JP2547706Y2 - Insect screen - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application field] The present invention relates to an improvement of insect screen doors to be attached to windows, entrances and the like of buildings.

[Prior Art] Conventionally, as shown in FIG. 4, vertical frames 41, 41 and horizontal frames 42, 42 are used.
Insect-proof screens in which an insect-proof net 43 is fixedly stretched on a rectangular screen-frame 40 made of are known. In such insect screen doors, it is desirable to stretch the net as tightly as possible so that the net 43 does not sag. Recently, however, it is possible to improve the appearance of the screen door, eliminate the feeling of blockage by the screen frame 40, and provide the screen door as inexpensively as possible. For this purpose, a thin frame is often used for the screen door frame 40.
When the frame 43 is tightly stretched, there is a problem that the frame, especially the vertical frame 41 on the long side, tends to curve inward, as shown by the chain line in FIG.

For this reason, as shown in FIG. 5, a reinforcing bar 44 is also erected at an intermediate position between the long vertical stiles 41, 41,
Even if the overall bending of the vertical frames 41, 41 can be prevented, it is not possible to prevent the vertical frames 41, 41 from partially bending on both sides of the reinforcing bar 44 as shown by a chain line in the figure, It has not yet reached a sufficient effect.

[Problem to be solved by the invention] An object of the invention is to provide an insect screen which can stretch a net in a tensioned state without curving a frame.

Means for Solving the Problems In order to solve the above problems, the present invention relates to an insect screen door in which an insect screen is fixedly and tensioned to a rectangular screen frame composed of a vertical frame and a horizontal frame. The frame of at least the long side of the frame is divided into a groove-shaped outer frame member provided with an opening on the inner peripheral side surface of the screen door frame and an inner frame member disposed in the outer frame member, The inner frame member is provided with a slit on the inner peripheral side surface of the screen door frame, and the locking member at the end of the net is engaged with the inner frame member through the slit so as to prevent the inner frame member from being pulled out. An elastic member interposed between the inner frame member to absorb and alleviate the tension of the insect repellent net acting on the outer frame member via the inner frame member to prevent the outer frame member from bending.

[Operation] The inner frame member is urged outward by an elastic member interposed between the inner frame member and the outer frame member, and the net is held in a tensioned state. At this time, the tension of the net acting on the inner frame member and the outer frame member is absorbed and relaxed by the elastic deformation of the elastic member, and the bending of these members is prevented.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

In FIG. 1, an insect screen door 1 is provided on a rectangular screen door frame 2 composed of vertical frames 3, 3 and horizontal frames 4, 4 made of metal or synthetic resin.
It is constituted by extending the insect-proof net 5 in a fixed manner.

As shown in FIG. 2, the longitudinal frames 3, 3 on the long side of the screen door frame 2 are a groove-shaped outer frame member 10 having an opening 11 on the inner peripheral side surface of the screen door frame 2, and the outer frame. An inner frame member 20 disposed inside the member 10. The inner frame member 20 has a slit 21 on the inner peripheral side surface of the screen door frame 2 and has an outer frame member 10.
Projecting parts 22,22 projecting from both sides in the width direction of the frame inside
The locking member 6 attached to the end of the net 5 is inserted through the slit 21 in a locked state and engaged with the inside of the inner frame member 20, and the overhanging portion of the inner frame member 20 is provided. An elastic member 7 is interposed between the inner frame 22 and the inward wall 12 of the outer frame member 10, and the inner frame member 20 is urged outward by the elastic member 7 in the width direction of the net 5. Net 5
Are held in tension.

The elastic member 7 can be made of any elastic material such as natural rubber, synthetic rubber, sponge-like synthetic resin foam, and spring, and may be provided over the entire length of the vertical frame 3. However, it can also be partially arranged.

As shown in FIG. 3, the locking member 6 has a large number of engaging small projections 31 attached at regular intervals to the end of a tape 30 made of cloth, synthetic resin, or the like. 31
Is formed by bending a thin wire having a circular cross section made of a synthetic resin into a U-shape, and arranging the thin wires on both sides of the end portion of the tape 30 and sewing and fixing them with a thread 32. 31a
Is an engaging portion that engages with the inner edge of the slit 21.
These small protrusions 31 located on both sides of the tape 30 can be formed as a continuous one by bending a single thin line sequentially so as to straddle the end of the tape 30 as shown in FIG. Small projections 31
They will be located 80 degrees apart. The locking member 6
Can be constituted by one of a pair of interlocking members in a commercially available synthetic resin fastener.

It is needless to say that the locking member 6 is not necessarily limited to the one provided with the small protrusions as shown in the figure, and may have a structure other than this.

On the other hand, for the short side frames 4,4 of the screen door frame 2,
Since the horizontal frames 4, 4 are less likely to bend due to the tension of the net 5, the net 5 can be attached by an appropriate method.
Of course, the net 5 may be stretched by the same configuration as that of the vertical frames 3,3.

In the insect screen door having the above configuration, the inner frame member 20 is provided by the elastic member 7 interposed between the inner frame member 20 and the outer frame member 10.
Are biased outward, and the net 5 is kept in tension. At this time, since the tension of the net 5 acting on the inner frame member 20 and the outer frame member 10 is absorbed and reduced by the elastic deformation of the elastic member 7, these members 10, 20 do not bend.

A reinforcing bar 8 can be provided in the screen door frame 2 at an intermediate position between the long side vertical frames 3, 3 as shown by a chain line in FIG.

Also, if the horizontal frame in the screen frame is longer than the vertical frame,
It goes without saying that the long side frame is configured like the vertical frame in the above embodiment.

[Effects of the Invention] According to the present invention, as described above, in an insect screen net in which an insect net is fixedly and tensioned to a screen frame, at least a long side frame of the screen frame is formed by an outer frame member and an inner frame member. In addition to locking the end of the insect net to the inner frame member,
An outer frame member supports the inner frame member, and an elastic member is interposed between the inner frame member and the outer frame member. The elastic member acts on the outer frame member via the inner frame member. Since the tension of the insect repelling net is absorbed and relaxed, it is possible to prevent a large force due to the tension of the net from acting on the outer frame member, thereby reliably preventing the outer frame member from being bent. The net can be adjusted to an appropriate size to prevent the net from being stretched with an excessive degree of tension. As a result, it is possible to prevent the curving of the screen door frame and the strength reduction due to the extension of the insect-proof net. Can be realized at the same time, and the durability of the insect screen can be significantly increased.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the insect screen door of the present invention, FIG. 2 is an enlarged sectional view of the intermediate portion taken along the line AA, FIG. 3 is a partially enlarged view of a locking member, and FIG. FIG. 5 and FIG. 5 are front views of a conventional insect screen. DESCRIPTION OF SYMBOLS 1 ... insect-proof screen door, 2 ... screen door frame, 3 ... vertical frame, 4 ... horizontal frame, 5 ... net, 6 ... locking member, 7 ... elastic member,
10 ... outer frame member, 11 ... opening, 20 ... inner frame member, 21 ...
slit.

Claims (1)

(57) [Scope of request for utility model registration] In an insect screen, an insect net is fixedly and tensioned to a rectangular screen frame composed of a vertical frame and a horizontal frame, wherein at least a long side frame of the screen frame is connected to an inner peripheral side of the screen frame. A frame-shaped outer frame member having an opening on the side surface thereof and an inner frame member disposed in the outer frame member, wherein the inner frame member has a slit on the inner peripheral side surface of the screen door frame. Is provided, and the locking member at the end of the net is engaged with the inner frame member through the slit in a locked state. Between the inner frame member and the outer frame member, the outer frame member is connected to the outer frame member via the inner frame member. An insect screen which is characterized by interposing an elastic member for absorbing and relaxing the tension of the insect insect net which acts to prevent the outer frame member from bending.