JP3014959U - Greenhouse sheet tension protector - Google Patents

Abstract

(57) [Summary] [Object] To provide a tension protection member which is interposed between a pipe and a tension sheet at a connecting position of two intersecting pipes of a greenhouse framework to prevent damage to the sheet. [Structure] The two pipes 1 and 2 that form the framework of the greenhouse
At a pipe connecting position where the pipes 1 and 2 are tightly connected to each other by the connecting metal fitting 3, the pipe holding portion 5a has a size and shape necessary and sufficient to cover the upper surface 3a of the connecting metal fitting 3 and has a C-shaped cross section. It is detachably attached to the pipe 1. [Effect] The rubbing between the tension sheet and the connecting fitting is completely blocked, and in particular, the polyolefin sheet is reliably prevented from being damaged by the connecting fitting.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a tension protection member used at a connecting position of two intersecting pipes forming a framework of a greenhouse to be interposed between the greenhouse sheet stretched thereon and the pipe. Further, it is necessary to cover the upper surface of the connecting fitting for tightly connecting the intersecting pipes, and to prevent the sheet from being rubbed with the polyolefin sheet, which is particularly suitable as a covering material for pipe houses, and prevent the sheet from being damaged. Regarding protective members.

[0002]

[Prior art]

 Conventionally, a soft vinyl chloride sheet is often used as a sheet stretched in a greenhouse (pipe house). This is because vinyl chloride sheets are inexpensive, stretchable, and easy to use. However, the vinyl chloride sheet is sticky and easily soiled, and it is very difficult to dispose of it after refilling it at a cycle of about one or two years. This is because vinyl chloride sheets are difficult to burn and emit black smoke when burned, producing toxic chlorine gas for the human body.For environmental protection, carry them to a specialist incinerator and pay the fee. Because there is no choice but to dispose.

Therefore, recently, a polyolefin-based sheet has been attracting attention as a stretchable sheet for greenhouses instead of a vinyl chloride sheet. The reason is that the polyolefin-based sheet has good transparency, has a smooth surface, and has a property of being resistant to stains. However, it has a low specific gravity, has a useful life of 5 to 6 years, and most importantly, it is easy to burn, and even if it burns, it emits white smoke and does not generate harmful gases to the human body. This is because it is suitable for incineration.

[0004]

[Problems to be solved by the present invention]

 However, the above polyolefin-based sheet also has drawbacks. Polyolefin sheet is very easily scratched, lacks elasticity, and is easily wrinkled. Therefore, at the pipe connection position where the two pipes that form the framework of the greenhouse intersect and both pipes are tightly connected by the connecting metal fittings, the polyolefin sheet stretched over them is rubbed on the corners of the connecting metal fittings. There is a high risk of cuts and damage. Therefore, at present, we are dealing with such things as sticking gum tape on the upper surface of the connecting metal fitting or winding old used sheets, but sticking the gum tape and winding sheets are very troublesome and troublesome. I can't stand it. It is not possible to reuse the gum tape once used.

Therefore, an object of the present invention is to easily cover the upper surface of a connecting fitting for tightly connecting two pipes forming a framework of a greenhouse at a connecting position, and particularly to use a polyolefin sheet suitable as a covering material for a pipe house. Prevents rubbing against the connecting metal fittings to prevent damage to the sheet, keeps the useful life of the polyolefin sheet to the maximum, and is an economical greenhouse sheet tension protection member that can be used over and over again. To provide.

[0006]

[Means for Solving the Problems]

 As a means for solving the above-mentioned problems of the prior art, the stretching protection member 5 for a greenhouse sheet according to the invention of claim 1 is composed of two pipes 1 and 2 which form a framework of a greenhouse. , 2 has a size and shape necessary and sufficient to cover the upper surface 3a of the connecting metal fitting 3 at the pipe connecting position where the connecting metal fitting 3 is tightly connected to the pipe 1 with the pipe holding portion 5a having a C-shaped cross section. It is characterized by being detachably attached.

According to a second aspect of the present invention, the tension protection member 5 holds the pipe between the pipes 1 and 2 at an inner portion of the connecting fitting 3, an outer portion of the connecting fitting 3, or an inner portion and an outer portion of the connecting fitting 3. It is characterized in that the portion 5a is formed. The stretchable protection member 5 of claim 3 is characterized in that a notch 5b for facilitating bending is formed in the pipe holding portion 5a formed in the inner portion of the connecting fitting 3.

[0008]

[Advantage] The stretching protection member 5 of the greenhouse sheet has a size and shape necessary and sufficient to cover the upper surface 3a of the connecting fitting 3, and is detachably attached to the pipe 1 by the pipe holding portion 5a having a C-shaped cross section. To be Therefore, the upper surface 3a of the connecting fitting 3 can be easily installed by simply attaching the tension protection member 5 from above to the upper pipe 1 at the connecting position (intersecting position) of the two pipes 1, 2 tightly connected by the connecting fitting 3. Can be covered (Fig. 1). As a result, when the polyolefin sheet 6 is stretched, the stretching protection member 5 interposed between the sheet 6 and the connecting fitting 3 completely cuts off the rubbing between the sheet 6 and the connecting fitting 3. There is no risk of the sheet 6 being rubbed by the connecting fitting 3 and being damaged (FIG. 2).

Moreover, the tension protection member 5 can be used (diverted) many times because the pipe holding portion 5 a can be easily separated from the pipe 1 only by lifting it upward by hand. Since the notch 5b is formed in the pipe holding portion 5a formed in the inner side portion of the connecting fitting 3 in the tension protection member 5 of claim 3, the bending angle of the upper pipe 1 at the pipe connecting position is Even if they are different, the extending protection member 5 is appropriately bent at the base end portion of the notch 5b, and the upper surface 3a of the connecting fitting 3 can be reliably covered.

[0010]

【Example】

 Hereinafter, the illustrated embodiment of the present invention will be described. FIG. 1 shows an enlarged connection position of two intersecting pipes 1 and 2 forming a greenhouse (pipe house). The two pipes 1 and 2 intersect each other in a cross shape, and the two pipes 1 and 2 are firmly connected to each other by a connecting fitting 3 formed of a wire material having a strong spring property. On the upper surfaces (outer surfaces) of the pipes 1 and 2, a polyolefin sheet 6 suitable as a greenhouse covering material is stretched. However, instead of the polyolefin-based sheet 6, any type of sheet such as a vinyl acetate-based sheet is preferably used.

A stretch protection member 5 which is an injection molded product of polyethylene is interposed between the connecting fitting 3 and the polyolefin sheet 6 and is attached. This is to protect the stretched polyolefin sheet 6. However, the material of the tension protection member 5 is not limited to the above-mentioned polyethylene, but may be a synthetic resin such as polypropylene or vinyl chloride. Goods).

The stretched protection member 5 has a basic overall shape that is curved (semi-circular) along the outer peripheral surface of the pipe 1. The tension protection member 5 has a thickness of about 1.2 mm. The length in the longitudinal direction is about 75 mm, which is necessary and sufficient to cover the two upper surfaces (line portions) 3a, 3a of the connecting metal fitting hung on the upper surface of the upper pipe 1. Has been done. Inside the connecting fitting 3 at the pipe connecting position, that is, between the two upper surfaces 3a, 3a of the connecting fitting 3, there is a pipe holding portion 5a having a C-shaped cross section for holding the upper pipe 1 from above. Formed (FIG. 2B). The diameter of the C-shaped pipe holding portion 5a is set to a length of about 19 to 32 mm. On the inner side surface of the lower end of the pipe holding portion 5a, an oblong thick-walled portion 51 that is undercut is formed to prevent coming off. This is to ensure that the pipe 1 is clamped (locked) and to prevent it from falling off. Therefore, the tension protection member 5 is configured to be attachable to and detachable from the pipe 1.

Therefore, the polyolefin sheet 6 stretched on the stretch protection member 5 is completely cut off from the contact with the connecting fitting 3, so that the polyolefin sheet 6 is placed on the pipe 1. There is no possibility that the protruding upper surface 3a of the connecting fitting 3 will come into contact with the upper surface 3a and be damaged, and the sheet 6 can be reliably used for a long period of time. Since the tension protection member 5 can be easily removed and has a long service life, it can be easily reused.

[0014]

Second Embodiment FIG. 3 shows a structure of a tension protection member in which two pipe holding portions 5a are formed on both outer side portions of the connecting fitting 3. The function and effect obtained are similar to those of the first embodiment. The number of pipe holding portions 5a in this embodiment is doubled as compared with the first embodiment, and at the same time, the two wire portions 3a, 3a of the connecting fitting 3 are pressed from the outside. Therefore, the degree to which the tension protection member 5 is clamped in the upper pipe 1 is stronger than that in the first embodiment, and there is no deviation, and the line portion 3a on the upper surface of the connecting fitting 3 is completely covered.

FIG. 4 shows a case where the tension protection member 5 of this embodiment is applied to a wedge-type connecting fitting 3 '. When viewed from the side, an inverted U-shape (not shown) and when viewed from the front (direction of FIG. 4), a connector body 31 having an inverted U-shaped notch 32 from the lower end of the substantially central portion is connected to the pipe connection position. Of the upper pipe 1 from above, the lower pipe 2 is fitted into the cutout portion 32 from below, the two pipes 1 and 2 are crossed, and the wedge 33 is inserted into the lower surface of the lower pipe 2 with a wedge effect. Both pipes 1 and 2 are connected and fixed. Attached to the upper surface 3a of the wedge-type connecting fitting 3'is a tension protection member 5 having the same structure as in FIG. 3 having two pipe holding portions 5a, 5a on both outer side portions of the connecting tool body 31. It is possible to prevent the polyolefin sheet 6 from being rubbed and damaged at the corners of 31 in particular.

FIG. 5 shows a modified type of the second embodiment, in which the tension protection member 5 is cut at the central portion in the lateral direction, and a set of two tension protection members 5 ′, 5 of small size. It shows what has been formed in '. According to this type of tension protection members 5'and 5 ', there is flexibility to adapt to the coating of the upper surface 3a of the connecting fitting 3 having various shapes. Of course, the wedge-type connecting fitting 3'shown in FIG.

[0017]

[Third Embodiment] FIG. 6 shows a tension protection member 5 in which three pipe holding portions 5a are formed at three locations inside and outside the metal fitting 3. In the case of this embodiment, the number of the pipe holding portions 5a is the largest as compared with the above-mentioned embodiments, and therefore the holding degree of the tension protection member 5 to the upper pipe 1 is the best.

In this embodiment, a case where it is manufactured as a press-formed product of an iron plate (however, it may be a synthetic resin molded product) is shown, and as shown in FIG. 6B, the lower end of each pipe holding portion 5a is The curl portion 52 wound inside is formed. The curled portion 52 is for ensuring that the curled portion 52 is fitted into the upper pipe 1 in the same manner as the thick portion 51 of FIG.

FIG. 7 shows that, in the tension protection member 5 of FIG. 6, a central portion of the pipe clamping portion 5a formed on the inner side of the connecting fitting 3 has a notch 5b for facilitating bending of the pipe clamping portion 5a. It shows a case where is formed in a downward spread shape. Even if the bending angle (such as the roof slope of the greenhouse) of the upper pipe 1 of the two intersecting pipes is large or small, the tension protection member 5 can be freely bent at the base end of the notch 5b. This is to give them the flexibility to do so.

[0020]

[Effect of the present invention]

 By using the tension protection member 5 for the greenhouse sheet according to the invention of claim 1, it is possible to prevent the rubbing between the tension sheet and the connection fitting 3 completely, and to prevent the sheet from being damaged by the connection fitting 3. Therefore, it is effective to use a polyolefin sheet 6 or the like suitable as a covering material for greenhouses. Further, since the tension protection member 5 can be easily attached to and detached from the pipe 1, there is an advantage that it can be reused and diverted and the economy is high.

[Brief description of drawings]

FIG. 1 is a perspective view showing an attached state of a tension protection member at a pipe connecting position.

FIG. 2A is a side view showing an attached state of a tension protection member at a pipe connecting position, and B is a cross-sectional view of A taken along the line II of FIG.

FIG. 3 is a side view showing a second embodiment.

FIG. 4 is a side view showing a different usage example of the second embodiment.

FIG. 5 is a side view showing a different aspect of the second embodiment.

FIG. 6A is a side view of the third embodiment, and B is a sectional view taken along the line II-II of A.

FIG. 7 is a side view showing a different aspect of the third embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Upper pipe 2 Upper pipe 3 Connecting metal fitting 3a Upper surface 5 Tension protection member 5a Pipe holding part 5b Notch 6 Polyolefin sheet

Claims (3)

[Scope of utility model registration request] 1. A pipe connecting position in which two pipes forming a framework of a greenhouse cross each other and both pipes are tightly connected to each other by a connecting metal fitting, and have a size and a shape necessary and sufficient to cover an upper surface of the connecting metal fitting. A stretchable protection member for a greenhouse sheet, which is detachably attached to a pipe with a C-shaped cross section. 2. A pipe holding portion is formed at an inner portion of the connecting fitting at the connecting position of the pipe, an outer portion of the connecting fitting, or an inner portion and an outer portion of the connecting fitting. The stretchable protective member for the greenhouse sheet described in. 3. The extension of the greenhouse sheet according to claim 2, wherein the pipe holding portion formed at the inner side portion of the connecting fitting is provided with a notch for facilitating bending. Protective material.