JP3035056U - Ventilator in a greenhouse - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: To prevent deformation of the pipe by applying an unreasonable load to the pipe while rising while winding the sheet.
Prevents damage and disconnection, and also prevents damage to the entire mechanism and ensures safety. SOLUTION: One end of a sheet 1 stretched on a frame of a greenhouse B is wrapped around a pipe 2, the pipe 2 is connected to a rotary drive member 16, and the rotary drive member 16 is rotationally driven to move the pipe 2 in one direction. Sheet 1 by rotating
In the ventilation device 10 in the vinyl house B which winds up or rewinds, the expandable rod 15 and the hollow coupling 17 connected to the tip of the rod 15 are interposed between the pipe 2 and the rotation driving member 16. Rod 1
The base end of 5 is connected to the rotary drive member 16, and the coupling 1
One end of the pipe 2 is inserted into the tip of 7 and fastened.

Description

[Detailed description of the invention]

[0001]

[Field to which the invention belongs]

 The present invention relates to a ventilation device in a greenhouse, which is a greenhouse for growing animals and plants, in which a transparent or translucent synthetic resin sheet is spread around the outer periphery of a frame.

[0002]

[Prior art]

 In general, greenhouses called plastic greenhouses and pipe houses, for example, stand up on the ground with a large number of arch pipes as a skeleton, and a long dovetail frame is fixed laterally to the arch pipes and spread on the arch pipes. A transparent sheet made of synthetic resin is fixed to the dovetail frame via elastic locking wire.

On the other hand, if the transparent sheet is always stretched on the arch pipe, the temperature inside the house becomes high, which adversely affects the growing animals and plants, or it is very hot for workers who work inside the house. Will be very difficult.

Therefore, conventionally, a ventilation device is attached to an arbitrary position such as a side surface of a house, a roof surface, or a valley portion, and the seat is rolled up or rewound so that the inside of the house is communicated with or cut off from the outside air. It is usual to try to adjust the temperature inside.

As shown in FIG. 6, the ventilation device in this case includes a pipe 2 around which one end of a seat 1 is wound, a rotary drive member 4 in which one end of a pipe 2 is connected through an output shaft 3, and a rotary drive member. The handle 5 is connected to the moving member 4 via the input shaft. In this case, the power transmission mechanism, the output shaft, and the input shaft are integrally housed in the housing 6 of the rotary drive member 4, and the handle 5 or the electric drive mechanism is provided at the end of the housing 6, and The housing 6 is held by a guide pipe P standing upright on the ground.

By the way, a cylindrical socket 7 is fitted to the output shaft 3, one end of the pipe 2 is inserted into the end portion of the socket 7, and a bolt 9 for slip prevention is inserted from a hole 8 formed in the socket 7. The pipe 2 is fixed by screwing it to the outer surface of the pipe 2.

When the lower end of the seat 1 is wrapped around the pipe 2 and the handle 5 is rotated, the pipe 2 is rotated, the pipe 2 is raised while winding the seat 1, and an opening A for ventilation is formed below the seat 1. When the handle 5 is rotated in the opposite direction, the sheet 1 is rewound and the opening A is blocked.

[0008]

[Problems to be solved by the device]

 Normally, the rotary drive member 4 moves up and down while being guided by the guide pipe P, but it may be fixed to the guide pipe P or may not move up and down for some reason.

When the rotary drive member 4 is fixed in this way, the base end of the pipe 2 and the socket 7 do not displace, and the intermediate trunk portion or the tip end side of the pipe 2 rises while rolling up the sheet 1. Then, the pipe 2 is bent as shown by the dotted line. Therefore, the opening A is formed for a long time in a curved state, and when it is further rewound, it is curved and descends. When the pipe 2 is bent like this, an unreasonable load is applied to the connection position between the base end of the pipe 2 and the socket 7, and a part of the pipe 2 pressed by the bolt 9 is deformed or damaged. Will come out of the socket 7 and will be difficult to reuse, and in the worst case, the entire ventilation system will be damaged.

Similarly, when an electric drive mechanism is used in place of the handle 5, the electric drive mechanism is always operated by a signal from a sensor that detects the temperature inside the house, so that the repeating pipe 2 is Since it moves up and down and repeats its bending, there is a problem that the frequency of deformation of the pipe 2 increases.

Therefore, an object of the present invention is to prevent the pipe from being deformed, damaged, and pulled out without applying an unreasonable load to the pipe while the seat is being rolled up and being raised. It is to provide a ventilation system for a greenhouse that can prevent damage to the building and ensure safety.

[0012]

[Means for Solving the Problems]

 In order to achieve the above object, the structure of the present invention is such that one end of a sheet stretched on a frame of a vinyl house is wrapped around a pipe, the pipe is connected to a rotary drive member, and the rotary drive member is rotationally driven. In a ventilation system in a greenhouse that winds or unwinds a sheet by rotating the rod in one direction, an expandable rod is provided between the pipe and the rotary drive member, and a hollow coupling connected to the tip of the rod. It is characterized in that the base end of the rod is coupled to the rotary drive member, and the end of the pipe is inserted and fastened at the tip of the coupling.

In this case, the expandable rod is composed of the outer tube and the inner tube slidably inserted into the outer tube, and the coupling has a tubular holding portion with a split side portion, and a holding portion. It consists of a fitting part provided at the base end of the inner part and a pair of opposing support pieces that are connected to the side end of the holding part.The base end of the inner tube is connected to the rotary drive member, and the outer tube It is preferable that the fitting portion of the coupling is fitted and fixed to the tip end, and the support piece is fastened in a state where one end of the pipe is also inserted into the holding portion.

Similarly, a tubular spacer having a notch on the side may be fitted to the tip of the holding portion, and one end of the pipe may be inserted into the holding portion via the spacer.

[0015]

[Embodiment]

 Hereinafter, an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 2, for example, the ventilation device 10 in the greenhouse of the present invention is arranged on the side surface side of the vinyl house B. The vinyl house B is made of a transparent or translucent vinyl or the like stretched through an arched pipe 11 and a fixed member 14 of a sheet formed of a dovetail frame 12 and a locking line 13 on the outer surface of the arched pipe 11. It is composed of a synthetic resin sheet 1.

The end portion of the seat 1 is wound around a pipe 2 that constitutes the ventilation device 10, and is rolled up or rewound by rotating the pipe 2 to open or close the ventilation opening A on the side surface. The opening A may be formed on the roof surface or the valley of the multi-story house.

The ventilation device 10 includes a pipe 2 around which an end portion of a seat 1 is wound, an expandable rod 15 connected to one end of the pipe 2, and a rotation driving member 16 connected to a base end of the rod 15. It is composed of.

That is, the ventilation device 10 in the vinyl greenhouse according to the present invention is configured such that one end of the sheet 1 stretched on the arched pipe 11 of the vinyl greenhouse B is wrapped around the pipe 2 and the pipe 2 is driven to rotate. The sheet 1 is wound up or unwound by being connected to 16 and rotating the rotary driving member 16 electrically or manually to rotate the pipe 2 in one direction. In this case, the expandable rod 15 and the hollow coupling 17 connected to the tip of the rod 15 are interposed between the pipe 2 and the rotation driving member 16 so that the base end of the rod 15 serves as the rotation driving member 16. The two ends of the pipe 2 are connected and fastened by inserting one end of the pipe 2 into the tip of the coupling 11.

As shown in FIG. 1, the extendable rod 15 is composed of a columnar outer tube 18 and an inner tube 19 slidably inserted into the outer tube 18, and the coupling 17 has a notch on a side portion. A tubular holding portion 21 having a C-shaped cross section, which is formed with 25, a fitting portion 22 provided at the base end of the holding portion 21, and a pair of opposing supports continuously provided at the side ends of the holding portion 21. It is composed of pieces 23, 23. The base end of the inner tube 19 is connected to the output shaft 24 that constitutes the rotary drive member 16, and the fitting portion 22 of the coupling 17 is fitted and fixed to the tip of the outer tube 18 and is also held in the holding portion 17. The support pieces 23, 23 are fastened with one end of the pipe 2 inserted.

In this case, a tubular spacer 26 having a split 20 on the side is fitted to the tip of the holding portion 17, and one end of the pipe 2 is inserted into the holding portion 21 via the spacer 26. May be.

As shown in FIGS. 1 and 3, bolt holes 27 and 28 are formed in the tip of the outer tube 18 and the fitting portion 22, respectively, and after fitting the fitting portion 22 to the outer tube 18. It is preferable to fix the fitting portion 22 by fastening the bolts 29 inserted into the bolt holes 27 and 28 with the nuts 30, but the fixing method may be simple press fitting or adhesion.

Similarly, a bolt hole 31 is also formed in the base end of the inner tube 19 and the output shaft 24, and the inner tube 19 is connected to the output shaft 24 by a bolt 32 and a nut 33 mounted in the bolt hole 31.

Bolt holes 34 and 35 are formed in the holding portion 21 and the support pieces 23 and 23 that form the coupling 17, respectively. The pipe 2 inserted in the holding portion 21 is prevented from coming off by tightening the support pieces 23, 23 with the bolt 37 and the nut 38 fitted in the bolt hole 35 of the support piece 23. Further, in this state, it is preferable that the bolt 36 inserted into the bolt hole 34 is pressed against the outer surface of the pipe 2 to more firmly fix it.

As shown in FIG. 3, the base end of the pipe 2 is normally inserted directly into the coupling 17 to fix it, but in some cases, the pipe 2 having a diameter considerably smaller than the diameter of the holding portion 21 may be inserted. In this case, the spacer 26 is fitted into the holding portion 21, then the thin pipe 2 is inserted into the spacer 26, and the tip of the bolt 36 is further passed through the bolt hole 34 and the notch 25 of the spacer 26. It is preferable to crimp it to the outer surface of the pipe 2.

As shown in FIG. 1, the retractable rod 15 may have an inner tube 19 inserted therein without any play in the outer tube 18. However, as shown in FIG. The outer tube 18 may be made slightly thinner than the inner diameter, and a play may be provided between the outer tube 18 and the inner tube 18 so that the rod 15 bends slightly during expansion and contraction to release the load.

Similarly, as shown in FIG. 5, a long hole 39 is formed in the outer tube 18 along the axial direction, and a guide pin 40 slidably fitted in the long hole 39 is formed on the outer surface of the inner tube 17. The long hole 39 and the guide pin 40 may be provided to guide the relative slide of the inner tube 19 and the outer tube 18 to prevent the both from coming off.

The outer tube 18 and the inner tube 19 may be prism pipes, as shown, or may be column pipes, elliptical pipes, or C-shaped channels. Even when a cylindrical pipe is used, the elongated hole 39 and the guide pin 40 shown in FIG. 5 may be provided. In this case, the guide pin 40 prevents the cylindrical pipe from coming off and is also used as a rotation transmitting member.

The rotary drive member 16 is composed of a housing 41, a power transmission mechanism such as a gear provided in the housing 41, and an output shaft 24 interlocked with the power transmission mechanism. The housing 41 includes a socket 42 and a bolt 43. It is held by a pipe 44 standing on the ground via the. The power transmission mechanism is electrically driven by remote control to rotate the output shaft 24, but may be driven manually via the handle H.

The rotation driving member 16 is fixed at a predetermined position of the pipe 44 as described above, but is attached so as to be vertically slidable via the socket 42, and is interlocked with the vertical movement of the sheet winding pipe 2. You may move it up and down.

Next, the operation in the use state will be described. When the output shaft 24 is rotated in one direction manually or electrically, the rod 15 and the pipe 2 rotate, and the pipe 2 turns the seat 1 upward. As a result, the opening A is gradually widened and the inside of the vinyl house B is ventilated. When the output shaft 24 is rotated in the opposite direction from this state, the pipe 2 rewinds the sheet 1 and blocks the opening A.

During the above operation, when the rotary drive member 16 is fixed to the pipe 44, the intermediate body portion and the tip end side of the pipe 2 move upward, but the rod 15 and the pipe close to the output shaft 24 are moved. The proximal side of 2 cannot rise sufficiently and tries to bend and extend from the portion of the pipe 2 near the proximal side. However, at this time, a pulling force that tries to extend acts on the rod 15, and the outer tube 18 extends along the outer periphery of the inner tube 19 to release this pulling force, and it is impossible between the coupling 17 and the pipe 2. Power does not work. Therefore, the pipe 2 is prevented from being deformed, damaged, or pulled out, and the rod 15 or the coupling 17 is also prevented from being deformed or damaged.

[0032]

[Effect of the invention]

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

According to the invention of each claim, since the expandable rod is interposed between the pipe and the rotation driving member, even if the pipe is rotated with the rotation driving member fixed, the pipe can be rotated. A part of the pipe bends and a tensile force is generated, but at this time, the rod extends and the tensile force is released, so an unreasonable load is not applied to the joint between the coupling and the pipe, and the pipe is deformed or damaged. ∙ Prevents slipping out and also prevents deformation and damage of the coupling, rod, and rotary drive member.

According to the invention of claim 2, since the rod is composed of the outer tube and the inner tube slidably inserted into the outer tube, the rod smoothly expands and contracts and the tensile force generated on the pipe side is generated. Escape.

According to the second aspect of the present invention, since the coupling is composed of the holding portion having a split, the fitting portion provided on the holding portion, and the support piece, the coupling is inserted into the holding portion. The base end of the pipe can be fixed by tightening the support piece to prevent the pipe from coming off. Moreover, depending on the thickness of the pipe, the holding portion can be expanded or reduced in diameter through the split, and pipes of various thicknesses can be used.

According to the invention of claim 3, since the spacer with the notch provided at the tip of the holding portion is fitted, even when the pipe is quite thin, the spacer can prevent the inner diameter of the holding portion from the pipe. Prevents play due to the difference from the outer diameter. Further, the notch provided in the spacer allows, for example, a bolt inserted from the bolt hole of the holding portion to pass through the notch to the pipe side, so that the pipe can be firmly fixed.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a ventilation device according to an embodiment of the present invention.

FIG. 2 is a partially cutaway perspective view of a greenhouse in which a ventilation device according to an embodiment of the present invention is attached.

FIG. 3 is an exploded perspective view showing a coupled state of a coupling and a pipe.

FIG. 4 is a perspective view of a retractable rod according to another embodiment.

FIG. 5 is a partially cutaway perspective view of a retractable rod according to another embodiment.

FIG. 6 is a partially cutaway perspective view of a greenhouse in which a conventional ventilation device is attached.

[Explanation of symbols]

 1 Seat 2 Pipe 10 Ventilator 15 Telescopic Rod 16 Rotational Drive Member 17 Coupling 18 Outer Tube 19 Inner Tube 20 Split 21 Hugging Part 22 Fitting Part 23 Supporting Piece 25 Notch 26 Spacer B Vinyl House H Handle

[Procedure amendment]

[Submission date] September 17, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims for utility model registration

[Correction method] Change

[Correction contents]

[Utility model registration claims]

Claims (3)

[Utility model registration claims] 1. A sheet is obtained by winding one end of a sheet stretched on a frame of a vinyl house around a pipe, connecting the pipe to a rotation driving member, and rotating the rotation driving member to rotate the pipe in one direction. In a ventilation device in a vinyl house that winds up or rewinds a rod, the base end of the rod is driven to rotate by interposing a retractable rod between a pipe and a rotation driving member and a hollow coupling connected to the tip of the rod. A ventilation device for a greenhouse, characterized in that it is connected to a member, and one end of a pipe is inserted and fastened at the tip of a coupling. 2. A tubular hugging part having a stretchable rod composed of an outer tube and an inner tube slidably inserted into the outer tube, and a coupling having a split side part, and a hugging part of the hugging part. A fitting part provided at the base end,
A pair of supporting pieces that are continuously provided on the side ends of the holding portion and are opposed to each other. The base end of the inner tube is connected to the rotation driving member, and the fitting portion of the coupling is fitted to the tip of the outer tube. The ventilation device for a greenhouse as claimed in claim 1, wherein the support piece is fixed and the support piece is fastened in a state where one end of the pipe is also inserted into the holding portion. 3. A plastic greenhouse characterized in that a cylindrical spacer having a side cutout is fitted to the tip of the holding portion, and one end of the pipe is inserted into the holding portion through the spacer. Ventilation equipment in.