JP3052433U - High density insect net - Google Patents

Abstract

(57) [Summary] [Problem] To achieve both insect repellent function such as small insects and ventilation function. SOLUTION: This insect-preventing net for openings has a high mesh density per unit area and a small mesh in order to prevent invasion of small pests such as mosquitoes, and a plurality of zigzag-shaped folds parallel to one direction. It has a stitch, and in this fold, the net yarn is locally reduced in diameter.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The invention of this application relates to a high density insect repellent net. More specifically, the invention of this application relates to a new insect repellent net that has a sufficient insect repellent function against small pests such as mosquitoes and has good ventilation at an opening where the insect repellent net is installed. is there.

[0002]

[Prior art and its problems]

 Conventionally, the mesh size of insect repellent nets has a mesh size of about 18-16 or 18-18, and flies and other relatively large insects invade through the openings. The main purpose was to prevent For this reason, the conventional insect repellent net cannot exert the insect repellent function against invasion of small pests such as mosquitoes.

[0003] Under such circumstances, it has been conventionally considered to reduce the mesh size, for example, to 20-20 mesh or 24-24 mesh. Means for reducing the size of the mesh in this manner include increasing the diameter of the mesh yarn forming the insect repellent net or increasing the number of mesh yarns to increase the density of the mesh yarn per unit area. Is being considered.

[0004] However, such conventional measures for preventing the invasion of small pests also have serious practical drawbacks. This is because insect screens are installed in windows, entrances, and other openings and openings for ventilation, but in the case of insect screens with a high density of mesh, the mesh is small. As a result, the air permeability was greatly impaired. In particular, since insect repellent functions are required when ventilation is required in hot summer months, the problem of impaired ventilation is actually a problem that insect repellent nets are intended for small pests such as mosquitoes. Created the common sense that it was not realistic.

[0005] Therefore, the inventor of the present application solves the above-mentioned drawbacks of the conventional insect repellent net, and provides an insect repellent function of preventing the invasion of small pests, as well as ensuring and increasing air permeability. The task is to provide a network.

[0006]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the present application discloses, as a first device, an insect repellent net for an opening in which a mesh is made smaller by increasing the density of net yarn per unit area to prevent invasion of small pests such as mosquitoes. A high-density insect-control net having a plurality of zigzag folds parallel to one direction, wherein a net thread is locally thinned at the folds.

[0007] In addition, the present invention relates to the first invention, as a second invention, a high-density insect-control net capable of being drawn out and extended and folded and stored in an opening as a third invention. As a fourth invention, a high-density insect net having a mesh of 20 mesh or 24 mesh is used as a fifth invention. As a device, a high-density insect repellent net made of a thermoplastic synthetic fiber is used as a device, and as a sixth device, a woven or braided planar network is compressed at the fold line. The present invention also provides a high-density insect repellent net in which folds are formed on both sides thereof by stretching in opposite directions so that the net yarn has a locally small diameter.

[0008]

[Embodiment of the invention]

 The invention of this application has the features as described above, and embodiments thereof will be described below. First of all, what is important in the present invention is to reduce the mesh size by increasing the density of net yarn per unit area in order to prevent the invasion of small insects such as mosquitoes. For the purpose of preventing invasion of the small insects, the mesh size is 18-16, which is the mesh size of conventional insect repellent nets, or a mesh smaller than 18-18.

For example, in the insect repellent net of the present invention, the size of the mesh is reduced to about 20 to 20 mesh or 24 to 24 mesh. Typically, reducing to such a small mesh size will result in a significant loss of air permeability, as described above. Therefore, in the insect repellent net of the present invention, as shown in FIG. 1, for example, the insect repellent net (1) has a plurality of zigzag folds (2) parallel to one direction. .

[0010] For this reason, if the insect repelling net (1) is installed in an opening having a size of, for example, height (H) and width (W), the entire plane area of the net of the insect repelling net (1) ( S ₀ ) is, as shown in FIG. 2, a sum of small planes (S ₁ , S ₂ , S ₃ ...) Divided for each fold (2), and S ₀ = S ₁ + S ₂ + S ₃ +..., The total plane area (S ₀ ) is S ₀ > H × W, which is much larger than the opening plane area (H × W).

As a result, the ventilation area, which is the total mesh area of the insect repellent net (1), is much larger than that of a flat insect repellent net having no zigzag folds (2). And, furthermore, the ventilation area can be larger than in the case of the conventional larger mesh flat insect repellent net. Actually, in the following cases: A: The insect repellent net having zigzag folds of the present invention has a mesh size of 24 mesh.

The folding angle at the fold is 90 degrees. B: This is a normal flat insect repellent net having a mesh size of 18 mesh. C: A flat insect repellent net having a mesh size of 24 mesh similar to A in the present invention. , The sizes of the ventilation areas (S _A , S _B , S _C ) of all the meshes are as follows.

[0013] From S _A > S _B > S _C or more, it can be clearly understood how the insect repellent net according to the invention of the present application is excellent in air permeability. In addition, the mesh size is small, and the passage of small insects such as mosquitoes can be eliminated. That is, as in the invention of this application, by making the insect repelling net (1) a zigzag shape with a fold (2), the apparent area (H × W) as the size at the opening is: Even though it is the same as a flat insect repellent net, the air passing through the insect repellent net (1), that is, the area of ventilation (S _A ) is significantly increased.

The size of the small plane (S ₁ , S ₂ , S ₃ ...) With respect to the opening and the number of folds are determined by how much the ventilation area (S _A ) should be. Further, although it is related to the size of the mesh, compared with the ventilation area (S _C ) in the case of a flat insect repellent net, S _A = (1.2 to 2.2) S _C , which is more preferable. Is S _A = (1.4-1.8) S _C. If the magnification is too large, each of the small planes (S ₁ , S ₂ , S ₃ ...) Becomes too large, causing a problem in installation. On the other hand, if the magnification is too small, the improvement of the ventilation effect cannot be expected much.

However, it is not easy to have the fold (2) of the insect repellent net (1) as in the present invention. This is because, as a high-density net, the number of yarns or the diameter of the yarn is increased and the mesh is reduced, so that it is not easy to form the fold (2) and secure its shape retention. . The processing itself becomes difficult due to the increase in the resistance of the net yarn, and it is unavoidable that the fold (2) disappears and returns to a flat net due to the resistance.

Therefore, the insect net (1) of the present invention has a fold (2) as shown in FIGS. 1 and 2, and as shown in FIG. 3, at the fold (2), The mesh yarn (3) has a locally small diameter (4). The local small diameter (4) not only facilitates processing and formation, but also improves shape retention as the insect net (1) having the fold (2).

In FIG. 3, there is no particular limitation on the steady bending angle (α) at the fold (2), but the durability of the shape of the fold (2) and the visual observation of the fold (2) In general, it is preferable to set the angle to about 60 to 120 °. The local small diameter (4) in this case does not necessarily mean that the mesh yarn (3) is thin as a circular shape as illustrated in FIG. As shown in FIG. 4 (b) or FIG. 4 (c), the case where the shape is thinner in a flat shape is also included. That is, any of the structures shown in FIGS. 4A, 4B, and 4C correspond to the small diameter (4) defined in the present invention.

In terms of workability and fold shape retention, those shown in FIGS. 4B and 4C are more realistic and preferable. Since the mesh size has a mesh size of 20 mesh or 24 mesh so as to have the insect repellent function and the ventilation is improved, for example, the flat small diameter (4) as shown in FIGS. In this case, the shape is D _a = (1/10 to 1/2) D D _b = (D) for the short diameter (D _a ) (D _b ) with respect to the yarn diameter (D). 11/10 to 2/1) D 2.

The existence of the small diameter (4) as described above is made possible by, for example, compression processing. As the mesh yarn (3), a material made of a thermoplastic synthetic fiber is exemplified as a material suitable for this processing. That is, the fold (2) is formed by performing compression processing on the planar net made of woven or braided thermoplastic synthetic fibers.

The process of folding (2) will be described by way of example. For example, the process is shown in FIG. First, a mesh of an insect-proof net is formed by a loom or a knitting machine, and then the mesh is welded and hardened by blowing hot air or the like. As a result, a net having a planar shape as a whole is formed.

Thereafter, the folds are formed in the compression / extension step, and then the folds are set (fixed) by blowing cold air or the like. Then, it will be stored in a folded state. Characteristic of this process is the presence of a compression / extension step. Here, as illustrated in FIG. 6, for example, the press (61) compresses the mesh yarn (3) at a predetermined position of the mesh body, that is, at the fold position, and simultaneously presses both sides of the press (61). For example, they are stretched in opposite directions by a back tension roller (62) and a tension roller (63). As a result, the net yarn (3) is locally reduced in diameter (4) and creased.

As a series of flows of the process of FIG. 5, for example, in the example of FIG. 6, the network is sent in the traveling direction (A). Of course, the processing is not limited to the above example, and may be in various modes. For example, the insect repellent net of the present invention processed as described above can be used as an insect repellent for openings in various places such as houses, offices, condominiums, factories, and greenhouses. The insect repellent net of the present invention having a fold may be attached and fixed to the frame of the opening as appropriate, or may be drawn out to the opening using the fold and can be folded and stored. . The fold may be substantially vertical or horizontal.

Regarding the arrangement at the opening, for example, as shown in the example of FIG. 7 in which the fold (2) is a horizontal insect repellent net, the frame where the end of the crest and the valley of the fold (2) are in contact with each other In the part (7), it is preferable that the end of the groove contact the bottom (71) of the groove so as to prevent insects such as mosquitoes from entering from the end. When the area of the opening where the insect repelling net (1) is disposed is large, a guide wire or the like may be penetrated through the insect repelling net so as to support the whole. The use of various other auxiliary means is considered.

In any case, the present invention can provide an insect repellent function for preventing invasion of small insects, etc., as well as a ventilation effect and an operational effect with a different dimension. Of course, the structure of the details is not limited to the above example, but various modifications are possible in the present invention.

[0025]

[Effect of the invention]

 As explained in detail above, the inventor of this application has improved the ventilation without impairing the ventilation, even though it is a high-density insect net that prevents the invasion of small pests such as mosquitoes. It can also be done.

[Brief description of the drawings]

FIG. 1 is an external perspective view of the insect repellent net of the present invention.

FIG. 2 is a plan view corresponding to FIG.

FIG. 3 is a perspective view and an enlarged plan view illustrating a fold portion.

FIGS. 4 (a), (b), and (c) are diagrams each illustrating a small-diameter shape of a fold;

FIG. 5 is a process chart illustrating a processing process.

FIG. 6 is a schematic view illustrating fold formation.

FIGS. 7A and 7B are a perspective view and a cross-sectional view of a main part illustrating an installation state of the insect repellent net.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 insect repellent net 2 fold 3 net thread 4 small diameter 61 press 62 back tension roller 63 tension roller 7 frame 71 groove bottom

Claims (6)

[Utility model registration claims] 1. An insect repellent net for an opening having a high density of net yarns per unit area and a small mesh to prevent invasion of small pests such as mosquitoes, comprising a plurality of zigzag-like nets parallel to one direction. A high-density insect-control net having a fold, in which the net yarn has a locally small diameter. 2. The high-density insect repellent net according to claim 1, wherein the opening can be drawn out, extended, and folded and stored. 3. The high-density insect repellent net according to claim 1, wherein the fold mesh yarn is locally reduced in diameter by compression processing. 4. The high-density insect repellent net according to claim 1, wherein the mesh has a size of 20 mesh or 24 mesh. 5. The net yarn is a thermoplastic synthetic fiber.
Or a high-density insect repellent net according to any one of (4) to (4). 6. A woven or braided planar mesh body,
The high-density insect-control net according to any one of claims 1 to 5, wherein the fold is formed by compressing the fold and simultaneously stretching the mesh yarns in opposite directions on both sides to locally reduce the diameter of the net yarn.