JPH0210924Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention is a greenhouse in which a transparent or translucent synthetic resin sheet is spread, and when a part of the sheet is sagging, this sagging part is pushed up. The present invention relates to a sheet sag corrector that corrects the entire sheet to the same level, and is particularly suitable for hard sheets.

[Conventional technology]

In general, a pipe house, which is a greenhouse made of soft synthetic resin sheets, such as vinyl chloride resin sheets, is constructed by erecting a large number of arch-shaped pipes underground, and constructing a sheet support frame with a narrow opening between each pipe. The synthetic resin sheet is held in place via elastic locking lines, and this allows the sheet to be spread over the roof, walls, and gables of the pipe house.

In the case of the above-mentioned soft sheet made of vinyl chloride resin, since it is stretchable, sufficient tension is obtained when it is held on a support frame with a locking line, and it is spread uniformly over the entire pipe house.

However, when this soft sheet is stretched, there is a problem that the sheet itself has poor durability and deteriorates during long-term use, causing cracks or breakage.

Furthermore, greenhouses need to allow sufficient sunlight to pass through, but in the case of the above-mentioned soft sheets, they change color during use, reduce the transmittance of sunlight, and dirt easily adheres to the outside surface due to the material characteristics. Due to problems, the seats have to be replaced every year.
For this reason, the work of re-upholstering the sheet was troublesome and was economically disadvantageous.

On the other hand, hard synthetic resin sheets such as polyester resin sheets are also known, which are durable, resistant to discoloration, and have good sunlight transmittance.If this hard sheet is used, the above problems can be avoided. It is known that the problem can be solved, and its use has been desired for a long time.

However, this hard sheet has poor elasticity, high rigidity, and is relatively thick, so it cannot be fixed using conventional sheet fixing devices, and if you try to force it to fix it, wrinkles or cracks may occur. In many cases, it was not possible to expand the rigid sheet.

However, recently, the applicant has not developed wrinkles. Developed a sheet fixing device that is good for fixing hard sheets and prevents cracks (Utility Application No. 61-39198)
issue).

[Problem that the invention attempts to solve]

However, although this sheet fixing device can hold the sheet uniformly and prevent wrinkles and cracks from forming, the rigid sheet itself can only be held partially along the sheet fixing device, and the entire sheet is stretched and tensioned. As a result, the problem remained that the portions not holding the sheet sagged downward.

When the sheet sag downward, problems occur such that rainwater collects in that part, dirt accumulates, or it gets blown around by the wind.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a sheet sag corrector that pushes the sheet upward while applying tension when the stretched sheet sag.

[Means for solving problems]

In order to achieve the above object, the structure of the present invention is characterized in that a handle provided with a hook portion and a push-up portion extending from the hook portion in a direction opposite to the handle are integrally molded.

[Effect]

When the hook part is inserted into the pipe and the handle is rotated to a predetermined position, for example, a vertical position, the push-up part stands up, and this push-up part pushes up the support plate that supports the seat to correct the sagging of the seat.

〔Example〕

An example of implementing the present invention will be described below based on the drawings.

FIG. 1 shows an embodiment of a sheet sag corrector made by bending and integrally molding a long and narrow plate.

This correction tool 1 consists of a hook part 2 bent into a U-shape for inserting a pipe, a handle 3 extending from the hook part 2 in one direction, and a push-up part 4 extending from the hook part 2 in the opposite direction to the handle 3. ing.

The handle 3 extends in one direction from the hook part 2 and is slightly inclined from the middle, and the curled part 3a at the lower end is located on the same line as the rising part 4a of the push-up part 4.

The push-up part 4 has a vertical rising part 4a, a horizontal locking part 4c, and a curved guide 4b provided at the outer end of the locking part 4c.

Next, we will discuss the usage conditions.

FIG. 4 shows a greenhouse in which a hard sheet 6 is spread.
In this greenhouse, the slack portion of the hard sheet 6 is corrected using the correction tool 1 of the present invention.

The greenhouse stands upright with a large number of pipes 7 in an arch shape, and a hard sheet 6 is spread over the pipes 7 via a fixing device 8 for the hard sheet. Fixing device 8
As shown in FIGS. 4 and 6, there is a sheet support frame 9 with a narrow opening extending between each pipe 7, and a sheet holding cover 11 that fits while pushing the sheet 6 into the support frame 9. , cover 11
The supporting legs 12, 12 of the cover 11 are driven into the support legs 12,12 of the cover 11.
The rigid sheet consists of a wedge 13 that presses the support frame 8 against the inner wall of the support frame 8.
It is held uniformly between the two.

However, when the sheet 6 is hard as described above, even if the sheet 6 is held by the support frame 8, wrinkles or cracks will not occur in the holding portion, but the sheet 6 has poor elasticity and the fixing device 8
If you only use a chisel, you won't be able to pull it enough and you won't be able to apply tension. For this reason, the portions not held by the fixing device 8, in other words, the portions A, B, and C above the pipes sag downward.

Therefore, the present invention attempts to push up the sagging portions A, B, and C of the sheet.

That is, as shown in FIGS. 2 and 3, a groove frame 14 serving as a sheet support material is placed between each pipe 7 and the sheet 6 in a direction that crosses the pipe 7, and then the pipe 7 and the groove frame 14 are placed between each pipe 7 and the sheet 6. Insert the correction tool 1 from the horizontal direction through the handle 3 between the
is inserted into the pipe 7, the push-up part 4 is opposed to the groove 15 of the groove frame 14, and the handle 3 is then rotated clockwise to a predetermined position, for example, a vertical position. At this time, the correction tool 1 rotates clockwise around the pipe 7, and the push-up part 4 is pushed into the groove 15 via the guide 4b.Moreover, the push-up part 4 stands up, so that the height of the rise part 4a is equal to the groove. frame 1
4, and accordingly push up the sheet 6 whose upper surface is sagging in the groove frame 14 while tensioning it.
This applies tension to the sheet 6, and sag is corrected to a uniform height.

On the other hand, tension is generated in the sheet 6 at this time, and this tension pushes the groove frame 14 downward, and the correction tool 1 is pressed against the pipe 7 by this pushing force, so that the correction tool 1 does not fall.

Since the push-up part 4 is provided with a wide horizontal locking surface 4c that comes into contact with the upper surface of the groove 15, the groove frame 14 is also stabilized, and the locking surface 4c uniformly supports the sheet 6 and the groove frame 14 as a whole.

The groove frame 14 is a frame developed to hold a soft sheet and remove water droplets condensed on the sheet, and is used as a sheet support material in the present invention. When using this groove frame 14
The water droplets condensed on the lower surface of the sheet 6 are transmitted to the water droplet guide piece 14a extending from the water droplet guide piece 14a,
The water droplet is caused to fall into the ground within the greenhouse via this water droplet guide piece 14a.

Since the push-up portion 4 is formed of an elongated plate, it has a large spring effect, and when an external force such as wind pressure is applied to the sheet 6, it has the effect of absorbing and relieving this external force. In order to produce the same spring effect, it is possible to use a wire rod integrally molded as shown in Fig. 7. This has a handle 3' provided with a hook portion 2', and a push-up portion 4' consisting of a rising portion 4a', a guide 4b', and a locking portion 4c'.

FIG. 5 shows another embodiment of the present invention, which is a correction tool formed into a plate shape.

That is, this correction tool 10 consists of a handle 30 having a hook part 20, and a thick push-up part 40 extending above the hook part 20 in the opposite direction to the handle 30, and the push-up part 40 is parallel to a curved surface 40b serving as a guide. The pipe 7 is inserted into the hook part 20, and the handle 30 has a locking surface 40c and a rising part 40a.
When rotated, the push-up section 40 stands up vertically and pushes up the sheet 6 via the groove frame 14.

FIG. 8 shows another embodiment of the present invention, in which a support frame 9 with a narrow opening is used as the seat support material. In this case, it is preferable to use a corrector having a width that is approximately the same as the width of the support frame 9. However, it goes without saying that the above-mentioned materials may also be used.

Similarly, FIG. 9 shows an embodiment in which a horizontal plate 16 is used as the seat support material. Use the correction tool described above.

The correction tool of the present invention is most suitable for correcting sagging in hard synthetic resin sheets with poor elasticity, but it can also be used to correct sagging in soft sheets for some reason. Needless to say, it can also be used.

[Effect of idea]

According to the present invention, there are the following effects.

Just by rotating the handle and raising the push-up part vertically, the sagging of the sheet can be corrected, significantly improving work efficiency.

Even if the heights of the pipes are different, the sagging of the sheet can be corrected even after the greenhouse is formed without adjusting the height of the pipes.

The structure of the correction tool itself is simple and easy to mold.
Can be manufactured cheaply.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a seat sag corrector according to an embodiment of the present invention, Figs. 2 and 3 are perspective views and cross-sectional views showing the operation in use, and Fig. 4 is a modification of Fig. 1. FIG. 5 is a perspective view of a sheet sag correction device according to another embodiment, and FIG. 6 is a cross-sectional view of a rigid sheet fixing device. 7 is a perspective view of another embodiment of the correction tool, FIG. 8 is a perspective view of an embodiment using a support frame with a narrow opening as a seat support, and FIG. 9 is a seat support. FIG. 3 is a perspective view of an embodiment using a horizontal plate as the material. 1, 1', 10... correction tool, 2, 2', 20...
Hook part, 3, 3', 30...Handle, 4, 4', 4
0...Pushing part.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A sheet sag corrector formed by integrally molding a handle provided with a hook portion and a push-up portion extending from the hook portion in the opposite direction to the handle. (2) The seat sagging corrector according to claim 1, wherein the hook part, handle, and push-up part are formed by integrally bending a plate material. (3) Utility model registration claim No. 1 in which the hook part and the push-up part are formed of one common plate.
Sheet sag corrector as described in section. (4) Utility model registration claim No. 1 in which the hook part, handle, and push-up part are integrally molded from wire material.
Sheet sag corrector as described in section. (5) The push-up portion has a long horizontal surface and a curved guide surface connected to the horizontal surface.
Sheet sag corrector as described in section. (6) The sheet sag corrector according to claim 1, wherein the sheet is a hard polyester resin sheet.