JPH09296669A - Folding screen device and screen replacing method in the device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily replace only a screen, when a screen of a screen device is replaced, without taking out the screen device, as a whole, out of an opening of a building. SOLUTION: Stretch cords 22a-22d are passed through a screen 1 in an open/ closure direction to detachably mount the screen 1, which is made expandable by folding it, between a side frame 13 of a screen frame 10 and a movable stile 16. An end of each of the cords which has a small diameter so as to be passed through or pulled out of the screen 1 and which is passed through the screen 1 so as to be attached to the stile 16 is releasably fixed to each of fixtures 23a-23d provided on the stile 16, and the ends of the cords are so located as to be detached, while the frame 10 is mounted to the opening of a building.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding screen device attached to a building opening for insect protection, light shielding, heat insulation, etc., and a screen replacement method in the device.

[0002]

2. Description of the Related Art A large number of pleats are applied to a screen such as a net and bent alternately in opposite directions to prevent insects and shade in a building opening. Has already developed a screen device that can be opened and closed to the left and right. In addition, for light shielding and heat insulation of building openings, a light-shielding sheet material is also made extensible like an accordion, or the material is formed into a tubular shape and is folded by pleats at both ends. We have already proposed a screen device that can be opened and closed left and right by forming a stretchable screen in which tubular pieces are connected in series by sequentially joining the pieces at joints with a constant width along the longitudinal direction. Has been done.

In this type of screen device, a movable frame is attached to the tip of the screen to open and close the screen, and a tension string is appropriately stretched between the movable frame and the screen frame to provide a parallel movement mechanism. It is very advantageous to make the movable frame in parallel by this parallel movement mechanism in order to facilitate the opening / closing operation (see, for example, Japanese Utility Model Laid-Open No. 6-1696). This tension string is also used by inserting a part thereof into the screen to prevent slack of the screen and fluctuation due to wind or the like.
Further, a tension string may be inserted through the screen only for the purpose of preventing the screen from loosening or fluctuating (see, for example, FIG. 6 of Japanese Utility Model Laid-Open No. 6-32690).

However, in such a screen device in which the tension cord is inserted through the screen and stretched, the tension cord is also stretched around the screen frame, so that the screen is soiled or broken, and it is attempted to be replaced. In this case, it is not easy and easy to easily remove the tension cord and remove the screen, insert the tension cord into a new screen, and stretch the tension cord inside the screen frame. In particular, at the tip of the tension cord, in order to facilitate the fixation of the tension cord tip to the side frame and the movable frame with screws, and the adjustment of its fixing position,
Although the metal ring is caulked, in such a structure,
Unless the metal ring is removed by cutting the tension cord, the tension cord cannot be removed from the screen frame and the screen and the screen cannot be replaced.Moreover, when replacing the screen, the tension cord with the metal ring cut must also be replaced. Yes, and since the tension cord is stretched around the screen frame, it is necessary to remove the screen frame from the building opening in order to replace it.

Such a work of exchanging the screen and the tension cord cannot be easily performed by the user of the screen device, and furthermore, when the screen frame is removed, the building opening around the screen frame is also partially damaged. In some cases, as a result, the screen device itself is replaced, and it is not easy to replace only the screen. Then, realistically, the structure is modified so that the screen can be removed together with the tension cord from the screen frame, or the screen device is once removed from the building opening, and the tension cord is readjusted at the same time as replacing the screen in the assembly plant. This is generally the case.

[0006]

SUMMARY OF THE INVENTION The technical problem to be solved by the present invention is to connect one end of a foldable and extendable screen to a side frame of a screen frame installed in a building opening, and to connect the other end of the screen to the side frame. , A frame connected to a movable frame for opening / closing operation guided by a screen frame, and a tension cord inserted through the screen in the opening / closing direction, and one end of the tension cord is attached to a side frame of the screen frame to which the end of the screen is attached. Another object of the present invention is to provide a folding screen device in which only the screen can be easily replaced in a screen device connected to a movable frame, and a screen replacement method in the device.

A further specific technical problem of the present invention is that when replacing the screen, it is possible to easily replace only the screen without removing the entire screen device from the building opening and leaving the tension cord or the like as it is. It is an object of the present invention to provide a folding screen device and a method for replacing the screen in the device.

[0008]

The folding screen device of the present invention for solving the above-mentioned problems is basically composed of a side frame of a screen frame installed in a building opening, which is made of a screen which is expandable / contractible by folding. While connecting one end, the other end of the screen is connected to a movable frame for opening and closing operations in which the upper and lower ends of the screen are guided by the screen frame, and a tension cord is inserted in the opening and closing direction of the screen to remove the tension cord. In a screen device in which one end is connected to a side frame of a screen frame to which the end of the screen is attached or to a movable frame, both ends of the screen are detachably attached to the side frame of the screen frame and the movable frame, respectively, and inserted into the screen. Attach one end of the stretched cord attached to the side frame or movable frame to the side frame or movable frame with a small diameter that can be inserted into and withdrawn from the screen. Freely allowed locked, and, is characterized in that the locking position of the end of 該張 cord, provided disengaged possible positions while attaching the screen frame to the building opening.

In the above folding screen device,
At the same time as forming the parallel moving mechanism of the movable frame with the tension string, in order to prevent the screen from slackening and fluctuation due to wind, etc. Then, the end portion of the screen is turned upside down by a turner provided on the connected side frame, and by turning at the upper end or the lower end of the side frame, the other side is passed through inside the upper or lower frame. It can be guided to a side frame, turned by a turning element installed on the side frame, folded back inside the frame, and the tip can be fixed to the movable frame.
In addition, for the same purpose, after inserting a plurality of tension cords with one end attached to the side frame that connects the end portions of the screen into the screen, respectively, with the turning element provided on the movable frame in either the up or down direction. The upper end or the lower end of the movable frame can be turned to guide to the opposite side frame through the upper or lower frame, and the end portion of the tension cord can be substantially fixed to the side frame.

Further, in the above screen device,
To prevent screen slack and fluctuations due to wind,
Tension applying means for inserting a tensioning string having one end attached to the movable frame at intervals and passing through the screen, and then applying an urging force in the opening direction to the movable frame in the side frame connecting the ends of the screen. Can be connected to. Further, in any of the above cases, a loop is formed at one end of the tension cord inserted through the screen to be attached to the side frame or the movable frame, and the loop is used as a locking tool attached to the side frame or the movable frame so as to be positionally adjustable. Can be locked.

On the other hand, in the screen exchange method of the present invention for exchanging the screen in the folding screen device, the end portion of the existing screen is removed from the side frame and the movable frame, and the side frame of the tension string inserted into the screen is removed. Or, remove one end attached to the movable frame, pull out the tension cord from the screen, insert the drawing-in line in advance at the insertion position of the above-mentioned tension string on the new screen to be replaced, and insert the above-mentioned screen at the tip of the line. By locking the tip of the tension cord extracted from the above and pulling out the filament, the tension cord is inserted into a desired position on a new screen, and in this state, the tip of the tension cord is replaced with the original side frame or It is characterized in that it is locked to a movable frame, and both ends of a new screen are attached to a side frame and a movable frame, respectively.

In the folding screen device having the above structure, a movable frame is attached to the front end of the screen for opening and closing the screen, and the folding screen device is stretched between the movable frame and the screen frame in the same manner as the conventional screen device. By the translation mechanism formed by the tension cord, the movable frame can be moved in parallel, and at the same time, by inserting the tension cord into the screen, it is possible to prevent the screen from slacking or fluctuating due to wind, etc. Can be used only for the purpose of preventing slack and fluctuation of the screen.

Then, both ends of the screen are detachably attached to the side frame and the movable frame of the screen frame, respectively, and one end of the tension cord inserted through the screen is attached to the side frame or the movable frame by a knot. In a state of a small diameter such that a loop can be formed and which can be inserted into and withdrawn from the screen, it is detachably locked to the side frame or the movable frame, and the locking position of one end of the tension cord is set to the building. Since the tension cord is installed at a position where the screen frame is attached to the opening, the screen can be easily replaced without removing the entire screen device from the building opening when replacing the screen. it can.

That is, in order to replace the screen in the folding screen device, first, the end of the existing screen is removed from the side frame and the movable frame, and then attached to the side frame or the movable frame of the tension cord inserted into the screen. Remove one end and pull out the tension cord from the screen.On the other hand, insert a pull-in line in advance at the insertion position of the above-mentioned tension line on the new screen to be replaced, and pull the pull-out line from the screen at the tip of the line. By locking the tip of the cord and pulling out the filament, the tension cord is inserted at a desired position on a new screen, and in this state, the tip of the tension cord is engaged with the original side frame or movable frame. At the same time, the both ends of the new screen can be attached to the side frame and the movable frame, respectively. Without removing from the parts, the screen only can be easily replaced.

[0015]

1 to 3 show a first embodiment in which a folding screen device according to the present invention is applied to an insect screen door. In this folding screen device, the screen frame 10 on which the screen 1 is stretched is directly attached to a mounting frame or the like of a building opening such as a window or a doorway, or is attached to an existing aluminum sash or the like installed therein, and is used. As will be described in detail below, when the screen 1 is replaced, only the screen can be easily replaced without removing the screen frame 10, so that the screen frame 10 can be fixed to a building opening or the like. Can be one.

The foldable insect-proof net which constitutes the screen 1 is made accordion-likely expandable by applying a large number of pleats in a zigzag shape to a net material made of synthetic resin or cloth. The screen frame 10 that holds the screen 1 openably and closably is formed by connecting the upper frame 11, the lower frame 12, and the left and right side frames 13 and 14 to each other with screws 15. One side One end of the screen 1 in the expansion / contraction direction is connected to the frame 13, and the other end of the screen 1 is connected to the movable frame 1 for opening / closing.
6, which allows the screen to be opened and closed laterally. The movable frame 16 is formed by guiding the upper frame 11 and the lower frame 12 so that the upper and lower ends thereof are slidable in the left and right directions. Accordingly, it is also possible to attach the rolling wheels that run along the rails provided on the upper frame 11 and the lower frame 12.

When both ends of the screen 1 are attached to the side frame 13 and the movable frame 16 of the screen frame, the ends of the screen 1 are detachably attached. That is, as shown in FIGS. 2 and 4, synthetic resin thin plate-like locking members 17 which are elastically deformed partially or wholly are provided on both left and right end portions of the screen 1 substantially in the vertical direction of the screen. While being provided with a concave groove-shaped screen accommodating portion 18 for accommodating the screen 1 in the side frame 13 of the screen frame 10,
A locking groove 19 having a mouth slightly smaller than the locking member 17 is provided on the inner bottom of the screen accommodating portion 18, and the locking member 17 is press-fitted into the locking groove 19 to form a screen. The end of 1 is detachably fixed. The same applies to the attachment of the locking member 17 at the other end of the screen to the locking groove 21 provided in the inner bottom of the screen housing portion 20 of the movable frame 16.

The fitting of the locking member 17 into the locking grooves 19 and 21 is performed by using a means in which the locking member 17 is made of synthetic resin and is pressed into the locking grooves 19 and 21 by its elastic deformation. One end of the locking member 17 is provided with the locking grooves 19 and 21.
After inserting into the inside and shifting to the side, the other side end is inserted and shifted in the opposite direction so as not to come out from the locking grooves 19 and 21, or the locking grooves 19 and 21 are provided. Without the side frame 13 of the screen frame or the movable frame 1
It is also possible to employ means for detachably fixing the locking member 17 to 6 by screwing or the like. Further, in this manner, both ends of the screen 1 are connected to the screen accommodating portions 18, 20.
When it is attached to the inner bottom of the screen, the movable frame 16 makes the screen 1 in a folded state, and the screen housing portions 18, 2
When it is housed in 0, it is covered by the movable frame 16,
The screen 1 is completely stored in their housing 18, 20.

Movable frame 1 with both ends of the screen attached
In order to prevent slack of the screen 1 bent in a zigzag shape and fluctuation due to wind or the like between the 6 and the side frame 13, an arbitrary number of tension cords 22a inserted in the opening / closing direction of the screen 1 are provided. 22d are stretched, the tension strings 22a to 22d are stretched around the screen frame 10 to form a parallel movement mechanism for moving the movable frame 16 in parallel, or the movable frame 16 is opened. It can be used as a tension applying mechanism or the like for applying the urging force of. In any of these cases, one end of the tension cords 22a to 22d inserted through the screen will be connected to the side frame 13 or the movable frame 16 of the screen frame 10 to which the end of the screen 1 is attached, which will be described below. As described above, the screen 1 can be replaced by making one end of the tension cords 22a to 22d connected to them easily detachable and allowing the cords to be inserted into and removed from the screen 1.

In the first embodiment, as schematically shown in FIG. 3, the tension cords 22a to 22d are used as a parallel movement mechanism for parallel movement of the movable frame 16 to facilitate the opening / closing operation of the screen 1. At the same time, it is used to prevent the screen 1 from slacking or fluctuating due to wind or the like.

That is, the tension cords 22a to 22d are
Each end is attached to the movable frame 16 by the locking tools 23a to 23d, and then they are led out from the movable frame 16 to the screen 1 side so as to keep them at a substantially constant interval in the vertical direction, and horizontally in the screen 1. It is inserted. Then, each of the tension cords 22a to 22d is turned upward by the turning elements 24a to 24d provided on the side frame 13 connecting the ends of the screen 1, and the turning elements 2 at the upper end of the side frame 13 are turned.
By turning at 5, the side frame 1 on the opposite side is passed through the inside of the upper frame 11.
4 which is guided to the 4 side and installed above the side frame 14
It is turned downward by a. At that time, the movable frame 1
The tension cords 22a and 22b, one end of which is connected to the upper half of 6, are guided to the lower end of the side frame 14 by turning at the turning element 26a, and the inside of the lower frame 12 is moved by the turning element 26b installed there.
It is folded back to the side and the tip of the movable frame 1 is held by the locking tool 27a.
The tension cords 22c and 22d, which are connected to the movable frame 16 at one end thereof, are connected to the lower half of the movable frame 16 by folding back the inside of the upper frame 11 and connecting the ends thereof to the movable frame 16 by a locking tool 27b.

A plurality of tension cords 22a to 22d each having one end attached to the movable frame 16 are provided on the side frame 13 to form a turning element 24a.
In the case of turning at ~ 24d, those tension cords 22
The a to 22d may be turned in any of the upper and lower directions, and as a result of the turning, the tension string guided to the upper end or the lower end of the side frame 13 is passed through the inside of the upper or lower frame 11 or 12 to the opposite side. It may be guided to the side frame 14, and turned by the turning elements installed at the upper and lower ends of the side frame 14, folded back inside the upper frame 11 or the lower frame 12, and connected the tip to the movable frame 16. In this case, as a general rule, the tension cords 22a and 22b, which have been derived from the upper half of the movable frame 16 in advance, are attached to the lower end of the movable frame 16 via the turning element at the lower end of the side frame 14 and to the lower part of the movable frame 16. It is effective to smoothly move the movable frame 16 in parallel that the tension cords 22c and 22d led out from the half portion are connected to the upper end of the movable frame 16 via the turning elements at the upper ends of the side frames 13.

A movable frame 16 attached to one end of the screen 1.
Generally, since the posture is not constrained by a screen or the like, it is necessary to keep the posture constant and stably perform parallel translation.
A translation mechanism for translating the movable frame 16 can be configured by a to 22d. That is, movable frame 1
When trying to open and close the screen 1 by manually operating an arbitrary position of 6, for example, near the upper end, the force applied to the upper end portion of the movable frame 16 is applied to the movable frame 16 through the tension cords 22a to 22d connected in the vicinity thereof. Is transmitted to the lower half of the. Therefore, this is equivalent to operating the upper and lower ends of the movable frame 16, and the movable frame 16 can be moved accurately in parallel to perform stable opening and closing operations. Further, since the tension cords 22a to 22d are passed through the screen 1, the tension of the screen 1 is stabilized by preventing looseness of the screen 1 and fluctuation due to wind or the like.

Incidentally, each of the turning elements 24a to 24d, 26 described above.
Each of a and 26b can be formed by a roller-shaped rotatable deflector or a fixed guide member made of a synthetic resin material or the like having a small frictional resistance with the tension cord, and in particular,
It is advantageous that a hole for guiding the tension cord is provided and the inner surface of the hole is formed into a curved surface shape with which the tension cord smoothly slides. Further, when a plurality of tension cords are turned at the same location, a common turning element for turning each tension cord can be provided, but each tension cord can also be provided with a turning element individually. The same applies to the turning elements used in the following examples. In addition, in the first embodiment, the movable frame 16
It shows a case where two tension cords are attached to each of the upper half and the lower half, but an arbitrary number can be attached to each.

The tension cords 22a to 22d are the screen 1
At one end of the portion that is inserted into the movable frame 16, the ends that are attached to the movable frame 16 at intervals are attached to the movable frame 16 by the locking tools 23a to 23d.
The cords are detachably locked with respect to each other, but at the time of locking, the end portions of the respective tension cords are in a small diameter state that can be inserted into and withdrawn from the screen 1. That is, the above-mentioned string 22a
In order to facilitate the attachment to the movable frame 16 with screws or the like and the adjustment of the fixing position thereof, the ends of 22d to 22d are, in the same manner as the case of fixing the end of the wire to the terminal, a connecting cylinder continuously connected to the metal ring. However, in such a structure, when the screen 1 is replaced, the tension cord is attached to the screen 1.
Since it is not possible to remove the screen 1 by simply removing it from the screen and inserting the tension cords into the new screen, as can be seen from FIG. 4C, the tension cords 22a to 22a.
A loop 28 is formed by a knot at one end to be attached to the movable frame 16 of d so that the end of the tension cord can be easily inserted into the screen 1 and can be easily pulled out.

On the other hand, the locking members 23a to 23d and 27a, 27b for locking the loop 28 at each end of the tension cord are as follows.
As clearly shown in FIGS. 4 and 5, a locking hook 32 is projectingly provided on a base 31 which is mounted on the movable frame 16 so as to be positionally adjustable, and a part of the locking hook 32 is provided in a hole 33 provided in the base 31. The loop 2 at the end of the tension cord that is locked to the locking hook 32 by facing the
8 does not easily come off, and these are integrally molded with synthetic resin. The fixing of the locking tool to the movable frame 16 is performed by sandwiching both edges 36 of the mounting groove of the movable frame 16 between the base 31 and the nut 35 into which the screw 34 inserted therein is screwed. By moving the locking tool along the mounting groove of the frame and fastening the screw 34 at an arbitrary position, the position of the movable frame can be adjusted.

Further, the locking tools 23a to 23d for locking the ends of the tension cords 22a to 22d need to be arranged at positions where the tension cords can be engaged and disengaged with the screen frame 10 attached to the building opening. Therefore, in the first embodiment, therefore, a cover 16b for covering the locking members 23a to 23d and 27a, 27b attached to the mounting groove of the movable frame 16 is elastically attached to the frame main body 16a. It is detachably attached. Therefore, by removing the cover 16b from the frame body 16a and loosening the screw 34 to shift the attachment position of the locking tool, the loop 28 at one end of the tension cord can be removed from the locking tool.

Next, a method of exchanging the screen 1 in the folding screen device having the above structure will be described. To remove the screen for replacement, first, as shown in FIG. 4B, the thin plate-shaped locking members 17 provided at both ends of the existing screen 1 are locked to the side frame 13 and the movable frame 16. While removing from the grooves 19 and 21, the movable frame 1
By removing the cover 16b of No. 6 from the frame body 16a, loosening the screws 34 (FIG. 5) of the locks 23a to 23d, and moving the locks along the mounting groove of the movable frame 16,
The tension cords 22a to 22d inserted through the screen 1 are loosened, and the loop 28 at the end portion of the tension cord is locked to the fasteners 23a to 23d.
It is disengaged from the locking hook 32 at. As a result, one end of the tension cords 22a to 22d attached to the movable frame 16 can be removed, and the ends of the tension cords only form the loop 28 by the knot, so that the tension cord ends are screened. It can be easily pulled out from 1.

On the other hand, the new screen 2 to be replaced is provided by inserting the pre-folded lead-in line 38 at the position where the tension cords 22a to 22d should be inserted.
In order to insert the screen 2 into the screen frame 10 instead of the removed screen 1, the ends of the cords 22a to 22d extracted from the old screen 1 are attached to the ring formed by folding the ends of the filaments 38 in half. It suffices that the filament 38 is locked (see the arrow a) and pulled out in the direction of the arrow b in FIG. 4B, whereby the tension cord 38 is pulled to the required position on the new screen 2 as shown in FIG. 22a
~ 22d is inserted.

In this state, the tension cords 22a to 22a are
By locking the loop 28 at the tip of d to the locking members 23a to 23d in the original movable frame 16, and moving these locking devices along the mounting groove of the movable frame 16,
The tension cords 22a to 22d inserted through the screen 2 are tensioned, and in that state, as shown in D of FIG.
~ 23d is fixed to the movable frame 16 with screws 34, and
The screens can be replaced by mounting the locking members 17 at both ends of the new screen 2 in the locking grooves 19 and 21 of the side frame 13 and the movable frame 16, respectively. In the replacement of the screen, as is clear from the above description, it is possible to easily replace only the screen without removing the entire screen device from the building opening and leaving the screen frame 10 attached to the building opening. it can.

FIG. 6 shows a folding screen device according to a second embodiment of the present invention. The screen device of the second embodiment achieves almost the same purpose as the parallel movement mechanism of the first embodiment described above, but a parallel movement mechanism in which a tension cord is stretched around a screen frame in a different manner. Used. Therefore, except for this point, there is substantially no difference from the first embodiment. Therefore, the same parts as those of the first embodiment are designated by the same reference numerals, and the description thereof will be omitted. A configuration unique to the embodiment will be described.

The screen 1 in the second embodiment is
Both ends thereof are detachably connected to the side frame 13 and the movable frame 16 as in the first embodiment, but one end of each side is detachably attached to the side frame 13 by the locking tools 43a and 43b. The plurality of tension cords 42a and 42b are respectively inserted in the opening and closing direction of the screen 1, and then turned upward by the turning elements 44a and 44b provided on the movable frame 16, and the upper ends of the movable frames 16 are turned by the turning. It leads to the side frame 14 on the opposite side through the inside of the frame 11. Furthermore, the tip ends of these tension cords 42a and 42b are turned by a turning element 46a provided at the upper end of the side frame 14 and guided to the lower end of the side frame 14, and turned by a turning element 46b at the lower end of the side frame. The inside of the lower frame 12 is again guided to the movable frame 16, the lower end of the movable frame 16 is turned to guide the inside of the movable frame 16 upward, and the tension cord 42a connected to the upper end of the side frame 13 is movable. The deflector 44c provided on the upper half of the lower part of the frame 16 turns it, and the other tension string 42b is turned by the deflector 44d provided on the lower part of the movable frame 16, and they are passed through the screen 1 again, and the side frame 13 Locking device 43
It is detachably connected by c and 43d.

The tension cords 42a and 42b can be fixed to the side frame 14 at their portions without being turned by the turning elements 46a and 46b at the upper and lower ends of the side frame 14, but in the second embodiment. The fixing strings are omitted and the tension cords to be fixed to the upper and lower ends of the side frame 14 are connected to each other. However, the tension cords vertically inserted through the side frame 14 do not move inside the side frame, and therefore the tension cords have their ends substantially fixed to the upper and lower ends of the side frame 14. Locking tools 43a to 43d for fixing the ends of the tension cords 42a and 42b inserted through the screen to the side frame 13.
Has the same structure as in the case of the first embodiment, and the side frame 1 is provided so that the loop 28 at one end of the tension cords 42a and 42b connected to them can be easily removed.
3 has a part 13a formed so as to be openable. In order to facilitate the screw insertion and removal of the screw 34 for fixing the locking tools 43a to 43d, an insertion hole for the screw is provided on the inner bottom of the locking groove 19 inside the side frame 13. A screw may be screwed in from the insertion hole side.

Therefore, as in the case of the first embodiment,
The locking members 17 provided on both ends of the existing screen 1 are removed from the side frame 13 and the movable frame 16, and a part 13a of the side frame 13 is removed to remove the end portions of the tension cord from the locking tools 43a to 43d. By removing the loop 28, the side frame 1
The ends of the tension cords 42a and 42b can be pulled out from the cord 3, and the ends of those tension cords can be easily pulled out from the screen 1. Further, the tension cords 42a and 42b can be inserted into the new screen 2 in substantially the same manner as in the first embodiment (the insertion direction is opposite), and in that state, the tips of the tension cords 42a and 42b are inserted. By locking the loop 28 to the locking tools 43a to 43d in the original side frame 13 and tensioning the tension cords 42a and 42b, the screen frame 10 can be simply attached to the building opening while only the screen is easily attached. Can be exchanged.

FIG. 8 shows a third embodiment in which the tension cord inserted through the screen is used as a tension applying mechanism for applying a biasing force to the movable frame in the opening direction. This third
The screen device of the embodiment is substantially the same as that of the first embodiment except that the above-mentioned tension cord is used as the tension applying mechanism. The description thereof will be omitted, and in the following, the configuration unique to the third embodiment will be mainly described. That is, in the third embodiment, the tension cords 52a and 52b each having one end attached to the movable frame 16 at intervals are
After being inserted through the screen 1, the side frame 13 connecting the ends of the screen 1 is connected to a tension applying means 55 for applying an urging force to the movable frame 16 in the opening direction. The tension applying means 55 rotatably supports a winding shaft 56 having a built-in spring on the side frame 13 and applies a winding force to the tension cords 52a and 52b wound around the winding shaft 56 by the winding shaft 56. is there. As the tension applying means 55, various means such as using a weight can be adopted.

The tension cord 52 inserted through the screen 1
Although not shown, a locking tool for fixing the ends of a and 52b to the movable frame 16 has the same structure as that of the first embodiment, and is connected to them. Similar to the first embodiment, the elastic cover 16 is elastically attached to the movable frame 16 so that the loops at one end of the tension cords 52a and 52b can be easily removed. Therefore, similarly to the case of the first embodiment, both ends of the screen 1 are removed from the side frame 13 and the movable frame 16, and the loop of the end portion of the tension cord is removed from the locking tool, so that the tension cord 5 is removed.
2a and 52b can be easily pulled out from the screen 1, and the screen frame 10 can be formed in the same manner as in the first embodiment.
The screen can be easily replaced while the is installed in the building opening.

In the above-described embodiments, the case where the insect net is used as the screen has been described. However, when the screen device is used for shielding light, a cloth, a non-woven fabric, a paper, a synthetic resin sheet or the like having a light shielding property is used. Appropriate sheet-shaped materials, or porous materials of these materials may be used. When the screen device is used for heat insulation, the same materials as those described above and having excellent heat insulation properties may be used. . As a screen used for this light shielding and heat insulation, as described above, it is possible to apply a large number of pleats to the screen material in a zigzag shape so that the screen material can be expanded and contracted in an accordion type, but as shown in FIG.
By forming the above-mentioned sheet-shaped material into a tubular shape and joining the tubular portion pieces 3a folded by the pleats at both ends at the joining portions 3b having a constant width along the longitudinal direction thereof,
It is also possible to make the screen 3 expandable and contractable in which the tubular portion pieces 3a are continuously provided.

The screen 3 in which the foldable cylindrical portion pieces 3a are sequentially joined at a constant width at the joint portion 3b in this manner
Then, when the tension cord is inserted, the joining portion 3b of each tubular portion piece 3a is joined.
A hole is formed in the hole to penetrate the tension cord, but by doing so, the tension cord and its insertion hole are not exposed to the outside, and the tension cord itself is entirely contained in the screen to prevent fingers and other objects from being caught. You can Also, the screen 3 is very easily bent, but if a tension cord is passed through the screen,
It is possible to prevent the screen from loosening and stabilize the tensioned state.

[0039]

According to the folding screen device of the present invention and the screen exchanging method in the device described above in detail, when the screen of the screen device is exchanged, the tension cord is not removed from the building opening portion as a whole. Etc. can be left unchanged and only the screen can be easily replaced.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view showing the configuration of a first embodiment of a folding screen device according to the present invention.

FIG. 2 is a horizontal sectional view of the first embodiment.

FIG. 3 is a schematic front view showing the configuration of a parallel movement mechanism in the first embodiment.

4A to 4D are explanatory views of a screen exchange method in the folding screen device according to the present invention.

FIG. 5 is an explanatory diagram of a mode in which the end portion of the tension cord is locked to a locking tool when the screen is replaced.

FIG. 6 is a partially cutaway front view showing the configuration of the second embodiment of the folding screen device according to the present invention.

FIG. 7 is a partially enlarged horizontal sectional view of the second embodiment.

FIG. 8 is a schematic front view showing the configuration of the third embodiment of the folding screen device according to the present invention.

FIG. 9 is a cross-sectional view showing a configuration example of a screen that can be used in each embodiment of the present invention.

[Explanation of reference numerals] 1,2,3 screen 10 screen frame 11 upper frame 12 lower frame 13,14 side frame 16 movable frame 22a-22d, 42a, 42b, 52a, 52b tension cords 23a-23d, 43a-43d locking Tools 24a-24d, 26a, 26b, 44a-44d, 4
6a, 46b Transformer 28 Loop 55 Tension applying means

Claims (6)

[Claims] 1. An opening / closing mechanism in which one end of a screen which is expandable / contractible by folding is connected to a side frame of a screen frame installed in a building opening, and the other end of the screen is guided by the screen frame at upper and lower ends thereof. A screen device in which a movable cord for operation is connected, a tension cord is inserted through the screen in the opening / closing direction, and one end of the tension cord is connected to a side frame of a screen frame to which the end portion of the screen is attached or a movable frame. In the above, both ends of the screen are detachably attached to the side frame and the movable frame of the screen frame, respectively, and one end of the tension cord inserted into the screen is attached to the side frame or the movable frame, and a small diameter which can be inserted into and withdrawn from the screen. In this state, the side frame or the movable frame is detachably locked, and the screen frame is attached to the building opening at the locking position of one end of the tension cord. It provided disengaged possible position to, screen device folded, characterized in that. 2. The folding screen device according to claim 1, further comprising a plurality of tension cords each having one end attached to a movable frame at intervals.
After passing through the screens respectively, the end portions of the screens are turned upside down by the turning elements provided on the connected side frames, and by turning at the upper or lower end of the side frames A folding screen device, characterized in that it is guided to a side frame on the opposite side through, turned by a turning element installed on the side frame, folded back inside the frame, and the tip is fixed to a movable frame. 3. The folding screen device according to claim 1, wherein a plurality of tension cords each having one end attached to a side frame connecting the end portions of the screen are inserted into the screen and then provided on the movable frame. It is turned upside down by a turning element, and by turning at the upper or lower end of the movable frame, it is guided through the upper or lower frame to the side frame on the opposite side, and the end of the tension cord is substantially attached to the side frame. A folding screen device characterized by being fixed. 4. The folding screen device according to claim 1, wherein a tension cord having one end attached to a movable frame at a distance is inserted into the screen, and then a side frame is connected to the end portion of the screen. The folding screen device according to claim 1, wherein the folding screen device is connected to tension applying means for applying an urging force in the opening direction to the movable frame. 5. The folding screen device according to any one of claims 1 to 4, wherein a loop is formed at one end attached to a side frame or a movable frame of a tension string inserted through the screen, and the loop is formed on the side frame or the movable frame. It was locked to a locking tool attached to the frame so that its position could be adjusted.
A folding screen device characterized in that 6. A method for replacing a screen in a folding screen device according to claim 1, wherein an end of an existing screen is removed from a side frame and a movable frame, and Remove the side frame or one end attached to the movable frame of the tension cord inserted in the screen, pull out the tension cord from the screen, and insert the pull-in line in advance at the insertion position of the tension cord in the new screen to be replaced. , The tip of the cord pulled out from the screen is locked to the tip of the line, and the cord is pulled out to insert the cord at a desired position in a new screen. The end of the new screen is locked to the original side frame or movable frame, and both ends of the new screen are attached to the side frame and movable frame, respectively. Screen replacing the folding screen device to.