JPH08193397A - Sun blind for extensible greenhouse etc. - Google Patents

Abstract

PURPOSE: To provide a sun blind for an extensile greenhouse, in which a curtain in the greenhouse and a vinyl plastic hothouse can be opened and closed desirably by a simple structure and the incident area of light can be extended as much as possible at the time of folding. CONSTITUTION: A plurality of steps of rail sections 13 are installed in parallel with a guide rail 11 on a side face, and freely length variable beam bars 20 are stretched among block sections 14 movably fitted to these rail sections 13 in a rockable manner. These block sections 14 are connected by straps 21 while flexible thin-films 22 for shielding light along the straps 21 and being fixed onto the block sections 14 are stuck, and a driving shaft being mounted along eaves, being rotated and driven by a driving device and having brake action stopping the block sections at desired places is borne rotatably near the eaves. The block sections at an uppermost end are driven vertically by the revolution of the driving shaft.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a retractable awning structure for covering a ceiling surface of a greenhouse or a greenhouse (hereinafter referred to as greenhouse).

[0002]

2. Description of the Related Art Greenhouses and greenhouses are used for cultivating flowers and vegetables. A greenhouse is a steel frame with a transparent synthetic resin plate or glass plate attached to it, and a greenhouse is a synthetic resin such as a thin vinyl film that is transparent around a metal or synthetic resin frame such as vinyl. It is covered with a transparent film. Since greenhouses and greenhouses cover the space with a transparent film, there is little air circulation, and the heat of sunlight shining into the room is retained in the space,
The inside temperature of the space can be kept higher than the outside air.

However, when the sunlight is strong like midsummer and the sunshine duration is long, the internal temperature becomes abnormally high. Therefore, it is necessary to adjust the temperature. In addition, depending on the types of flowers and vegetables grown in greenhouses and greenhouses, the sunshine hours may need to be adjusted.

In such a case, a curtain made of a non-translucent or semi-translucent film is stretched over the ceiling surface in a greenhouse or a vinyl house, and the opening area of the curtain is adjusted to control the incident amount of sunlight. The temperature is adjusted and the incident amount of sunlight is adjusted.

[0005]

By the way, in the above-mentioned greenhouses and greenhouses, curtain rails are provided on the ridge part and the lower beam part inside the ceiling, and the upper edge and the lower edge of the curtain are provided with these curtains. The curtain can be closed along the rail. However, the curtains in greenhouses and greenhouses are large, and the mechanism for closing them is unexpectedly complicated and expensive.In addition, when the curtains are emptied or squeezed, the central part is slack. , The curtain cannot be opened smoothly due to this slack. Therefore, measures must be taken to eliminate the adverse effects of this slack, and because the folded curtain cannot be made small, it will interfere with the incidence of sunlight when the curtain is fully folded and the incident light I can't take in much.

SUMMARY OF THE INVENTION The present invention is intended to improve the above-mentioned conventional drawbacks, and an object thereof is to make a curtain in a greenhouse or a greenhouse open and close as desired by a simple structure so that light can be generated when folded. It is intended to provide a retractable greenhouse awning capable of increasing the irradiation area of as much as possible.

[0007]

In order to solve the above-mentioned problems, according to the present invention, an awning for a stretchable greenhouse or the like in which the concealed area of a flexible thin film for covering a light-transmitting portion of the greenhouse or the like is variable In, the guide rails having a plurality of rails on the side surface are provided in parallel with each other in parallel with each other, and the lengths are swingable between the pulleys movably fitted in the rails facing each other. Pulleys that can be changed freely are bridged, and the pulleys that are movably fitted to the rails that are provided in multiple stages are connected with straps for determining the span and movement of the pulleys. A flexible thin film for light shielding fixed to the part is attached, and a drive shaft equipped with a brake function that is installed along with this near the eaves and is driven to rotate by a drive device and stops at a desired position is rotated. Freely support the Awnings etc. telescopic greenhouse, characterized in that allowed to vertically driving the pulley portion of the uppermost is provided by rotation of the shaft.

[0008]

When the flexible thin film for shading such as a curtain is folded, it can be folded with a small width, and at this time, the light incident area can be increased as much as possible. Further, in the middle of closing the flexible thin film, even if the beam bar is inclined with respect to the traveling direction due to a slight difference in span when the strap is fixed, or a difference in strap length due to aging, etc. Since the beam rod passed between the pulley portions movably fitted to the rail portion is swingable and the length thereof is variable, the pulley portion of the beam rod moves smoothly when the beam rod moves.

[0009]

Embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing a state in which a retractable greenhouse awning 3 according to the present invention is attached to a ceiling 2 of a vinyl house 1. This retractable greenhouse awning 3
The structure is closed by the drive device 4 provided in the lower beam portion of the vinyl house 1, and this structure will be described in detail later. On the upper surface of the building material 5 of the vinyl house 1, main pillars 6 are erected vertically at regular intervals. Further, a plurality of columns 8 are erected on the end portion 7, and columns 10 are also erected on the lower beam member 9. A guide rail 11 is provided between the main pillar 6 and the pillar 9 like a rafter. The guide rail 11 is made of metal such as aluminum and has a main plate 12 provided in a vertical direction as shown in FIG. There is. A pulley portion 14 is movably straddled on the rail portion 13. The pulley portion 14 has a saddle 15 having a U-shaped cross section, and a slide pulley 16 which is slidable on the rail portion 13 is rotatably attached to the tip of the saddle 15. As shown in FIG.
A swing plate 17 is swingably attached to the upper surface of the saddle 15 by a pin 18. A slide plate 19 is slidably provided on the swing plate 17 with respect to the swing plate 17.

The tip of a beam rod 20 is fixed to the slide plate 19. At the other end of the beam rod 20, the pulley portion 14 as described above is fixed to a slide plate of the pulley portion that movably straddles adjacent guide rails. Further, the pulley portion and the beam rod configured as described above are movably provided also on another rail portion of the guide rail 11, and the same rail portion 13 is also provided with a plurality of pulley portions and beam rods. There is. Then, the upper guide rail 11 and the lower guide rail 11
The beam rods provided in the above are connected to each other by flexible straps 22 so that upper and lower beam rods alternate with each other so as to take an appropriate span when they are spread. FIG. 4 shows a pulley portion 14 movably fitted in the upper and lower rail portions 13 of the guide rail 11.
FIG. 7 is a side view showing a state in which the guide rail is extended to fill the guide rail. As is clear from FIG. 4, the upper guide rail 1
1 and the bar rod 20 provided on the lower guide rail 11
A semi-translucent or non-translucent flexible thin film 22 made of synthetic resin is provided on the upper surface of the. The flexible thin film 22 covers one surface of the ceiling in the state shown in FIG.

FIG. 5 is a side view showing a state in which the sheave portion 14 movably fitted into the upper and lower rail portions 13 of the guide rail 11 is moved to the lower side of the guide rail. As is apparent from FIG. 5, the flexible thin film 22 attached to the upper surfaces of the beam rods 20 provided on the upper guide rails 11 and the lower guide rails 11 is folded zigzag between the beam rods 20. Be done.

Next, the movement of the beam rod 20, that is, the flexible thin film 2 is performed.
The second closing mechanism and its operation will be described. FIG. 6 is a perspective view schematically showing the closing mechanism. In the figure, a drive shaft 23 is rotatably supported in the vicinity of the lower beam 9 of the vinyl house 1 and is rotationally driven by the drive device 4. An electric motor is provided in the drive device 4, and the rotational force of the electric motor is generated by, for example, a worm gear.
It is connected with 3. For this reason, the drive shaft 23 can be rotated only by the rotational drive of the electric motor, so that even if a rotational force is applied to the drive shaft 23, the brake is applied and the drive shaft 23 does not rotate. A plurality of pulleys 24 are fixed to the drive shaft 23 and rotate with the rotation of the drive shaft 23. 25
Is a pulley rotatably supported in the vicinity of the eaves of the retractable greenhouse awning 3. Reference numeral 26 denotes a pulley rotatably supported in the vicinity of the ridge of the extendable greenhouse awning 3. A pulley 27 is rotatably attached to the retractable greenhouse awning 3 in the vicinity of the eaves on the side opposite to the side where the drive device 4 is disposed. An endless drive wire 28 is wound around the plurality of pulleys and pulleys. Therefore, when the drive device 4 is driven and the drive shaft 23 is rotated, the endless drive wire 28 moves in the solid line direction or the dotted line direction of the arrow depending on the rotation direction of the drive shaft 23.

On the two ceiling surfaces 2, 2 of the retractable greenhouse awning 3, the most advanced pulley section 14 is fixed to each of the driving wires 28 that move in opposite directions. . With this structure, the driving device 4
When is driven, the frontmost beam bar 20 is pulled up on the upper surface of the ceiling 2 toward the ridge, or moves toward the eaves. Then, when the most advanced beam rod 20 is pulled up toward the ridge, the straps 21 attached thereto operate so as to pull up the next beam rod, and as shown in FIG. 4, the entire surface of the ceiling 2 is flexible. Covered with a thin film 22. Cutting-edge beam rod 20
When the beam is pulled down toward the eaves, the beam bar slides toward the eaves due to its own weight, and the flexible thin film 22 covering the entire surface of the ceiling 2 is folded as shown in FIG. Is removed. Since the driving device 4 has the braking action as described above, if the operation of the driving device 4 is stopped while the flexible thin film 22 is being opened or closed, the beam rod 20 is stopped at a predetermined position and the flexible thin film 22 is stopped. The concealed area of the ceiling surface of 22 is desired.

In the middle of the closing of the flexible thin film 22, a slight difference in the fixed length when the strap 22 is fixed,
Alternatively, the beam 20 may not be able to move up and down at a right angle to the guide rail 11 due to a difference in the length of the strap 22 due to aging or the like. However, the saddle 1 of the pulley section 14
5, the swing plate 17 is swingably attached, and the beam rod 20 slides with respect to the swing plate 17.
As shown in, even if the beam rod 20 inclines like a dotted line, the pulley portion 14 can move smoothly on the guide rail.

In the above embodiment, the guide rail 11 has two
Although the stepped rail portion is provided, three or more stepped rail portions may be provided on the guide rail in order to reduce the width when the flexible thin film is folded.

Although the present invention has been described in detail with reference to the embodiments, for example, an awning such as a retractable greenhouse according to the present invention is provided on the lower surface of the ceiling, or a retractable greenhouse according to the present invention. Various modifications and applications are possible within the scope of the present invention, such as providing an awning inside or outside a wall surface of a greenhouse or stopping the drive shaft at a desired position by a brake device such as a disc brake. However, these modifications and applications are not excluded from the scope of the present invention.

[0017]

As described above in detail, in the awning for a retractable greenhouse according to the present invention, guide rails provided with a plurality of steps of rails on the side surfaces are opposed to each other in parallel. Pulleys that are provided and hang freely between the pulleys that are movably fitted to the rails facing each other, and a beam rod that is freely swingable and variable in length is laid, and is movably fitted to the rails that are provided in multiple stages. The parts are connected with a strap for determining the span and for driving the movement, and a flexible thin film for light shielding fixed to the pulley part is attached along the strap, and the thin film is attached near the eaves. Is configured to be rotatably driven by a drive device and has a brake action for stopping at a desired position, and the uppermost pulley portion is vertically driven by the rotation of the drive shaft. Because it is When folded flexible thin film for light shielding, such as, can be folded smaller than the width of the conventional, it can be increased as much as possible the incoming area morphism this time light. With a simple structure, you can close curtains in greenhouses and greenhouses as you wish. Further, in the middle of closing the flexible thin film, even if the beam bar is inclined with respect to the traveling direction due to a slight difference in span when the strap is fixed, or a difference in strap length due to aging, etc. Since the beam rod passed between the pulley portions movably fitted to the rail portion is swingable and the length thereof is variable, the pulley portion of the beam rod moves smoothly when the beam rod moves.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state in which a retractable greenhouse awning according to the present invention is attached to a ceiling of a vinyl house.

FIG. 2 is a partial cross-sectional view showing a part of an embodiment of a retractable greenhouse awning according to the present invention.

FIG. 3 is a partial top view showing a part of an embodiment of a retractable greenhouse awning according to the present invention.

FIG. 4 is a partial cross-sectional view showing a part of an embodiment of a retractable greenhouse awning according to the present invention, showing a state in which a flexible thin film is expanded.

FIG. 5 is a partial cross-sectional view showing a part of an embodiment of a retractable greenhouse awning according to the present invention, showing a state in which a flexible thin film is contracted.

FIG. 6 is a perspective view schematically showing an opening and closing mechanism of a light-shielding flexible thin film.

FIG. 7 is a front view showing an operational positional relationship between a pulley unit and a beam bar.

[Explanation of symbols]

1 ... Vinyl house 17 ...
..Swing plate 2 ... Ceiling 18 ...
..Pin 3 ... Flexible greenhouse awning 19 ...
..Slide plates 4 ... Drive device 20 ...
..Beam bars 5 ... Building materials 21 ...
..Straps 6 ... Main pillars 22 ...
..Flexible thin film 7 ... Tsumami 23 ...
.... Drive shafts 8 ... Support posts 24 ...
.... Pulley 9 ... Lower beam 25 ...
..Pulley 10 ... Support 26 ...
... Pulley 11 ... Guide rail 27 ...
... pulley 12 ... main plate 13 ... rail portion 14 ... pulley portion 15 ... saddle 16 ... pulley

Claims (10)

[Claims] 1. A rail part of a guide rail provided with a plurality of stepped rail parts on a side surface in an awning such as an expandable greenhouse in which a concealed area of a flexible thin film covering a light-transmitting part of a greenhouse is variable. Are provided in parallel and face each other, and a beam rod whose length is freely swingable and swingable is hung between the pulley portions movably fitted in the rail portions facing each other. The pulley portions that are movably fitted are connected with a strap for determining these spans and for driving the movement, and a flexible thin film for light shielding that is fixed to the pulley portion along with the strap is attached. A drive shaft, which is provided in the vicinity of the eaves along with this, is rotatably driven by a drive device and has a braking action to stop at a desired position. The drive shaft is rotatably supported, and the pulley at the top end is rotated by the rotation of the drive shaft. It is special that it can be driven vertically. Awnings greenhouse such a telescopic to. 2. The rail portion provided on one guide rail has at least two steps or more.
Sunshades such as the stretchable greenhouse described in. 3. The awning of the retractable greenhouse or the like is provided on an inclined surface such as a ceiling.
Sunshades such as the stretchable greenhouse described in. 4. The awning for a retractable greenhouse according to claim 3, wherein the awning for the retractable greenhouse is provided inside an inclined surface such as a ceiling. 5. The awning for a retractable greenhouse according to claim 3, wherein the awning for the retractable greenhouse is provided outside an inclined surface such as a ceiling. 6. The awning for a stretchable greenhouse according to claim 1, wherein the awning for a stretchable greenhouse is provided on a vertical wall surface such as a side wall surface. 7. The awning for a stretchable greenhouse according to claim 6, wherein the awning for a stretchable greenhouse is provided inside a vertical wall surface such as a side wall surface. 8. The awning for a stretchable greenhouse according to claim 6, wherein the awning for a stretchable greenhouse is provided outside a vertical wall surface such as a side wall surface. 9. The awning for a retractable greenhouse according to claim 1, wherein the brake mechanism for stopping the drive shaft at an arbitrary position is housed inside the drive device. 10. The awning for a retractable greenhouse according to claim 1, wherein the brake mechanism for stopping the drive shaft at an arbitrary position is provided on the drive shaft.