Insect netting system and method for preventing pest intrusion

Abstract

To provide an insect-proof net that can efficiently vibrate the whole insect-proof net to inhibit a pest insect from entering, and to provide an insect-proof net system, a method for inhibiting a pest insect from entering, and a method for manufacturing an insect-proof net.SOLUTION: An insect-proof net 10 includes: a plurality of first yarns 11 extending along a first direction D1 and arranged along a second direction D2 orthogonal to the first direction D1; and a plurality of second yarns 12 extending along the second direction D2 and arranged along the first direction D1, where some of the second yarns 12 are high-tension lines 12m.SELECTED DRAWING: Figure 3

Description

Technical Field

[0005]

[0001] The present invention relates to an insect-proof net, an insect-proof net system, a method for preventing pests from invading, and a method for manufacturing an insect-proof net.

Background Art

[0002] To prevent pests from invading while ensuring ventilation in the side windows of a horticultural facility, an insect-proof net with relatively small mesh size (mesh size of 0.2 to 1.0 mm) may be used. In Patent Document 1, an insect-proof net woven with flexible warp and weft threads is disclosed. In Patent Document 2, a technique is disclosed in which an insect-proof net installed at an opening of a facility is vibrated to suppress the invasion of microorganisms having a size that can pass through the mesh of the insect-proof net.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] To prevent pests from invading, the insect-proof net is vibrated. At this time, the vibration by the vibrator may be absorbed by the flexible threads constituting the insect-proof net. Then, it is impossible to efficiently vibrate the entire insect-proof net with a small number of vibrators. This becomes a problem when applying the above technology to a large-scale horticultural facility, for example.

[0005] The present invention has been made in view of the circumstances described above, and aims to provide an insect-proof net, an insect-proof net system, a method for preventing insect intrusion, and a method for manufacturing and installing an insect-proof net, which can efficiently vibrate the entire insect-proof net to prevent the intrusion of pests. [Means for solving the problem]

[0006] <1> An insect-proof net according to embodiment 1 of the present invention comprises a first thread extending along a first direction and arranged in a plurality along a second direction perpendicular to the first direction, and a second thread extending along the second direction and arranged in a plurality along the first direction, wherein a portion of the plurality of second threads is a high-tensile wire.

[0007] According to this invention, some of the multiple second threads are high-tensile wires. As a result, even when the insect net is vibrated, the vibrations are transmitted throughout the entire insect net by the inflexible high-tensile wires. Therefore, it is possible to suppress the absorption of the vibrations by the insect net. Thus, even when the insect net is made large, the entire insect net can be efficiently vibrated with a small number of vibrators. For this reason, even when the insect net according to this embodiment is applied to a large horticultural facility, the vibrations can be efficiently transmitted throughout the entire insect net. Thus, the insect net can prevent the entry of pests. In addition, for example, if the mesh size of the insect net is made larger, ventilation can be ensured, leading to an improvement in the working environment.

[0008] <2> In the insect-proof net according to aspect 2 of the present invention, the high-tensile wire has a circular cross-section, as described in aspect 1 of the present invention.

[0009] According to this invention, the high-tensile wire has a circular cross-section. This allows, for example, the cross-sectional area of ​​the high-tensile wire to be the same as that of the second thread other than the high-tensile wire, so that it can be used in manufacturing insect nets without changing the design of existing looms. Furthermore, it is possible to prevent the insect net from becoming difficult to roll up for storage due to the high-tensile wire. Thus, the storage of the insect net can be ensured.

[0010] <3> In the insect-proof net according to embodiment 3 of the present invention, the high-tensile wire has a rectangular cross-section, as described in embodiment 1 of the present invention.

[0011] According to this invention, the high-tensile wire has a rectangular cross-section. This allows, for example, the high-tensile wire to have a cross-sectional length equal to the diameter of the second thread other than the high-tensile wire, and to be arranged so that the cross-sectional length is parallel to the first direction, thereby ensuring that the storage capacity of the insect net is not impaired even if the cross-section of the high-tensile wire becomes larger.

[0012] <4> An insect-proof net system according to aspect 4 of the present invention comprises an insect-proof net according to any one of aspects 1 to 3, a tensioning means for applying tension to the insect-proof net, and a vibration means for vibrating the insect-proof net.

[0013] This invention provides a tensioning means for applying tension to an insect-proof net and a vibration means for vibrating the insect-proof net. This allows the insect-proof net, which is under tension from the tensioning means, to be vibrated by the vibration means. Therefore, the insect-proof net can be vibrated efficiently. Furthermore, it can flexibly respond to expansion and contraction of high-tension wires due to temperature changes associated with seasonal fluctuations, and maintain a state in which tension is always applied to the insect-proof net.

[0014] <5> The insect-proof net system according to aspect 5 of the present invention is the insect-proof net system according to aspect 4, wherein the tensioning means is a spring.

[0015] According to this invention, the tensioning means is a spring. This makes it possible to continuously apply tension to the insect net without using electricity or other means. Furthermore, even if the dimensions between the support posts on which the insect net system is installed change due to aging or deterioration of the facility where the insect net system is installed (for example, a horticultural facility), the tension can be maintained.

[0016] <6>The pest invasion prevention method according to Aspect 6 of the present invention is a pest invasion prevention method using the insect-proof net system according to Aspect 4 or Aspect 5, wherein tension is applied to the high-tension wire by the tension means, and the high-tension wire is vibrated by the vibration means.

[0017] According to this invention, tension is applied to the high-tension wire by the tension means, and the high-tension wire is vibrated by the vibration means. Thereby, it is possible to vibrate while preventing the insect-proof net from sagging. Therefore, the insect-proof net can be efficiently vibrated. Therefore, it is possible to efficiently suppress the invasion of pests.

[0018] <7>The method for manufacturing an insect-proof net according to Aspect 7 of the present invention is a method for manufacturing an insect-proof net according to any one of Aspects 1 to 3, comprising: a first step of arranging a plurality of the high-tension wires at intervals in a part of the plurality of second threads arranged in the first direction; and a second step of weaving the plurality of second threads with the plurality of first threads.

[0019] According to this invention, a plurality of second threads partially including high-tension wires are woven with a plurality of first threads. Thereby, the insect-proof net according to this aspect can be manufactured by an existing loom. Therefore, it is not necessary to change the design of the loom, and the manufacturing cost can be suppressed.

Effects of the Invention

[0020] According to the present invention, it is possible to provide an insect-proof net, an insect-proof net system, a pest invasion prevention method, and a method for manufacturing an insect-proof net that can efficiently vibrate the entire insect-proof net to prevent pest invasion and can ensure air permeability.

Brief Description of the Drawings

[0021] [Figure 1] It is a horticultural facility where the insect-proof net system according to the present invention is provided. [Figure 2] It is a schematic diagram of the insect-proof net system according to the present invention. [Figure 3] It is an enlarged view of part III shown in FIG. 2. [Figure 4] It is the first example of the high-tensile wire woven into the insect-proof net. [Figure 5] It is the second example of the high-tensile wire woven into the insect-proof net. [Figure 6] It is the first example of the relationship between the insect-proof net and the support column of the horticultural facility. [Figure 7] It is the second example of the relationship between the insect-proof net and the support column of the horticultural facility. [Figure 8] It is a conventional example of the relationship between the insect-proof net and the support column of the horticultural facility.

Mode for Carrying Out the Invention

[0022] Hereinafter, referring to the drawings, an insect-proof net 10, an insect-proof net system 100, a method for preventing pests from entering, and a method for manufacturing the insect-proof net 10 according to an embodiment of the present invention will be described. As shown in FIG. 1, the insect-proof net system 100 is arranged, for example, on the side windows or skylights of the horticultural facility H. The insect-proof net system 100 is used to prevent pests from entering the horticultural facility H. The insect-proof net 10 is required to be able to prevent pests and ensure air permeability. In the present embodiment, the insect-proof net system 100 satisfies the above requirements according to the following aspects.

[0023] As shown in FIG. 2, the insect-proof net system 100 includes an insect-proof net 10, a tensioning means 20, and a vibrating means 30. The insect-proof net 10 is arranged to cover the side windows or skylights of the horticultural facility H. FIG. 2 shows an example in which the insect-proof net 10 is arranged on the side window of the horticultural facility H. The insect-proof net 10 is, for example, a fabric formed by warp (longitudinal yarn) and weft (transverse yarn). The warp is a yarn extending in the longitudinal direction of the fabric. The weft is a yarn extending in the short transverse direction of the fabric. Hereinafter, when explaining the direction of the insect-proof net 10, the direction in which the weft extends is described as the first direction D1, and the direction in which the warp extends is described as the second direction D2. The size of the insect-proof net 10 is, for example, 1.2 m in length in the first direction D1 and 20 m in length in the second direction D2.

[0024] The insect-proof net 10 comprises a first thread 11 and a second thread 12. The insect-proof net 10 is a woven fabric made of the first thread 11 and the second thread 12. As shown in Figure 3, the first thread 11 extends along the first direction D1. In other words, the first thread 11 is the weft thread. Multiple first threads 11 are arranged along the second direction D2, which is perpendicular to the first direction D1. The spacing between the multiple first threads 11 is, for example, 0.2 mm to 1.0 mm. The first thread 11 is preferably made of a material that is resistant to UV degradation. The first thread is, for example, a resin thread such as polyethylene.

[0025] The second thread 12 extends along the second direction D2. In other words, the second thread 12 is a warp thread. Multiple second threads 12 are arranged along the first direction D1. The spacing between the multiple second threads 12 is, for example, 0.2 mm to 1.0 mm. The second thread 12 is, for example, a resin thread such as polyethylene. In addition, the multiple second threads 12 include multiple high-tensile wires 12m arranged at intervals. The spacing between the first threads 11 and the second threads 12, that is, the mesh size of the insect net 10, may be made larger depending on the intended use of the insect net 10.

[0026] The high-tensile wire 12m has the role of transmitting vibrations (described later) input from the vibration means 30 to the entire insect-proof net 10. In this embodiment, the high-tensile wire 12m is treated as a warp thread of the woven insect-proof net 10, similar to the second thread 12 made of resin yarn. A material that does not stretch easily under tension is preferably used for the high-tensile wire 12m. For example, non-stretchable materials such as metal wire, aramid fiber, Kevlar, and carbon fiber are preferably used for the high-tensile wire 12m. The cross-section of the 12m high-tensile wire is circular, for example, as shown in the first example in Figure 4. This is preferable as it allows the insect-proof net 10 according to this embodiment to be manufactured using an existing loom. The cross-section of the 12m high-tensile wire may be rectangular in shape, with its longer side aligned with the planar space formed by the insect net 10, as shown in the second example in Figure 5. This allows for a larger area to be occupied by a single 12m high-tensile wire within the planar space formed by the insect net 10.

[0027] The spacing at which the high-tension wires 12m are arranged in the first direction D1 is controlled, for example, by the dimensions of the first direction D1. That is, the high-tension wires 12m are arranged at intervals of 10mm to 600mm among the multiple second threads 12 arranged along the first direction D1. The spacing at which the high-tension wires 12m are arranged in the first direction D1 may be controlled by the number of second threads 12. That is, the high-tension wires 12m may be arranged such that, for example, one high-tension wire 12m is present for every 50 to 3000 second threads 12 arranged along the first direction D1. Please note that the specific intervals mentioned above are merely examples, and other intervals may be adopted as appropriate.

[0028] The shape of the cross-sectional area, the size of the cross-sectional area, and the spacing of the 12m high-tensile wires are appropriately changed according to the requirements of the insect-proof net system 100. For example, if the dimension D2 in the second direction of the insect net 10 becomes longer, the cross-sectional area of ​​the high-tensile wire 12m may be increased or the spacing may be reduced.

[0029] When the dimension of the insect net 10 in the second direction D2 is kept constant, the spacing may be increased in accordance with increasing the cross-sectional area of ​​the high-tensile wire 12m. Conversely, the spacing may be decreased in accordance with decreasing the cross-sectional area of ​​the high-tensile wire 12m. Making the cross-section of the high-tensile wire 12m circular is suitable when decreasing the cross-sectional area of ​​the high-tensile wire 12m. Making the cross-section of the high-tensile wire 12m rectangular is suitable when increasing the cross-sectional area of ​​the high-tensile wire 12m.

[0030] Multiple high-tension wires 12m are arranged at intervals in the first direction D1. In this case, the high-tension wires 12m do not need to be provided near both ends of the first direction D1. For example, if the dimension of the insect net 10 in the first direction D1 is 1.2m, the high-tension wires 12m do not need to be provided in the area 200mm from both ends of the first direction D1 toward the center. This makes it easier to sag the ends of the insect net 10 in the first direction D1, making it easier to fix to the horticultural facility H.

[0031] The tensioning means 20 applies tension to the insect net 10. Specifically, the tensioning means 20 applies tension to the high-tension wire 12m of the insect net 10. This prevents the insect net 10 from sagging and facilitates the propagation of vibrations from the vibration means 30 throughout the entire insect net 10. As shown in Figure 2, the tensioning means 20 is provided at one end of the insect net 10 in the second direction D2. The tensioning means 20 and the end of the insect net 10 are connected, for example, by a wire. The tensioning means 20 is, for example, a known spring. This contributes to continuously applying tension to the insect net 10 without using electricity or the like. It also allows for flexible adaptation to the expansion and contraction of the high-tension wire 12m due to temperature changes associated with seasonal variations.

[0032] The vibration means 30 vibrates the insect net 10. Specifically, the vibration means 30 vibrates the high-tension wires 12m of the insect net 10. The high-tension wires 12m then propagate the vibrations throughout the entire insect net 10. As a result, the vibration means 30 vibrates the insect net 10. As shown in Figure 2, the vibration means 30 is provided at the other end of the insect net 10 in the second direction D2. The vibration means 30 and the end of the insect net 10 are connected, for example, by a wire.

[0033] The vibration means 30 can preferably be any type of vibrator. The vibration means 30 vibrates the high-tension wire 12m in plane along the direction in which the high-tension wire 12m extends. The vibration means 30 can be, for example, a purely mechanical, hydraulic, or electric vibrator that drives a crank or eccentric disc, an excitation type vibrator, a reciprocating motor, or a super magnetostrictive vibrator. As a result, the insect-proof net 10 vibrates along the second direction D2 in the planar space formed by the insect-proof net 10 by the vibration means 30.

[0034] (Methods to prevent pest infestation) Next, a method for preventing the entry of pests using the insect-proof net system 100 according to this embodiment will be described. In this embodiment, the insect-proof net 10 is arranged so that the second direction D2 is aligned with the horizontal direction, as shown in Figure 2. First, tension is applied to the high-tension wire 12m by the tensioning means 20. Specifically, as shown in Figure 2, one end of the insect net 10 in the second direction D2 is connected to one end of the tensioning means 20. The other end of the tensioning means 20 is fixed to, for example, the wall of the horticultural facility H. In this state, the other end of the insect net 10 is pulled in the direction in which the tensioning means 20, which is a spring, extends. This causes the tensioning means 20 to extend, generating a restoring force and applying tension to the insect net 10.

[0035] Next, the other end of the insect net 10 in the second direction D2 is connected to the vibrating means 30. At this time, the position of the vibrating means 30 is adjusted so that tension can always be applied to the insect net 10 by the tensioning means 20. Then, the vibration means 30 vibrates the high-tension wire 12m. The vibration added by the vibration means 30 is, for example, a reciprocating motion parallel to the second direction D2. However, in this embodiment, the following forms are also included as vibrations. That is, the vibration means 30 rotates the other end of the insect-proof net 10 in the second direction D2 within the planar space formed by the insect-proof net 10. Then, the rotation approximates simple harmonic motion at one end of the insect-proof net 10 in the second direction D2. Such forms are also included as vibrations. Furthermore, as will be described later, the four corners of the insect-proof net 10 are fixed to the support posts of the horticultural facility H. To prevent the vibration of the insect-proof net 10 from being hindered, it is preferable to attach rod-shaped members B to both ends of the insect-proof net 10 in the direction of vibration (horizontal direction in Figure 2) so as to be fixed to the high-tension wire 12m. When attaching the tensioning means 20 and the vibration means 30 to the insect-proof net 10, it is preferable to attach them by connecting the rod-shaped members with the tensioning means 20 and the vibration means 30 using tensioning cables S. In this state, it is preferable to vibrate the insect-proof net 10 by vibrating the rod-shaped members B with the vibration means 30.

[0036] (Method for manufacturing insect-proof net 10) Next, a method for manufacturing the insect-proof net 10 according to this embodiment will be described. The method for manufacturing the insect-proof net 10 comprises a first step and a second step. The first step is to place multiple high-tensile wires 12m at intervals on a portion of the multiple second threads 12 arranged in the first direction D1. For example, for the second threads 12 arranged along the first direction D1, one in ten threads is a high-tensile wire 12m. The spacing of the high-tensile wires 12m can be arbitrarily determined by conditions such as the dimensions of the insect-proof net 10 in the first direction D1 and the second direction D2, and the thickness of the first threads 11 and the second threads 12. The second step is to weave together the multiple second threads 12 arranged in the first step using multiple first threads 11. In other words, when the first threads 11 intersect the multiple second threads 12 at a right angle, the first threads 11 are arranged so that they alternately pass through one side and the other side of adjacent second threads 12. By arranging multiple first threads 11 along the second direction as described above, an insect-proof net 10 is formed.

[0037] (How to install insect net 10) Next, a method for installing the insect-proof net 10 according to this embodiment on the horticultural facility H will be described. In this embodiment, the horticultural facility H is assumed to be a pipe house with multiple pipe supports P arranged in a row. The insect net 10 is placed on the side window of the horticultural facility H. The insect net 10 is positioned so that its second direction D2 is aligned horizontally. As shown in Figure 6, the insect net 10 is positioned so as to be in contact only with the parts of the multiple support posts P that face outwards from the horticultural facility H. The insect net 10 may also be positioned so as to be in contact only with the parts of the multiple support posts P that face inwards from the horticultural facility H, as shown in Figure 7.

[0038] In conventional horticultural facilities H, the insect net 10 was arranged so as shown in Figure 8 that it alternately passed through the side of the multiple support posts P facing the outside of the horticultural facility H and the side facing the inside. In this embodiment, if the insect net 10 is arranged in the conventional manner, it is not possible to vibrate the insect net 10 efficiently. Therefore, it is preferable that the insect net 10 in this embodiment be arranged in the manner described above. In order for the insect net 10 to function as a side window of the horticultural facility H, it is preferable to install the insect net 10 with the following points in mind. Specifically, if the four corners of the insect net 10 are not fixed to the support posts at the side window of the horticultural facility H, insects will enter through the gaps between the insect net 10 and the support posts. For this reason, it is preferable to securely fix the four corners of the insect net 10 to the support posts.

[0039] As explained above, in the insect net 10 according to this embodiment, a portion of the multiple second threads 12 is a high-tensile wire 12m. As a result, even if the insect net 10 is vibrated, the vibration is transmitted to the entire insect net 10 by the inflexible high-tensile wire 12m. Therefore, it is possible to suppress the absorption of the vibration by the insect net 10. Thus, even if the insect net 10 is made large, the entire insect net 10 can be efficiently vibrated with a small number of vibrators. For this reason, even when the insect net 10 according to this embodiment is applied to a large horticultural facility H, the vibration can be efficiently transmitted to the entire insect net 10. Thus, the insect net 10 can prevent the entry of pests. In addition, for example, if the mesh size of the insect net 10 is made larger, ventilation can be ensured, leading to an improvement in the working environment.

[0040] Furthermore, the high-tensile wire 12m has a circular cross-section. This allows, for example, the cross-sectional area of ​​the high-tensile wire 12m to be the same as that of the other second threads 12, so that the insect-proof net 10 can be manufactured without changing the design of the existing loom. In addition, when the insect-proof net 10 is rolled up for storage, the high-tensile wire 12m can prevent the insect-proof net 10 from becoming difficult to roll up. Thus, the storage of the insect-proof net 10 can be ensured.

[0041] Furthermore, the high-tensile wire 12m has a rectangular cross-section. This allows, for example, the high-tensile wire 12m to be used such that the length of the shorter side of its cross-section is the same as the diameter of the second thread 12 other than the high-tensile wire 12m, and to be arranged so that the longer side of its cross-section is parallel to the first direction D1, thereby ensuring that the storage capacity of the insect-proof net 10 is not impaired even if the cross-section of the high-tensile wire 12m becomes larger.

[0042] Furthermore, the system includes a tensioning means 20 for applying tension to the insect-proof net 10 and a vibration means 30 for vibrating the insect-proof net 10. This allows the insect-proof net 10, which is under tension from the tensioning means 20, to be vibrated by the vibration means 30. Therefore, the insect-proof net 10 can be vibrated efficiently. In addition, it can flexibly respond to expansion and contraction of the high-tension wire 12m due to temperature changes associated with seasonal fluctuations, and maintain a state in which tension is always applied to the insect-proof net 10.

[0043] Furthermore, the tensioning means 20 is a spring. This allows tension to be continuously applied to the insect net 10 without using electricity or other means. In addition, even if the dimensions between the support posts P on which the insect net system 100 is installed change due to aging deterioration of the facility (for example, the horticultural facility H) where the insect net system 100 is installed, the tension can be maintained.

[0044] Furthermore, tension is applied to the high-tension wire 12m by the tensioning means 20, and the high-tension wire 12m is vibrated by the vibration means 30. This allows the insect-proof net 10 to be vibrated while preventing it from sagging. Therefore, the insect-proof net 10 can be vibrated efficiently. Thus, the intrusion of pests can be effectively suppressed.

[0045] Furthermore, multiple second threads 12, some of which contain high-tensile wires 12m, are woven together with multiple first threads 11. As a result, the insect-proof net 10 according to this embodiment can be manufactured using an existing loom. Therefore, it does not require any changes to the loom design, and manufacturing costs can be reduced.

[0046] It should be noted that the technical scope of the present invention is not limited to the embodiments described above, and various modifications can be made without departing from the spirit of the invention. For example, the high-tensile wire 12m may be fixed to a pre-made insect net 10 made only of resin thread using adhesive, fasteners, blind stitching, etc. The high-tensile wire 12m may be fixed to the insect net 10 continuously along its entire length, partially along its entire length, or partially along its entire length with a different material. The high-tensile wire 12m may be provided by removing a portion of the second thread 12 from a pre-existing insect-proof net 10 made only of resin threads and replacing it with the high-tensile wire 12m.

[0047] The insect net 10 may be positioned such that the first direction D1 is aligned horizontally. In this embodiment, tensioning means 20 and vibration means 30 are used, but vibration means 30 may also be provided at both ends of the insect-proof net 10 in the second direction D2. In this way, the insect-proof net 10 may be vibrated by vibrating the two vibration means 30 in opposite phases. The cross-sectional shapes of the multiple high-tensile wires 12m arranged in the first direction D1 do not need to be uniform. For example, some of the high-tensile wires 12m may have a circular cross-section, while the others may have a rectangular cross-section. Alternatively, the same vibration means 30 as the tension means 20 (spring) and the insect-proof net 10 may be inserted between them to provide vibration at both ends. Furthermore, although it has been explained that the vibration means 30 vibrates the high-tension wire 12m in the plane along the direction in which the high-tension wire 12m extends, it may also vibrate it in a direction perpendicular to the planar space formed by the insect-proof net 10.

[0048] Furthermore, without departing from the spirit of the present invention, the components in the above embodiments may be replaced with well-known components as appropriate, and the above-described modifications may be combined as appropriate. [Explanation of Symbols]

[0049] 10 Insect net 11 First thread 12 Second thread 12m high tension line 20 Tension means 30 Vibration means 100 Insect Net System D1 1st direction D2 2nd direction

Claims

1. A first thread extending along a first direction and arranged in a plurality along a second direction perpendicular to the first direction, A second thread extending along the second direction and arranged in multiples along the first direction, An insect-proof net equipped with, Some of the aforementioned multiple second threads are high-tension wires. Insect net and, A tensioning means for applying tension to the insect-proof net, A vibration means for vibrating the insect-proof net, An insect-proof netting system equipped with this feature.

2. The aforementioned high-tension wire has a circular cross-section. The insect-proof netting system according to claim 1.

3. The aforementioned high-tensile wire has a rectangular cross-section. The insect-proof netting system according to claim 1.

4. The tensioning means is a spring. The insect-proof netting system according to claim 1.

5. A method for preventing the entry of pests using the insect-proof net system described in claim 1, The tension means applies tension to the high-tension wire, The high-tension wire is vibrated by the vibration means. Methods to prevent pest infestation.

Images