JP3239108U - sheet take-up device - Google Patents

Abstract

A sheet winding device capable of increasing both the sheet feeding speed and the sheet winding speed by enlarging a motor is provided.
A light shielding sheet 2 for a vinyl house H comprising a plurality of arch pipes P1 arranged side by side in the depth direction and a light shielding sheet 2 covering from the top to the side of the arch pipes P1 can be wound up and unwound. The sheet winding device 1 includes a winding shaft 3 which is attached to the lower end of the sheet 2 along the depth direction of the arch pipe P1 and rolls on the arch pipe P1 to wind and feed the light shielding sheet 2. and a driving device 6 for driving the winding shaft 3. The driving device 6 is provided with a motor 60 installed on the gable surface of the greenhouse H or on the ground G, and the power of the motor 60 is transmitted to the winding shaft 3. and a transmission mechanism.
[Selection drawing] Fig. 1

Description

This invention relates to a sheet winding device.

As a sheet winding device, for example, it is installed in a simple structure such as a vinyl house, a greenhouse, a simple warehouse, etc., and is attached to the lower end of the sheet that covers the arch pipe of the simple structure from the top to the side. It has a winding shaft that rolls to wind up and feed out the sheet, and a motor that is directly attached to the end of the winding shaft. By driving the motor, the winding shaft rolls to wind up the sheet. And there is a thing that pays out (for example, Patent Document 1).

JP-A-11-299365

In such a sheet winding device, the sheet winding speed when the sheet is stored is determined by the rotational speed and torque characteristics of the motor. When increasing the size, the motor tends to be increased in size.

In the conventional sheet winding device, the motor is directly attached to the end of the winding shaft, so the motor bears the force of moving itself upward together with the winding shaft. In this case, if the size of the motor is increased in order to increase the output torque of the motor, the weight of the motor increases. An increase in the weight of the motor works to improve the sheet feeding speed when the sheet is unfolded, but also works to reduce the sheet winding speed when the sheet is stored.

Furthermore, when a motor is directly connected to the end of the winding shaft, if the weight of the motor increases, the sheet attached to the winding shaft may be stretched and deteriorated. There is a limit to increasing the size of .

As described above, in the conventional sheet winding device, if the size of the motor is increased, the sheet winding speed is not improved, resulting in deterioration of the sheet.

Therefore, in the conventional sheet winding device, it is difficult to improve both the sheet feeding speed and the sheet winding speed.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a sheet winding device capable of improving both the sheet feeding speed and the sheet winding speed.

In order to achieve the above object, the sheet winding device of the present invention is a sheet of a simple structure comprising a plurality of arch pipes arranged side by side in the depth direction and a sheet covering the arch pipes from the top to the side. A winding shaft is attached to the lower end of the sheet along the depth direction of the arch pipe and rolls on the arch pipe to wind and unwind the sheet. and a driving device for driving the winding shaft, wherein the driving device includes a motor installed on the gable surface of the simple structure or on the ground, and a transmission mechanism for transmitting the power of the motor to the winding shaft. characterized by having According to this configuration, since the motor is installed on the gable surface of the greenhouse or on the ground, the load of the motor does not act on the winding shaft.

Further, in the sheet winding device of the present invention, the transmission mechanism includes an extendable rod which is connected at one end to the output shaft of the motor, is rotatable in the circumferential direction and is extendable and retractable in the axial direction; a conversion mechanism provided between one end of the telescopic rod and one end of the winding shaft for converting the rotational movement of the telescopic rod in the circumferential direction into the rotational movement of the winding shaft and transmitting the rotational movement to the winding shaft; The motor may be rotatably attached to the gable surface of the simple construction or the ground on the gable side of the simple construction about the depth direction of the simple construction. According to this configuration, when the sheet is unfolded or retracted, the motor rotates about the depth direction of the vinyl house in accordance with the rolling of the winding shaft, and the distance between the motor and the winding shaft changes. The telescopic rod expands and contracts accordingly. Therefore, since the rolling of the winding shaft is guided by the telescopic rod, the winding shaft can be prevented from meandering in the depth direction of the greenhouse.

Further, in the sheet winding device of the present invention, the telescopic rod includes an outer cylinder, an inner cylinder axially movably inserted into the outer cylinder, and an inner cylinder axially extending along the inner circumference of the outer cylinder. and a roller provided rotatably on the outer periphery of the inner cylinder, accommodated in the recess, and capable of running on the inner surface of the recess. According to this configuration, when the telescopic rod expands and contracts when the seat is deployed or retracted, the rotation of the inner cylinder and the outer cylinder is prevented by the roller and the recess, and the roller runs on the inner surface of the recess. Therefore, the expansion and contraction of the expansion and contraction rod can be performed smoothly while the expansion and contraction rod functions as a transmission shaft for transmitting the drive of the motor to the conversion mechanism, so that the seat can be expanded or retracted smoothly.

Further, in the sheet winding device of the present invention, the motor may be installed at a position on the ground on the gable side of the simple structure so as not to face the doorway of the simple structure in the depth direction. According to this configuration, the motor installed on the ground does not obstruct traffic at the doorway of the simple structure.

Further, in the sheet winding device of the present invention, the motor may be installed on the end face of the simple structure. With this configuration, the distance between the motor and the winding shaft is shortened, so the length of the telescopic rod in the axial direction can be shortened. Therefore, the weight of the telescopic rod can be reduced, so that the sheet winding speed can be improved. In addition, since the telescopic rod is short and lightweight, the telescopic rod can be easily transported. Furthermore, if the motor is installed on the gable surface of the simple construction, even if the ground becomes muddy due to rain, there is no fear that the installation position of the motor will shift.

Further, in the sheet winding device of the present invention, the sheet may be a light shielding sheet. With this configuration, when the sunlight suddenly becomes strong, the light shielding sheet can be quickly unfolded. It is possible to prevent burns and suppress temperature rises in simple structures.

According to the sheet winding device of the present invention, since the load of the motor does not act on the winding shaft, it is possible to increase the size of the motor and improve both the sheet delivery speed and the sheet winding speed.

It is a perspective view of the simple structure of this Embodiment. It is a front view of the simple structure of this Embodiment. It is a perspective view which expands and shows the installation location of the motor of the drive device of this Embodiment. 3 is an exploded perspective view of the telescopic rod of the embodiment; FIG. It is a perspective view showing an enlarged portion of a converter of 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 is switched between the expanded state and the retracted state from the state shown in FIG. 1; FIG. 4 is a front view of the simple structure according to the present embodiment, showing a state in which the motor of the driving device is installed on the end surface of the simple structure;

The present embodiment will be described below with reference to the drawings. The same reference numerals throughout the several drawings refer to the same parts.

The simple structure of this embodiment is a vinyl house H in this embodiment. As shown in FIG. 1, the plastic greenhouse H includes a plurality of arch pipes P1 arranged side by side in the depth direction, a light-transmitting sheet S directly extended on the arch pipes P1, and a light-shielding sheet covering the light-transmitting sheet S from above. and a light shielding device 1 as a sheet winding device capable of winding and unwinding the light shielding sheet 2 .

As shown in FIGS. 1 and 2, the light shielding device 1 of the present embodiment 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 for light shielding. A winding shaft 3 for winding and feeding the sheet 2 and a driving device 6 for driving the winding shaft 3 are provided.

Each part of the greenhouse H of this embodiment will be described in detail below. The arch pipe P1 of this embodiment has a pair of upright portions P1a that rise from the ground G, and a substantially arcuate arch portion P1b that connects the upper ends of the upright portions P1a. In the following description, the apex portion of the arch pipe P1 is 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 the side portion of the arch pipe P1.

Further, the front side of the vinyl house H as seen from the depth direction is the end surface of the vinyl house H, and the side surface of the vinyl house H as seen from the depth direction and the surface in the range of the upright portion P1a of the arch pipe P1 is the vinyl house. The roof surface of the vinyl house H is defined as the side surface of H, and the surface within the range of the arch portion P1b of the arch pipe P1 as viewed from the depth direction.

In this embodiment, the light-transmitting sheets S stretched over the arch pipe P1 are composed of side sheets S1 covering the left and right sides of the greenhouse H and front and rear sheets S1 covering the left and right sides of the greenhouse H, respectively, as shown in FIGS. A gable-side sheet S2 covering the gable surface, respectively, and two sheets which are divided in the width direction with the top of the arch pipe P1 as a boundary and stretched from the top to each side of the arch pipe P1 to cover the roof surface of the vinyl house H. roof side sheets S3, S3.

Specifically, as shown in FIGS. 1 and 2, each upright portion P1a of the arch pipe P1 when viewed from the depth direction has an upper side extending over the upper end side of the upright portion P1a along the depth direction. A side frame F1 and a lower side frame F2 that spans the lower end side of the upright portion P1a along the depth direction are arranged side by side. The side sheets S1 are spread out on the sides of the greenhouse H by fixing the ends of the side sheets S1 between the upper and lower side frames F1 and F2.

Further, as shown in FIG. 2, the plastic greenhouse H includes a plurality of support pipes P2 arranged along the width direction of the plastic greenhouse H and supporting the arch pipe P1 arranged on the gable side from below. A plurality of gable-side frames F3 are provided between the support pipes P2 along the width direction of the greenhouse H, and an opening surrounded by the support pipes P2, the gable-side frames F3 and the ground G is formed. .

By fixing the gable-side sheet S2 to the gable-side frame F3 while avoiding the opening, the gable-side sheet S2 is spread over the gable surface of the greenhouse H and the opening functions as an entrance to the greenhouse H. I am letting

On the gable side of the vinyl house H, rails (not shown) are laid between the support pipes P2, P2 along the upper frame and the lower frame of the opening. By slidably installing a pair of doors D, D along the rail, the opening of the greenhouse H can be opened and closed by the door D. The number of doors D is not particularly limited, and may be determined as appropriate according to the size of the opening.

Further, in the present embodiment, the door D is a sliding door, but the opening and closing direction of the door D is not particularly limited, and the door D may be a hinged door, for example. In addition, although the said opening part and the door D should just be provided in the end surface of at least one side of the greenhouse H, they may be provided in both end surfaces.

Further, as shown in FIGS. 1 and 2, a support metal fitting 5 extending along the depth direction is bridged over the upper ends of the apexes of the plurality of arch pipes P1. The support bracket 5 is provided with roof-side frames 5a on the right and left sides of the support metal fitting 5 to which the upper ends of the roof-side sheets S3 can be fixed. 1 and 2, between the right roof frame 5a and the right side frame F1 of the support bracket 5, and between the left roof frame 5a and the left side frame F1 of the support bracket 5. A roof-side sheet S3 is fixed between them.

Thus, in this embodiment, the two roof-side sheets S3, S3 are stretched from the top of the arch pipe P1 to each side by dividing it in the width direction with the top of the arch pipe P1 as a boundary. However, without installing the support metal fittings 5, one roof-side sheet that straddles the top of the arch pipe P1 from the left side frame F1 to the right side frame F1 may be extended.

Further, although not described in detail, the side frames F1 and F2, the end frame F3, and the left and right roof side frames 5a of the support fitting 5 in this embodiment are each formed with an opening narrower than the bottom. With the sheets S1, S2 and S3 inserted into the grooves, elastic members made of corrugated metal springs are fitted over the sheets S1, S2 and S3 so that the sheets S1, S2 and S3 are inserted into the grooves. S2 and S3 are fixed to the respective frames F1, F2, F3 and 5a by elastic force of elastic members. The elastic member is not limited to a corrugated metal spring, and may be another elastic member such as rubber or a coil spring.

As the translucent sheet S of the present embodiment, a soft sheet such as a polyolefin film such as a vinyl chloride film or a PET film is used. good.

In the present embodiment, as shown in FIGS. 1 and 2, between the side frames F1, F1 provided on each side of the greenhouse H, an arch pipe is provided above the light shielding sheet 2, which will be described later. A band 4 spans along the longitudinal direction of the arch pipe P1 so as to straddle the top of P1.

Since the band 4 is arranged above the light shielding sheet 2 in this way, even if the light shielding sheet 2 is blown by the wind, the band 4 presses the light shielding sheet 2 toward the arch pipe P1 to shield the light. Fluttering of the sheet 2 is prevented.

Further, in the present 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 according to the climatic conditions such as the strength of the wind in the area where the greenhouse H is installed.

Further, in this embodiment, a single-building vinyl greenhouse H that is installed independently is described, but the vinyl greenhouse H may be a continuous-building type in which a plurality of buildings are connected to the left and right in the width direction. good.

Next, the light shielding device 1 of this embodiment will be described in detail. As shown in FIGS. 1 and 2, the light shielding device 1 of this embodiment is attached to each end of the light shielding sheet 2 covering the roof side sheet S3 of the vinyl house H from above. A winding shaft 3 capable of rolling on the arch pipe P1 from one side to the top of the arch pipe P1 via the winding shaft 3, and two driving devices 6 for driving each winding shaft 3 respectively.

Further, in the present embodiment, as shown in FIG. 1, three arch pipes P1 among the plurality of arch pipes P1 are arranged at predetermined intervals, and the arch pipes P1 are moved from above the roof-side sheet S3. A protective member 9 made of rubber is attached from the top to each side. Therefore, when the light-shielding device 1 winds up or feeds out the light-shielding sheet 2, the wind-up shaft 3 rolls on the arch pipe P1 via the protective member 9, so that the light-shielding sheet wound around the wind-up shaft 3 is rolled. 2 can be suppressed from being deteriorated by rubbing against the arch pipe P1 and the roof side sheet S3.

The light-shielding sheet 2 of the present embodiment covers the roof surface of the vinyl house H across the top of the arch pipe P1, and the central portion facing the top of the arch pipe P1 is fixed to the support fitting 5. there is A winding shaft 3 extending in the depth direction of the greenhouse H is attached to each end of the light shielding sheet 2 .

For this reason, although details will be described later, when the winding shaft 3 is rolled to one side of the arch pipe P1 by the drive device 6, the light shielding sheet 2 moves toward the winding shaft as shown on the left side in FIG. The arch pipe P1 is drawn out from the roof side sheet S3 and becomes a spread state covering the range from the top to one side of the arch pipe P1 on the roof side sheet S3, so that the amount of sunlight entering the vinyl house H can be reduced. On the contrary, when the winding shaft 3 is rolled up 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 in FIG. Since P1 is wound up to the top side, it is in a stored state, so that sunlight enters the vinyl house H without being blocked by the light shielding sheet 2. - 特許庁Therefore, the light shielding device 1 of the present embodiment can adjust the amount of sunlight entering the greenhouse H by driving the winding shaft 3 with the driving device 6 to unfold or retract the light shielding sheet 2 .

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

As shown in FIG. 1, the driving device 6 of the present embodiment includes a motor 60 installed on the ground G of the vinyl house H, and the power of the motor 60 is transmitted to the winding shaft 3 to wind the light shielding sheet 2. and a transmission mechanism for winding onto the take-up shaft 3 or feeding out from the take-up shaft 3 .

The transmission mechanism of the present embodiment includes an extendable rod 61 that is connected to the output shaft of the motor 60 at one end and is rotatable in the circumferential direction and extendable in the axial direction; and a conversion mechanism 62 which converts the rotational motion of the telescopic rod 61 in the circumferential direction into the rotational motion of the winding shaft 3 and transmits it to the winding shaft 3 .

1 and 3, the motor 60 of the present embodiment is mounted on 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 rotatably around an axis. At this time, as shown in FIG. 1, the motor 60 is installed at a position that does not face the doorway of the greenhouse H on the ground G in the depth direction, so that the motor 60 does not interfere with traffic through the doorway of the greenhouse H. It has become.

The holder 8, as shown in FIG. A pair of support pieces 81, 81 standing vertically from each longitudinal end, and a rotating shaft 82 extending along the depth direction of the greenhouse H, spanning between the support pieces 81, 81 are provided.

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

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 vinyl house H side may be fixed to the support pipe P2. Also, the configuration of the holder 8 is an example, and is not limited to the configuration described above. Further, the method of attaching the motor 60 to the ground G is not particularly limited as long as the motor 60 can be attached so as to be rotatable about the depth direction of the greenhouse H.

Next, as shown in FIGS. 1 and 4, the extensible rod 61 of the present embodiment has a cylindrical outer cylinder 63, and is inserted into the outer cylinder 63 so as to be axially movable, and the output of the motor 60 is controlled. It has a cylindrical inner cylinder 64 connected to the shaft, and is configured to be expandable and contractable in the axial direction.

In addition, the telescopic rod 61 has a detent mechanism that prevents the inner cylinder 64 from rotating with respect to the outer cylinder 63 . In addition, the outer cylinder 63 also rotates in the circumferential direction. Therefore, the telescopic rod 61 also functions as a transmission shaft for transmitting the drive of the motor 60 . Although the inner cylinder 64 is connected to the output shaft of the motor 60 in this embodiment, the outer cylinder 63 may be connected to the output shaft of the motor 60 .

Specifically, as shown in FIG. 4, the anti-rotation mechanism of this embodiment includes four recesses 63b provided along the inner periphery of the outer cylinder 63 along the axial direction, provided in each recess 63b and four rollers 64a capable of running on the inner surface of the recess 63b. When the motor 60 is driven to rotate the inner cylinder 64, the roller 64a comes into contact with the inner surface of the recess 63b and restricts the rotation of the inner cylinder 64 with respect to the outer cylinder 63. rotate together in the circumferential direction.

Specifically, as shown in FIG. 4, four convex portions 63a extending along the axial direction are provided on the inner circumference of the outer cylinder 63 at regular intervals in the circumferential direction. A quadrangular concave portion 63b is formed between the portions 63a, 63a when viewed from the axial direction. The diameter of the circle passing through the tip of each projection 63a is set to be larger than the outer diameter of the inner cylinder 64, so that when the telescopic rod 61 expands and contracts, the projection 63a moves along the outer circumference of the inner cylinder 64. You can avoid interfering.

A long groove 63c formed along the axial direction is provided at the tip of each projection 63a. The long groove 63c discharges water that has entered between the outer cylinder 63 and the inner cylinder 64 when the telescopic rod 61 is expanded and contracted, and functions as a lightening for reducing the weight of the telescopic rod 61. As shown in FIG. However, the long groove 63c may be omitted.

Further, as shown in FIG. 4, four rollers 64a provided on the outer circumference of the inner cylinder 64 are provided with two shafts (Fig. not shown).

Also, the diameter of each roller 64a is slightly shorter than the width of the recess 63b. Therefore, when the expansion rod 61 expands and contracts while each roller 64a is accommodated in the recess 63b provided on the inner circumference 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 the present embodiment not only prevents rotation of the inner cylinder 64 with respect to the outer cylinder 63, but also guides the expansion and contraction of the telescopic rod 61 by the roller 64a and the recess 63b.

Further, in the present embodiment, when four rollers 64a provided at the same position on the outer circumference of the inner cylinder 64 in the axial direction are used as one roller group A, the roller group A are provided at predetermined intervals in the axial direction. Therefore, compared with the case where the number of roller groups A is one, the telescopic rod 61 can be extended and retracted more stably. However, the number of roller groups A may be one. Also, the number of rollers 64a in the roller group A is not limited to four, and it is sufficient if at least one concave portion 63b and one roller 64a are provided.

Also, the configuration of the anti-rotation mechanism for the telescopic rod 61 described above is an 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 in a shape other than a circular shape and fitted to each other to prevent rotation of the inner cylinder 64 with respect to the outer cylinder 63 .

Further, the conversion mechanism 62 of the present embodiment, for example, as shown in FIG. It has a first shaft 62b and a horizontally extending second shaft 62d having on its outer periphery a second bevel gear 62c that engages with the first bevel gear 62a and forms an angle of 45 degrees. Thus, the rotational motion of the telescopic rod 61 is converted into the rotational motion of the winding shaft 3 . 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 it can convert the rotational movement of the telescopic rod 61 in the circumferential direction into the rotational movement of the winding shaft 3. For example, , a worm screw mechanism may be employed.

Next, the operation of the light shielding device 1 of this embodiment will be described 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 to rotate the telescopic rod 61 connected to the output shaft of the motor 60 in the forward direction. . Then, the rotating motion of the telescopic rod 61 is converted into the rotating motion of the winding shaft 3 by the conversion mechanism 62, so that the winding shaft 3 rolls toward the side portion of the arch pipe P1.

As described above, the motor 60 is attached to the ground G through the holder 8 so as to be rotatable about the depth direction of the vinyl greenhouse H, so that the winder near the top of the arch pipe P1 is mounted on the ground G. When the shaft 3 rolls toward the side of the arch pipe P1, the motor 60 rotates about the depth direction of the vinyl house H in accordance with the movement of the winding shaft 3, and the motor 60 and the winding shaft 3 move. As the distance becomes shorter, the telescopic rod 61 contracts (see the left side in FIG. 2 and the right side in FIG. 6).

On the other hand, when the stretched light-shielding sheet 2 is stored up to the top of the arch pipe P1, the motor 60 is driven to rotate in the reverse direction, and the telescopic rod 61 connected to the output shaft of the motor 60 is rotated in the reverse direction. . Then, the rotating motion of the telescopic rod 61 is converted into the rotating motion 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 along 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. 6).

As described above, in the present embodiment, the telescopic rod 61 connected to the winding shaft 3 via the conversion mechanism 62 expands and contracts while rotating about the motor 60 as the winding shaft 3 rolls. , the telescopic rod 61 can guide the rolling motion of the winding shaft 3 .

Therefore, according to the light shielding device 1 of the present embodiment, the telescopic rod 61 guides the rolling motion of the winding shaft 3 to prevent the winding shaft 3 from meandering in the depth direction of the greenhouse H. The light shielding sheet 2 can be deployed 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 the present embodiment is determined by the rotation 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 be large.

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

Furthermore, when a motor is directly connected to the end of the winding shaft, if the weight of the motor increases, the sheet attached to the winding shaft may be stretched and deteriorated. There is a limit to increasing the size of .

As described above, in the conventional sheet winding device, if the size of the motor is increased, the sheet winding speed is not improved and the deterioration of the sheet is caused. It has been difficult to improve both the payout speed and the take-up speed of a sheet in the case of a directly coupled sheet take-up device.

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 weight of the motor 60 is increased by increasing the size of the motor 60 in order to increase the output torque of the motor 60, the weight increase of the motor 60 does not affect the light shielding sheet. The winding speed of the light shielding sheet 2 is not lowered when the light shielding sheet 2 is stored. Furthermore, since the load of the motor 60 does not act on the take-up shaft 3, the light-shielding sheet 2 is not pulled by the load of the motor 60. - 特許庁

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 size increase of the motor 60. can improve both.

If both the delivery speed and the winding speed of the light shielding sheet 2 can be improved in this way, for example, when the sunlight suddenly becomes strong, the light shielding sheet 2 can be quickly unfolded. prevention and temperature rise in the greenhouse H can be suppressed.

Although the motor 60 is installed on the ground G in the light shielding device 1 of the present embodiment, the motor 60 may be installed on the gable surface of the greenhouse H as shown in FIG. Even in this case, since the load of the motor 60 does not act on the winding shaft 3, the size of the motor 60 is increased in order to increase the output torque, thereby improving both the feeding speed and the winding speed of the light shielding sheet 2. can be made

When the motor 60 is installed on the gable surface of the vinyl greenhouse H in this manner, the distance between the motor 60 and the winding shaft 3 becomes shorter than when the motor 60 is installed on the ground G, so that the axis of the telescopic rod 61 The direction length can be shortened. Therefore, since the telescopic rod 61 can be made lighter, the speed of winding the light shielding sheet 2 can be improved. In addition, since the telescopic rod 61 is short and lightweight, the transportation of the telescopic rod 61 is facilitated. Furthermore, if the motor 60 is installed on the gable surface 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 end surface of the greenhouse H is not particularly limited as long as the motor 60 is rotatably attached about the depth direction of the greenhouse H as an axis. In this embodiment, the above-mentioned holder 8 is fixed to the support pipe P2, and the motor 60 is attached to the gable surface of the greenhouse H via the holder 8. As shown in FIG.

As described above, the light shielding device 1 as the sheet winding device of the present embodiment includes a plurality of arch pipes P1 arranged side by side in the depth direction, and a light shielding sheet as a sheet covering from the top to the side of the arch pipes P1. A light-shielding sheet 2 of a vinyl house H as a simple construction provided with a sheet 2 can be wound up and paid out, and is attached to the lower end of the light-shielding sheet 2 along the depth direction of the arch pipe P1, A winding shaft 3 for winding and feeding the light shielding sheet 2 by rolling on the arch pipe P1 and a driving device 6 for driving the winding shaft 3 are provided. A motor 60 installed on the ground G and a transmission mechanism for transmitting the power of the motor 60 to the winding shaft 3 are provided.

In the shading device 1 constructed in this manner, the motor 60 is installed on the gable surface of the greenhouse H or the ground G, so that the load of the motor 60 does not act on the winding shaft 3 . Therefore, according to this light shielding device 1, even if the weight of the motor 60 is increased by increasing the size of the motor 60 in order to increase the output torque of the motor 60, the weight increase of the motor 60 will not be enough when the light shielding sheet 2 is stored. , the winding speed of the light shielding sheet 2 is not reduced. Furthermore, since the load of the motor 60 does not act on the take-up shaft 3, the light-shielding sheet 2 is not pulled by the load of the motor 60. - 特許庁

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 size increase of the motor 60. can improve both.

Further, in the present embodiment, the light shielding sheet 2 is used as the sheet wound by the winding shaft 3, and the light shielding device 1 is used as the sheet winding device. As described above, when the sheet winding device of the present invention is the light shielding device 1, for example, when the sunlight suddenly becomes strong, the light shielding sheet 2 can be quickly unfolded. Temperature rise in H can be suppressed.

However, the sheet winding device of the present invention is a ventilation device that opens and closes the roof surface of the vinyl house H by driving the winding shaft 3 with the sheet wound by the winding shaft 3 as the roof side sheet S3. good. When the sheet winding device is used as a ventilation device in this way, the roof-side sheet S3 can be quickly unfolded when it suddenly starts to rain, so the time during which rain falls into the greenhouse H can be shortened. Further, when the air temperature suddenly rises, the temperature rise in the greenhouse H can be suppressed by quickly storing the roof side sheet S3 and ventilating.

In this embodiment, the shoulder portion of the arch pipe P1, which is the boundary between the standing portion P1a and the arch portion P1b, is the side portion of the arch pipe P1. Any portion apart in the width direction may be used, and portions other than the shoulder portion of the arch pipe P1 may be the side portions of the arch pipe P1. For example, when the arch pipe P1 has a side part in the middle of the arch part P1b, the sheet wound around the winding shaft 3 covers from the top of the arch pipe P1 to the middle of the arch part P1b. may

Further, in the light shielding device 1 of the present embodiment, the transmission mechanism includes a telescopic rod 61 which is connected at one end to the output shaft of the motor 60, is rotatable in the circumferential direction and is telescopic in the axial direction, and the telescopic rod 61. A conversion mechanism 62 is provided between the other end and one end of the winding shaft 3 to convert the rotational motion of the telescopic rod 61 in the circumferential direction into the rotational motion of the winding shaft 3 and transmit it to the winding shaft 3 . The motor 60 is rotatably attached to the gable surface of the greenhouse H or the ground G on the gable side of the greenhouse H about the depth direction of the greenhouse H as an axis.

In the light shielding device 1 configured as described above, when the light shielding sheet 2 is deployed or retracted, the motor 60 rotates around the depth direction of the greenhouse H in accordance with the rolling of the winding shaft 3, and the motor 60 rotates. The extensible rod 61 expands and contracts according to the change in the distance between 60 and the winding shaft 3 . Therefore, rolling of the winding shaft 3 is guided by the telescopic rod 61, so that 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 the configuration of the transmission mechanism is not particularly limited as long as the power of the motor 60 can be transmitted to the winding shaft 3 .

In addition, in the light shielding device 1 of the present embodiment, the telescopic rod 61 includes the outer cylinder 63, the inner cylinder 64 inserted into the outer cylinder 63 so as to be axially movable, and and a roller 64a that is rotatably provided on the outer circumference of the inner cylinder 64, is accommodated in the recess 63b, and can run on the inner surface of the recess 63b.

In the light shielding device 1 configured as described above, the rotation of the inner cylinder 64 and the outer cylinder 63 is prevented by the roller 64a and the concave portion 63b when the telescopic rod 61 expands and contracts when the light shielding sheet 2 is deployed or retracted. A roller 64a runs on the inner surface of the recess 63b.

Therefore, according to this configuration, the extendable rod 61 can be smoothly extended and retracted while functioning as a transmission shaft for transmitting the drive of the motor 60 to the conversion mechanism 62, so that the light shielding sheet 2 can be expanded or retracted. I can do it smoothly.

However, the mechanism for preventing rotation of the outer cylinder 63 and the inner cylinder 64 in the extensible rod 61 is not limited to the above mechanism. The telescopic rod 61 may function as a transmission shaft for transmitting the drive of the motor 60 to the conversion mechanism 62 by preventing the rotation of the inner cylinder 64 with respect to the outer cylinder 63 .

Further, 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 not facing the doorway of the greenhouse H in the depth direction. there is In the shading device 1 constructed in this way, the motor 60 installed on the ground G of the vinyl house H does not interfere with traffic at the doorway.

When the motor is installed on the gable surface of the greenhouse H, the distance between the motor 60 and the winding shaft 3 is shorter than when the motor 60 is installed on the ground G. length can be shortened. Therefore, since the telescopic rod 61 can be made lighter, the speed of winding the light shielding sheet 2 can be improved. In addition, since the telescopic rod 61 is short and lightweight, the transportation of the telescopic rod 61 is facilitated. Furthermore, if the motor 60 is installed on the gable surface 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.

In addition, in the present embodiment, the vinyl house H is explained as an example of the simple structure, but the simple structure may be a greenhouse, a simple warehouse, or the like, and is not limited to the vinyl house H.

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

DESCRIPTION OF SYMBOLS 1... Light shielding device (sheet winding device), 2... Light shielding sheet (sheet), 3... Winding shaft, 6... Driving device, 60... Motor, 61... Expansion and contraction Rod, 62... conversion mechanism, 63... outer cylinder, 63b... recessed part, 64... inner cylinder, 64a... roller, G... ground, H... vinyl house (simple structure ), P1... arch pipe

Claims (6)

A sheet winding device capable of winding and unwinding the sheet of a simple construction comprising a plurality of arch pipes arranged side by side in the depth direction and a sheet covering the top to the side of the arch pipe,
a winding shaft attached to the lower end of the sheet along the depth direction of the arch pipe and rolling on the arch pipe to wind and unwind the sheet;
and a driving device that drives the winding shaft,
The driving device
a motor installed on the gable surface or the ground of the simple structure;
and a transmission mechanism for transmitting the power of the motor to the winding shaft. The transmission mechanism includes an extendable rod that is connected to the output shaft of the motor at one end and is rotatable in the circumferential direction and extendable in the axial direction, and between the other end of the extendable rod and one end of the winding shaft. a converting mechanism provided in the telescopic rod for converting the rotational motion of the telescopic rod in the circumferential direction into the rotational motion of the winding shaft and transmitting the rotational motion to the winding shaft;
2. The motor according to claim 1, wherein the motor is attached to the gable surface of the simple structure or the gable-side ground of the simple structure so as to be rotatable about the depth direction of the simple structure. sheet take-up device. The telescopic rod includes an outer cylinder, an inner cylinder axially movably inserted into the outer cylinder, a recess axially provided in the inner circumference of the outer cylinder, and an outer circumference of the inner cylinder. 3 . The sheet winding device according to claim 2 , further comprising: a roller rotatably provided in the recess, which is accommodated in the recess, and which can run on the inner surface of the recess. 2. The sheet winding device according to claim 1, wherein the motor is installed at a position on the ground on the gable side of the simple structure so as not to face the doorway of the simple structure in the depth direction. The sheet winding device according to claim 2, wherein the motor is installed on the end surface of the simple structure. The sheet winding device according to any one of claims 1 to 5, wherein the sheet is a light shielding sheet.

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