JPH03275891A - Roll screen with double sash - Google Patents

Abstract

PURPOSE:To prevent excess tension and looseness with a certain torque on a cloth, by providing cloth-winding up pipes at the upper and lower parts on the inside of a double-sash to fit a roll screen cloth and arranging a driving means and a spring at the winding up pipe. CONSTITUTION:Cloth winding up pipes 2, 3 are arranged at the upper and lower parts on the inside of a double-sash 1 having glass attached to the inside and outside thereof. A cloth 4 is stretched therebetween. Next, a gear motor 5 is equipped to rotate the cloth winding up pipe 3 to the winding up direction via a bevel gear 6. Next, a spring 7 is arranged to give a certain torque to the winding up direction in the other cloth winding up pipe 2 to lower the cloth 4 by the rotation of the pipe 3 to the winding up direction. And a shaft 8 and a clutch spring 9 are rotated by a control unit for initial winding to stretch the cloth 4 with the revolution of the shaft 10. In this way, a specified constant torque can be given to the cloth 4.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a roll screen with a built-in double sash, in which a roll screen is arranged inside a double sash with glass attached to the inside and outside (compared to the conventional technology). ) Both ends of a raw cloth whose light transmittance changes continuously or stepwise in the longitudinal direction are attached to raw cloth winding pipes arranged vertically in parallel, and the raw cloth is attached to one or the other raw cloth winding pipe. A roll screen that changes the light transmittance by moving vertically up and down by winding it up is disclosed in, for example, JP-A-58-222285;
9-118254 and the like.

The raw fabric of this type of roll screen is formed into a raw cloth whose color, pattern, etc. can be changed stepwise or continuously, so that it is possible to easily change not only the light transmittance but also the color, pattern, and pattern. You can get it.

The roll screen, which can be moved up and down to change the color, pattern, light transmittance, etc., is built into a double sash with glass attached to the inside and outside. A roll screen is also disclosed, for example, in Japanese Utility Model Application No. 60-141394.

(The problem to be solved by the invention!) The above-mentioned roll screen with a built-in double sash is capable of winding raw cloth onto either the upper or lower pipes by driving the raw cloth winding pipes arranged above and below with a motor or the like. It is configured to move the raw cloth up and down by picking it up.

In such a configuration, when the raw cloth is rolled up into one raw cloth winding pipe, the raw cloth winding diameter of that pipe increases, and the raw cloth winding diameter of the other raw cloth winding pipe becomes smaller, and accordingly, the raw cloth is rolled up and down. The pulling force changes in the direction, making it impossible to wrap the raw cloth with a constant tension, causing the raw cloth to become too tense and damaging it, or the raw cloth to become loose and unable to be rolled. obtain.

The present invention aims to provide a roll screen with a built-in double sash that allows the raw cloth to be smoothly moved up and down by applying a constant tension to the raw cloth at all times.

Furthermore, as the raw cloth winding diameter of the raw cloth winding pipe changes, the vertical movement surface of the raw cloth within the double sash changes.

The present invention aims to provide a roll screen with a built-in double sash in which the vertical movement surface of the raw cloth does not change as the raw cloth moves.

(Means for Solving Problem 11) As a means for solving the above-mentioned i In the built-in roll screen, raw cloth winding pipes are installed at the top and bottom of the double sash, and each end of the roll screen raw cloth, whose color, pattern, pattern, light transmittance, etc. change in stages or continuously in the vertical direction, is installed at the top and bottom of the double sash. It is attached to a cloth winding pipe, and one winding pipe is connected to a driving means for rotating it in the cloth winding direction, and a constant tension is always applied to the cloth even if the cloth winding diameter of the winding pipe changes. To provide a roll screen with a built-in double sash, characterized in that a spring is arranged in at least one of the winding pipes to give a constant torque in the raw cloth winding direction so as to increase the strength.

In addition, the present invention has a roll screen with a built-in double sash so that the raw fabric is always moved up and down within a fixed vertical plane within the double sash even if the winding diameter of the raw fabric of the winding pipe changes. To provide a structure in which guide rolls are provided below an upper winding pipe and above a lower winding pipe to guide the movement of raw cloth.

(Function) In the present invention, when moving the raw cloth up and down, the tension applied to the raw cloth is always constant, the raw cloth can always be moved smoothly, and the vertical movement surface of the raw cloth is Can always be held in a fixed position.

(Example) The embodiments shown in the drawings will be described below.

FIG. 1 is a sectional view showing an embodiment of the present invention. In the figure, 1 is a double sash with glass attached to the inside and outside, 2 and 3 are raw cloth winding pipes arranged above and below inside the double sash, 4 shows the raw cloth stretched between the winding pipes 2.3.

The raw cloth 4 is configured such that the color pattern, pattern, light transmittance, etc. change stepwise or continuously in the vertical direction (vertical direction in the figure).

Reference numeral 5 denotes a geared motor for rotating the raw cloth winding pipe 3 in the raw cloth winding direction, and its rotation is transmitted to the raw cloth winding pipe 3 via a bevel gear 6.

Further, a spring 7 is arranged in the other raw cloth winding pipe 2 to apply a constant torque in the raw cloth winding direction. Therefore, when the winding pipe 3 is rotated by the motor 5 in the direction of winding the raw cloth onto the winding pipe 3, the raw cloth is moved in the downward direction and the raw cloth is moved in the vertical direction.

At this time, the raw cloth 4 is tensioned by a spring 7, and a constant tension is always applied to the raw cloth. When the winding pipe 2 is rotated in the direction of winding the raw cloth onto the winding pipe 2 and the raw cloth is moved in the upward direction, when the motor is rotated in the opposite direction, the raw cloth is wound around the pipe 2 by the action of the spring. taken.

As mentioned above, a desired torque must be set on the spring 7 in order to provide a constant tension to the raw fabric. In the illustrated embodiment, after the raw cloth is attached to the winding pipe in advance, the first winding control unit rotates the shaft 8 and the clutch spring 9 in the direction of the arrow shown in FIG. give.

Since the raw cloth is attached to the winding pipe, by applying torque to the spring 7 by rotating the shaft 1o, the winding pipe 2 is rotated in a direction that applies tension to the raw cloth, and the raw cloth is tensioned. be done.

In the embodiment shown in FIG. 4, the rotation of the motor 11 causes
The gears 11a and llb are rotated, and the rotation of the gears rotates the clutch receiver 12, which is integrated with the gears, and rotates the shaft 14 fitted to the clutch spring 13.
The shaft 15 fixed to the winding pipe 2 is rotated, and the rotation is transmitted to the winding pipe 2.

At this time, the rotation of the winding pipe 2 is performed by rotating the shaft 14, 15, clutch spring 13 all together, so the torque set in advance for the spring 7 remains constant, and the upper and lower winding pipes of the raw cloth The raw cloth will be wound and unrolled into 2°3 rolls.

Even if the raw cloth winding diameter of the winding pipe 2.3 changes, the raw cloth 4 is always
Guide rolls 1 for guiding the movement of raw fabric are placed below the upper winding pipe 2 and above the lower winding pipe 3 so that the raw fabric is moved up and down within a fixed vertical plane within the double sash.
6.17 are arranged as shown in FIG.

(Effect of the invention) The diameter of the winding pipe changes due to the change in the amount of raw cloth wound up in the upper and lower winding pipes, but in the present invention, due to such a change in the raw cloth winding diameter, excessive It can prevent the phenomenon of tension or, conversely, loosening, and can always tighten raw cloth with a constant torque. Since it is a mechanism that can apply a constant torque to raw cloth, roll screens can be manufactured without being limited by the thickness or length of raw cloth.

Additionally, if a guide roll is provided as described above, the raw fabric will move within a fixed vertical movement plane within the double sash, and as the raw fabric moves, it will not become diagonal within the double sash. is also prevented.

[Brief Description of the Drawings] Fig. 1 is a sectional view showing one embodiment of the present invention, and Fig. 2 is a sectional view showing an embodiment of the present invention.
113 is a partial side view of the upper part of the embodiment shown in FIG. 1 viewed from the left, and FIG. 114 is a sectional view showing another embodiment of the present invention. l-m-double sash 2.3-11 winding pipe 4-m-
Raw cloth 5-m-motor 7-m-spring

Claims (2)

[Claims] (1) In a roll screen with a built-in double sash, in which the roll screen is placed inside a double sash with glass attached to the inside and outside, raw cloth winding pipes are installed at the top and bottom of the inside of the double sash, and color, pattern, etc. Both ends of a roll screen raw cloth whose pattern, light transmittance, etc. change stepwise or continuously are attached to raw cloth winding pipes, and one winding pipe is equipped with a driving means for rotating it in the raw cloth winding direction. A spring that applies a constant torque in the cloth winding direction in at least one winding pipe so that a constant tension is always applied to the raw cloth even if the raw cloth winding diameter of the winding pipe changes. A roll screen with a built-in double sash. (2) Even if the raw cloth winding diameter of the winding pipe changes, the raw cloth is always moved up and down within a fixed vertical plane within the double sash, so that the winding is carried out under the upper winding and the lower winding. A roll screen with a built-in double sash according to claim 1, wherein a roll is provided above the pipe to guide the movement of the cloth.