JP2024013202A - Support metal fitting and light block device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a support metal fitting for a band capable of reducing force required for driving a winding shaft, and suppressing deterioration of a sheet, when being installed on a simplified construction, and a light block device capable of reducing force required for driving the winding shaft and suppressing deterioration of a light block sheet.

SOLUTION: There is provided a support metal fitting 5 as means for solving problems, the support metal fitting for supporting a band 4 is installed on a plastic greenhouse H. The greenhouse H comprises: a plurality of arch pipes P1 which is arranged in a depth direction; a light block sheet 2 for covering the arch pipes P1 from a top part to a side part; a winding shaft 3 which is fitted to a lower end of the light block sheet 2 along the depth direction of the arch pipes P1, rolls on the arch pipes P1 for winding the light block sheet 2; and a band 4 which is installed along a longitudinal direction of the arch pipes P1 and can press the light block sheet 2 from an upper side to the arch pipe side. The support metal fitting has a support part for supporting the band 4 at a position separated to an upper side from the top parts of the arch pipes P1.

SELECTED DRAWING: Figure 1

COPYRIGHT: (C)2024,JPO&INPIT

Description

The present invention relates to a support metal fitting and a light shielding device.

Some shading devices are installed in simple structures such as greenhouses, greenhouses, and simple warehouses to adjust the amount of sunlight that enters the structure.

Specifically, the shading device consists of a sheet that is placed on a roof sheet fixed to the roof of a simple structure and covers from the top to the sides of the arch pipe, and a sheet that is attached to the bottom end of the sheet that rolls on the arch pipe. The winding shaft is provided with a winding shaft that winds up and unwinds the sheet, and a drive device that drives the winding shaft (for example, Patent Document 1).

In such a light shielding device, in order to prevent the sheet from flapping during strong winds, a band that can press the sheet against the arch pipe side from above may be provided.

Japanese Patent Application Publication No. 11-299365

Such a band may have one end attached to the top of the simple construct and the other end to the side of the simple construct, or each end may be anchored to each side of the simple construct so that it straddles the top of the simple construct. It can be installed with a seat, but it is necessary to hold the seat down. Therefore, the gap between the band and the arch pipe is narrowed, and the rolled sheet wound around the winding shaft is strongly pressed against the arch pipe side by the band.

In particular, when the winding shaft rolls toward the top of the simple structure, the diameter of the rolled sheet increases, so that the sheet is more strongly pressed against the arch pipe side by the band.

If the pressing force that the rolled sheet receives from the band is strong in this way, the frictional force between the band and the sheet and the frictional force between the sheet and the take-up shaft will increase, causing the force required to drive the take-up shaft to increase. This results in increased force and sheet deterioration.

SUMMARY OF THE INVENTION Therefore, the present invention provides a support metal fitting for a band that, when installed in a simple structure, can reduce the force required to drive the winding shaft and suppress deterioration of the sheet. The purpose of the present invention is to provide a light shielding device that can reduce force and suppress deterioration of a light shielding sheet.

In order to achieve the above object, the support fitting of the present invention includes a plurality of arch pipes arranged side by side in the depth direction, a first sheet that covers the arch pipes from the top to the sides, and a first sheet that covers the arch pipes in the depth direction. a winding shaft that is attached to the lower end of the first sheet along the arch pipe and rolls on the arch pipe to wind up and unwind the first sheet; and a winding shaft that is installed along the longitudinal direction of the arch pipe and rolls the first sheet from above A first sheet is installed in a simple structure including a band that can be pressed against the arch pipe side to support the band, and the band is supported at a position spaced upward from the top of the arch pipe. The device is characterized by comprising a support portion that provides support. According to this configuration, when the support fitting is attached to the top of the arch pipe, the band can be separated from the arch pipe, so that the force of the band pressing the first sheet against the arch pipe side is reduced.

The supporting metal fittings of the present invention are arranged along the depth direction of the simple structure on both sides of the top of the arch pipe, and are divided in the width direction with the top of the arch pipe as a border, and are separated from the first sheet. The second sheet fixing frame may also include a pair of second sheet fixing frames capable of fixing the top side end of the second sheet extended toward the arch pipe. According to this configuration, since the second sheet can be spread across the arch pipe by dividing it in the width direction along the top of the arch pipe, if a part of the second sheet deteriorates or is damaged, one part of the second sheet that has deteriorated or is damaged can be All you need to do is reupholster only the second sheet. Therefore, compared to the case where the roof surface of a simple structure is covered with a single sheet, the cost of replacing the second sheet such as the effort and material cost can be reduced.

Further, the support metal fitting of the present invention includes a first sheet fixing frame that holds the first sheet and is disposed higher than the second sheet fixing frame when viewed from the arch pipe, and extends along the depth direction of the simple structure. The first sheet may be a light-shielding sheet. According to this configuration, the first sheet can be wound up until the winding shaft is positioned above the second sheet fixing frame, so there is no need to remove the first sheet when re-covering the second sheet, and The work efficiency of reupholstery work is improved.

Further, in the support fitting of the present invention, the width in the height direction from the second sheet fixing frame to the first sheet fixing frame is the radius of the roll of the first sheet that is wound up to the maximum by the winding shaft. It may be more than that. If the supporting metal fittings configured in this way are attached to the top of the arch pipe, the supporting metal fittings will act as a barrier even if the roll of light-shielding sheet stored at the top side of the arch pipe is blown by strong winds. This can reliably prevent the roll of the light-shielding sheet from moving to the side opposite to the top of the arch pipe.

Further, the support fitting of the present invention may include a pair of attachment portions that extend along the depth direction of the arch pipe, are arranged on both sides with the top of the arch pipe interposed therebetween, and are fixed to the arch pipe. According to this configuration, even if a force is applied to the support fitting to cause it to fall from side to side when viewed from the depth direction, the support fitting is stably supported by the arch pipe and will not fall.

Further, the support fitting of the present invention includes a swash plate on one side that connects the first sheet fixing frame and one of the second sheet fixing frames, and a swash plate that connects the first sheet fixing frame and the other second sheet fixing frame. and a swash plate on the other side connecting the swash plate, and the swash plate on the one side and the swash plate on the other side are arranged such that the width between the side edges of the second sheet fixing frame is wider than the width between the side edges of the first sheet fixing frame. It may be inclined to According to this configuration, when the first sheet is unwound from the take-up shaft from the state where the first sheet is stored on the top side of the arch pipe, the movement of the take-up shaft toward the side of the arch pipe is controlled by the swash plate. Since it is guided, the first sheet can be quickly unfolded.

Further, in the support metal fitting of the present invention, the second sheet fixing frame has a pair of side wall pieces that form an opening that allows insertion of the second sheet into the inside of the arch pipe, and The side wall piece connects the second sheet to the second sheet such that the length of the extra length between the top side edge of the second sheet and the opening of the second sheet fixing frame is longer than the width of the opening. In the state fixed to the fixing frame, the extra length portion may be folded back toward the side of the arch pipe so that the opening is covered by the extra length portion. According to this configuration, since the opening of the second sheet fixing frame is covered by the extra length of the second sheet, rainwater or the like can be prevented from entering the opening. Furthermore, when the first sheet is stored and unfolded, the take-up shaft rolls on the extra length of the second sheet, so that the first sheet wound around the take-up shaft is attached to the side wall of the second sheet fixing frame. This can prevent damage caused by the edges of the

Further, in the light shielding device of the present invention, the first sheet is a light shielding sheet, and a winding shaft that can roll or unwind the first sheet by rolling on the arch pipe; The arch pipe is characterized by comprising a band installed along the longitudinal direction and capable of pressing the first sheet from above, and the support fitting attached to the top of the arch pipe. According to this configuration, the band is supported at a position spaced apart from the top of the arch pipe, and the band is spaced apart from the arch pipe, so that the force of the band pressing down the first sheet toward the arch pipe side is reduced.

Further, the light shielding device of the present invention is provided below the lower end of the first sheet in a state where it is unwound to the maximum extent by the winding shaft on the side part of the simple structure, so as to connect one end of the band to the side of the simple structure. A second support metal fitting may be provided to support the device at a position spaced apart from the side portion. According to this configuration, one end of the band is supported by the second support metal fitting at a position separated from the side of the simple structure, so the band presses the first sheet toward the greenhouse side even near the side of the arch pipe. The force becomes smaller. Therefore, since the light shielding device can further reduce the friction that occurs between the first sheet and the take-up shaft when the first sheet is unfolded or stored, deterioration of the first sheet can be further suppressed. In addition, the light shielding device can further reduce the force required to drive the take-up shaft when the first sheet is unfolded or stored.

Further, in the light shielding device of the present invention, the second supporting metal fitting includes a fixing part fixed to a side part of the simple structure, and a fixing part that has elasticity and stands up from the fixing part toward the outdoor side of the simple structure. It has an upright part and a support part that is provided at the tip of the upright part and supports one end of the band, and the tip of the upright part is positioned above the normal line of the arch pipe passing through the base end of the upright part. It may be located. According to this configuration, the support part provided at the tip of the upright part and directly supporting the band is located closer to the top of the simple structure than the normal line of the arch pipe passing through the base end of the upright part. Therefore, the support part receives the tension of the band and is pressed toward the arch pipe, but the line of action of the pressing force that the support part receives from the band deviates from the axial direction of the straight piece, so the upright part Due to the force, the simple construct receives a moment that tilts it toward the top side using the base end as a fulcrum. Therefore, when the diameter of the roll of the first sheet increases and the pressing force of the band exceeds a certain level when the first sheet is stored, the upright part is elastically deformed so as to fall down toward the top of the arch pipe. The support part that supports one end of the band approaches the support part side of the support fitting that supports the part of the band that faces the top of the arch pipe, and the band is loosened by that much, so the pressing force of the band is reduced. Therefore, according to this configuration, when the pressing force of the band becomes particularly large when the first sheet is stored, the pressing force of the band can be reduced, so that the frictional force generated between the band and the first sheet and the first sheet are reduced. The frictional force generated between the winding shaft and the winding shaft can be effectively reduced.

Further, the light shielding device of the present invention includes a protection member that is attached to the arch pipe at least in a range where the winding shaft can roll and comes into contact with the winding shaft, and the protection member includes a It may be attached to at least two of the arch pipes. According to this configuration, when the first sheet is unfolded or stored, the winding shaft rolls on the arch pipe through the protective member, so that the first sheet wound around the winding shaft rolls onto the arch pipe or the second sheet. It can prevent rubbing and deterioration. In addition, since the protective member is attached to at least two arch pipes, if the protective member is attached to the arch pipe that supports at least the part that is approximately equidistant from the center of the winding shaft in the axial direction, the winding shaft can be The protective member can prevent it from tilting.

Further, in the light shielding device of the present invention, the protection member is made of rubber and has a convex portion in the center in the transverse direction that swells toward the side opposite to the arch pipe and forms a gap between the protection member and the arch pipe. It's okay. According to this configuration, when the protective member is connected to the arch pipe by screwing the screw into the arch pipe through the convex part, the head of the screw crushes and deforms the convex part, so that the head is not embedded in the convex part. It becomes hidden. Therefore, there is no possibility that the first sheet will be damaged by the head of the screw.

Further, in the light shielding device of the present invention, the protection member is made of rubber, and is provided between a bottom portion extending along the upper surface of the arch pipe and a bottom portion that stands up from one end of the bottom portion in the lateral direction. and a cover part that covers the bottom part with a predetermined spacing therebetween, and the spacing may be equal to or larger than the height of the head of a screw that penetrates the bottom part and is screwed into the arch pipe. According to this configuration, when the screw is screwed into the arch pipe through the bottom and the protective member is connected to the arch pipe, the head of the screw is covered by the cover part, so the head of the screw is There is no risk of the first sheet being damaged. In addition, since the distance between the bottom and the cover is greater than the height of the screw head, the cover is pushed up by the screw head, causing the winding shaft running on the protective member to tilt. There is no fear.

Further, the light shielding device of the present invention includes a waterproof sheet that is supported by the support portion of the support fitting and is disposed between the first sheet and the second sheet and covers at least one of the second sheet fixing frames. You may prepare. According to this configuration, since the second sheet fixing frame of the support metal fitting is covered with the waterproof sheet, it is possible to reliably prevent rainwater or the like from entering into the opening of the second sheet fixing frame. Therefore, there is no fear that rainwater or the like entering the opening of the second sheet fixing frame will flow to the inner surface of the second sheet fixing frame, which is the surface facing indoors of the plastic greenhouse, and enter the simple structure.

According to the support fitting of the present invention, when installed in a simple structure, it is possible to reduce the force required to drive the winding shaft and suppress deterioration of the sheet. Further, according to the light shielding device of the present invention, it is possible to reduce the force required to drive the winding shaft and suppress deterioration of the light shielding sheet.

FIG. 1 is a perspective view of a simple construct according to the present embodiment. FIG. 2 is a front view of the simple construct according to the present embodiment. FIG. 2 is a partially enlarged front view of the roof portion of the simple structure according to the present embodiment. FIG. 7 is a partially enlarged front view of a roof portion of a simple structure provided with a modified light shielding device. FIG. 2 is an enlarged perspective view showing a portion of the end of the band fixed to the simple construct according to the present embodiment. It is a perspective view of the 2nd support metal fitting of this Embodiment. It is a perspective view of the 2nd support metal fitting of a modification. It is a perspective view which expands and shows the installation part of the 2nd support metal fittings in the simple structure of a modification. (A) is an enlarged front view showing a portion of a modified second support fitting fixed to a simple structure. (B) is an enlarged front view showing the fixed part of the second support fitting to the simple structure of the modified example, and is a diagram showing a state in which the upright part of the second support fitting falls down toward the top side of the arch pipe; be. (A) is an enlarged sectional view showing a state in which the protection member of the present embodiment is placed over an arch pipe. (B) is an enlarged sectional view showing a state in which the protection member is fixed to the arch pipe via screws. It is an enlarged sectional view showing a state where a protection member of a modification is fixed to an arch pipe via a screw. FIG. 2 is an enlarged perspective view showing the installation location of the motor of the drive device according to the present embodiment. FIG. 3 is an exploded perspective view of the telescoping rod according to the present embodiment. FIG. 1 is an enlarged perspective view of a portion of the converter according to the present embodiment, and a partial cross-sectional view showing the internal structure of the converter. FIG. 2 is a front view of the simple structure of the present embodiment, showing a state in which the light-shielding sheet has been switched from the state shown in FIG. 1 to the unfolded or stored state. It is a front view of the simple structure of this embodiment, and is a diagram showing a state in which the motor of the drive device is installed on the end face of the simple structure.

The present embodiment will be described below with reference to the drawings. Like numbers throughout the several drawings indicate like parts.

The simple structure is a vinyl house H in this embodiment. As shown in FIG. 1, the vinyl house H includes a plurality of arch pipes P1 arranged side by side in the depth direction, a transparent sheet S spread directly over the arch pipe P1, and a light-shielding sheet S that covers the transparent sheet S from above. A light shielding device 1 is provided as a sheet winding device capable of winding up and feeding out a sheet 2 for use.

As shown in FIGS. 1 and 2, the shading device 1 of this embodiment is a shading device that is installed at the top of an arch pipe P1 and covers the arch pipe P1 from one side to the top and to the other side. A winding shaft 3 that is attached to the lower end of the light-shielding sheet 2 along the depth direction of the arch pipe P1 and rolls on the arch pipe P1 to wind up and unwind the light-shielding sheet 2, and the arch pipe P1. A band 4 is installed along the longitudinal direction of the light shielding sheet 2 and can press the light shielding sheet 2 toward the arch pipe P1 from above. and a support fitting 5 that supports the device at a position spaced upward.

Hereinafter, each part of the vinyl greenhouse H of this embodiment will be explained in detail. The arch pipe P1 of this embodiment has a pair of standing parts P1a that stand up straight from the ground G, and a substantially arc-shaped arch part P1b that connects the upper ends of each standing part P1a. In the following description, the apex portion of the arch pipe P1 is referred to as the top portion of the arch pipe P1, and the shoulder portion that is the boundary between the upright portion P1a and the arch portion P1b of the arch pipe P1 is referred to as the side portion of the arch pipe P1.

Furthermore, the front side of the vinyl house H when viewed from the depth direction is the gable side of the vinyl house H, and the side surface of the vinyl house H when viewed from the depth direction and within the range of the upright part P1a of the arch pipe P1 is the side surface of the vinyl house H when viewed from the depth direction. Let the side surface of H be the side surface of the vinyl house H, and the surface within the range of the arch part P1b of the arch pipe P1 when viewed from the depth direction be the roof surface of the vinyl house H.

In this embodiment, the translucent sheet S stretched over the arch pipe P1 includes a side sheet S1 covering the left and right sides of the greenhouse H, and a side sheet S1 at the front and rear of the greenhouse H, as shown in FIGS. 1 and 2. Gable side sheets S2 each cover the gable sides, and two sheets are divided in the width direction with the top of the arch pipe P1 as a border and are stretched from the top of the arch pipe P1 to each side to cover the roof surface of the greenhouse H. It is composed of roof side sheets S3, S3.

Specifically, as shown in FIGS. 1 and 2, when viewed from the depth direction, each standing portion P1a of the arch pipe P1 has an upper portion extending along the depth direction from the upper end side of the standing portion P1a. A side frame F1 and a lower side frame F2 extending along the depth direction over the lower end of the upright portion P1a are arranged vertically. Then, by fixing each end of the side sheet S1 between the upper and lower side frames F1 and F2, the side sheet S1 is stretched on each side of the greenhouse H, respectively.

Moreover, as shown in FIG. 2, the greenhouse H supports the arch pipe P1 placed on the gable side from below, and also includes a plurality of support pipes P2 placed along the width direction of the greenhouse H, and each A plurality of gable frames F3 are provided between the prop pipes P2 along the width direction of the greenhouse H, and an opening surrounded by the prop pipes P2, the gable frames F3, and the ground G is formed. .

Then, by fixing the gable side sheet S2 to the gable side frame F3 while avoiding the opening, the gable side sheet S2 is extended to the gable side of the greenhouse H, and the opening functions as an entrance to the greenhouse H. I'm letting you do it.

Further, although not described in detail, the side frames F1 and F2 and the end frame F3 of this embodiment each have a groove formed with an opening narrower than the bottom, and a sheet is placed in this groove. With S1 and S2 inserted, by fitting an elastic member made of a corrugated metal spring onto the sheets S1 and S2, each sheet S1 and S2 is moved to each frame F1, F2, and the other by the elastic force of the elastic member. It is fixed in F3. Note that this elastic member is not limited to a wave-shaped metal spring, and may be other elastic members such as rubber or a coil spring.

Further, on the gable side of the greenhouse H, rails (not shown) are spanned between the support pipes P2 and P2, respectively, along the upper and lower frames of the opening. By installing the pair of doors D, D so as to be able to slide freely along the rail, the opening of the greenhouse H can be opened and closed by the door D. Note that the number of doors D is not particularly limited, and may be determined as appropriate depending on the size of the opening.

Further, in this embodiment, the door D is a sliding door, but the opening/closing direction of the door D is not particularly limited. For example, the door D may be a hinged door. In addition, although the said opening part and the door D should just be provided in at least one gable side of the vinyl house H, they may be provided in both gable sides.

Although details will be described later, as shown in FIGS. 1, 2, and 3, a support fitting 5 extending in the depth direction is spanned over the top ends of the plurality of arch pipes P1. Roof-side sheet fixing frames 51, 51 are provided on the left and right sides of the support fitting 5, respectively, when viewed from the depth direction. When viewed from the depth direction, there is a space between the roof side sheet fixing frame 51 on the right side of the support fitting 5 and the right side side frame F1, and between the roof side sheet fixing frame 51 on the left side of the support fitting 5 and the left side side frame F1. A roof side sheet S3 is fixed between them. Accordingly, in this embodiment, the two roof-side sheets S3, S3 are divided in the width direction with the top of the arch pipe P1 as a border, and stretched from the top of the arch pipe P1 to each side.

Note that although a soft sheet such as a polyolefin film such as a vinyl chloride film or a PET film is used as the transparent sheet S in this embodiment, a hard sheet such as a polyester film or a fluorine film may also be used. good.

In addition, although this embodiment describes a single-building type vinyl house H that is installed independently, the vinyl house H may also be a multi-building type in which a plurality of buildings are connected from side to side in the width direction. good.

Next, the light shielding device 1 will be explained in detail. As shown in FIGS. 1 and 2, the light shielding device 1 of this embodiment includes a support metal fitting 5 attached to the top of an arch pipe P1, and a support metal fitting 5 attached to the support metal fitting 5 at the left-right center position when viewed from the depth direction of the greenhouse H. The light-shielding sheet 2 to be fixed, and the winding that is attached to each end of the light-shielding sheet 2 and can roll on the arch pipe P1 from one side to the top of the arch pipe P1 via the light-transmitting sheet S. It includes a take-up shaft 3 and two drive devices 6 that respectively drive each take-up shaft 3.

As will be described in detail later, the light-shielding sheet 2 of this embodiment covers the roof surface of the greenhouse H by straddling the top of the arch pipe P1, and is supported by the central portion facing the top of the arch pipe P1. It is fixed to the metal fitting 5. Moreover, a winding shaft 3 along the depth direction of the vinyl greenhouse H is attached to each end of the light-shielding sheet 2. Therefore, when the drive device 6 rolls the winding shaft 3 to one side of the arch pipe P1, the light-shielding sheet 2 is unwound from the winding shaft 3, as shown on the left side in FIG. Since the roof side sheet S3 is in an expanded state covering the range from the top of the arch pipe P1 to one side, the amount of sunlight entering the greenhouse H can be reduced. On the contrary, when the winding shaft 3 is rolled to the top side of the arch pipe P1 by the driving device 6, the light-shielding sheet 2 is wound around the winding shaft 3, as shown on the right side of FIG. Since the P1 is in a stored state in which it is rolled up to the top side, sunlight enters the greenhouse H without being blocked by the light-shielding sheet 2. Therefore, the light shielding device 1 of this embodiment can adjust the amount of sunlight entering the greenhouse H by driving the winding shaft 3 using the drive device 6 to unfold or store the light shielding sheet 2.

The material and structure of the light-shielding sheet 2 are not particularly limited as long as it has enough flexibility to be wound around the winding shaft 3 and can reduce the amount of sunlight passing through it. For example, the light-shielding sheet 2 may be formed of a material with a high light-shielding rate, or may be formed in a mesh shape.

As shown in FIG. 3, the support fittings 5 of this embodiment are frame-shaped members extending along the depth direction of the greenhouse H, and are arranged on both sides of the arch pipe P1 with the top of the arch pipe P1 in between. A pair of attachment parts 50, 50 fixed to the pipe P1 via a joint 10, a pair of roof-side sheet fixing frames 51, 51 provided at the upper end of each attachment part 50, 50, and each roof-side sheet fixation frame. A pair of swash plates 52, 52 extend upward from the upper ends of the swash plates 51, 51, and a light shielding sheet fixing frame 53 connected to the upper ends of the pair of swash plates 52, 52.

As shown in FIG. 3, each attachment part 50 of this embodiment includes a bottom piece 50a that can abut on the upper surface of the arch pipe P1 with a predetermined width toward the top side of the arch pipe P1, and an arch of the bottom piece 50a. A vertical piece 50b stands up perpendicularly to the bottom piece 50a from the opposite end of the pipe P1 to the bottom piece 50a, and a vertical piece 50b stands up in a curved manner from the top side end of the arch pipe P1 of the bottom piece 50a and extends diagonally upward on the side of the vertical piece 50b. One hook piece 50c, an upper piece 50d extending parallel to the bottom piece 50a from the tip of the vertical piece 50b toward the anti-vertical side of the arch pipe P1, and an upper piece 50d extending downward on the anti-vertical side while curving from the tip of the upper piece 50d. The second hooking piece 50e is formed such that the tip extends obliquely and is bent toward the vertical piece 50b.

Further, as shown in FIG. 3, the joint 10 of this embodiment is an arch-shaped metal fitting that is arranged in a direction penetrating the plane of the paper and can straddle the arch pipe P1. It has a notch opening 10a that can accommodate the attachment part 50 of the metal fitting 5, and a pair of wedge holes 10b, 10b that are provided on both lower end sides and face each other with the top interposed therebetween.

Further, a pair of claws 10c, 10c facing each other toward the notch opening 10a are provided at the top, and the width between the claws 10c, 10c is narrower than the width of the attachment part 50. Therefore, although the notch opening 10a allows the support fitting 5 to be inserted from the side of the mounting portion 50, the claw portions 10c restrict the insertion of the support fitting 5 upwardly from the notch opening 10a.

As shown in FIG. 3, when the joint 10 is straddled over the arch pipe P1 and the wedge 11 is inserted into the wedge hole 10b with the mounting part 50 of the support fitting 5 accommodated in the notch opening 10a, the arch The pipe P1 and the mounting part 50 of the support fitting 5 are held between the pair of claw parts 10c, 10c and the wedge 11, so that the mounting part 50 can be fixed to the arch pipe P1.

As described above, in the present embodiment, the pair of attachment parts 50, 50 are arranged on both sides of the arch pipe P1 with the top thereof interposed therebetween and are fixed to the arch pipe P1. Even if a force is applied to tilt the arch pipe P1 from side to side, the support fitting 5 is stably supported by the arch pipe P1 and will not fall.

Furthermore, in this embodiment, the pair of left and right mounting portions 50, 50 in FIG. If secured, the pair of left and right mounting parts 50, 50 can be fixed only to some of the arch pipes P1, or the left mounting part 50 in FIG. 3 and the right mounting part 50 in FIG. 3 can be fixed to each arch pipe. They may be fixed alternately in the depth direction with respect to P1. In this way, the number of joints 10 that fix the attachment portion 50 to the arch pipe P1 can be reduced.

Moreover, the structure of the joint 10 mentioned above is an example, Comprising: The structure of the joint 10 is not specifically limited as long as the attachment part 50 of the support metal fitting 5 can be fixed to the arch pipe P1.

Further, the shape of the attachment portion 50 is also an example, and is not limited to the shape described above, but according to the present embodiment, the bottom piece 50a and the vertical piece 50b function as a water receptacle having an L-shaped cross section. In detail, for example, when the support fitting 5 gets wet with rain and rainwater drops flow from the end of the support fitting 5 in the depth direction onto the inner surface of the support fitting 5 (indoor side surface of the greenhouse H), When water droplets form on the inside of the metal fitting 5 due to dew condensation, these water droplets travel along the inner surfaces of the swash plate 52 and the roof-side sheet fixing frame 51, and are collected in the water receiver consisting of the bottom piece 50a and the vertical piece 50b. , it is possible to prevent water droplets from entering the greenhouse H.

Further, the mounting portion 50 may be fixed to the arch pipe P1 by means other than the joint 10. For example, the mounting portion 50 may be fixed to the arch pipe P1 by screwing a tapping screw through the mounting portion 50. Good too. However, when the mounting part 50 is fixed to the arch pipe P1 with the joint 10 as in this embodiment, the screw hole created when the tapping screw is screwed in does not open in the mounting part 50, so dew condensation may occur inside the support fitting 5. There is no possibility that the generated water droplets will enter the greenhouse H through the gap formed between the tapping screw and the screw hole.

Next, as shown in FIG. 3, each roof-side sheet fixing frame 51 of the present embodiment has a bottom piece 51a extending upward from the tip of the vertical piece 50b of each mounting portion 50 while being inclined in a direction in which the upper ends approach each other. and a pair of side wall pieces 51b and 51c that stand up from the upper end of the bottom piece 51a and the upper part of the upper piece 50d of the attachment part 50 while being inclined in a direction in which their tips approach each other. Thereby, an opening 51d narrower than the width of the bottom piece 51a is formed between the pair of side wall pieces 51b and 51c.

Then, as shown in FIG. 3, with the roof sheet S3 inserted into the opening 51d of the roof sheet fixing frame 51, an elastic member 12 made of a corrugated metal spring is fitted over the roof sheet S3. By doing so, the top side end (upper end) of the roof side sheet S3 can be fixed to the roof side sheet fixing frame 51 by the elastic force of the elastic member 12. Note that the elastic member 12 is not limited to a wave-shaped metal spring, and may be other elastic members such as rubber or a coil spring.

Therefore, the roof side sheet S3 on the right side in FIG. 2 has its upper end fixed to the right side roof side sheet fixing frame 51 and its lower end fixed to the right side side frame F1. On the other hand, the roof side sheet S3 on the left side in FIG. It extends from the top of the arch pipe P1 to the left side.

As described above, in this embodiment, the roof side sheets S3 and S3 can be divided in the width direction with the top of the arch pipe P1 as the border and stretched from the top of the arch pipe P1 to each side. When parts of S3 and S3 are deteriorated or damaged, it is sufficient to replace only the deteriorated or damaged roof side sheet S3.

Therefore, compared to the case where the roof surface of the greenhouse H is covered with a single sheet, it is possible to reduce the cost of replacing the roof side sheet S3, such as the effort and material cost. However, the roof surface of the greenhouse H may be covered with one sheet.

Returning to this embodiment, the roof side sheet S3 is connected to the top side end of the roof side sheet S3 and the opening 51d of the roof side sheet fixing frame 51 (the side wall piece 51b on the top side (upper side in FIG. 3) of the arch pipe P1). The sheet is fixed to the roof-side sheet fixing frame 51 such that the length of the extra length S3a up to the tip of the sheet is longer than the width of the opening 51d (width between the tips of the pair of side wall pieces 51b and 51c). Furthermore, in this state, as shown in FIG. 3, the extra length S3a of the roof sheet S3 is folded back toward the side opposite to the top of the arch pipe P1 by the side wall piece 51b on the upper side in the figure, thereby opening the opening 51d. covered.

In other words, the inclination angle of the upper side wall piece 51b in FIG. It is preferable that the angle is set so that the extra length portion S3a can be folded back.

In this way, when the opening 51d is covered by the extra length S3a of the roof side sheet S3, the extra length S3a can prevent rainwater etc. from entering into the opening 51d. However, if there is no need to prevent water from entering into the opening 51d, the extra length portion S3a of the roof side sheet S3 does not have to have a length that covers the opening 51d.

Further, the shape of the roof-side sheet fixing frame 51 described above is just an example, and the shape of the roof-side sheet fixing frame 51 is not particularly limited as long as the top side end of the roof-side sheet S3 can be fixed.

Next, as shown in FIG. 3, the pair of swash plates 52, 52 of this embodiment are inclined in a direction from the upper side wall pieces 51b, 51b of each roof-side sheet fixing frame 51, 51 so that their tips approach each other. It has a pair of sloped parts 52a, 52a that stand upright, and a pair of straight parts 52b, 52b that extend directly upward from the upper end of each sloped part 52a, 52a and are connected to the light-shielding sheet fixing frame 53. .

In this way, the pair of swash plates 52, 52 of this embodiment have a width wider between the lower ends, which are the side edges of the roof-side sheet fixing frame 51, than between their upper ends, which are the side edges of the light-shielding sheet fixing frame 53. It is slanted so that

Further, the light-shielding sheet fixing frame 53 of the present embodiment has a groove in which the light-shielding sheet 2 can be fixed, and also functions as a support portion that supports the band 4, which will be described later. Specifically, as shown in FIG. 3, the light shielding sheet fixing frame 53 of this embodiment has an upwardly convex shape connected to the upper end of the straight portion 52b of the swash plate 52 when viewed from the depth direction. a bottom piece 53a having a curved shape; a pair of side pieces 53b, 53b extending vertically upward from each end of the bottom piece 53a; It has a pair of upright pieces 53c, 53c that stand up while tilting, and horizontal pieces 53d, 53d that extend horizontally from the inner boundary of each side piece 53b, 53b and each upright piece 53c, 53c so that their tips face each other. .

In the light-shielding sheet fixing frame 53 configured in this manner, as shown in FIG. 3, a groove with a narrow opening width is formed by a pair of horizontal pieces 53d, 53d and a pair of upright pieces 53c, 53c. Then, as shown in FIG. 3, with the light-shielding sheet 2 inserted into the groove of the light-shielding sheet fixing frame 53, an elastic member 13 made of a corrugated metal spring is fitted onto the light-shielding sheet 2. The light-shielding sheet 2 is fixed to the light-shielding sheet fixing frame 53 by the elastic force of the elastic member 13. Note that the elastic member 13 is not limited to a wave-shaped metal spring, and may be other elastic members such as rubber or a coil spring. Further, the shape of the light-shielding sheet fixing frame 53 described above is just an example, and the shape of the light-shielding sheet fixing frame 53 is not particularly limited as long as the light-shielding sheet 2 can be fixed.

Moreover, as shown in FIG. 3, a gap is formed between the horizontal piece 53d and the bottom piece 53a. Here, the support fitting 5 of this embodiment is constructed by arranging a plurality of divided bodies divided in the longitudinal direction of the greenhouse H and arranging them along the depth direction of the greenhouse H, and connecting each divided body. has been done. Although not shown, these divided bodies are connected by inserting each end of a rectangular plate-shaped connecting plate into the gap formed between the horizontal piece 53d and the bottom piece 53a of the adjacent divided bodies. There is.

Further, in this embodiment, as shown in FIG. 3, the bottom piece 53a of the light-shielding sheet fixing frame 53 is curved to be convex upward, and the upper end of the straight part 52b of the swash plate 52 is It is connected to the inside of both left and right ends in the figure on the lower surface of 53a. Then, when rainwater or the like enters the groove of the light-shielding sheet fixing frame 53, the rainwater or the like collects on both left and right ends of the bottom piece 53a of the light-shielding sheet fixing frame 53. Since the linear portion 52b of the swash plate 52 is located inside the left and right ends of the bottom piece 53a, the rainwater, etc. that has collected on the left and right ends of the bottom piece 53a of the light-shielding sheet fixing frame 53 is removed from the straight line of the swash plate 52. It flows to the outer surface of the portion 52b (the outdoor surface of the greenhouse H). Therefore, rainwater or the like that has entered the groove of the light shielding sheet fixing frame 53 can be prevented from entering the greenhouse H by turning around the inner surface of the bottom piece 53a (indoor side surface of the greenhouse H).

Furthermore, as shown in FIG. 3, the light-shielding sheet fixing frame 53 is arranged higher than the roof-side sheet fixing frame 51 when viewed from the arch pipe P1. Therefore, as shown on the right side of FIG. 3, the light-shielding sheet 2 can be wound up until the winding shaft 3 is positioned above the roof-side sheet fixing frame 51. Therefore, if the light-shielding sheet 2 is wound up until the winding shaft 3 is positioned above the roof-side sheet fixing frame 51, the roof-side sheet S3 can be moved to the roof-side sheet fixing frame without being obstructed by the light-shielding sheet 2. 51 can be re-upholstered. That is, since it is not necessary to remove the light-shielding sheet 2 when reupholstering the roof side sheet S3, the work efficiency of reupholstering the roof side sheet S3 is improved.

In addition, as shown on the right side of FIG. 3, the roll 2A wound into a roll by the winding shaft 3 is placed above the roof-side sheet fixing frame 51 when stored on the top side of the arch pipe P1. Because of this position, at least a portion of the roll 2A of the light-shielding sheet 2 overlaps the support fitting 5 in the vertical direction. Therefore, when the light-shielding sheet 2 is stored, the size of the shadow created inside the greenhouse H by the roll 2A of the light-shielding sheet 2 can be reduced, so that the influence of the shadow of the roll 2A of the light-shielding sheet 2 on the inside of the greenhouse H can be reduced. can be minimized.

However, the support fitting 5 may not include the light-shielding sheet fixing frame 53, and the light-shielding sheet 2 may be fixed at a location different from the support fitting 5.

In addition, as shown in FIG. 3, the width in the height direction from the roof-side sheet fixing frame 51 to the light-shielding sheet fixing frame 53 in the support fitting 5 is set to The radius is set to be equal to or larger than the radius of the roll 2A of the sheet 2. Therefore, even if the roll 2A of the light-shielding sheet 2 stored on the top side of the arch pipe P1 is blown by strong winds, the support fittings 5 act as a barrier and the roll 2A of the light-shielding sheet 2 will not sandwich the top of the arch pipe P1. can reliably prevent it from moving to the opposite side (the left side in FIG. 3).

Further, when the light-shielding sheet 2 is stored on the top side of the arch pipe P1, the roll 2A of the light-shielding sheet 2 connects the roof-side sheet fixing frame 51 and the light-shielding sheet fixing frame 53, as shown in FIG. It comes into contact with the inclined portion 52a of the swash plate 52 to be connected. Therefore, when the light-shielding sheet 2 is unwound from the winding shaft 3 from the state where the light-shielding sheet 2 is stored on the top side of the arch pipe P1, the movement of the winding shaft 3 toward the side of the arch pipe P1 is prevented. Since it is guided by the inclined portion 52a of the swash plate 52, the light shielding sheet 2 can be quickly unfolded.

In addition, in a light shielding device 1A that is a modification of the light shielding device 1 of the embodiment shown in FIG. 3, a support metal fitting 5A shown in FIG. A waterproof sheet S4 that covers the roof-side sheet fixing frame 51 is provided between the roof-side sheet S3 and the roof-side sheet S3. Note that the basic configuration of the light shielding device 1A is the same as that of the light shielding device 1 of the embodiment shown in FIG. Hereinafter, only the parts that are different from the light shielding device 1 of the embodiment shown in FIG. 3 will be explained in detail, and in order to avoid duplication of explanation, common components will be given the same reference numerals and detailed explanation will be omitted.

The support fittings 5A of this modification shown in FIG. 4 are frame-shaped members extending along the depth direction of the greenhouse H, and are disposed on both sides of the arch pipe P1 with the top thereof interposed therebetween, and are jointed to the arch pipe P1. 10, a pair of roof-side sheet fixing frames 51, 51 provided at the upper ends of each of the attachment parts 50A, 50A, and It includes a pair of swash plates 52A, 52A extending upward while being inclined, and a light shielding sheet fixing frame 53A connected to the upper ends of the pair of swash plates 52A, 52A.

As shown in FIG. 4, the waterproof sheet S4 is provided between the light-shielding sheet 2 and the roof-side sheet S3 so as to straddle the light-shielding sheet fixing frame 53A of the support fitting 5A, and the center portion is provided with the light-shielding sheet fixing frame 53A. Each roof sheet is fixed to the roof via the elastic member 16, and the left and right ends are located below the left and right roof-side sheet fixing frames 51 of the support fittings 5A, respectively, when viewed from the depth direction of the greenhouse H. It is fixed to a side sheet fixing frame 51 via an elastic member 17.

Therefore, in the light shielding device 1A of this modification, the roof side sheet fixing frame 51 of the support fitting 5A is covered with the waterproof sheet S4, so that rainwater etc. can be reliably prevented from entering into the opening 51d of the roof side sheet fixing frame 51. It can be prevented. Therefore, there is no fear that rainwater or the like that has entered the opening 51d of the roof-side sheet fixing frame 51 will flow around the inner surface of the roof-side sheet fixing frame 51 and enter the greenhouse H.

Further, in the light shielding device 1A of this modification, the waterproof sheet S4 is installed across the light shielding sheet fixing frame 53A, so the light shielding sheet fixing frame 53A is also covered with the waterproof sheet S4. Therefore, the waterproof sheet S4 can reliably prevent rainwater and the like from entering the grooves of the light shielding sheet fixing frame 53A. Therefore, in the light shielding device 1A of this modification, there is a risk that rainwater etc. that have entered the grooves of the light shielding sheet fixing frame 53A will flow around the inner surface of the light shielding sheet fixing frame 53A and enter the greenhouse H. do not have.

In addition, in the light shielding device 1A of this modified example shown in FIG. 4, the waterproof sheet S4 is fixed at the center to the light shielding sheet fixing frame 53A, and at both left and right sides to the left and right roof side sheet fixing frames 51, 51 in the figure. It is fixed to the support fitting 5A at three locations. In this way, when fixing the waterproof sheet S4 to the support metal fittings 5A at three locations on the center and left and right sides, in the fixing work of the waterproof sheet S4, if the central part of the waterproof sheet S4 is first fixed to the light-shielding sheet fixing frame 53A, Parts of the left and right sides of the waterproof sheet S4 in FIG. 4 bend under their own weight and vertically face the left and right roof-side sheet fixing frames 51. Therefore, if the central part of the waterproof sheet S4 is fixed to the light-shielding sheet fixing frame 53A, the part of the waterproof sheet S4 that vertically faces the roof-side sheet fixing frame 51 can be easily fixed to the roof-side sheet fixing frame 51, thereby making it waterproof. The sheet S4 can be easily fixed to the support fitting 5.

Note that the part of the waterproof sheet S4 that is fixed to the light-shielding sheet fixing frame 53A does not have to be the central part of the waterproof sheet S4, and as long as it covers the roof-side sheet fixing frame 51, the part of the waterproof sheet S4 that is fixed to the light-shielding sheet fixing frame 53A does not have to be the central part of the waterproof sheet S4. The length from the portion fixed to the fixing frame 53A to each end may be different on the left and right sides in FIG.

However, the method of fixing the waterproof sheet S4 is not limited to the above method, and for example, the waterproof sheet S4 may be fixed only to the left and right roof-side sheet fixing frames 51, 51 in FIG. Although the length of the waterproof sheet S4 becomes longer, each end of the waterproof sheet S4 may be fixed to the upper side frame F1, or it may be fixed along the depth direction between the top of the arch pipe P1 and each side. It is also possible to newly provide frame members extending from each other and fix each end of the waterproof sheet S4 to the frame members.

Continuing, each part of the support metal fitting 5A shown in FIG. 4 will be described in detail regarding the portions that differ in shape from the support metal fitting 5. As shown in FIG. 4, the pair of attachment parts 50A of the support fittings 5A extend from the lower end of the bottom piece 51a of the roof-side sheet fixing frame 51 to the width direction of the bottom piece 51a of the roof-side sheet fixing frame 51, respectively, when viewed from the depth direction. a bottom piece 50Ab that extends from the lower end of the inclined piece 50Aa toward the side opposite to the top of the arch pipe P1, slopes along the upper surface of the arch pipe P1, and contacts the upper surface of the arch pipe P1; The first hooking piece 50Ac stands obliquely from the end opposite to the top of the arch pipe P1 of the bottom piece 50Ab toward the top side of the arch pipe P1, and the inner surface of the bottom piece 51a of the roof side sheet fixing frame 51 (from the inside surface of the bottom piece 51a of the roof side sheet fixing frame 51) A second hooking piece 50Ad is provided which stands obliquely downward from the indoor side surface and whose tip is curved toward the side opposite to the top of the arch pipe P1 and comes into contact with the upper surface of the arch pipe P1.

By hooking the joint 10 onto the first hook piece 50Ac and the second hook piece 50Ad, the support fitting 5A can be attached to the arch pipe P1.

Comparing the attachment part 50A of the support fitting 5A of this modification with the attachment part 50 of the support fitting 5 shown in FIG. 3, in the light shielding device 1A shown in FIG. Since rainwater droplets do not flow from the directional end to the inner surface of the support fitting 5A, there is no need to provide a water receptacle having an L-shaped cross section and consisting of the bottom piece 50a and the vertical piece 50b. Therefore, it is sufficient for the attachment portion 50A of this modification to have a portion on which the joint 10 can be hooked. Therefore, in this modification, the mounting portion 50A can be made into a simple shape that only has a portion on which the joint 10 is hooked, and the cross-sectional area of the mounting portion 50A can be reduced, so that the material required for molding the mounting portion 50A can be reduced. can.

Further, as shown in FIG. 4, the pair of swash plates 52A, 52A of the support fitting 5A of this modified example are arranged in a direction in which their tips approach each other from the upper side wall pieces 51b, 51b of each roof-side sheet fixing frame 51, 51. The straight portions 52Ab are provided with inclined portions 52Aa that stand up while being inclined, and straight portions 52Ab that extend vertically while being curved from the tip of each inclined portion 52Aa, and whose upper ends are respectively connected to the lower surface of the bottom piece 53Aa of the light-shielding sheet fixing frame 53A.

Further, as shown in FIG. 4, the light-shielding sheet fixing frame 53A of the support fitting 5A of this modification has a flat plate shape when viewed from the depth direction, and the upper ends of the straight portions 52Ab of the swash plate 52A are on the left and right sides in the figure. It includes a bottom piece 53Aa connected to both ends, and a pair of upright pieces 53Ab, 53Ab that stand up from both left and right ends in the figure of the bottom piece 53Aa and are curved and inclined in a direction in which their tips approach each other. The bottom piece 53Aa and the pair of upright pieces 53Ab, 53Ab form a groove with a narrow opening width into which the elastic member 16 for fixing the waterproof sheet S4 and the elastic member 13 for fixing the light shielding sheet 2 can be fitted.

In this modification, by providing the waterproof sheet S4, rainwater or the like does not enter into the groove of the light shielding sheet fixing frame 53A. Therefore, in this modification, as shown in FIG. 3, the light-shielding sheet fixing frame 53 It is not necessary to curve the bottom piece 53a so as to be upwardly convex or to position the upper end of the straight portion 52b of the swash plate 52 inside the left and right ends of the bottom piece 53a.

Therefore, according to this modification, since the bottom piece 53Aa has a flat plate shape, the height of the light-shielding sheet fixing frame 53A is lower than that of the light-shielding sheet fixing frame 53 shown in FIG. 3, and the amount of material can be reduced. Furthermore, according to this modification, since the shapes of the swash plate 52A and the bottom piece 53Aa of the light-shielding sheet fixing frame 53A can be simplified, the shape of the mold for forming the support fitting 5 is not complicated, and the manufacturing cost can be reduced. It can be reduced.

Furthermore, in this modification, since the upper end of the straight portion 52Ab of the swash plate 52A is connected to both left and right ends in FIG. The change in shape becomes gradual. Therefore, it is difficult for stress to concentrate on the boundary between the inclined portion 52Aa and the straight portion 52Ab of the swash plate 52A, so that the durability of the support fitting 5A is improved.

In addition, in this modification, the upper ends of the straight portions 52Ab of the swash plate 52A are connected to the left and right sides of the bottom piece 53Aa of the light-shielding sheet fixing frame 53A in FIG. The distance between the supporting points supporting the light-shielding sheet fixing frame 53A is longer than when the upper end of the straight portion 52b of the light-shielding sheet fixing frame 53 is connected to the inner side of both left and right ends of the bottom surface of the bottom piece 53a of the light-shielding sheet fixing frame 53. Therefore, the light-shielding sheet fixing frame 53A is stably supported, and wobbling of the light-shielding sheet fixing frame 53A can be suppressed.

In addition, as shown in FIG. 4, the support fitting 5A of this modification includes a pair of projecting pieces 54A that extend horizontally from the inner boundary between the inclined piece 50Aa and the straight portion 52Ab of each swash plate 52A, with their tips facing each other. , 54A. A gap is formed between these protruding pieces 54, 54 and the bottom piece 53Aa, into which a rectangular plate-shaped connecting plate J that connects the divided bodies of the support fitting 5A described above is inserted.

In addition, in the light shielding device 1A of this modification, the support metal fitting 5 of the light shielding device 1 is replaced with the support metal fitting 5A, but also in the light shielding device 1A of this modification, the support metal fitting 5 of the embodiment shown in FIG. May be used.

Further, in this embodiment, as shown in FIGS. 1 and 2, a band 4 is spanned between the sides of the greenhouse H above the light shielding sheet 2 along the longitudinal direction of the arch pipe P1. .

In this way, since the band 4 is arranged above the light-shielding sheet 2, even if the light-shielding sheet 2 is blown by the wind, the band 4 presses the light-shielding sheet 2 against the arch pipe P1 side, and the light is shielded. This prevents the sheet 2 from flapping.

In addition, in this embodiment, as shown in FIG. 1, the bands 4 are installed at three locations along the depth direction of the greenhouse H at predetermined intervals. The interval is not particularly limited, and may be appropriately determined depending on the length of the greenhouse H in the depth direction and the climate conditions such as the wind strength of the area where the greenhouse H is installed.

In detail, as shown in FIGS. 1 and 2, the band 4 of this embodiment has a wide band shape with elasticity, and extends over the top of the arch pipe P1, with each end touching the side surface of the greenhouse H. It is fixed to the upper side frame F1 provided on each side part, and the central part facing the top of the arch pipe P1 is arched by the light-shielding sheet fixing frame 53 as a support part of the support fitting 5. It is supported at a position spaced apart from the top of the pipe P1.

Here, the upper side frame F1 is a frame material having two grooves F1a and F1b arranged vertically, as shown in FIG. Although the upper end of the side sheet S1 is actually fixed to the lower groove F1b via an elastic member, the side sheet S1 is omitted in FIG. 5 to make the explanation easier to understand.

As shown in FIG. 5, each end of the band 4 is connected to the outdoor side separated from the side of the greenhouse H by a second support fitting 7 attached to the upper groove F1a of the upper side frame F1. While being supported in position, it is fixed to the lower groove F1b via an elastic member 15 made of a corrugated metal spring.

Further, the second support fitting 7 is fixed to the upper frame F1 located below the lower end of the light-shielding sheet 2 in the state (unfolded state) that is unrolled to the maximum extent by the winding shaft 3 on the side of the greenhouse H. Therefore, the winding shaft 3 does not interfere with the second support fitting 7 when the light shielding device 1 is fed out.

Specifically, as shown in FIG. 6, the second support fitting 7 of this embodiment is formed by bending a metal wire, and has a substantially U-shape with a width slightly wider than the band 4 at the center. A second support part 70 having a wide recess 70a, and a pair of fixing parts 71, 71 that are provided at each end of the second support part 70 and can be fixed in the upper groove F1a of the upper side frame F1. Be prepared.

As shown in FIG. 6, the fixing part 71 is formed in the shape of a wave spring, and when inserted into the upper groove F1a of the upper side frame F1, it exerts a resilient force and tightens the upper side frame. It is fixed in the upper groove F1a of F1.

Therefore, as shown in FIG. 5, by fixing the pair of fixing parts 71, 71 to the upper groove F1a of the upper side frame F1, the second support fitting 7 fixes the supporting part 72 to the upper groove F1a. It is attached to the upper side frame F1 while protruding from the opening.

Next, a method for attaching the band 4 will be explained. First, the band 4 is stretched along the longitudinal direction of the arch pipe P1 across the support metal fitting 5 which is installed at the top of the arch pipe P1 and to which the roof side sheet S3 and the light shielding sheet 2 are fixed. Next, one end of the band 4 is housed in the recess 70a of the second support part 70 of the second support fitting 7 attached to the groove F1a on the upper side of the upper side frame F1, and the upper side into the groove F1b on the lower side of the side frame F1. In this state, the elastic member 15 is inserted into the lower groove F1b from above the band 4, and the elastic force of the elastic member 15 fixes one end of the band 4 to the upper side frame F1.

At this time, in this embodiment, the band 4 is accommodated in the recess 70a provided in the second support part 70 of the second support fitting 7, and the end of the band 4 is Since the band 4 can be fixed to the upper side frame F1, the work of attaching the band 4 becomes easy. However, the recess 70a may be omitted in the second support portion 70.

Thereafter, the other end of the band 4 is fixed in the lower groove F1b of the other upper side frame F1 in the same manner as the one end of the band 4, and the band 4 straddles the top of the arch pipe P1 and It spans between side frames F1, F1 provided on the left and right in the depth direction of H.

In this state, as shown in FIG. 3, the center portion of the band 4 is supported by the light-shielding sheet fixing frame 53 of the support fitting 5 at a position spaced upward from the top of the arch pipe P1. Then, near the top of the arch pipe P1, the band 4 is supported by the support fitting 5 and is separated from the arch pipe P1. The force (pressing force) with which the band 4 presses the light shielding sheet 2 toward the arch pipe P1 side becomes smaller. Therefore, when the light-shielding device 1 unfolds or stores the light-shielding sheet 2, the frictional force generated between the band 4 and the light-shielding sheet 2 and the frictional force generated between the light-shielding sheet 2 and the winding shaft 3. can be reduced, so deterioration of the light-shielding sheet 2 can be suppressed. In addition, when the light shielding device 1 unfolds or stores the light shielding sheet 2, the force required to drive the winding shaft 3 can be reduced.

Further, near the top of the arch pipe P1, the diameter of the roll 2A of the light shielding sheet 2 is the largest, so the pressing force of the band 4 becomes particularly large. Therefore, by installing the support fitting 5 at the top of the arch pipe P1 and reducing the pressing force of the band 4 near the top of the arch pipe P1, the frictional force generated between the band 4 and the light-shielding sheet 2 and the light-shielding The effect of reducing the frictional force generated between the sheet 2 and the winding shaft 3 is particularly effective.

Furthermore, since each end of the band 4 is supported by the second support fittings 7 at a position spaced apart from the side of the greenhouse H toward the outdoors, compared to the case where the second support fittings 7 are not provided, The pressing force of the band 4 is also reduced near the side of the arch pipe P1. Therefore, when the light shielding device 1 unfolds or stores the light shielding sheet 2, it is possible to further reduce the frictional force generated between the light shielding sheet 2 and the winding shaft 3, so that deterioration of the light shielding sheet 2 can be suppressed. . In addition, when the light shielding device 1 unfolds or stores the light shielding sheet 2, the force required to drive the winding shaft 3 can be reduced.

Further, in the light shielding device 1 of the present embodiment, instead of the second support fitting 7, a second support fitting 700 as shown in FIG. 7 may be attached to the upper side frame F1. As shown in FIGS. 7, 8, and 9A, the second support fitting 700 of the modified example is formed by bending a metal wire, and is formed by forming a groove F1a on the upper side of the upper side frame F1. A pair of fixing parts 710, 710 fixed to the plastic greenhouse H, a pair of standing parts 720, 720 having elasticity and standing up from opposite ends of each fixing part 710 toward the outdoor side of the greenhouse H; A supporting part 730 is provided which connects the tips of the parts 720 and has a recessed part 730a in the center that is slightly wider than the width of the band 4, and supports one end of the band 4 in the recessed part 730a.

As shown in FIG. 7, each standing portion 720 includes a straight piece 720a that stands straight up from the end of the fixing portion 710, and an inclined piece 720b that extends obliquely from the tip of the straight piece 720a.

Then, as shown in FIGS. 8 and 9A, when the pair of fixing parts 710 are fixed in the grooves F1a of the upper side frame F1 with the tips of the inclined pieces 720b facing upward, the pair of straight pieces 720a, 720a extend from the end of each fixing part 710 toward the outdoor side of the greenhouse H, and are arranged side by side along the depth direction of the greenhouse H, and the pair of inclined pieces 720b, 720b are connected to each straight piece 720a. slopes from the tip toward the top of the greenhouse H.

Therefore, since the support part 730 that supports the band 4 is supported by the pair of upright parts 720, the support metal fitting 700 is stabilized and the support metal fitting 700 can be prevented from wobbling.

In addition, since a support part 730 that supports the end of the band 4 is provided at the tip of the upright part 720, a pressing force that is a force of the band 4 to push the upright part 720 toward the greenhouse H side is applied. However, as shown in FIG. 9(A), the straight piece 720a is arranged along the normal L of the arch pipe P1 passing through the base end of the upright part 720 (the base end of the straight piece 720a), and the band 4 is located closer to the top of the greenhouse H than the normal line L. The support portion 730 is pressed toward the arch pipe P1 under the tension of the band 4, but since the line of action of the pressing force that the support portion 730 receives from the band 4 is shifted from the axial direction of the straight piece 720a, the tension of the band 4 is Due to the pressing force, a moment is applied to tilt the greenhouse H toward the top side using the base end, which is the connection part with the fixing part 710, as a fulcrum.

Here, in the present embodiment, the band 4 is supported by the support metal fitting 5 and the second support metal fitting 700 at a position spaced apart from the arch pipe P1, and is disposed between the support metal fitting 5 and the second support metal fitting 700. The roll 2A of the light-shielding sheet 2 pushes the light-shielding sheet 2 toward the outdoors. Therefore, as the diameter of the roll 2A of the light-shielding sheet 2 increases, the band 4 is pushed by the roll 2A in a direction away from the roof surface of the greenhouse H, and the pressing force of the band 4 increases due to the reaction force. On the other hand, when the diameter of the roll 2A of the light-shielding sheet 2 becomes smaller, the pressing force of the band 4 becomes smaller.

Therefore, when the light shielding device 1 winds up the light shielding sheet 2 to near the top of the arch pipe P1 and the diameter of the roll 2A of the light shielding sheet 2 increases, and the pressing force of the band 4 exceeds a certain level, the upright portion 720, as shown in FIG. 9(B), is elastically deformed so as to fall down toward the top side of the arch pipe P1 using the base end, which is the connection part with the fixing part 710, as a fulcrum.

Then, the support part 730 that supports one end of the band 4 approaches the support part (light-shielding sheet fixing frame 53) of the support fitting 5 that supports the center part of the band 4, and the band 4 loosens by that amount. 4, the pressing force becomes smaller.

Therefore, according to the second support fitting 700 configured in this way, when the diameter of the roll 2A of the light-shielding sheet 2 becomes large and the pressing force of the band 4 becomes particularly large, the upright portion 720 moves against the arch pipe P1. Since the pressing force of the band 4 can be reduced by elastically deforming so as to fall down toward the top side, the frictional force generated between the band 4 and the light-shielding sheet 2 and between the light-shielding sheet 2 and the winding shaft 3 can be reduced. can effectively reduce the frictional force generated in

Further, the timing at which the second support fitting 700 is elastically deformed can be adjusted as appropriate by changing the diameter of the wire rod and the length of the upright portion 720.

Note that the shape of the second support fitting 700 of this modification is not particularly limited as long as the tip of the upright part 720 is located above the normal L of the arch pipe P1 passing through the base end of the upright part 720, for example. The upright portion 720 may have a shape that is arched upward from the fixing portion 710 or a shape that extends diagonally upward from the fixing portion 710.

The shape of the second support fittings 7, 700 described above is just an example, and is not limited to the shape described above as long as it can support the end of the band 4 at a position spaced apart from the arch pipe P1. Furthermore, the method of attaching the second support fitting 7 to the greenhouse H is not limited to the above-mentioned method, and for example, it may be directly connected to the arch pipe P1. Furthermore, the second support fittings 7, 700 may be omitted.

Note that the method of attaching the end of the band 4 to the side of the arch pipe P1 is not limited to the method described above, and the band 4 may be attached to a location other than the side frame F1.

In addition, in this embodiment, one band 4 is spanned from one side of the arch pipe P1 to the other side, but the band 4 spans from one side of the arch pipe P1 to the top of the arch pipe P1. You may make it span the band 4 one by one from the other side to the top. In this case, the upper end of the band 4 may be fixed to the light-shielding sheet fixing frame 53 of the support fitting 5. In addition, the band 4 is made into one sheet-like sheet, for example, a net-like sheet, and each end of the band 4 is attached to each side frame F1, F1 so that the band 4 covers the entire roof surface of the greenhouse H. You may also do so.

In addition, in this embodiment, as shown in FIG. 1, three arch pipes P1 arranged at predetermined intervals among the plurality of arch pipes P1 are inspected from above the roof side sheet S3. A protective member 9 made of rubber is attached from the top to each side.

Then, when the light-shielding sheet 2 is unfolded or stored in the light-shielding device 1, the winding shaft 3 rolls on the arch pipe P1 via the protection member 9, so that the light-shielding sheet 2 wound around the winding shaft 3 It is possible to suppress deterioration caused by rubbing against the arch pipe P1 and the roof-side sheet S3.

Furthermore, since the heights of the arch pipe P1 to which the protection member 9 is attached and the arch pipe P1 to which the protection member 9 is not attached are different, the winding shaft 3 is placed above the arch pipe P1 to which the protection member 9 is attached. However, in the present embodiment, a protection member 9 is attached to each of the three arch pipes P1 that support each end and the vicinity of the center of the winding shaft 3. Therefore, the winding shaft 3 is supported in a well-balanced manner at three locations: the axial center and a portion approximately equidistant from the axial center, so there is no risk of the winding shaft 3 tilting.

Note that when the plurality of protection members 9 are attached to the arch pipe P1 so as to be arranged at equal intervals in the height direction of the winding shaft 3 and as far away from each other as possible, the inclination of the winding shaft 3 is suppressed. can.

Further, when the winding shaft 3 rolls on the arch pipe P1 without passing through the protective member 9, if the light-shielding sheet 2 or the roof-side sheet S3 is wet with rain, the light-shielding sheet 2 rolls over the roof-side sheet S3. It may get stuck in close contact with the In that case, the force required to drive the winding shaft 3 when winding up the light-shielding sheet 2 becomes large.

On the other hand, when the protective member 9 is provided between the roof-side sheet S3 and the light-shielding sheet 2 as in this embodiment, a gap is created between the roof-side sheet S3 and the light-shielding sheet 2. . Therefore, even if the roof-side sheet S3 is wet from rain, the light-shielding sheet 2 will not stick to the roof-side sheet S3. This can prevent the force required to drive the motor from increasing.

Hereinafter, the specific shape of the protection member 9 of this embodiment will be explained. As shown in FIG. 10(A), the protective member 9 of this embodiment has a convex portion 9a having an arcuate cross section that convexes upward in the figure, and a convex portion 9a that extends downwardly and outwardly from each end of the convex portion 9a. It includes a pair of inclined positioning parts 9b, 9b, and a pair of protrusions 9c, 9c extending laterally outward from the tip of each positioning part 9b.

Then, as shown in FIG. 10(A), when the arch pipe P1 is fitted between the pair of positioning parts 9b, 9b and the protective member 9 is placed over the arch pipe P1 from above the roof sheet S3, when viewed from the longitudinal direction. A gap is formed at the center in the transverse direction between the roof sheet S3 and the convex portion 9a that swells toward the opposite side of the arch pipe.

In this state, screws V are screwed into the arch pipe P1 at predetermined intervals along the longitudinal direction of the arch pipe P1, as shown in FIG. Since the member 9 is connected to the arch pipe P1, it is possible to prevent the protective member 9 from shifting from the arch pipe P1.

At this time, the head Va of the screw V deforms the convex part 9a so as to crush the gap formed between the convex part 9a and the roof sheet S3, as shown in FIG. 10(B). It is embedded in the convex portion 9a and becomes hidden. Therefore, there is no fear that the light-shielding sheet 2 will be damaged by the head Va of the screw V.

Moreover, since the protective member 9 of this embodiment is made of rubber, it comes into close contact with both the head Va of the screw V and the roof side sheet S3, so that the protective member 9 can be attached to the arch pipe P1 using the screw V. Even if they are connected, rainwater can be prevented from entering into the greenhouse H.

In addition, as in the modification shown in FIG. 11, the protection member 90 is made of rubber, and includes a bottom portion 91 extending along the upper surface of the arch pipe P1, and a left end in the figure that is one end of the bottom portion 91 in the width direction. The cover part 92 may be provided with a cover part 92 that stands up from the bottom part 91 and covers the bottom part 91 with a predetermined distance therebetween.

Specifically, as shown in FIG. 11, the bottom portion 91 includes a flat plate piece 91a having a flat plate shape in cross section, and a pair of positioning pieces 91b, 91b that are inclined downwardly and outwardly from each end of the flat plate piece 91a. have The cover portion 92 also includes an upright piece 92a that stands up while tilting inward from a positioning piece 91b on the left side in FIG. 11, and a right end of the flat plate piece 91a in FIG. and a flat cover piece 92b extending to vertically opposing positions.

As shown in FIG. 11, with the arch pipe P1 fitted between the pair of positioning pieces 91b, 91b and the protective member 90 placed over the arch pipe P1, the protective member 90 is inserted through the flat plate piece 91a of the bottom part 91 to form an arch. When the screw V1 is screwed into the pipe P1, the protection member 90 is connected to the arch pipe P1, so that the protection member 90 can be prevented from shifting from the arch pipe P1.

At this time, the head V1a of the screw V1 is covered by the cover portion 92 as shown in FIG. 11, so there is no fear that the light shielding sheet 2 will be damaged by the head V1a of the screw V1.

Further, since the distance between the bottom portion 91 and the cover portion 92 is set to be greater than or equal to the height of the head V1a of the screw V1, the cover portion 92 is pushed up by the head V1a of the screw V1, and the cover portion of the protective member 90 is The winding shaft 3 rolling on the winding shaft 92 can be prevented from tilting.

Furthermore, since any screw V1 having a head V1a with a height within the range of the distance between the flat plate piece 91a of the bottom part 91 and the cover piece 92b of the cover part 92 can be used, the degree of freedom in selecting the screw V1 is improved. .

Furthermore, since the protection member 90 of this embodiment is made of rubber, it comes into close contact with both the head V1a of the screw V1 and the roof side sheet S3, so the protection member 90 is attached to the arch pipe P1 using the screw V1. Even if they are connected, rainwater can be prevented from entering the greenhouse H.

Furthermore, the protection member 90 of this embodiment includes a first stopper 93 that stands inward from the right end of the positioning piece 91b on the right side in FIG. 11, and a first stopper 93 that slopes downward and outward from the right end in FIG. A second stopper 94 is provided whose tip faces the first stopper 93, and the load of the winding shaft 3 acts on the cover piece 92b, causing the cover portion 92 to deform starting from the base end of the upright piece 92a. In this case, the second stopper 94 comes into contact with the first stopper 93 to suppress further deformation of the upright piece 92a. Therefore, the inclination of the winding shaft 3 rolling on the arch pipe P1 via the protection member 90 can be minimized.

Although not shown, in this embodiment, the upper ends of the protective members 9, 90 are fixed to the roof-side sheet fixing frame 51 of the support fitting 5, and the lower ends of the protective members 9, 90 are fixed to the upper side-side frame F1. However, it may be fixed to the arch pipe P1 using only the screws V and V1.

Further, the shape of the protection members 9, 90 described above is an example, and is not limited to the above-mentioned shape. good. Note that in the light shielding device 1 of this embodiment, the protection members 9 and 90 may be omitted.

Next, the drive device 6 that drives the winding shaft 3 will be explained in detail. In this embodiment, a drive device 6 is provided for each winding shaft 3 attached to each end of the light shielding sheet 2. As shown in FIG. 1, the drive device 6 of this embodiment includes a motor 60 installed on the ground G of a greenhouse H, and a motor 60 that transmits the power of the motor 60 to a winding shaft 3 to wind the light shielding sheet 2. A transmission mechanism for winding onto the take-up shaft 3 or unwinding from the take-up shaft 3 is provided.

The transmission mechanism of this embodiment includes a telescoping rod 61 whose one end is connected to the output shaft of a motor 60 and is rotatable in the circumferential direction and extendable and retractable in the axial direction, and the other end of the telescoping rod 61 and the winding shaft 3 It has a conversion mechanism 62 that is provided between one end of the telescopic rod 61 and converts the circumferential rotational movement of the telescopic rod 61 into rotational movement of the winding shaft 3 and transmits the rotational movement to the winding shaft 3.

Further, as shown in FIGS. 1 and 12, the motor 60 of this embodiment is connected to the ground G on the gable side of the greenhouse H through the holder 8, with the depth direction of the greenhouse H as an axis. It is mounted so that it can rotate around its axis. At this time, as shown in FIG. 1, the motor 60 is installed at a position on the ground G that does not face the entrance and exit of the greenhouse H in the depth direction, so that the motor 60 does not obstruct passage through the entrance and exit of the greenhouse H. It has become.

As shown in FIG. 12, the holder 8 includes a rectangular flat plate-shaped fixing piece 80 that is fixed to the ground G with a peg or the like (not shown) so that its longitudinal direction is along the depth direction of the greenhouse H; It is provided with a pair of support pieces 81, 81 standing vertically from each end on the longitudinal side, and a rotating shaft 82 spanning between the support pieces 81, 81 and extending along the depth direction of the greenhouse H.

Although not described in detail, the motor 60 is configured integrally with a speed reducer having an output shaft that reduces and outputs the rotational speed of the motor 60. Moreover, the motor 60 of this embodiment is rotatably held by the rotation shaft 82 of the holder 8 along the depth direction of the greenhouse H.

Note that the method of fixing the holder 8 to the ground G is not limited to pegs, and for example, one support piece 81 facing the greenhouse H side may be fixed to the support pipe P2. Further, the configuration of the holder 8 is merely an example, and is not limited to the above-described configuration. Moreover, the method of attaching the motor 60 to the ground G is not particularly limited as long as the motor 60 can be attached rotatably about the depth direction of the greenhouse H as an axis.

Next, as shown in FIGS. 1 and 13, the telescoping rod 61 of this embodiment is inserted into a cylindrical outer cylinder 63 so as to be movable in the axial direction, and the output of the motor 60. It includes a cylindrical inner tube 64 connected to the shaft, and is configured to be expandable and retractable in the axial direction.

Furthermore, the telescopic rod 61 is equipped with a rotation prevention mechanism that prevents the inner cylinder 64 from rotating relative to the outer cylinder 63, and when the motor 60 is driven, the inner cylinder 64 connected to the output shaft of the motor 60 only rotates. Rather, the outer cylinder 63 also rotates in the circumferential direction. Therefore, the telescoping rod 61 also functions as a transmission shaft that transmits the drive of the motor 60. Note that in this embodiment, the inner cylinder 64 is connected to the output shaft of the motor 60, but the outer cylinder 63 may be connected to the output shaft of the motor 60.

Specifically, as shown in FIG. 13, the anti-rotation mechanism of this embodiment has four recesses 63b provided along the axial direction on the inner circumference of the outer cylinder 63, and a rotatable mechanism on the outer circumference of the inner cylinder 64. The four rollers 64a are provided in the recesses 63b and accommodated in the respective recesses 63b, and are capable of running on the inner surfaces of the recesses 63b. When the motor 60 is driven and the inner cylinder 64 attempts to rotate, the roller 64a comes into contact with the inner surface of the recess 63b and the rotation of the inner cylinder 64 relative to the outer cylinder 63 is restricted. both rotate in the circumferential direction.

Specifically, as shown in FIG. 13, on the inner periphery of the outer cylinder 63, four convex portions 63a extending along the axial direction are provided at equal intervals in the circumferential direction. A rectangular recess 63b is formed between the portions 63a, 63a, respectively, when viewed from the axial direction. Note that the diameter of the circle passing through the tip of each convex portion 63a is set to be larger than the outer diameter of the inner tube 64, so when the telescopic rod 61 expands and contracts, the convex portion 63a touches the outer periphery of the inner tube 64. Interference can be avoided.

Moreover, a long groove 63c formed along the axial direction is provided at the tip of each convex portion 63a. This long groove 63c discharges water that has entered between the outer cylinder 63 and the inner cylinder 64 when the telescoping rod 61 expands and contracts, and also functions as a cutout for reducing the weight of the telescoping rod 61. However, the long groove 63c may be omitted.

Further, as shown in FIG. 13, the four rollers 64a provided on the outer periphery of the inner cylinder 64 are connected to two shafts (see FIG. (not shown) are rotatably attached to each end.

Further, the diameter of each roller 64a is slightly shorter than the width of the recess 63b. Therefore, when the telescopic rod 61 expands and contracts with each roller 64a housed in the recess 63b provided on the inner periphery of the outer cylinder 63, each roller 64a moves over the side surface of the protrusion 63a forming the inner surface of the recess 63b. Can run.

Therefore, the anti-rotation mechanism of this embodiment not only prevents the inner cylinder 64 from rotating relative to the outer cylinder 63, but also allows the expansion and contraction movement of the telescoping rod 61 to be guided by the roller 64a and the recess 63b.

Further, in this embodiment, when four rollers 64a provided at the same location in the axial direction on the outer circumference of the inner cylinder 64 are defined as one roller group A, this roller group A is A plurality of them are provided at predetermined intervals in the axial direction. Therefore, the telescopic rod 61 can expand and contract more stably than when the number of roller group A is one. However, the number of roller group A may be one. Furthermore, the number of rollers 64a in roller group A is not limited to four, and it is sufficient that at least one recess 63b and one roller 64a are provided.

Further, the configuration of the rotation prevention mechanism for the telescopic rod 61 described above is only one example, and is not particularly limited as long as it is possible to prevent the inner cylinder 64 from rotating with respect to the outer cylinder 63. For example, the inner cylinder 64 and the outer cylinder 63 may each be formed into a shape other than circular and fit into each other to prevent the inner cylinder 64 from rotating relative to the outer cylinder 63.

Further, as shown in FIG. 14, for example, the conversion mechanism 62 of the present embodiment has a first bevel gear 62a connected to an outer cylinder 63, which is the other end of the telescopic rod 61, and having a first bevel gear 62a formed at an angle of 45 degrees at the tip. The second shaft 62d extends in the horizontal direction and has a second bevel gear 62c at an angle of 45 degrees that meshes with the first bevel gear 62a on its outer periphery.The second shaft 62d is connected to the winding shaft 3. This converts the rotational movement of the telescopic rod 61 into the rotational movement of the winding shaft 3. Note that the configuration of the conversion mechanism 62 described above is an example, and the structure of the conversion mechanism 62 is not particularly limited as long as the rotational movement in the circumferential direction of the telescopic rod 61 can be converted into the rotational movement of the take-up shaft 3. For example, , a worm screw mechanism may be adopted.

Next, the operation of the light shielding device 1 of this embodiment will be explained in detail. First, when unfolding the light shielding sheet 2 stored on the top side of the arch pipe P1, the motor 60 is rotationally driven in the forward direction, and the telescopic rod 61 connected to the output shaft of the motor 60 is rotated in the forward direction. . Then, the rotational movement of the telescopic rod 61 is converted into the rotational movement of the winding shaft 3 by the conversion mechanism 62, so that the winding shaft 3 rolls toward the side of the arch pipe P1.

As described above, the motor 60 is attached to the ground G via the holder 8 so as to be rotatable around the depth direction of the greenhouse H. When the shaft 3 rolls toward the side of the arch pipe P1, the motor 60 rotates around the depth direction of the greenhouse H in accordance with the movement of the winding shaft 3, and the motor 60 and the winding shaft 3 As the distance becomes shorter, the telescopic rod 61 contracts (see the left side in FIG. 2 and the right side in FIG. 15).

On the other hand, when storing the expanded light shielding sheet 2 to the top side of the arch pipe P1, the motor 60 is rotated in the opposite direction, and the telescopic rod 61 connected to the output shaft of the motor 60 is rotated in the opposite direction. . Then, the rotational movement of the telescopic rod 61 is converted into a rotational movement of the winding shaft 3 by the conversion mechanism 62, and the winding shaft 3 rolls toward the top side of the arch pipe P1.

When the winding shaft 3 on the side of the arch pipe P1 rolls toward the top of the arch pipe P1, the motor 60 rotates around the depth direction of the arch pipe P1 in accordance with the movement of the winding shaft 3. While rotating, the telescopic rod 61 extends as the distance between the motor 60 and the winding shaft 3 increases (see the right side in FIG. 2 and the left side in FIG. 15).

As described above, in this embodiment, the telescopic rod 61 to which the winding shaft 3 is connected via the conversion mechanism 62 expands and contracts while rotating around the motor 60 in accordance with the rolling of the winding shaft 3. , the telescopic rod 61 can guide the rolling of the winding shaft 3.

Therefore, according to the light shielding device 1 of the present embodiment, the rolling of the winding shaft 3 is guided by the telescopic rod 61 to prevent the winding shaft 3 from meandering in the depth direction of the greenhouse H. The light shielding sheet 2 can be unfolded or stored.

Further, the winding speed of the light shielding sheet 2 when the light shielding sheet 2 is stored in the light shielding device 1 of this embodiment is determined by the rotational speed and torque characteristics of the motor 60. When increasing the output torque of the motor 60 in order to increase the picking speed, the motor 60 tends to become larger.

Here, when the motor is directly attached to the end of the winding shaft as in the light shielding device of Patent Document 1, the motor bears the force for moving itself upward together with the winding shaft. In this case, if the motor is made larger in order to increase its output torque, the weight of the motor increases. The increase in the weight of the motor works to improve the sheet feeding speed when the sheet is unfolded, but it also works to reduce the sheet winding speed when the sheet is stored.

Furthermore, if the motor is connected directly to the end of the take-up shaft, if the weight of the motor increases, the sheet attached to the take-up shaft will be pulled and stretched by that amount, and there is a risk of deterioration. There is a limit to the size of the

As described above, in conventional sheet winding devices, increasing the size of the motor does not improve the sheet winding speed and causes sheet deterioration, so we installed the motor at the end of the winding shaft. In the case of directly connected light shielding devices, it has been difficult to increase both the sheet unwinding speed and the winding speed.

In contrast, in the light shielding device 1 of the present embodiment, the motor 60 is installed on the ground G, so the load of the motor 60 does not act on the winding shaft 3. Therefore, according to the light shielding device 1 of the present embodiment, even if the motor 60 is enlarged to increase the output torque of the motor 60 and the weight of the motor 60 increases, the increase in the weight of the motor 60 will be reduced by the light shielding sheet. The winding speed of the light-shielding sheet 2 during storage of the light-shielding sheet 2 is not reduced. Furthermore, since the load of the motor 60 does not act on the winding shaft 3, the light shielding sheet 2 is not pulled by the load of the motor 60.

Therefore, according to the light shielding device 1 of the present embodiment, the output torque of the motor 60 can be increased without worrying about the weight increase due to the enlargement of the motor 60, so that the feeding speed and winding speed of the light shielding sheet 2 can be increased. can improve both.

If both the feeding speed and the winding speed of the shading sheet 2 can be improved in this way, for example, when the sunlight suddenly becomes strong, the shading sheet 2 can be quickly unfolded, thereby preventing the leaves of plants from getting burnt. It is possible to prevent this and suppress the temperature rise inside the greenhouse H.

In addition, in the light shielding device 1 of this embodiment, the motor 60 is installed on the ground G, but as shown in FIG. 16, the motor 60 may be installed on the gable side of the greenhouse H. Even in this case, the load of the motor 60 does not act on the winding shaft 3, so the motor 60 is enlarged to increase the output torque, and both the feeding speed and winding speed of the light-shielding sheet 2 are improved. can be done.

In this way, when the motor 60 is installed on the gable side of the greenhouse H, the distance between the motor 60 and the take-up shaft 3 becomes shorter than when the motor 60 is installed on the ground G, so the axis of the telescopic rod 61 Directional length can be shortened. Therefore, the weight of the telescopic rod 61 can be reduced, so that the winding speed of the light-shielding sheet 2 can be improved. Further, since the telescopic rod 61 is short and lightweight, the telescopic rod 61 can be easily transported. Furthermore, if the motor 60 is installed on the gable side of the greenhouse H, there is no fear that the installation position of the motor 60 will shift even if the ground G becomes muddy due to rain.

The method of installing the motor 60 on the gable side of the greenhouse H is not particularly limited as long as the motor 60 is rotatably attached around the depth direction of the greenhouse H. In this embodiment, the holder 8 described above is fixed to the support pipe P2, and the motor 60 is attached to the gable side of the greenhouse H via the holder 8.

However, the configuration of the drive device 6 described above is an example, and the configuration of the drive device 6 is not particularly limited as long as it can drive the winding shaft 3. The motor 60 may be directly attached to the end of the winding shaft 3. Good too.

As described above, the support fitting 5 of this embodiment includes a plurality of arch pipes P1 arranged side by side in the depth direction, a light shielding sheet 2 as a first sheet that covers the arch pipe P1 from the top to the side, A winding shaft 3 that is attached to the lower end of the light-shielding sheet 2 along the depth direction of the arch pipe P1 and rolls on the arch pipe P1 to wind up and unwind the light-shielding sheet 2; It is installed in a vinyl house H as a simple structure and supports the band 4. A light-shielding sheet fixing frame 53 is provided as a support portion that supports the band 4 at a position spaced upward from the top of the arch pipe P1.

When the support fitting 5 configured in this manner is attached to the top of the arch pipe P1 in the greenhouse H, the band 4 can be separated from the arch pipe P1. Then, the force of the band 4 that presses the light shielding sheet 2 toward the arch pipe P1 side becomes smaller. Therefore, the frictional force generated between the band 4 and the light-shielding sheet 2 and the frictional force generated between the winding shaft 3 and the light-shielding sheet 2 can be reduced, so that the winding shaft 3 can be prevented from rolling on the arch pipe P1. When the light-shielding sheet 2 is wound up or fed out, deterioration of the light-shielding sheet 2 can be suppressed. In addition, when the winding shaft 3 winds up or unwinds the light shielding sheet 2, the force required to drive the winding shaft 3 can be reduced.

Further, especially near the top of the arch pipe P1, the diameter of the roll 2A of the light shielding sheet 2 is the largest, so the force with which the band 4 presses the light shielding sheet 2 toward the arch pipe P1 side also becomes particularly large. Therefore, as in the present embodiment, by installing the support fitting 5 at the top of the arch pipe P1 and reducing the pressing force of the band 4 near the top of the arch pipe P1, the band 4 and the light-shielding sheet 2 can be separated. The effect of reducing the frictional force generated between the light-shielding sheet 2 and the winding shaft 3 is particularly effective.

In addition, in the support fitting 5 of the present embodiment, the light-shielding sheet fixing frame 53 is located at the farthest position from the top of the arch pipe P1, so the light-shielding sheet fixing frame 53 is used as a support portion that supports the band 4. , a support section may be provided separately from the light shielding sheet fixing frame 53.

In this embodiment, the support fitting 5 is used in the light shielding device 1 in which the light shielding sheet 2 is the first sheet that covers the arch pipe P1 from the top to the side. The sheet is a roof-side sheet S3, a winding shaft 3 for winding and unwinding the roof-side sheet S3 is attached to the lower end of the roof-side sheet S3, and by driving the winding shaft 3, the roof surface of the greenhouse H is It may also be used in ventilation equipment that opens and closes. Even in this case, the band 4 that can press the roof-side sheet S3 to the arch pipe P1 side can be separated from the arch pipe P1, so the same effect as in the case where the first sheet is the light-shielding sheet 2 can be performed. , it is possible to suppress deterioration of the roof-side sheet S3 and to reduce the force required to drive the take-up shaft 3.

In addition, in this embodiment, the shoulder part that is the boundary between the standing part P1a and the arch part P1b of the arch pipe P1 is the side part of the arch pipe P1, but the side part of the arch pipe P1 is It is sufficient that the portions are apart in the width direction, and portions other than the shoulder portions of the arch pipe P1 may be used as side portions of the arch pipe P1. For example, when the middle of the arch part P1b of the arch pipe P1 is used as the side part of the arch pipe P1, the first sheet may cover the part from the top of the arch pipe P1 to the middle of the arch part P1b.

Further, the support fittings 5 of this embodiment are arranged along the depth direction of the greenhouse H on both sides of the top of the arch pipe P1, and are divided in the width direction with the top of the arch pipe P1 as a border. A roof-side sheet fixing frame 51 is provided as a pair of second sheet fixing frames capable of fixing the top side edge of the roof-side sheet S3 as a second sheet that is extended toward the arch pipe P1 side from the light-shielding sheet 2. There is.

With the supporting metal fitting 5 configured in this way, since the roof side sheets S3, S3 can be spread out on the arch pipe P1 by dividing them in the width direction with the top of the arch pipe P1 as the border, a part of the roof side sheets S3, S3 can be expanded. If the roof sheet S3 deteriorates or is damaged, it is sufficient to replace only the deteriorated or damaged roof sheet S3. Therefore, compared to the case where the roof surface of the greenhouse H is covered with a single sheet, it is possible to reduce the cost of replacing the roof side sheet S3, such as the effort and material cost.

Note that when the roof surface of the greenhouse H is to be covered with one sheet, the support fitting 5 does not need to include the roof-side sheet fixing frame 51. In this way, when the support metal fitting 5 does not include the roof-side sheet fixing frame 51, the support metal fitting 5 only needs to be provided at the top of the arch pipe P1 facing the band 4 installed in the greenhouse H. , the length of the support fitting 5 in the longitudinal direction may be shortened.

Further, the support fitting 5 of this embodiment holds the light-shielding sheet 2, and also serves as a light-shielding member along the depth direction of the vinyl house H, which is arranged above the roof-side sheet fixing frame 51 when viewed from the arch pipe P1. A sheet fixing frame 53 is provided.

According to this configuration, the light-shielding sheet 2 can be wound up until the winding shaft 3 is positioned above the roof-side sheet fixing frame 51, so there is no need to remove the light-shielding sheet 2 when reupholstering the roof-side sheet S3. , the work efficiency of the re-covering work of the roof side sheet S3 is improved.

Furthermore, in the greenhouse H in which such a support fitting 5 is installed, the roll 2A of the light-shielding sheet 2 stored on the top side of the arch pipe P1 is located above the roof-side sheet fixing frame 51, so that the light-shielding At least a portion of the roll 2A of the sheet 2 overlaps the support fitting 5 in the vertical direction. Therefore, when the light-shielding sheet 2 is stored, the size of the shadow created inside the greenhouse H by the roll 2A of the light-shielding sheet 2 can be reduced, so that the influence of the shadow caused by the roll 2A of the light-shielding sheet 2 on the inside of the greenhouse H can be reduced. can be minimized.

Further, the support fitting 5 of the present embodiment has a width in the height direction from the roof-side sheet fixing frame 51 to the light-shielding sheet fixing frame 53 of the light-shielding sheet 2 that has been wound up to the maximum extent by the winding shaft 3. The radius is greater than the radius of roll 2A.

When the support fitting 5 configured in this way is attached to the top of the arch pipe P1, even if the roll 2A of the light-shielding sheet 2 stored on the top side of the arch pipe P1 is blown by a strong wind, The support fittings 5 act as a barrier to reliably prevent the roll 2A of the light shielding sheet 2 from moving to the opposite side across the top of the arch pipe P1. However, the width in the height direction from the roof-side sheet fixing frame 51 to the light-shielding sheet fixing frame 53 may be less than the radius of the roll 2A of the light-shielding sheet 2. Even in that case, the roll 2A of the light-shielding sheet 2 stored on the top side of the arch pipe P1 is larger than the case where the support fitting 5 is not attached to the top of the arch pipe P1. Movement to the opposite side can be suppressed.

Furthermore, the support fitting 5 of the present embodiment has a pair of attachment parts 50, 50 which are arranged along the depth direction of the arch pipe P1 and on both sides of the arch pipe P1 with the top of the arch pipe P1 in between, and which are fixed to the arch pipe P1. We are prepared.

The support fitting 5 configured in this way is fixed to the arch pipe P1 with the pair of attachment parts 50 sandwiching the top of the arch pipe P1, so that the light shielding sheet 2 and the roof side sheet S3 are blown by the wind. As a result, even if a force is applied to the support fitting 5 to cause it to fall to the left or right when viewed from the depth direction, the support fitting 5 is stably supported by the arch pipe P1 and will not fall. However, the attachment parts 50 do not need to form a pair, and one attachment part 50 may be fixed to the center of the top of the arch pipe P1.

Further, the support fitting 5 of the present embodiment includes a one-side swash plate 52 that connects the light-shielding sheet fixing frame 53 and one roof-side sheet fixing frame 51, and a one-side swash plate 52 that connects the light-shielding sheet fixing frame 53 and the other roof-side sheet fixing frame 51. The other side swash plate 52 connects the fixing frame 51 to the other side swash plate 51. It is slanted to make it wider.

When the support fitting 5 configured in this way is attached to the top of the arch pipe P1, the light shielding sheet 2 is removed from the winding shaft 3 from the state where the light shielding sheet 2 is stored on the top side of the arch pipe P1. When unrolling, the movement of the winding shaft 3 toward the side of the arch pipe P1 is guided by the swash plate 52, so that the light-shielding sheet 2 can be quickly unfolded. However, the shape of the connecting portion that connects the light-shielding sheet fixing frame 53 and each roof-side sheet fixing frame 51 is not particularly limited, and may be formed into an L-shaped cross section, for example.

In addition, in the support fitting 5 of this embodiment, the roof sheet fixing frame 51 has a pair of side wall pieces 51b and 51c that form an opening 51d that allows the roof sheet S3 to be inserted into the inside, and has an arch. The side wall piece 51b on the top side of the pipe P1 is attached to the roof so that the length of the extra length S3a between the top side end of the roof side sheet S3 and the opening 51d of the roof side sheet fixing frame 51 is longer than the width of the opening 51d. With the side sheet S3 fixed to the roof side sheet fixing frame 51, the extra length portion S3a is folded back toward the side of the arch pipe P1 so that the extra length portion S3a covers the opening 51d.

In the support fitting 5 configured in this manner, the opening 51d is covered by the extra length S3a of the roof side sheet S3, so that rainwater etc. can be prevented from entering into the opening 51d. Furthermore, when the light-shielding sheet 2 is stored and unfolded, the winding shaft 3 rolls on the extra length S3a of the roof-side sheet S3, so that the light-shielding sheet 2 wound around the winding shaft 3 is rolled on the roof-side sheet S3. This can prevent the sheet fixing frame 51 from being damaged by the ends of the side wall pieces 51b and 51c.

Further, the light shielding device 1 of the present embodiment includes a winding shaft 3 that can roll on the arch pipe P1 and roll up or unwind the light shielding sheet 2, and a winding shaft 3 that is installed along the longitudinal direction of the arch pipe P1. The arch pipe P1 includes a band 4 that can press down the light shielding sheet 2 from above, and the supporting metal fitting 5 is attached to the top of the arch pipe P1.

In the light shielding device 1 configured in this way, the band 4 is supported at a position spaced apart from the top of the arch pipe P1, and since the band 4 is spaced apart from the arch pipe P1, the light shielding sheet 2 is directed toward the arch pipe P1 side. The force of the band 4 pressing down becomes smaller. Therefore, the frictional force generated between the winding shaft 3 and the light-shielding sheet 2 can be reduced, so when the winding shaft 3 rolls on the arch pipe P1 to wind up or unwind the light-shielding sheet 2, the light-shielding deterioration of the sheet 2 can be suppressed. In addition, when the winding shaft 3 winds up or unwinds the light shielding sheet 2, the force required to drive the winding shaft 3 can be reduced.

Further, especially near the top of the arch pipe P1, the diameter of the roll 2A of the light shielding sheet 2 is the largest, so the force with which the band 4 presses the light shielding sheet 2 toward the arch pipe P1 side also becomes particularly large. Therefore, when the support fitting 5 is installed at the top of the arch pipe P1 as in this embodiment, by reducing the pressing force of the band 4 near the top of the arch pipe P1, the band 4 and the light-shielding sheet The effect of reducing the frictional force generated between the light shielding sheet 2 and the winding shaft 3 and the frictional force generated between the light shielding sheet 2 and the winding shaft 3 is particularly effective.

Moreover, the light shielding device 1 of this embodiment is provided below the lower end of the light shielding sheet 2 in a state (unfolded state) that is unrolled to the maximum extent by the winding shaft 3 on the side of the greenhouse H. A second support fitting 7 is provided to support one end of the greenhouse H at a position spaced from the side of the greenhouse H toward the outdoors.

In the light shielding device 1 configured in this way, one end of the band 4 is supported by the second support metal fitting 7 at a position spaced apart from the side of the greenhouse H, so compared to the case where the second support metal fitting 7 is not provided. Also near the side of the arch pipe P1, the force with which the band 4 presses the light-shielding sheet 2 toward the vinyl house H side is reduced. Therefore, the light shielding device 1 can further reduce the frictional force generated between the light shielding sheet 2 and the winding shaft 3 when the light shielding sheet 2 is unfolded or stored, thereby further suppressing deterioration of the light shielding sheet 2. can. In addition, when the light shielding device 1 unfolds or stores the light shielding sheet 2, the force required to drive the winding shaft 3 can be further reduced.

Further, in the light shielding device 1 of the present embodiment, the second support fitting 700 of the modified example has a fixing part 710 fixed to the side of the vinyl house H, and a fixing part 710 that has elasticity and is attached to the plastic house H from the fixing part 710. It has an upright part 720 that stands up toward the outdoors, and a support part 730 that is provided at the tip of the upright part 720 and supports one end of the band 4, and the tip of the upright part 720 passes through the base end of the upright part 720. It is located above the normal L of the arch pipe P1.

According to this configuration, the support part 730 that is provided at the tip of the upright part 720 and directly supports the band 4 is located closer to the top of the greenhouse H than the normal L of the arch pipe P1 passing through the base end of the upright part 720. positioned. Therefore, the support part 730 receives the tension of the band 4 and is pressed toward the arch pipe P1, but the line of action of the pressing force that the support part 730 receives from the band 4 deviates from the axial direction of the straight piece 720a, so that it cannot stand upright. Due to the pressing force of the band 4, the portion 720 receives a moment of tilting toward the top of the greenhouse H using the base end, which is the connection portion with the fixing portion 710, as a fulcrum.

Therefore, when the diameter of the roll 2A of the light-shielding sheet 2 increases and the pressing force of the band 4 exceeds a certain level when the light-shielding sheet 2 is stored, the upright portion 720 will fall toward the top of the arch pipe P1. The support part 730 that elastically deforms to support one end of the band 4 is the support part (shading sheet fixing frame 53) of the support fitting 5 that supports the center part of the band 4 (the part facing the top of the arch pipe P1). As the band 4 approaches the side, the band 4 loosens by that much, so the pressing force of the band 4 becomes smaller.

Therefore, according to this configuration, when the pressing force of the band 4 becomes particularly large when the light-shielding sheet 2 is stored, the pressing force of the band 4 can be reduced, so that the pressure between the band 4 and the light-shielding sheet 2 is reduced. The frictional force generated and the frictional force generated between the light shielding sheet 2 and the winding shaft 3 can be effectively reduced.

In this embodiment, the second support fittings 7, 700 are formed by bending a metal wire, but may be formed by other methods. Further, in the light shielding device 1 of this embodiment, the second support fittings 7, 700 may be omitted.

Further, the light shielding device 1 of the present embodiment includes protective members 9 and 90 that are attached to the arch pipe P1 at least in a range where the winding shaft 3 can roll and come into contact with the winding shaft 3. 90 is attached to at least two of the plurality of arch pipes P1.

In the light shielding device 1 configured in this way, when the light shielding sheet 2 is unfolded or stored, the winding shaft 3 rolls on the arch pipe P1 via the protection members 9 and 90, so that the winding shaft 3 It is possible to suppress deterioration of the wrapped light shielding sheet 2 due to rubbing against the arch pipe P1 and the roof side sheet S3. Furthermore, if the protective members 9 and 90 are attached to the two arch pipes P1 that support at least the portions of the winding shaft 3 that are approximately equidistant from the center in the axial direction, the winding shaft 3 is tilted by the protective members 9 and 90. can be prevented.

In the light shielding device 1 of the present embodiment, the protection member 9 is made of rubber and has a convex portion in the center in the transverse direction that swells toward the side opposite to the arch pipe and forms a gap with the arch pipe P1. 9a.

In the light shielding device 1 configured as described above, when the screw V is screwed into the arch pipe P1 through the convex portion 9a to connect the protective member 9 to the arch pipe P1, the head Va of the screw V screws into the convex portion 9a. Since the head Va is crushed and deformed, the head Va is buried in the convex portion 9a and becomes hidden. Therefore, there is no fear that the light shielding sheet 2 will be damaged by the head Va of the screw V.

Furthermore, since the protective member 9 is made of rubber, it comes into close contact with both the head Va of the screw V and the roof side sheet S3, so even if the protective member 9 is connected to the arch pipe P1 using the screw V, the vinyl greenhouse Rainwater can be prevented from entering the H.

The protection member 90 of the present embodiment is made of rubber, and is provided between a bottom portion 91 extending along the upper surface of the arch pipe P1 and a bottom portion 91 that stands up from one end of the bottom portion 91 in the transverse direction. and a cover part 92 that covers the bottom part 91 with an interval of , and this interval may be greater than or equal to the height of the head V1a of the screw V1 that penetrates the bottom part 91 and is screwed into the arch pipe P1. .

Also in the protective member 90 configured in this way, when the screw V1 is screwed into the arch pipe P1 through the bottom portion 91 to connect the protective member 9 to the arch pipe P1, the head V1a of the screw V1 is attached to the cover portion. 92, there is no fear that the light shielding sheet 2 will be damaged by the head V1a of the screw V1.

In addition, since the distance between the bottom portion 91 and the cover portion 92 is greater than or equal to the height of the head V1a of the screw V1, the cover portion 92 is pushed up by the head V1a of the screw V1 and runs on the protective member 90. There is no risk that the winding shaft 3 will be tilted. Furthermore, since the screw V1 having the head V1a with a height within the range of the distance between the bottom portion 91 and the cover portion 92 can be used, the degree of freedom in selecting the screw V1 is improved.

Moreover, since the protective member 90 is made of rubber, it comes into close contact with both the head V1a of the screw V1 and the roof side sheet S3, so even if the protective member 90 is connected to the arch pipe P1 using the screw V1, the vinyl Rainwater can be prevented from entering into House H.

Note that the protective members 9 and 90 do not need to be made of rubber, and the material of the protective members 9 and 90 is not particularly limited as long as it does not damage the light shielding sheet 2. Moreover, in the light shielding device 1 of this embodiment, the protection members 9 and 90 may be omitted.

In addition, as in the modification shown in FIG. 4, the light shielding device 1A is supported by a light shielding sheet fixing frame 53A serving as a support part of the support fitting 5A, and has a light shielding sheet 2 (first sheet) and a roof side sheet S3 ( A waterproof sheet S4 may be provided, which is disposed between the roof-side sheet fixing frame 51 (second sheet fixing frame) and covering at least the roof-side sheet fixing frame 51 (second sheet fixing frame).

In the light shielding device 1 configured in this way, the roof-side sheet fixing frame 51 of the support fitting 5A is covered with the waterproof sheet S4, so that rainwater etc. can be reliably prevented from entering into the opening 51d of the roof-side sheet fixing frame 51. It can be prevented. Therefore, there is no fear that rainwater or the like that has entered the opening 51d of the roof-side sheet fixing frame 51 will flow around the inner surface of the roof-side sheet fixing frame 51 and enter the greenhouse H.

In addition, in the present embodiment, the light shielding device 1 as a sheet winding device for the greenhouse H has a drive device 6 that drives the winding shaft 3 driven by a motor 60 installed on the gable side of the greenhouse H or on the ground G. and a transmission mechanism that transmits the power of the motor 60 to the winding shaft 3.

In the light shielding device 1 configured in this manner, the motor 60 is installed on the gable side of the greenhouse H or on the ground G, so the load of the motor 60 does not act on the winding shaft 3. Therefore, according to this shading device 1, even if the motor 60 is enlarged in order to increase the output torque of the motor 60 and the weight of the motor 60 increases, the weight increase of the motor 60 is caused when the shading sheet 2 is stored. There is no reduction in the winding speed of the light shielding sheet 2. Furthermore, since the load of the motor 60 does not act on the winding shaft 3, the light-shielding sheet 2 is not pulled by the load of the motor 60.

Therefore, according to the light shielding device 1 of the present embodiment, the output torque of the motor 60 can be increased without worrying about the weight increase due to the enlargement of the motor 60, so that the feeding speed and winding speed of the light shielding sheet 2 can be increased. can improve both.

Further, in the present embodiment, the sheet wound by the winding shaft 3 is the light-shielding sheet 2, and the sheet winding device is the light-shielding device 1. If the sheet winding device is the shading device 1 in this way, for example, when the sunlight suddenly becomes strong, the shading sheet 2 can be quickly unfolded, which can prevent the leaves of plants from burning and protect the inside of the greenhouse H. Temperature rise can be suppressed.

However, the sheet winding device may be a ventilation device that opens and closes the roof surface of the greenhouse H by driving the winding shaft 3, with the sheet that the winding shaft 3 winds as the roof-side sheet S3. In this way, when the sheet winding device is used as a ventilation device, the roof side sheet S3 can be quickly unfolded when it suddenly starts to rain, so the time for rain to fall into the greenhouse H can be shortened. Furthermore, when the temperature rises rapidly, the temperature rise inside the greenhouse H can be suppressed by quickly storing the roof-side sheet S3 and ventilating it.

In the light shielding device 1 of the present embodiment, the transmission mechanism includes a telescopic rod 61 whose one end is connected to the output shaft of the motor 60 and is rotatable in the circumferential direction and extendable in the axial direction; It has a conversion mechanism 62 that is provided between the other end and one end of the winding shaft 3 and converts the circumferential rotational motion of the telescopic rod 61 into the rotational motion of the winding shaft 3 and transmits the rotational motion to the winding shaft 3. However, the motor 60 is rotatably attached to the gable side of the greenhouse H or the ground G on the gable side of the greenhouse H, with the depth direction of the greenhouse H as an axis.

In the light shielding device 1 configured in this way, when the light shielding sheet 2 is unfolded or stored, the motor 60 rotates around the depth direction of the greenhouse H in accordance with the rolling of the winding shaft 3. The telescopic rod 61 expands and contracts in accordance with changes in the distance between the winding shaft 60 and the winding shaft 3. Therefore, since the rolling motion of the winding shaft 3 is guided by the telescopic rod 61, the winding shaft 3 can be prevented from meandering in the depth direction of the greenhouse H.

However, the configuration of the transmission mechanism described above is an example, and as long as the power of the motor 60 can be transmitted to the take-up shaft 3, the configuration of the transmission mechanism is not particularly limited.

In the light shielding device 1 of the present embodiment, the telescopic rod 61 includes an outer cylinder 63, an inner cylinder 64 that is inserted into the outer cylinder 63 so as to be movable in the axial direction, and an inner cylinder 64 that is attached to the inner circumference of the outer cylinder 63 in the axial direction. It has a recess 63b provided along the outer circumference of the inner cylinder 64, and a roller 64a rotatably provided on the outer periphery of the inner cylinder 64, housed in the recess 63b, and capable of running on the inner surface of the recess 63b.

In the light shielding device 1 configured in this manner, when the telescopic rod 61 expands and contracts when the light shielding sheet 2 is expanded or stored, the inner cylinder 64 and the outer cylinder 63 are prevented from rotating by the rollers 64a and the recesses 63b. The roller 64a runs on the inner surface of the recess 63b.

Therefore, according to this configuration, while the telescoping rod 61 functions as a transmission shaft for transmitting the drive of the motor 60 to the conversion mechanism 62, the telescoping rod 61 can be smoothly extended and contracted, so that the light-shielding sheet 2 can be expanded or retracted. It can be done smoothly.

However, the mechanism for preventing rotation of the outer cylinder 63 and the inner cylinder 64 in the telescoping rod 61 is not limited to the above-mentioned mechanism. By preventing the inner cylinder 64 from rotating relative to the outer cylinder 63, the telescopic rod 61 may function as a transmission shaft that transmits the drive of the motor 60 to the conversion mechanism 62.

Furthermore, in the light shielding device 1 of the present embodiment, when the motor 60 is installed on the ground G on the gable side of the greenhouse H, the motor 60 is installed at a position that does not face the entrance and exit of the greenhouse H in the depth direction. There is. In the light shielding device 1 configured in this manner, the motor 60 installed on the ground G of the greenhouse H does not obstruct passage through the entrance and exit.

Furthermore, when the motor is installed on the gable side of the greenhouse H, the distance between the motor 60 and the take-up shaft 3 is shorter than when the motor 60 is installed on the ground G, so the axial direction of the telescopic rod 61 is The length can be shortened. Therefore, since the weight of the telescopic rod 61 can be reduced, the winding speed of the light-shielding sheet 2 can be improved. Further, since the telescopic rod 61 is short and lightweight, the telescopic rod 61 can be easily transported. Furthermore, if the motor 60 is installed on the gable side of the greenhouse H, there is no fear that the installation position of the motor 60 will shift even if the ground G becomes muddy due to rain.

Further, in the present embodiment, the explanation has been given using the vinyl house H as an example of a simple structure, but the simple structure is not limited to the vinyl house H, and may be a greenhouse, a simple warehouse, or the like.

Although the preferred embodiments of the present invention have been described in detail above, it is natural that modifications, changes, and changes can be made without departing from the scope of the claims.

DESCRIPTION OF SYMBOLS 1... Light shielding device, 2... Light shielding sheet (first sheet), 2A... Roll, 3... Winding shaft, 4... Band, 5, 5A... Supporting metal fittings, 7 , 700... Second support fitting, 710... Fixing part, 720... Standing part, 730... Supporting part, 9, 90... Protective member, 9a... Convex part, 50... - Attachment part, 51... Roof side sheet fixing frame (second sheet fixing frame), 51b, 51c... Side wall piece, 51d... Opening, 52... Swash plate, 53... Light shielding sheet Fixing frame (support part, first sheet fixing frame), 91...bottom, 92...cover part, H...plastic house (simple construction), P1...arch pipe, S3...roof side Sheet (second sheet), S3a... extra length, S4... waterproof sheet, V, V1... screw, Va, V1a... head

Claims (14)

Multiple arch pipes arranged side by side in the depth direction,
a first sheet that covers the arch pipe from the top to the sides;
a winding shaft that is attached to the lower end of the first sheet along the depth direction of the arch pipe and rolls on the arch pipe to wind up and unwind the first sheet;
A support fitting installed in a simple structure and supporting the band, comprising a band installed along the longitudinal direction of the arch pipe and capable of pressing the first sheet toward the arch pipe from above,
A support fitting comprising: a support part that supports the band at a position spaced upward from the top of the arch pipe. They are arranged along the depth direction of the simple structure on both sides of the top of the arch pipe, are divided in the width direction with the top of the arch pipe as a border, and extend closer to the arch pipe than the first sheet. The support metal fitting according to claim 1, further comprising a pair of second sheet fixing frames capable of fixing a top side edge of the second sheet. a first sheet fixing frame that holds the first sheet and is located above the second sheet fixing frame when viewed from the arch pipe, and extends along the depth direction of the simple structure;
The support fitting according to claim 2, wherein the first sheet is a light-shielding sheet. A claim characterized in that the width in the height direction from the second sheet fixing frame to the first sheet fixing frame is greater than or equal to the radius of the roll of the first sheet that has been wound up to the maximum extent by the take-up shaft. The support metal fittings described in item 3. The support fitting according to claim 3, further comprising: a pair of attachment portions that extend along the depth direction of the arch pipe, are arranged on both sides of the arch pipe with the top of the arch pipe in between, and are fixed to the arch pipe. . one side swash plate connecting the first sheet fixing frame and one of the second sheet fixing frames;
the other side swash plate connecting the first sheet fixing frame and the other second sheet fixing frame;
The one side swash plate and the other side swash plate are inclined so that the width between the side edges of the second sheet fixing frame is wider than the width between the side edges of the first sheet fixing frame. The support fitting according to item 5. The second sheet fixing frame has a pair of side wall pieces that form an opening that allows the second sheet to be inserted therein;
The side wall piece on the top side of the arch pipe is arranged such that the length of the extra length between the top side end of the second sheet and the opening of the second sheet fixing frame is longer than the width of the opening. With the second sheet fixed to the second sheet fixing frame, the extra length portion is folded back toward the side of the arch pipe so that the extra length portion covers the opening. The support metal fitting according to item 6. The first sheet is a light shielding sheet,
a winding shaft that can roll on the arch pipe to wind up or unwind the first sheet;
a band installed along the longitudinal direction of the arch pipe and capable of pressing the first sheet toward the arch pipe from above;
A light shielding device comprising: the support fitting according to any one of claims 1 to 7, which is attached to the top of the arch pipe. The band is provided below the lower end of the first sheet in a state where it is unwound to the maximum extent by the winding shaft on the side of the simple structure, and one end of the band is located at a position spaced apart from the side of the simple structure toward the outdoors. The light shielding device according to claim 8, further comprising a second supporting metal fitting for supporting the light shielding device. The second support fitting includes a fixing part fixed to a side of the simple structure, a standing part that has elasticity and stands up from the fixing part toward the outdoor side of the simple structure, and a tip of the standing part. a support portion provided at the support portion for supporting one end of the band;
The light shielding device according to claim 9, wherein a tip of the upright portion is located above a normal line of the arch pipe passing through a base end of the upright portion. A protective member is installed in the arch pipe at least in a range where the winding shaft can roll and comes into contact with the winding shaft,
The light shielding device according to claim 8, wherein the protection member is attached to at least two of the plurality of arch pipes. 12. The protection member is made of rubber and has a convex portion at the center in the transverse direction that swells toward the side opposite to the arch pipe and forms a gap with the arch pipe. shading device. The protection member is made of rubber, and includes a bottom portion extending along the upper surface of the arch pipe, and a bottom portion that stands up from one end of the bottom portion in the lateral direction, with a predetermined gap between the bottom portion and the bottom portion. It has a cover part that covers the
The light shielding device according to claim 11, wherein the distance is equal to or larger than the height of a head of a screw that penetrates the bottom and is screwed into the arch pipe. a waterproof sheet supported by the support portion of the support fitting and disposed between the first sheet and the second sheet to cover at least one of the second sheet fixing frames;
The light shielding device according to claim 8, wherein the support metal fitting is the support metal fitting according to any one of claims 2 to 7.

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