JPH0137552B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of an insect-proof screen door (hereinafter simply referred to as a screen door) provided on a window of a building (including an entrance such as a back door).

Windows and back doorways are opened during the hot summer months to improve ventilation, but screens are fitted to prevent mosquitoes and flies from entering.

However, having a screen on an open area is not only annoying, but it can also come off when moving the screen to open the window.

This invention solves the above problems of conventional screen doors,
Furthermore, it satisfies the need to hang curtains over open areas of windows or to hang curtains in place of screen doors. In a similar manner, curtains are also attached in a roll-up manner, and when the curtain is pulled down, the screen door is designed to have no gaps for mosquitoes or flies to enter.

The details of this invention will be explained below based on embodiments shown in the accompanying drawings.

In the figure, 1 is a peripheral frame for a screen door, and 2a and 2b are rollers for winding and rewinding that are attached in parallel to the upper stile of the peripheral frame 1. These rollers have a coiled spring around their axis. It is loaded and provided with resilience in the winding direction, and is equipped with a well-known mechanism capable of stopping midway through winding and unwinding.

One end of a door screen 3 is wound around the roller 2a, and one end of a curtain 4 is fixed around the roller 2b. Reference numerals 5 and 6 are bars for pulling down the insect screen and the curtain, which are attached to the lower ends of the curtain.

On both the left and right edges of the insect screen 3 and the curtain 4, as enlarged in FIG. It is sewn along its entire length.

Further, on the inner surfaces of the left and right vertical frames of the peripheral frame 1, from the lower end to the rollers 2a, 2b, as shown in an enlarged view in FIG. , a groove 10 that engages the bulging convex portion 9 on both the front and back surfaces by the engagement teeth 7 of 8b.
A rail 11 with rails a and 10b is provided.

12 is a cover that covers the roller section.

The bulging convex part of the slide fastener tape half does not necessarily have to be a series of fastening teeth 8, but it can also be fixed by sewing a spiral filament to the tip edge of the tape half so that each ring part is equally spaced. It is also possible to form a bulging convex portion.

This invention is as described above, and this screen door has two rollers arranged in parallel and supported by bearings on the upper frame of the screen door peripheral frame, one roller holds the insect screen, and the other roller holds one end of the curtain. The slide fastener tape halves are attached to the left and right edges of the insect screen and the curtain over the entire length, and the tapes described above are attached to the inner surfaces of the left and right vertical frames of the surrounding frame. Since it has two parallel grooved rails that engage the convex series (or convex stripes) that bulge out on both the front and back sides of the slide fastener tape half, it is not necessary to prevent insects by opening the glass window. When closing the window, the insect screen can be pulled out from the roller and stretched out, and the curtain can also be pulled out and stretched out.When the glass window is closed, the insect screen or curtain can be rolled up to improve daylight and external visibility. This has the effect of allowing screens to be left in place on windows throughout the year.

Furthermore, when an insect-proof net or curtain is pulled out and unfolded when insect-proofing is required, the tape halves on both sides of the insect-proof net or curtain enter the rail grooves of the vertical frame of the surrounding frame and enter the rail grooves on both sides of the insect-proof net and curtain. Since the part that has entered is the bulging convex part of the slide fastener tape half, it will not come out inadvertently and has the excellent effect of completely shutting out mosquitoes and flies.

When half of the slide fastener tape is attached to the left and right edges of an insect screen or curtain, the diameter of both sides of the insect screen or curtain becomes larger when it is rolled into a roller due to the presence of the bulging convex part. However, by making both end portions a of the roller small in diameter as shown in FIG. 3, this problem can be overcome.

In addition, by using slide fastener tape halves as the engaging members between the rails and both sides of the insect screen or curtain, the following effects can be obtained.

In other words, in a slide fastener, a main body and a runner for opening/closing operation are attached between a pair of tape halves so as to sandwich opposing engagement teeth or rings from both sides, and the runners are slid along the teeth, etc. Since it is opened and closed by
The proximal end of the connecting tooth, etc., which comes into sliding contact with the runner, is rounded to make it extremely slippery. Therefore, in the present invention, it is difficult to slide the proximal end of the protruding portion of the connecting tooth, etc. onto the rail. By bringing them into contact, together with the fact that they are in point contact, the sliding resistance between the bulging convex portion and the rail can be made very small, making it possible to easily and smoothly open and close the insect screen or curtain.

In addition, if you try to specially mold an engaging member to be attached to both sides of an insect screen or curtain that has a large number of bulging protrusions, such as a tape half of a slide fastener, it will be difficult to make a mold. However, as in the present invention, it is inevitable that the price of the screen door will be very high.
By using slide fasteners that can be mass-produced at low cost as a locking member, a screen door with good quality and operability can be provided at low cost.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a perspective view of a screen door with an insect screen and a curtain partially rolled up, FIG. 2 is an enlarged perspective view of the main part of only the insect screen, and FIG. Figure 3 is an enlarged partially cutaway front view of the screen door, Figure 4 is a sectional view taken along the line shown in Figure 3, and Figure 5 is a cross-sectional view of the screen door.
It is an enlarged cross-sectional view taken along the line of FIG. 1... Peripheral frame body, 2a, 2b... Roller, 3...
...Insect screen, 4...Curtain, 8a, 8b...Slide fastener tape half, 9...Bulging convex part, 1
0a, 10b...grooves of the rail 11.

Claims (1)

[Claims] 1 Winding and unwinding roller 2 on the upper stile of the peripheral frame
One end of the insect screen is wrapped around and fixed to one roller, and one end of the curtain is wrapped around and fixed to the other roller, and the left and right edges of the insect screen and curtain are provided with their entire length. A tape half of a slide fastener with a bulging convex part consisting of a large number of engagement teeth or rings is attached over the entire length, and two rows of grooved rails are installed in the front and rear on the opposing inner surfaces of the left and right vertical frames of the peripheral frame body. A screen door for a building, characterized in that the groove of the rail is formed over a range from the top to the upper roller, and the groove of the rail is deep and wide enough to catch and prevent the protruding part of the slide fastener tape half from coming out.