Pleated screen

Abstract

To eliminate the distortion of pleats when a screen is folded through a simple structure.SOLUTION: A pleated screen includes a screen, a cord, a rail member, and a correcting member. The screen has a plurality of vertically continuous pleats that can be folded and unfolded. The cord is inserted through the rear surface side of the pleats, hangs down, and can be raised and lowered. The rail member is connected to a lower end of the screen and one end of the cord, and supports the pleats so that the pleats protrude forward at an upper end of the rail member when the screen is folded. The correcting member is provided along the longitudinal direction of the rail member on the rear surface side of the pleats so as to correct the distortion of the pleats near the upper end of the rail member when the screen is folded. The correcting member is provided on the rear surface side of at least the pleats directly above the rail member among the pleats near the upper end of the rail member.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a pleated screen. [Background technology]

[0002] A known conventional pleated screen is configured in such a way that a lifting cord is inserted into the screen at a position shifted rearward from the center of the screen's front-to-back width, a bottom rail with a front-to-back width narrower than the screen's front-to-back width is suspended from the lifting cord, and the screen can be folded upwards while stacked on the bottom rail.

[0003] In this type of pleated screen, the pleats are not supported by the bottom rail when the screen is folded, so if the screen is not rigid enough, the straightness of the pleats in the longitudinal direction may not be maintained and they may become distorted. As a result, part of the folded screen may slip off the bottom rail.

[0004] The pleated screen disclosed in the following Patent Document 1 solves the above-mentioned problems by including a bottom rail having a support piece formed thereon that extends forward from the upper end. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2008-274653 A Summary of the Invention [Problem to be solved by the invention]

[0006] However, since the pleated screen shown in the above document is equipped with a special bottom rail, there has been a demand for a technology that can eliminate distortion of the pleats with a simpler structure.

[0007] The present invention has been made in consideration of the above problems, and has an object to provide a pleated screen that has a simple structure and can eliminate distortion of the pleats when the screen is folded. [Means for solving the problem]

[0008] In order to achieve the above object, a pleated screen according to one embodiment of the present invention comprises a screen, a cord, a rail material, and a straightening member. The screen has a plurality of pleats arranged in a vertical direction and is capable of folding and unfolding. The cord is inserted through the back side of the pleats and hangs down, and is capable of moving up and down. The rail material is a rail material connected to the lower end of the screen and one end of the cord, and supports the pleats so that the pleats protrude forward at the upper end of the rail material when the screen is folded. The straightening member is provided on the back side of the pleats along the longitudinal direction of the rail material so as to be able to correct distortion of the pleats near the upper end of the rail material when the screen is folded. The straightening member is provided on the back side of at least the pleats directly above the rail material among the pleats near the upper end of the rail material.

[0009] According to this configuration, with a simple structure in which a straightening member is provided on the back surface side of at least the lowest pleat, distortion of the pleats when the screen is folded can be eliminated.

[0010] The straightening member may be a plate provided between the pleat and the cord and sandwiched between the folded pleat to straighten distortion of the pleat.

[0011] According to this configuration, the same effect as above can be obtained with a simple structure in which only a new plate is provided.

[0012] The plate may be formed to a size such that, when sandwiched between the folded pleats, the end of the plate on the pleat side in the short direction and the apex of the pleat are at approximately the same position in the front-to-rear direction.

[0013] This configuration can further improve the effect of eliminating distortion of the pleats.

[0014] The plate may have a notch formed at an end portion of the plate on a cord side in a short direction thereof so that the cord can be inserted therethrough.

[0015] This configuration makes it possible to prevent the plate from being displaced in the longitudinal direction when the pleated screen is operated. Also, it makes it possible to attach the plate later.

[0016] The plate may have an insertion hole formed so that the cord can be inserted therethrough.

[0017] With this configuration, it is possible to prevent the plate from being misaligned in the longitudinal and lateral directions when the pleated screen is operated.

[0018] The straightening member may be a fabric member attached to the back surface of the pleat to increase the rigidity of the pleat.

[0019] The straightening member may be at least one rod-shaped member attached to the back surface of the pleat to increase the rigidity of the pleat.

[0020] According to these configurations, distortion of the pleats can be eliminated with a simple structure that simply requires attaching a member that increases the rigidity of the pleats to the back surfaces of the pleats. Effect of the Invention

[0021] As described above, according to the present invention, it is possible to eliminate the distortion of pleats when folding a screen with a simple structure. However, this effect does not limit the present invention. [Brief description of the drawings]

[0022] [Figure 1] FIG. 1 is a front view of a pleated screen according to a first embodiment of the present invention in an unfolded (lowered) state. [Diagram 2] FIG. 2 is a right side view of the vicinity of the bottom rail of the pleated screen of FIG. 1. [Diagram 3] FIG. 3 is a plan view of the plate of FIG. 2. [Figure 4] FIG. 4 is a perspective view showing a method of attaching the plate. [Diagram 5] 1 is a front view of the vicinity of the bottom rail when the pleated screen is folded. FIG. [Figure 6] FIG. 6 is a front view of a conventional pleated screen not having the plate, in comparison with FIG. 5. [Figure 7] FIG. 11 is a perspective view of the vicinity of the bottom rail of a pleated screen according to a modified example of the present invention. [Figure 8] FIG. 11 is a right side view of the vicinity of the bottom rail of the pleated screen according to the second embodiment of the present invention. [Figure 9] FIG. 11 is a perspective view of the vicinity of the bottom rail of a pleated screen according to a third embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0024] First Embodiment First, a first embodiment of the present invention will be described.

[0025] [Composition of pleated screens] Fig. 1 is a front view of the pleated screen according to this embodiment in an unfolded (lowered) state, and Fig. 2 is a right side view of the vicinity of the bottom rail of the pleated screen in Fig. 1. Fig. 2(a) shows the screen in an unfolded state, and Fig. 2(b) shows the screen in the middle of folding.

[0026] As shown in FIG. 1, a pleated screen 100 according to this embodiment has a head box 1, and an upper screen 2 and a lower screen 4 supported by the head box 1 so as to be movable up and down.

[0027] The upper end of the upper screen 2 is connected to the head box 1 via a mounting plate. The lower end of the upper screen 2 is connected to the intermediate bar 3 via a mounting plate, and the upper end of the lower screen 4 is connected to the intermediate bar 3 via a mounting plate. The lower end of the lower screen 4 is connected to the bottom rail 5 via a mounting plate.

[0028] Both the upper screen 2 and the lower screen 4 are pleated screens in which a plurality of pleats folded in an accordion-like shape in the Y direction of the figure are formed so that they can be folded and unfolded in the vertical direction (Y direction). The fabric of the upper screen 2 is made of, for example, a see-through material that can transmit light. On the other hand, the fabric of the lower screen 4 is made of, for example, a material that does not transmit light and has high light blocking properties. The front-to-back width (length in the Z direction) of the upper screen 2 and lower screen 4 when folded is, for example, 30 to 35 mm.

[0029] 2, a protrusion 41 is formed on each pleat on the back side of the lower screen 4. Although not shown, a protrusion is also formed on each pleat on the back side of the upper screen 2, and the protrusion 41 is formed, for example, by overlapping the peaks of each pleat by a predetermined length (for example, 5 to 10 mm) from the apex of each pleat and joining them by welding or the like.

[0030] An insertion hole 45 is formed in the protruding portion 41, and a similar insertion hole is also formed in the protruding portion of the upper screen 2 (not shown). The lifting / lowering cord 6 hangs down from the head box 1 and passes through the insertion hole in the protruding portion of the upper screen 2 and the insertion hole 45 in the protruding portion 41 of the lower screen 4. The lower end of the lifting / lowering cord 6 is connected to the bottom rail 5 by being hooked to a cord holder of the bottom rail 5. The light control cord 7 hangs down from the head box 1 and passes through the insertion hole in the protruding portion of the upper screen 2. The lower end of the light control cord 7 is connected to the intermediate bar 3 by being hooked to a cord holder (not shown) of the intermediate bar 3.

[0031] In this way, by not exposing the dimmer cord 7 that passes through the upper screen 2 and the lift cord 6 that passes through the upper screen 2 and the lower screen 4 on the screen surface side, the design is improved and it is possible to prevent light leakage from the insertion holes in the upper screen 2 and the insertion holes 45 in the lower screen 4.

[0032] Although not shown in FIG. 2, pitch cords are provided on the rear side of each of the upper screen 2 and the lower screen 4 to maintain the pleats of the upper screen 2 and the lower screen 4 at regular intervals.

[0033] The upper screen 2 can be unfolded by raising and lowering the middle bar 3 through the raising and lowering of the dimmer cord 7, and the lower screen 4 can be unfolded by raising and lowering the bottom rail 5 through the raising and lowering of the lifting cord 6.

[0034] The head box 1 has a horizontally elongated rectangular shape and is fixed to a fixed surface such as the ceiling surface of a window frame or a wall surface inside a building by screws or the like via approximately L-shaped brackets 16 arranged on its top and rear surfaces.

[0035] A first drive system for raising and lowering the upper screen 2 and a second drive system for raising and lowering the lower screen 4 are provided inside the head box 1. The first drive system and the second drive system are arranged side by side in the front-to-rear direction (Z direction in the figure) inside the head box 1, and only the front first drive system is shown in Figure 1.

[0036] For example, the first drive system and the second drive system may be arranged side by side at different positions in the vertical direction, or the arrangement of the first drive system and the second drive system may be reversed in the front-rear or vertical direction.

[0037] 1, each drive system is composed of two winding drums 9 (winding drum 9a for the intermediate bar 3 and winding drum 9b for the bottom rail 5 (not shown)), a drive shaft 10 (drive shaft 10a for the intermediate bar 3 and drive shaft 10b for the bottom rail 5 (not shown)), a brake 11 (brake 11a for the intermediate bar 3 and brake 11b for the bottom rail 5 (not shown)), and a stopper 12 (stopper 12a for the intermediate bar 3 and stopper 12b for the bottom rail 5 (not shown)). In addition, a lower limit 17 is provided, for example, at the left end of the head box 1.

[0038] The drive shafts 10a and 10b are each a rectangular columnar member extending in the left-right direction (X direction) in the figure, and are supported within the head box 1 so as to be rotatable with their axial centers directed in the left-right direction.

[0039] The winding drum 9a is inserted through the drive shaft 10a so as to rotate integrally with the drive shaft 10a, and one end of the light control cord 7 is connected to the winding drum 9a so as to be able to be wound and unwound. The winding drum 9b is inserted through the drive shaft 10b so as to rotate integrally with the drive shaft 10b, and one end of the lift-up cord 6 is connected to the winding drum 9b so as to be able to be wound and unwound.

[0040] The stoppers 12a and 12b restrict the rotation of the drive shafts 10a and 10b in the unwinding direction, respectively. The stoppers 12a and 12b are switchable between a state in which the rotation of the drive shafts 10a and 10b is restricted and a state in which the rotation of the drive shafts 10a and 10b is permitted.

[0041] Brakes 11a and 11b reduce the unwinding speed (rotation speed of winding drums 9a and 9b) of dimmer cord 7 and lifting cord 6, respectively, thereby mitigating the impact force caused by intermediate bar 3 when upper screen 2 descends to its lower end position, and the impact force caused by bottom rail 5 when lower screen 4 descends to its lower end position.

[0042] The lower limit 17 supports the other end of each of the drive shafts 10a and 10b, and regulates the amount of the lifting cord 6 that is unwound by the winding drum 9b to a preset maximum amount in response to the rotation of the drive shaft 10b. The maximum amount of unwinding is adjustable, which allows the lower limit position of the bottom rail 5 to be set.

[0043] In addition, the head box 1 is also provided with an interlocking mechanism that switches between an independent state in which the drive shaft 10a of the winding drum 9a and the drive shaft 10b of the winding drum 9b rotate independently and an interlocking state in which they rotate in conjunction with each other.

[0044] The operation unit 13 is composed of an endless operation cord 14 (e.g., a ball chain), a pulley 15 around which the operation cord 14 is wound, and other operation shafts connected to the pulley 15 so as to rotate integrally, and raises and lowers the upper screen 2 and lower screen 4 in response to the user's raising and lowering operation of the operation cord 14.

[0045] Of the above-mentioned operating cord 14, the chain at the back when viewed from the front is used to raise and lower the dimmer cord 7 (upper screen 2 and middle bar 3), and the chain at the front is used to raise and lower the lifting cord 6 (lower screen 4 and bottom rail 5).

[0046] Both longitudinal ends of the intermediate bar 3 are open so that the lower end of the upper screen 2 and the upper end of the lower screen 4 can be inserted during assembly, and rail caps 3a are removably provided in the openings. Similarly, rail caps 5a are removably provided in the openings in both longitudinal ends of the bottom rail 5 so that the lower end of the lower screen 4 can be inserted.

[0047] 2, the bottom rail 5 has a generally trapezoidal cross section (a trapezoidal column with the bottom base longer than the top base). The lower end of the lift cord 6 is connected to the surface of the bottom rail 5 that corresponds to the upper base of the trapezoid in the figure, and the lower end of the lower screen 4 is connected to the surface that corresponds to the left leg (left side) of the trapezoid.

[0048] As shown in FIG. 2(a), the connecting surface of the bottom rail 5 with the lower end of the lower screen 4 is designed to face obliquely upward when the lower screen 4 is fully unfolded and at its lowest position.

[0049] As shown in FIG. 2(b), the bottom rail 5 supports the pleats at the upper end of the bottom rail 5 so that the pleats protrude forward (in the Z direction) when the lower screen 4 is folded.

[0050] As shown in the figure, a plate 20 is provided along the longitudinal direction of the bottom rail 5 on the back side of the pleats immediately above the bottom rail 5 among the pleats near the upper end of the bottom rail 5. The plate 20 is provided as a correction member capable of correcting distortion of the pleats near the upper end of the bottom rail 5 when the lower screen 4 is folded. The plate 20 is made of, for example, a transparent resin material (PMMA, PC), which suppresses the change in color of the screen at the portion where the plate 20 is provided when light passes through the lower screen 4. Note that the distortion referred to here includes "wavy" in which the tip of the pleat has a wavy shape along the longitudinal direction, and "slack" in which the pleat has a drooping shape between the lift cords 6 in the longitudinal direction (i.e., between the pitch cords not shown).

[0051] [Plate details] Fig. 3 is a plan view of the plate 20 in Fig. 2. Fig. 4 is a perspective view showing a method for attaching the plate 20. Note that the bottom rail 5 is omitted in Fig. 4. Fig. 5 is a front view of the vicinity of the bottom rail 5 when the pleated screen 100 is folded. Fig. 6 is a front view of a conventional pleated screen not having the plate 20, in comparison with Fig. 5.

[0052] As shown in Fig. 6, in a conventional pleated screen in which the pleats are supported by a bottom rail at the upper end thereof so that the pleats protrude forward when the screen is folded, the pleats protruding forward are not supported by the bottom rail when the screen is folded. Therefore, if the rigidity of the screen is weak, the straightness of the pleats in the longitudinal direction is not maintained, and the pleats may become wavy or slack (especially in the parts far from the pitch cord), resulting in a problem of distortion. As a result, a part of the folded screen may slip off the bottom rail. The plate 20 according to this embodiment is provided for the purpose of correcting this distortion of the pleats.

[0053] As shown in FIGS. 2 to 4, the plate 20 is provided between the pleats directly above the bottom rail 5 and the lifting cord 6 along the longitudinal direction of the bottom rail 5 so as to be sandwiched between the folded pleats.

[0054] 2(b) and 4(b), the plate 20 is formed to have a size such that, when the plate 20 is sandwiched between the folded pleats, the edge 22 of the end of the plate 20 on the pleat side in the short direction is substantially at the same position as the apex of the pleat in the front-rear direction (Z direction). As a result, the plate 20 acts to press the apex of the pleat from the back side from the rear to the front in the front-rear direction (Z direction).

[0055] 3 and 4, the plate 20 has a notch 21 formed at the end opposite the edge 22 (the lift-up cord 6 side) through which the lift-up cord 6 can be inserted. As shown in Fig. 4, when attaching the plate 20 to the pleated screen 100, the edge 22 is aligned with the back side of the apex of the pleat, and the plate 20 is inserted laterally between the pleat and the lift-up cord 6 with its main surface facing forward as shown by the arrow in Fig. 4(a), and then the plate 20 is rotated about 90 degrees around the edge 22 (apex of the pleat) as an axis, and the lift-up cord 6 is inserted into the notch 21 at the other end as shown in Fig. 4(b).

[0056] In this way, by providing the plate 20 with the notch 21 through which the lifting cord 6 is inserted, it is possible to prevent the plate 20 from shifting in position in the longitudinal direction (X direction) when operating the pleated screen 100. In addition, it also becomes possible to attach the plate 20 after manufacturing the pleated screen.

[0057] [Pleated screen operation] Next, the operation of the pleated screen 100 configured as above will be described, focusing particularly on the lower screen 4 and the plate 20.

[0058] First, when the lower screen 4 is to be unfolded (lowered) from its folded state, the user releases the stopper 12b by operating the operating cord 14. This causes the bottom rail 5 and the lower screen 4 to lower under their own weight, and the lower screen 4 unfolds as shown in FIG.

[0059] Next, when the lower screen 4 is to be folded (raised) from its unfolded state, the user operates the operating cord 14 to rotate the lifting / lowering cord 6 in the winding direction, causing the drive shaft 10b and the winding drum 9b to rotate together, causing the winding drum 9b to wind up the lifting / lowering cord 6, and the bottom rail 5 to rise, causing the lower screen 4 to be folded sequentially from the bottommost pleat to the topmost pleat. After this, when the operation of the operating cord 14 is finished, the rotation of the drive shaft 10b is restricted by the stopper 12b, and the folded state of the lower screen 4 is maintained (FIG. 2(b)).

[0060] At this time, by providing the plate 20 on the back surface of the pleats directly above the bottom rail 5, as shown in Fig. 5, it is possible to straighten and eliminate distortion of the pleats (see Fig. 6) near the upper end of the bottom rail 5 when the lower screen 4 is folded, and maintain the straightness of the pleats. In other words, it is possible to straighten and eliminate "wavy" and "slack" of the pleats near the upper end of the bottom rail 5.

[0061] Although the plate 20 is a long, flat member in the above embodiment, it may be formed, for example, by bending at least a part of the rear end in the front-rear direction (Z direction) (i.e., the side where the notch 21 is formed) along the longitudinal direction into an L-shaped cross section. With such a shape, the rigidity of the plate 20 along the longitudinal direction is increased, so that even if the lower screen 4 is made of a heavy fabric, for example, the above-mentioned distortion of the pleats can be corrected and eliminated against the weight.

[0062] <Modification of the first embodiment> 7 is a perspective view of the vicinity of the bottom rail 5 of a pleated screen 100 according to a modified example of the first embodiment. Note that the bottom rail 5 is also omitted in this figure.

[0063] In the first embodiment described above, the plate 20 is fixed in the longitudinal direction (X direction) by inserting the lift cord 6 through the notch 21. Instead, in this modification, as shown in the figure, the plate 20 has an insertion hole 23 at the end side opposite the edge portion 22, through which the lift cord 6 can be inserted.

[0064] With this configuration, the plate 20 is fixed by the lifting cord 6, so that the plate 20 can be prevented from shifting in position in the longitudinal and lateral directions when the pleated screen 100 is operated.

[0065] In this modified example, since the plate 20 is fixed to the lifting cord 6, unlike the first embodiment described above, the edge 22 of the plate 20 and the top of the pleat do not have to be formed to a size that is approximately at the same position in the front-to-back direction (Z direction).

[0066] <Second embodiment> Next, a second embodiment of the present invention will be described. In this and subsequent figures, parts having the same configurations and functions as those in the first embodiment are given the same reference numerals, and the description thereof will be omitted.

[0067] FIG. 8 is a right side view of the vicinity of the bottom rail 5 of the pleated screen 100 according to this embodiment.

[0068] In the above-described first embodiment, the plate 20 is provided as a straightening member, but in this embodiment, a fabric member 30 is provided on the back surface of the pleats immediately above the bottom rail 5 as a straightening member instead.

[0069] The fabric member 30 is made of, for example, a foldable fabric that is thicker than the lower screen 4, and is attached to the back surface of the pleat directly above by welding or the like, thereby having the effect of increasing the rigidity of the pleat.

[0070] With this configuration, distortion of the pleats can be eliminated with a simple structure in which the fabric member 30 that increases the rigidity of the pleats is attached to the back surface of the pleats.

[0071] <Modification of the second embodiment> In the second embodiment described above, the fabric member 30 is attached to the back surface of the pleats by welding or the like. Alternatively, a pleated member having a shape similar to that of the fabric member 30 may be attached to the back surface of the pleats by a method other than welding. Specifically, the pleats of the pleats of the pleats of the pleats of the pleats of the lower screen 4 are attached so that the tops of the pleats of the pleats of the lower screen 4 come into contact with the tops of the pleats of the lower screen 4 from the back side, and at least a part of the pleats is fixed to the back surface of the pleats so as to be linked to the folding and unfolding of the lower screen 4. The pleats of the pleats of the pleats of the lower screen 4 may be made of fabric, resin, metal, or the like. The pleats of the pleats of the pleats of the lower screen 4 do not necessarily have to be fixed directly to the back surface of the pleats, and may be attached to the back surface of the pleats so that the pleats of the pleats are inserted through the lifting cord 6 and cannot move in the front-rear direction (Z direction), for example.

[0072] <Third embodiment> Next, a third embodiment of the present invention will be described. Fig. 9 is a perspective view of the vicinity of the bottom rail 5 of a pleated screen 100 according to a third embodiment of the present invention.

[0073] As shown in the figure, in this embodiment, instead of the plate 20 of the first embodiment and the fabric member 30 of the second embodiment, a rod-shaped member 40 is provided on the back surface of the pleats immediately above the bottom rail 5 as a correcting member.

[0074] The rod-shaped member 40 has the effect of increasing the rigidity of the pleats by being attached to the back side of the apex of the pleats by, for example, adhesion. The rod-shaped member 40 is, for example, cylindrical with a diameter of several mm, but the diameter and shape are not limited to this. Also, in the figure, only one rod-shaped member 40 is provided, but multiple rod-shaped members 40 may be provided. Also, the rod-shaped member 40 may be attached by being inserted and accommodated in a long, narrow bag-like accommodation portion provided along the back side of the apex, instead of by adhesion.

[0075] According to this configuration, the distortion of the pleats can be eliminated by a simple structure in which the rod-shaped member 40 for increasing the rigidity of the pleats is attached to the back surface of the pleats.

[0076] [Variations] The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit and scope of the present technology.

[0077] In each of the above-described embodiments, the plate 20, fabric member 30, and rod-shaped member 40 serving as the straightening members are provided one each on the back side of the pleat immediately above the bottom rail 5 among the pleats in the vicinity of the upper end of the bottom rail 5. However, these straightening members may be provided not only on the pleat immediately above the bottom rail 5 but also on the back side of the pleats above that.

[0078] In each of the above-described embodiments, the straightening member is provided on the pleats near the upper end of the bottom rail 5 serving as the rail material. Alternatively or in addition to this, the straightening member may be provided on the pleats near the upper end of the intermediate bar 3 serving as the rail material.

[0079] In each of the above-described embodiments, the upper screen 2 is formed of a see-through material that is capable of transmitting light, and the lower screen 4 is formed of a material that does not transmit light and has high light-blocking properties. However, the opposite may be true, in which the upper screen 2 is formed of a material that has high light-blocking properties, and the lower screen 4 is formed of a see-through material. In this case as well, the correcting member may be provided in the pleats near the upper end portion of at least one of the bottom rail 5 and the intermediate bar 3.

[0080] Furthermore, the straightening member of the present invention may be applied to the bottom rail of a pleated screen having a single screen, rather than a pleated screen divided into an upper screen 2 and a lower screen 4 as in the above embodiments.

[0081] In each of the above-described embodiments, an example has been shown in which the bottom rail 5 has a generally trapezoidal cross section (a trapezoidal column with the bottom base longer than the top base) and the pleats are supported by a surface corresponding to the upper base of the trapezoid, but the shape of the bottom rail 5 (and intermediate bar 3) is not limited to this. For example, the present invention is similarly applicable to pleated screens having any rail material, such as a generally rectangular parallelepiped shape, as long as the pleats are supported so as to protrude forward at the upper end of the rail material (bottom rail or intermediate bar). [Explanation of symbols]

[0082] 1. Head box 2. Upper screen 3. Middle bar 4. Lower screen 5. Bottom rail 6....Lifting cord 7....Dimmer cord 20...Plate 21...Notch 22...Edge 23...Through hole 30...Fabric material 40... Rod-shaped member 100...Pleated screen

Claims

1. A folding and unfolding screen having a plurality of pleats extending in the vertical direction; A cord that can be raised and lowered and that passes through the back side of the pleats and hangs down; a rail material connected to a lower end of the screen and one end of the cord, the rail material supporting the pleats such that the pleats protrude forward at an upper end of the rail material when the screen is folded; a straightening member provided on the rear side of the pleats along the longitudinal direction of the rail material so as to be capable of straightening distortion of the pleats in the vicinity of the upper end portion of the rail material when the screen is folded; Equipped with The straightening member is provided on the back side of at least the pleat immediately above the rail material among the pleats in the vicinity of the upper end portion of the rail material. Pleated screen.

2. 2. The pleated screen according to claim 1, The straightening member is a plate provided between the pleats and the cord, and is sandwiched between the folded pleats to straighten distortion of the pleats. Pleated screen.

3. 3. The pleated screen according to claim 2, The plate is formed to a size such that, when the plate is sandwiched between the folded pleats, the end of the plate on the pleat side in the short direction and the apex of the pleat are at substantially the same position in the front-rear direction. Pleated screen.

4. The pleated screen according to claim 2 or 3, The plate has a notch formed at an end portion on the cord side in the short direction of the plate so that the cord can be inserted therethrough. Pleated screen.

5. The pleated screen according to claim 2 or 3, The plate has an insertion hole through which the cord can be inserted. Pleated screen.

6. 2. The pleated screen according to claim 1, The straightening member is a fabric member that is attached to the back surface of the pleat to increase the rigidity of the pleat. Pleated screen.

7. 2. The pleated screen according to claim 1, The straightening member is at least one rod-shaped member that is attached to the back surface of the pleat to increase the rigidity of the pleat. Pleated screen.

Images