JPH0432932Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention relates to a sheet fixing device, and particularly to a sheet suitable for use when spreading a hard synthetic resin sheet on the roof, wall, gable, etc. of a greenhouse. The present invention relates to a fixing device.

[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, lowering the transmittance of sunlight, and dirt easily adheres to the outside surface due to the characteristics of the material. Due to problems, the seats have to be replaced every year. For this reason, reupholstering the sheet is troublesome,
It was also 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.Using this hard sheet can eliminate the above problems. It is known that the problem can be solved, and its use has been desired for many years.

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. Put it away.
Moreover, if you use it while these wrinkles and cracks remain,
The entire sheet may flap or turn over and break due to strong winds, etc. Therefore, it has not been possible to actually stretch a rigid sheet.

However, recently, the present applicant has developed a sheet fixing device that is good for fixing hard sheets that does not cause wrinkles and prevents cracks (Utility Application No. 61-21933).
issue).

This sheet fixing device consists of a support frame with a narrow opening, a sheet holding member provided with a cover body and a pair of support pieces, and a wedge.The sheet is inserted into the support frame through the support pieces, and In this state, a wedge is driven between the pair of support pieces to spread the support pieces toward the inner wall of the support frame, and the sheet is held between the support pieces and the support frame.

[The problem that the idea attempts to solve]

However, the sheet fixing device described above is quite long because the support frame is installed along the haze and ribs of the greenhouse, and the sheet holding member that holds the sheet on the support frame becomes long.
Driving a wedge along this long sheet holding member creates a large frictional resistance and the axes do not coincide.

Therefore, the work of fixing the sheet is difficult and the workability is extremely poor. Moreover, this fixing device has three members including a support frame, a sheet pressing member, and a wedge, and has a large number of parts, a complicated structure, and is disadvantageous in terms of cost.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a sheet fixing device that is effective for fixing hard sheets, has a small number of parts, has a compact structure, and has a significantly improved sheet fixing operation.

[Means to solve the problem]

In order to achieve the above object, the structure of the present invention consists of a support frame with a narrow opening and a sheet holding member for fitting the sheet into the support frame, and the sheet holding member is provided on a plate part and the plate part. The stacked sheets are fixed in the support frame via the sheet presser member and are stretched in opposite directions, while one sheet presses down the sheet presser portion of the sheet presser member. It is characterized by being

[Effect]

One end of the plate part is inserted into one groove of the support frame, and the sheet presser comes into close contact with the vicinity of the edge of the opening of the support frame, and at this time, the sheets are overlapped in double form by the support frame and the sheet presser. Hold the overlapped parts. Each sheet is pulled out from one end of the plate section and stretched in opposite directions, and one sheet presses the sheet presser toward the support frame.

The plate part presses the end portion and the sheet presser part against the support frame side by its restoring force, and the sheet presser member is strongly fixed in the support frame while holding the overlapped portion of the stacked sheets.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

1 to 3 show a sheet fixing device according to an embodiment of the present invention.

This consists of a support frame 1 with a narrow opening and a sheet holding member 2.

The support frame 1 includes a bottom portion 3, a pair of both side frames 4 and 5 that stand up in an inclined direction on both sides of the bottom portion 3, and curls 6 and 7 provided on the tops of the both side frames 4 and 5.
It consists of a pair of dovetail grooves 8, 8 which are grooves provided between the bottom part 3 and both side frames 4, 5, and the opening between the curls 6, 7 is narrower than the width of the bottom part 3.

The sheet presser member 2 consists of a plate portion 10, a curved thick wall portion 11 provided on the left side of the plate portion 10, and a sheet presser portion 12 provided on the right side.
The legs 13a, 1 are double bent downwards.
3b and a sheet holding piece 14 which extends in the lateral direction and is slightly curved.

A curved surface corresponding to the outer surface of the curl 7 on the support frame 1 is formed on the side portion of the leg portion 13b.

Since the leg portions 13a and 13b are formed by double bending, they are highly elastic, and the sheet pressing member 2 can be fitted into the support frame 1 more strongly. Legs 13
a and 13b may be folded three times or more.

When the hard sheet 16 is inserted into the support frame 1 and clamped, the process is as follows.

An overlapping portion 16 of sheets formed by folding and overlapping a single sheet 16 on the support frame 1
a and 16b, and then press the overlapped portion 16 of the sheet through the thick portion 11 which is the end of the sheet pressing member 2.
Insert part of a into the dovetail groove 8 on the left side of the support frame 1. At this time, the sheet pressing member 2 is inclined, and the thick portion 11 temporarily fixes the sheet stacking member 16a in the dovetail groove 8. Next, when the sheet holding part 12, which is the other end of the plate part 10, is struck from above in the direction of the support frame 1, the elasticity of the plate part 10 and the leg part 13 are increased.
The leg portions 13a and 13b fit into the dovetail groove 8 on the right side while pushing the overlapped portion 16a of the sheet against the elasticity of the sheets a and 13b.

At this time, the plate part 10 is subjected to a restoring force that tends to expand laterally due to its own springiness, and this restoring force causes the thick part 11 and the leg parts 13a, 13 to
b are pushed in the lateral direction, and the overlapped portions 16a of the sheets are connected to the inner peripheral surfaces of the frames 4 and 5 on both sides and the dovetail grooves 8,
The sheet pressing piece 14 cooperates with the curl 7 to clamp the overlapped portion 16b of the sheet.

The sheet 16 is pulled outward from the thick part 11 which is one end of the plate part 10 and is stretched in opposite directions to each other on the left and right sides. In the figure, one of the sheets stretched to the right is pressed against the sheet holding part 12, especially the sheet holding part 12. Presser piece 1
4 and presses down this sheet presser piece 14. The sheet 16 has a curl 6 and a sheet presser piece 14
Because it is supported evenly by the lining, wrinkles and unevenness do not occur in this area.

In the sheet fixing operation described above, first insert the thick part 11, which is the end of the plate part 10, into the dovetail groove 8 on the left side while pushing the overlapping part 16a of the sheet, and then manually or The overlapping part 16a of the sheet can be removed by simply tapping it with a hammer etc.
is fixed within the support frame 1, so work efficiency is significantly improved. If the support frame 1 and the sheet presser member 2 are long, it is sufficient to successively tap the sheet several times along the sheet presser member 2.

FIG. 3 shows a perspective view of a greenhouse B equipped with the sheet fixing device of the present invention.

Greenhouse B has a large number of arched pipes 17 erected,
A hard sheet 16 is spread over this pipe 17.

A plurality of support frames 1 are horizontally installed between the respective pipes 17, and are fixed to the support frames 1 via sheet pressing members 2.

Generally, a soft sheet 18 is spread out in the lower part of the greenhouse B, and when this soft sheet 18 is rolled up via a winder 19, an opening 20 for ventilation is usually formed. As in, sheet 16
It may also be used by winding up one end with the winder 19.

FIG. 4 shows another embodiment of the present invention, in which the leg portions of the sheet pressing member are modified. This comprises a support frame 1 and a sheet holding member 20, and the support frame 1 is the same as the support frame of the embodiment shown in FIG.

The sheet pressing member 20 is composed of a curved thick wall portion 22 provided on the left side of the plate portion 21 and a sheet pressing portion 23 provided on the right side. It is composed of an elongated and slightly curved sheet holding piece 25.

A curved surface corresponding to the outer surface of the curl 7 on the support frame 1 is formed between the leg portion 24 and the sheet holding piece 25, and the leg portion 24 is formed between the inner peripheral surface of the frame 5 on both sides and the inner surface of the dovetail groove 9. It is bent in a shape along the circumferential surface.

When the hard sheet 16 is inserted into the support frame 1 and held therebetween, it is carried out in the same manner as in the embodiment shown in FIG.

Place the overlapping sheet portion 16a of the sheet 16 on the support frame 1, and insert a part of the overlapping sheet portion 16a into the dovetail groove 8 on the left side of the support frame 1 via the thick portion 22 that is the end of the sheet pressing member 20. .
At this time, as shown by the dotted line in FIG. 4, the sheet pressing member is inclined, and the thick portion 22 temporarily fixes the overlapped portion 16a of the sheet within the dovetail groove 8.

Next, as shown by arrow A, the sheet holding part 23, which is the other end of the plate part 21, is pressed onto the support frame 1 from above.
When the sheets are folded inward, the legs 24 push the overlapped portion 16a of the sheet against the elasticity of the plate portion 21 and the elasticity of the legs 24, and fit into the dovetail groove 9 on the right side.
At this time, a restoring force is applied to the plate part 21 that causes it to spread laterally, and this restoring force causes the thick part 22 and the leg part 2 to
4 are pushed in the lateral direction, and the overlapped portions 16a of the sheets are connected to the inner peripheral surfaces of the frames 4 and 5 on both sides and the dovetail grooves 8,
9 and clamp it in cooperation with the support frame 1.

Moreover, since the thick portion 22 and the leg portion 24 can be bitten into each other, they do not protrude upward.

The sheet pressing piece 25 cooperates with the curl 7 to clamp the overlapped portion 16b of the sheet. In the above-described sheet fixing operation, first insert the thick part 22, which is the end of the plate part 21, into the dovetail structure 8 on the left side while pushing the overlapping part 16a of the sheet, and then manually or manually press the sheet holding part 23 from above. Since the overlapping portion 16a of the sheet is fixed within the support frame 1 by simply tapping it with a hammer or the like, work efficiency is significantly improved. The sheet 16 is pulled out from the end of the plate portion 21 and stretched in opposite left and right directions.

The sheet 16 stretched on the right side is along the upper part of the sheet pressing member 20. While in contact with the sheet presser piece 25, the sheet presser piece 25 is pressed against the support frame 1 side using tension.

FIG. 5 shows another embodiment of the present invention, in which two sheets 26, 26 are overlapped at their ends.

That is, in the embodiments shown in FIGS. 1 and 4, a portion of one sheet 16 is folded double to form an overlapping portion 1.
6a, 16b and fix these parts. However, in the embodiment shown in FIG. It is something that can be expanded upon.

That is, the ends of the two sheets 26, 26 are overlapped in advance, and the overlapping members 26a, 2
6b is fixed and expanded in the same manner as in the embodiment of FIG.

When two sheets 26, 26 are stacked, it is possible, for example, to use one sheet as a hard sheet and the other sheet as a soft sheet.

[Effect of idea]

According to the present invention, the following effects can be obtained.

The end of the plate part and the sheet holding part are pushed sideways by the elastic restoring force generated from the plate part, so they tend to bite into the support frame.
The sheet pressing member does not come off from the support frame and cooperates with the support frame to securely fix the sheet.

Insert the end of the plate into one of the grooves of the support frame, and then tap the sheet presser from above, and the legs of the sheet presser will fit into the groove.
There are two fixing processes, which significantly improves fixing work.

Since it is composed of only two parts, the support frame and the seat holding member, the number of parts is small, the structure is compact, and costs can be reduced.

One of the sheets pulled out comes into contact with the sheet pressing member, particularly the sheet pressing portion, and is pressed downward by the tension, so that the sheet pressing portion can be more strongly prevented from coming off.

When two sheets are stacked and the overlapped portion is fixed, the two sheets of different materials can be spread out, and for example, one sheet can be used as a hard sheet and the other sheet can be used as a soft sheet.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a sheet fixing device according to an embodiment of the present invention, FIG. 2 is a perspective view of the sheet fixing device shown in FIG. 1, and FIG. 3 is a perspective view of the sheet fixing device used in a greenhouse. 4 and 5 are cross-sectional views of a sheet fixing device according to another embodiment. 1... Support frame, 2... Sheet pressing member,
10, 21... Plate part, 12, 23... Sheet pressing part, 16, 26... Sheet, 16a, 26a...
Overlapping parts of sheets.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) Consists of a support frame with a narrow opening width and a sheet holding member for fitting the sheet into the support frame, and the sheet holding member includes a plate portion and a sheet provided on the plate portion. The overlapping portion of the stacked sheets is fixed in the support frame via the sheet pressing member, and each sheet is pulled out from one end of the plate portion and stretched in opposite directions. A sheet fixing device characterized in that one sheet is pressed against the sheet pressing section. (2) The sheet fixing device according to claim (1), wherein a portion of one sheet is folded back to form a two-layered sheet, and the folded portion is fixed within a support frame via a sheet pressing member. (3) The sheet fixing device according to claim (1), wherein the ends of the two sheets are overlapped and the overlapped portion is fixed within the support frame via a sheet pressing member.