JPH01145021A - Apparatus for opening and closing curtain - Google Patents

Abstract

PURPOSE: To draw out a curtain without causing sagging by fitting a pair of pulleys to both ends of a bar attached to the edge of a curtain and winding up both ends of wires looped over the pulleys with a pair of wire winding drums fitted to a wire winding shaft. CONSTITUTION: The curtain winding shaft 1 and winding shaft 2 of a wire 8 are arranged parallel, and a bar 5 is attached to an edge of a curtain 3 wound up on the curtain winding shaft 1. A pair of pulleys 7 are rotatably fitted to both ends of the bar 5, and both ends of the wires 8 looped over the pulleys 7 and drawn out for the wire winding shaft 2 are connected to a pair of wire winding drums 9 fitted to both ends of the wire winding shaft 2. As a result, it is possible to move the bar 5 parallelly all the time when drawing out a curtain. Therefore, it is possible to draw out the curtain without causing sagging on the curtain.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a door opening/closing device for opening and closing openings such as windows.

(Prior art and its problems) In recent years, skyscrapers and even the largest residential buildings have large glass windows and openings such as bay windows, number rooms, and skylights. Although this has the advantage that the interior is bright and open, it has the problem that it becomes colder in the summer due to the greenhouse effect, and colder in the winter due to high heat dissipation from the openings.

In order to solve these problems, a kudzu opening/closing device has been proposed in which a curtain is attached to the opening and the opening and closing of the curtain blocks light or enhances the heat insulation effect.

By the way, in the conventional curtain opening/closing device, a bar is attached to the tip of the curtain wound on the curtain winding shaft, one end of a pair of heddles is connected to both ends of the bar, and the other end of the pair of belts is connected to the heald. The belt is connected to a winding shaft, and the rotation of this belt winding shaft winds up a pair of belts and pulls out the curtain, and conversely, the belt winding shaft rotates to wind up the curtain, so the thickness of the pair of belts is If the belts are different or elongation occurs in one of the belts, the winding diameter of the belt when the belt winding shaft winds the belt will be different. For this reason, when the curtain is pulled out to close the opening, the bar moves in an inclined manner, causing a portion of the curtain to sag due to uneven curtain tension, resulting in an inconvenience of poor appearance.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a curtain opening/closing device which eliminates the above-mentioned disadvantages and allows the curtain to be pulled out without sagging.

[Means for solving problems]

In order to achieve the above object, the present invention arranges a kudzu winding shaft and a wire winding shaft in parallel, attaches a bar to the tip of the curtain wound on the curtain winding shaft, and A pair of wire winding shafts are provided with a pair of pulleys rotatably provided at both ends of the bar, and both ends of the wire passed through the pulleys and pulled out toward the wire winding shaft are provided at both ends of the wire winding shaft. The structure was such that it was connected to a drum.

[Effect]

With the above configuration, by rotating the wire winding shaft in the wire winding direction, the pair of wire winding drums winds both ends of the wire, so that the curtain is pulled out from the curtain winding shaft. At this time, since the wire between the pair of wire take-up reels is loop-shaped, even if the winding length at both ends of the wire wound by the pair of wire take-up drums is reached, the tension acting on the curtain , the two straight wire portions from each of the pair of bools to the wire winding drum are always maintained at the same length. Therefore, the bar can be moved in parallel by winding the wire, and the curtain can be pulled out without causing any slack.

[Example] Hereinafter, an example of the present invention will be described based on the accompanying drawings.

As shown in FIG. 1, the curtain winder 1 and the wire winding shaft 2 are arranged in parallel, and Yl'f3 is wound on the outside of the curtain winder shaft 1.

The curtain 3 is wound on the outside of the curtain winding shaft 1 by rotation of the curtain winding shaft 1. As a method of rotating the curtain winding shaft 1, a spring is incorporated inside the curtain winding shaft 1, which is given elasticity when the curtain 3 is pulled out, and the tension of the spring causes the curtain winding shaft 1 to move in the winding direction. It is possible to use a rotating method or a rotating method using a motor with a brake device.

In the rotation method using a motor, the motor may be attached to the outside of the bracket 4 that supports the curtain winding shaft 1, but in order to increase the size of the vn opening/closing device, the motor may be installed inside the curtain winding shaft 1. It is preferable to reduce the size of the opening/closing device.

Examples of the curtain 3 wound on the curtain winding shaft 1 include a light-shielding curtain, a heat-insulating curtain, a sound-insulating curtain, and an insect net. A bar 5 is attached to the tip of the curtain 3, and a boo IJ7.7 is rotatably supported by a pair of pulley support frames 6.6 attached to both ends of the bar 5.

A wire 8 is passed between the pulleys 7, 7, and both ends of the wire 8 are pulled out toward the wire winding shaft 2, and a wire winding drum 9.
It is wound up at 9.

As shown in FIGS. 2 and 3, the wire take-up drum 9.9 consists of a pair of flanges 10 and a winding drum 11 disposed between the flanges 10.

The pair of flanges 10 is divided into two parts, and the flanges 10.10 are attached to the outside of the wire winding shaft 2 by tightening bolts 12 that connect the divided parts. The flange 10 and the winding drum 11 are a fastener 1 made of Bordeaux Nand.
3 are connected to each other.

A spiral groove 14 for winding the wire is formed on the outer periphery of the winding drum 11, and this spiral groove 14 is oriented in the opposite direction to the spiral groove 14 of the other winding drum 11. Further, as shown in FIG. 4, a radial groove 15 is formed on the end surface of the winding drum 11.
An engagement recess 16 is provided at the inner end of the groove 15 .

Both ends of the wire 8 are connected to the spiral groove 1 of each winding drum 11.11.
4, and its end is wrapped around groove 1 on the end surface of the winding drum.
5 is inserted. In addition, there are protrusions 1 at both ends of the wire 8.
7 is provided, and its protrusion 17 is engaged with the engagement recess 16.

As shown in the second part, the wire winding shaft 2 is formed into a cylindrical shape, and the motor 18 is housed inside the wire winding shaft 2. Motor 1
A rotating body 20 is attached to the rotating shaft 19 of 8, and the rotating body 20 is prevented from rotating with respect to the wire winding shaft 2.

For this reason, as shown in FIG. 3, the end of the motor 18 is supported by a bracket 21, and a
The wire winding shaft 2 can be rotated by supporting the j-shaped sphere 22 with the ball sorgent 24 of the bracket 23 and driving the motor 18.

The curtain opening/closing device shown in the embodiment has the above-mentioned structure, and this opening/closing device is attached to an opening such as a skylight, and opens and closes the opening by pulling out and winding up the curtain 3.

Now, by driving the motor 18 to rotate the wire winding shaft 2 and winding up both ends of the wire 8 with the wire winding drum 9.9, the curtain 3 is pulled out from the curtain winding shaft 1, and the opening is opened. Can be closed.

At this time, the wire 8 whose both ends are wound by the pair of wire winding drums 9.9 forms a loop between the pair of wire winding drums 9, while the curtain 3 pulled out from the curtain winding shaft 1 Since a constant tension is applied, even if the amount of winding at both ends of the wire 8 wound by the pair of wire winding drums 9 and 9 is different, the two wires from the pair of boots I77 to the wire winding drum 9 The straight wire portions a, a' of are always kept equal in length. Therefore, the bar 5 moves in parallel, and as a result, the curtain 3 can be pulled out without sagging.

When opening the opening, the curtain 3 is wound up by the rotation of the curtain winding shaft 1.

In addition to the case where the curtain 3 is pulled out linearly as shown in FIG.
may be arranged in an arc shape, and the curtain 3 may be pulled out along the guide shaft 25. In this case, the bar 5 pulled out together with the curtain 3
In order to prevent the bar from coming into contact with the guide shaft 25, as shown in FIG.
A pulley 7.7 is installed inside the bar 5.

As shown in FIGS. 8 and 9, fastener tapes 27 are attached to both side edges of the curtain 3, outer rails 28 are laid on both sides of the pull-out path of the curtain 3, and fastener tapes are placed inside the outer rails 28. The inner rail 30 that guides the movement of the 8 teeth 29 formed on the side edge of the
If the inner rail 30 is moved outward by the elasticity of the elastic body 31 built into the outer rail 28, the curtain 3 pulled out from the curtain winding shaft 1 will be moved by the elasticity of the elastic body 31. Since the curtain 3 is pulled to both sides, the slack of the curtain 3 can be removed more reliably.

In addition, as shown in FIGS. 10 to 12, two rails 32 and 32 are laid in parallel on the transfer path of the curtain 3, and the bar 5
By attaching hangers 33 to both ends facing the rail 32, and movably supporting the rollers 34 supported by the hangers 33 on the rails 32, the bar 5 moves vertically when the ) 33 is pulled out. can be prevented.

[Effects] As described above, the present invention provides a pair of wire windings in which a pair of pulleys are attached to both ends of a bar attached to the tip of the wire, and both ends of the wire passed through the pulleys are provided on a wire winding shaft. Since the curtain is wound with a take-up drum, the bar can always be moved in parallel when the curtain is pulled out. Therefore, the curtain can be pulled out without causing any slack in the curtain.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the curtain opening/closing device according to the present invention, Fig. 2 is a partially cutaway side view of the wire winding shaft of the same, and Fig. 3 is a partially cutaway plan view of the same; FIG. 4 is a longitudinal sectional front view of the wire winding drum same as above, FIG. 5 is a longitudinal sectional front view showing the same bar, FIG. 6 is a perspective view showing another usage example of the same device, and FIG. 8 is a perspective view showing another embodiment of the same device; FIG. 9 is a sectional view of the rail portion of the above device; FIG. 1O is a perspective view showing still another embodiment of the above device; FIG. 11 is a cross-sectional view of a portion of the hanger, and FIG. 12 is a side view of the hanger. 1... Curtain winding shaft, 2... Wire winding shaft, 3... Curtain, 5... Bar, 7
...Pulley, 8...Wire, 9...Wire winding drum.

Claims (1)

[Claims] The curtain winding shaft and the wire winding shaft are arranged parallel to each other, a bar is attached to the tip of the curtain wound on the curtain winding shaft, and a pair of pulleys are rotatably installed at both ends of this bar. , a curtain opening/closing device in which both ends of the wire passed around the pulley and pulled out toward the wire winding shaft are connected to a pair of wire winding drums provided at both ends of the wire winding shaft.