JPH0161158B2 - - 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 doors should be opened to improve ventilation during the hot summer months.

However, in the summer, pests such as mosquitoes and flies fly in, so screens are installed to prevent them from entering.

However, window screens are not only annoying when the window is closed, but there are often times when you want to move the screen from side to side (change the position of the window opening), but fitting the screen to the rail is extremely easy and easy to move. Screen doors sometimes come off, and if the screens on windows on the second floor or higher in high-rise buildings such as apartment complexes and condominiums come off and fall, it can cause an accident that could potentially kill people.For this reason, screen doors on high-rise buildings, including glass doors, cannot be removed to the outside. There are even special regulations in place (it can only be removed indoors). In addition, in order to arrange a screen door on the back door, the screen door must also be a door type, but opening, closing, and locking the screen door or door is extremely troublesome.

This invention solves the above-mentioned problems of the conventional screen door.The purpose of this invention is to use a spring roller to roll up the insect screen on the screen door so that there is no gap for mosquitoes and flies to enter when the screen door is pulled down. .

The feature of this invention is that the insect screen in the screen door is rolled up using a winding and unwinding roller, and the left and right edges of the insect screen have protrusions consisting of a large number of engagement teeth or rings on one side edge. A tape half of the slide fastener having a row is attached, a grooved rail is provided on the inner side of the left and right vertical frames of the screen door peripheral frame, and the tape half of the slide fastener is slidably in the groove of the rail. The base end of the protrusion is slidably engaged with the inner surface of the mouth edge of the groove.

Another feature of the present invention is that, in the above-mentioned insect control net, a sheet having a thickness equal to the height of the protrusions of the slide fastener tape half is wound around a roller separately provided on a winding and unwinding roller; This sheet is attached to an insect screen and rolled up together with the insect screen, and when the insect screen is rolled up using a slide fastener roller and pulled down, a screen door is created with no gaps through which mosquitoes and flies can enter.

The feature of this invention is that the insect screen in the screen door is rolled up using a winding and unwinding roller, and the left and right edges of the insect screen have protrusions consisting of a large number of engagement teeth or rings on one side edge. A tape half of the slide fastener having a row is attached, a grooved rail is provided on the inner side of the left and right vertical frames of the screen door peripheral frame, and the tape half of the slide fastener is slidably in the groove of the rail. The base end of the protrusion is slidably engaged with the inner surface of the mouth edge of the groove.

Another feature of the present invention is that, in the above-mentioned insect control net, a sheet having a thickness equal to the height of the protrusions of the slide fastener tape half is wound around a roller separately provided on a winding and unwinding roller; This sheet is attached to an insect repellent net and wrapped together.

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

1 to 5, 1 is a peripheral frame for a screen door, 2 is a roller for winding and rewinding attached to the upper stile of the peripheral frame 1, and this roller 2 is
A coiled spring is loaded around the axis to provide resilience in the winding direction.

One end of an insect repellent net 3 is wrapped around and fixed to the roller 2, and a crosspiece 4 for pulling and pulling up is fixed to the lower end of the insect repellent net 3. Reference numeral 5 designates a lock knob which can be raised and lowered freely and which is attached to the crosspiece 4, and reference numeral 6 designates a hole through which a hook piece 7 integrated with the knob 5 provided on the lower stile of the peripheral frame body is engaged.

On the left and right edges of the insect screen 3, as enlarged in FIG. 2, there are tape halves 9 for slide fasteners, each of which has 10 rows of protrusions consisting of interlocking teeth 8 on one side edge of the tape base. is sewn along its entire length.

Further, as shown in FIG. 5, a grooved rail 12 having a groove 11 extending from the lower end to the roller 2 is provided on the inner surface of the left and right vertical frames of the peripheral frame 1. The slide fastener tape half 9 is slidably inserted into the groove 1.
The proximal end portion of the protrusion 10 is slidably engaged with the inner surface of the mouth edge of the protrusion 1 .

13 is a cover that covers two parts of the roller.

The protrusions of the slide fastener tape half are not necessarily composed of the fastening teeth 8 as shown in FIG. 2, but as shown in FIG. The ring parts 8a are sewn and fixed with a sewing machine so that they are spaced at equal intervals.
The protrusion 10a can also be formed by a.

The screen door having the above configuration is opened and closed by moving the crosspiece 4 up and down and winding up or unwinding the insect screen 3 onto the roller 2. That is, by opening the glass window, the insect net 3 can be pulled out from the roller 2 and extended only when insect control is required, and when the glass window is closed, the insect net 3 can be rolled up to provide good lighting and external visibility. Screens can be left in place on windows throughout the year.

In this case, when insect control is required and the insect screen 3 is pulled out and unfolded, the tape halves 9 at both ends of the insect screen 3 enter the rail grooves 11 in the vertical frame portion of the peripheral frame 1 and are inserted into the tape halves 9. Attached protrusion 1
Since the groove 11 is engaged with the inner surface of the mouth edge of the groove 11, it will not slip out inadvertently, and therefore mosquitoes and flies can be completely thrown out.

In addition, when the slide fastener tape halves 9 are attached to the left and right edges of the insect screen 3 in this way, when the insect screen 3 is wound around the roller 2, the presence of the protrusions 10 prevents the insect screen from being rolled up. Since the diameters on both sides of the roller 2 are larger than the center part, and the center part becomes loose, the diameters of both end parts a of the roller 2 are made smaller as shown in Fig. 3, and the winding is performed using this small diameter part a. Diameter differences can be absorbed. Alternatively, this problem can also be solved by configuring as shown in FIGS. 7 and 8.

That is, as shown in FIGS. 7 and 8, there are two upper and lower winding and unwinding rollers 2, 2 on the upper stile of the screen door peripheral frame 1.
one end of the insect screen 3 is wound around one roller 2, and the thickness of the protrusion 10 of the slide fastener tape half body 9 attached to both side edges of the insect screen 3 is attached to the other roller 2a. One end of a sheet 14 made of, for example, strong cardboard or other material having a thickness equal to .

In such a case, even if slide fastener tape halves 9 are attached to both sides of the insect screen 3, the insect screen 3 wound around the roller 2 will not have loose or tensioned parts, and the insect screen 3 will not be caught. This has the effect that there is no risk of bearing occurring during the rewinding operation.

In addition, by disposing a guide roller 15 at the upper end of the grooved rail 12, and if necessary, a receiving roller or a receiving member opposite to this guide roller 15, the slide fastener tape halves 9 on the side edges of the insect screen 3 can be sequentially moved without support. Although it can be inserted into the groove 11 of the rail 12,
Smooth insertion can also be achieved by replacing the required range of the upper end of the rail 12 with a rail made of a soft or semi-hard elastic material.

According to the present invention having the above configuration, tape halves of the slide fastener equipped with a large number of engaging protrusions on one side edge are attached to both side edges of the insect screen, and the tape halves can be freely slid into the grooves of the rail. At the same time as inserting the
Since the proximal end of the protrusion is slidably engaged with the inner surface of the mouth edge of the groove, the insect screen can be opened and closed very smoothly, while at the same time ensuring that the insect screen is not damaged due to sliding contact with the rail. It can be prevented.

That is, the above-mentioned slide fastener originally had a runner for opening/closing operations installed between a pair of tape halves so that the opposing protrusions were sandwiched from both sides, and the runners were opened and closed by sliding the runners along the protrusions. Since the protrusions are to be operated, the base ends of the protrusions that come into sliding contact with the runner are rounded to make them extremely slippery. By doing so, in combination with their point contact, the sliding resistance between the protrusions and the rail can be made very small, making the opening and closing operations of the insect screen easy and smooth.

Moreover, since the tape half itself is always in sliding contact with the runner, its wear resistance is greatly increased.Therefore, by inserting this tape half into the groove of the rail, the insect screen itself can be inserted. There is no damage to the insect screen due to sliding contact with the rail, as would be the case, and its durability can be significantly increased.

Furthermore, if a locking member to be attached to both side edges of the insect screen is specially molded with a large number of protrusions like the tape halves of the slide fastener, it would require a large amount of money to manufacture the mold. For,
Although it is unavoidable that the price of the screen door will be very high, by using slide fasteners as the locking members, which can be mass-produced at low cost, as in the present invention, it is possible to produce a screen door with good quality and operability at a low cost. Obtainable.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the screen door according to the present invention, with the insect screen partially rolled up, FIG. 2 is an enlarged perspective view of the main part of the insect screen, and FIG. FIG. 4 is a sectional view taken along the - line in FIG. 3, FIG. 5 is a sectional view taken along the - line in FIG. 4, and FIG. FIG. 7 is a partially enlarged front view similar to FIG. 3 showing another embodiment of the present invention; FIG.
The figure is a sectional view taken along the - line in FIG. 7. 1... Peripheral frame body, 2, 2a... Roller, 3...
Insect net, 4...piece, 9, 9a...half piece of tape, 1
0, 10a...Protrusion, 11...Groove, 12...Rail, 14...Seat.

Claims (1)

[Scope of Claims] 1. A roller for winding and unwinding is supported on the upper stile of a peripheral frame for a screen door, one end of the insect screen is wound around the roller, and a lower end of the insect screen is used for pulling up and down. The crosspiece is fixed, and tape halves of slide fasteners each having a protrusion row consisting of a large number of interlocking teeth or rings are attached to one side edge to the left and right edges of the insect screen, and a peripheral frame for the screen is attached. A grooved rail is provided on the inner surface of the left and right vertical stile, and the tape half of the slide fastener is slidably inserted into the groove of the rail, and the proximal end of the projection is slidably inserted into the inner surface of the mouth edge of the groove. A building screen door characterized by being engaged with. 2 Rollers for winding up and rewinding in two stages (upper and lower) are supported by bearings on the upper stile of the peripheral frame for the screen, one end of the insect screen is wrapped around one of the rollers, and the lower end of the insect screen is provided with a bar for pulling up and down. The slide fastener tape halves each having a protrusion row consisting of a large number of engagement teeth or rings are attached to the left and right edges of the insect screen. A grooved rail is provided on the inner surface of the left and right vertical stile, and the tape half of the slide fastener is slidably inserted into the groove of the rail, and the proximal end of the protrusion is slidably inserted into the inner surface of the mouth edge of the groove. One end of a sheet having a thickness equal to the height of the projections of the tape half of the slide fastener is wound around the other roller, and the other end of the sheet is wrapped around the roller for winding and unwinding the insect screen. A screen door for a building characterized by being rolled up together with the screen door.