JP3579342B2 - Insect screen net for screen door - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to an insect net for a door which is made to be capable of being extended and contracted in an accordion style by applying a large number of pleats.
[0002]
[Prior art]
By applying a large number of pleats, the insect repellent net that can be expanded and contracted in an accordion style is woven with vertical yarns and horizontal yarns using yarns made of polyester fiber, polypropylene fiber, etc., or What has been formed by knitting has been generally and more widely used than before. In general, the vertical and horizontal yarns constituting the net are manufactured as a uniform net by using yarns of the same thickness and the same number of filaments.
[0003]
By the way, the flat part between pleats in an accordion-type telescopic insect-repellent net is required to have hardness to withstand a certain amount of wind pressure, while the pleat part is necessary for a smooth telescopic operation when opening and closing the net. Flexible bending flexibility is required.
However, as in the prior art, the insect-preventing net in which the vertical and horizontal yarns are uniformly formed with the same thickness and the same number of filaments has a thickness of the filaments in consideration of withstanding some wind pressure. When the net is formed relatively hard by increasing the thickness or increasing the number of filaments, the opening / closing operation of the net may become heavy.On the other hand, it is considered that the opening / closing operation of the net can be performed smoothly. Then, when the net is formed relatively soft, problems such as swelling of the net due to the influence of wind pressure are pointed out.
[0004]
[Problems to be solved by the invention]
A technical object of the present invention is to provide an insect repellent net having an appropriate hardness that can withstand wind pressure and capable of bending operation for smooth expansion and contraction at the time of opening and closing operation, at a lower cost. .
[0005]
[Means for Solving the Problems]
The present invention for solving the above-mentioned problem is an insect net for a screen door which is alternately folded in the opposite direction and is provided with a large number of pleats, thereby making it possible to expand and contract in an accordion style, and the longitudinal direction along the pleats in the net. The number of filaments constituting the yarns of the above is larger than the number of filaments constituting the horizontal yarns perpendicular to the pleats, and the longitudinal yarns and the lateral yarns constituting the net are It is characterized by being formed by Russell lace weave .
[0006]
In insect net for the screen door, the ratio of the number of filaments constituting the longitudinal yarns and transverse yarns constituting the net, 3: 1 to 4: It is preferred that the third range .
[0007]
The insect net for insect screens having the above configuration, the number of filaments constituting the vertical thread along the pleat in the net is larger than the number of filaments constituting the horizontal thread orthogonal to the pleat. Therefore, it is possible to impart appropriate hardness to withstand the wind pressure to the net, and furthermore, the horizontal yarn that is responsible for the bending operation of the net is substantially softer than the vertical yarn. Therefore, a bending operation for smooth expansion and contraction at the time of opening and closing the net can be performed.
Furthermore, since the insect-controlling net has only to increase the number of filaments constituting the vertical yarns compared to the filaments constituting the horizontal yarns, there is no need to apply special processing to the net itself, so that it is used for screen doors. Insect repellent nets can be provided at lower cost.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of the present invention will be described in detail. FIGS. 1 to 3 show an example of a screen insect insect net according to the present invention.
The insect screen net 4 for a screen door is applied to an insect screen screen that opens and closes a net that expands and contracts in an accordion style by applying a large number of pleats 6, and a longitudinal thread 8 a and a horizontal direction that constitute the net are used. Is formed by Russell lace weave. Russell lace weave is a process in which dozens of fibers made of a synthetic resin such as polyester are combined into several threads to form a braid and form a single thread. At the intersection of 8a and 8b, as shown in detail in FIG. 2, since the longitudinal thread 8a and the lateral thread 8b intersect in a complicated manner, a net having a lattice structure with strong connection is formed. Therefore, the stitches are hardly spread or cut, and there is almost no transmission, and a stitch can be formed with a stable and accurate net, which is suitable for screen doors.
[0009]
In general, in the insect net 4 that expands and contracts in an accordion manner by applying a large number of pleats 6, the longitudinal thread 8a mainly secures the strength of the flat portion between the adjacent pleats 6, 6 while the transverse direction The thread 8b mainly has flexibility in bending operation of the pleats 6 portion.
In view of this point, in the insect-controlling net 4, as shown in FIG. 2, the number of filaments constituting the longitudinal thread 8 a along the pleats 6 in the net 4 is reduced in the horizontal direction perpendicular to the pleats 6. Is larger than the number of filaments constituting the yarn 8b.
Specifically, the ratio of the number of filaments constituting the yarns 8a and 8b is preferably in the range of 3: 1 to 4: 3 in order to secure the strength of the net 4 and the flexibility of the bending operation. However, in the present embodiment, as shown in FIG. 2 , the net 4 is constituted by five filaments constituting the vertical thread 8a and three filaments constituting the horizontal thread 8b. are doing.
[0010]
The insect insect net 4 for a screen door having the above configuration is configured such that the number of filaments constituting the longitudinal thread 8a along the pleat 6 in the net 4 is reduced by the number of filaments constituting the lateral thread 8b perpendicular to the pleat 6. Therefore, the net 4 can be given an appropriate hardness that can withstand the wind pressure, and the horizontal thread 8b that is responsible for the bending operation of the net 4 is substantially formed. Since the net 4 is softer than the longitudinal thread 8a, a bending operation for smooth expansion and contraction at the time of opening and closing the net 4 becomes possible.
Furthermore, the insect-proof net 4 does not need to be subjected to special processing to the net 4 itself, only by increasing the number of filaments constituting the longitudinal thread 8a compared to the filament constituting the lateral thread 8b. Therefore, the insect net 4 for screen doors can be provided at lower cost.
[0011]
In the above-described embodiment, the number of filaments constituting the vertical thread 8a and the horizontal thread 8b in the insect-controlling net 4 is 5 and 3, respectively. However, if the ratio of the number of filaments constituting the yarns 8a and 8b is in the range of 3: 1 to 4: 3, the filaments can be constituted by an appropriate number.
That is, if the ratio of the number of filaments constituting the yarns 8a and 8b is within the above range, the inventor has determined that the net 4 has an appropriate longitudinal hardness that can withstand wind pressure, and the opening and closing of the net 4 It has been experimentally confirmed that moderate flexibility can be provided to enable a bending operation for smooth expansion and contraction during operation.
[0012]
As the threads 8a and 8b constituting the net 4, not only polyester but also any other material suitable for use as an insect repellent net can be used.
[0013]
【The invention's effect】
According to the insect screen net for screen doors of the present invention described in detail above, the number of filaments constituting the vertical thread along the pleats in the net, the filament constituting the horizontal thread orthogonal to the pleats Since the number of the nets is greater than the number of the nets, it is possible to impart appropriate hardness to withstand the wind pressure to the net, and furthermore, the horizontal yarns that are responsible for the bending operation of the net are substantially in the vertical direction. Since the yarn is softer than the thread, it is possible to perform a bending operation for smooth expansion and contraction at the time of opening and closing the net.
Furthermore, since the insect-controlling net has only a larger number of filaments constituting the longitudinal yarns than the filaments constituting the horizontal yarns, it is not necessary to apply special processing to the net itself, and thus the insect-proofing insect net for insect screens. The net can be provided at a lower cost.
[Brief description of the drawings]
FIG. 1 is a perspective view showing the overall configuration of a screen insect insect net of the present invention.
FIG. 2 is an enlarged front view of the main part.
[Explanation of symbols]
4 insect repellent net 6 pleated 8a, 8b yarn

Claims (2)

It is an insect net for insect screens that can be stretched in an accordion style by alternately folding it in the opposite direction and applying many pleats.
The number of filaments constituting the longitudinal yarns along the pleats in the net is larger than the number of filaments constituting the horizontal yarns orthogonal to the pleats ,
Formed by Russell lace weaving the vertical yarn and the horizontal yarn constituting the net,
Insect repellent nets for screen doors. The ratio of the number of filaments constituting the longitudinal yarns and the number of filaments constituting the horizontal yarns constituting the screen insect repellent net was in the range of 3: 1 to 4: 3.
The insect net for a screen door according to claim 1, characterized in that:

Images