JPH026768Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> This invention relates to a covering film tensioning fitting used when a covering film is extended outside the frame of a pipe house such as an agricultural greenhouse.

<Prior art> In order to stretch a covering film on the outside of a pipe house frame, one edge of the covering film is firmly fixed to the frame by an appropriate means, and the other edge is gripped. This can be achieved by forcibly displacing the film gripping fitting by some means.

Japanese Utility Model Application Publication No. 58-55455, invented by the present applicant, discloses the following structure regarding this type of tension fitting. In other words, the U-shaped fixing plate that is fixed to the vertical pipe of the pipe house with a stopper has one end edge rounded and curved to create an elongated vertical hole into which a screw member is inserted. A movable member formed with a pair of bent tongues for fixing the film gripping fitting can be freely drawn. The screw member support structure, which is rigid against bending force and consists of elongated vertical holes formed integrally with a U-shaped fixing plate, has a straight roof type in which the stretched film surface is flat and the tensile force of the film is almost parallel to the screw member. There is nothing wrong with House. However,
In cases where the film tensile force is applied at an angle to the axis of the screw member, such as in a semi-cylindrical pipe house,
The screw member support structure, which is rigid against bending force, can actually become a nuisance, generating strong bending stress on the screw member portion directly above the support structure, and often even causing an accident in which the screw member is severed from that portion. Ta.

In addition, with the U-shaped fixing plate fixed to the pipe house frame, the screw members are installed very close to the pipe house frame, so when turning the hexagonal head of the screw member with a spanner, it is difficult to There were also some inconveniences such as difficulty in working smoothly.

<Problems to be solved by the invention> This invention solves problems such as breakage due to bending of the screw member and the inconvenience of turning the hexagonal head with a spanner by improving the screw member support structure. The object is to eliminate the above-mentioned drawbacks.

<Means for solving the problem> In this invention, a mounting seat plate portion that extends outward is bent at the upper end of one side of the U-shaped fixed plate, and a screw member is loosely fitted into this mounting seat plate portion. By drilling through holes and creating a support structure that allows the screw member to tilt freely,
It achieved its intended purpose.

<Operation> The screw member support structure of this invention, in which the screw member loosely fits into the through hole of the mounting seat plate, allows the screw member to be tilted parallel to the direction in which the film tension is applied. Since it can be changed to , it acts so as not to generate bending stress on the screw member. In addition, the mounting seat plate, which is bent at the upper end of one side of the U-shaped fixing plate, has a long proximal end so that it exhibits sufficient resistance against the force transmitted through the screw member. do. The overhanging structure of the mounting seat plate portion makes it easy to locate the screw member at a position away from the vertical pipe.

<Example> This invention will be described in detail with an example shown in the drawings.
It is as follows.

In Fig. 1, 1 is a U-shaped fixing plate, 2 is a mounting seat plate formed by bending the upper end of one side of the U-shaped fixing plate 1 so as to project outward, and 3 is a hole bored in the mounting seat plate 2. The through holes 4, 4 are fastener mounting holes drilled in the opposing surface of the U-shaped fixing plate 1. After applying this U-shaped fixing plate 1 to the vertical pipe 17 of the pipe house (see Fig. 2), by driving in the stopper 5, which is a screwdriver in this example, the U-shaped fixing plate 1 is fixed to the vertical pipe 17. It will be fixed at The stop 5 may be a bolt nut.

A screw member 6 is inserted into the through hole 3 of the mounting seat plate portion 2 from below. The through hole 3 and the screw member 6 are in a loosely fitting relationship. The head 7 of the screw member 6 comes into contact with the lower surface of the mounting seat plate 2 to prevent it from coming off upward.
If necessary, a compression spring 8 may be provided outside the screw member 6. A nut 9 is screwed onto the upper end portion of the screw member 6, and this nut 9 is fixed by welding so as not to rotate with respect to the movable member 10, which will be described below, or by attaching it to the movable member 10 formed around the movable member 10. The movable member 10 is configured to move up and down linearly along the screw member 6 when the head 7 of the screw member 6 is turned with a spanner or the like after being engaged with the stop prevention portion.

Although not shown in the drawings, the relationship between the head 7 of the screw member 6 and the nut 9 may be completely reversed from that shown in the drawings.

The movable member 10 is formed with bent tongues 11, 11 that can be bent as shown by the dashed line by tightening with pliers or the like. Bent tongue pieces 11, 11
These are for easily gripping and fixing the film gripping fittings 15, which will be described later, and although they are not shown in the drawings, they may be provided in two stages, upper and lower. In this example, a front plate portion 12, a bottom plate portion 13 in which a through hole (not shown) for the screw member 6 is formed, and a back plate portion 14 constitute a rotation stopper for the nut 9.

The film gripping fitting 15 may have any conventional structure. In FIG. 2, a film 16 is sandwiched between a case body 15a having a clamping opening 15b and a presser plate 15c, and a screw 15d is driven into the clamping opening 15b from the presser plate 15c side to integrate them. The diagram shows the format that can be used.

In use, as is particularly clear in FIG. The movable member 10 and the screw member 6 to which the film gripping fittings 15 are attached are tilted so as to be almost parallel to the film 16 which is inclined along the arch shape of the vertical pipe 17, so that the head of the screw member 6 7 is engaged with the lower surface of the mounting seat plate 2 in an inclined state. Needless to say, when the movable member 10 is pulled by turning the head 7 with a spanner, an even greater stretching force is applied to the film 16.

<Effect of the invention> As is clear from the above explanation, since the screw member 6 is loosely fitted into the through hole 3 of the mounting seat plate portion 2, it becomes parallel to the direction of the film tensile force. The screw member supporting structure can freely change its inclination as shown in FIG.

Since this mounting seat plate part 2 is obtained by bending the upper end of one side of the U-shaped fixing plate 1, manufacturing is extremely simple. When the part 7 is turned with a spanner or the like, the vertical pipe 17 can easily be positioned in such a way that it does not get in the way.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the film tensioning fitting of this invention, and FIG. 2 is a perspective view showing the state in which the fitting of FIG. 1 is used. 1...U-shaped fixing plate, 2...Mounting seat plate, 3...
Through hole, 6...screw member, 7...head, 10...movable member, 15...film gripping fitting, 17...vertical pipe.

Claims (1)

[Scope of utility model registration request] A mounting seat plate portion 2 that projects outward is bent at the upper end of one side of the U-shaped fixing plate 1 that is fixed to a vertical pipe 17 bent in an arch shape, and a through hole 3 is formed in this mounting seat plate portion 2. The screw member 6 to which the head 7 or the nut is locked on the lower surface of the mounting seat plate 2 is inserted into the through hole 3.
A film gripping fitting 15 is loosely fitted into the screw member 6.
A pipe house covering film tensioning fitting formed by screwing a movable member 10 to which a movable member 10 is attached.