WO2014038577A1

WO2014038577A1 - Pleated screen

Info

Publication number: WO2014038577A1
Application number: PCT/JP2013/073768
Authority: WO
Inventors: 立川　光威; 慶弘 ▲高▼山; 武信江波戸
Original assignee: 立川ブラインド工業株式会社
Priority date: 2012-09-07
Filing date: 2013-09-04
Publication date: 2014-03-13
Also published as: JPWO2014038577A1; CN104603387B; CN104603387A; TW201414914A; TWI615541B; JP6215831B2

Abstract

A pleated screen is provided with: a head box (1); a screen (2) which is suspended from and supported by the head box (1) and which can be folded in a zigzag shape extending in the vertical direction; a lifting and lowering cord (5) which is suspended from and supported by the head box (1) and which lifts and lowers the screen (2); and a pitch retaining cord (6) which is suspended from and supported by the head box (1) and which retains the distance between the folds of the screen (2) at a set distance. The lifting and lowering cord (5) and the pitch retaining cord (6) are suspended and supported separately at the front and rear of the screen (2). Retaining sections (7) are provided to the pitch retaining cord (6) and penetrate through the screen (2), and the lifting and lowering cord (5) is inserted through the retaining sections (7).

Description

Pleated screen

The present invention relates to a pleated screen in which a screen that can be bent in a zigzag shape is suspended and supported so as to be lifted and lowered.

The pleated screen is a screen in which a screen that can be bent in a zigzag shape in a vertical direction is suspended and supported from a support, and the amount of light is adjusted appropriately by moving the screen up and down with an operating device.

For example, as disclosed in Patent Document 1, joint pieces are respectively provided at both upper and lower edges of a fabric piece provided with a fold in the middle in the vertical direction, and the joint pieces are joined to other fabric joint pieces by means such as welding. Then, there is a screen formed. And the raising / lowering cord is penetrated by the joining piece part of the screen.

By thus inserting the lifting / lowering cord into the joint piece, leakage of outside light from the insertion hole for inserting the lifting / lowering cord into the room is prevented.

Also, when the screen is extended downward, a pitch holding cord for holding the crease interval of the screen constant is supported suspended from the head box behind the screen.

Japanese Patent No. 4845799 Japanese Utility Model Publication No. 6-47584

In the pleated screen disclosed in Patent Document 1, it is possible to prevent leakage of outside light from the insertion hole of the lifting / lowering cord into the room. However, the operation of passing the elevating cord through the insertion hole of the screen joining piece and the ring of the pitch holding cord is complicated.

In the pleated screen disclosed in Patent Document 2, a pleated hook supported by an elongation preventing cord suspended below the screen is inserted into a bottom hole provided in the screen so that the crease interval of the screen is constant. A configuration to hold is disclosed.

However, since the lifting / lowering cord hole is inserted into the lifting / lowering cord hole provided in the screen, the lifting / lowering cord hole needs to have a diameter larger than the diameter of the lifting / lowering cord, and external light leaks into the room from the lifting / lowering cord hole. Moreover, since the individual pleat pieces are inclined with respect to the lifting / lowering cord as the pleat screen descends, the lifting / lowering cord hole provided in the screen needs to have a hole diameter that is at least larger in the front-rear direction than the diameter of the lifting / lowering cord, This was one of the factors that caused more light leakage.

SUMMARY OF THE INVENTION An object of the present invention is to provide a pleated screen that maintains the crease interval of the screen at a preset interval, prevents the leakage of outside light into the room, and simplifies the assembly work to reduce the manufacturing cost. It is in.

A pleated screen that solves the above problems includes a head box, a screen that is suspended from the head box and can be folded in a zigzag manner, and a lifting cord that is suspended from the head box and lifts the screen. In a pleated screen comprising a pitch holding cord that is suspended from the head box and holds the crease spacing of the screen, the lifting cord and the pitch holding cord are suspended and supported separately at the front and rear of the screen, The pitch holding cord is provided with a plurality of holding portions, the holding portion passes through the screen, and the lifting cord is inserted into the holding portion.

In the pleated screen, it is preferable that the holding portion is respectively inserted into a plurality of insertion holes provided in the screen.

In the pleated screen, the insertion hole is preferably provided at a fold of the screen.

In the pleated screen, the insertion hole is preferably provided so as not to be in contact with the lifting cord.

In the pleated screen, the insertion hole is preferably provided in a fold on the pitch holding cord side of the screen.

In the pleated screen, the pitch holding cord is formed by a braided cord formed by knitting yarn, and the holding portion is formed by exposing the monofilament yarn knitted in the pitch holding cord in a ring shape at regular intervals. Is preferred.

In the pleated screen, the yarns constituting the holding portions are respectively led out from a pair of positions spaced apart from the pitch holding cords in the vertical direction, and the lifting cords are arranged in the left-right direction with respect to the plurality of holding portions. It is preferable to insert them alternately.

The pleated screen further includes a bottom rail attached to a lower end of the screen, the elevating cord including a plurality of elevating cords suspended and supported at the front and rear of the screen, and the bottom of the elevating cord at the bottom It is preferable to suspend and support a plurality of lifting cords attached to the rail and supporting the bottom rail in a suspended manner in the front-rear direction of the screen.

In the pleated screen, a cord pair is formed by the pitch holding cord and the elevating cord inserted through the holding portion of the pitch holding cord, and a plurality of cord pairs are juxtaposed in the left-right direction of the screen, and at least one In the cord pair, it is preferable that the pitch holding cord holding portion is inserted through an insertion hole provided in a fold formed by skipping one or more stages of the screen.

In the pleated screen, when the number of the cord pairs is 3 or more, in the cord pairs on both sides in the juxtaposed direction, the pitch holding cord holding portions are inserted into the insertion holes provided in the folds of the entire screen. In the inner cord pair, it is preferable that at least one of the pair of cords is inserted through an insertion hole provided in a fold formed by skipping one or more stages of the pitch holding cord.

In the pleated screen, it is preferable that the pitch holding cord includes a bent portion having a bending strength of a desired bent portion lower than that of other portions.

In the pleated screen, it is preferable to provide movement restriction means for restricting movement of the screen toward the pitch holding code.

In the pleated screen, it is preferable that the movement restricting means is constituted by a locking portion that is provided in a holding portion of the pitch holding cord and locks to restrict the movement of the screen toward the holding cord.

In addition to the above, it is also preferable that the screen is formed of a single cloth that can be bent in a zigzag shape.

It is also preferable that the pitch holding cord holding portion is annular.

Further, regarding making the insertion hole non-contact with the elevating cord, specifically, the position of the insertion hole, for example, the insertion hole is provided in a fold on the pitch holding cord side of the screen, or the insertion hole Is preferably provided between the folds of the screen, or the lifting / lowering cord is suspended in the horizontal direction of the screen with respect to the insertion hole. Also, some inclusions, for example, the tip of the holding part is twisted between the raising / lowering cord and the insertion hole to form an annular part via an intersection (inclusion), and the raising / lowering code is inserted into the annular part. Or by connecting two endless tip portions of the holding portion together to form an annular portion (inclusion) and inserting the lifting / lowering cord through the annular portion, etc. It is also preferable that

Moreover, it is also preferable to provide the insertion hole in a fold on the lifting cord side of the screen.

It is also preferable to use the pitch holding cord having a wide width corresponding to covering the hole of the screen accompanying the insertion of the holding portion.

In the cord pair, it is also preferable that a plurality of the lifting / lowering cords are inserted through one holding portion.

Further, when the insertion hole is provided in a fold on the lifting cord side of the screen, the lifting and lowering cord is suspended and held before and after the screen as the movement restricting means, and each pitch holding cord has a vertical interval. It is also preferable to increase the vertical distance between the bases of the step holding portions. It is also preferable to provide a joining piece or a lifting / lowering cord guide having an insertion hole for directly or indirectly restricting the movement of the screen in the front / rear direction by the tension of the lifting / lowering cord at another stage. Moreover, it is also preferable that one loop of a holding portion provided in the pitch holding cord is inserted into a plurality of step holes as the movement restricting means.

According to the present invention, it is possible to keep the crease interval of the screen at a preset interval, prevent leakage of outside light into the room, simplify the assembly work, and reduce the manufacturing cost.

(A) is a perspective view which shows the pleat screen of 1st embodiment, (b) is the elements on larger scale of (a). (A) It is a side view which shows a pleat screen, (b) is the elements on larger scale of (a), (c) is the elements on larger scale of (b). It is a bottom view which shows a screen. It is a bottom view which shows 2nd embodiment. It is a bottom view which shows 3rd embodiment. (A) It is a side view which shows 4th embodiment, (b) is the elements on larger scale of (a). It is a perspective view which shows 4th embodiment. It is the schematic which shows the state which folded the pitch holding | maintenance cord of 4th embodiment. It is the schematic which shows the state which folded the screen of 4th embodiment. (A) is a side view which shows 5th embodiment, (b) is the elements on larger scale of (a). It is a perspective view which shows 5th embodiment. (A) is a side view which shows 6th embodiment, (b) is the elements on larger scale of (a). It is a perspective view which shows 6th embodiment. (A) is a side view which shows 7th embodiment, (b) is the elements on larger scale of (a). It is a side view which shows 7th embodiment. (A) is a side view which shows 8th embodiment, (b) is the elements on larger scale of (a). It is a side view which shows 9th embodiment. It is a perspective view which shows 9th embodiment. It is a front view which shows 9th embodiment. It is a front view which shows the raising of a fold. (A) is a perspective view which shows 10th embodiment, (b) is the elements on larger scale of (a). (A) is a perspective view which shows 11th embodiment, (b) is the elements on larger scale of (a). (A) is a perspective view which shows 12th embodiment, (b) is the elements on larger scale of (a). It is a side view which shows 13th embodiment, (a) is a figure of only a pitch holding | maintenance cord, (b) is a figure which shows an assembly | attachment state. It is an enlarged view which shows 14th embodiment. A double pleated screen is shown, (a) is a side view showing the fifteenth embodiment, and (b) is a side view showing the sixteenth embodiment. It is a perspective view which shows 17th embodiment. It is a perspective view which shows 18th embodiment. (A) is a side view of the same form, (b) is a side view showing a comparative example, and (c) and (d) are side views showing a modification. (A) is a perspective view which shows 19th embodiment, (b) is the elements on larger scale of (a). (A)-(c) is a side view which shows the modification of a movement control means. (A)-(c) is a perspective view which shows the modification of a movement control means. (A) is a perspective view which shows 20th embodiment, (b) is the elements on larger scale of (a).

(First embodiment)
Hereinafter, a first embodiment of a pleated screen will be described with reference to the drawings. The pleated screen shown in FIG. 1A is a bottom rail in which a head box 1 and a screen 2 that is suspended and supported from the head box 1 and can be bent in a zigzag shape in the vertical direction are attached to the lower end of the screen 2. 3. The screen 2 is formed by bending a piece of dough into a zigzag shape.

As shown in FIG. 2 (a), a winding shaft 4 is rotatably supported in the head box 1 based on an operation of an operating device (not shown). The winding shaft 4 is provided in the vicinity of both ends in the longitudinal direction of the head box 1 and operates in conjunction with the operation of the operating device.

As shown in FIG. 1 (a), the lifting / lowering cords 5 are respectively suspended from the vicinity of both ends in the longitudinal direction of the head box 1, and the upper ends of the two lifting / lowering cords 5 are attached to the winding shaft 4 and operated. The winding shaft 4 can be wound or rewound by operating the apparatus.

The lifting / lowering cord 5 is suspended from the outdoor side of the screen 2, and the bottom rail 3 is attached to the lower end of the lifting / lowering cord 5. When the lifting / lowering cord 5 is wound around the winding shaft 4, the bottom rail 3 is pulled up and the screen 2 is folded upward. When the lifting / lowering cord 5 is unwound from the winding shaft 4, the bottom rail 3 is The screen 2 is lowered and stretched downward.

A pitch holding cord 6 is suspended from the head box 1 to the indoor side of the screen 2 in front of the hanging position of the lifting / lowering cord 5. An upper end of the pitch holding cord 6 is attached to the head box 1, and a lower end of the pitch holding cord 6 is attached to the bottom rail 3. The pitch holding cord 6 is set to a length that is substantially tensioned when the lifting / lowering cord 5 is rewound from the winding shaft 4 and the bottom rail 3 is lowered to the lower limit.

The pitch holding cord 6 is provided with a plurality of annular holding portions 7 at equal intervals. The pitch holding cord 6 is a cord in which warp yarns are formed by knitting yarn with a knitting machine, and a yarn (monofilament yarn) is knitted to form the holding portion 7 in the warp yarn. And the thread | yarn is exposed cyclically | annularly for every fixed space | interval, and the holding | maintenance part 7 is formed.

The screen 2 has insertion holes (cuts) 8 through which the holding portion 7 can be inserted in every other fold 9 among the folds close to the elevating cord 5, that is, the folds convex toward the outdoor side. Is formed. The insertion hole 8 is a narrow notch that can be inserted through the holding portion 7 formed of a thin thread.

2 (a) to 2 (c) and FIG. 3, the holding part 7 is inserted into the insertion hole 8 from the indoor side, and the lifting / lowering cord 5 is inserted into the holding part 7 exposed to the outside of the outdoor side. Has been. The pitch holding cord 6 and the elevating cord 5 inserted through the holding portion 7 of the pitch holding cord 6 form a cord pair. Two cord pairs are juxtaposed along the left-right direction of the screen 2.

With such a configuration, when the bottom rail 3 is lowered to the lower limit as shown in FIGS. 2 (a) to 2 (c), the tip of each holding portion 7 is engaged with the lifting / lowering cord 5, The holding unit 7 is in a state of supporting each fold 9 from below, and the folds of the screen 2 are held at equal intervals. Further, depending on the material of the fabric of the screen 2, a portion extending obliquely upward from each fold 9 of the screen 2 is supported by the holding portion 7.

That is, the interval between the holding portions 7 is set to an interval corresponding to every other fold interval when the screen 2 is extended to the lower limit, and the length of the holding portion 7 is approximately equal to the folding width of the screen 2. The length is set with the diameter added.

Next, the operation of the pleated screen configured as described above will be described.

As shown in FIGS. 1A and 2A, when the lifting cord 5 is rewound from the winding shaft 4 by operating the operating device and the bottom rail 3 is lowered to the lower limit, the screen 2 is stretched downward. It is. At this time, the bottom rail 3 is supported by the lifting / lowering cord 5 and the pitch holding cord 6 at both front and rear edges thereof, and is suspended and supported so that the upper surface of the bottom rail 3 is substantially horizontal.

Further, the fold lines 9 that protrude outward from the screen 2 are held at equal intervals in the vertical direction by the holding portion 7 of the pitch holding cord 6. As a result, the folds of the screen 2 are held so as to be substantially equally spaced.

From this state, when the lifting cord 5 is wound up by the winding shaft 4, the bottom rail 3 is pulled up and the screen 2 is folded upward.

The following effects can be obtained with the pleated screen configured as described above.

(1) Since the lifting / lowering cord 5 that lifts and lowers the screen 2 does not pass through the screen 2, it is not necessary to provide an insertion hole for inserting the lifting / lowering cord 5 in the screen 2. Therefore, outside light does not leak into the room through the insertion hole for inserting the lifting / lowering cord 5.

(2) Since the holding section 7 extending from the pitch holding cord 6 and through which the lifting / lowering cord 5 is inserted can support the folds 9 every other fold 9 of the screen 2 or the screen 2 connected to the fold 9 above the holding section 7. When the screen 2 is lowered, the crease interval can be kept substantially constant.

(3) Since the insertion hole 8 through which the holding portion 7 is inserted is a narrow notch that allows the holding portion 7 formed of a thin thread to be inserted (exaggerated in the drawing), from the insertion hole 8 Light leakage can be reduced.

(4) Since the screen 2 is formed of one piece of cloth that can be folded in a zigzag shape, the bonding step of the cloth pieces as disclosed in Patent Document 1 is not required. Therefore, the manufacturing cost can be suppressed.

(5) The holding portion 7 of the pitch holding cord 6 formed by the knitting machine is inserted into each insertion hole 8 of the screen 2, and the lifting cord 5 is inserted into the holding portion 7 so as to be supported suspended from the head box 1. The screen part can be easily assembled.

(6) Since the lifting / lowering cord 5 is inserted into the holding portion 7 inserted through the insertion hole 8 of the screen 2 and the lifting / lowering cord 5 is always strained, lateral displacement of the screen 2 in the left-right direction is prevented, The holding unit 7 and the pitch holding cord 6 do not shift laterally.

(7) Since the lifting / lowering cord 5 is inserted only into the holding portion 7 inserted into every other fold 9, the man-hours for inserting the lifting / lowering cord 5 can be greatly reduced.

(Second embodiment)
FIG. 4 shows a second embodiment. In the first embodiment, the two lifting / lowering cords 5 are suspended and supported on the outside of the screen 2. In the second embodiment, one of the two lifting cords 5 is suspended and supported on the indoor side of the screen 2, and the other is suspended on the outdoor side of the screen 2. That is, the two lifting / lowering cords 5 and the pitch holding cords 6 suspended from the vicinity of both ends of the head box 1 are suspended and supported in the front / rear direction of the screen 2 so that the lifting / lowering cords 5 and the pitch holding cords 6 Attach the bottom rail 3 to the lower end.

The head box 1 is provided with a winding device that winds each lifting cord 5 at the same time or rewinds it simultaneously by operating the operating device. Other configurations are the same as those of the first embodiment.

In addition to the effects obtained in the first embodiment, the following effects can be obtained with the pleated screen configured as described above.

(1) When the screen 2 is pulled up, the bottom rail 3 is folded upward while the screen 2 is stacked on the bottom rail 3 while maintaining the state in which the bottom rail 3 is horizontal in the front-rear direction as shown in FIG. Can do.

(Third embodiment)
FIG. 5 shows a third embodiment. This embodiment shows a case in which three elevating cords 5 and pitch holding cords 6 are suspended and supported in the vicinity of the longitudinal direction both ends and at the center of the head box 1.

Also in this case, the lifting / lowering cords 5 and the pitch holding cords 6 adjacent to each other in the longitudinal direction of the head box 1 are suspended and supported in a staggered manner in the front / rear direction of the screen 2. Attach the bottom rail 3 to the lower end.

With this configuration, the same effect as that of the second embodiment can be obtained.

(Fourth embodiment)
FIG. 6A to FIG. 9 show a fourth embodiment. As shown in FIGS. 6 (a), 6 (b), and 7, the two yarn lead-out positions P1 and P2 of each holding portion 7 formed by being knitted into the pitch holding cord 6 are pitch holding cords. 6 is located at a certain distance t in the vertical direction.

The holding unit 7 is inserted into an insertion hole 11 provided in a fold on the outdoor side of the screen 2, and the lifting / lowering cord 5 is inserted into the holding unit 7 on the outdoor side of the screen 2. The insertion hole 11 is formed with a small diameter that allows the two threads of the holding portion 7 to be inserted.

As shown in FIG. 7, the lifting / lowering cords 5 are alternately inserted into the holding unit 7 in the left-right direction. Other configurations are the same as those in the first embodiment.

The elevating cord 5 is always tensioned by the weight of the bottom rail 3 or the bottom rail 3 and the screen 2. Then, a force is applied to the holding portion 7 through which the lifting / lowering cord 5 is inserted so as to position the lead-out positions P1 and P2 in the horizontal direction.

As shown in FIG. 8, when the screen 2 is folded upward in this state, in the pitch holding cord 6 folded on the indoor side of the screen 2, the lead-out positions P1 and P2 of the holding portions 7 adjacent in the vertical direction are It will be in a state of alternating in the left-right direction. This is because the lifting / lowering cords 5 are alternately inserted in the left-right direction with respect to the holding portion 7.

As a result, as shown in FIG. 9, when the screen 2 is folded upward, the pitch holding cord 6 tends to be regularly folded on the indoor side of the screen 2. If the pitch holding cord 6 is irregularly folded on the indoor side of the screen 2, the aesthetic appearance of the pleated screen is impaired. In this embodiment, however, the aesthetic deterioration can be prevented.

(Fifth embodiment)
FIG. 10A, FIG. 10B and FIG. 11 show a fifth embodiment. In this embodiment, the tip of the holding portion 7 inserted through the insertion hole 11 of the screen 2 is twisted to form a small annular portion 12 via the intersection portion 13, and the lifting / lowering cord 5 is inserted into the annular portion 12. is there. That is, the surrounding portion of the insertion hole 11 is provided so as not to be in contact with the lifting / lowering cord 5 by the intersection 13 (inclusion between the insertion hole 11 and the lifting / lowering cord 5). Other configurations are the same as those of the fourth embodiment.

In such a configuration, since the intersecting portion 13 is interposed between the lifting / lowering cord 5 inserted through the annular portion 12 and the insertion hole 11 of the screen 2, the surroundings of the lifting / lowering cord 5 and the insertion hole 11 during the lifting / lowering operation of the screen 2 are performed. It becomes difficult to rub against the part.

Therefore, even if the lifting / lowering operation of the screen 2 is repeated, it is possible to prevent the crease around the insertion hole 11 from being worn. Further, since the friction between the lifting / lowering cord 5 and the surrounding portion of the insertion hole 11 can be prevented, the fold 9 near the insertion hole 11 is lifted by the lifting / lowering cord 5 that moves upward when the screen 2 is lifted (fold 9). (See FIG. 20), which is curved so as to wave upward.

(Sixth embodiment)
FIG. 12A, FIG. 12B and FIG. 13 show a sixth embodiment. In this embodiment, an annular portion 14 is formed by entwining two endless tip portions of the holding portion 7 inserted through the insertion hole 11 of the screen 2 together, and the lifting / lowering cord 5 is inserted into the annular portion 14. Yes. That is, due to the presence of the intersecting portion 15 as an inclusion between the insertion hole 11 and the lifting / lowering cord 5, the insertion hole 11 portion is provided so as not to contact the lifting / lowering cord 5. Other configurations are the same as those of the fourth embodiment.

In such a configuration, since the intersecting portion 15 is interposed between the lifting / lowering cord 5 inserted into the annular portion 14 and the insertion hole 11 of the screen 2, when the screen 2 is lifted / lowered, It becomes difficult to rub against the part.

Therefore, even if the lifting / lowering operation of the screen 2 is repeated, it is possible to prevent the crease around the insertion hole 11 from being worn. Further, since the friction between the lifting / lowering cord 5 and the surrounding portion of the insertion hole 11 can be prevented, it is possible to prevent the folds near the insertion hole 11 from being lifted by the lifting / lowering cord 5 that moves upward when the screen 2 is pulled up. Can do.

In addition, instead of forming the intersecting

portions

13 and 15 in the holding portion 7 as in the fifth embodiment and the sixth embodiment, the inclusion between the insertion hole 11 provided in the same position and the lifting / lowering cord 5 is provided. As another example, another member may be attached, such as a caulking member larger than the insertion hole 11 provided in the holding portion 7 or two tape members bonded together.

(Seventh embodiment)
FIG. 14A, FIG. 14B, and FIG. 15 show a seventh embodiment. In this embodiment, the holding portion 7 of the pitch holding cord 6 is inserted into the intermediate portion between the folds of the screen 2. That is, the peripheral portion of the insertion hole 16 is provided so as not to contact the lifting cord 5. Other configurations are the same as those of the fourth embodiment.

By adopting such a configuration, the lifting / lowering cord 5 and the insertion hole 16 through which the holding portion 7 is inserted do not rub during the lifting / lowering operation of the screen 2. Therefore, wear of the screen 2 in the vicinity of the insertion hole 16 can be prevented. Further, when the screen 2 is pulled up, it is possible to prevent the folds near the insertion hole 16 from being lifted by the lifting cord 5 that moves upward.

(Eighth embodiment)
FIG. 16A and FIG. 16B show an eighth embodiment. In this embodiment, the holding portion 7 of the pitch holding cord 6 is inserted through an insertion hole 18 provided in a fold line 17 that protrudes toward the indoor side of the screen 2. That is, the peripheral portion of the insertion hole 18 is provided so as not to contact the lifting cord 5. Other configurations are the same as those of the fourth embodiment. The arrangement of the pitch holding cord 6 and the lifting / lowering cord 5 inside and outside the room may be reversed.

By adopting such a configuration, the lifting / lowering cord 5 and the insertion hole 18 through which the holding portion 7 is inserted are not rubbed during the lifting / lowering operation of the screen 2. Therefore, wear of the screen 2 in the vicinity of the insertion hole 18 can be prevented. Further, when the screen 2 is pulled up, it is possible to prevent the folds near the insertion hole 18 from being lifted by the lifting cord 5 that moves upward.

Further, when the screen 2 is lowered, the interval L1 between the position of the insertion hole 18 and the pitch holding cord 6 is smaller than the interval L2 between the insertion hole 16 and the pitch holding cord 6 of the seventh embodiment.

In the seventh embodiment, since the interval L2 between the insertion hole 16 and the pitch holding cord 6 is large, the insertion of the specific crease 17 of the screen 2 when a pulling force in the direction of extending the fold 17 in the vertical direction is applied. The position of the hole 16 moves on the holding portion 7 in the direction of arrow A shown in FIG.

Then, as shown in FIG. 15, the position of the crease 17 is greatly moved obliquely upward toward the pitch holding cord 6, and the sandwiching angle α of the

creases

9 and 17 is increased. Then, as indicated by the chain line in FIG. 15, the folding direction of the outdoor fold 9 may be reversed.

In this embodiment, since the distance L1 between the position of the insertion hole 18 and the pitch holding cord 6 is small, even if the position of the insertion hole 18 tries to move obliquely upward toward the pitch holding cord 6, the moving distance is limited. The

Therefore, the change in the folding angle of the

fold lines

9 and 17 of the screen 2 can be suppressed and the folding direction can be prevented from being reversed.

In addition, since the insertion hole 18 is provided in the crease 17 that protrudes toward the pitch holding cord 6, when the screen 2 is folded upward, it is laminated and folded compared to the case where the insertion hole is provided on the lifting cord 5 side. It is difficult for the pitch holding cord 6 to be loosened between the folds of the screen 2 to be folded and zigzag-folded.

Therefore, as shown in FIG. 9, since the pitch holding cord 6 can be exposed in a regularly folded state, it is possible to improve the appearance when the screen 2 is folded upward. Furthermore, when it is inserted as in the fourth embodiment, a synergistic effect is exhibited.

(Ninth embodiment)
17 to 19 show a ninth embodiment. In this embodiment, the lifting / lowering cord 5 inserted through the endless edge of the holding portion 7 inserted through the insertion hole 11 is shifted in the horizontal direction of the screen 2 with respect to the insertion hole 11 and hangs down. That is, the peripheral portion of the insertion hole 11 is provided so as not to contact the lifting cord 5. Other configurations are the same as those of the fourth embodiment.

With such a configuration, friction between the lifting / lowering cord 5 and the surrounding portion of the insertion hole 11 can be prevented, so that wear of the crease portion around the insertion hole 11 can be prevented. Further, since the friction between the lifting / lowering cord 5 and the surrounding portion of the insertion hole 11 can be prevented, it is possible to prevent the folds near the insertion hole 11 from being lifted by the lifting / lowering cord 5 that moves upward when the screen 2 is pulled up. Can do.

The above embodiment may be implemented in the following manner.

· The folds of the screen may be supported every 2 or 3 steps by the holding part.

・ All creases may be supported by the holding part. With such a configuration, meandering of the pitch holding cord when the screen is folded can be suppressed.

· The screen may be provided with an unfolded portion at the top, that is, a portion that does not fold in a zigzag shape.

In the following, tenth to twentieth embodiments are shown as other embodiments described above.

(Tenth embodiment)
FIG. 21A and FIG. 21B show a tenth embodiment. This embodiment has a configuration in which three lifting cords 5 and three pitch holding cords 6 are suspended and supported. That is, three code pairs are arranged side by side along the left-right direction of the screen 2. The pitch holding cord 6 is disposed on the indoor side on both ends in the longitudinal direction of the head box 1, the lifting cord 5 is disposed on the outdoor side, the lifting cord 5 is disposed on the indoor side in the central portion, and the pitch holding cord 6 is disposed on the outdoor side. ing. At both ends of the head box 1, the holding portions 7 of the pitch holding cord 6 are inserted into the insertion holes 18 in all the stages of the folds 17 on the indoor side of the screen 2. The holding portions 7 of the pitch holding cord 6 are inserted into the insertion holes 8 every other stage 9. The insertion holes 8 and 18 of this embodiment have a minimum diameter that allows the holding portion 7 of the pitch holding cord 6 to be inserted, and the holding portion 7 converges from the pitch holding cord 6 toward the insertion hole 8. The small

diameter insertion holes

8 and 18 are inserted.

In this embodiment having such a configuration, the holes of the screen 2 are made

small insertion holes

8 and 18 that allow the holding portions 7 of the pitch holding cord 6 to pass therethrough, so that light leakage through the insertion holes 8 and 18 is suppressed as much as possible. It is done. In addition to this, in the pitch holding cord 6 located in the center portion of the head box 1, a configuration in which the fold 9 through which the holding portion 7 is inserted is skipped, that is, the number of the insertion holes 8 can be reduced. Even in the case of many configurations as in the present embodiment, light leakage through the insertion hole 8 can be suppressed as much as possible, and the light shielding property can be improved.

In addition, by adopting the above-described configuration of skipping, the number of holding portions 7 of the pitch holding cord 6 can be omitted, and the trouble of inserting through the insertion hole 8 can be reduced. Although the fold line 9 through which the holding portion 7 of the pitch holding cord 6 is inserted is skipped by one step, it may be skipped by two or more steps. Further, the holding portion 7 (fold 9) of the pitch holding cord 6 at the center of the head box 1 is skipped, but the holding portion 7 (fold 17) of the pitch holding cord 6 on both ends of the head box 1 is skipped. It is good also as a structure. Moreover, it is good also as a structure which skips both.

In addition, there is a concern that the zigzag shape of the screen 2 is likely to collapse due to the flying configuration described above. However, the holding portions 7 of the pitch holding cords 6 located on both end sides of the head box 1 have folds in all stages. Since it is configured to be inserted through the 17 insertion holes 18 (no skipping), the zigzag shape is not easily broken in the entire screen 2, and the regular zigzag shape can be maintained as much as possible.

Even if the holding portions 7 of the pitch holding cords 6 are inserted through the insertion holes 18 in all stages of the pitch holding cords 6 suspended at both ends of the head box 1 as described above, the insertions provided on the conventional screen are performed. The effect of greatly reducing the man-hours for inserting the lifting / lowering cord 5 is the same as that of the structure in which the holes and the pitch holding cord are passed through.

Further, since the lifting / lowering cord 5 is arranged on the indoor side in the central portion, the pitch holding cords 6 are not exposed when viewed from the indoor side, and the pitch holding cords 6 at both ends are exposed to the indoor side, but are inserted in all stages. By inserting the holding portion 7 of the pitch holding cord 6 into the hole 18, the bending width of the warp yarn of the pitch holding cord 6 at the time of folding becomes a short width that is about half of the apex interval of the pleat mountain of the screen 2, so that it is not noticeable. A clean aesthetic can be obtained even when folded.

Further, in the case of the above-described configuration of flying, it is preferable to set the folding angle of the screen 2 to 60 ° to 90 °. In the case of a narrow screen 2 such as a folding width of 15 mm, for example, the folding angle of the screen 2 is set to 60 ° with the screen 2 lowered to the lower limit. If the bending angle of is set to be small, the screen 2 is easily folded properly.

(Eleventh embodiment)
FIG. 22A and FIG. 22B show the eleventh embodiment. This embodiment has a configuration in which four lifting cords 5 and four pitch holding cords 6 are suspended and supported. That is, four code pairs are juxtaposed along the left-right direction of the screen 2. On both ends of the head box 1, a pitch holding cord 6 is arranged on the indoor side, and an elevating cord 5 is arranged on the outdoor side. In two central portions, the elevating cord 5 is arranged on the indoor side, and a pitch holding cord 6 is arranged on the outdoor side. Has been. The holding portions 7 of the pitch holding cords 6 on both ends of the head box 1 are inserted into the insertion holes 18 of the folds 17 on the entire indoor side, and the holding portions 7 of the pitch holding cords 6 at the two central portions are the chambers. The outer folds 9 are inserted through the insertion holes 8 of every other step.

Also in this embodiment having such a configuration, the same effect as that of the tenth embodiment can be obtained.

(Twelfth embodiment)
FIG. 23A and FIG. 23B show a twelfth embodiment. This embodiment has a configuration in which five lifting cords 5 and five pitch holding cords 6 are suspended and supported. That is, five code pairs are juxtaposed along the left-right direction of the screen 2. On both ends of the head box 1, a pitch holding cord 6 is disposed on the indoor side, and an elevating cord 5 is disposed on the outdoor side. 6 is arranged. Further, in the central portion on the inner side, a pitch holding cord 6 is disposed on the indoor side, and an elevating cord 5 is disposed on the outdoor side. The holding portions 7 of the pitch holding cords 6 at both end portions and the central portion of the head box 1 are inserted through the insertion holes 18 of the folds 17 at all the indoor sides, and two portions between the both end portions and the central portion. The holding portion 7 of the pitch holding cord 6 is inserted into the insertion hole 8 of the fold 9 on the outer side of every other step.

It should be noted that the same pattern may be repeated for an odd number of 7 or more.

Further, when the number of the lifting / lowering cords 5 and the pitch holding cords 6 is six or more, for example, when the six lifting / lowering cords 5 and the pitch holding cords 6 are suspended and supported, both ends of the head box 1 are provided. Then, the pitch holding cord 6 is disposed on the indoor side, and the elevating cord 5 is disposed on the outdoor side. At two locations on the inner side, the lifting / lowering cord 5 is disposed on the indoor side, and the pitch holding cord 6 is disposed on the outdoor side. Further, at two further locations in the center on the inner side, the pitch holding cord 6 is disposed again on the indoor side, and the elevating cord 5 is disposed on the outdoor side.

For example, in the case where eight lifting cords 5 and pitch holding cords 6 are supported in a suspended manner, the pitch holding cords 6 are disposed on the indoor side and the lifting cords 5 are disposed on the outdoor side at both ends of the head box 1. Is done. At two locations on the inner side, the lifting / lowering cord 5 is disposed on the indoor side, and the pitch holding cord 6 is disposed on the outdoor side. At two locations one inner side than this, the pitch holding cord 6 is again arranged on the indoor side, and the elevating cord 5 is arranged on the outdoor side. Further, at two further locations in the center on the inner side, the lifting / lowering cord 5 is disposed again on the indoor side, and the pitch holding cord 6 is disposed on the outdoor side.

(Thirteenth embodiment)
FIG. 24A and FIG. 24B show a thirteenth embodiment. In this embodiment, for example, a portion on the distal end side of the holding portion 7 that is separated from the warp yarn of the pitch holding cord 6, that is, a portion on the lifting cord 5 side so that the holding portion 7 warps the pitch holding cord 6 in the longitudinal direction of the warp yarn. Is shaped to warp upward.

For example, in the case where the pitch holding cord 6 is disposed on the outdoor side and the lifting / lowering cord 5 is disposed on the indoor side, the upwardly curved holding portion 7 is inserted into the insertion hole 8 of the fold 9 on the outdoor side of the screen 2. Becomes easy to be supported in a state of being close to the pitch holding cord 6 side. Therefore, when the screen 2 is raised, the friction between the crease 17 of the screen 2 and the lifting cord 5 on the indoor side is reduced, and the screen 2 is prevented from being lifted.

(14th embodiment)
FIG. 25 shows a fourteenth embodiment. In this embodiment, a bent portion 20 is formed at an intermediate portion (desired bent portion) between the holding portions 7 of the pitch holding cord 6. The bending part 20 is configured to have a lower bending strength than other parts. For example, as shown in FIG. 25, the pitch holding cord 6 includes a warp yarn 21 of a knitting yarn and a weft yarn 22 knitted in a meandering manner with respect to the warp yarn 21. Thus, the bending strength is low. When the pitch holding cord 6 is folded together with the folding of the screen 2, the bending portion 20 positively folds the pitch holding cord 6 so that the pitch holding cord 6 is easily folded regularly as shown in FIG. .

In the present embodiment having such a configuration, the pitch holding cord 6 can be regularly folded, and deterioration of the aesthetics of the pleated screen on the indoor side can be prevented. Although it is effective in all the embodiments, a synergistic effect is exhibited particularly in combination with the fourth and eighth embodiments.

Although the pitch holding cord 6 itself is partially knitted in the desired bent portion to reduce its bending strength, other configurations such as partial cutting may be used.

(Fifteenth embodiment)
FIG. 26A shows a fifteenth embodiment. This embodiment shows a double pleated screen.

The double pleated screen suspends and supports, for example, two types of

screens

2a and 2b having a zigzag shape so as to overlap in the front-rear direction from the common head box 1, and the bottom ends of the

screens

2a and 2b are common bottom rails. 3 is attached. The

screens

2a and 2b are arranged symmetrically with respect to the center line viewed from the side, that is, the outdoor fold 9 of the indoor screen 2a and the indoor fold 17 of the outdoor screen 2b face each other. Is arranged. A common lifting / lowering cord 5 is suspended from the winding shaft 4 between the

screens

2 a and 2 b, and the lower end of the cord 5 is attached to the bottom rail 3.

A pitch holding cord 6 is suspended from the head box 1 on the indoor side of the indoor screen 2a and on the outdoor side of the outdoor screen 2b. The holding part 7 of the indoor pitch holding cord 6 is inserted into the insertion hole 18 of the indoor side fold 17 of the indoor screen 2a in almost all stages other than the lowest stage, and is common to the annular holding part 7 The lifting / lowering cord 5 is inserted, and the indoor and

outdoor screens

2a and 2b are integrally held. Similarly, the holding part 7 of the outdoor pitch holding cord 6 is inserted into the insertion hole 8 of the outdoor fold 9 of the outdoor screen 2b in almost all stages other than the lowest stage, and this holding part forming an annular shape. 7 is inserted through a common lifting cord 5.

In this embodiment having such a configuration, the indoor and

outdoor screens

2a and 2b can be lifted and lowered simultaneously. Further, since the holes of the

individual screens

2a and 2b are made

small insertion holes

8 and 18 that allow the holding portions 7 of the pitch holding cord 6 to pass therethrough, light leakage through the insertion holes 8 and 18 can be suppressed as much as possible. Since the

screens

2a and 2b are doubled, light leakage through the insertion holes 8 and 18 is further suppressed, and the light shielding property is higher. Further, since an air layer is formed between the

screens

2a and 2b, an improvement in heat shielding properties can be expected.

Incidentally, the

folds

9 and 17 through which the holding portions 7 of the pitch holding cord 6 are inserted may be skipped by one or more stages on the indoor screen 2a and the outdoor screen 2b. Further, in the case of such a configuration to fly, if the insertion holes 8 and 18 (positions through which the holding portion 7 is inserted) between the indoor screen 2a and the outdoor screen 2b are shifted in the vertical direction, the light shielding property is further improved. Can be increased.

(Sixteenth embodiment)
FIG. 26B shows a sixteenth embodiment. The winding

shafts

4a and 4b, the lifting / lowering cord 5, and the bottom rails 3a and 3b are provided for each of the

screens

2a and 2b, and the

screens

2a and 2b can be lifted and lowered independently.

In the present embodiment having such a configuration, the

screens

2a and 2b can be moved up and down independently, and one of the

screens

2a and 2b is folded by arranging the lifting code 5 between the

screens

2a and 2b. At that time, the mountain (fold) on one side does not enter the valley (fold) on the other side, and a smooth raising / lowering operation is possible. Moreover, since it is the

double screens

2a and 2b, it is excellent also in light-shielding property and heat-shielding property similarly to 15th embodiment.

(Seventeenth embodiment)
FIG. 27 shows an seventeenth embodiment. In this embodiment, for example, a tape-like pitch holding cord 6a which is wider than the string-like pitch holding cord 6 used in each of the above embodiments is used.

In this embodiment having such a configuration, the insertion hole 18 of the fold line 17 on the indoor side, for example, of the screen 2 is closed by the wide pitch holding cord 6a itself having the width W in order to insert the holding unit 7, thereby shielding the light. Excellent in properties.

(Eighteenth embodiment)
28 and 29 (a) show an eighteenth embodiment. In this embodiment, a locking portion 10 is provided on the warp yarn side of the pitch holding cord 6 from the screen 2 of the holding portion 7 of the pitch holding cord 6 so as to restrict the movement of the pitch holding cord 6 of the screen 2 to the warp yarn side. Yes. For example, the engaging portion 10 is harder than the warp yarn of the pitch holding cord 6, has a width w 1 slightly narrower than the warp yarn, a width w 2 sufficiently larger than the insertion hole 8, and a thickness d slightly larger than the holding portion 7. The holding cord 6 is configured to be fixed in advance at a predetermined position on the tip side of the holding portion 7. Even when the holding portion 7 is a monofilament yarn, it can be fixed by heating by using the locking portion 10 as a fused yarn. For example, when the pitch holding cord 6 is disposed on the indoor side of the screen 2 and the lifting / lowering cord 5 is disposed on the outdoor side, the holding portion 7 is provided from the indoor side to the outdoor side in the insertion hole 8 of the fold 9 on the outdoor side of the screen 2. , And the lifting / lowering cord 5 is inserted into the holding portion 7 after the insertion. The locking part 10 of the holding part 7 can be locked with the indoor peripheral edge of the insertion hole 8 of the screen 2.

Here, for example, referring to FIG. 6, while the screen 2 is being lifted, the lifting / lowering cord 5 that lifts the bottom rail 3 at the lower end of the screen 2 is always in tension, but the pitch-holding cord 6 is from the vicinity where it is folded. Since it is no longer in a tension state, the screen 2 easily escapes from the lifting / lowering cord 5 toward the pitch holding cord 6. In particular, this is likely to occur when the screen 2 is lowered in the zigzag shape and the flexibility of the screen 2 decreases due to the influence of long-term solar radiation, and the folding resistance of the screen 2 increases. FIG. 29 (b) shows a comparative example using the screen 2 with reduced flexibility without the locking portion 10, but when part of the screen 2 largely escapes as indicated by the arrow in the figure, the screen 2 is subsequently lifted. There is a risk of hindering the folding operation.

Based on this, in this embodiment, the movement of the screen 2 is restricted by the lifting / lowering cord 5 and the locking portion 10 of the holding portion 7, and in particular, if the screen 2 tries to escape from the lifting / lowering cord 5 toward the pitch holding cord 6. Since the movement is restricted by the stopper 10, the folding associated with the lifting of the screen 2 can always be performed satisfactorily.

In addition, although the latching | locking part 10 was comprised with the fusion | melting thread | yarn, you may respond by the structure of other than this. For example, a thin plate caulking member may be attached to the holding portion 7, an adhesive tape may be attached to the holding portion 7, and a bent portion protruding in the left-right direction may be provided on the holding portion 7 itself. Further, the indoor side configuration and the outdoor side configuration may be arranged in reverse.

The locking portion 10 may be fixed to the holding portion 7 after the holding portion 7 is inserted into the insertion hole 8 and the lifting / lowering cord 5 is inserted, for example, without the locking portion 10 being fixed to the holding portion 7 in advance. .

Further, as shown in FIG. 29 (c), the movement of the screen 2 can be restricted by adopting a mode in which the base of the holding portion 7 is widened in the vertical direction so as to be equivalent to the valley shape of the screen 2. . As the movement restricting means (movement restricting portion) in this example, as shown in FIG. 29 (c), an intersecting portion 19 that intersects one end and the other end of the holding portions 7 of each adjacent stage is provided. As shown in (d), it can be realized by increasing the vertical distance x2 of the pair of roots of the holding portions 7 of each stage from the vertical distance x1 of each stage of the holding section 7 of the pitch holding cord 6. For example, in FIG. 29D, x1 is 5 mm, x2 is 35 mm, the folding angle α1 of the screen 2 is 90 °, and the spread angle α2 of the holding portion 7 of the pitch holding cord 6 is 60 °, which is a narrow angle. Is set.

(Nineteenth embodiment)
FIG. 30A and FIG. 30B show a nineteenth embodiment. In this embodiment, on both sides of the head box 1, the pitch holding cord 6 is disposed on the outdoor side of the screen 2 (or on the indoor side), and the elevating cord 5 is disposed on both the outdoor side and the indoor side of the screen 2. Has been. In addition, each lifting / lowering cord 5 disposed both inside and outside the screen 2 at each end of the head box 1 is configured in a loop shape with one cord.

The elevating cord 5 is, for example, a base end fixed to the outdoor portion of the head box 1, and then passes from the outdoor portion of the bottom rail 3 to the inside through the outdoor portion of the screen 2. Next, the lifting / lowering cord 5 passed through the inside of the bottom rail 3 is led out from the indoor side portion of the bottom rail 3 and passed through the indoor side of the screen 2 from the indoor side portion of the head box 1 to the inside. . Next, the lifting / lowering cord 5 passed through the inside of the head box 1 is suspended from a predetermined portion of the head box 1. As described above, the lifting / lowering cord 5 passing through the inside and outside of the screen 2 is inserted into the holding portion 7 of the pitch holding cord 6, but at that time, only the lifting / lowering cord 5 on the indoor side may be inserted into the holding portion 7. As shown in FIGS. 30A and 30B, the outdoor lifting / lowering cord 5 may also be inserted through the holding portion 7. And the raising / lowering code | cord | chord 5 of each edge part of the head box 1 is stretched similarly similarly, and each front-end | tip is put together.

In this embodiment having such a configuration, since the screen 2 is sandwiched in the front-rear direction by the elevating cords 5 arranged on both sides of the screen 2 on both sides of the head box 1 (movement restricting means), The movement of the screen 2 to the pitch holding cord 6 is restricted by the front and rear elevating cords 5 in the state, and the screen 2 is appropriately folded, which can contribute to improvement in design.

Moreover, since the lifting / lowering cord 5 disposed inside and outside the screen 2 is configured as a single loop, the bottom rail 3 can be maintained horizontally and the operating force can be reduced.

In addition, although the lifting / lowering cords 5 are passed through the bottom rail 3 at both ends of the head box 1 and arranged in pairs in the front / rear direction, separate lifting / lowering cords 5 (movement restricting means, that is, movement restricting portions) are provided at the front and rear. It is also possible to prepare the front and rear elevating cords 5 on the bottom rail 3 so that they can be pulled up simultaneously or wound up simultaneously.

In addition to the movement restricting means shown in the eighteenth and nineteenth embodiments, it may be as shown in FIGS. 31 (a) to 31 (c) and FIGS. 32 (a) to 32 (c).

In FIGS. 31 (a) to 31 (c), the tension of the lifting / lowering cord 5 is directly or indirectly locked with the lifting / lowering cord 5 in the front / rear direction at a stage different from the insertion stage of the holding portion 7 of the pitch holding cord 6. This restricts the movement of the screen 2 back and forth.

Specifically, in FIGS. 31A and 31B, a joining piece 23 is extended from the crease 17 of the screen 2 on the side opposite to the pitch holding cord 6 (the lifting cord 5 side). When the lifting / lowering cord 5 is inserted into the insertion hole 24 of 23, the movement of the screen 2 toward the pitch holding cord 6 is restricted. In FIG. 31A, the joining pieces 23 are provided in every third fold line 17, and the holding part 7 is inserted through the insertion hole 8 of every other fold line 9 on the pitch holding cord 6 side. In FIG. 31B, the joining pieces 23 are provided in every other fold line 17, and the holding portion 7 is inserted through the insertion hole 18 of the fold line 17 of the screen 2 on the lifting / lowering cord 5 side between the adjacent joining pieces 23. .

In FIG. 31 (c), a separate locking member 25 is used, the lifting / lowering cord 5 is inserted into the insertion hole 26 of the locking member 25, and the locking portion 27 of the locking member 25 is connected to the pitch holding cord 6. Is a mode of engaging with the fold 17 portion of the screen 2 on the opposite side (lifting cord 5 side). Even in this configuration, the movement of the screen 2 toward the pitch holding cord 6 can be restricted.

32 (a) to 32 (c), the movement of the screen 2 toward the pitch holding cord 6 is regulated in the manner in which the holding portion 7 of the pitch holding cord 6 is attached to the screen 2 and the lifting / lowering cord 5. Is. This can be realized by inserting one loop of the holding portion 7 provided in the pitch holding cord 6 across a plurality of holes.

Specifically, in FIG. 32 (a), one loop-shaped holding portion 7 having a pair of base end portions separated from the warp of the pitch holding cord 6 by about half the height of the screen 2 is used. Next, the holding portion 7 is led out from the insertion hole 18 of the fold line 17 of the screen 2 on the pitch holding cord 6 side to the side opposite to the pitch holding cord 6 to form the first annular portion 28, and the pitch holding cord 6 one step below is formed. From the insertion hole 8 of the crease 9 of the screen 2 on the opposite side (lifting cord 5 side), the holding portion 7 is led out to the opposite side to the pitch holding cord 6 to form the second annular portion 29. The elevating cord 5 is inserted through the first and second

annular portions

28 and 29, respectively.

In FIG. 32 (b), one loop-shaped holding part 7 having a pair of base end parts separated from the warp yarn of the pitch holding cord 6 by about the height of the adjacent mountain of the screen 2 is used. Next, the holding portion 7 is led out from the insertion hole 18 of the fold line 17 of the screen 2 on the pitch holding cord 6 side to the side opposite to the pitch holding cord 6 to form the first annular portion 28, and the pitch holding cord 6 one step below is formed. The holding portion 7 is also led out from the insertion hole 18 of the fold line 17 of the screen 2 on the side opposite to the pitch holding cord 6 to form a second annular portion 29. The elevating cord 5 is inserted through the first and second

annular portions

28 and 29, respectively.

In FIG. 32 (c), one loop-shaped holding part 7 having a pair of base end parts separated from the warp yarn of the pitch holding cord 6 by about the height of the adjacent valley of the screen 2 is used. Next, the holding portion 7 is led out from the insertion hole 8 of the crease 9 of the screen 2 on the side opposite to the pitch holding cord 6 (the lifting cord 5 side) to the side opposite to the pitch holding cord 6 to form the first annular portion 28. The second annular portion 29 is formed by leading the holding portion 7 to the opposite side of the pitch holding cord 6 from the insertion hole 8 of the fold 9 of the screen 2 on the opposite side to the pitch holding cord 6 one step below. The elevating cord 5 is inserted through the first and second

annular portions

28 and 29, respectively.

32 (a) to 32 (c), the

portions

7a, 7b, 7c of the holding portion 7 located between the insertion holes 18, 8, between the insertion holes 18, 18, and between the insertion holes 8, 8. , Respectively, can restrict the movement of the screen 2 to the pitch holding cord 6 side.

(20th embodiment)
FIG. 33A and FIG. 33B show a twentieth embodiment. In the pair-type pleated screen of this embodiment, for example, two types of

screens

2c and 2d having a zigzag shape are arranged in parallel up and down via an intermediate rail 3c. FIG. 33A shows the front side as the outdoor side.

In the space between the head box 1 and the intermediate rail 3c, and between the intermediate rail 3c and the bottom rail 3, pitch holding cords 6 are disposed on the indoor side on both sides of the head box 1 and on the outdoor side in the center. Has been. In this embodiment, the holding portion 7 of the pitch holding cord 6 is inserted through the insertion holes 8 and 18 of the

fold lines

9 and 17 that are skipped by one step of the

screens

2c and 2d. In addition, you may change the aspect of skip suitably.

The first and second lifting / lowering

cords

5a and 5b disposed on both sides of the head box 1 are inserted into the holding portion 7 from the head box 1 to the intermediate rail 3c, and from the intermediate rail 3c to the bottom rail. Up to 3, only the second lifting / lowering cord 5b is inserted. The same applies to the first and second lifting / lowering

cords

5a and 5b arranged on the indoor side at the center of the head box 1.

Also in this embodiment having such a configuration, the holes of the

screens

2c and 2d are formed as

small insertion holes

8 and 18 that allow the holding portions 7 of the pitch holding cord 6 to pass therethrough, so that light leakage through the

holes

8 and 18 is prevented. It can be provided as a pair-type pleated screen that is suppressed as much as possible and has excellent light shielding properties. Further, even when the operation of pushing up the intermediate rail 3c with the bottom rail 3 is performed, the holding portion 7 can suppress the occurrence of slack in the lifting / lowering cord 5a for the upper screen 2c.

In addition, although each said embodiment was a hanging type pleats screen, you may apply to a bottom-up type pleats screen. For example, it is possible to eliminate the upper screen 2c and the upper pitch holding cord 6 of the twentieth embodiment.

In addition, regarding the fixing of the upper end of the pitch holding cord of each of the above embodiments, it is directly attached to the head box, or is a component that is fixed to the head box (a fabric presser or a long member that fixes the upper end of the screen to the head box) It may be attached to a support supporting the internal driving component, further a cap or the like, and indirectly attached to the head box.

Also, the holding portion of the pitch holding cord may be replaced with a monofilament yarn, and other yarns such as a multifilament yarn and a span yarn may be used.

Moreover, in each said embodiment, the aspect which forms the penetration hole of a screen simultaneously with penetration of the holding | maintenance part of a pitch holding | maintenance cord may be sufficient, and the aspect which forms the penetration hole in a screen beforehand may be sufficient. . Further, the insertion holes may be formed by expanding the gaps between the respective yarns without cutting the warp yarns and the weft yarns constituting the screen. By doing so, even if the lifting / lowering cord contacts the insertion hole as in the first embodiment, for example, fraying of the warp and weft of the screen is reduced and durability is improved.

Further, the pitch holding cord holding portion protrudes from the warp thread by one, and only one portion penetrates the screen (fabric), and a small loop (annular portion) is formed only at the lifting / lowering cord insertion portion. A small loop exists as an inclusion between the insertion hole and the lifting / lowering cord, and wear of the periphery of the insertion hole can be prevented.

In each of the above embodiments, the pitch holding cord holding portion is knitted into the warp yarn in advance, but the warp yarn and the holding portion of the pitch holding cord are formed separately, and the warp yarn and the holding portion are locked later. It is good also as an aspect to do. In this case, only the holding portion may be inserted into the insertion hole of the screen in advance, and the warp yarn and the holding portion may be locked later. The warp yarn and the holding portion can be locked by a method such as molding a locking member capable of locking the holding portion to the warp yarn at predetermined intervals.

Note that the decorative design shown in the drawings is one embodiment of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Head box, 2, 2a, 2b, 2c, 2d ... Screen, 3, 3a, 3b ... Bottom rail, 5, 5a, 5b ... Lifting cord, 6, 6a ... Pitch holding cord, 7 ... Holding part, 8, 11, 16, 18, 24 ... insertion hole, 9, 17 ... crease, 10 ... locking part, 20 ... bending part.

Claims

A head box,
A screen supported by being suspended from the head box and foldable in a zigzag shape in the vertical direction;
A lifting / lowering cord supported by being suspended from the head box and lifting / lowering the screen;
In a pleated screen comprising a pitch holding cord that is supported suspended from the head box and holds the crease interval of the screen,
The elevating cord and the pitch holding cord are suspended and supported on the front and rear sides of the screen, the pitch holding cord is provided with a plurality of holding portions, the holding portion penetrates the screen, and the holding portion has the A pleated screen in which an elevating cord is inserted.
The pleated screen according to claim 1, wherein the holding portion is inserted into a plurality of insertion holes provided in the screen.
The pleated screen according to claim 2, wherein the insertion hole is provided in a fold of the screen.
The pleated screen according to claim 2, wherein the insertion hole is provided so as not to contact the lifting cord.
The pleated screen according to claim 3 or 4, wherein the insertion hole is provided in a fold on the pitch holding cord side of the screen.
The pitch holding cord is formed of a braided cord formed by knitting yarn, and the holding portion is formed by exposing the monofilament yarn knitted in the pitch holding cord in a ring shape at regular intervals. Item 6. The pleated screen according to any one of Items 1 to 5.
The yarns constituting each of the holding portions are respectively derived from a pair of positions spaced apart from the pitch holding cords in the vertical direction, and the lifting cords are alternately inserted into the plurality of holding portions in the left-right direction. The pleated screen according to any one of claims 1 to 6.
Further comprising a bottom rail attached to the lower end of the screen;
The elevating cord includes a plurality of elevating cords suspended and supported on the front and rear of the screen, and the bottom rail is attached to the lower end of the elevating cord,
The pleated screen according to any one of claims 1 to 7, wherein a plurality of lifting / lowering cords for supporting the bottom rail in a suspended manner are suspended and supported in a staggered manner in the front-rear direction of the screen. .
A cord pair is formed by the pitch holding cord and the lifting cord inserted into the holding portion of the pitch holding cord, and a plurality of cord pairs are juxtaposed in the left-right direction of the screen. In at least one cord pair, 4. The pleated screen according to claim 3, wherein the holding portion of the pitch holding cord is inserted into an insertion hole provided in a fold formed by skipping one or more steps of the screen.
In the case where the number of the cord pairs is 3 or more, in the cord pairs on both sides in the juxtaposed direction, the holding portions of the pitch holding cords are inserted through the insertion holes provided in the folds of the entire screen, The pleated screen according to claim 9, wherein at least one of the inner cord pairs is inserted through an insertion hole provided in a fold formed by skipping one or more stages of the screen by holding the pitch holding cord holding portion.
The pleated screen according to any one of claims 1 to 10, wherein the pitch holding cord includes a bent portion having a bending strength of a desired bent portion lower than that of other portions.
The pleated screen according to any one of claims 1 to 11, further comprising movement restriction means for restricting movement of the screen toward the pitch holding cord.
13. The pleat according to claim 12, wherein the movement restricting means is configured by a locking portion that is provided in a holding portion of the pitch holding cord and locks to restrict the movement of the screen toward the holding cord. screen.