JPH119112A - Support for rush - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the subject support capable of being easily embedded into soil and also easily pulled out without requiring a useless labor and a fruitless time by forming the lower end insertion portion of the support in a revolution paraboloid shape projected toward the soil. SOLUTION: This support 1 for rush is formed by closing the upper end of the support main body 4 and disposing an insertion portion 2 for facilitating the insertion of the support into soil at the lower end. Therein, the insertion portion 2 is formed in a revolution paraboloid shape projected to the side of soil. The support main body 4 preferably comprises a coated steel pipe, a steel pipe coated with a synthetic resin, a synthetic resin pipe, etc. The insertion portion 2 may be formed by pressing one end of the support main body 4 or attaching an insertion member produced by the injection molding of a synthetic resin, etc. The synthetic resin is preferably a thermoplastic resin such as vinyl chloride resin or polyethylene. The synthetic resin pipe may be reinforced with glass fibers.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support for rush which is used by being embedded in soil.

[0002]

2. Description of the Related Art Conventionally, rush has been widely used as a material for tatami mats. Since rush grass generally grows to a height of 120 cm or more, it easily falls down when the wind blows, and a pillar is used to prevent the rush. The struts are, for example, installed in a grass field at regular intervals (for example, 1 m intervals) in a grid pattern, and ropes are stretched between the struts to prevent collapse.

[0003] As a material of the above-mentioned grass support, generally,
A simple substance of a metal such as bamboo, wood, synthetic resin, and iron, or a composite thereof is used. Since these pillars are buried in the soil by applying pressure by hitting the upper end with a hammer,
At its lower end (the side to be embedded in the soil), an insertion portion (bending) is provided to reduce resistance when embedded in the soil, and there are various shapes.

For example, the following materials are generally used as the material and shape of the insertion portion. (A) FIG. 4 (a) is a perspective view, and FIG. 4 (b) is a bottom view, as shown in FIG. 4 (b); (b) FIG. 5 (a) is a perspective view, and FIG. 5 (b) is a bottom view. FIG. 6 (a) is a perspective view, and FIG. 6 (b) is a bottom view, as shown in FIG. 6 (b). 4 (a) is a perspective view, and FIG. 7 (b) is a bottom view, and FIG. 8 (a) is a perspective view, and FIG. 8 (b) is a bottom view. body. In the figure, 10 is a support, 11
Indicates an insertion portion.

[0005] The rug support is extracted when the rush is harvested. However, when the rush is extracted, the soil around the support is tightened and the pull-out resistance is increased. For this reason, the upper end of the column is repeatedly rotated or pryed in a circular manner, and the soil around the insertion portion is pushed away to increase the diameter of the buried hole, thereby reducing the pull-out resistance and pulling out. .

[0006] However, in the grass support shown in FIGS. 4 to 8, since the insertion portion has an acute angle, the resistance when the diameter of the burial hole is increased is increased, and extra labor is required. was there.

Further, recently, a perspective view is shown in FIG.
As shown in the bottom view of FIG. 9 (b), the lower end of a steel pipe or a steel pipe whose surface is coated with a synthetic resin is crushed so that the cross section becomes substantially V-shaped, and the insertion part 11 is formed. Used. However, when inserting the grass support having such an insertion portion 11 into the soil, the mouth of the substantially V-shaped insertion portion 11 may be opened, and the insertion into the soil becomes difficult. There was a point.

Therefore, in order to prevent the opening of the insertion portion 11 from opening, as shown in a perspective view in FIG. 10A and a bottom view in FIG. The lower end of the steel pipe is crushed as shown in FIG. 10 (c) as a perspective view and FIG. An insertion portion 11 is used in which a cross section is processed into a substantially V-shape and then a protective cap 12 is covered.

However, as shown in FIGS. 10 (a) and 10 (b), an insertion portion 11 in which the tip of a steel pipe is crushed in a V-shape and then turned back, or an insertion portion 11 in which a protective cap 12 is covered. In the case of (1), since roots and the like are easily entangled during burial in the soil, there is a problem that the pull-out resistance increases. Particularly, in the case of the insertion portion 11 covered with the protective cap 12, since the thickness of the protective cap 12 is protruded outside the synthetic resin tube, the pull-out resistance becomes large, and a large labor and a long time are required for the pull-out. Needed.

In addition to the above, as shown in FIGS. 11 (a) and 11 (b), a synthetic resin tube having a lower end covered with a conical cap as an insertion portion is used. However,
Because the thickness of the cap is outside the synthetic resin tube,
There was a problem that the pullout resistance was increased.

[0011]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and to easily bury the soil in the soil, and to easily pull out the wire without wasteful labor and time. The purpose of the present invention is to provide a support for grass.

[0012]

The support for rush of the present invention is
An upper end of the main body of the support is hermetically sealed, and a support for rush is provided with an insertion portion at the lower end for facilitating embedding in the soil, wherein the insertion portion is convex toward the soil side. It is characterized by being formed from a paraboloid of revolution.

[0013]

According to the grass support of the present invention, the upper end of the support body is hermetically sealed, and the lower end is provided with an insertion portion for facilitating embedding in the soil. Since it is formed of a convex paraboloid of revolution, the resistance at the time of embedding in the soil is small, and since there is no sharp tip, the resistance at the time of increasing the embedding hole at the time of pulling out can be reduced. Therefore, it is possible to extract without wasting labor and time.

[0014]

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a partially cutaway exploded perspective view showing an example of a support for rush of the present invention. In FIG.
Reference numeral 1 denotes a support for rush, 2 denotes an insertion portion, 3 denotes a plug for sealing the upper end, and 4 denotes a main body of the support. The material of the column body 4 is not particularly limited, and for example, a painted steel pipe, a steel pipe coated with a synthetic resin, a synthetic resin pipe, or the like is suitably used.

The insertion section 2 is formed of a paraboloid of revolution that is convex toward the soil side. The insertion section 2 may be formed by crushing one end of the column main body 4, or may be separately inserted by molding a synthetic resin or the like by an injection molding method. The synthetic resin is not particularly limited, but is preferably a thermoplastic resin such as a vinyl chloride resin, polyethylene, or polypropylene. These synthetic resin tubes may be reinforced with glass fibers.

For example, as shown in FIG. 2 (a), the insertion portion 2 formed of a synthetic resin has a tip portion 23 and a fitting portion 24.
It is composed of The cavity 22 may be provided inside the fitting portion 24, and the notch 21 may be further provided. When the insertion portion 2 is inserted into one end of the column main body 4, the fitting portion 24 is inserted into the column main body 4. However, since the cavity 22 and the notch 21 are provided,
Since the diameter can be easily reduced at the time of insertion, the insertion can be easily performed. Further, after the insertion, it is held by the support body 4 by the restoring force of the fitting portion 24.

The plug 3 is not particularly limited, but is made of, for example, injection molded of a thermoplastic resin such as vinyl chloride resin, polyethylene or polypropylene.
The plug 3 formed of a synthetic resin has, for example, a fitting portion 33 as shown in FIG. 3B, and a cavity 32 may be provided inside the fitting portion 33. 31 may be provided.

When the plug 3 is inserted into the other end of the column body 4, the fitting portion 33 is inserted into the column body 4.
By providing the cavity 32 and the notch 31, the diameter can be easily reduced at the time of insertion, so that the insertion can be facilitated. After the insertion, the fitting portion 33
Is held by the column main body 4 by the restoring force of.

An adhesive may be used to securely fix the insertion section 2 and the plug 3 to the column body 4. In this case, an adhesive is applied to the fitting portion 24 of the insertion portion 2 and the fitting portion 33 of the plug 3 and inserted into the support body 4.

Example 1 As shown in FIG. 1, glass fibers impregnated with unsaturated polyester resin are arranged in the axial direction of the outer peripheral surface of an extruded vinyl chloride resin inner tube, and unsaturated polyester is placed on the glass fibers. A resin tube impregnated with glass fiber was wound in the circumferential direction by filament winding and reinforced, and a composite tube (outer diameter 25 mm) whose outer peripheral surface was coated with a vinyl chloride resin was used as the column body 4. A plug 3 made of a vinyl chloride resin as shown in FIG. 3 is inserted into one end of the column body 4 and an insertion portion 2 made of a vinyl chloride resin as shown in FIG. Prop 1 (total length 1600m
m) was prepared. When inserting the insertion portion 2 and the plug 3, a vinyl chloride resin adhesive was used. This grass support 1 could be easily embedded in the soil by tapping the plug 3 lightly with a hammer. Also, after leaving for 3 months in the state of being buried in the soil, the plug 3 could be easily removed by grasping it with both hands and rotating it in a circular motion.

(Comparative Example 1) The upper end of a rug post, shown in FIG. 7, having a four-sided wooden insert, could be easily embedded in the soil by tapping lightly with a hammer.
However, after leaving it buried in the soil for 3 months, the upper end was grasped with both hands and rotated so as to draw a circle, but it was difficult to remove.
It took two to three times as long as Example 1 to pull out.

[0022]

The support for rush of the present invention has the above-mentioned structure, and the insertion portion for facilitating the burial into the soil at the lower end has a paraboloid of revolution protruding toward the soil. Since it is formed from a surface, the work of embedding in the soil is easy, and the pull-out work can also be easily performed. Therefore, it is possible to extract without wasting labor and time.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view, partially cut away, showing an embodiment of a support for rush of the present invention.

2 (a) is a front view showing an example of an insertion portion, FIG. 2 (b) is a plan view thereof, and FIG. 2 (c) is a sectional view thereof.

FIG. 3A is a bottom view showing an example of a plug, and FIG.
3B is a front view, FIG. 3C is a plan view, FIG.
(D) shows a cross-sectional view thereof.

FIG. 4 (a) is a perspective view showing an example of an insertion portion of a conventional rush support for rush, and FIG. 4 (b) is a bottom view thereof.

FIG. 5 (a) is a perspective view showing another example of the insertion portion of a conventional rush support for rush, and FIG. 5 (b) is a bottom view thereof.

FIG. 6A is a perspective view showing another example of the insertion portion of the conventional rush support for rush, and FIG. 6B is a bottom view thereof.

FIG. 7 (a) is a perspective view showing another example of the insertion portion of the conventional support for rush, and FIG. 7 (b) is a bottom view thereof.

FIG. 8 (a) is a perspective view showing another example of the insertion portion of the conventional support for rush, and FIG. 8 (b) is a bottom view thereof.

9A is a perspective view showing an insertion portion having a substantially V-shaped cross section, and FIG. 9B is a bottom view thereof.

FIG. 10 (a) is a perspective view showing an insertion portion in which a pipe end of a steel pipe is crushed, and the tip of the steel pipe is bent once;
FIG. 10B is a bottom view thereof. FIG. 10C is a perspective view showing the insertion portion with the protective cap attached, and FIG.
(D) is a bottom view thereof.

11 (a) is a perspective view showing an insertion portion in which a lower end of a synthetic resin tube is covered with a conical cap, and FIG. 11 (b).
Is a bottom view thereof.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Prop for grass 2 Insertion part 3 Plug body 4 Prop main body 10 Prop for conventional grasses 11 Insertion part 12 Cap

Claims (1)

[Claims] 1. A grass support having an upper end of a support column body hermetically sealed and an insert portion provided at a lower end thereof for facilitating embedding in the soil, wherein the insert portion is directed toward the soil side. A support for rush which is formed from a paraboloid of revolution having a convex shape.