JP2001136844A - Device for opening or closing double curtain - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem that a conventional double curtain-opening or closing device requires labors for adjustment and repair, because of using wires. SOLUTION: Since using a spiral shaft in stead of a wire to open or close the double curtain, the device for opening or closing the double curtain does not need adjustment and repair.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double curtain opening / closing device in which a curtain is provided in the middle of a greenhouse or glass greenhouse in order to further enhance the heat retaining effect.

[0002]

2. Description of the Related Art As shown in FIG. 5, a conventional double curtain opening / closing apparatus is provided with a gear motor (7) on a ceiling portion of a greenhouse, and a drum (15) is attached thereto to rotate the drum. Then wrap the wire (14) around the drum, stretch the wire in the middle of the greenhouse by pulley (16),
The pipes (5) are attached one by one to two places of the wire. Therefore, by rotating the motor forward and backward, 2
The pipes of the book move toward the center or away from the ends, as indicated by the arrows. So we hand the wire (12) into the greenhouse,
The curtain (13) is placed on a wire, the end of the curtain is fixed to the side of the greenhouse, and the other end is fixed to a pipe to open and close the curtain.

[0003]

As described above, since the conventional double curtain opening / closing device stretches a single long wire, the wire extends or the pulley does not rotate, so that the curtain can be opened / closed. Often you can't. At that time, repairs are performed in high places inside the greenhouse, so it is difficult to adjust the wires and replace the pulleys, which cannot be done by farmers. Therefore, in the event of a breakdown, it is impossible to control the temperature, which affects the crops, and repairs are performed at a contractor's expense.

[0004]

Accordingly, a helical shaft is used as an alternative to the wire. The current spiral axis is
As shown in (a), a spiral shaft welded through a spiral to a shaft or a pipe or a spiral shaft wound with a round steel around a shaft or a pipe as shown in (b) of FIG. )
As shown in the figure, there is also a twisted flat bar twisted from a flat bar.

As for this twisted flat bar, the present applicant has previously developed a method and a machine for twisting a long flat bar straight at the same pitch everywhere, and it is now possible to easily manufacture a twisted flat bar. Further, since the twisted flat bar is obtained by merely twisting the flat bar, there is an advantage that the flat bar can be cheaper than other spiral shafts. Since the effects of the spiral shaft are the same, the description will be continued with a twisted flat steel as an example.

As shown in FIG. 3 (a), the valley of the torsion flat bar (1) is shaped such that the round bar (2) rides at a right angle. Then, as shown in FIG. 3 (b), a steel bar with steel plates (3) attached to both ends is mounted on a torsion flat bar. Then, the pin (4) is inserted and stopped near the lower part of the twisted flat steel so as not to come off. Further, a hole for passing the pipe (5) is made under the pin to prepare a pipe holder (6) through which the pipe passes. The pipe holder moves along the torsion bar by turning the torsion bar.

[0007] Therefore, as shown in FIG.
Are arranged in parallel according to the size of the greenhouse, a pipe holder (6) is attached to each twisted flat steel, and a pipe (5) is passed through the pipe holder. When the torsion bar is simultaneously turned in this way, the pipe holder moves along the torsion bar all at once, and the pipe moves as shown by the arrow. So stop the end of the curtain (13) to the pipe and fix the other end,
The curtain opens and closes.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention based on the above configuration will be described with reference to FIGS. FIG. 1 is a front view of a greenhouse equipped with a double curtain opening and closing device of the present invention,
FIG. 2 is a part of the plan view. First, a gear motor (7) is provided in the greenhouse substantially at the center of the double curtain, and a gear box A (8) having both ends of the shaft is attached to the end of the motor. Next, a gear box B (9) is formed below the worm shaft from which both ends of the shaft are extended, and the worm wheel shaft from which both ends of the shaft are extended.

Then, the shaft of the gearbox A (8) and the worm shaft of the gearbox B (9) are connected to the connecting pipe (1).
0 '). The gearboxes B are arranged at equal intervals in the central longitudinal direction of the greenhouse, and the worm shafts of the respective gearboxes B are connected by connecting pipes (10).

Next, a right-handed twisted flat bar (1) is attached to one side of the worm wheel shaft of the gear box B (9), and a left-handed twisted flat bar (1) is attached to the other. Attachments are made by welding short pipes to both ends of the torsion bar and inserting and connecting one end to the worm wheel shaft and the other to the shaft of the bearing (11) mounted on the side of the greenhouse. When the geared motor (9) is operated by the above installation, all the twisted flat bars installed in the greenhouse rotate at the same time.

Then, a pipe holder (6) is attached to each torsion flat bar, and the pipe (5) is passed therethrough. Next, the wire (12) is passed into the greenhouse below the pipe, the curtain (13) is placed on the wire, the end of the curtain is stopped on the side of the greenhouse, and the other end is stopped on the pipe.

By operating the gard motor (7) as described above, the two pipes in the greenhouse move to the center or move to both sides at the same time as shown by the arrows, so that the curtain can be opened and closed. .

[0013]

The conventional double curtain opening and closing device for a greenhouse is
Adjustment and repair were troublesome because wires were used. However, since the present invention uses a spiral shaft instead of wires, adjustment and repair are no longer required.

[Brief description of the drawings]

FIG. 1 is a front view of a greenhouse equipped with a double curtain opening / closing device of the present invention.

FIG. 2 is a plan view of a greenhouse provided with the double curtain opening / closing device of the present invention.

FIG. 3A is a front view of the pipe holder of the present invention.
(B) is a side view.

FIG. 4 is a drawing of a spiral shaft.

FIG. 5 is a front view of a greenhouse equipped with a conventional double curtain opening / closing device.

[Description of Signs] 1 twisted flat steel 2 round steel 3 plate 4 pin 5 pipe 6 pipe holder 7 gear motor 8 gear box A 9 gear box B 10, 10 'connecting pipe 11 bearing 12 wire 13 curtain 14 wire 15 drum 16 pulley

Claims (1)

[Claims] A plurality of spiral shafts are arranged in parallel, a pipe holder (6) meshing with the spiral of the spiral shaft is attached to the spiral shaft, and one end of the curtain is passed through the pipe (5) through the pipe holder. A double curtain opening / closing device characterized in that the curtain is opened and closed by stopping and fixing the other end and rotating the spiral shaft.