JP2564242B2 - Folding screen - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding screen door which opens and closes a building opening by expanding and contracting a net in an accordion system.

[0002]

2. Description of the Related Art Generally, as an insect screen door in which an insect net can be freely opened and closed, one end of the net is wound around a winding shaft driven by an elastic restoring force caused by twisting of a coil spring.
A roll type is known in which the building opening is closed by pulling out the net along the screen frame and the building opening is opened by winding the net around a winding shaft.

However, since the conventional insect-proof screen door has a structure in which the net is directly wound by the winding shaft, a winding shaft having a length corresponding to the entire width of the net is required. Since the winding diameter when the net is wound on the winding shaft is considerably large, a winding box with a large capacity to accommodate it is required, and the size of the winding box is relatively long. Since the design is made on the basis of the case, there is a drawback that the winding box tends to be unnecessarily large.

Further, in the above-mentioned roll-type insect screen door, since it is necessary to give the net the flexibility so that it can be easily wound up, when the net is stretched over the opening of the building, it tends to fly in the wind. In order to enhance the insect repellent effect, it is necessary that both ends of the net be slidably held by the screen frame when the net is stretched so that no gap is formed between the net and the screen frame. However, it is relatively difficult to make the net slide smoothly with respect to the screen frame, and moreover, it is relatively difficult to hold the side end so as not to easily come out of the screen frame, which complicates the structure. Also, in this case, if you press the net relatively strongly so that it does not come off from the screen frame, if you inadvertently press the net or other objects come into strong contact with the net,
There is a problem that the screen itself is damaged.

Therefore, as a net for insect screen doors, the net can be stored in a space as small as possible when the building is opened to store the net, and the net has a shape-retaining property that does not spread to normal wind. In addition, when the net is pressed relatively strongly, it is desired that the net be deformed to such an extent that it can be easily recovered without damaging the screen itself.

[0006]

The technical problem of the present invention is to obtain an insect screen door which satisfies the above-mentioned demands.
More specifically, by removing the take-up shaft from the insect screen, the net can be stored in a smaller space, and the net retains a shape that does not spread to normal wind, making the net relatively strong. When pressed,
It is an object of the present invention to provide a folding insect-proof screen door in which the net or the like is deformed to such an extent that it can be easily recovered without damaging the screen door itself.

[0007]

In order to solve the above-mentioned problems, the screen door of the present invention has a base end of a ventilated net which can be expanded and contracted in an accordion type by applying a large number of pleats. While being fixed in the storage case that constitutes one side, an operating frame for opening and closing operation is attached to the tip of the net, and a string that is always held in a tension state between the operating frame and the storage case is attached to the net. It is characterized in that the net has a length such that the net is held in a zigzag shape by the pleats in a state where the net is inserted and pulled out from the storage case to close the net stretching opening. It is desirable that the ventilation net be formed in such a length that the pleats have a bending angle of 60 to 90 degrees when the net is pulled out from the storage case and the net stretching opening is closed.

A winding roller having a spring as a driving source is provided in the storage case, and the other end of a string, one end of which is connected to an operating frame, is wound around the winding roller so that the net is always opened. You can boost it. Furthermore, runners are attached to the upper ends of the operation frame attached to the tip of the net and the steady rest attached to the intermediate position of the net, and these runners are rotatably mounted on the rails of the upper frame. As a result, the net can be suspended from the upper frame so as to be openable and closable. In addition, the base end of the accordion-type telescopic net is fixed to the inner bottom of the storage case that stores the net, and a folded storage area for the net is formed between the storage case and the operating frame. However, in this case, the overlapping thickness when the net is folded in the storage case,
Can be slightly larger than the depth of the storage case.

[0009]

Since the insect-proof screen door having the above-mentioned structure uses a ventilating net which is stretchable in an accordion type by applying a large number of pleats, it can be used to wind the net like a roll-type screen door. No winding shaft is required,
It is possible to store only in the storage space of the high-density folded net. In this case, if the net storage area is formed between the storage case and the operating frame, and the overlapping thickness when the net is folded inside the storage case is set to be larger than the depth of the storage case, the net will spring. Since the overlapping thickness when folded by the force is larger than the depth of the storage case, the operating frame does not vigorously collide with the storage case when the net is opened.

Moreover, since the net is an accordion type, it is not necessary to add flexibility for facilitating winding of the net, and the pleat keeps the zigzag shape, and the reinforcing effect of the pleat makes the net strong. As a result, it has a shape-retaining property that does not spread to the normal wind when it is stretched, and a string that is always held in a tension state between the operating frame and the storage case is inserted into the net. With a simple structure, the stretched state of the net can be stably maintained, and the insect repellent effect can be exerted. Further, although the net has a shape-retaining property such that the net does not spread in the normal wind due to the above-mentioned configuration, when the net is pressed relatively strongly, the net is easily deformed and the screen door itself is damaged. No, it can be easily recovered.

[0011]

1 to 3 show the construction of a laterally open type insect screen door according to an embodiment of the present invention, in which 1 is a square screen door frame and 2 is a freely openable / closable door screen frame 1. The attached net is shown. The screen frame 1 is a housing portion 5 of the net 2.
and a pair of rails 7, 7 on the inner wall surface of the member having a substantially U-shaped cross section, and a portion 6a above the rails 7, 7 made of hard synthetic resin. Upper frame 6 whose lower portion 6b is made of soft synthetic resin
A lower frame 8 having a grooved cross section and a frame receiver 9 located on the opposite side of the storage case 5.

Further, the net 2 is made of a large number of pleats in a zigzag shape so that it can be expanded and contracted in an accordion manner and has ventilation, and the base end of the net 2 is fixed in the storage case 5. An operating frame 10 for opening and closing is attached to the tip of the net 2, and runners 12 are attached to the upper end of the operating frame 10 and the upper end of a steady rest 11 fixed in the middle of the net 2, respectively. The runners 12 are rotatably mounted on the rails 7, 7 of the upper frame 6, so that the net 2 is suspended in the upper frame 6 so as to be openable and closable. Furthermore, the upper and lower ends of the net 2 slide in the groove-shaped upper frame 6 and lower frame 8,
It is guided by the upper frame 6 and the lower frame 8.

In the upper and lower parts of the net 2, the strip-shaped bent pieces 2a sandwiched between the pleats are penetrated.
The strings 15, 15 which are always kept in a tension state are inserted between the operation frame 10 and the storage case 5. The strings 15, 15
Have their tips fixed to the operating frame 10,
On the other hand, inside the storage case 5, means for keeping the cords in a tensioned state is provided at a position corresponding to the cords 15 and 15, and the operating frame 10 is always biased in the opening direction. As the tension maintaining means, each string 1 in the storage case is used.
Winding rollers 16 and 16 each having a spring as a drive source are arranged at positions corresponding to 5 and 15, and the base ends of the strings 15 and 15 are wound around these winding rollers 16 and 16, respectively. .

Therefore, the operating frame 10 is always urged in the opening direction (folding direction) by the urging force of the spring through the cords 15 and 15, and the net 2 is moved from the storage case 5 by the operating frame 10. When the drawer is pulled out and the building opening is closed, energy is accumulated in the springs of the winding rollers 16, 16 through the cords 15, 15, and when the net 2 is folded and opened, the cords 15, The net 2 is automatically folded via 15.

Further, in the closed state where the net 2 is pulled out from the storage case 5, the net 2 is provided with a shape-retaining property such that it does not flutter in the wind, and the insect repellent effect is prevented from being lost due to its swelling or deformation. The net 2 has a length required to hold the zigzag shape by pleats in the closed state. In this case, the net 2 is preferably formed to have a length such that the fold angle θ of each pleat is an acute angle, that is, 60 to 90 degrees. By setting the fold angle θ to an acute angle in this way, The reinforcing effect of the pleats can be enhanced to increase the strength of the net 2.

Further, when the net 2 is folded and opened by a spring force, the base end of the net is stored in the storage case 5.
It is fixed to the inner bottom of the net, and a storage area for the net in a folded state is formed between the storage case 5 and the operating frame 10. As shown in FIG. 4, the overlapping thickness T when the net 2 is folded is T.
If the depth is set to be slightly larger than the depth D of the storage case 5, the folded net 2 itself functions as a cushion, and the operating frame 10 can be prevented from vigorously colliding with the storage case 5. In the figure, 21 is a metal fitting provided on the operating frame 10, 22 is an operator thereof, and 23 is a metal fitting provided on the frame receiver 9 for engaging the above-mentioned metal fitting 21.

Since the insect-proof screen door having the above-mentioned structure uses a ventilating net which can be expanded and contracted in an accordion type by applying a large number of pleats, it is used for winding the net like a roll type screen door. No winding shaft is required, and only the storage space for the high-density folded nets needs to be provided in the storage case 5, and the open nets 2 can be stored in the minimum space.

Moreover, since the net is of the accordion type, it is not necessary to impart flexibility to the net for facilitating winding, and the pleat keeps the zigzag shape, and the net is reinforced by the pleat. Strength can be increased. As a result, the net 2 is provided with a shape-retaining property that does not spread to the normal wind when it is stretched, and the net 15 is provided with a string 15 that is always held in a tensioned state between the operating frame 10 and the storage case 5. Since it is inserted, the stretched state of the net can be stably maintained with a simple structure, and the insect repellent effect can be effectively exhibited.

Further, although the net 2 has a shape-retaining property such that it does not swell in a normal wind, the net 2 is easily deformed together with the cord 15 when the net 2 is pressed relatively strongly. Therefore, the screen door itself can be easily recovered without being damaged.

[0020]

As described in detail above, the insect screen door of the present invention can be freely opened and closed by expanding and contracting the net in an accordion type. Therefore, the winding shaft for winding the net from the insect screen door is eliminated, and the net is removed. Can be accommodated in a smaller space. In addition, the length of the net is
Even when closed from the storage case, the pleats are formed so that the pleats have a zigzag shape.
The strength of the net is increased by the reinforcing effect of the pleats, and it is possible to provide the shape-retaining property to the extent that it does not spread in normal wind. Moreover, since the string that is always kept in tension between the operating frame and the storage case is inserted into the net, the net tension can be stably maintained with a simple structure, and the insect repellent effect is effective. Can be demonstrated.

Further, although the net has a shape-retaining property such that it does not flutter in the normal wind as described above, the net is easily deformed together with the cord when the net is pressed relatively strongly. Therefore, the screen door itself is not damaged,
It can be easily recovered. Also, if the overlapping thickness when the net is folded is made larger than the depth of the storage case, when the net is opened by the force of the spring,
It is also possible to prevent the operating frame from vigorously colliding with the storage case.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view showing an embodiment of the insect screen door of the present invention.

FIG. 2 is a sectional view taken along line AA in FIG.

FIG. 3 is a sectional view taken along line BB in FIG.

FIG. 4 is a cross-sectional view of a state in which the net is folded and opened.

[Explanation of symbols]

 1 screen frame, 2 net, 5 storage case, 10 operation frame, 15 cord, 16 winding roller, θ folding angle, T overlapping thickness, D depth of storage section.

Claims (7)

(57) [Claims] 1. A accordion-type telescopic net that can be expanded and contracted by applying a large number of pleats is fixed in a storage case that constitutes one side of a screen door frame, and the net is opened and closed at the tip. The operation frame for the operation frame is attached to the net, a string that is always kept in a tension state is inserted between the operation frame and the storage case, and the net is pulled out from the storage case to close the net tension opening. The foldable screen door, wherein the net has a length for maintaining a zigzag shape by the pleats in the above state. 2. The net according to claim 1, wherein a ventilated net, which is stretchable in an accordion type by applying a large number of pleats, is pulled out from the storage case and the net tension opening is closed. The length of each pleat is 60-90 degrees.
Folding screen door characterized by that. 3. The device according to claim 1, wherein the storage case is provided with means for connecting one end to the operating frame to keep the cord inserted through the net in a tensioned state, and always opening the operating frame. A folding screen door that is urged in the direction. 4. The winding roller according to claim 3, wherein a winding roller driven by a spring is provided in the storage case as means for keeping the string inserted in the net in a tensioned state. A foldable screen door, comprising means for winding the other end of a string, one end of which is connected to an operating frame around a roller, to constantly urge the net in the opening direction. 5. The runner according to claim 1, wherein the operation frame attached to the tip of the accordion-type telescopic net and the precession plate attached to the intermediate position of the net are respectively runners. A foldable screen door characterized in that the net is hung on the upper frame by opening and closing the net by mounting these runners on the rails of the upper frame so that they can roll. 6. The accordion-type telescopic base according to claim 1, wherein:
A foldable screen door, which is fixed to an inner bottom of a storage case for storing the net, and has a storage area for the net in a folded state between the storage case and the operating frame. 7. The accordion-type telescopic base according to claim 3, wherein:
It is fixed to the inner bottom of a storage case for storing the net, and a storage area for the net in a folded state is formed between the storage case and the operating frame, and the overlapping thickness of the net when the net is folded A folding screen door that is larger than the depth.