JPS5822778Y2 - ball protection net - Google Patents

Description

[Detailed description of the invention] The present invention relates to a ball-prevention net, which is made by stringing wires to poles erected at appropriate intervals around the outer periphery of a playing field where ball games such as baseball or soccer are played, and attaching a ball-prevention net to the wires. It is something.

Conventional examples of this type of ball protection net are shown in FIGS. 1 and 2.

FIG. 1 is a front view, and FIG. 2 is a plan view. In the figure,
1 is a concrete pole, 2 is a pole support at both ends,
3 is a wire stretched between the poles, 4 is a metal band for attaching and fixing the wire 3 to the poles, and 5 is a ball protection net.

As shown in the figure, the band 4 that attaches and fixes the wire 3 to the poles 1 at both ends is attached to the side of the pole due to the tension of the wire, so the net 5 attached to the wire is As shown in Figure 2, the net extends from the sides of the poles at both ends to the front of the adjacent pole.
There is a problem that the net comes into contact with the net and is constantly rubbed by the wind and is damaged, and also because the net is not flat, it spoils the aesthetic appearance.

In addition, when attaching the wires of the band 4 to the poles at both ends, it is possible to install fixing bolts in the poles so that the wires are attached to the front side of the poles, but since the holes are drilled in the poles, the strength of the bolts is weakened and the bolts are attached. has the disadvantage of being more expensive.

The purpose of the present invention is to solve the above-mentioned conventional problems by using metal fittings with a simple structure, and to provide a ball-prevention net that allows wire tensioning work to be performed easily, easily, and quickly. be.

The ball-prevention net of the present invention uses special fittings for tensioning and fixing wires to the poles, ie, wire passing fittings and wire retaining fittings.

This wire-drawing fitting is attached to the outer surface of the band that is wrapped around and fixed to the pole, and on a plane parallel to the outer surface, the wire is attached to two points equidistant from each other at right angles to each other. It has a structure with a pulley at which a wire can be hung.

In addition, the ``Tsuya fastening metal fittings'' are attached to the outer surface of the band that is wrapped around and fixed to the pole, and two supports that are attached on a plane parallel to the outer surface are pivotable around the axis. Each wire has a metal fitting at its tip to hold the wire.

In the ball prevention net of the present invention, the wires for fixing the net surroundings are attached to the two poles at both ends and the middle pole, and the wire retaining fittings are provided at at least one of the locations, and the wires are attached to the two poles at both ends. For the rest of the installation, install the wire passing through fittings at the locations, hang the wires that have passed through the rings tied to the edge rope of the net every few 1OcfrL onto the pulleys of the wire passing through fittings, and attach the wire holding fittings. It is characterized by being fixed via a turnbuckle.

Hereinafter, the present invention will be explained in detail with reference to embodiments illustrated in the drawings.

3 and 4 are a front view and a plan view showing an embodiment of the present invention, and the same parts as in FIGS. 1 and 2 are given the same reference numerals.

In the figure, numerals 6 and 7 are a wire lead-in fitting and a wire retaining fitting, which are the main features of the present invention, the details of which are shown in FIGS. 5 and 6.

In both FIGS. 5 and 6, A shows a front view and B shows a plan view.

First, in Fig. 5, reference numeral 8 is a support, which has a structure in which a second iron plate in the shape of a right isosceles triangle is joined together at the right angle apex, and the base part is spaced apart by at least the thickness of the wire. It is pivotally attached to the band 4 by bolts 10 at the apex portion, and pulleys 9 are supported at the two apex portions at the bottom.

A wire 3 indicated by a chain line in the figure is hung on this pulley 9.

Referring now to FIG. 6, two supports 11 are pivotally attached to the band 4 with bolts 10.

The support 11 has a structure in which two rectangular iron plates are joined together at one half in the longitudinal direction, and the other half is spaced apart by at least the thickness of the wire, and a turnbuckle 13 is attached to the tip of the support 11. A bolt shaft 12 for hooking the hook is attached.

Since the support 11 can be pivoted around the bolt 10 when attached, it is possible to hold the wire 3 in the linear force direction as shown by the solid line in FIG. It can also be held back.

Therefore, the wire retainer 7 can be used for retaining the wire in the perpendicular direction at the poles at both ends, and can also be used for retaining the wire in the straight direction at the intermediate pole.

In the embodiment shown in FIG. 3, the wire holding fitting 7 is installed at the bottom of the middle pole, and the wire passing fitting 6 is installed at the top and bottom of the poles at both ends.

In short, the wire holding fitting I is installed at at least one of the wire attachment points of the poles at both ends or the middle pole, and the wire pulling fitting 6 is installed at the remaining attachment points of the poles at both ends.
should be installed.

Moreover, since the turnbuckle 13 is often installed adjacent to the wire retaining metal fitting 7, it is preferable to install it in a place where the turnbuckle can be easily adjusted, that is, at the bottom of the pole.

Note that the number of wire 9 fasteners to be installed is determined by the length of the wire to be stretched, and if it is long, it cannot be adjusted with two turnbuckles, so the number of wire 9 fasteners to be installed will be two or more accordingly.

14 is an edge rope (made of the same material as the net) attached to the periphery of the net 5, and 15 is a rope of several tens of crr attached to the edge rope 14.
The wire 3 is a metal ring bound for each L, and the wire 3 passes through the ring 15.

The ball-prevention net of the present invention requires a wire lead-in fitting 6 provided on the poles at both ends, and a wire lead-in fitting 6 provided on the poles at both ends to attach and fix the net. A wire passed through a ring tied to the edge rope around the net is hung on a conventional general wire support 16 provided on the middle pole, and finally a wire holding fitting provided at the bottom of the middle pole. 7, two turnbuckles from both sides 13
The wire is tightened by adjusting the turnbuckle 13.

Therefore, the stretched net surface becomes one plane as shown in FIG. 4, does not come into contact with the support columns 2, and has a clean appearance.

Furthermore, by using the wire pull-through fittings 6 at the four corners of the net on the poles at both ends, the wire tensioning work can be performed easily and quickly.

In the above-mentioned implementation row, the support 8 of the wire lead-in fitting 6 is perpendicular to the support 8.
Although equilateral triangular iron plates were used, as another example, as shown in Fig. 7, two rectangular iron plates 1 of equal length were used.
7 can be combined to support the pulley 9, and the attachment may be a simple structure in which the shafts 10 are connected at right angles to each other by supporting iron plates 18.

Since the wire threading fitting 6 according to the present invention uses two pulleys, the bending angle of the wire 3 at the pulley 9 is 135° as shown in FIG. 8A, and the pulley 1 shown in FIG. Since the bending angle is larger and gentler than about 90° in the case of the wire, the bending strain applied to the wire can be reduced, and the life of the wire can be extended accordingly.

In addition, the two pulleys of the wire passing-through fitting 6 are installed at positions that are perpendicular to each other and equidistant from the axis (i.e., the shaft is installed at the right-angled apex of a right-angled isosceles triangle, and the pulley is installed at the two apexes of the base). (same as providing a) is due to the following advantages.

That is, compared to the equilateral triangle shape shown in Figure 8C or the right scalene triangle shape shown in the same figure, the vertical wire can be attached to the center of the pole and the horizontal wire can be attached to a higher position. Also, since the metal fittings are installed without tilting, it looks aesthetically pleasing.

As described above, according to the present invention, the net surface can be made into one plane by using metal fittings with a simple structure, so it is possible to prevent damage to the net due to contact with the pole supports, and also to prevent the net from being damaged in appearance. The above aesthetic appearance can be obtained, and the wire and net tensioning work can be performed easily and quickly.

[Brief explanation of the drawing]

1 and 2 are a front view and a plan view showing the conventional ψl,
3 and 4 are a front view and a plan view showing an embodiment of the present invention, FIG. 5 is a front view and a plan view of a wire guide fitting according to the present invention, and FIG. 6 is a front view and a plan view of a wire guide fitting according to the present invention. A front view and a plan view of the fastener, FIG. 7 is a front view and a plan view showing another embodiment of the wire passing fitting according to the present invention, and FIG. 8 is for explaining the advantages of the wire passing fitting according to the present invention. This is a diagram. 1...pole, 2...post, 3...
...Wire, 4...Band that wraps around the pole and fixes it, 5...Net, 6...Wire threading fitting, 7...Wire Retaining metal fittings, 9...
...Pulley of the wire pulling fitting, 12...Fixing device of the wire retaining fitting, 13...Turnbuckle.

Claims (1)

[Scope of utility model registration request] In a ball protection net, in which wires are stretched around poles set up at appropriate intervals around the perimeter of a playing field, and ball protection nets are attached to these wires, the area surrounding the net on the two poles at both ends and the middle pole. The fixing wire is attached to at least one of the locations, and the pole wrapping is attached to one location on the outside surface of the band to be fixed, and the ends of two supports are pivotable on a plane parallel to the outside surface. are provided with wire retaining fittings each having a metal fitting for securing the wire; the remaining attachments on the two poles at both ends are attached to the outer surface of the band to be fixed; The installation is carried out in two positions equidistant from each other at right angles to the point, with a wire lead-in fitting having a pulley on which the wire can be hung; on the edge rope of the net there are several tens of
A ball-prevention net characterized in that a wire passing through a ring bound for each crIL is hung on a pulley of the wire lead-in fitting and fixed to the wire retaining fitting via a turnbuckle.