JPH0718271Y2 - Brace net fastener for straw grass - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a locking device for preventing the net from slipping off in the net cultivation of strawberries.

[Conventional technology]

Conventionally, a wooden pile for thinning timber, a copper pipe plated with zinc, a synthetic resin-coated copper pipe, or the like has been used for a net-extending support for strawberries. If you stretch the net with these columns,
When the net was shaken by the wind, the net often fell downward. Therefore, in recent years, a large number of synthetic resin-coated copper pipe columns provided with nodes to prevent the net from slipping off have been adopted. However, the column also has the following problems.

[Problems to be solved by the invention]

The synthetic resin-coated steel pipe columns provided with the nodes are usually provided with the nodes spaced at intervals of 20 cm or more. When cultivating the net of straw grass using such a pillar, even if you try to raise the net in accordance with the growth of straw grass and set the net in the optimum position, the knot should be located just below the position of the net. There was almost no, and there was a problem that the net slipped as before.

Further, in order to prevent the net from slipping off, a column provided with a large number of nodes is used. However, since the net is tensioned with a strong force so as not to loosen, there is a problem in that when the net is moved up to the optimum position while being lifted, the knot obstructs the movement of the net. In particular, it was very laborious and laborious for a woman to raise the net beyond a clause.

Further, when the pillar is driven into the ground, if the mallet hits a knot, the synthetic resin coating is broken and the rust preventive effect is lost. In addition, providing a large number of nodes causes a problem that the cost of the support column is increased.

[Means for solving problems]

As a result of various innovations to solve the above problems, the present invention provides a convex portion on the back surface of a C-shaped locking tool that elastically clamps a cylindrical strut, and an inclined portion that inclines upward toward the inside. It is provided continuously on the upper side of the convex portion.

[Action]

According to the configuration of the present invention, even if the net for strawberries is strongly stretched so as not to loosen, when moving the net upwards, the net can be slid on the surface of the support pillar, and moreover, it is optimal for strawberries. The net is stopped at the position, and the locking device of the present invention is elastically clamped by the support at that position. Further, the wire of the net is prevented from slipping off by the convex portion of the locking tool, and since the inclined portion is continuously provided on the upper side of the upper part, the tension of the net wire is increased as it is displaced downward along the inclined portion. The tension can be increased and the tension can be increased, and the position of the locking tool can be changed by simply moving the wire of the net upward. The locking tool has a C-shape, and a C-shaped opening is brought into contact with a cylindrical support,
If you push the back of the locking tool as it is, the C-shaped part will open and C
The pillars are inserted into the mold and are clamped by the elasticity of both sides of the C mold. Therefore, the locking tool can be detachably stopped at an arbitrary position on the column with one touch, and the net can be prevented from slipping off.

〔Example〕

 An embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a perspective view of a locking device showing an embodiment of the present invention. Reference numeral 1 is a locking tool, and 2 is a convex portion provided on the back surface of the locking tool. The locking tool 1 is obtained by injection molding a thermoplastic resin such as polyethylene or polyvinyl chloride resin.
The material is not particularly limited, but a synthetic resin having good impact resistance and elasticity is desirable. The locking tool 1 has a substantially C-shape, and the holding pieces 6 and 7 on the left and right hold a stanchion column for more than half the circumference and can be attached to any position of the column. Left and right hugs 6,7
Is required to have a thickness having elasticity, and for example, in the case of high density polyethylene, a thickness of about 1.0 to 1.5 mm is suitable. Usually, the columns used for strawberries have a diameter of about 20 to 40 mm. Therefore, it is necessary that the inner diameter of the C-shaped portion of the locking tool 1 is smaller by about 0.5 to 4 mm than the outer diameter of the column to be used in order to provide the elastic force for holding the column. The thickness of the convex portion 2 of the locking tool 1 is preferably about 3 mm. However, particularly when a handle to be described later is provided below the convex portion 2, a force is applied to the periphery of the convex portion by the handle, so that it is desirable to make the shape thicker or not to break. The width of the C-shaped portion of the locking tool is about 15 to 50 mm.

FIG. 2 is a sectional view taken along the line AA of FIG. As is clear from this cross-sectional view, on the back surface of the C-shaped locking tool, an inclined portion 12 that gently inclines upward and inward is provided on the upper portion, and a convex portion 2 is provided below. The slanted portion 12 is such that the yarn of the straw net is located in this portion, and the tension of the yarn increases as it shifts downward, so that the yarn can be strongly stretched.
Further, when changing the position of the locking tool, the thread can be easily moved upward.

FIG. 3 is a perspective view of another embodiment of the fastener of the present invention. In FIG. 3, the locking tool 1, the left and right holding pieces 6, 7 and the convex portion 2 and the inclined portion 12 are the same as those in the embodiment shown in FIG. The tool 1 is provided with a handle 5 below the convex portion 2. When the handle 5 is mounted on the column and then removed, the handle 1 can be easily detached from the column by pushing up the handle 5 in the direction of the arrow X in the drawing.

FIG. 4 shows still another embodiment of the present invention, which is different from the above-mentioned embodiment in that a small protrusion 8 is formed inside the C-shaped locking tool 1.
The protrusions 8 are provided at two places, and when the locking tool 1 is mounted on a support made of a synthetic resin-coated steel pipe, the projections 8 bite into the resin-coated surface so that the locking tool 1 does not fall down. It is a thing.

Similarly, in the embodiment shown in FIG. 5, the inner wall surface of the C-shaped locking tool 1 is provided with irregularities so that the locking tool 1 does not fall downward. FIG. 6 is a cut end view taken along the line BB of FIG. 5, and 9 indicates the uneven portion of the inner wall surface. Further, a concave portion 3 and a convex portion 2 are also provided in the inclined portion on the back surface of the locking tool 1, and if the thread of the straw net is placed in the concave portion, the slipping off is completely prevented. . In the present invention, the shape of the concave portion or the convex portion on the back surface of the C-shaped locking tool is stable when the thread forming the net and the band around the net are positioned above the concave portion or the convex portion on the rear surface. If it does, it is not particularly limited.

FIG. 7 is a perspective view showing a usage state of the locking tool 1 of the present invention, and 10 is a support made of a synthetic resin-coated steel pipe.
The thread 20 of the straw net is placed on the inclined portion 12 on the back surface of the thread, and the thread 20 is prevented from slipping down by the convex portion 2. Further, a tongue piece 13 is provided further above the inclined portion 12 so that the thread 20 can smoothly move to the column, and is devised so as to eliminate a step due to the thickness of the upper end of the locking tool 1. . That is, the net is moved upward in accordance with the growth of straw grass, the handle 5 is pushed up, the locking tool 1 is once detached, and the net is mounted again just below the thread 20 of the net. When the thread 20 is pulled down in the direction of the arrow Y in the drawing,
It is slid on and placed on the inclined portion 12 on the back surface of the locking tool 1, and the tension is increased as the thread is pulled downward, so that the thread can be strongly stretched.

[Effect of device]

As is clear from the above description, the locking device of the present invention has the effect of reliably preventing the net for straw grass from slipping off, and the effect that the thread of the net can be tightly tensioned or easily moved upward. Moreover, the net can be locked at an arbitrary position according to the growth of straw grass. In addition, since the net can be slid on the pillar to be moved, a large force is not required and the work can be performed easily. In addition, the locking device of the present invention has a C-shape, and since the strut is elastically clamped, it can be easily attached and detached, and its operation can be done with one touch. There is an advantage that the net can be moved in a short time. In addition, the use of the locking device of the present invention does not require many nodes to be attached to the support column, which is advantageous in that the cost of the support column can be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the locking device of the present invention, and FIG.
1 is a sectional view taken along the line AA of FIG. 1, FIG. 3 is a perspective view showing another embodiment of the present invention, and FIGS. 4 and 5 show still another embodiment of the present invention. Perspective view, FIG. 6 shows the fifth view
FIG. 7 is a sectional end view taken along the line BB, and FIG. 7 is a perspective view showing a usage state of the locking tool of the present invention. 1 ... Locking tool, 2 ... Convex part, 3 ... Recessed part, 12 ... Inclined part, 5 ... Handle.

Claims (1)

[Scope of utility model registration request] 1. A substantially C-shaped retainer for elastically sandwiching a cylindrical column, wherein a convex portion is provided on the back surface thereof, and an inclined portion inclined upward toward the inside is continuously provided above the convex portion. A strut locking device for a straw net, which is characterized in that