JP2014111875A - Pleated screen - Google Patents

Abstract

PROBLEM TO BE SOLVED: To keep the intervals of folding lines formed in a screen on front and rear sides of the screen, and to expand a range of materials used for the screen.SOLUTION: A pleated screen includes: a first pitch holding cord suspended on a screen 2; a second pitch holding cord suspended on the screen 2; a front side holding part provided in the first pitch holding cord, and supporting the screen 2 on the front side thereof by engaging with the front side in the screen; and a rear side holding part provided in the second pitch holding cord, and supporting the screen 2 on the rear side thereof by engaging with the rear side in the screen. The first pitch holding cord and the second pitch holding cord are independent of each other, and the front side holding part and the rear side holding part support mutually different positions in a lateral direction which is a direction in which folding lines 9 formed in the screen extends.

Description

  The present disclosure relates to a pleated screen in which a screen bent in a zigzag shape is suspended from a head box.

  In the pleated screen, a screen that is bent in a zigzag shape along the vertical direction is suspended from the head box, and the amount of light collected is appropriately adjusted by raising and lowering the screen by the operation device. In such a pleated screen, the lifting / lowering cord suspended from the head box is inserted in the approximate center of the screen in the front-rear direction, and a bottom rail is attached to the lower end of the lifting / lowering cord. Then, when the lifting / lowering cord winding device in the head box winds the lifting / lowering cord by operating the operating device, the bottom rail is pulled up and the screen is folded upward. When the lifting / lowering cord winding device sends out the lifting / lowering cord, the bottom rail is lowered and the screen is extended downward (for example, Patent Document 1).

JP-A-11-216062

  By the way, in the pleated screen described in Patent Document 1, one screen is constituted by a plurality of plate members connected in a zigzag shape, and each of the plurality of plate members has an interval between folds on the front side of the plate member and a plate member. The distance between the folds on the rear side is maintained by the warp of the ladder cord. On the other hand, in the configuration in which the screen is supported by the warp yarns of the ladder cord, the weft yarns of the ladder cord must be sandwiched along the left and right directions with respect to both ends of each of the plurality of plate members. Therefore, it is impossible to use a continuous face material like a pleated fabric as a screen, and the material applied to the screen is greatly limited.

  An object of the present disclosure is to provide a pleated screen capable of maintaining a crease interval formed in a screen between a front side of the screen and a rear side of the screen and expanding a range of materials applied to the screen. And

  A pleated screen that solves the above problem is a screen that is suspended from a head box in a zigzag-foldable state along the vertical direction, a first pitch holding cord that is suspended from the screen, and a screen that is suspended from the screen. A second pitch holding cord. A front holding portion provided on the first pitch holding cord for supporting the screen on the front side of the screen by engaging with a front side of the screen; and a rear side on the screen provided on the second pitch holding cord. A rear holding portion that supports the screen on the rear side of the screen by engagement with the side. The first pitch holding cord and the second pitch holding cord are independent from each other, and the front holding portion and the rear holding portion are lateral directions that are directions in which folds formed in the screen extend. To support different positions.

  In the above-mentioned configuration, at least one of the first pitch holding cord and the second pitch holding cord is a juxtaposition target cord, and the juxtaposition target cord out of the front side of the screen and the rear side of the screen It is preferable to provide a parallel raising / lowering cord arranged on the same side and arranged in parallel with the parallel cord.

  In the above configuration, the holding portion provided on the parallel arrangement target cord among the front holding portion and the rear holding portion is an insertion holding portion, and the parallel raising / lowering cord passes through the insertion holding portion. It is preferred that

  In the above configuration, the screen is provided with a crease formed in the screen, and includes a joining piece projecting to the side where the juxtaposed object cord is arranged with respect to the screen, and the juxtaposed lifting cord is the joint It is preferable to pass through an insertion hole formed in the piece.

  In the above configuration, the screen includes a locking member formed in an annular shape on the side where the juxtaposed object cord is disposed with respect to the screen, and the juxtaposed lifting cord is passed through the locking member. It is preferable.

  In the above-described configuration, a plurality of the juxtaposed target cords are provided, at least one of the juxtaposed target cords includes a plurality of the insertion holding units, and the plurality of insertion holding units are a plurality of formed on the screen. It is preferable to support a crease that has been skipped by one or more steps.

  In the above configuration, at least one of the first pitch holding cord and the second pitch holding cord is a facing target code, and is different from the facing target code among the front side of the screen and the rear side of the screen. It is preferable to provide an opposing lifting / lowering cord that is disposed on the side and faces the opposing target cord.

  The said structure WHEREIN: The holding | maintenance part provided in the said opposition object code | cord | chord among the said front side holding | maintenance part and the said rear side holding | maintenance part is an insertion holding | maintenance part, and the said insertion holding | maintenance part is the said opposition raising / lowering from the said opposition object code | cord | chord. It is preferable that the screen passes through the screen toward the cord and the opposed lifting cord is passed through the insertion holding portion.

  In the above configuration, the insertion holding portion is formed in an annular shape by a thread derived from an upper position and a lower position spaced apart from the upper position by a predetermined distance, and a thread derived from the upper position; It is preferable that the yarn led out from the lower position pass through different positions in the vertical direction with respect to the screen.

  The said structure WHEREIN: The said opposing object code | cord | chord is the said 1st pitch holding | maintenance code | cord | chord and the said 2nd pitch holding | maintenance code | cord | chord, and the said front side holding | maintenance part is a said 1st pitch holding | maintenance code among the creases formed in the said screen. A fold protruding toward the direction away from the second pitch holding cord may be passed through the fold protruding toward the direction away from the second pitch holding cord. preferable.

  In the above-described configuration, a plurality of the opposing target cords are provided, at least one of the opposing target cords includes a plurality of the insertion holding units, and the plurality of insertion holding units include a plurality of folds formed on the screen. On the other hand, it is preferable to support a crease that has been skipped by one or more steps.

  In the above configuration, any one of the first pitch holding cord and the second pitch holding cord is a juxtaposition target cord, and the parallel arrangement of the first pitch holding cord and the second pitch holding cord. A code different from the installation target code is a facing target code, and is arranged on the same side as the juxtaposition target code between the front side of the screen and the rear side of the screen and is juxtaposed with the juxtaposition target code. It is preferable to include a side-by-side lifting code, and a facing lifting code that is disposed on a side different from the facing target code among the front side of the screen and the rear side of the screen and faces the facing target code.

  In the above configuration, it is preferable that the first pitch holding cord and the second pitch holding cord are arranged on either the front side of the screen or the rear side of the screen.

The said structure WHEREIN: It is preferable that at least one of the said front side holding part and the said back side holding part is latched by the said screen.
In the above-described configuration, a plurality of the insertion holding portions arranged in the vertical direction are provided, and each of the plurality of insertion holding portions is from an upper position and a lower position spaced apart from the upper position by a certain distance. It is formed in an annular shape by the derived yarn. The yarn led out from the upper position and the yarn led out from the lower position are led separately from the left and right with respect to the lifting / lowering cord, and the yarn led out from the upper position faces the lifting / lowering cord. In addition, it is preferable that the direction in which the yarn led out from the lower position is directed to the lifting / lowering cord is alternately changed along the vertical direction in the plurality of insertion holding portions.

The said structure WHEREIN: It is preferable that the said front side holding part and the said back side holding part support a mutually different position in the horizontal direction which is the direction where the crease | fold formed in the said screen is extended.
In the above configuration, at least one of the front side holding portion and the rear side holding portion is formed by exposing the monofilament yarn in the braided cord in an annular shape at regular intervals toward the outside of the braided cord. It is preferable.

  In the above configuration, it is preferable that at least one of the first pitch holding cord and the second pitch holding cord includes a bent portion in which a bending strength of a desired bent portion is configured to be lower than that of other portions.

  The said structure WHEREIN: It is preferable that the code | cord | chord which is at least one of the said 1st pitch holding | maintenance code | cord | chord and the said 2nd pitch holding | maintenance code | cord has a movement control part which controls that the said screen moves toward the said code | cord. .

  According to the pleated screen in the present disclosure, it is possible to maintain the crease interval formed on the screen between the front side of the screen and the rear side of the screen, and to expand the range of the material applied to the screen.

It is a perspective view which shows the pleat screen of the reference example in this indication. It is a side view which shows the pleat screen of a reference example. It is a bottom view which shows the screen of a reference example. It is a bottom view which shows the relationship of the arrangement | positioning of the raising / lowering code | cord | chord and pitch holding | maintenance cord with respect to the screen in the pleat screen in 1st Embodiment. It is the figure which looked at the pleat screen in a 1st embodiment from the side view direction, and is a figure showing arrangement of a pitch holding cord and a holding part. It is a perspective view which shows a part of perspective structure of the pleat screen in 1st Embodiment, and is the figure seen from the front side of the screen. It is a bottom view which shows the pleats screen in 2nd Embodiment. It is a side view which shows the pleats screen in 3rd Embodiment. It is a perspective view which shows a part of pitch holding | maintenance cord in 3rd Embodiment. It is the schematic which shows the state by which the pitch maintenance code | cord | chord of the pleat screen in 3rd Embodiment was folded. It is the schematic which shows the state by which the screen of the pleat screen in 3rd Embodiment was folded. It is a side view which shows the pleats screen in 4th Embodiment. It is a perspective view which shows a part of pleat screen in 4th Embodiment. It is a front view which shows the raising of a fold. It is a side view which shows a part of pleats screen in 5th Embodiment. It is a side view which shows a part of pleats screen in 6th Embodiment. It is a side view which shows a part of pleat screen in a comparative example. It is a side view which shows a part of pleat screen in a comparative example. It is a perspective view which shows a part of pleats screen in 7th Embodiment. It is a side view which shows the structure of the pitch holding | maintenance cord in 8th Embodiment. It is a side view which shows the effect | action of the pitch holding | maintenance cord in 8th Embodiment. It is an enlarged view which shows a part of pitch holding | maintenance code | cord | chord in 9th Embodiment. It is an enlarged view which shows a part of pitch holding | maintenance code | cord | chord in 10th Embodiment. It is an enlarged view which shows a part of pleats screen in 11th Embodiment, and is a figure which shows the latching | locking part arrange | positioned at the pitch holding | maintenance cord side with respect to a screen. It is a side view which shows a part of pleat screen. It is a side view which shows the effect | action of the latching | locking part provided in the pleat screen in 11th Embodiment. It is a side view which shows the other example of the pleats screen in 11th Embodiment. It is a side view which shows the other example of the pleats screen in 11th Embodiment. It is a side view which shows the modification of the restriction | limiting aspect of a screen movement in the pleat screen in 11th Embodiment. It is a side view which shows the modification of the restriction | limiting aspect of a screen movement in the pleat screen in 11th Embodiment. It is a side view which shows the modification of the restriction | limiting aspect of a screen movement in the pleat screen in 11th Embodiment. It is a side view which shows the restriction | limiting aspect of a screen movement in the pleat screen in 12th Embodiment. It is a side view which shows the modification of the control aspect of a movement of a screen in the pleat screen in 12th Embodiment. It is a side view which shows the modification of the control aspect of a movement of a screen in the pleat screen in 12th Embodiment. It is a perspective view which shows the pleat screen in 13th Embodiment. It is a perspective view which shows the pleat screen in 13th Embodiment. It is a perspective view which shows the pleats screen in 14th Embodiment. It is a perspective view which shows the pleats screen of a modification. It is a side view of the pleat screen which shows the state by which a screen is folded by the pleat screen of a prior art example. It is a side view of the pleat screen which shows the state by which a screen is folded by the pleat screen of a modification. It is a side view of the pleat screen which shows the state by which a screen is folded by the pleat screen of a modification. It is a perspective view which shows the pleats screen of a modification. It is a perspective view which shows a pleat screen provided with three pitch holding | maintenance cords in the pleat screen of a modification. It is a perspective view which shows a pleat screen provided with the raising / lowering cord drawn in the loop shape by the pleat screen of the modification. It is a perspective view which shows a pair type pleat screen in the pleat screen of a modification.

A pleated screen of a reference example in the present disclosure will be described with reference to FIGS.
In the pleated screen shown in FIG. 1, a screen 2 that can be bent in a zigzag shape in a vertical direction is suspended from a head box 1, and a bottom rail 3 is attached to the lower end of the screen 2. The screen 2 is formed by bending a piece of fabric in a zigzag shape.

  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.

  Lifting cords 5 are suspended from the vicinity of both ends in the longitudinal direction of the head box 1, and the upper ends of the two lifting cords 5 are respectively attached to the winding shaft 4, and the winding shaft 4 is operated by operating the operating device. Can be wound or rewound.

  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 thereof. When the lifting / lowering cord 5 is wound on the winding shaft 4, the bottom rail 3 is pulled up and the screen 2 is folded upward, and when the lifting / lowering cord 5 is unwound from the winding shaft 4, 3 descends and the screen 2 is stretched downward.

  A pitch holding cord 6 is hung from the head box 1 to the indoor side of the screen 2 in front of the suspended position of each of the two lifting cords 5. Each of the two pitch holding cords 6 has an upper end attached to the head box 1 and a lower end attached to the bottom rail 3. Each of the two pitch holding cords 6 is independent from each other and is not directly connected to the other pitch holding cords 6 and is not indirectly connected through other cords. The pitch holding cord 6 is set to such a length that the pitch holding cord 6 is almost 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 in the moving range. ing.

  The pitch holding cord 6 is provided with a large number of annular holding portions 7 at equal intervals along the vertical direction. The pitch holding cord 6 is a cord formed by knitting warp 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 part 7 is formed.

  The screen 2 is formed with insertion holes (notches) 8 through which the holding portions 7 can be inserted in the folds adjacent to the lifting / lowering cord 5, that is, in the folds 9 that are convex toward the outdoor side. ing. The insertion hole 8 is a narrow notch that can be inserted through the holding portion 7 formed of a thin thread. In FIG. 1, the size of the insertion hole 8 is exaggerated for convenience of describing the configuration of the insertion hole 8.

  As shown in FIG. 2, the holding portion 7 is inserted from the indoor side of the screen 2 to the outdoor side of the screen 2 through the insertion hole 8, and the elevating cord 5 is inserted into the holding portion 7 exposed to the outdoor side. .

  With such a configuration, when the bottom rail 3 is lowered to the lower limit in the movement range, the tip end portion of each holding portion 7 engages with the lifting / lowering cord 5 and each fold 9 is supported from below by each holding portion 7. In this state, 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 the interval between every other fold 9 in a state where the lower end of the screen 2 is extended to the lower limit within the moving range. For example, the length of the holding portion 7 is formed such that the diameter of the lifting / lowering cord 5 is added to the folding width of the screen 2.

  As shown in FIG. 3, each of the two pitch holding cords 6 is disposed on the same indoor side with respect to the screen 2. The holding portion 7 in each of the two pitch holding cords 6 is fixed to the warp of the pitch holding cord 6 on the indoor side of the screen 2 and penetrates the screen 2 from the indoor side of the screen 2 to the outdoor side of the screen 2. Yes. The insertion hole 8 through which each of the two holding portions 7 is inserted is formed in a portion on the outdoor side that is the rear half of the screen 2 from the center in the front-rear direction of the screen 2. Each of the two holding portions 7 is engaged with a portion on the outdoor side which is the rear half of the screen 2 from the center of the screen 2 in the front-rear direction.

Next, the operation of the pleated screen configured as described above will be described.
When the lifting / lowering 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. At this time, the front and rear edges of the bottom rail 3 are supported by the lifting / lowering cord 5 and the pitch holding cord 6, and the bottom rail 3 is suspended and supported so that the upper surface thereof 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 9 of the screen 2 are held so as to be substantially equidistant.

When the lifting / lowering cord 5 is wound up by the winding shaft 4 from this state, the bottom rail 3 is pulled up and the screen 2 is folded upward.
(First embodiment)
A first embodiment of the pleated screen according to the present disclosure will be described with reference to FIGS. 4 to 6. In the first embodiment, the arrangement of the pitch holding cord 6 and the engagement destination of the holding unit 7 are different from those in the above reference example. Therefore, hereinafter, the arrangement of the pitch holding cord 6 and the engagement destination of the holding unit 7 will be mainly described.

  As shown in FIG. 4, of the two lifting cords 5, one lifting cord 5 is suspended and supported on the indoor side, and the other lifting cord 5 is suspended and supported on the outdoor side. Of the two pitch holding cords 6, one pitch holding cord 6 is suspended and supported outside the screen, and the other pitch holding cord 6 is suspended and supported inside the screen. The lifting / lowering cord 5 suspended and supported on the indoor side of the screen and the pitch holding cord 6 suspended and supported on the outer side of the screen are opposed to each other in the front-rear direction. Moreover, the lifting / lowering cord 5 suspended from and supported by the outside of the screen and the pitch holding cord 6 suspended from and supported by the interior of the screen face each other in the front-rear direction.

  That is, the two lifting / lowering cords 5 and the pitch holding cord 6 suspended at both ends in the extending direction of the fold line 9 are suspended and supported so as to be alternated in the front-rear direction of the screen 2. A bottom rail 3 is attached to the lower end of the pitch holding cord 6 and the lower end of the pitch holding cord 6.

The head box 1 is provided with a winding device that winds up and down the lifting cords 5 simultaneously or rewinds them simultaneously by operating the operating device.
Next, the relationship between the holding portion 7 provided in each of the two pitch holding cords 6 and the portion where the holding portion 7 is engaged in the screen 2 will be described. For convenience of explaining the arrangement of the holding portion 7 and its engagement destination, the lower half of FIG. 5 shows the first pitch cord and the front holding portion, and the upper half of FIG. The cord and the front holding portion are omitted, and the second pitch holding cord and the rear holding portion are shown.

  As shown in FIG. 5, the pitch holding cord 6 disposed outside the screen 2 is set as a first pitch holding cord 61, and the holding portion 7 provided in the first pitch holding cord 61 is a front holding portion. 71 is set. The front holding portion 71 extends from the outdoor side of the screen 2 toward the indoor side of the screen 2. The crease 9 disposed on the front side of the center of the screen 2 in the front-rear direction is set as an indoor fold 91, and the front holding part 71 passes through the insertion hole 8 formed in the indoor fold 91 to the outdoor side of the screen 2. To the indoor side of the screen 2. A portion of the front holding portion 71 exposed to the indoor side of the screen 2 is inserted with the lifting / lowering cord 5 that is an example of a facing lifting / lowering cord, and the front holding portion 71 functions as an insertion holding portion.

  The pitch holding cord 6 disposed on the indoor side of the screen 2 is set as the second pitch holding code 62, and the holding unit 7 provided in the second pitch holding code 62 is set as the rear holding unit 72. The rear holding portion 72 extends from the indoor side of the screen 2 toward the outdoor side of the screen 2. The fold line 9 disposed behind the center in the front-rear direction of the screen 2 is set as an outdoor fold line 92, and the rear holding portion 72 is inserted through the insertion hole 8 formed in the outdoor fold line 92. It penetrates from the indoor side to the outdoor side of the screen 2. A portion of the rear holding portion 72 exposed to the outside of the screen 2 is inserted with the lifting / lowering cord 5, which is an example of a facing lifting / lowering cord, and the rear holding portion 72 functions as an insertion holding portion. .

  As shown in FIG. 6, when the bottom rail 3 is lowered to the lower limit of its moving range, the front end portion of the front holding portion 71 is engaged with the lifting cord 5, and the indoor fold 91 is moved from below by the front holding portion 71. Supported. As a result, in the stretched screen 2, the indoor folds 91 in the screen 2 are held by the first pitch holding cord 61 and arranged at equal intervals in the vertical direction. Further, when the bottom rail 3 is lowered to the lower limit, the distal end portion of the rear holding portion 72 is engaged with the lifting / lowering cord 5 and the outdoor fold 92 is supported by the rear holding portion 72 from below. As a result, in the stretched screen 2, the outdoor folds 92 in the screen 2 are held by the second pitch holding cord 62 and arranged at equal intervals in the vertical direction.

According to the pleated screen, the following effects can be obtained.
(1) Since the lifting / lowering cord 5 that lifts and lowers the screen 2 is not inserted into the screen 2, it is necessary to provide an insertion hole in the screen 2 for inserting the lifting / lowering cord 5 compared to the configuration in which the lifting / lowering cord 5 is inserted into the screen 2. There is no. Therefore, outside light does not leak into the room through the insertion hole for inserting the lifting / lowering cord 5.

  (2) The holding part 7 through which the lifting / lowering cord 5 is inserted supports every other fold line 9 of the screen 2 or a part of the screen 2 connected to the fold line 9 above the holding part 7. Therefore, when the screen 2 is lowered, the interval between the creases 9 is held substantially constant, like the interval between the holding portions 7.

  (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 thread thinner than the lifting / lowering cord 5 to be inserted, the insertion / lowering cord 5 can be inserted. Compared with the configuration in which the wide cut is formed in the screen 2, light leakage from the insertion hole 8 can be reduced.

  (4) The holding portion 7 of the pitch holding cord 6 is not strained in the vertical direction as compared with the lifting cord 5. Therefore, even when the size of the insertion hole 8 through which the holding unit 7 is passed is approximately the same as the thickness of the holding unit 7, when the screen 2 is folded or the screen 2 is stretched, The movement is hardly restricted by the holding unit 7.

  On the other hand, in the configuration in which the lifting / lowering cord 5 is passed through substantially the center in the front-rear direction of the screen 2, the size of the insertion hole through which the lifting / lowering cord 5 passes is approximately the same as the thickness of the lifting / lowering cord 5. When the screen 2 is folded or the screen 2 is stretched, the movement of the screen 2 is restricted by the lifting / lowering cord 5. Therefore, with the configuration described above, the screen 2 can be folded and extended smoothly. In addition, since the size of the insertion hole 8 can be small, the amount of light leaking through the insertion hole 8 is further suppressed.

(5) Since the screen 2 is formed of one piece of cloth that can be folded in a zigzag shape,
There is no need for a joining step of joining one screen 2 as a joined body of a plurality of fabric pieces. Therefore, the manufacturing cost can be suppressed.

  (6) The pitch holding cord 6 formed by the knitting machine is suspended from the head box 1 by a simple operation of inserting the holding portion 7 of the pitch holding cord 6 into each insertion hole 8 of the screen 2 and inserting the lifting / lowering cord 5 into the holding portion 7. The supported part is assembled. Therefore, it is possible to easily assemble a portion that is suspended and supported from the head box 1.

  (7) 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.

  (8) Since the lifting / lowering cords 5 are inserted only into the holding portions 7 inserted into the folds 9 every other stage, the insertion man-hours of the lifting / lowering cords 5 are greatly increased compared to the configuration in which the holding portions 7 are inserted into all the folds 9. Can be reduced.

  (9) The interval between the indoor folds 91 formed on the screen 2 is maintained by the first pitch holding cord 61, the front holding portion 71, and the lifting / lowering cord 5 that passes through the front holding portion 71. Further, the interval between the outdoor folds 92 formed on the screen 2 is maintained by the second pitch holding cord 62, the rear holding portion 72, and the lifting / lowering cord 5 passed through the rear holding portion 72. Then, when the screen 2 is pulled up, the bottom rail 3 is kept in a state where the screen 2 is stacked on the bottom rail 3 while the front side surface of the bottom rail 3 and the rear side surface of the bottom rail 3 are kept horizontally aligned. The screen 2 is folded upward.

  (10) In the screen 2, the part supported by the front holding part 71 and the part supported by the rear holding part 72 are set at different positions in the lateral direction. Therefore, the arrangement of the screen 2 is stabilized as compared with the configuration in which the part supported by the front holding part 71 and the part supported by the rear holding part 72 are set at the same position in the lateral direction.

(Second Embodiment)
A second embodiment of the pleated screen according to the present disclosure will be described with reference to FIG. The second embodiment is different from the first embodiment in the number and arrangement of the pitch holding cords 6. Therefore, the number and arrangement of the pitch holding cords 6 will be mainly described below.

  As shown in FIG. 7, the lifting / lowering cords 5 are disposed in the vicinity of both ends in the longitudinal direction of the head box 1 and the central portion of the head box 1 in the longitudinal direction, and a total of three lifting / lowering cords 5 are pleated. The screen is equipped. The pitch holding cords 6 are also arranged in the vicinity of both end portions in the longitudinal direction of the head box 1 and the central portion in the longitudinal direction of the head box 1, and a total of three pitch holding cords 6 are provided in the pleat screen. ing.

  One pitch holding cord 6 disposed outside the screen 2 at the center in the longitudinal direction of the head box 1 is set as a first pitch holding cord 61 and is provided on the first pitch holding cord 61. The unit 7 is set as the front holding unit 71. The lifting cord 5 is inserted into a portion of the front holding portion 71 exposed to the room side of the screen 2, and the front holding portion 71 functions as an insertion holding portion.

  Each of the two pitch holding cords 6 arranged on the indoor side of the screen 2 in the vicinity of both longitudinal ends of the head box 1 is set as a second pitch holding cord 62. The holding unit 7 provided in the rear side is set as the rear holding unit 72. The lifting cord 5 is inserted into a portion of the rear side holding portion 72 exposed to the outside of the screen 2, and the rear side holding portion 72 functions as an insertion holding portion.

  Even in the configuration described above, the same effect as in the first embodiment can be obtained. In the left-right direction of the screen 2, both ends of the fold 9 of the screen 2 are supported on the rear side of the screen 2, and the center of the fold 9 of the screen 2 is supported on the front side of the screen 2. Therefore, the stability of the arrangement of the screen 2 is improved as compared with a configuration in which only both end portions of one fold line 9 are supported at two points of the front side of the screen 2 and the rear side of the screen 2.

(Third embodiment)
A third embodiment of the pleated screen according to the present disclosure will be described with reference to FIGS. The third embodiment differs from the first embodiment and the second embodiment in the manner in which the lifting / lowering cord 5 is inserted into the holding unit 7. Therefore, below, the insertion aspect of the raising / lowering cord 5 with respect to the holding | maintenance part 7 is mainly demonstrated. Further, while the front side holding part 71 exposed to the indoor side of the screen 2 and the rear side holding part 72 exposed to the outdoor side of the screen 2 are different from each other in the lifting / lowering cord 5, Are similar to each other. Therefore, in the following, description of the insertion mode of the lifting / lowering cord 5 with respect to the front holding portion 71 will be omitted, and the insertion mode of the lifting / lowering cord 5 with respect to the rear holding portion 72 will be mainly described.

  As shown in FIG. 8, the two yarn lead-out positions P <b> 1 and P <b> 2 of each rear holding portion 72 formed by being knitted into the second pitch holding cord 62 are in the vertical direction with respect to the second pitch holding cord 62. It is extended from the position which separated the fixed space | interval t. Each rear holding portion 72 is inserted into the insertion hole 8 provided in the outdoor fold line 92 of the screen 2, and the elevating cord 5 is inserted on the outdoor side of the screen 2. The insertion hole 8 is formed with a small diameter that allows the two threads of the rear holding portion 72 to be inserted.

  As shown in FIG. 9, the lifting / lowering cords 5 are alternately inserted in the left-right direction with respect to the rear holding portion 72. More specifically, among the two rear holding portions 72 adjacent to each other in the vertical direction, in the rear holding portion 72 arranged on the upper side, a line connecting the portion bent at the rear holding portion 72 and the lead-out position P1. The minute 721 is arranged on the left side of the lifting / lowering cord 5. On the other hand, a line segment 722 that connects the portion bent at the rear holding portion 72 and the lead-out position P <b> 2 is arranged on the right side of the lifting / lowering cord 5. On the other hand, in the rear holding part 72 arranged on the lower side, the line segment 721 in the rear holding part 72 is arranged on the right side of the lifting / lowering cord 5, while the line segment 722 in the rear holding part 72. Is arranged on the left side of the lifting / lowering cord 5.

Next, the operation of the pleated screen configured as described above will be described.
The lifting / lowering cord 5 is always tensioned by the weight of the bottom rail 3 or the bottom rail 3 and the screen 2. For this reason, a force that attempts to position the lead-out positions P <b> 1 and P <b> 2 in the horizontal direction acts on the holding portion 7 through which the lifting / lowering cord 5 is inserted from the lifting / lowering cord 5.

  As shown in FIG. 10, when the screen 2 is folded upward in a state where the tension raising / lowering cord 5 and the pitch holding cord 6 are engaged, in the second pitch holding cord 62 folded on the indoor side of the screen 2. The lead-out positions P1 and P2 of the rear holding portions 72 adjacent in the vertical direction are alternately switched in the left-right direction. This is because the lifting / lowering cord 5 is alternately inserted in the left-right direction with respect to the rear holding portion 72.

  As shown in FIG. 11, when the screen 2 is folded upward, the lead-out positions P1 and P2 are arranged as described above. As a result, the second pitch holding cord 62 is regularly folded on the indoor side of the screen 2. It is easy to be in a state. If the second pitch holding cord 62 is irregularly folded on the indoor side of the screen 2, the aesthetics of the pleated screen are impaired. However, in this embodiment, the aesthetics can be prevented from deteriorating.

(Fourth embodiment)
A fourth embodiment of the pleated screen according to the present disclosure will be described with reference to FIGS. 12 to 13. The fourth embodiment is different from the first to third embodiments in the configuration of the distal end portion of the holding portion 7. Therefore, below, the structure in the front-end | tip part of the holding | maintenance part 7 is mainly demonstrated. In addition, the front holding part 71 exposed on the indoor side of the screen 2 and the rear holding part 72 exposed on the outdoor side of the screen 2 are different from each other in the lifting cord 5 passed through the holding part 7 while the holding part 7 The configuration at the tip of 7 is the same. Therefore, in the following, the description of the configuration at the front end portion of the front holding portion 71 will be omitted, and the configuration at the front end portion of the rear holding portion 72 will be mainly described.

  As shown in FIG. 12, the insertion hole 8 is formed in the outdoor fold 92 in the screen 2, and the rear holding part 72 is twisted at the tip of the rear holding part 72 inserted through the insertion hole 8. As a result, an intersection 13 is formed. A small annular portion 12 is formed at the front end portion of the rear holding portion 72 via the intersecting portion 13, and the elevating cord 5 is inserted through the annular portion 12. That is, the intersecting portion 13, which is an inclusion between the insertion hole 8 and the lifting / lowering cord 5, suppresses contact between the portion that defines the insertion hole 8 on the screen 2 and the lifting / lowering cord 5.

  As shown in FIG. 13, since the crossing portion 13 is interposed between the lifting / lowering cord 5 inserted through the annular portion 12 and the outdoor fold line 92 that defines the insertion hole 8 in the screen 2, The lifting / lowering cord 5 and the surrounding portion of the insertion hole 8 are less likely to be rubbed during the lifting / lowering operation. Therefore, even if the lifting / lowering operation of the screen 2 is repeated, it is possible to prevent the outdoor fold 92 from being worn around the insertion hole 8.

  As shown in FIG. 14, as the friction between the lifting / lowering cord 5 and the outdoor fold 92 increases, the portion of the outdoor fold 92 that rubs against the lifting / lowering cord 5 moves upward together with the lifting / lowering cord 5 as the lifting / lowering cord 5 rises. Moving. As a result, when the screen 2 is pulled up, a portion of the outdoor fold 92 near the insertion hole 8 is lifted together with the lifting / lowering cord 5 moving upward, and the outdoor fold 92 is curved so as to wave upward. End up. In this respect, with the above-described configuration, the friction between the lifting / lowering cord 5 and the surrounding portion of the insertion hole 8 is suppressed, so that the outdoor fold line 92 is suppressed from undulating as the screen 2 is pulled up.

(Fifth embodiment)
A fifth embodiment of the pleated screen according to the present disclosure will be described with reference to FIG. The fifth embodiment is different from the fourth embodiment in the configuration of the distal end portion of the holding portion 7. Therefore, below, the structure in the front-end | tip part of the holding | maintenance part 7 is mainly demonstrated.

  As shown in FIG. 15, the end portion of the rear holding portion 72 inserted through the insertion hole 8 of the screen 2 forms an annular portion 14 by entwining two endless tip portions together. The lifting / lowering cord 5 is inserted into the portion 14. That is, from the inner side of the front end of the rear holding portion 72, the front end portion of the rear holding portion 72 is wound only once around the lifting cord 5 in a state where the two are held together, A portion on the base end side of the rear holding portion 72 is drawn out. The intersection 15 in the rear holding portion 72 is formed by the end of the rear holding portion 72 formed in an endless shape and the rear holding portion 72 passed through the inside of the tip.

  Due to the presence of the intersection 15 as an inclusion between the insertion hole 8 and the lifting / lowering cord 5, the insertion hole 8 portion is provided so as not to contact the lifting / lowering cord 5. In such a configuration, since the intersecting portion 15 is interposed between the lifting / lowering cord 5 inserted through the annular portion 14 and the insertion hole 8 of the screen 2, the surroundings of the lifting / lowering cord 5 and the insertion hole 8 during the lifting / lowering operation of the screen 2 are performed. It becomes difficult to rub against the part.

  Therefore, even if the raising / lowering operation of the screen 2 is repeated, it is possible to prevent the crease around the insertion hole 8 from being worn. Further, since the friction between the lifting / lowering cord 5 and the peripheral portion of the insertion hole 8 can be prevented, when the screen 2 is lifted, the folding cord 5 that moves upward prevents the folds near the insertion hole 8 from being lifted. be able to.

  In addition, the said 4th Embodiment and 5th Embodiment can also be changed as follows. That is, as for the inclusion between the insertion hole 8 and the lifting / lowering cord 5, a caulking member larger than the insertion hole 8 is provided in the holding part 7, or two tape members bonded to each other with the holding part 7 interposed therebetween are provided. Alternatively, another member may be attached.

(Sixth embodiment)
A sixth embodiment of a pleated screen according to the present disclosure will be described with reference to FIG. The sixth embodiment differs from the first to fifth embodiments in the relationship between the arrangement of the holding portion 7 with respect to the screen 2 and the position of the fold 9 supported by the holding portion 7. Therefore, in the following, the relationship between the arrangement of the holding portion 7 with respect to the screen 2 and the position of the crease 9 supported by the holding portion 7 will be mainly described. It should be noted that the position to be supported on the screen 2 is the room in the screen 2 between the pitch holding cord 6 arranged on the indoor side of the screen 2 and the pitch holding cord 6 arranged on the outdoor side of the screen 2. While different from each other in whether they are inside or outside of the screen 2, the other points are the same. Therefore, in the following description, the description of the pitch holding cord 6 arranged on the outdoor side of the screen 2 is omitted, and the pitch holding cord 6 arranged on the indoor side of the screen 2 will be mainly described.

  As shown in FIG. 16, the pitch holding cord 6 disposed on the indoor side of the screen 2 is set as a first pitch holding cord 61, and the holding portion 7 provided in the first pitch holding cord 61 is a front holding portion 71. Set as The front holding portion 71 extends from the indoor side of the screen 2 toward the outdoor side of the screen 2. The fold 9 disposed on the front side of the center in the front-rear direction of the screen 2 is set as a room-side fold 91, and the front side holding portion 71 passes through the insertion hole 8 formed in the room-side fold 91 to the room side of the screen 2. To the outside of the screen 2. A portion of the front holding portion 71 exposed to the outside of the screen 2 is inserted with the lifting / lowering cord 5, which is an example of a facing lifting / lowering cord, and the front holding portion 71 functions as an insertion holding portion.

  The front holding portion 71 of the first pitch holding cord 61 is inserted through an insertion hole 8 provided in an indoor fold 91 that is a fold 9 projecting toward the indoor side of the screen 2. That is, the first pitch holding cord 61 is provided so as to support the indoor side of the screen 2 and the insertion hole 8 portion is not in contact with the elevating cord 5. When the screen 2 is lowered to the lower limit in the moving range, the interval between the position of the insertion hole 8 and the first pitch holding cord 61 is set as the interval L1.

  With this configuration, the lifting / lowering cord 5 and the insertion hole 8 inserted through the front holding portion 71 are not rubbed during the lifting / lowering operation of the screen 2. Therefore, wear of the screen 2 near the insertion hole 8 can be prevented. Further, it is possible to prevent the indoor side fold 91 near the insertion hole 8 from being lifted by the lifting / lowering cord 5 that moves upward when the screen 2 is pulled up.

  As shown in FIG. 17, for example, when the insertion hole H is formed in the approximate center of the crease 9 adjacent to each other along the vertical direction, and the holding portion 7 is passed through the insertion hole H, the insertion hole H and the pitch holding cord The interval L2 with 6 is larger than the interval L1. Therefore, when a pulling force in the direction of extending the fold 9 in the vertical direction is applied to the specific crease 9 of the screen 2, the position of the insertion hole H moves in the direction of arrow A shown in FIG.

  As shown in FIG. 18, when the position of the insertion hole H moves along the holding portion 7, the position of the crease 9 greatly moves obliquely upward toward the pitch holding cord 6 side, and the sandwiching angle α of the crease 9 is increased. growing. Then, as indicated by a chain line in FIG. 18, 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 8 and the first pitch holding cord 61 is small, even if the position of the insertion hole 8 tries to move obliquely upward toward the first pitch holding cord 61 side, The moving distance is limited. Therefore, it is possible to suppress a change in the folding angle of the crease 9 of the screen 2 and to prevent the folding direction from being reversed.

  In addition, since the insertion hole 8 is provided in the indoor fold 91 that is convex toward the first pitch holding cord 61 side, when the screen 2 is folded upward, compared to the case where the insertion hole is provided on the lifting cord 5 side, The pitch holding cords 6 are loosened between the folds 9 of the screens 2 that are stacked and folded, and the warp yarns that are folded in a zigzag shape are not easily pinched. Therefore, since the pitch holding cord 6 can be exposed in a regularly folded state, it is possible to improve the beauty when the screen 2 is folded upward. Furthermore, when it is inserted as in the third embodiment, a synergistic effect is exhibited.

(Seventh embodiment)
A seventh embodiment of the pleated screen according to the present disclosure will be described with reference to FIG. The seventh embodiment differs from the first to sixth embodiments in the shape of the holding portion 7 in a state where the lifting / lowering cord 5 is passed. Therefore, below, the shape of the holding | maintenance part 7 in the state through which the raising / lowering cord 5 was passed is mainly demonstrated. In addition, while the pitch holding cord 6 arranged on the indoor side of the screen 2 and the pitch holding cord 6 arranged on the outdoor side of the screen 2 are different from each other, the lifting / lowering cord 5 passed through the holding unit 7 is different. In other respects, they have the same configuration. Therefore, in the following description, the description of the pitch holding cord 6 arranged on the indoor side of the screen 2 is omitted, and the pitch holding cord 6 arranged on the outdoor side of the screen 2 will be mainly described.

  As shown in FIG. 19, the lifting / lowering cord 5 that is inserted through the endless edge of the holding portion 7 that is inserted through the insertion hole 8 is shifted in the horizontal direction of the screen 2 with respect to the insertion hole 8 and hangs down. That is, the insertion hole 8 is provided so as not to contact the lifting / lowering cord 5.

  With such a configuration, friction between the lifting / lowering cord 5 and the peripheral portion of the insertion hole 8 can be prevented, so that wear of the crease portion around the insertion hole 8 can be prevented. Further, since the friction between the lifting / lowering cord 5 and the surrounding portion of the insertion hole 8 can be prevented, it is possible to prevent the folds near the insertion hole 8 from being lifted by the lifting / lowering cord 5 that moves upward when the screen 2 is lifted. Can do.

(Eighth embodiment)
An eighth embodiment of the pleated screen in the present disclosure will be described with reference to FIGS. 20 and 21. In the eighth embodiment, the shape of the holding portion 7 is different from those in the first to seventh embodiments. Therefore, in the following, as in the sixth embodiment, the pitch holding cord 6 disposed on the indoor side of the screen 2 is set as the first pitch holding cord 61, and the holding portion 7 provided in the first pitch holding cord 61. However, taking the configuration set as the front holding portion 71 as an example, the shape of the holding portion 7 in the configuration will be mainly described.

  In addition, while the pitch holding cord 6 arranged on the indoor side of the screen 2 and the pitch holding cord 6 arranged on the outdoor side of the screen 2 are different from each other, the lifting / lowering cord 5 passed through the holding unit 7 is different. In other respects, they have the same configuration. Therefore, in the following description, the description of the pitch holding cord 6 arranged on the outdoor side of the screen 2 is omitted, and the pitch holding cord 6 arranged on the indoor side of the screen 2 will be mainly described.

  As shown in FIG. 20, the first pitch holding cord 61 is formed so that the holding portion 7 is warped along the longitudinal direction of the warp yarn of the first pitch holding cord 61. For example, in the first pitch holding cord 61, the tip side of the holding portion 7 that is separated from the warp of the first pitch holding cord 61, that is, the portion on the lifting cord 5 side in the holding portion 7 is warped upward. Residual stress F <b> 1 is applied to the first pitch holding cord 61.

  As shown in FIG. 21, a direction in which the screen 2 approaches the pitch holding cord 6 by inserting the upwardly holding holder 7 into the insertion hole 8 of the indoor fold 91 of the screen 2. The external force F <b> 2 acts on the holding portion 7. As a result, the screen 2 is easily supported in a state where the screen 2 is close to the pitch holding cord 6 side. Therefore, when the screen 2 is raised, the friction between the crease 9 of the screen 2 and the lifting cord 5 on the outdoor side is reduced, and the screen 2 is prevented from being lifted.

(Ninth embodiment)
A ninth embodiment of the pleated screen according to the present disclosure will be described with reference to FIG. The ninth embodiment is different from the first to eighth embodiments in that a bent portion is formed in the pitch holding cord 6. Therefore, below, the bending part in the pitch holding | maintenance cord 6 is mainly demonstrated.

  As shown in FIG. 22, a bent portion 20 is configured 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. 22, 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. Then, when the pitch holding cord 6 is folded together with the folding of the screen 2, the bending portion 20 actively folds the pitch holding cord 6 so that the pitch holding cord 6 is easily folded regularly as in the third embodiment. doing.

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

(Tenth embodiment)
A tenth embodiment of a pleated screen according to the present disclosure will be described with reference to FIG. The tenth embodiment is different from the first to ninth embodiments in the shape of the pitch holding cord 6. Therefore, in the following, the shape of the pitch holding cord 6 will be mainly described.

  As shown in FIG. 23, for example, a tape-shaped pitch holding cord 6 is used which is wider than the string-like pitch holding cord 6 used in each of the above embodiments. A cord width W that is a width in the horizontal direction of the pitch holding cord 6 is larger than a width in the horizontal direction of the insertion hole 8 formed in the crease 9.

  In the present embodiment having such a configuration, the insertion hole 8 formed in the fold 9 for inserting the holding portion 7 is closed by the wide pitch holding cord 6 itself having the cord width W, and is excellent in light shielding performance. ing.

(Eleventh embodiment)
An eleventh embodiment of a pleated screen according to the present disclosure will be described with reference to FIGS. The eleventh embodiment differs from the first to tenth embodiments in a configuration in which a locking portion that locks the holding portion 7 with respect to the screen 2 is provided. Therefore, below, the structure of a latching part is mainly demonstrated.

  The pitch holding cord 6 disposed on the indoor side of the screen 2 and the pitch holding cord 6 disposed on the outdoor side of the screen 2 are different from each other in the position of the locking portion with respect to the screen 2. The other points have the same configuration. Therefore, in the following, as in the first embodiment, the pitch holding cord 6 disposed on the outdoor side of the screen 2 is set as the first pitch holding cord 61 and is provided on the first pitch holding cord 61. However, the structure set as the front side holding | maintenance part 71 is taken as an example, and the structure of the latching | locking part in it is mainly demonstrated.

  As shown in FIG. 24, the screen 2 is connected to the warp of the first pitch holding cord 61 at a portion of the front holding portion 71 of the first pitch holding cord 61 that is closer to the warp of the first pitch holding cord 61 than the screen 2. A locking portion 10 that can be controlled to approach is provided.

For example, the locking portion 10 is harder than the warp of the first pitch holding cord 61 and is fixed in advance to a predetermined position on the front end side of the front holding portion 71 in the first pitch holding cord 61.
The width in the front-rear direction of the locking portion 10 is the front-rear width w1, and the front-rear width w1 is slightly narrower than the width in the front-rear direction of the warp. On the other hand, the width in the left-right direction of the locking portion 10 is the locking left-right width w 2, and the locking left-right width w 2 is sufficiently larger than the width in the left-right direction of the insertion hole 8. The vertical width of the locking portion 10 is a locking thickness d, which is slightly larger than the thickness of the holding portion 7.

  Even when the front holding portion 71 is a monofilament yarn, it can be fixed by heating by using the locking portion 10 as a fused yarn. Then, the front holding part 71 is inserted from the outdoor side to the indoor side through the insertion hole 8 of the indoor fold line 91, and the elevating cord 5 is inserted into the front holding part 71 after the insertion. As a result, the locking portion 10 of the front holding portion 71 is in a state where it can be locked with the outer peripheral edge portion of the insertion hole 8 of the screen 2.

  Here, while the screen 2 is being lifted, the lifting / lowering cord 5 that lifts the bottom rail 3 attached to the lower end of the screen 2 is always in tension, but the pitch holding cord 6 is tensioned from the vicinity where it is folded. It is no longer in a state. Therefore, the screen 2 can easily escape from the lifting / lowering cord 5 to the pitch holding cord 6 side. In particular, the fact that the screen 2 easily escapes toward the pitch holding cord 6 is that the flexibility of the screen 2 is lowered due to the influence of long-term solar radiation when the screen 2 is opened in a zigzag shape, and the folding resistance of the screen 2 is reduced. This is likely to occur in the case where the value increases.

  As shown in FIG. 25, in the configuration in which the holding portion 7 is not provided with the locking portion 10, when the screen 2 is largely relieved as indicated by an arrow in the drawing due to a decrease in flexibility of the screen 2. There is a possibility that the folding operation associated with the subsequent lifting of the screen 2 may be hindered.

  As shown in FIG. 26, if the holding portion 7 is provided with the locking portion 10, even when the flexibility of the screen 2 is lowered, the lifting / lowering cord 5 and the locking portion 10 of the holding portion 7 The movement of the screen 2 along the front-rear direction is restricted. In particular, when the screen 2 tries to escape from the lifting / lowering cord 5 toward the pitch holding cord 6, the movement of the screen 2 is restricted by the engagement between the locking portion 10 and the screen 2, as shown by a chain line in the figure. Therefore, even when the flexibility of the screen 2 is lowered, the folding associated with the lifting of the screen 2 is performed well.

  In addition, the latching | locking part 10 may be formed from a fused yarn, and may be formed from other than a fused yarn. For example, by attaching the thin caulking member to the holding portion 7, attaching the adhesive tape to the holding portion 7, or providing the holding portion 7 itself with a bent portion protruding in the left-right direction, the locking portion 10 is It may be configured.

  Further, the locking portion 10 may be fixed to the holding portion 7 before being attached to the screen 2 or may be fixed to the holding portion 7 after being attached to the screen 2. As for the latching | locking part 10, the raising / lowering code | cord | chord 5 may be penetrated by the holding | maintenance part 7 of the state inserted in the penetration hole 8, and the latching | locking part 10 may adhere to the holding | maintenance part 7 after that, for example.

  In addition, as shown in the following examples, the movement of the screen 2 can also be restricted by adopting an aspect 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 shown in FIG. 27, an intersection 19 that intersects one end and the other end of the holding portions 7 of each adjacent stage is provided. As shown in FIG. 28, each stage of the holding portion 7 of the pitch holding cord 6 is provided. This can be realized by increasing the vertical interval x2 of the pair of roots of the holding portions 7 of each stage from the vertical interval x1. For example, in FIG. 28, x1 is 5 mm, x2 is 35 mm, the folding angle α1 of the screen 2 is set to 90 °, and the spread angle α2 of the holding portion 7 of the pitch holding cord 6 is set to a narrow angle of 60 °. Yes.

Moreover, the restriction | limiting of the movement of the screen 2 mentioned above can also be changed as follows.
In FIGS. 29 to 31, the lifting / lowering cord 5 and the screen 2 are directly or indirectly engaged in the front / rear direction at a stage different from the insertion stage of the holding part 7 of the pitch holding cord 6. A mode in which the movement of the screen 2 back and forth is regulated by the tension of the cord 5 is shown.

  As shown in FIG. 29, the holding portion 7 provided in the pitch holding cord 6 passes through the fold 9 near the pitch holding cord 6 among the folds 9 in the screen 2. In addition, a joining piece 23 extends toward the lifting / lowering cord 5 at the fold 9 near the lifting / lowering cord 5 among the folds 9 in the screen 2. The lifting / lowering cord 5 is inserted through the insertion hole 24 formed in the joining piece 23. As a result, of the crease 9 in the screen 2, the screen 2 is engaged with the lifting / lowering cord 5 that is tensioned in the vertical direction at a step different from the step through which the holding unit 7 penetrates, and the screen 2 holds the pitch. Movement toward the cord 6 is restricted.

  As shown in FIG. 30, among the folds 9 in the screen 2, the folds 9 close to the lifting / lowering cord 5 have three stages of folds 9, and a holding portion 7 provided in the pitch holding cord 6 passes therethrough. In addition, a joining piece 23 is extended toward the lifting / lowering cord 5 in the fold 9 near the lifting / lowering cord 5 where the holding portion 7 does not penetrate. The lifting / lowering cord 5 is inserted through the insertion hole 24 formed in the joining piece 23. As a result, of the crease 9 in the screen 2, the screen 2 is engaged with the lifting / lowering cord 5 that is tensioned in the vertical direction at a step different from the step through which the holding unit 7 penetrates, and the screen 2 holds the pitch. Movement toward the cord 6 is restricted.

  In the example shown in FIG. 29, the joining pieces 23 are provided in every third fold line 9, 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 the example shown in FIG. 30, the joining pieces 23 are provided at every other fold line 9, and the holding portion 7 is inserted through the insertion hole 8 of the crease 9 of the screen 2 on the lifting cord 5 side between the adjacent joining pieces 23. .

  As shown in FIG. 31, a locking member 25 is used as another member for restricting the screen 2 from moving to the pitch holding cord 6 side. 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 in the crease 9 of the screen 2 on the side opposite to the pitch holding cord 6 (the lifting / lowering cord 5 side). Locked. Even with this configuration, the movement of the screen 2 toward the pitch holding cord 6 is restricted.

(Twelfth embodiment)
A pleat screen according to a twelfth embodiment of the present disclosure will be described with reference to FIGS. 32 to 34. The twelfth embodiment differs from the first to eleventh embodiments in that the holding unit 7 has a movement restricting function in the eleventh embodiment. Therefore, hereinafter, the function of restricting the movement of the screen 2 included in the holding unit will be mainly described.

  As shown in FIG. 32, the pitch holding cord 6 arranged on the indoor side of the screen 2 is set as the first pitch holding cord 61, and the holding portion 7 provided in the first pitch holding cord 61 is the front holding portion 71. Set as The front holding portion 71 has two base end portions that are separated from each other along the vertical direction, and is formed in a single loop shape. The distance between the two base end portions of the front holding portion 71 is approximately the same as the distance along the vertical direction between the indoor fold lines 91 in a state where the screen 2 is stretched. The upper portion of the front holding portion 71 forms the first annular portion 28 by being led out from the insertion hole 8 of the indoor fold 91 to the outdoor side. Further, the lower portion of the front holding portion 71 forms the second annular portion 29 by being led out from the insertion hole 8 of the indoor fold 91 that is one step below. And the raising / lowering cord 5 which is an example of an opposing raising / lowering cord is each penetrated by the 1st cyclic | annular part 28 and the 2nd cyclic | annular part 29, and the front side holding | maintenance part 71 functions as a to-be-inserted holding | maintenance part.

  The pitch holding cord 6 disposed on the outdoor side of the screen 2 is set as the second pitch holding cord 62, and the holding portion 7 provided on the second pitch holding cord 62 is set as the rear holding portion 72. The rear holding portion 72 has two base end portions that are separated from each other along the vertical direction, and is formed in a single loop shape. The distance between the two base end portions in the rear holding portion 72 is approximately the same as the distance along the vertical direction between the outdoor folds 92 in a state where the screen 2 is stretched. The upper portion of the rear holding portion 72 forms the first annular portion 28 by being led out from the insertion hole 8 of the outdoor fold 92 to the indoor side. In addition, the lower portion of the rear holding portion 72 forms the second annular portion 29 by being led out from the insertion hole 8 of the outdoor fold 92 one step below to the indoor side. And the raising / lowering cord 5 which is an example of an opposing raising / lowering cord is penetrated by the 1st cyclic | annular part 28 and the 2nd cyclic | annular part 29, and the rear side holding | maintenance part 72 functions as the to-be-inserted holding | maintenance part.

  When the bottom rail 3 is lowered to the lower limit, the base end side of the front holding portion 71 is engaged with the lifting / lowering cord 5, and the indoor fold 91 is supported by the front holding portion 71 from below. As a result, the indoor folds 91 of the screen 2 are supported by the first pitch holding cord 61 so that the indoor folds 91 of the screen 2 are arranged at equal intervals in the vertical direction. Further, when the bottom rail 3 is lowered to the lower limit, the distal end portion of the rear holding portion 72 is engaged with the lifting / lowering cord 5, and the outdoor fold line 92 is supported from below by the rear holding portion 72. As a result, the outdoor folds 92 of the screen 2 are supported by the second pitch holding cord 62 so that the outdoor folds 92 of the screen 2 are arranged at equal intervals in the vertical direction. When the screen 2 is folded, the excessive movement of the fold 9 toward the pitch holding cord 6 is suppressed by the portion 7J straddling the two indoor folds 91.

Note that the configuration in which the movement of the screen 2 toward the pitch holding cord 6 is restricted by the holding unit 7 can be modified as follows.
As shown in FIG. 33, the warp yarn of the pitch holding cord 6 is formed with a holding portion 7 having two base end portions separated from each other in the vertical direction in a single loop shape. The distance between the two base end portions of the holding portion 7 is about the length of one slope in a mountain formed by one fold 9 in a state where the screen 2 is stretched. The upper portion of the holding portion 7 is led out from the insertion hole 8 of the fold 9 protruding toward the pitch holding cord 6 to the side opposite to the pitch holding cord 6 to form a first annular portion 28. The lower portion of the holding portion 7 is led out from the insertion hole 8 of the lower fold 9 protruding toward the lifting cord 5 to the opposite side of the pitch holding cord 6 to form a second annular portion 29. ing. A portion 7 </ b> K straddling the two insertion holes 8 in the holding portion 7 is in contact with one slope of the mountain formed by the crease 9. The elevating cord 5 is inserted through the first annular portion 28 and the second annular portion 29. When the screen 2 is folded, excessive movement of the crease 9 toward the pitch holding cord 6 is suppressed by the portion 7 </ b> K straddling the two creases 9.

  As shown in FIG. 34, the warp yarn of the pitch holding cord 6 is formed with a holding portion 7 having two base end portions separated from each other in the vertical direction in a single loop shape. The distance between the two base end portions in the holding portion 7 is about the length of the two slopes in the valley formed by one fold 9 in a state where the screen 2 is stretched. The upper part of the holding portion 7 forms a first annular portion 28 by being led out from the insertion hole 8 of the fold 9 protruding toward the lifting / lowering cord 5 toward the lifting / lowering cord 5. Further, the lower portion of the holding portion 7 forms a second annular portion 29 by being led out to the lifting / lowering cord 5 from the insertion hole 8 of the lower fold 9 protruding toward the lifting / lowering cord 5. A portion 7 </ b> L that straddles the two insertion holes 8 in the holding portion 7 is in contact with two slopes of the mountain formed by the crease 9. The elevating cord 5 is inserted through the first annular portion 28 and the second annular portion 29. This also suppresses excessive movement of the crease 9 toward the pitch holding cord 6.

According to the pleated screen of the twelfth embodiment, the following effects can be obtained in addition to the effects described above.
(1) The holding unit 7 for keeping the space between the creases 9 also has a function of restricting the screen 2 from moving toward the pitch holding cord 6. Therefore, an increase in the number of parts constituting the screen 2 can be suppressed as compared with a configuration in which another member for restricting the screen 2 from moving toward the pitch holding cord 6 is used.

  (2) The movement of the screen 2 toward the pitch holding cord 6 is restricted on both the front side of the screen 2 and the rear side of the screen 2. Therefore, as compared with the configuration in which the movement of the screen 2 toward the pitch holding cord 6 is restricted only on the front side of the screen or the rear side of the screen 2, the number of parts restricted on the screen 2 is increased. When the screen 2 is folded, the position of the screen 2 is stabilized.

(13th Embodiment)
A thirteenth embodiment of the pleated screen according to the present disclosure will be described with reference to FIGS. 35 and 36. The thirteenth embodiment differs from the first to twelfth embodiments in that an elevating cord 5 and a pitch holding cord 6 are arranged in parallel on the front side of the screen 2 and the rear side of the screen 2, respectively. Therefore, in the following, the arrangement of the lifting / lowering cord 5 and the arrangement of the pitch holding cord 6 will be mainly described.

  As shown in FIG. 35, of the two lifting cords 5, one lifting cord 5 is suspended and supported on the indoor side of the screen 2, and the other lifting cord 5 is suspended and supported on the outdoor side of the screen 2. Has been. Of the two pitch holding cords 6, one pitch holding cord 6 is suspended and supported outside the screen 2, and the other pitch holding cord 6 is suspended and supported inside the screen 2.

  The lifting / lowering cord 5 suspended and supported on the indoor side of the screen 2 and the pitch holding cord 6 suspended and supported on the indoor side of the screen 2 are juxtaposed along the front-rear direction, and are disposed on the outdoor side of the screen 2. The lifting / lowering cord 5 supported in a suspended manner and the pitch holding cord 6 suspended and supported on the outdoor side of the screen 2 are arranged in parallel along the front-rear direction.

  The lifting / lowering cord 5 suspended and supported on the indoor side of the screen 2 and the lifting / lowering cord 5 suspended and supported on the outdoor side of the screen 2 are arranged at different positions in the lateral direction in which the crease 9 extends. ing. Further, the pitch holding cord 6 suspended and supported on the indoor side of the screen 2 and the pitch holding cord 6 suspended and supported on the outdoor side of the screen 2 are also arranged at different positions in the lateral direction. ing. A bottom rail 3 (not shown) is attached to the lower end of each lifting / lowering cord 5 and the lower end of the pitch holding cord 6.

  Of the folds 9 of the screen 2, an indoor side fold 91 that protrudes toward the indoor side of the screen 2 is connected to an indoor side joining piece 231 that protrudes from the indoor side fold 91 toward the indoor side. The outdoor fold 92 protruding toward the outdoor side of the screen 2 in the fold 9 of the screen 2 is connected to the outdoor joint piece 232 protruding from the outdoor fold 92 toward the outdoor side.

  The indoor side joining piece 231 and the outdoor side joining piece 232 are each formed in a strip shape extending along the crease 9. An insertion hole 23 </ b> H that penetrates the indoor joint piece 231 along the vertical direction is formed at the right end in the lateral direction of the indoor joint piece 231. Further, an insertion hole 23 </ b> H that penetrates the outdoor joint piece 232 along the vertical direction is formed at the left end portion in the lateral direction of the outdoor joint piece 232. The lifting / lowering cord 5 is passed through the insertion hole 23H formed in the indoor-side joining piece 231 and the insertion hole 23H formed in the outdoor-side joining piece 232, respectively.

  The pitch holding cord 6 disposed on the indoor side of the screen 2 is set as the first pitch holding code 61, and the holding unit 7 provided in the first pitch holding code 61 is set as the front holding unit 71. The front holding portion 71 is formed in an annular shape extending from the first pitch holding cord 61 toward the lifting cord 5. The front holding portion 71 is fixed to the upper side of the indoor side joining piece 231 by the first pitch holding cord 61 and is routed from the first pitch holding cord 61 to the lower side of the indoor side joining piece 231. A lifting cord 5 that is an example of a side-by-side lifting cord is inserted through a portion of the front holding portion 71 that is routed below the indoor joint piece 231, and the front holding portion 71 functions as an insertion holding portion. doing.

  The pitch holding cord 6 disposed on the outdoor side of the screen 2 is set as the second pitch holding cord 62, and the holding portion 7 provided on the second pitch holding cord 62 is set as the rear holding portion 72. The rear holding portion 72 is formed in an annular shape extending from the second pitch holding cord 62 toward the lifting cord 5. The rear holding portion 72 is fixed to the upper side of the outdoor joint piece 232 by the second pitch holding cord 62, and is routed from the second pitch holding cord 62 to the lower side of the outdoor joint piece 232. In the part drawn by the rear side holding part 72 to the lower side of the outdoor joint piece 232, the raising / lowering cord 5 which is an example of a parallel raising / lowering cord is inserted, and the rear side holding part 72 is inserted into the insertion holding part. Is functioning.

  In addition, each of the front side holding | maintenance part 71 and the rear side holding | maintenance part 72 is formed with the monofilament yarn contained in the pitch holding | maintenance cord 6, for example similarly to the 1st-11th embodiment.

  When the bottom rail 3 is lowered to the lower limit in the movement range, the front end portion of the front holding portion 71 is engaged with the lifting / lowering cord 5, and the indoor side joining piece 231 and the indoor side fold 91 are moved to the front side. It is supported by the holding portion 71 from below. As a result, each of the plurality of indoor folds 91 is supported by the first pitch holding cord 61 so that the indoor folds 91 in the screen 2 are arranged at equal intervals in the vertical direction.

  Further, when the bottom rail 3 is lowered to the lower limit in the moving range, the tip end portion of the rear holding portion 72 is engaged with the lifting / lowering cord 5, and the outdoor fold 92 is moved to the rear holding portion 72 from below. Supported. As a result, each of the plurality of outdoor folds 92 is supported by the second pitch holding cord 62 so that the outdoor folds 92 in the screen 2 are arranged at equal intervals in the vertical direction.

In addition, the aspect of engagement of the lifting / lowering cord 5 and the screen 2 can be changed as follows.
As shown in FIG. 36, an insertion hole 25H through which the lifting / lowering cord 5 is inserted penetrates the locking member 25 formed in an annular shape along the vertical direction, and the base end portion of the locking member 25 Is formed with a large locking portion 25E toward the base end. The indoor fold 91 is formed with a locking hole into which the locking portion 25E is inserted. Then, the locking member 25 is attached to the indoor fold 91 by inserting the locking portion 25 </ b> E into the locking hole formed in the indoor fold 91.

  The locking member 25 attached to the indoor side fold 91 locks the movement of the locking member 25 toward the indoor side by the engagement of the indoor fold 91 and the locking portion 25E. The lifting / lowering cord 5 is inserted into the insertion hole 25H of the locking member 25 so that the locking member 25 and the lifting / lowering cord 5 can move relative to each other in the vertical direction. The screen 2 is engaged.

  The front holding portion 71 is fixed to the upper side of the locking member 25 by the first pitch holding cord 61, and is routed from the first pitch holding cord 61 to the lower side of the locking member 25. The lifting / lowering cord 5, which is an example of a side-by-side lifting / lowering cord, is inserted into a portion of the front holding portion 71 that is routed to the lower side of the locking member 25, and the front holding portion 71 functions as an insertion holding portion. ing.

  Further, the direction in which the lifting / lowering cord 5 and the pitch holding cord 6 are arranged is not limited to the front-rear direction, and may be, for example, a lateral direction. Further, the position where the set of cords arranged side by side may be arranged only on the front side of the screen 2 or only on the rear side of the screen 2. In short, the lifting / lowering cord 5 and the pitch holding cord 6 may be configured to be aligned with each other on at least one of the front side of the screen 2 and the rear side of the screen 2.

According to the pleated screen described above, the following effects can be obtained in addition to the effects described above.
(1) In the configuration used for the engagement between the holding portion 7 and the screen 2, a hole penetrating the screen 2 along the front-rear direction is not required. Therefore, light leakage at the screen 2 is further reduced.

  (2) The lifting / lowering cord 5 to be tensioned is passed through the insertion hole 23H formed in the indoor-side joining piece 231 and the other lifting / lowering cord 5 to be tensioned is inserted into the insertion hole 23H formed in the outdoor-side joining piece 232. Passed. Therefore, similarly to the effect obtained in the twelfth embodiment, the screen 2 is prevented from escaping toward the first pitch holding cord 61 and the screen 2 is prevented from escaping toward the second pitch holding cord 62. It is done.

(Fourteenth embodiment)
A fourteenth embodiment of the pleat screen according to the present disclosure will be described with reference to FIG. The fourteenth embodiment is the same as the thirteenth embodiment in that the elevating cord 5 and the pitch holding cord 6 are arranged in parallel on the front side of the screen 2 and the rear side of the screen 2, respectively. The structure of the holding part 7 is different from each other. Therefore, below, the structure of the holding | maintenance part 7 is mainly demonstrated.

  As shown in FIG. 37, the pitch holding cord 6 arranged on the indoor side of the screen 2 is set as the first pitch holding cord 61, and the holding portion 7 provided in the first pitch holding cord 61 is the front holding portion 71. Set as The front holding portion 71 includes a fixing portion 7a fixed to the first pitch holding cord 61, a retaining member 7b locked to the indoor fold line 91, and a thin thread-like portion 7c that connects the fixing portion 7a and the retaining member 7b. It is composed of

  The indoor side fold 91 is formed with two slits, a fixed side slit 8 a and a retaining slit 8 b, and these two slits are arranged at intervals along the indoor side fold 91. The fixing portion 7a constituting the front holding portion 71 is disposed above the indoor side fold line 91 in which the fixing side slit 8a and the retaining slit 8b are formed.

  The thin thread-like portion 7c that connects the fixing portion 7a and the retaining member 7b is drawn from the fixing portion 7a to the outdoor side of the stationary slit 8a through the stationary slit 8a, and is removed from the stationary slit 8a through the retaining slit 8b. It is routed to the indoor side of the stop slit 8b. The retaining stopper 7b disposed on the indoor side of the retaining slit 8b is locked by the retaining slit 8b, and the interior of the screen 2 is supported by the first pitch holding cord 61.

  The pitch holding cord 6 disposed on the outdoor side of the screen 2 is set as the second pitch holding cord 62, and the holding portion 7 provided on the second pitch holding cord 62 is set as the rear holding portion 72. The rear holding portion 72 includes a fixing portion 7a fixed to the second pitch holding cord 62, a retaining member 7b locked to the outdoor fold 92, and a fine thread-like portion 7c that connects the fixing portion 7a and the retaining member 7b. It consists of and.

  The outdoor fold line 92 is formed with two slits, that is, a fixed slit 8 a and a retaining slit 8 b, and these two slits are arranged along the outdoor fold line 92 at intervals. The fixing portion 7a constituting the rear holding portion 72 is disposed above the outdoor fold line 92 in which the fixing side slit 8a and the retaining slit 8b are formed. The thin filamentous portion 7c that connects the fixed portion 7a and the retaining member 7b is drawn from the fixed portion 7a to the indoor side of the stationary slit 8a through the stationary slit 8a, and is removed from the stationary slit 8a through the retaining slit 8b. It is routed outside the stop slit 8b. Then, the stopper 7 b disposed outside the retaining slit 8 b is locked by the retaining slit 8 b, so that the outside of the screen 2 is supported by the second pitch holding cord 62.

  The fixing portion 7a may be, for example, a resin-molded member fixed to the warp yarn of the pitch holding cord 6, or may be a holding member that holds the warp yarn of the pitch holding cord 6 and the fine yarn-like portion 7c. In short, the fixing part 7 a may be configured to fix the fine thread-like part 7 c to the warp yarn of the pitch holding cord 6. In the holding part 7, the fixing part 7a may be omitted, and the yarn itself knitted into the pitch holding cord 6 may function as the fine thread-like part 7c.

  The retainer 7b may be, for example, a resin molded member fixed to the fine thread-like part 7c, or may be a clamping member that sandwiches the fine thread-like part 7c. In short, the stopper 7b may be configured to be fixed to the thin thread portion 7c and locked to the stopper slit 8b. Note that the holding portion 7 may be configured such that the retainer 7b is omitted and a knot or the like formed at the tip of the thin thread-like portion 7c functions as the retainer 7b.

In addition, each said embodiment can also be changed as follows.
In the first to twelfth embodiments, the pitch holding cord 6 and the lifting / lowering cord 5 face each other in the front-rear direction, and in the direction in which the crease 9 extends, the plurality of pitch holding cords 6 are arranged at different positions. Has been. On the other hand, in the thirteenth and fourteenth embodiments, one set of cords in which the pitch holding cord 6 and the lifting / lowering cord 5 are juxtaposed with each other is formed, and each of the front side of the screen 2 and the rear side of the screen 2 is provided. A code set is arranged. Not limited to this, each of the first to fourteenth embodiments may be combined with at least one other embodiment.

  At this time, with respect to the first to twelfth embodiments, a plurality of different embodiments may be applied to one set of codes and the holding unit 7 used therefor, Different embodiments may be applied to the holding unit 7 used. Also, regarding the thirteenth and fourteenth embodiments, different embodiments may be applied to one set of cords and the holding unit 7 used therefor, or a plurality of code sets and holding units used therefor Different embodiments may be applied to 7. Further, the plurality of pitch holding cords 6 and the plurality of lifting cords 5 provided in one pleat screen are the relationship between the pitch holding cord 6 and the lifting cord 5 shown in the first to twelfth embodiments, and Both of the relationship between the pitch holding cord 6 and the lifting cord 5 shown in the thirteenth and fourteenth embodiments may be included.

  For example, as shown in FIG. 38, locking members 25 are attached to both ends of the screen 2 in the direction in which the crease 9 extends, on the outdoor side of the screen 2. Each of the two locking members 25 is inserted with a lifting / lowering cord 5 disposed outside the screen 2. Each of the two lifting / lowering cords 5 is also inserted into the holding portion 7 in the second pitch holding cord 62 arranged on the outdoor side of the screen 2. The holding portion 7 provided in each of the two second pitch holding cords 62 functions as a rear holding portion 72 that supports the outdoor fold line 92.

  On the other hand, the first pitch holding cord 61 is disposed outside the screen 2 at the center in the direction in which the crease 9 extends, and on the indoor side of the screen 2 in the direction in which the crease 9 extends. The raising / lowering cord 5 is arrange | positioned in the center part. The holding unit 7 provided in the first pitch holding cord 61 functions as a front holding unit 71 that supports the indoor fold line 91.

  With such a configuration, in addition to obtaining the above-described effects, it is also possible to use only one lifting / lowering cord 5 as a cord disposed on the indoor side of the screen 2. It is therefore possible to enhance the aesthetics of the pleated screen.

  -In 1st-12th embodiment, the space | interval between the raising / lowering cord 5 and the pitch holding | maintenance cord 6 which mutually oppose in the front-back direction is more than the width which occupies along the front-back direction of the folded screen 2. It is preferable.

  As shown in FIG. 39, in the configuration in which the interval WL between the warp yarns 52 of the ladder cord 51 is less than the width 53W occupied along the front-rear direction of the folded screen 53 in the pleated screen of the conventional example, the ladder cord 51 The length of the weft 54 is also less than the width 53 W in the front-rear direction occupied by the folded screen 53. When the screen 53 is folded, the width occupied in the front-rear direction on the screen 53 in the folding process gradually becomes larger than the length of the weft 54 of the ladder cord 51.

  At this time, as the folding of the screen 53 proceeds, the screen 53 tries to increase the interval between the warp yarns 52 of the ladder cord 51 as shown by the chain line in FIG. The interval is limited by the weft 54 of the ladder cord 51. As a result, the warp yarn 52 of the ladder cord 51 slackened in the vertical direction enters the space between the folds of the screen 53 because the width occupied in the front-rear direction of the screen 53 increases in the process of folding. And since the warp yarn 52 of the ladder cord 51 enters between the folds, the folded screen 53 is bulky along the vertical direction, and the aesthetics are impaired.

  As shown in FIG. 40, in the configuration according to the above-described modification, the interval W56 between the lifting / lowering cord 5 and the pitch holding cord 6 facing each other in the front / rear direction is along the front / rear direction of the folded screen 2. The occupied width is 2 W or more. Therefore, even if the folding of the screen 2 progresses and the width of the screen 2 occupying along the front-rear direction gradually increases in the process of folding, the screen 2 does not act to increase the interval W56. As a result, since the slack pitch holding cord 6 is not pulled toward the lifting / lowering cord 5, the pitch holding cord 6 is prevented from entering between the creases 9. And it is suppressed that the folded screen 2 is bulky along an up-down direction, and the aesthetics of the folded screen 2 are also improved. The same effect can be obtained even if the holding portion 7 that connects the lifting / lowering cord 5 and the pitch holding cord 6 has the following configuration.

  As shown in FIG. 41, among the folds 9 formed on the screen 2, the holding portion 7 provided on the pitch holding cord 6 supports the fold 9 protruding toward the lifting cord 5. And the space | interval W56 between the raising / lowering cord 5 and the pitch holding | maintenance cord 6 which mutually oppose in the front-back direction is more than the width 2W which occupies along the front-back direction of the folded screen 2. FIG. Even in such a configuration, the holding portion 7 provided on the pitch holding cord 6 supports the fold 9 protruding toward the pitch holding cord 6, and the pitch holding cord 6 enters between the folds 9. It can be suppressed.

  As shown in FIG. 42, among the folds 9 formed on the screen 2, the plurality of holding portions 7 provided on the pitch holding cord 6 are directed toward the folds 9 protruding toward the pitch holding cord 6 and the lifting cord 5. It supports both the crease 9 protruding. And the space | interval W56 between the raising / lowering cord 5 and the pitch holding | maintenance cord 6 which mutually oppose in the front-back direction is more than the width 2W which occupies along the front-back direction of the folded screen 2. FIG. Even in such a configuration, the holding portion 7 provided on the pitch holding cord 6 supports the fold 9 protruding toward the pitch holding cord 6, and the pitch holding cord 6 enters between the folds 9. It can be suppressed.

  In the first to twelfth embodiments, the insertion hole 8 through which the holding unit 7 is passed is not limited to the slit formed in the screen 2, for example, a gap surrounded by the weft and the warp that constitute the screen 2. For example, it may be a very small hole diameter through which the holding portion 7 can pass. With such a configuration, the trouble of forming a separate slit in the screen 2 can be saved and light leakage through the insertion hole 8 can be suppressed.

  In the first to twelfth embodiments, the insertion hole 8 of the screen 2 may be formed simultaneously with the insertion of the holding portion 7 of the pitch holding cord 6, and the insertion hole is previously formed in the screen 2. It may be formed. Further, the insertion hole 8 may be formed by expanding the gap between the yarns without cutting the warp yarn and the weft yarn constituting the screen 2. With such a configuration, for example, when the lifting / lowering cord 5 contacts the insertion hole 8, fraying between the warp and weft of the screen 2 is reduced, and as a result, the durability of the screen 2 is enhanced.

  In the first to twelfth embodiments, the holding portion 7 of the pitch holding cord 6 may be pulled out from the warp yarn of the pitch holding cord 6 as one yarn. At this time, a small loop (annular portion) into which the lifting / lowering cord 5 is inserted is formed in a portion of the holding portion 7 that penetrates the screen 2. With such a configuration, since a small loop exists as an inclusion between the insertion hole 8 of the screen 2 and the lifting / lowering cord 5, it is possible to prevent the screen 2 from being worn at the peripheral edge of the insertion hole 8.

  -The part supported by the holding part 7 in the screen 2 is not limited to the crease 9 or other members attached to the crease 9, but may be any position where the distance between the creases 9 is maintained. 2 is appropriately selected. Moreover, the site | part supported by the holding | maintenance part 7 in the screen 2 may be set for every fold 9 of several steps. An example in which the support position is set for each of the plurality of fold lines 9 will be described with reference to FIG.

  43, as shown in FIG. 43, in the configuration in which the three lifting / lowering cords 5 and the three pitch holding cords 6 are suspended, all the stages of the folds 9 in the screen 2 at both ends in the extending direction of the folds 9 Is supported by the holding portion 7. Then, the screen 2 may be supported by the holding unit 7 at every other stage of the crease 9 in the screen 2 at the center in the extending direction of the crease 9.

  If the fold line 9 supported by the holding unit 7 is configured to be skipped, the number of holding units 7 in the pitch holding cord 6 can be omitted, and the labor for forming a support structure by the holding unit 7 can be reduced. Although the fold line 9 supported by the holding portion 7 is skipped by one step, it may be skipped by two or more steps. In addition to the configuration in which the fold 9 supported by the holding portion 7 is skipped at the center of the head box 1, the fold 9 supported by the holding portion 7 is skipped at both ends in the extending direction of the fold 9. May be. Moreover, it is good also as a structure which skips both.

  In addition, if the fold line 9 supported by the holding unit 7 is configured to be skipped, the number of locations where the holding unit 7 and the screen 2 are engaged is small. Light leakage can be suppressed as much as possible, and the light shielding property can be improved.

  Although there is a concern that the zigzag shape of the screen 2 is likely to collapse due to the above-described configuration, the holding portions 7 of the pitch holding cord 6 are formed at all folds 9 at both ends in the direction in which the folds 9 extend. Support. Therefore, the zigzag shape is not easily broken in the entire screen 2, and a regular zigzag shape can be maintained as much as possible.

  In addition, when it is set as said flying structure, it is preferable to set the bending angle of the screen 2 to 60 degrees-90 degrees. 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.

  In addition, for example, in a configuration in which the four lifting / lowering cords 5 and the pitch holding cord 6 are suspended and supported, at both ends in the direction in which the folds 9 extend, all stages of the folds 9 in the screen 2 are held by the holding portions 7. Supported. The screen 2 may be supported by the holding unit 7 at every other stage of the crease 9 in the screen 2 at two locations in the center of the head box 1. Even in such a configuration, the same effect as the above configuration can be obtained.

  In addition, for example, in a configuration in which five lifting cords 5 and pitch holding cords 6 are suspended and supported, at both ends in the direction in which the folds 9 extend and at the center, all the folds 9 in the screen 2 are It is supported by the holding part 7. Then, the screen 2 may be supported by the holding portion 7 at every other stage of the crease 9 in the screen 2 at two places between the both ends and the central portion in the extending direction of the crease 9. Even in such a configuration, the same effect as the above configuration can be obtained. In the case of an odd number of 7 or more, the same pattern as above may be repeated.

  In each of the above embodiments, the lifting / lowering cord 5 may be configured in a loop shape by a single cord between the head box 1 and the bottom rail 3 and routed through the inside of the bottom rail 3. An example will be described with reference to FIG.

  As shown in FIG. 44, the base end of the lifting / lowering cord 5 arranged on the left side in the drawing is fixed to the outdoor portion of the head box 1, passes through the outdoor side of the screen 2, and reaches the bottom rail 3. Is passed from the outdoor portion to the inside of the bottom rail 3. 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 to the outside of the bottom rail 3 and passes through the indoor side of the screen 2 to the indoor side portion of the head box 1. To the inside of the head box 1. Next, the elevating cord 5 passed through the inside of the head box 1 is suspended from a predetermined portion of the head box 1.

  Also, the base end of the lifting / lowering cord 5 disposed on the right side of FIG. 44 is fixed to the indoor side portion by the head box 1, passes through the indoor side of the screen 2, and extends from the indoor side portion of the bottom rail 3. It passes through the inside of the bottom rail 3. Next, the lifting / lowering cord 5 passed through the inside of the bottom rail 3 is led out from the outdoor portion of the bottom rail 3 to the outside of the bottom rail 3 and passes through the outdoor side of the screen 2 to the outdoor portion of the head box 1. To the inside of the head box 1. Next, the elevating cord 5 passed through the inside of the head box 1 is suspended from a predetermined portion of the head box 1. The lifting cord 5 at each end of the head box 1 is similarly stretched, and the tips are gathered together.

  In this way, the lifting / lowering cord 5 passing through the inside of the screen 2 and the outside of the screen 2 is inserted into the holding portion 7 of the pitch holding cord 6. At this time, only the lifting / lowering cord 5 on the indoor side of the screen 2 may be inserted into the holding portion 7, or only the lifting / lowering cord 5 on the outdoor side of the screen 2 may be inserted into the holding portion 7. Both may be inserted through the holding portion 7. With such a configuration, the bottom rail 3 can be maintained horizontally, and the operating force required to raise and lower the lifting / lowering cord 5 can also be reduced.

  -The part supported by the holding part 7 in the screen 2 may be a part without the crease 9, that is, a part between the creases 9 adjacent to each other in the vertical direction. In short, any part that supports the front side of the screen 2 or the rear side of the screen 2 with respect to the center in the front-rear direction of the screen 2 may be used.

  The pleat screen may be configured to include two screens 2 in the front-rear direction. At this time, the pitch holding cord described above is applied to at least one of the front screen 2 and the rear screen 2. 6 and the holding unit 7 may be applied.

  The pitch holding cord 6 and the holding unit 7 in each of the above embodiments can be applied to a pair type pleated screen in which the two screens 2 are arranged in the vertical direction. An example will be described with reference to FIG.

  As shown in FIG. 45, the pair type pleated screen includes an upper screen 2U between the head box 1 and the intermediate rail 3M, and a lower screen 2B between the intermediate rail 3M and the bottom rail 3. It has been.

  At both ends in the longitudinal direction of the head box 1, the first pitch holding cord 61 is disposed on the indoor side of the upper screen 2U, and the chamber of the upper screen 2U is disposed at the center in the longitudinal direction of the head box 1. A second pitch holding cord 62 is disposed outside. The holding portions 7 provided in the first pitch holding cord 61 are passed through the indoor folds 91 in the upper screen 2U every other step. The holding portions 7 provided in the second pitch holding cord 62 are passed through the outdoor folds 92 in the upper screen 2U every other step.

  At both ends in the longitudinal direction of the head box 1, a first pitch holding cord 61 is disposed on the indoor side of the lower screen 2 </ b> B, and a chamber of the lower screen 2 </ b> B is disposed at the center in the longitudinal direction of the head box 1. A second pitch holding cord 62 is disposed outside. The holding portion 7 provided in the first pitch holding cord 61 passes through the indoor folds 91 in the lower screen 2B every other step. The holding portion 7 provided in the second pitch holding cord 62 passes through the outdoor folds 92 in the lower screen 2B every other step.

  Among the lifting / lowering cords 5a for lifting / lowering the intermediate rail 3M, the lifting / lowering cords 5a arranged at both ends in the longitudinal direction of the head box 1 are passed through the holding unit 7 on the outdoor side of the upper screen 2U. Of the lifting / lowering cords 5a for lifting / lowering the intermediate rail 3M, the lifting / lowering cords 5a arranged at the center in the longitudinal direction of the head box 1 are passed through the holding unit 7 on the indoor side of the upper screen 2U.

  Of the lifting / lowering cords 5b for lifting / lowering the bottom rail 3, the lifting / lowering cords 5b arranged at both ends in the longitudinal direction of the head box 1 are passed through the holding unit 7 outside the upper screen 2U, and the lower screen 2B. Is passed through the holding portion 7 on the outdoor side. Of the lifting / lowering cords 5b for lifting / lowering the bottom rail 3, the lifting / lowering cords 5b arranged at the center in the longitudinal direction of the head box 1 are passed through the holding unit 7 on the indoor side of the upper screen 2U, and the lower screen 2B. Is passed through the holding portion 7 on the indoor side.

-Each above-mentioned embodiment may be applied not only to a hanging type pleats screen but to a bottom up type pleated screen.
-For fixing the upper end of the pitch holding cord in each of the above embodiments, it is directly attached to the head box 1 or a part fixed to the head box, for example, a long member for fixing the upper end of the screen 2 to the head box 1 It may be attached to the head box 1 indirectly by attaching it to a support for supporting the cloth presser and the internal drive parts, and further to a cap or the like.

  The holding portion 7 of the pitch holding cord 6 of each of the above embodiments may be other yarns such as a multifilament yarn and a span yarn instead of the monofilament yarn.

  α ... sandwiching angle, d ... locking thickness, H ... insertion hole, t, L1, L2, WL, W56 ... spacing, W ... cord width, α1 ... bending angle, α2 ... spread angle, F1 ... residual stress, F2, F3: External force, P1, P2: Derived position, w1: Locking width before and after, w2: Locking left and right width, x1, x2: Vertical distance, 1 ... Head box, 2,53 ... Screen, 3 ... Bottom rail, DESCRIPTION OF SYMBOLS 4 ... Winding shaft, 5, 5a, 5b ... Elevating cord, 6 ... Pitch holding cord, 7 ... Holding part, 7a ... Fixing part, 7b ... Retaining prevention, 7c ... Fine thread-like part, 8 ... Insertion hole, 8a ... Fixing Side slit, 8b ... retaining slit, 9, 9a, 9b ... crease, 10, 23E, 27 ... locking part, 12, 14 ... annular part, 13, 15, 19 ... crossing part, 20 ... bending part, 21 ... Warp yarn, 22 ... Weft yarn, 23 ... Joining piece, 23H, 24, 25H ... Insertion hole, 25 ... Locking member, DESCRIPTION OF SYMBOLS 8 ... 1st annular part, 29 ... 2nd annular part, 61 ... 1st pitch holding cord, 62 ... 2nd pitch holding cord, 71 ... Front side holding part, 72 ... Rear side holding part, 91 ... Indoor side fold, 92 ... outdoor side folds, 231 ... indoor side joining pieces, 232 ... outdoor side joining pieces, 721, 722 ... line segments.

Claims (10)

A screen suspended from the headbox in a zigzag-foldable state along the vertical direction;
A first pitch holding cord suspended from the screen;
A second pitch holding cord suspended from the screen;
A front holding portion that is provided on the first pitch holding cord and supports the screen on the front side of the screen by engagement with the front side of the screen;
A rear holding portion that is provided on the second pitch holding cord and supports the screen on the rear side of the screen by engagement with the rear side of the screen,
The first pitch holding cord and the second pitch holding cord are independent of each other,
The pleats screen in which the front holding part and the rear holding part support different positions in a lateral direction that is a direction in which a fold formed in the screen extends. At least one of the first pitch holding cord and the second pitch holding cord is a juxtaposition target cord,
2. The pleated screen according to claim 1, further comprising a side-by-side lifting code that is disposed on the same side of the front side of the screen and the rear side of the screen as the side-by-side target code and is side by side with the side-by-side target code. Of the front side holding part and the rear side holding part, the holding part provided in the juxtaposition target cord is an insertion holding part,
The pleated screen according to claim 2, wherein the juxtaposed lifting cord is passed through the insertion holding portion. At least one of the first pitch holding cord and the second pitch holding cord is a facing target cord,
2. The pleated screen according to claim 1, further comprising an opposing lifting cord that is disposed on a side different from the opposing target cord between a front side of the screen and a rear side of the screen and faces the opposing target cord. Of the front side holding part and the rear side holding part, the holding part provided on the opposed target cord is an insertion holding part,
5. The pleated screen according to claim 4, wherein the insertion holding part penetrates the screen from the opposed object code toward the opposed lifting code, and the opposed lifting code is passed through the inserted holding part. Any one of the first pitch holding cord and the second pitch holding cord is a parallel arrangement target cord,
Of the first pitch holding cord and the second pitch holding cord, a code different from the parallel target code is a facing target code,
A juxtaposed lifting cord arranged on the same side as the juxtaposition target cord among the front side of the screen and the rear side of the screen, and juxtaposed with the juxtaposition target cord;
2. The pleated screen according to claim 1, further comprising: an opposing lifting / lowering cord disposed on a side different from the opposing target code among a front side of the screen and a rear side of the screen and facing the opposing target code. The pleat according to any one of claims 4 to 6, wherein an interval in the front-rear direction between the opposed cord and the opposed lifting cord is larger than a width in the front-rear direction of the screen in a folded state of the screen. screen. The pleated screen according to claim 6 or 7, wherein the first pitch holding cord and the second pitch holding cord are disposed on either the front side of the screen or the rear side of the screen. The pleated screen according to claim 1, wherein at least one of the front holding part and the rear holding part is locked to the screen. A plurality of the insertion holding portions arranged along the vertical direction,
Each of the plurality of insertion holding portions is formed in an annular shape by a thread derived from an upper position and a lower position spaced apart from the upper position by a certain distance,
The yarn derived from the upper position and the yarn derived from the lower position are divided into left and right with respect to the lifting cord,
The direction in which the yarn led out from the upper position is directed to the lifting / lowering cord and the direction in which the yarn led out from the lower position is directed to the lifting / lowering cord are along the vertical direction in the plurality of insertion holding portions. The pleated screen according to claim 3 or 5, wherein the pleated screen is alternately changed.

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