleats are non-transparent or air-impermeable. 2. The double roll screen device according to claim 1, wherein every other sheet (15) is inserted to alternately change the transparency or breathability in the vertical direction.