JPH0246678Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a flexible sheet opening/closing device for opening the side wall portion for ventilation in a greenhouse, particularly in a semicircular vinyl greenhouse.

<Prior art and its problems> In general, a semicircular vinyl house is constructed by sticking pipe material 101 bent into a substantially semicircular shape into the ground at regular intervals, and then passing the pipe material 102 through the ridge part, as shown in Fig. 7. are constructed and each pipe material 101... is fixed. Then, pipe materials 103, 103 are constructed and fixed in the same manner as the pipe material 102 in the upper part of the side wall corresponding to the girder, and the pipe materials 103, 103 for the girder on the side wall surface are
3, one side edge of the side sheets 104, 104 is fixed, and the other side edge is fixed with a winding pipe material 105, 105 so as to hang down. The upper part constituting the roof is covered by fixing both side edges of the ceiling sheet 106 to pipe materials 103, 103 for both side girders. Furthermore, mica wires 10 are placed at appropriate intervals.
7... is stretched from the outside of the sheet.

When ventilating the room in a greenhouse configured in this way, the side sheets 104, 104 are rolled up using the winding pipe material 105, and the side wall portions are opened.

In addition, when closing the side wall part, the pipe material 10
5, Rotate the 105 in the opposite direction and install the side screen 1.
Rewinding 04,104.

However, when winding up the sheets 104, 104 using the pipe materials 105, 105 to open the greenhouse side wall, when the pipe materials 105, 105 are rotated in the winding direction, the hanging ends of the sheets 104, 104 are rolled up; When the pipe materials 105, 105 are reversely rotated to close the sheets 104, 104, the wound portions of the sheets 104, 104 are sandwiched between the mica wires 107... and the pipe materials 101... and the side wall portions are smoothly closed. Closing is not done. In addition, in this state, that is, in an unclosed state, the pipe material 105,
When the rotation of the sheet 105 in the unwinding direction is continued, a slack is formed in the sheets 104, 104 due to the unwinding, and this slack portion becomes the sheet 10.
4, 104 and was caught and wound up, causing a problem.

<Means for solving the problem> The present invention was proposed in order to solve the above-mentioned drawbacks, and it is possible to press the outer covering sheet of a greenhouse from the outside and use a simple structure even if mica wire is present. The object of the present invention is to provide a seat closing device that is large and easy to operate, and that does not cause any trouble in opening and closing the seat.

The above purpose is to provide an opening/closing device for a flexible sheet for a greenhouse that is stretched as an outer covering, etc., in which one end of the flexible sheet is fixed to the framework of the greenhouse, the other end is a free end, and a pair of links are attached to the free end. The joints of the material are fixed, and one end of the link member is connected to each of two traction members that are disposed substantially parallel to the free end of the sheet and are movable in forward and reverse directions, and the traction members are connected to each other. This is achieved by a greenhouse flexible sheet opening/closing device configured to open and close the flexible sheet by moving the flexible sheet in forward and reverse directions.

<Example> Hereinafter, the present invention will be explained based on an example shown in the drawings.

FIG. 1 shows an example of a greenhouse in which the present invention is implemented.

In this greenhouse 1, pipe materials 2 bent into a substantially semicircular shape are stuck into the ground at regular intervals, pipe materials 3 are installed through the ridge, and each pipe material 2 is fixed. Pipe materials 4, 4 are constructed and fixed in the same manner as the pipe material 3 on the girder part at the upper part of the side wall.

One side edge of side sheets 5, 5 made of flexible sheets is fixed to the pipe materials 4, 4,
The other side edges of the sheets 5, 5 are suspended downward.

The upper part constituting the roof has both side edges of the ceiling sheet 6 fixed to the pipe material 4, and is arranged so as to cover the upper part of the frame material of the greenhouse. Then, mica wires 7 are placed at appropriate intervals to prevent peeling and stirring of the sheet.
is stretched from the outside of the sheets 5, 5, and 6.

Reference numeral 8 denotes a rope for a traction member that is stretched in a loop shape outside the greenhouse 1 and near the girder pipe material 4.

The rope 8 is wound around a drive drum 9 and a pulley 10 disposed at the end of the greenhouse 1, and can be reciprocated in the direction of the greenhouse girder by rotating the drive drum 9 forward and backward. It is configured.

In order to support the drive drum 9 and pulley 10, they may be provided separately from the constituent members of the greenhouse 1 as shown in the figure, but it is of course also possible to use pipe materials 2, etc. that are the frame material of the greenhouse 1. be.

A pair of link members 11 and 12 are arranged between the lower edge of the sheet 5 and the rope 8 with appropriate spacing therebetween.

Both ends of the link members 11 and 12 are rotatably connected to the sheet 5 and the rope 8, and the fixed sides of the rope 8 are fixed to the sides in which the rope 8 runs in different directions.

Therefore, when the driving drum 9 is rotated in the direction shown by the arrow in FIG.
a and 12a are separated from each other, and the fixed portion 5a on the seat 5 side is pulled up. Conversely, when the drive drum 9 is operated in the direction opposite to the arrow, the fixed parts 11a, 1
2a is approached, and the fixed portion 5a on the seat 5 side is lowered.

By this operation, the lower edge of the seat 5 is moved up and down, and the side walls of the greenhouse 1 are opened and closed.

In FIG. 2, cross members 13 are provided near both sides of the fixed portions 5a of the link members 11 and 12 in order to allow the lower edge of the sheet 5 to be opened and closed substantially uniformly over the entire area. An example is shown.

Note that the cross member 13 is not limited to this example, and may be one that is continuous over the entire lower edge of the sheet 5.

FIG. 3 shows an example in which a pinch member 14 is provided at the joint fixing portion 5a of the link members 11 and 12, protruding inside the greenhouse 1 to prevent the sheet 5 from being unturned when pulled up. has been done.

Note that this pinch member 14 is not limited to being provided only at the fixed portion 5a, but may be a horizontal member that is continuous over the entire lower edge of the cross member 13 and the sheet 5 shown in FIG. They may be placed at appropriate locations on the cross member at predetermined intervals, or they may be continuous along the cross member, or may be formed integrally with the cross member instead of being independent. Of course.

In the above embodiments, a rope stretched in a loop shape is used as the traction member, but the present invention is not limited to this, and may also include a chain or a hard bar.

When a chain is used, a sprocket is provided in place of the drum 9 and pulley 10. In the case of a hard bar, the part where the pulley 10 is provided is a support member that supports the bar in a slidable manner, and the drive part is provided with a track carved into the bar and a pinion that meshes with the rack. do.

Alternatively, the traction member may be constructed by appropriately combining the rope 8, a chain, and a hard bar.

Furthermore, as shown in FIG. 4, it is preferable to provide a support 15 in the frame material for constructing the greenhouse 1 in the middle of the traction member to prevent the traction member from deflecting.

FIG. 5 shows another embodiment of this support 15.

This support 15' is made up of two plates bent into a substantially S-shape, which are rotatably pivoted at the center so that they are symmetrical to each other, and include a support part 15a and a pipe holding part 15b. is formed. Support part 1
A bolt 15c is provided at the tip of the piece forming 5a so that the distance between the pieces facing each other can be adjusted.

When the bolt 15c narrows the spacing on the side of the support part 15a, the spacing on the side of the clamping part 15b is narrowed, and conversely, when the spacing on the side of the support part 15a is widened, the clamping part 15b also widens.

In order to install this support 15' in a greenhouse, a fixing pipe material 16 is arranged and fixed parallel to the girder pipe material 4 and outside the greenhouse 1, and this pipe material 16 is
They are clamped and fixed by the clamping portions 15b at appropriate intervals.

The seat opening/closing device of the present invention is not limited to semicircular vinyl houses as in the above embodiment, but can also be used to open and close ventilation sections on the side walls of roof-type vinyl houses, or to block light inside and outside of greenhouses.・Of course, it can also be applied to opening and closing sheets stretched for heat insulation.

In addition, when the opening and closing width of the seat to be opened and closed is considerable, as shown in FIG. 6, link members 11'...
Each link material
The intersecting center and both ends of 1'...12' are rotatably connected. If you configure the link material in this way,
The traveling distance of the traction member can be shortened, and when multiple sets of link materials are provided, adjacent ones can be placed in close proximity, and the advantages are that the link materials do not come into contact with each other and cause problems. be.

<Effects> The present invention has a simple structure in which a link member, one end of which is fixed to the free end of a flexible sheet, is pivotally attached to a traction member movable in forward and reverse directions, and is easy to operate by simply moving the traction member. The flexible sheet can be opened and closed.

Furthermore, when the flexible sheet is closed, the link material forcibly closes the flexible sheet, so that the sheet can be closed reliably without the problems caused by mica wires as in the conventional method.

[Brief explanation of the drawing]

Fig. 1 is a partially omitted cross-sectional perspective view of a greenhouse showing one embodiment of the present invention, Fig. 2 is a side view of essential parts of a greenhouse showing another embodiment, and Fig. 3 is a greenhouse showing still another embodiment. 4 is a perspective view showing one embodiment of the support for the traction member, FIG. 5 is a perspective view showing another embodiment of the support, and FIG. 6 is a perspective view of another embodiment of the link material. FIG. 7 is a front view showing an example, and FIG. 7 is a partially omitted cross-sectional perspective view of a greenhouse showing a conventional example. 1... Greenhouse, 2, 3, 4... Pipe material, 5, 6
... Sheet, 7 ... Mica wire, 8 ... Rope, 9
... Drive drum, 10 ... Pulley, 11, 12, 1
1', 12'... link material.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. In an opening/closing device for a flexible sheet for a greenhouse stretched as an outer cover, etc., one end of the flexible sheet is fixed to the frame material of the greenhouse, the other end is a free end, and the free end fixing joints of a pair of link members, and connecting one end of each of the link members to each of two traction members that are disposed substantially parallel to the free end of the sheet and are movable in forward and reverse directions; An opening/closing device for a flexible sheet for a greenhouse, which is configured to open and close the flexible sheet by moving the traction members in forward and reverse directions. 2. The opening/closing device according to claim 1, wherein the traction member is a rope stretched in a loop shape.