JPS6142367Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an opening/closing device for tunnel covering for plant cultivation.

Conventional tunnels of this type are curved into an arc, and a sheet-like member is placed over a plurality of pillars that are erected in parallel, and the sheet members are tied to the pillars using strings to prevent them from being turned over by the wind. . Therefore, when the tunnel is used for example to prevent frost damage, it is necessary to cover the tunnel with a sheet at night and remove it in the morning. However, with the conventional methods mentioned above, it is troublesome and time-consuming to attach and remove the sheet.
In addition, the removed sheet had to be left lying on the ground, which not only caused it to become soiled with dirt but also to become tangled, requiring a lot of effort to unfold it again.

This invention solves the above problems; the sheet does not need to be removed, opening and closing is easy and hassle-free, has high wind resistance, has a buffering effect against wind, and is a safe tunnel. The purpose of the present invention is to provide a covered switchgear.

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

In Figures 1 to 3, tunnel A is formed along the ridges of a field. That is, a plurality of pillars 1 made of round rods curved into an arc shape are erected in parallel along the length direction of the ridge. A holding member 2 is attached to the lower part of one end of these columns, and a weight member 3 is attached to the seat 4 at the other end. Therefore, the holding member 2
A cylindrical main body 21 that is externally mounted on the support 1, an L-shaped seat support portion 22 that protrudes from one side of the main body 21, and a set screw 23 that is screwed into the other side of the side wall of the main body 21. , and a seat attachment ring 24 projecting above one side of the main body 21. The holding member 2 is movable on the support column 1 and is screwed and fixed as appropriate.

The weight member 3 consists of a main body 31 that is loosely fitted onto the support 1 and can freely slide on the arcuate portion and the other end portion of the support, and a ring 32 that projects above the main body 31.

A flexible sheet-like member (hereinafter referred to as a sheet) 4 such as a vinyl sheet or a net is stretched between the plurality of holding members 2 and the weight member 3. The sheet-like member 4 is long along the ridge direction and has a tunnel-forming width, and has rings 24 at both ends in the width direction.
and the ring 32 using a string or the like.

Incidentally, reference numerals 5 in the first drawing are terminal stakes driven at both ends of the ridge, and the sheet 4 is bound and tightened at the end portions in the longitudinal direction.

In the above, the usage mode will be explained.

When tensioning the sheet 4 at night, etc., it is sufficient to slide the weight member 3 on the support column 1 and slide it to the other end side so that the sheet 4 hangs down. It does not roll over and is expanded in a buffered state. In addition, when opening the seat 4, each weight member 3 is individually attached to the support 1.
By sliding the seat 4 toward one end side and moving it onto the holding member 2, the seat 4 is folded while sliding on the support 1, and this slack portion is held on the outside of the support on the L-shaped portion of the seat support 22. Ru. Therefore, the slack portion of the sheet 4 is safely held without hitting the plants. The longitudinal end portions of the sheet are opened and closed in a fan-like manner using the end stakes 5 as key points.

In addition to the above embodiments, the weight member 3 may be one in which a separate weight 3b is attached to a sliding ring 3a as shown in the fourth figure.

Even if a net-like material such as cheesecloth for sunshade is used as the sheet-like member, it can be used in the same manner.

Note that instead of the seat attachment ring 24, a clip 6 is used as shown in FIG. In this clip, two levers 61, 61 are hingedly connected via a hollow pin 62, and one of the gripping parts 63, 63 provided at the tips of the levers has a convex part 63a and the other has a concave part 63b. , and the clamping portion is biased in the closing direction by a spring 64. The clip 6 is rotatably attached to the support portion 22 via the attachment pin 7 passing through the hole of the hollow pin 62. According to this clip, the uneven parts 63a, 63b
This allows the seat to be firmly attached and can be attached and detached with a single touch.

As described above, the present invention has many advantages such as being easy to open and close the covering, requiring no effort, not being affected by wind, and being safe for plants.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a tunnel showing one embodiment of the present invention, Fig. 2 is an enlarged side view of main parts, Fig. 3 is a perspective view of a weight member, and Fig. 4 is a perspective view of another embodiment of the weight member. , FIG. 5 is a partially cutaway front view of another embodiment. A... Tunnel, 1... Support, 2... Holding member, 3... Weight member, 4... Sheet member, 5
...terminal stake, 6...clip.

Claims (1)

[Scope of utility model registration request] A plurality of pillars curved in an arc shape and erected in parallel, a holding member fitted to the lower part of one end of these pillars, and a weight member slidable along the pillars;
An opening/closing device for covering a plant culture tunnel, comprising a flexible sheet-like member stretched between the holding member and the weight member.