JP3211003U - Textile playground equipment net - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the protrusion of a mesh crossing part, and at the same time, to reduce the stretch of the rope and maintain the tension state, and to make a good contact with a partially concentrated other object or the contact point with the ground Dispersed to provide a fiber play net with excellent durability. SOLUTION: Twelve strands 3 made of polyester fibers are combined into two pairs, and six of the three pairs are twisted in the right twist, and the other three pairs are twisted in the left twist. The obtained rope 2 is extended vertically and horizontally to form a knitted leg 4, and at each crossing point, the vertical mesh leg 4A and the horizontal mesh leg 4B are connected to the knot portion 5 without knots. And braided to form a square mesh 6. [Selection] Figure 1

Description

The present invention relates to a so-called fiber playground equipment net mainly made of fibers used for amusement parks, parks, and field athletics or indoor playground equipment.

This fiber playground net has a fiber rope, and has a rectangular or rhomboid cell, and one mesh (the size of the cell) is generally 40 to 100 mm. It is made in various sizes, with a size such as 200 mm in some cases. The material of the fiber rope is vinylon, polyester, polypropylene, etc., and the diameter is 6-20
The thing around mm is employ | adopted (refer patent documents 1-3, FIG. 22). Furthermore, as the structure of this fiber rope, generally, a three-strand rope formed by twisting three strands is generally used in many cases.

JP 2000-116959 A JP 08-38649 A JP-A-11-299922

In many cases, the conventional rope net using a three-pipe rope is mainly a knotted net (see FIG. 22). That is, it is formed by connecting the intersections of the nets of the net.
As a result, this knot protrudes, and this nodule site is liable to come into contact with other objects, and there is a drawback that it wears out early. In addition, since the three-strike rope is single-twisted, it is easy to produce kinks, and it is difficult to handle because it loses its shape. Furthermore, it has a property of being easily extended, and contact with the ground or the like also occurs. For example, when it is used for fall protection, its original purpose cannot be achieved and it causes wear.

Therefore, as a result of various considerations in order to solve the above-mentioned problems, the present invention considers that firstly to eliminate the low durability due to wear, and to obtain a mesh with knots. By stopping the process and adopting the no-knot method, the conventional partially concentrated wear can be successfully eliminated. In addition, it was possible to successfully eliminate the occurrence of kink and elongation caused by changes in twisting during use by changing the type of rope, and we were able to obtain a product that was almost satisfactory. To do.

Therefore, the object of the present invention is to eliminate the protrusion of the crossing part of the mesh, and at the same time, to reduce the stretch of the rope and maintain the tension state, and to concentrate on the partially concentrated other objects and the ground. It is to provide a fiber playground equipment net excellent in durability by dispersing the contact points.

In order to achieve the above object, a fiber playground equipment net according to claim 1 of the present invention is a 12-strand rope formed by twisting 12 strands obtained by twisting multifilament yarns of chemical fibers. The knitting leg is formed as a nodule shape at the knot portion.

In the fiber playground equipment net, the chemical fiber according to claim 1 is a polyester fiber (claim 2).
).

The fiber playground equipment net according to the present invention is used by being appropriately stretched on a structure as a playground equipment provided outdoors or indoors, for example, as a staircase, a floor, or a wall as shown in FIG.

Thus, in the fiber playground equipment net according to claims 1 and 2 of the present invention, first, unlike the conventional structure, by forming the playground equipment net 1 without knots, the crossing portion of the mesh 6, that is, the knot portion. 5 can be eliminated, and the defect of the conventional structure that wear is concentrated on the knotted portion can be solved well. In addition, since the knot portion 5 of the knitting leg 4 is no knot,
The stress load applied to the playground equipment net 1 can be well distributed throughout the playground equipment net 1, the durability is improved, and a safer playground equipment net 1 can be provided. Furthermore, the occurrence of kinks and the occurrence of elongation caused by changes in twist during use can be successfully eliminated by adopting twelve strikes and polyester fibers, and a satisfactory product can be provided. It was.

It is a drawing substitute photograph showing the part of the fiber playground equipment net concerning the present invention. FIG. 2 is a drawing substitute photograph showing an enlarged main part of FIG. 1. FIG. It is explanatory drawing at the time of applying the fiber playground equipment net concerning this invention to a park playground equipment. It is a drawing substitute photograph which shows the whole plane of the sample 1 for testing elongation rate. FIG. 5 is a drawing-substituting photograph showing an enlarged plane of a main part of FIG. 4. It is a drawing substitute photograph figure which shows the whole plane of the sample 2 for testing elongation rate. FIG. 6 is a drawing-substituting photograph showing an enlarged plane of a main part of FIG. 5. It is a drawing substitute photograph which shows the whole plane of the sample 3 for testing elongation rate. It is a drawing substitute photograph which shows the enlarged plane of the principal part of FIG. It is a drawing substitute photograph which shows the whole plane of the sample 4 for testing elongation rate. It is a drawing substitute photograph which shows the enlarged plane of the principal part of FIG. It is a drawing substitute photograph which shows the whole plane of the comparative sample 1 for testing elongation rate. 13 is a drawing-substituting photograph showing an enlarged plane of a main part of FIG. It is a drawing substitute photograph which shows the whole plane of the comparative sample 2 for testing elongation rate. It is a drawing substitute photograph which shows the enlarged plane of the principal part of FIG. It is a drawing substitute photograph which shows the external appearance of the jig | tool for a tension test. It is a drawing substitute photograph showing a tensile testing machine. It is a drawing substitute photograph which shows the whole plane of the unraveled state of the comparative sample 1 at the end of the test. FIG. 20 is a drawing-substituting photograph showing an enlarged plane of the unraveled portion of FIG. 19. 6 is a drawing-substituting photograph showing an entire plan view of the unwound state of comparative sample 2 at the end of the test. FIG. 22 is a drawing-substituting photograph showing an enlarged plane of the unraveled portion of FIG. It is the elements on larger scale of the conventional rope net.

Hereinafter, although the Example of this invention is described in detail using drawing, drawing substitute photograph, this invention is not limited to these.

As shown in FIGS. 1 and 2, the rope 2 constituting the fiber play equipment net 1 of the present invention employs a multifilament yarn of a chemical fiber, preferably a polyester fiber. The filament yarn is twisted to obtain 12 strands 3, two of these 12 strands 3 are paired to obtain 6 pairs, then 3 pairs are right-twisted, and the other 3 pairs are A fiber rope having an appropriate diameter was formed by twisting the left-hand twist.

The resulting rope 2 has significantly improved elongation, strength and wear resistance compared to the conventional three- and eight-punch ropes, and in particular, kink does not occur compared to the three-punch ropes. It is easy to handle because it does not lose its shape and is easy to handle in the manner of a cross rope.

As shown in FIGS. 1 and 2, the playground equipment net 1 has the rope 2 obtained as described above.
The knitting legs 4 are formed by extending in the vertical and horizontal directions, and at each intersection, the vertical net legs 4A and the horizontal net legs 4B are braided so as to form a square net 6 with no knots 5 connected. The
More specifically, the six pairs of strands 3 of the vertical mesh legs 4A in the knot portion 5 are expanded by forming three pairs of halves to form through holes, and the horizontal mesh legs 4B are formed therein. Is inserted. Further, the six pairs of strands 3 of the horizontal mesh legs 4B are expanded in three half pairs to similarly form through holes, and the vertical mesh legs 4A are inserted therethrough. Thereby, a penetrating no-node is obtained.

Examples of the chemical fiber filament include fibers such as polyethylene, polypropylene, polyamide, fluorine fiber, tetron, vinylon, and biodegradable polymer in addition to polyester. The polyester most suitable for the intended purpose of the present invention is polyester. Fiber.

As the mesh 6 of the net 1, various types such as a rectangle, a rhombus, a polygon, a circle, an ellipse, and a parallelogram are adopted as necessary. Moreover, one scale (the size of the grid) is generally 40 to
Various sizes of up to 200 mm are appropriately employed. Furthermore, the rope diameter is 6 ~
An appropriate one is adopted from around 20 mm.

Needless to say, a staggered type, a turtle shell type or the like is employed as the nodular mode of the nodule portion 5 in addition to the through type, although not shown.

  The resulting playground equipment net 1 is appropriately stretched on the playground equipment 7, as shown in FIG.

Example 1: Athletic net polyester monofilaments were twisted together to obtain 12 strands.
Two strands 3 were made into a pair to obtain 6 pairs, then 3 pairs were twisted right and the other 3 pairs were twisted left to obtain a fiber rope having a diameter of 8 mm. . The obtained fiber rope is extended vertically and horizontally to form a knitting leg, and at each intersection, the nodule portion of the vertical knitting leg and the horizontal knitting leg is used as a nodule, and a square mesh having a mesh size of 40 mm is exhibited. Braided so that the length and width are 20 each.
Two 0 mm test pieces (Sample Nos. 1 and 2) were produced (refer to the drawing substitute photos shown in FIGS. 4 to 7).
Example 2: Athletic net Two test pieces (sample No. 3 and 4) having a rope diameter of 7 mm in the same manner as in Example 1.
) Was prepared (refer to the drawing substitute photos shown in FIGS. 8 to 11).
Comparative Example 1: A monofilament of athletic net polyester was twisted to obtain three strands, and these three were twisted into three to obtain a fiber rope having a diameter of 7 mm. The obtained fiber rope is extended vertically and horizontally to form a knitting leg, and at each intersection, the nodule portion of the vertical knitting leg and the horizontal knitting leg is used as a nodule, and a square mesh having a mesh size of 40 mm is exhibited. Braided so that the length and width are 20 each.
Two test pieces of 0 mm (Comparative Sample No. 1 and 2) were prepared (see the drawing substitute photos shown in FIGS. 12 to 15).

A 500 kg load was applied to each of the obtained test pieces, and the elongation from no load was measured.
Test method: Jigs are attached to both ends of each test piece (drawing substitute photograph 16), and first, the length in two squares at no load is measured (two-point marking is attached). Next, both ends of this jig are fixed to a tensile testing machine (drawing substitute photo 17), and then the test piece is pulled by applying a tensile load up to 5 kN (about 500 kg), and the length in the above 2 squares is measured at 5 kN. And the elongation at 5 kN is obtained. Thereafter, the load was returned to zero, the test piece was removed from the testing machine, and the dimensions of the two masses under the load were measured again.
Testing machine: Amsler vertical tensile testing machine (T-2081)
The results are shown in Table 1.

From the result of this tensile test, as shown in Table 2, the sample numbers 1 and 2 of the comparative example are both 5
The load of kN could not be endured, and in sample No. 1, the knot was unraveled at 4.0 kN, and in sample No. 2, breakage occurred at 2 kN, and the unraveling was completely separated (Fig. 18-2
2) Furthermore, it was found that the elongation rate was remarkably low and lacked flexibility.

On the other hand, as shown in Table 1, the elongation percentages of the four test pieces according to this example are all within a range of 47 to 57.5% at a load of 5 kN, and are sufficient for the load. The net legs were not broken, and the knots were not broken or broken. Moreover, it was satisfactory in the range of 16 to 34% even immediately after returning to no load.

DESCRIPTION OF SYMBOLS 1 ... Playground equipment net 2 ... Rope 3 ... Strand 4 ... Knitting leg 4A ... Vertical knitting leg
4 B ... Horizontal knitting legs 5 ... Knot section 6 ... Mesh 7 ... Playground equipment

Claims (2)

A fiber playground equipment net in which a knitting leg made of twelve strands formed by twisting twelve strands obtained by twisting multifilament yarns of chemical fibers is formed in a knotless shape at its knot.   The fiber playground equipment net according to claim 1, wherein the chemical fiber is a polyester filament.