JP2508778Y2 - Sheet winding device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet winding device, and more particularly to a sheet unfolding mechanism.

[0002]

2. Description of the Related Art Conventionally, as a sheet winding device, for example, there is one described in Japanese Utility Model Laid-Open No. 4-21246. That is, when the motor directly connected to the take-up shaft is driven to rotate the take-up shaft, the take-up shaft winds up the lower portion of the vinyl sheet via the guide member and rises along the slap material. The motor ascends along the guide shaft.

[0003]

[Problems to be Solved by the Invention] However, since the vinyl sheets are extremely thin and soft and are tightly wound by the pulling force based on the weight of the winding shaft, the wound vinyl sheets stick to each other. Cheap. Therefore, when the motor rotates in the reverse direction to expand the vinyl sheets, the vinyl sheets may stick to each other during the expansion and may not be separated. When the motor is forcibly rotated in the reverse direction at such a time, the lower surface of the vinyl sheet already developed easily wraps around the upper surface of the vinyl sheet wound on the winding shaft. As a result, although the winding shaft is rotated in the reverse direction, the winding shaft moves up again while winding the vinyl sheet, and sometimes the vinyl sheet is broken and the winding shaft bends. In particular, such a problem is likely to occur when the inclination angle of the inclined surface is small, because the peeling force of the winding shaft with respect to the vinyl sheet is small.

In view of the above problems, it is an object of the present invention to provide a sheet winding device capable of smoothly expanding the sheet and preventing damage to the sheet and the winding shaft.

[0005]

In order to achieve the above-mentioned object, a sheet winding device according to the present invention forms a covering surface by connecting both ends of a plurality of vertical members arranged in parallel with a horizontal member. Of the sheet covering the covering surface, the edge portion located on one lateral member forming the covering surface is fixed to one lateral member, and the edge portion located on the other lateral member is fixed to the winding shaft. On the other hand, in the sheet winding device that fixes one end of the unfolding string that is pulled in the unfolding direction at the time of unfolding to the winding shaft and winds it with the sheet, the other end of the unfolding string is rotatably attached. The small diameter winding drum fixed to the supported large diameter winding drum and integrated with this large diameter winding drum so as to have the same axis center, the other end of the string with the weight suspended at one end Is fixed. The other end of the deployment cord is attached to the other lateral member via the first pulley attached to the other lateral member, while the other end of the deployment cord and the first pulley are connected to each other. A second pulley is arranged in an intermediate portion of the deploying cord located between them, and a weight is moved up and down via a third pulley attached to the one lateral member with a string having one end fixed to the second pulley. You may hang it as much as possible. Furthermore, the other end of the unfolding string is
It is fixed to a winding drum that is rotatably supported by being bridged over the other lateral member, and the middle of the unfolding string located between the other end of the unfolding string and the other lateral member. A weight may be hung on the part via a pulley so as to be vertically movable.

[0006]

Therefore, according to the present invention, at the time of unfolding, the unfolding string pulls the take-up shaft around which the sheet is taken up to forcibly peel off the stuck sheet.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment according to the present invention will be described with reference to the accompanying drawings shown in FIGS. The first embodiment is applied to a vinyl house, and the framework of this vinyl house is a mountain-shaped rafter which is bent in a substantially V shape between columns 1 and 2 standing upright so as to face each other at a predetermined interval. 3 is erected, and the girder members 4 and 4 are erected between the stanchions 1 and 2 and the other stanchions 1 and 2 which are erected at positions adjacent to the stanchions 3, respectively. And the girder material 4, 4
By installing each of the slack materials 3, it is possible to add more by the same operation thereafter.

In the vinyl house, a purlin material 5 is provided on the inner side of the top of the slack material 3 so that the slack material 3 is formed after the tops of the slack material 3 are positioned at a predetermined pitch. Vinyl sheet 6 on the entire inclined surface
Is coated with. The vinyl sheet 6 has its central portion fixed to the main material 5 with a packer 8 which is a fixture, while the lower end is attached to the winding shaft 9 with the packer 8.

Next, the slide member 1 which is a slide bearing is attached to the guide shaft 10 which is the slack member 3 located on the outermost side.
1 is slidably mounted, and a motor 12 directly connected to the end of the winding shaft 9 is fixed to the slide member 11. The motor 12 has a reduction gear built therein, and when the power is turned off, the rotation shaft inside the motor 12 is locked. The power cord 13 of the motor 12 is movably suspended on the guide shaft 10.

An arch material 14 is erected between the connecting portions 1a and 2a provided at the upper ends of the columns 1 and 2, and the ridge wood 15 provided inside the top of the arch material 14 serves to connect the arch material 14 to the arch material 14. The tops are positioned at a predetermined pitch.

A winding drum 21 for winding the unfolding cord 20 is rotatably provided on the columns 1 and 2 located in the middle, and one end of the cord 20 is fixed to the winding shaft 9. ing. On one surface of the winding drum 21, a winding drum 24 for winding the string 23 on which the weight 22 is suspended is provided on the same axis. Therefore, when the winding shaft 9 is rotated to wind up the vinyl sheet 6, the cord 20 wound around the winding drum 21 is unwound, and at the same time, the cord 23 is wound around the winding drum 24.

Since the winding drums 21 and 21 provided on the supporting columns 1 and 2 are arranged on substantially the same vertical plane, no torsion moment acts on the supporting columns 1 and 2. Further, the curved surface formed by the arch material 14 and the pillar 1,
The side formed by 2 is covered with a vinyl sheet,
It is not shown for convenience of explanation. Further, the cord 22 is not limited to the one having a circular cross section, and may be, for example, a flat strip, and its material and cross sectional shape are not limited.

Next, the opening and closing work of the greenhouse will be described. At night, when the outside temperature is low, the vinyl sheet 6 is closed. If the motor 12 is driven when the outside air temperature rises with sunrise, the winding shaft 9 rotates against the tensile force of the string 20 to move the lower end of the vinyl sheet 6 and one end of the string 20. At the same time, the motor 12 and the slide member 11 move up along the guide shaft 10 while winding up and move up along the slack material 3. Therefore, the winding drum 24, which is integral with the winding drum 21 that unwinds the string 20, rotates to wind the string 23 and pull up the weight 22. As a result, a pulling force based on the weight 22 always acts on the winding shaft 9.

When the winding shaft 9 winds up the vinyl sheet 6, the winding shaft 9 becomes thicker, but the vinyl sheet 6 is extremely thin, and the weight and weight of the winding shaft 9 are 22. Because it is tightly wound by the pulling force of
The winding shaft 9 does not become too thick. Moreover, three rafters,
Since the distance between 3 is long, the winding shaft 9 rises while winding the vinyl sheet 6 without any trouble.

When the motor 12 is stopped when the winding shaft 9 winds up the vinyl sheet 6 and moves up to a predetermined position, the motor 12 is locked by a lock mechanism having a rotating shaft therein. Therefore, the winding shaft 9 does not descend due to its own weight and the tensile force of the string 20.

The vinyl sheet 6 of the vinyl house
By fully opening, the temperature rise inside the greenhouse can be prevented, and the amount of sunlight transmitted increases, so that the growth of crops is promoted.

Next, when the outside air temperature becomes low, the motor 12 is driven in the opposite direction to the reverse rotation of the take-up shaft 9, whereby the weight of the take-up shaft 9 and the weight 22 are applied. The pulling force of the string 20 is applied, and the winding shaft 9 unfolds the wound vinyl sheet 6 while forcibly peeling it off and then descends. As a result, the motor 12 and the sliding member 11 are guided by the guide shaft 1.
Return to the original position along 0. Then, by stopping the motor 12, the opening / closing work of the greenhouse is completed.

As a result, in the vinyl greenhouse according to this embodiment, the ceiling has a double structure, the heat retaining property is improved, and the temperature decrease in the vinyl greenhouse can be prevented.

As shown in FIG. 3, the second embodiment is almost the same as the above-mentioned first embodiment, except for the attachment structure of the cord 20. That is, the first pulley 25a in which the other end of the string 20 having one end fixed to the winding shaft 9 is attached to the girder member 4
And it is being fixed to the said girder material 4 via the 2nd pulley 25b. Further, the other end of the string 26 having one end attached to the second pulley 25b has the third pulley 25 attached to the purlin 5.
It is attached to the main building material 5 via c and the fourth pulley 25d, and a weight 22 is hung from the fourth pulley 25d.

According to this embodiment, the cord 20 is connected via the first, second, third and fourth pulleys 25a, 25b, 25c and 25d.
Since the winding distance of the winding shaft 9 is long,
There is an advantage that the lifting distance of the weight 22 can be shortened.

As shown in FIG. 4, the third embodiment is substantially the same as the above-mentioned first embodiment, except that the beam member 4 is rotatably attached to the column 2 to form a rewinding shaft. Is. For convenience of description, only different parts are shown. That is, the rewinding shaft 4 has, at one end thereof, the outermost support column 1,
The motor 27 fixed to 2 is directly connected. A winding drum 28 is provided on the rewinding shaft 4, and the string 20 having one end fixed to the winding shaft 9 is wound around the winding drum 28 via a pulley 25e. . A weight 22 is suspended on the pulley 25e.

Therefore, when the wound vinyl sheet 6 is unfolded in this embodiment, the motor 12 is unlocked, the motor 27 is driven to rotate the rewinding shaft 4, and the cord 20 is wound up. The vinyl sheet 6 wound on the winding shaft 9 may be unrolled and pulled by being wound around the drum 28 and pulled. When unrolling the wound vinyl sheet 6, the motor 12 may be simultaneously rotated to unfold it. Other points are the same as those of the above-described embodiment, and the description is omitted.

In the fourth embodiment, as shown in FIGS. 5 to 7, in all of the above-described embodiments, the motor 12 is integrally rotated with the winding shaft 9 to rotate the winding shaft 9. This is a case where the shaft 9 is rotated via a removable drive rod 30.
That is, as shown in FIG. 5, the end portion 9a of the winding shaft 9 is
It projects outward from the guide shaft 10, which is the slack member 3 located on the outermost side, and has a square pipe shape, which can be fitted to the rotary shaft 34 of the drive rod 30.

As shown in FIG. 6, the drive rod 30 has an operation box 32 having a motor (not shown) built in at one end of a cylindrical rod portion 31, and a gear box 33 at the other end. A rotating shaft 34 is provided.
The rotating shaft 34 has a cross-sectional shape such that the tip end thereof can be fitted into the end 9a of the winding shaft 9, and the gear box 3
It is possible to rotate via a gear mechanism (not shown) in 3.

When the switch 35 of the operation box 32 is operated to rotate the built-in motor, an interlocking shaft (not shown) rotatably housed in the rod portion 31 is rotated, and the interlocking shaft is rotated. The gear mechanism in the gear box 33 is driven to rotate the rotary shaft 34. In addition, 36 is a shoulder strap, 3
Reference numeral 7 is a grip portion, and 38 is a power cord.

Therefore, when opening and closing the greenhouse, an operator fits the rotary shaft 34 of the drive rod 30 to the end 9a of the winding shaft 9 and then operates the switch 35 to drive the motor. When the rotating shaft 34 is rotated to rotate the winding shaft 9, the winding shaft 9 winds up the vinyl sheet 6 and the unfolding cord 20 and ascends along the rafter 3 and the guide shaft 10. .

When the motor is stopped when the winding shaft 9 reaches a predetermined position, the lock mechanism of the motor operates. Therefore, at the same time when the motor is stopped, the winding shaft 9
There is no reverse rotation due to its own weight and the tensile force due to the weight.

Then, the drive rod 30 is lifted and the winding shaft 9
The end portion 9a of the winding shaft 9 is locked to the locking metal fitting 10a provided on the guide shaft 10 (see FIG. 7), and the drive rod 30 moves from the end portion 9a of the winding shaft 9
The winding operation is completed by removing the rotating shaft 34.

Next, when the vinyl sheet 6 is unfolded, the rotary shaft 34 is fitted to the end 9a of the winding shaft 9 and removed from the locking metal fitting 10a, and the motor is rotated in the opposite direction. Then, when the winding shaft 9 is rotated in the reverse direction, the winding shaft 9 descends while unrolling the wound vinyl sheet 6 as in the above-described embodiment, and the winding shaft 9 is moved along the rafter 3 and the guide shaft 10. Return to the position. Then, by removing the rotating shaft 34 of the drive rod 30 from the end 9a of the winding shaft 9, the opening / closing operation of the greenhouse is completed.

In the above embodiment, the case of winding the vinyl sheet of the vinyl house has been described.
The present invention is not limited to this. For example, by winding a black cloth for the sunshade, the sunshades of the tea plantation and the fish farm may be automatically opened and closed. Further, the covering surface to be applied is not limited to the inclined surface as in the above-described embodiment, but may be a flat horizontal surface or an inclined surface drawing an arc. Furthermore, in the above-described embodiment, after the winding motor is unlocked, the vinyl sheet is forcibly peeled and deployed only by the pulling force of the deployment string based on the weight of the rotating shaft and the weight. Alternatively, the unfolding string may be pulled manually.

[0031]

As is apparent from the above description, according to the sheet winding device of the present invention, when the sheet is unfolded, the unfolding cord pulls the winding shaft around which the sheet is wound in the unfolding direction. Forcibly peel off the stuck sheets. Therefore, not only can the seat be deployed smoothly,
It is possible to prevent damage to the sheet and the winding shaft as in the conventional example. Further, according to the present invention, since the deploying cord is pulled by the weight, the winding shaft around which the sheet is wound can always be pulled by a constant pulling force. Therefore, the winding shaft can be rotated with a constant rotational force, and the sheet can be completely developed even in the final stage of rewinding. Further, even when the tensile force with respect to the winding shaft is changed according to the conditions of the greenhouse to be applied, the tensile force can be changed simply by increasing or decreasing the weight, so that replacement and adjustment work of parts does not take time and effort. Therefore, there is an effect that it is easy to finely adjust the tensile force with respect to the winding shaft, which is performed according to variations in assembly accuracy and changes with time.

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment of a sheet winding device according to the present invention.

FIG. 2 is a main part perspective view showing a first embodiment of a sheet winding device according to the present invention.

FIG. 3 is a perspective view of an essential part showing a second embodiment of the sheet winding device according to the present invention.

FIG. 4 is a perspective view of an essential part showing a third embodiment of the sheet winding device according to the present invention.

FIG. 5 is a perspective view of a main part of a fourth embodiment of the sheet winding device according to the present invention.

FIG. 6 is a perspective view of an essential part showing a drive rod used in a fourth embodiment of the sheet winding device according to the present invention.

FIG. 7 is a perspective view of an essential part showing a locking means used in a fourth embodiment of the sheet winding device according to the present invention.

[Explanation of symbols]

3 ... barrel, 4 ... girder material, 5 ... ridge wood, 6 ... vinyl sheet, 9 ... winding shaft, 10 ... guide shaft, 20 ... deployment string, 2
1, 24, 28 ... winding drum, 22 ... weight, 23 ... string,
25a ... 1st pulley, 25b ... 2nd pulley, 25c ... 3rd pulley, 25d ... 4th pulley, 25e ... pulley.

Claims (3)

(57) [Scope of utility model registration request] 1. A sheet which covers both ends of a plurality of vertical members which are arranged in parallel by a lateral member to form a covering surface, and which is one of the lateral members forming the covering surface, of the sheet covering the covering surface. While fixing the edge portion located on one of the transverse members and the edge portion located on the other transverse member to the winding shaft, one end portion of the unfolding string that is pulled in the unfolding direction at the time of unfolding is taken up by the winding shaft. In the sheet winding device that is fixed to the winding roller and winds the sheet together with the sheet, the other end of the unfolding string is fixed to a large-diameter winding drum that is rotatably supported, and is the same as the large-diameter winding drum. A sheet winding device comprising a small-diameter winding drum integrated so as to form an axis, and the other end of a string having a weight suspended at one end thereof is fixed to the winding drum. 2. A sheet which covers the covering surface by connecting both ends of a plurality of vertical members arranged side by side with a lateral member, and which is one of the lateral members forming the covering surface. While fixing the edge portion located on one of the transverse members and the edge portion located on the other transverse member to the winding shaft, one end portion of the unfolding string that is pulled in the unfolding direction at the time of unfolding is taken up by the winding shaft. In the sheet winding device, which is fixed to the other side member for winding the sheet together with the sheet, the other end of the expansion string is attached to the other lateral member via a first pulley attached to the other lateral member, and A second pulley is arranged in an intermediate portion of the deploying cord located between the other end of the cord and the first pulley, and the one lateral member is a cord whose one end is fixed to the second pulley. Suspending the weight so that it can move up and down via the third pulley attached to the Sheet take-up device, characterized in that the. 3. A cover member is formed by connecting both ends of a plurality of vertical members arranged side by side with a horizontal member, and one of the horizontal members forming the cover surface among the sheets covering the cover surface. While fixing the edge portion located on one of the transverse members and the edge portion located on the other transverse member to the winding shaft, one end portion of the unfolding string that is pulled in the unfolding direction at the time of unfolding is taken up by the winding shaft. A sheet winding device that winds the sheet together with the sheet, and fixes the other end of the unfolding string to a winding drum that is rotatably supported by the other lateral member. A sheet winding device, wherein a weight is movably suspended from an intermediate portion of the deployment cord located between the other end of the deployment cord and the other lateral member via a pulley so as to be vertically movable.