JP2019070305A - Pleat screen - Google Patents

Abstract

To provide a pleat screen which prevents light from leaking out and has high designability.SOLUTION: A pleat screen of the present invention comprises an upper screen 6U and a lower screen 6L which can be individually lifted/lowered by a plurality of lifting and lowering cords 3U, 3L. A first lifting and lowering cord 3U (or 3L) of the plurality of lifting and lowering cords 3U, 3L is configured to be inserted through an insertion hole 4U of the upper screen 6U. A second lifting and lowering cord 3L (or 3U) of the plurality of lifting and lowering cords 3U, 3L is configured not to be inserted through the insertion hole 4U of the upper screen 6U.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a pleated screen in which a vertically foldable screen is suspended from a head box, and the screen is moved up and down to adjust the light collection amount.

  The pleated screen suspends and supports a screen that can be bent in the vertical direction from the head box, and the screen is moved up and down by an operation device to appropriately adjust the amount of light collection.

  In a pleated screen that generally supports one screen suspended from a head box, make this screen a draped cloth (light-shielding cloth) or a lace cloth (light-collecting cloth), and adjust the light amount by folding the screen Can.

  Also, as one type of pleated screen, a screen that can be folded in a zigzag in the vertical direction is composed of an upper screen and a lower screen of different fabrics, and the lower edge of the upper screen and the upper edge of the lower screen are taken on the middle rail In some cases, the intermediate rail and the bottom rail are suspended and supported by independent lifting cords.

  In a pleated screen having such an upper screen and a lower screen, the upper screen is a light-collecting fabric and the lower screen is a light-shielding fabric, or conversely, the upper screen is a light-shielding fabric and the lower screen is a light-absorbing fabric Etc, various combinations of fabrics can be separated by the middle rail. Then, the light collection amount can be adjusted by folding one or both of the upper screen and the lower screen, and the degree of freedom of the light collection adjustment is enhanced. Further, the number of intermediate rails is not limited to one, and a plurality of intermediate rails may be combined with three or more screens.

  By the way, for the upper and lower raising and lowering cords for raising and lowering the upper screen and the lower screen, one insertion hole is provided in the upper screen, and the upper and lower raising and lowering cords are provided for the one insertion hole. The pleat screen which penetrates two is disclosed (for example, refer to patent documents 1).

  In addition, with regard to the upper and lower raising and lowering cords for raising and lowering the upper screen and the lower screen, respectively, two insertion holes are provided in parallel in the left and right direction in the upper screen There is disclosed a pleated screen through which the cord and the lower lifting cord are respectively inserted (see, for example, Patent Document 2).

JP 2002-332785 A Japanese Patent Application Laid-Open No. 2002-115474

  As described above, in the technique of Patent Document 1, when constructing the pleated screen having the upper screen and the lower screen, the upper screen is provided with one insertion hole, and the upper lifting cord and the lower side are made to this one insertion hole. Two side lifting cords are inserted.

  Further, in the technique of Patent Document 2, when constructing a pleated screen having an upper screen and a lower screen, two through holes are provided in parallel in the left and right direction in the upper screen, and the upper side is provided for each of the two through holes. The raising and lowering cord and the lower raising and lowering cord are inserted respectively.

  However, in these techniques, the size and the number of the through holes in the upper screen are increased, so that there is a problem that the light leakage generated from these through holes becomes large.

  Therefore, in a pleated screen having an upper screen and a lower screen, a technique for suppressing light leakage arising from the through holes provided in the screen is desired. Further, depending on the arrangement of the lifting cords, the design may be impaired, and a technique for constructing a pleated screen having high designability is desired.

  SUMMARY OF THE INVENTION In view of the above-mentioned problems, the present invention is to provide a pleated screen which suppresses light leakage and, in particular, has high designability.

  The pleated screen according to the first aspect of the present invention is a pleated screen comprising an upper screen and a lower screen that can be individually lifted and lowered by a plurality of lifting cords, the pleated screen for raising and lowering one of the upper screen and the lower screen. The lifting cord of 1 is inserted into the insertion hole formed in the upper screen, and the second lifting cord for raising and lowering the other of the upper screen and the lower screen is inserted into the insertion hole formed in the upper screen It is characterized in that it is configured not to let it go.

  In the pleated screen according to the first aspect of the present invention, the second lifting cord is inserted into an insertion hole formed in the lower screen.

  Further, in the pleated screen according to the first aspect of the present invention, the diameter of the insertion hole is set to 1.8 mm as a prescribed value, and each of the first lifting cord and the second lifting cord is specified as 0.7 mm. It is characterized by having done.

  In the pleated screen according to the first aspect of the present invention, the insertion holes formed in the upper screen are formed at positions offset from a substantially central portion in the front-rear direction of the upper screen.

  In the pleated screen according to the first aspect of the present invention, the insertion holes formed in the upper screen are formed at positions offset in the front-rear direction with respect to the insertion holes formed in the lower screen. Do.

  In the pleated screen according to the first aspect of the present invention, a pitch holding cord for holding the upper screen at a predetermined pitch is provided, and the second lifting cord is inserted through an annular support cord provided on the pitch holding cord. It is characterized by

  Furthermore, the pleated screen according to the second aspect of the present invention is a pleated screen comprising an upper screen and a lower screen that can be individually lifted and lowered by a plurality of lifting cords, the first lifting cord for lifting and lowering the upper screen A second lifting cord for inserting the insertion hole formed in the upper screen and for moving the lower screen up and down is not inserted in the insertion hole formed in the upper screen, and from the center in the front-rear direction width of the lower screen It is made to insert in the penetration hole formed in the position offset behind, It is characterized by the above-mentioned.

  Furthermore, the pleated screen of the third aspect according to the present invention is a pleated screen comprising an upper screen and a lower screen that can be individually lifted and lowered by a plurality of lifting cords, the first lifting cord for lifting and lowering the upper screen A second lifting cord for inserting the insertion hole formed in the upper screen, offset the lower screen backward from the upper screen, and raising and lowering the lower screen is in the insertion hole formed in the upper screen It is characterized in that it is inserted into an insertion hole formed in the lower screen without being inserted.

  Furthermore, the pleated screen of the fourth aspect according to the present invention is a pleated screen comprising an upper screen and a lower screen that can be individually lifted and lowered by a plurality of lifting cords, the first lifting cord for lifting and lowering the upper screen The lower screen is formed to have a greater width in the front-rear direction than the upper screen, and a second lifting cord for raising and lowering the lower screen is formed on the upper screen. It is characterized in that it is inserted into the insertion hole formed in the lower screen without being inserted into the insertion hole.

  Furthermore, the pleated screen according to the fifth aspect of the present invention is a pleated screen comprising an upper screen and a lower screen that can be individually lifted and lowered by a plurality of lifting cords, the first lifting cord for lifting and lowering the upper screen The second lifting cord for inserting the insertion hole formed in the upper screen and for moving the lower screen up and down is not inserted in the insertion hole formed in the upper screen, but in multiple stages in the vertical direction of the lower screen It is characterized in that it is inserted into an insertion hole formed in an engagement piece provided at a rear end portion of each step bent in a zigzag shape.

  Furthermore, the pleated screen of the sixth aspect according to the present invention is a pleated screen comprising an upper screen and a lower screen which can be individually lifted and lowered by a plurality of lifting cords, the first lifting cord for lifting and lowering the upper screen The second lifting cord for inserting the insertion hole formed in the upper screen and for moving the lower screen up and down is not inserted in the insertion hole formed in the upper screen, but in multiple stages in the vertical direction of the lower screen The insertion holes formed in each step folded in a zigzag shape are inserted, and the insertion holes of each step in the lower screen are formed at a position offset from the rear to the front as going from the top to the lower side. It is characterized by including an insertion hole.

  Furthermore, the pleated screen according to the seventh aspect of the present invention is a pleated screen comprising an upper screen and a lower screen that can be individually lifted and lowered by a plurality of lifting cords, the first lifting cord for lifting and lowering the upper screen The second lifting cord for inserting the insertion hole formed in the upper screen and for moving the lower screen up and down is not inserted in the insertion hole formed in the upper screen, but in multiple stages in the vertical direction of the lower screen It is characterized in that the rear of a predetermined level including the uppermost level is hung down from each of the levels bent in a zigzag shape, and is inserted into an insertion hole provided below the predetermined level.

  Furthermore, the pleated screen according to the eighth aspect of the present invention is a pleated screen comprising an upper screen and a lower screen which can be individually lifted and lowered by a plurality of lifting cords, wherein the first lifting cord is for lifting the upper screen. The second lifting cord for inserting the insertion hole formed in the upper screen and for moving the lower screen up and down does not insert the insertion hole formed in the upper screen, and the front and rear direction of the lower screen It is characterized in that it is inserted through an insertion hole formed at the center.

  Furthermore, a pleated screen according to a ninth aspect of the present invention is a pleated screen comprising an upper screen and a lower screen which can be individually lifted and lowered by a plurality of lifting cords, wherein the first lifting cord is for lifting the upper screen. The second lifting cord for lifting and lowering the upper screen is configured to be capable of moving up and down the upper screen without being inserted into the insertion hole formed in the upper screen, and the insertion being formed in the upper screen It is characterized in that the lower screen can be moved up and down by inserting the through hole formed in the hole and the lower screen.

  Further, in the pleated screen of the ninth aspect according to the present invention, the second lifting cord is vertically straight without bending with respect to the insertion hole formed in the upper screen and the insertion hole formed in the lower screen It is characterized in that it is inserted so as to drop in the direction.

  Further, in the pleated screen according to the ninth aspect of the present invention, the second lifting cord is inserted into an insertion hole formed in front of a center in the front-rear direction of the lower screen or behind a center of the lower screen. It features.

  Further, in the pleated screen of the ninth aspect according to the present invention, the first lifting and lowering cords are suspended so as to form a pair before and after the upper screen.

  According to the present invention, light leakage can be suppressed, and in particular, a pleated screen with high designability can be configured.

It is a front view which shows schematic structure of the pleat screen of 1st Embodiment by this invention. (A), (b) is the front view and side view which show partially schematic structure of the pleat screen of 1st Embodiment by this invention, respectively. (A), (b) is a schematic enlarged side view of the periphery of the screen of one example of the pleated screen of the first embodiment according to the present invention and a schematic enlarged side view of the periphery of the screen of the further modification. It is. (A), (b) is the front view and side view which show partially the schematic structure of the pleat screen of the comparative example based on a prior art, respectively and contrastably with 1st Embodiment by this invention. (A) and (b) are enlarged side views around the upper screen of one example of the pleated screen according to the first embodiment of the present invention (the support cord of the pitch holding cord and the fabric of the upper screen are in contact) FIG. 10 is an enlarged side view of the upper screen periphery (the support cord of the pitch holding cord and the fabric of the upper screen are in contact) in a pleated screen of a comparative example based on the prior art. (A), (b) is an enlarged side view of the upper screen of one example of the pleated screen according to the first embodiment of the present invention (the support cord of the pitch holding cord and the fabric of the upper screen are not in contact) FIG. 8 is an enlarged side view of the upper screen periphery (the support cord of the pitch holding cord and the fabric of the upper screen are not in contact with each other) in a pleated screen of a comparative example based on the prior art. (A), (b) and (c) are respectively the upper screen periphery of the modification in the pleated screen of the first embodiment according to the present invention (the support cord of the pitch holding cord and the fabric of the upper screen are not in contact) It is an enlarged side view. (A), (b) is an enlarged side view around a screen of one example in a pleated screen of a second embodiment according to the present invention, and an enlarged side view around a screen of a modification thereof. (A), (b) is an enlarged side view of the periphery of a screen of one example in a pleated screen of a 3rd embodiment by the present invention, and an enlarged side view of the periphery of a screen of the modification, respectively. (A), (b) is an enlarged side view of the periphery of a screen of one example in a pleated screen of a 4th embodiment by the present invention, and an enlarged side view of the periphery of a screen of the modification, respectively. (A), (b) is a schematic enlarged side view of the periphery of the screen of one example of the pleated screen of the fourth embodiment according to the present invention and a schematic enlarged side view of the periphery of the screen of the further modification. It is. (A), (b) is a schematic enlarged side view of a screen periphery in a pleated screen of Example 1 and Example 2 in still another embodiment according to the present invention, respectively. (A), (b) is a schematic enlarged side view of the periphery of the screen in the pleated screen of Example 3 and Example 4 in still another embodiment according to the present invention, respectively. (A), (b) is a schematic enlarged side view of the periphery of the screen in the pleated screen of Example 5 and Example 6 in still another embodiment according to the present invention, respectively. (A) to (e) are schematic enlarged side views of the periphery of the screen in the pleated screen shown as a representative example for comprehensively describing the pleated screen of each embodiment according to the present invention, including the modified examples. (A) to (e) are schematic enlarged side views of the periphery of the screen in the pleated screen shown as a representative example for comprehensively describing the pleated screen of each embodiment according to the present invention, including the modified examples. (A) to (e) are schematic enlarged side views of the periphery of the screen in the pleated screen shown as a representative example for comprehensively describing the pleated screen of each embodiment according to the present invention, including the modified examples.

  Hereinafter, a pleated screen of each embodiment according to the present invention will be described with reference to the drawings. In the specification of the present invention, with respect to the front view of the pleated screen shown in FIG. 1, the upper side and the lower side are respectively in the upper direction (or upper side) and the lower direction (or lower side) according to the hanging direction of the screen. The left side of the illustrated screen is defined as the left side of the pleated screen and the right side of the illustrated screen is defined as the right side of the pleated screen. Moreover, let the side which visually recognizes the front view of FIG. 1 be the front side (room side), and let the other side be a rear side (the outdoor side).

First Embodiment
First, with reference to FIGS. 1 and 2, a pleated screen according to a first embodiment having an upper screen 6U and a lower screen 6L will be described. FIG. 1 is a front view showing a schematic configuration of a pleated screen according to a first embodiment of the present invention. Fig.2 (a), (b) is the front view and side view which show partially schematic structure of the pleat screen of 1st Embodiment by this invention, respectively.

  In the pleated screen of the first embodiment, an upper screen 6U that can be folded in a zigzag form from the head box 1 is suspended and supported, and the lower end of the screen 6U is attached to the upper surface of the intermediate rail 5.

  The upper end of the lower screen 6L, which can be similarly folded in a zigzag, is attached to the lower surface of the intermediate rail 5, and the lower end of the lower screen 6L is attached to the bottom rail 7.

  First and second operation cords 9L and 9U are suspendedly supported at both ends of the head box 1, respectively. The first operation code 9L causes a plurality of (two in this example) lower lifting cords 3L for lifting and lowering the bottom rail 7 to be drawn out from the cord outlet 1a of the head box 1 or pulled into the head box 1 It is an operation. The second operation code 9U is an operation for drawing a plurality (two in this example) of upper and lower lifting cords 3U for lifting and lowering the intermediate rail 5 from the cord outlet 1b of the head box 1 or pulling it into the head box 1 To do.

  One end of each lower lifting cord 3L is connected to the first operation cord 9L via the code equalizer 8L, and the other end of each lower lifting cord 3L is a stopper device (not shown) provided on the head box 1 It is guided through the head box 1 and turned downward via a support member 10 (see FIG. 2 (b)) for supporting a pulley 10a disposed in the head box 1 at an appropriate position. Then, the other end of each lower lifting cord 3L turned downward is bypassed from the head box 1 so as to pass through the back surface of the intermediate rail 5 without being inserted into the insertion hole 4U provided in the upper screen 6U. The lower surface of the upper screen 6U is hung down and inserted into the insertion hole 4L provided in the lower screen 6L so as to penetrate the lower screen 6L and be connected to the bottom rail 7.

  Therefore, if the lower lifting cord 3L is pulled out from the head box 1 by operating the first operation code 9L, the bottom rail 7 is pulled up, and the first operation code 9L is released to operate the lock of the stopper device. For example, the bottom rail 7 can be suspended at a desired position by preventing the lower lifting cord 3L from being drawn into the head box 1.

  Further, after operating the first operation code 9L to pull out the lower lifting cord 3L slightly from the head box 1 and releasing the lock of the stopper device, the lower side is released by releasing the first operation code 9L. The lifting cord 3L can be drawn into the head box 1, and the weight of the bottom rail 7 can lower the bottom rail 7.

  One end of each upper lifting cord 3U is connected to the second operation cord 9U via a code equalizer 8U, and the other end of each upper lifting cord 3U is connected via a stopper device (not shown) provided on the head box 1 It is guided in the head box 1 and turned downward via a support member that supports a pulley disposed in place in the head box 1. The other end of each of the upper and lower raising and lowering cords 3U turned downward is inserted into an insertion hole 4U provided in the upper screen 6U to penetrate the upper screen 6U and be connected to the intermediate rail 5.

  Therefore, if the second raising and lowering cord 3U is pulled out of the head box 1 by operating the second operation cord 9U, the intermediate rail 5 is pulled up, and the second operation cord 9U is released to operate the lock of the stopper device. The intermediate rail 5 can be suspended at a desired position by preventing the upper lifting cord 3U from being drawn into the head box 1.

  Further, after operating the second operation code 9U to slightly pull out the upper raising and lowering cord 3U from the head box 1 and releasing the lock of the stopper device, the upper raising and lowering cord is released by releasing the second operation cord 9U. The 3U can be drawn into the head box 1 and the weight of the intermediate rail 5 can lower the intermediate rail 5.

  In the pleated screen of the first embodiment configured as described above, the middle rail 5 is pulled up immediately below the head box 1, and the upper screen 6U is folded between the head box 1 and the middle rail 5, and the bottom rail When 7 is lowered, the lower screen 6L is suspended from the head box 1.

  Further, when the middle rail 5 is lowered to the lower side of the bottom rail 7 with the bottom rail 7 lowered to the lower limit, the lower screen 6L is folded between the middle rail 5 and the bottom rail 7 and the head box 1 and the middle The upper screen 6U is suspended and supported between the rail 5 and the upper screen 6U. Therefore, for example, if the upper screen 6U is made of a light-collecting material and the lower screen 6L is made of a light-shielding material, it is possible to increase the degree of freedom of adjusting the light collection amount.

  Then, if the bottom rail 7 is lowered to the lower limit and the intermediate rail 5 is positioned between the head box 1 and the bottom rail 7, it is possible to collect the soft light transmitted through the upper screen 6 U as the light collecting fabric. it can.

  Further, when the bottom rail 7 is pulled up to the upper limit and opened, the first operation cord 9L is operated to pull up the bottom rail 7 without pulling up the intermediate rail 5, and the space between the head box 1 and the bottom rail 7 The upper screen 6U and the lower screen 6L can be folded.

  As shown in FIG. 2B, the pitch holding cord 11 is hung from the head box 1 at the rear of the upper lifting cord 3U, that is, on the outdoor side and attached to the intermediate rail 5, and the pitch from the intermediate rail 5 The holding cord 12 is hung down and attached to the bottom rail 7.

  An upper lifting cord 3U and a lower lifting cord 3L are respectively inserted in annular support cords 11a and 12a provided in large numbers at equal intervals in each of the pitch holding cords 11 and 12, respectively. Then, when the middle rail 5 is lowered to stretch the upper screen 6U, the upper screen 6U is supported by the support cords 11a, and the folds of the upper screen 6U are held at substantially equal intervals. Similarly, when the bottom rail 7 is lowered to stretch the lower screen 6L, the lower screen 6L is supported by the support cords 12a, and the folds of the lower screen 6L are held at substantially equal intervals.

  By the way, in the pleated screen of the first embodiment shown in FIG. 1, as shown in FIG. 2 (b), the lower lifting cord 3L is not inserted into the insertion hole 4U provided in the upper screen 6U, The rear surface of the screen 6U is hung down and inserted into an insertion hole 4L provided in the lower screen 6L so that the lower screen 6L is penetrated and connected to the bottom rail 7.

  That is, as shown in FIGS. 2A and 2B, the upper screen 6U is provided with only the insertion hole 4U for inserting the upper lifting cord 3U whose end is connected to the intermediate rail 5 . Thereby, in the upper screen 6U, it is unnecessary to arrange the insertion hole for inserting the lower lifting cord 3L to suppress the light leakage, and further, as understood from the front view shown in FIG. The appearance is enhanced by arranging the upper lifting cord 3U and the lower lifting cord 3L in a straight line.

  In the example of the present embodiment, as shown in FIG. 3A, the lower elevating cord 3L hangs the back surface of the upper screen 6U without being inserted into the insertion hole 4U provided in the upper screen 6U. Although the configuration is as shown in FIG. 3B, the front surface of the upper screen 6U is suspended without being inserted into the insertion hole 4U provided in the upper screen 6U, and the upper elevating cord 3U in a front view The lower lifting cord 3L can be arranged in a straight line to enhance the appearance.

  Furthermore, in the pleated screen of the first embodiment shown in FIG. 1, as shown in FIG. 2A, the upper and lower lifting cords 3U and 3L are inserted into the upper screen 6U and the lower screen 6L, respectively. The size of the insertion holes 4U and 4L provided for this purpose is made as small as possible so that there is no space for other cords and the like to enter other than one each of the upper and lower lifting cords 3U and the lower lifting cord 3L. Thus, light leakage from the insertion holes 4U and 4L is reduced.

  Furthermore, in the pleated screen of the first embodiment, both the cross-sectional areas of the upper and lower lifting cords 3U and the lower lifting cord 3L and the areas of the insertion holes 4U and 4L are smaller than those of the conventional technique. Thereby, the movement of the upper screen 6U and the lower screen 6L at the time of raising and lowering is preferably restricted in the vertical direction, and the displacement deviation width (for example, the deviation in the horizontal direction) of the upper screen 6U and the lower screen 6L at the time of raising and lowering The entire screen can be maintained in good looking condition.

  More specifically, the configuration around the screen of the pleated screen of the first embodiment will be described in comparison with the comparative example with reference to FIGS. 2 and 4 to 6. The configuration around the screen of the pleated screen of the first embodiment is as shown in FIG. 2 described above, while FIGS. 4 (a) and 4 (b) are for comparison with the first embodiment according to the present invention. The comparative example based on a prior art is shown. And FIG.5 and FIG.6 has each shown the enlarged side view of the upper screen periphery which contrasts the structure of 1st Embodiment by this invention, and the structure of the comparative example.

  First, referring to FIG. 2A, in the pleated screen according to the first embodiment of the present invention, the upper screen 6U (lower screen 6L) (lower screen 6L) is extended in a state in which the foldable upper screen 6U (also the lower screen 6L) is stretched. The same applies to the upper screen 6U which is inclined at approximately 45 ° from the horizontal and the size of the insertion hole 4U is formed by the round hole of the hole diameter D (in the broken line circle), similarly, the size of the insertion hole 4L When the lower screen 6L configured by round holes having the hole diameter D is viewed from the surface of the fabric (in the broken line circle), the lifting cord 3 of the cord diameter (cross-sectional diameter) d having a round cross section has a minor diameter d1 (= cord diameter d) and an elliptical cross section with a major diameter d2 (≒ d × √2). The gap between the upper lifting cord 3U and the insertion hole 4U or the clearance between the lower lifting cord 3L and the insertion hole 4L is a factor of light leakage, but the pleat screen of the first embodiment according to the present invention Then, the gap is smaller than in the prior art. Thus, light leakage from the insertion holes 4U and 4L is reduced. Further, in the pleated screen according to the first embodiment of the present invention, as shown in FIG. 2 (b), through the respective through holes 4U and 4L provided in the approximate center of the front and rear direction width of the upper screen 6U and the lower screen 6L. As shown, only the upper lifting cord 3U penetrates the upper screen 6U, and only the lower lifting cord 3L penetrates the lower screen 6L. In this example, the upper and lower lifting cords 3U and the lower lifting cord 3L hang down substantially at the center of the longitudinal width (width 2 × a shown) of the intermediate rail 5.

  On the other hand, as shown in FIG. 4A, in the pleated screen according to the comparative example based on the prior art, the upper screen 6U (the lower screen 6L) (also the lower screen 6L) is similarly stretched. The same applies to the case in which the upper and lower raising and lowering cords 3U and 3L of the cord diameter (cross-sectional diameter) d 'are inserted so that they are inclined at approximately 45 ° from horizontal and enlarged as fabric surface view. The diameter of the insertion hole 4L through which the lower lifting cord 3L of the cord diameter (cross-sectional diameter) d 'is inserted is constituted by the round hole of the hole diameter D'. There is. Here, when the upper screen 6U and the lower screen 6L in which the insertion holes 4U and 4L are formed with the respective hole diameters D ′ ′ and D ′ are respectively viewed in a material plane (in a broken line circle), the cord diameter (cross section The lifting cord 3 of the diameter d 'has an elliptical cross-sectional shape with a minor diameter d1' (= cord diameter d ') and a major diameter d2' (≒ d 'x 2 2). And although the clearance between the lifting cord 3 and the insertion hole 4 causes the light leakage, in this comparative example based on the conventional technique, in comparison with the pleated screen of the first embodiment according to the present invention shown in FIG. , It can be seen that the gap is large. In the comparative example based on this conventional technique, as shown in FIG. 4B, the upper side with respect to the upper screen 6U passes through the respective through holes 4U provided in the approximate center of the width in the front-rear direction of the upper screen 6U. Both the lifting cord 3U and the lower lifting cord 3L are penetrated, and only the lower lifting cord 3L is penetrated to the lower screen 6L. In this example, the upper and lower lifting cords 3U and the lower lifting cord 3L hang down substantially at the center of the longitudinal width (width 2 × a shown) of the intermediate rail 5. For this reason, a through passage 5a through which the lower lifting cord 3L penetrates is formed substantially at the center of the longitudinal width (width 2 × a shown) of the intermediate rail 5.

  By the way, in the pleated screen using the pitch holding cords 11 and 12, there are two states, a contact state where the support cord 11a of the pitch holding cord 11 and the fabric of the upper screen 6U come into contact and a non-contact state where the support cord 11a does not touch. There are two states, a contact state in which the support cord 12a of the holding cord 12 and the fabric of the upper screen 6L are in contact, and a non-contact state in which the support cord 12a and the fabric of the upper screen 6L are in contact. The upper screen 6U will be representatively described below. In FIG. 5, the configuration of the first embodiment according to the present invention when the support cord 11a of the pitch holding cord 11 is in contact with the outer screen of the upper screen 6U at the position of the outdoor fold (the illustrated "contact point") The enlarged side view of the periphery of upper screen 6U which contrasts with the composition of a comparative example is shown. Further, in FIG. 6, the configuration of the first embodiment according to the present invention when the support cords 11a of the pitch retention cords 11 are not in contact at the position of the outer fold of the upper screen 6U and the comparison example thereof. FIG. 18 shows an enlarged side view of the vicinity of the upper screen 6U in contrast to the configuration of FIG.

  At this time, in the configuration of the first embodiment according to the present invention, as shown in FIGS. 5 (a) and 6 (a) with respect to the upper screen 6U, the upper lifting cord 3U of the cord diameter (cross sectional diameter) d. Is inserted into the insertion hole 4U of the hole diameter D, regardless of whether or not the support cord 11a of the pitch holding cord 11 and the fabric (dough thickness sd) of the upper screen 6U are in contact with each other. Annular support cords 11a (round cross-sectional diameter kd) provided in large numbers at equal intervals on the pitch holding cords 11 having a minor diameter pd1 and a major diameter pd2 as a cord cross section The bending diameter bd of the tip (bent portion) of Similarly to the lower screen 6L, regardless of whether or not the support cord 12a of the pitch holding cord 12 and the fabric (dough thickness sd) of the lower screen 6L are in contact with each other, the insertion hole 4L and the upper lifting cord Tip of the annular support cord 12a (round cross-sectional diameter kd) provided in large numbers at equal intervals on the pitch holding cord 12 having a minor diameter pd1 × a major diameter pd2 as a cord cross section Is smaller than the bending diameter bd of).

  Furthermore, the hole diameter D of the insertion hole 4U according to the present invention is smaller than the major diameter pd2 of the pitch holding cord 11 as a cross section of the cord. Similarly, the hole diameter D of the insertion hole 4L according to the present invention is smaller than the major diameter pd2 of the pitch holding cord 12 as a cross section of the cord. Further, the gap in the front-rear direction between the insertion hole 4U and the upper elevating cord 3U is smaller than twice the minor diameter pd1 of the bendable pitch holding cord 11 as the cord cross section. Similarly, the gap in the front-rear direction between the insertion hole 4L and the lower lifting cord 3L is smaller than twice the minor diameter pd1 of the bendable pitch holding cord 12 as the cord cross section. Further, the cord diameter d of the upper lifting cord 3U according to the present invention is reduced in diameter with respect to any of the minor diameter pd1 and the major diameter pd2 as the cord cross section of the pitch holding cord 11. Similarly, the cord diameter d of the lower lifting cord 3L according to the present invention is reduced in diameter for both the minor diameter pd1 and the major diameter pd2 as the cord cross section of the pitch holding cord 12. Further, the light leakage suppressing effect may be compared in a state where the screen 6 is inclined at approximately 45 ° from the horizontal, and the hole diameter D of the insertion holes 4U and 4L according to the present invention is the upper and lower screens 6U and 6L. As shown in FIGS. 5 (a) and 6 (a), the diameters (45 ° projected diameter Da) projected in the vertical direction or horizontal direction when inclined 45 ° from the horizontal are the upper and lower lifting cords 3U and 3L respectively. The cord diameter d is twice or less.

  In the configuration of the first embodiment according to the present invention, the same applies to the lower screen 6L in which only the upper lifting cord 3L of the cord diameter (cross-sectional diameter) d is inserted into the insertion hole 4L of the hole diameter D.

  That is, with such a configuration, it is intended to suppress light leakage generated from the insertion hole 4U through which the upper side elevation cord 3U is inserted and light leakage generated from the insertion hole 4L through which the lower side elevation cord 3L is inserted.

(Example)
As a more specific suitable value in the example of the upper screen 6U shown in FIGS. 5A and 6A as a representative, the cord diameter d of the upper lifting cord 3U is φ0.7 mm, and the hole diameter D of the insertion hole 4U Is φ1.8 mm. The minor diameter pd1 × the major diameter pd2 as the cord cross section of the pitch holding cord 11 is 0.8 × 2.0 mm, which is conventionally used, and the cord diameter (cross sectional diameter) kd of the annular support cord 11a having a round cross section The bending diameter bd of the tip (bent portion) of the support cord 11a is approximately 1.5 mm in the above contact state and approximately 3 mm in the non-contact state. The fabric thickness sd of the screen 6 is about 0.2 mm conventionally used.

  Similarly, in the lower screen 6L, the cord diameter d of the lower lifting cord 3L can be φ0.7 mm, and the hole diameter D of the insertion hole 4L can be φ1.8 mm. The minor diameter pd1 × the major diameter pd2 is 0.8 × 2.0 mm, which is conventionally used, and the cord diameter (cross-sectional diameter) kd of the annular support cord 11a having a round cross section is φ0.2 mm, and the support cord 11a is The bending diameter bd of the tip (bent portion) of the above is approximately 1.5 mm in the above-mentioned contact state and approximately 3 mm in the non-contact state. The fabric thickness sd of the screen 6 is about 0.2 mm conventionally used.

  According to the present embodiment, when the upper lifting cord 3U of φ0.7 mm as the cord diameter d is inserted in the hole diameter D (φ1.8 mm) of the insertion hole 4U, the fabric surface view shown in FIG. As shown, the clearance between the insertion hole 4U and the upper elevating cord 3U is approximately 0.81 mm (= D (1.8 mm)-d2 (0.7 x 2)) to 1.10 mm in the front-rear direction. When it is in the above contact state as the bending diameter bd of the tip (bent portion) of the annular support cord 11a which is approximately = D (1.8 mm)-d1 (0.7) and extends behind it. It becomes smaller than any of 5 mm and approximately 3 mm in the non-contact state. For this reason, the support cord 11a can not enter the insertion hole 4U under any circumstances (it is not caught) while aiming to suppress light leakage generated from the insertion hole 4U, that is, by folding or stretching the upper screen 6U. There will be no obstruction to the movement when moving up and down.

  Further, the hole diameter D (φ 1.8 mm) of the insertion hole 4 U is smaller than the major diameter pd 2 (2.0 mm) as the cord cross section of the pitch holding cord 11. Then, in a state where the upper lifting cord 3U of φ0.7 mm as the cord diameter d is inserted into the hole diameter D (φ1.8 mm) of the insertion hole 4U, the gap between the insertion hole 4U and the upper lifting cord 3U is As described above, the length becomes approximately 0.81 mm to 1.10 mm in the front-rear direction, which is smaller than twice the minor diameter pd1 (0.8 mm) as the cross section of the bendable pitch holding cord 11 There is. For this reason, while aiming to suppress light leakage generated from the insertion hole 4U, the bendable pitch holding cord 11 can not enter the insertion hole 4U under any circumstances (it is not caught), that is, the upper screen 6U There is no obstruction to the movement at the time of raising and lowering by folding or extending.

  As described above, the insertion hole 4U is formed in a size such that the cords other than the upper lifting cord 3U to be inserted (in this example, the pitch holding cord 11 and the support cord 11a thereof) can not enter. Similarly, the insertion hole 4L is formed in a size such that a cord other than the lower lifting cord 3L to be inserted (in this example, the pitch holding cord 12 and its supporting cord 12a) can not enter.

  Further, although the hole diameter D (φ 1.8 mm) of the insertion hole 4U is larger than the cord diameter d of the upper side lifting cord 3U, the 45 ° projection diameter Da (1.8 / √2 ≒ 1.27 mm) of the insertion hole 4U is Since the diameter is equal to or less than twice the cord diameter d (φ0.7 mm) of the upper lifting cord 3U, the smaller the cord diameter d of the upper lifting cord 3U is, the smaller it becomes. In other words, the cord diameter d of the upper lifting cord 3U according to the present invention can be reduced in diameter with respect to both the minor diameter pd1 and the major diameter pd2 as the cord cross section of the pitch holding cord 11. As described above, since the insertion of the upper lifting cord 3U into the insertion hole 4U is maintained while suppressing the light leakage generated from the insertion hole 4U, both the cross sectional area of the upper lifting cord 3U and the area of the insertion hole 4U Is smaller than conventional techniques. By this, the movement of the upper screen 6U at the time of raising and lowering is preferably restricted in the vertical direction, and the movement deviation width (for example, the deviation in the horizontal direction) of the upper screen 6U at the time of raising and lowering becomes smaller. It can be maintained. The same applies to the lower lifting cord 3L and the insertion hole 4L.

(Comparative example)
On the other hand, as shown in FIGS. 5B and 6B, in the configuration according to the comparative example, each cord diameter d ′ of the upper lifting cord 3U and the lower lifting cord 3L (shown in FIG. 4A) The minor diameter d1 'in ground view is equal to φ1.2 mm, the hole diameter D ′ ′ of the insertion hole 4U is φ5.0 mm, and the hole diameter D ′ of the insertion hole 4L is φ3.5 mm. The minor diameter pd1 × the major diameter pd2 of the pitch holding cord 11 as a cord cross section is 0.8 × 2.0 mm, and the cord diameter (cross sectional diameter) kd of the annular support cord 11a having a round cross section is φ0.2 mm The bending diameter bd of the tip (bent portion) of the support cord 11a is approximately 1.5 mm in the above contact state and approximately 3 mm in the non-contact state. The fabric thickness sd of the screen 6 is approximately 0.2 mm. In the configuration according to the comparative example, only the lower lifting cord 3L is engaged and inserted into the support cord 11a.

Therefore, in a state where the upper elevating cord 3U and the lower elevating cord 3L of φ 1.2 mm as the cord diameter d are inserted in the hole diameter D ′ ′ (φ 5.0 mm) of the insertion hole 4U according to the comparative example, FIG. The gap between the insertion hole 4U and the upper and lower lifting cords 3U and 3L is approximately 1.61 mm (= D '(5.0 mm)-2 x) in the front-rear direction, as shown in the fabric surface view shown in Fig. An annular d2 '(2 x 1.2 x 2)) to 2.60 mm (= D' (5.0 mm)-2 x d 1 '(2 x 1.2)) The bending diameter bd of the tip (bent portion) of the support cord 11a is larger than approximately 1.5 mm in the contact state.
Further, in a state where the lower lifting cord 3L of φ1.2 mm as the cord diameter d is inserted in the hole diameter D ′ (φ3.5 mm) of the insertion hole 4L according to the comparative example, the material surface view shown in FIG. The clearance between the insertion hole 4L and the lower lifting cord 3L is approximately 1.80 mm (= D ′ (3.5 mm) −d2 ′ (1.2 × √2)) in the front-rear direction, as shown in FIG. It becomes about 2.30 mm (= D '(3.5 mm)-d1' (1.2)), and in the above contact state as the bending diameter bd of the tip (bending part) of the annular support cord 12a extending behind it It is larger than about 1.5 mm at one time.
For this reason, the light leakage which arises from penetration hole 4U and 4L becomes large, support cord 11a can penetrate into penetration hole 4U, and support cord 12a can penetrate into penetration hole 4L (it may be hooked), ie, upper screen 6U or The folding or stretching of the lower screen 6L may inhibit the operation when moving up and down.

  In addition, the hole diameter D ′ ′ (φ 5.0 mm) of the insertion hole 4U and the hole diameter D ′ (φ 3.5 mm) of the insertion hole 4 L according to the comparative example are the cord cross sections of the pitch holding cords 11 and 12 that can be bent. The diameter is larger than twice the minor diameter pd1 × the major diameter pd2 (φ 1.0 mm). The clearance between the insertion hole 4U and the upper and lower lifting cords 3U and 3L is approximately 1.61 mm to 2.60 mm in the front-rear direction as described above, and the insertion hole 4L and the lower lifting cord 3L The gap between the two is approximately 1.80 mm to 2.30 mm in the front-rear direction as described above, and 2 of the minor diameter pd1 (0.8 mm) as the cord cross section of the bendable pitch holding cords 11 and 12 It is more than doubled. For this reason, the light leakage which arises from penetration hole 4U and 4L becomes large, and each bendable pitch holding cords 11 and 12 can penetrate into penetration hole 4U and 4L, respectively (it may be hooked), ie, the upper part The folding or stretching of the screen 6U or the lower screen 6L may interfere with the lifting and lowering operations.

  Furthermore, the hole diameter D ′ ′ (φ 5.0 mm) of the insertion hole 4U according to the comparative example and the hole diameter D ′ (φ 3.5 mm) of the insertion hole 4 L are as shown in FIG. The 45 ° projection diameter Da ′ ′ (5.0 / √2 ≒ 3.54 mm) of the insertion hole 4U is larger than twice the cord diameter d ′ (φ1.2 mm) of the upper lifting cord 3U, and similarly the insertion hole 4L Since the 45 ° projection diameter Da ′ (3.5 / √2 ≒ 2.47 mm) of this is larger than twice the cord diameter d ′ (φ 1.2 mm) of the lower lifting cord 3L, the insertion hole 4U, Light leakage arising from 4L becomes large, and both the cross sectional areas of the upper and lower lifting cords 3U and the lower lifting cord 3L and the areas of the corresponding insertion holes 4U and 4L are larger than those of the embodiment according to the present invention Shift width of the upper screen 6U or lower screen 6L of the Direction deviation) is relatively large.

  As described above, in the pleated screen according to the first embodiment shown in FIGS. 1 and 2, the insertion holes provided for inserting only the upper and lower lifting cords 3U and 3L into the upper screen 6U and the lower screen 6L, respectively. The size of 4U and 4L is so small that there is no space for other cords and the like besides one for each of the upper and lower lifting cords 3U and lower lifting cord 3L. It is possible to improve and reduce the light leakage generated from the insertion holes 4U and 4L.

  Furthermore, in the pleated screen of the first embodiment, both the cross-sectional areas of the upper and lower lifting cords 3U and the lower lifting cord 3L and the areas of the corresponding insertion holes 4U and 4L are smaller than those of the conventional technique. The movement of the upper screen 6U and the lower screen 6L during raising and lowering is preferably regulated in the vertical direction, and the displacement deviation width (for example, the deviation in the lateral direction) of the upper screen 6U and the lower screen 6L during raising and lowering becomes smaller. It will be possible to maintain the appearance of good appearance (improvement of dynamic design).

  Then, in the upper screen 6U, not only the provision of the insertion hole for inserting the lower lifting cord 3L is unnecessary, and light leakage is not only suppressed, but also as understood from the front view shown in FIG. By arranging the upper lifting cord 3U and the lower lifting cord 3L in a straight line, it is possible to enhance the aesthetic appearance (improvement of static design).

  In the example of the upper screen 6U shown in FIGS. 5 (a) and 6 (a), only the upper lifting cord 3U is engaged and inserted into the annular support cord 11a of the pitch holding cord 11, but 7A, the engagement piece 61 is formed on the back side of the upper screen 6U by welding or the like, and the lower lifting cord 3L is inserted into the insertion hole 62 provided in the engagement piece 61. It can be inserted and the pitch holding cord 11 can not be used. Thereby, it is possible to completely prevent the pitch holding cord 11 and the support cord 11a from invading the insertion hole 4U.

  Further, as in the second modification shown in FIG. 7B, the lower lifting cord 3L is inserted into the insertion hole 62 provided in the engagement piece 61, and the annular support cord 11a of the pitch holding cord 11 is located on the upper side. Both of the lifting cord 3U and the lower lifting cord 3L may be engaged and inserted. As a result, it is possible to prevent the bending diameter bd of the support cord 11a from being unnecessarily shortened, and it is possible to further suppress the penetration of the support cord 11a into the insertion hole 4U.

  7C, the lower lifting cord 3L is inserted into the insertion hole 62 provided in the engaging piece 61, and the annular support cord 11a of the pitch holding cord 11 is lowered. Only the side lifting cord 3L may be engaged and inserted. Thereby, shortening of the support cord 11a is possible, and it can be made to suppress further that the support cord 11a intrudes into the penetration hole 4U.

Second Embodiment
Next, with reference to FIG. 8, a pleated screen of a second embodiment having an upper screen 6U and a lower screen 6L will be described. The same reference numerals as in the first embodiment denote the same constituent elements.

  The pleat screen of the second embodiment shown in FIG. 8 is a second embodiment in that the position of the insertion hole 4U provided in the upper screen 6U is offset to the indoor side as compared with the insertion hole 4L provided in the lower screen 6L. The other points are the same as in the first embodiment.

  That is, as shown in FIG. 8B, the lower raising and lowering cord 3L inserted in the insertion hole 4L provided in the approximate center of the width of the lower screen 6L in the front-rear direction is the head box as in the first embodiment. The rear surface of the upper screen 6U is suspended by being diverted to pass through the back surface of the intermediate rail 5 without being inserted into the insertion holes 4U provided in the upper screen 6U from 1 to 4. However, with regard to the upper lifting cord 3U, Unlike the first embodiment, the intermediate rail 5 is supported by hanging down from the head box 1 so as to be offset indoors.

  Therefore, for the insertion hole 4U, the upper elevating cord 3U is suspended forward from the approximate center of the longitudinal width (width 2 × a shown) of the intermediate rail 5 and the distance b (<a ) Is positioned in front of the upper screen 6U to support the intermediate rail 5. As a result, even if the lower lifting cord 3L is detoured so as to pass through the back surface of the intermediate rail 5, the inclination of the intermediate rail 5 can be suppressed and the level can be kept substantially horizontal.

  In the pleated screen of the second embodiment, the hole diameter of the insertion holes 4U and 4L, the cord diameter of the upper lifting cord 3U and the lower lifting cord 3L, and the arrangement position of the upper lifting cord 3U and the lower lifting cord 3L in a front view And can be configured in the same manner as the first embodiment.

  Therefore, the pleated screen of the second embodiment can be designed to keep all of the advantages of the first embodiment described above while keeping the inclination of the intermediate rail 5 substantially horizontal.

Third Embodiment
Next, with reference to FIG. 9, a pleated screen of a third embodiment having an upper screen 6U and a lower screen 6L will be described. The same reference numerals as in the first embodiment denote the same constituent elements.

  In the pleated screen of the third embodiment shown in FIG. 9, both the insertion holes 4U and the insertion holes 4L are respectively provided at substantially the center of the width in the front-rear direction of the upper screen 6U and the lower screen 6L. The first embodiment is that the lower lifting cord 3L is inserted through both the insertion hole 4U and the insertion hole 4L of the lower screen 6L, and the upper lifting cord 3U is suspended on the back side of the upper screen 6U. The embodiment is different from the embodiment, and the other points are the same as the first embodiment.

  That is, as shown in FIG. 9B, the lower lifting cord 3L hanging from the head box 1 is inserted into the insertion hole 4U of the upper screen 6U, and then the width of the middle rail 5 in the front-rear direction (width 2 The intermediate rail 5 is penetrated through a through passage 5a formed substantially at the center of xa), and then inserted into the insertion hole 4L of the lower screen 6L and connected to the bottom rail 7.

  On the other hand, the upper lifting cord 3U hanging from the head box 1 is hung on the back side of the upper screen 6U and connected to the intermediate rail 5. As a technique for hanging the lifting cord on the back side of the upper screen 6U, it is possible to apply the techniques shown in FIGS. 5 (a), 6 (a) or 7 (a), 7 (b) and 7 (c). it can.

  Therefore, the formation positions of the insertion holes 4U and 4L with respect to the respective screens can be the same as in the first embodiment, but only the lower lifting cords 3L are inserted through the insertion holes 4U and 4L. Since the side lifting cord 3L passes through the intermediate rail 5 from the head box 1 and is linearly dropped to the bottom rail 7, the inclination of the intermediate rail 5 can be suppressed and the horizontal can be maintained substantially.

  The upper lifting cord 3U hanging from the head box 1 is hung on the back side of the upper screen 6U and connected to the middle rail 5 to support the middle rail 5 at a distance b (<a) from the back of the middle rail 5 Therefore, no insertion hole is provided in the upper screen 6U for inserting the upper lifting cord 3U.

  Also in the pleated screen of the third embodiment, the hole diameter of the insertion holes 4U and 4L, the cord diameter of the upper lifting cord 3U and the lower lifting cord 3L, and the arrangement position of the upper lifting cord 3U and the lower lifting cord 3L in a front view Can be configured in the same manner as in the first embodiment.

  Therefore, the pleated screen of the third embodiment can encompass all the advantages of the first embodiment described above, and can suppress the inclination of the intermediate rail 5 to keep it substantially horizontal.

Fourth Embodiment
Next, with reference to FIG. 10, a pleated screen according to a fourth embodiment having an upper screen 6U and a lower screen 6L will be described. The same reference numerals as in the first embodiment denote the same constituent elements.

In the pleated screen of the fourth embodiment shown in FIG. 10, the first insertion hole 4U for inserting the lower lifting cord 3L and the upper lifting cord 3U are inserted at the approximate center of the front screen 6U in the front-rear direction width. The insertion holes 4U of 2 are arranged in parallel back and forth, and the insertion holes 4L are provided at the approximate center of the width of the lower screen 6L in the front-rear direction, and not only the upper lifting cord 3U but also the lower lifting cord 3L from the head box 1 This embodiment is different from the first embodiment in that it is configured to hang at the approximate center of the width in the front-rear direction of the upper screen 6U and the lower screen 6L through the intermediate rail 5 to the bottom rail 7. Is the same as in the first embodiment.

  That is, as shown by the fabric surface view in FIG. 10A, the upper screen 6U is provided with a first insertion hole 4U for inserting the lower lifting cord 3L and an upper lifting The second insertion holes 4U through which the cords 3U are inserted are juxtaposed back and forth. As in the first embodiment, the lower screen 6L is provided with an insertion hole 4L through which the lower lifting cord 3L is inserted at a substantially central portion in the front-rear direction width.

  Then, as shown in FIG. 10B, the lower lifting cord 3L hanging from the head box 1 is inserted into the first insertion hole 4U of the upper screen 6U, and then the width of the middle rail 5 in the front-rear direction ( The intermediate rail 5 is penetrated through a through passage 5a formed in a substantially central portion of the width 2 × a) shown, and then inserted into the insertion hole 4L of the lower screen 6L and connected to the bottom rail 7.

  On the other hand, the upper elevating cord 3U hanging from the head box 1 is inserted into the second insertion hole 4U of the upper screen 6U and connected to the intermediate rail 5 as in the first embodiment.

  Therefore, only the lower lifting cord 3L is inserted through one of the pair of inserting holes 4U arranged in parallel in the front and rear of the upper screen 6U and the inserting hole 4L in the lower screen 6L, and the lower lifting cord 3L Can be straightly suspended from the head box 1 through the intermediate rail 5 to the bottom rail 7, so that the inclination of the intermediate rail 5 can be suppressed to keep it substantially horizontal.

  Then, only the upper lifting cord 3U hanging from the head box 1 is inserted into the other of the pair of insertion holes 4U in the upper screen 6U.

  Also in the pleated screen of the fourth embodiment, the hole diameters of the insertion holes 4U and 4L, the cord diameters of the upper and lower lifting cords 3U and the lower lifting cord 3L, and the arrangement of the upper lifting cord 3U and the lower lifting cord 3L in a front view The position can be configured as in the first embodiment.

  Therefore, the pleated screen of the fourth embodiment can include all the advantages of the first embodiment described above, and can suppress the inclination of the intermediate rail 5 to keep it substantially horizontal.

  In the example of the present embodiment, as shown in FIG. 11A, the upper screen is formed of a pair of insertion holes 4U arranged in parallel so that the lower lifting cord 3L and the upper lifting cord 3U are separately inserted. An example was described in which the lower lifting cord 3L is linearly suspended until it is connected to the bottom rail 7 from the head box 1 through the intermediate rail 5 by providing the lower lifting cord 3L at a substantially central portion in the front-rear direction width of 6U. As shown in (b), the pair of insertion holes 4U may be formed to be separated by the width in the front-rear direction of the upper screen 6U. In this case, the lower lifting cord 3L is detoured to the back of the intermediate rail 5 It can be made to hang and let it hang.

[A further embodiment]
As a further development from the example and modification of each embodiment described above, when the lower lifting cord 3L is diverted to the back of the intermediate rail 5 and suspended, alleviation of interference resistance to the intermediate rail 5 and reduction of the lower screen 6L In order to improve the lifting and lowering performance, the lower lifting and lowering cord 3L may be engaged with the lower screen 6L more linearly and may be suspended.

  For example, as a representative example, as a modification from the first embodiment, the embodiments of Examples 1 to 6 are simply illustrated in FIGS. 12 to 14 and will be sequentially described below.

(Example 1)
First, in the embodiment of Example 1 shown in FIG. 12A, the upper elevating cord 3U for raising and lowering the upper screen 6U is inserted into the insertion hole 4U of the upper screen 6U and the lower side for elevating the lower screen 6L. The lifting cord 3L is not inserted into the insertion hole 4U of the upper screen 6U but is detoured through the back of the intermediate rail 5 and inserted into the insertion hole 4L formed at a position offset rearward from the center in the front-rear direction width of the lower screen 6L. I am doing it.

  The insertion holes 4U of the upper screen 6U in the embodiment of the example 1 shown in FIG. 12A are not limited, but in the present example, each of the upper screen 6U is folded in a zigzag shape in multiple stages in the vertical direction. The upper elevating cord 3U is suspended substantially at the center of the longitudinal width (the width 2 × a shown) of the intermediate rail 5 which is formed in the longitudinal width center of the upper screen 6U in a step (one step is a “く” portion). Is configured to

  On the other hand, with regard to the insertion holes 4L of the lower screen 6L in the embodiment of Example 1 shown in FIG. 12 (a), each step (one step is a "letter") bent in a zigzag shape in multiple steps in the vertical direction in the lower screen 6L. Part), the lower screen 6L is formed at a position offset rearward from the center in the longitudinal direction of the lower screen 6L, that is, the position of length b 'from the front in the longitudinal direction in each step of the lower screen 6L; The hole center of the insertion hole 4L is located at the position b '). Further, the lower lifting cord 3L is configured to hang down at a position of length b from the front in the front-rear direction of the intermediate rail 5 and a position of length c (<b) from the rear.

  In the embodiment of Example 1 shown in FIG. 12 (a), the cloth widths in the front-rear direction of the upper screen 6U and the lower screen 6L are equal, and the position O of the middle in the front-rear direction width of the upper screen 6U When the upper screen 6U and the lower screen 6L are respectively folded in with the position O 'at the center in the front-rear direction width of the screen 6L at the same position, the upper screen 6U and the lower screen 6L are hardly displaced in the front-rear direction .

  As described above, the lower lifting cord 3L is inserted into the insertion hole 4L formed at a position offset rearward from the center of the lower screen 6L in the front-rear direction width, whereby the lower lifting cord 3L is mounted on the back of the intermediate rail 5. The lower raising and lowering cord 3L can be engaged with the lower screen 6L more linearly and can be lowered, thereby reducing interference resistance to the intermediate rail 5 and improving the raising and lowering performance of the lower screen 6L. It can be done.

(Example 2)
Next, in the embodiment of Example 2 shown in FIG. 12B, the upper elevating cord 3U for raising and lowering the upper screen 6U is inserted through the insertion hole 4U of the upper screen 6U, and the lower screen 6L is rearward from the upper screen 6U. The lower elevating cord 3L for raising and lowering the lower screen 6L is not inserted into the insertion hole 4U of the upper screen 6U, and is diverted so as to pass through the back of the intermediate rail 5 The insertion hole 4L formed at the center in the direction width is inserted.

  The insertion holes 4U of the upper screen 6U in the embodiment of Example 2 shown in FIG. 12 (b) are not limited, but in the present example, each of the upper screen 6U is folded in a zigzag shape in multiple stages in the vertical direction. The upper elevating cord 3U is suspended substantially at the center of the longitudinal width (the width 2 × a shown) of the intermediate rail 5 which is formed in the longitudinal width center of the upper screen 6U in a step (one step is a “く” portion). Is configured to

  On the other hand, in the insertion hole 4L of the lower screen 6L in the embodiment of Example 2 shown in FIG. 12B, each step (one step is a "letter") which is bent in zigzag in multiple steps in the vertical direction in the lower screen 6L. Part) is formed in the longitudinal width center of lower screen 6L, that is, the center of insertion hole 4L is positioned at the longitudinal width center (position of length a 'from the front and the rear) in each step of lower screen 6L doing.

  However, in the embodiment of Example 2 shown in FIG. 12B, while the cloth widths in the front-rear direction of the upper screen 6U and the lower screen 6L are equal, the position of the position O 'at the center in the front-rear direction width of the lower screen 6L is The position of length b from the front in the front-rear direction of the intermediate rail 5 is offset from the front in the front-rear direction of the middle rail 5 and the length c (<b The lower lifting cord 3L is configured to hang down at the position of. Therefore, when the upper screen 6U and the lower screen 6L are respectively folded, the upper screen 6U and the lower screen 6L are configured to be shifted in the front-rear direction.

  Thus, when the lower raising and lowering cord 3L is diverted to the back of the intermediate rail 5 and suspended by configuring the lower screen 6L to be offset rearward relative to the upper screen 6U, the lower raising and lowering cord 3L can be more linearly engaged with the lower screen 6L to be suspended, and interference resistance with respect to the intermediate rail 5 can be alleviated and the elevating performance of the lower screen 6L can be improved.

(Example 3)
Next, in the embodiment of Example 3 shown in FIG. 13A, the upper elevating cord 3U for raising and lowering the upper screen 6U is inserted through the insertion hole 4U of the upper screen 6U, and the lower screen 6L is back and forth from the upper screen 6U. The lower lifting cord 3L for raising and lowering the lower screen 6L after forming the direction width to a large size is not inserted through the insertion hole 4U of the upper screen 6U, but is diverted to pass through the back of the intermediate rail 5 to lower the lower screen 6L. The insertion hole 4L formed at the center in the front-rear direction width of the head is inserted.

  The insertion holes 4U of the upper screen 6U in the embodiment of Example 3 shown in FIG. 13A are not limited, but in the present example, each of the upper screen 6U is folded in a zigzag shape in multiple stages in the vertical direction. The upper elevating cord 3U is suspended substantially at the center of the longitudinal width (the width 2 × a shown) of the intermediate rail 5 which is formed in the longitudinal width center of the upper screen 6U in a step (one step is a “く” portion). Is configured to

  On the other hand, with regard to the insertion holes 4L of the lower screen 6L in the embodiment of Example 3 shown in FIG. 13 (a), each step (one step is a "letter") bent in a zigzag shape in multiple steps in the vertical direction in the lower screen 6L. Part), the lower screen 6L is formed at a position offset rearward from the center in the longitudinal direction of the lower screen 6L, that is, the position of length b 'from the front in the longitudinal direction in each step of the lower screen 6L; The hole center of the insertion hole 4L is located at the position b ').

  In particular, in the embodiment of Example 3 shown in FIG. 13A, the lower screen 6L is formed to have a width in the front-rear direction larger than that of the upper screen 6U. For this reason, the lower lifting cord 3L for raising and lowering the lower screen 6L may be suspended without bending from the rear of the upper screen 6U to the rear of the lower screen 6L through the back of the intermediate rail 5 it can.

  In the embodiment of Example 3 shown in FIG. 13A, the lower screen 6L is formed so as to have a larger width in the front-rear direction than the upper screen 6U, and then the position of the position O 'at the center in the front-rear direction width of the lower screen 6L. Is offset by a length d (> 0) from the position O at the center in the front-rear direction width of the upper screen 6U by a length d (> 0), the position of the length b from the front in the front-rear direction of the intermediate rail 5, the length c from the rear The lower lifting cord 3L is configured to hang down at the position <b).

  However, in the embodiment of Example 3 shown in FIG. 13 (a), the lower screen 6L is formed to have a larger width in the front-rear direction than the upper screen 6U, and then the lower screen 6L is as shown in Example 1 shown in FIG. With the position O in the front-rear direction width center of the upper screen 6U and the position O 'in the front-rear direction width center of the lower screen 6L as the same position, the position of the length b from the front to the back of the intermediate rail 5 The lower lifting cord 3L may be configured to hang down at the position of c (<b).

  As described above, by configuring the lower screen 6L to be larger in width in the front-rear direction than the upper screen 6U, the lower elevation cord 3L is dropped when the lower elevation cord 3L is diverted to the back surface of the intermediate rail 5. The lower screen 6L can be substantially linearly engaged and suspended, and interference resistance with respect to the intermediate rail 5 can be alleviated and the elevating performance of the lower screen 6L can be improved.

(Example 4)
Next, in the embodiment of Example 4 shown in FIG. 13B, the upper elevating cord 3U for raising and lowering the upper screen 6U is inserted into the insertion hole 4U of the upper screen 6U and the lower for raising and lowering the lower screen 6L. The side lifting cord 3L is not inserted into the insertion hole 4U of the upper screen 6U, but is diverted to pass through the back of the intermediate rail 5, and the rear end of each step folded in zigzag in multiple steps in the vertical direction in the lower screen 6L It inserts in the penetration hole 62 formed in the engagement piece 61 provided in this. In the lower screen 6L, although the engaging pieces 61 illustrate the fabric provided at the rear end of each step in the lower screen 6L, not only the rear end of each step but also the front end of each step Also, the cloth may be provided with the engagement piece 61.

  The insertion holes 4U of the upper screen 6U in the embodiment of Example 4 shown in FIG. 13 (b) are not limited, but in this example, each of the upper screen 6U is folded in a zigzag shape in multiple stages in the vertical direction. The upper elevating cord 3U is suspended substantially at the center of the longitudinal width (the width 2 × a shown) of the intermediate rail 5 which is formed in the longitudinal width center of the upper screen 6U in a step (one step is a “く” portion). Is configured to

  On the other hand, the lower lifting cords 3L are not inserted into the insertion holes 4U of the upper screen 6U, but are detoured through the back of the intermediate rail 5 and folded in zigzag in multiple steps in the vertical direction in the lower screen 6L One stage is inserted through the insertion hole 62 provided in the engagement piece 61 of the "く" portion.

  In the embodiment of Example 4 shown in FIG. 13B, the fabric width in the front-rear direction of the upper screen 6U and the lower screen 6L is different but may be the same, and the position O of the middle in the front-rear direction width of the upper screen 6U The position O 'at the middle of the lower screen 6L in the front-rear direction width is the same position, but the position O' at the middle of the front-rear direction width of the lower screen 6L is You may make it offset.

  As described above, the lower lifting cord 3L is bypassed to the back surface of the intermediate rail 5 by inserting the lower lifting cord 3L into the insertion hole 62 provided in the engagement piece 61 of each step in the lower screen 6L. When the lower lifting cord 3L is engaged with the lower screen 6L in a substantially linear manner and suspended, the alleviation of the interference resistance to the intermediate rail 5 and the raising and lowering performance of the lower screen 6L are improved. Can.

  Further, in the embodiment of Example 4 shown in FIG. 13 (b), since the insertion hole 4L is not provided in the lower screen 6L, light leakage from the insertion hole 4L is eliminated, and the lower screen 6L is made of light shielding drape material. This is especially effective in cases such as

(Example 5)
Next, in the embodiment of Example 5 shown in FIG. 14A, the upper elevating cord 3U for raising and lowering the upper screen 6U is inserted into the insertion hole 4U of the upper screen 6U and the lower for raising and lowering the lower screen 6L. The side lifting cord 3L is not inserted into the insertion hole 4U of the upper screen 6U, but is detoured through the back of the intermediate rail 5 and formed in each step which is bent in zigzag in multiple steps in the vertical direction in the lower screen 6L. The holes 4L are inserted. However, the insertion holes 4L of each stage in the lower screen 6L are formed at positions where part or all of them are offset from the rear to the front as going from the top to the bottom.

  The insertion holes 4U of the upper screen 6U in the embodiment of the example 5 shown in FIG. 14A are not limited, but in the present example, each of the upper screen 6U is folded in a zigzag shape in multiple stages in the vertical direction. The upper elevating cord 3U is suspended substantially at the center of the longitudinal width (the width 2 × a shown) of the intermediate rail 5 which is formed in the longitudinal width center of the upper screen 6U in a step (one step is a “く” portion). Is configured to

  On the other hand, with regard to the insertion holes 4L of the lower screen 6L in the embodiment of Example 5 shown in FIG. 14 (a), each step (one step is a "letter") bent in a zigzag shape in multiple steps in the vertical direction in the lower screen 6L. In the part), an insertion hole formed so as to gradually shift the position offset rearward from the center in the front-rear direction width toward the center in the front-rear direction width from the top to the bottom is included.

  That is, as shown in the figure, the lengths c1 ', c2' (> c1 '), c3' (> c2 '), c4' (c1 ', c2' (> c2 '), c4') from the rear end of each step from the top to the bottom of lower screen 6L > C3 ') The insertion hole 4L formed by shifting to the position of c5' (> c4 ') is included. The length c5 'is shorter than the length b' from the front end in the front-rear direction of the stage.

  And in this example, although not limited, in the lower stage where the insertion hole 4L is formed at the position of c5 ', the longitudinal width center (the position of the length a' from the front and the rear) So that the hole center of the insertion hole 4L is located, the upper elevating cord 3U is suspended at substantially the center of the width (the width 2 × a shown) of the intermediate rail 5 in the end.

  In the embodiment of Example 5 shown in FIG. 14A, the cloth widths in the front-rear direction of the upper screen 6U and the lower screen 6L are equal but may be different, and the center in the front-rear direction width of the upper screen 6U Position of the lower screen 6L is the same position as the position O of the lower screen 6L in the front-rear direction width, but the position O 'of the middle of the lower screen 6L in the front-rear direction width It may be offset backwards or forwards from the

  Thus, the insertion formed so as to gradually shift the position in which the lower lifting cord 3L is offset rearward from the center in the front-rear direction width toward the center in the front-rear direction width from the top to the bottom of the lower screen 6L. When the lower lifting cord 3L is diverted to the back surface of the intermediate rail 5 and suspended by including the hole, the lower lifting cord 3L is engaged with the lower screen 6L and suspended more linearly. It is possible to reduce the interference resistance with respect to the intermediate rail 5 and improve the lifting and lowering performance of the lower screen 6L.

(Example 6)
Next, in the embodiment of Example 6 shown in FIG. 14B, the upper elevating cord 3U for raising and lowering the upper screen 6U is inserted into the insertion hole 4U of the upper screen 6U and the lower for raising and lowering the lower screen 6L. The side lifting cord 3L is not inserted into the insertion hole 4U of the upper screen 6U, but is bypassed to pass through the back surface of the intermediate rail 5 and at least the most of each step of the lower screen 6L folded in zigzag in multiple steps in the vertical direction The rear of a predetermined step including the upper stage is made to hang down, and it is made to insert in penetration hole 4L provided below the said predetermined step.

  The insertion holes 4U of the upper screen 6U in the embodiment of Example 6 shown in FIG. 14 (b) are not limited, but in this example, each of the upper screen 6U is folded in a zigzag shape in multiple stages in the vertical direction. The upper elevating cord 3U is suspended substantially at the center of the longitudinal width (the width 2 × a shown) of the intermediate rail 5 which is formed in the longitudinal width center of the upper screen 6U in a step (one step is a “く” portion). Is configured to

  On the other hand, with regard to the insertion holes 4L of the lower screen 6L in the embodiment of Example 6 shown in FIG. 14 (b), each step (one step is a "letter") bent in a zigzag shape in multiple steps in the vertical direction in the lower screen 6L. In the part), an insertion hole formed so as to gradually shift the position offset rearward from the center in the front-rear direction width toward the center in the front-rear direction width from the top to the bottom is included.

  That is, in the illustrated example, the length c1 ', c2' (> c1 '), c3' from the rear end portion of the lower level immediately below the uppermost level in the lower screen 6L toward the lower level It includes an insertion hole 4L formed shifted to the position (> c2 '). The length c3 'is shorter than the length b' from the front end in the front-rear direction of the stage.

  And in this example, although it does not limit, below the stage where the insertion hole 4L is formed at the position of c3 ', in the front-rear direction width center (position of length a' from the front and the back) In order to locate the hole center of the insertion hole 4L, the upper elevating cord 3U is suspended at substantially the center of the longitudinal width (width 2 × a shown) of the intermediate rail 5 in the end.

  However, as the gist of the embodiment of Example 6 shown in FIG. 14 (b), it is sufficient that the lower lifting cord 3L hangs at least the rear of the top of the lower screen 6L. The positions of the lower stage insertion holes 4L may satisfy c1 ′ = c2 ′ = c3 ′ ≦ a ′.

  Further, in the embodiment of Example 6 shown in FIG. 14B, the cloth widths in the front-rear direction of the upper screen 6U and the lower screen 6L are equal but may be different, and the center in the front-rear direction width of the upper screen 6U Position of the lower screen 6L is the same position as the position O of the lower screen 6L in the front-rear direction width, but the position O 'of the middle of the lower screen 6L in the front-rear direction width It may be offset backwards or forwards from the

  Thus, when the lower lifting cord 3L is diverted to the back of the intermediate rail 5 by hanging it by configuring the lower lifting cord 3L to hang down the rear of the predetermined step including at least the uppermost step in the lower screen 6L. In addition, the lower lifting cord 3L can be engaged with the lower screen 6L more linearly and suspended, and interference resistance with respect to the intermediate rail 5 can be alleviated and the lifting performance of the lower screen 6L can be improved.

  As described above, according to the embodiments of Examples 1 to 6 shown in FIGS. 12 to 14, when the lower lifting cord 3L is diverted to the back surface of the intermediate rail 5 and suspended, the interference resistance to the intermediate rail 5 is reduced. The lifting and lowering performance of the lower screen 6L can be improved. And it can also be set as another embodiment which combined suitably the examples 1-6 shown in FIG. 12 thru | or FIG. Further, the present invention is not limited to those further developed from the first embodiment, and examples 1 to 6 shown in FIG. 12 to FIG. It can also be done.

[Inclusive Embodiment Including Modifications]
FIG. 15 to FIG. 17 are schematic enlarged side views of the periphery of the screen of the pleated screen shown as a representative example for comprehensively describing the pleated screen of each embodiment according to the present invention, including the modified examples. The pleated screen according to the present invention illustrated in each of FIGS. 15 to 17 is for moving up and down the upper elevating cord 3U and lower screen 6L for raising and lowering the upper screen 6U in the insertion holes 4U formed in the upper screen 6U. The light leakage from the insertion hole 4U is suppressed by inserting only one of the lower elevating cords of the lower elevating cords 3L.

  First, in FIGS. 15 (a) to 15 (e), as an example of a representative embodiment of the pleated screen according to the present invention, the upper elevating cord 3U hanging from the head box 1 is formed on the upper screen 6U. The intermediate rail 5 is suspended so that the upper screen 6U can be moved up and down through the through holes 4U. Further, the lower lifting cord 3L hanging from the head box 1 is not inserted into the insertion hole 4U formed in the upper screen 6U by hanging the back surface or the front surface of the upper screen 6U, and the center of the lower screen 6L in the front-rear direction An example is shown in which the bottom rail 7 is suspended so that the lower screen 6L can be moved up and down by being inserted into an insertion hole 4L formed forward of the center or rearward of the center.

  More specifically, in the embodiment shown in FIG. 15 (a), the upper elevating cord 3U is inserted through the insertion holes 4U formed in each step of the upper screen 6U. The lower elevating cord 3L does not pass through the insertion hole 4U of the upper screen 6U by hanging the back of the upper screen 6U, but passes through the intermediate rail 5 (for example, the intermediate rail 5 is bent and penetrated as shown in FIG. The rear end surface of the lower screen 5 may be diverted), or the insertion holes 4L formed in each step of the lower screen 6L are inserted (even from the uppermost step of the lower screen 6L to the insertion holes 4L in the lower predetermined step) Good). In this example, the insertion holes 4U of each step in the upper screen 6U are formed at a position offset rearward from the center in the front-rear direction of the upper screen 6U (in other words, the front and back of the intermediate rail 5 with respect to the upper screen 6U) The upper lifting cord 3U is configured to hang down at a position of length d from the front in the direction and at a position of length e (<d) from the rear). Further, the insertion holes 4L of each step in the lower screen 6L are also formed at a position offset rearward from the center in the front-rear direction of the lower screen 6L (in other words, the front-rear direction of the intermediate rail 5 with respect to the lower screen 6L) The lower lifting cord 3L is configured to hang down at a position of length b from the front and a position of length c (<b) from the rear).

  Next, in the embodiment shown in FIG. 15 (b), the upper elevating cord 3U is inserted through the insertion holes 4U formed in each step of the upper screen 6U. The lower elevating cord 3L does not pass through the insertion hole 4U of the upper screen 6U by hanging the back of the upper screen 6U, but passes through the intermediate rail 5 (for example, the intermediate rail 5 is bent and penetrated as shown in FIG. The rear end surface of the lower screen 5 may be diverted), or the insertion holes 4L formed in each step of the lower screen 6L are inserted (even from the uppermost step of the lower screen 6L to the insertion holes 4L in the lower predetermined step) Good). In this example, the insertion holes 4U of each step in the upper screen 6U are formed at a position offset forward from the center in the front-rear direction of the upper screen 6U (in other words, the front and rear of the intermediate rail 5 with respect to the upper screen 6U) The upper lifting cord 3U is configured to hang down at a position of length d from the front in the direction and at a position of length e (> d) from the rear). Further, the insertion holes 4L of each step in the lower screen 6L are formed at a position offset rearward from the center in the front-rear direction of the lower screen 6L (in other words, the front-rear direction of the intermediate rail 5 with respect to the lower screen 6L) The lower lifting cord 3L is configured to hang down at a position of length b from the front and a position of length c (<b) from the rear).

  Next, in the embodiment shown in FIG. 15 (c), the upper lifting cord 3U is inserted through the insertion holes 4U formed in each step of the upper screen 6U. The lower elevating cord 3L does not pass through the insertion hole 4U of the upper screen 6U by hanging down the front of the upper screen 6U, passes through the intermediate rail 5 (for example, the intermediate rail 5 is bent and penetrated as shown in FIG. The front end face of 5 may be diverted), and the insertion holes 4L formed in each step of the lower screen 6L are inserted (even from the uppermost step of the lower screen 6L to the insertion holes 4L in the lower predetermined step) Good). In this example, the insertion holes 4U of each step in the upper screen 6U are formed at the center of the upper screen 6U in the front-rear direction (in other words, from the front to the rear of the middle rail 5 with respect to the upper screen 6U) The upper lifting cord 3U is configured to hang at a position of a length a). In addition, the insertion holes 4L of each step in the lower screen 6L are also formed at the center in the front-rear direction of the lower screen 6L (in other words, from the front and the back of the intermediate rail 5 with respect to the lower screen 6L) The upper lifting cord 3U is configured to hang down at the position of the length a).

  Next, in the embodiment shown in FIG. 15 (d), the upper elevating cord 3U is inserted through the insertion holes 4U formed in each step of the upper screen 6U. The lower elevating cord 3L does not pass through the insertion hole 4U of the upper screen 6U by hanging down the front of the upper screen 6U, passes through the intermediate rail 5 (for example, the intermediate rail 5 is bent and penetrated as shown in FIG. The front end face of 5 may be diverted), and the insertion holes 4L formed in each step of the lower screen 6L are inserted (even from the uppermost step of the lower screen 6L to the insertion holes 4L in the lower predetermined step) Good). In this example, the insertion holes 4U of each step in the upper screen 6U are formed at the center of the upper screen 6U in the front-rear direction (in other words, from the front to the rear of the middle rail 5 with respect to the upper screen 6U) The upper lifting cord 3U is configured to hang at a position of a length a). In addition, the insertion holes 4L of each step in the lower screen 6L are formed at a position offset forward from the center of the lower screen 6L in the front-rear direction (in other words, the front-rear direction of the intermediate rail 5 with respect to the lower screen 6L) The lower lifting cord 3L is configured to hang down at the position of length b from the front and the position of length c (> b) from the rear).

  Next, in the embodiment shown in FIG. 15 (e), the upper elevating cord 3U is inserted through the insertion holes 4U formed in each step of the upper screen 6U. The lower elevating cord 3L does not pass through the insertion hole 4U of the upper screen 6U by hanging down the front of the upper screen 6U, passes through the intermediate rail 5 (for example, the intermediate rail 5 is bent and penetrated as shown in FIG. The front end face of 5 may be diverted), and the insertion holes 4L formed in each step of the lower screen 6L are inserted (even from the uppermost step of the lower screen 6L to the insertion holes 4L in the lower predetermined step) Good). In this example, the insertion holes 4U of each step in the upper screen 6U are formed at the center of the upper screen 6U in the front-rear direction (in other words, from the front to the rear of the middle rail 5 with respect to the upper screen 6U) The upper lifting cord 3U is configured to hang at a position of a length a). Further, the insertion holes 4L of each step in the lower screen 6L are formed at a position offset rearward from the center in the front-rear direction of the lower screen 6L (in other words, the front-rear direction of the intermediate rail 5 with respect to the lower screen 6L) The lower lifting cord 3L is configured to hang down at a position of length b from the front and a position of length c (<b) from the rear).

  On the other hand, in FIGS. 16 (a) to 16 (e) and 17 (a) to 17 (e), the head box 1 is suspended from the head box 1 as an example of a representative embodiment of the pleated screen according to the present invention. The upper elevating cord 3U is suspended from the intermediate rail 5 so that the upper screen 6U can be moved up and down without being inserted into the insertion hole 4U formed in the upper screen 6U. In addition, the lower lifting cord 3L hanging from the head box 1 is inserted into the insertion hole 4U formed in the upper screen 6U and the insertion hole 4L formed in the lower screen 6L so that the lower screen 6L can be moved up and down. The example which hung the rail 7 is shown.

  More specifically, in the embodiment shown in FIG. 16 (a), the upper elevating cord 3U is inserted into the insertion holes 4U formed in each step of the upper screen 6U by hanging the back surface (or the front surface) of the upper screen 6U. The intermediate rail 5 is suspended without being moved. The lower elevating cord 3L is inserted into the insertion hole 4U of the upper screen 6U, passes through the intermediate rail 5 and is inserted into the insertion holes 4L formed in each step of the lower screen 6L, and is straightened in the vertical direction without bending. I am trying to hang down. In this example, the insertion holes 4U of each step in the upper screen 6U are formed at a position offset rearward from the center in the front-rear direction of the upper screen 6U (in other words, the front and back of the intermediate rail 5 with respect to the upper screen 6U) The upper elevating cord 3U is configured to hang down at the position of length b from the front in the direction and the position of length c (<b) from the rear). Similarly, the insertion holes 4L of each step in the lower screen 6L are also formed at a position offset rearward from the center in the front-rear direction of the lower screen 6L (in other words, the front and back of the intermediate rail 5 with respect to the lower screen 6L) The lower lifting cord 3L is configured to hang down at the position of length b from the front in the direction and the position of length c (<b) from the rear).

  Next, in the embodiment shown in FIG. 16 (b), the upper elevating cord 3U is not inserted into the insertion holes 4U formed in each step of the upper screen 6U by hanging the back surface (or the front surface) of the upper screen 6U. The middle rail 5 is suspended on the The lower elevating cord 3L is inserted into the insertion hole 4U of the upper screen 6U, passes through the intermediate rail 5 and is inserted into the insertion holes 4L formed in each step of the lower screen 6L, and is straightened in the vertical direction without bending. I am trying to hang down. In this example, the insertion holes 4U of each step in the upper screen 6U are formed at the center of the upper screen 6U in the front-rear direction (in other words, from the front to the rear of the middle rail 5 with respect to the upper screen 6U) The upper lifting cord 3U is configured to hang at a position of a length a). Similarly, the insertion holes 4L of each step in the lower screen 6L are also formed at the center of the lower screen 6L in the front-rear direction (in other words, from the front to the rear of the middle rail 5 with respect to the lower screen 6L) The lower lifting cord 3L is configured to hang down at the position of the length a).

  Next, in the embodiment shown in FIG. 16C, the upper elevating cord 3U is not inserted through the insertion holes 4U formed in each step of the upper screen 6U by hanging the back surface (or the front surface) of the upper screen 6U. The middle rail 5 is suspended on the The lower elevating cord 3L is inserted into the insertion hole 4U of the upper screen 6U and passes through the intermediate rail 5 (for example, the intermediate rail 5 may be bent and penetrated as shown in the figure or the rear end face of the intermediate rail 5 may be bypassed) The insertion holes 4L formed in the respective steps of the lower screen 6L are inserted (may not be inserted into the insertion holes 4L of a predetermined step from the uppermost step of the lower screen 6L). In this example, the insertion holes 4U of each step in the upper screen 6U are formed at a position offset rearward from the center in the front-rear direction of the upper screen 6U (in other words, the front and back of the intermediate rail 5 with respect to the upper screen 6U) The upper lifting cord 3U is configured to hang down at a position of length d from the front in the direction and at a position of length e (<d) from the rear). On the other hand, the insertion holes 4L of each step in the lower screen 6L are formed at the center of the lower screen 6L in the front-rear direction (in other words, from the front and the back of the intermediate rail 5 with respect to the lower screen 6L) The lower lifting cord 3L is configured to hang down at the position of the length a).

  Next, in the embodiment shown in FIG. 16 (d), the upper elevating cord 3U is not inserted through the insertion holes 4U formed in each step of the upper screen 6U by hanging the back surface (or the front surface) of the upper screen 6U. The middle rail 5 is suspended on the The lower elevating cord 3L is inserted into the insertion hole 4U of the upper screen 6U and passes through the intermediate rail 5 (for example, the intermediate rail 5 may be bent and penetrated as shown in the figure or the rear end face of the intermediate rail 5 may be bypassed) The insertion holes 4L formed in the respective steps of the lower screen 6L are inserted (may not be inserted into the insertion holes 4L of a predetermined step from the uppermost step of the lower screen 6L). In this example, the insertion holes 4U of each step in the upper screen 6U are formed at a position offset rearward from the center in the front-rear direction of the upper screen 6U (in other words, the front and back of the intermediate rail 5 with respect to the upper screen 6U) The upper lifting cord 3U is configured to hang down at a position of length d from the front in the direction and at a position of length e (<d) from the rear). On the other hand, the insertion holes 4L of each step in the lower screen 6L are formed at a position offset forward from the center of the lower screen 6L in the front-rear direction (in other words, the front-rear direction of the intermediate rail 5 with respect to the lower screen 6L) The lower lifting cord 3L is configured to hang down at the position of length b from the front and the position of length c (> b) from the rear).

  Next, in the embodiment shown in FIG. 16 (e), the upper elevating cord 3U is not inserted through the insertion holes 4U formed in each step of the upper screen 6U by hanging the back surface (or the front surface) of the upper screen 6U. The middle rail 5 is suspended on the The lower elevating cord 3L is inserted into the insertion hole 4U of the upper screen 6U and passes through the intermediate rail 5 (for example, the intermediate rail 5 may be bent and penetrated as shown in the drawing, or the front end face of the intermediate rail 5 may be bypassed) The insertion holes 4L formed in the respective steps of the lower screen 6L are inserted (may not be inserted into the insertion holes 4L of a predetermined step from the uppermost step of the lower screen 6L). In this example, the insertion holes 4U of each step in the upper screen 6U are formed at a position offset forward from the center in the front-rear direction of the upper screen 6U (in other words, the front and rear of the intermediate rail 5 with respect to the upper screen 6U) The upper lifting cord 3U is configured to hang down at a position of length d from the front in the direction and at a position of length e (> d) from the rear). On the other hand, the insertion holes 4L of each step in the lower screen 6L are formed at the center of the lower screen 6L in the front-rear direction (in other words, from the front and the back of the intermediate rail 5 with respect to the lower screen 6L) The lower lifting cord 3L is configured to hang down at the position of the length a).

  Next, in the embodiment shown in FIG. 17A, the upper elevating cord 3U is not inserted into the insertion holes 4U formed in each step of the upper screen 6U by hanging the back surface (or the front surface) of the upper screen 6U. The middle rail 5 is suspended on the The lower elevating cord 3L is inserted into the insertion hole 4U of the upper screen 6U and passes through the intermediate rail 5 (for example, the intermediate rail 5 may be bent and penetrated as shown in the figure or the rear end face of the intermediate rail 5 may be bypassed) The insertion holes 4L formed in the respective steps of the lower screen 6L are inserted (may not be inserted into the insertion holes 4L of a predetermined step from the uppermost step of the lower screen 6L). In this example, the insertion holes 4U of each step in the upper screen 6U are formed at a position offset forward from the center in the front-rear direction of the upper screen 6U (in other words, the front and rear of the intermediate rail 5 with respect to the upper screen 6U) The upper lifting cord 3U is configured to hang down at a position of length d from the front in the direction and at a position of length e (> d) from the rear). On the other hand, the insertion holes 4L of each step in the lower screen 6L are formed at positions offset rearward from the center in the front-rear direction of the lower screen 6L (in other words, the front-rear direction of the intermediate rail 5 with respect to the lower screen 6L) The lower lifting cord 3L is configured to hang down at a position of length b from the front and a position of length c (<b) from the rear).

  Next, in the embodiment shown in FIG. 17B, the upper elevating cord 3U is not inserted into the insertion holes 4U formed in each step of the upper screen 6U by hanging the back surface (or the front surface) of the upper screen 6U. The middle rail 5 is suspended on the The lower elevating cord 3L is inserted into the insertion hole 4U of the upper screen 6U, passes through the intermediate rail 5 and is inserted into the insertion holes 4L formed in each step of the lower screen 6L, and is straightened in the vertical direction without bending. I am trying to hang down. In this example, the insertion holes 4U of each step in the upper screen 6U are formed at a position offset forward from the center in the front-rear direction of the upper screen 6U (in other words, the front and rear of the intermediate rail 5 with respect to the upper screen 6U) The upper elevating cord 3U is configured to hang down at the position of length b from the front of the direction and the position of length c (> b) from the rear). Similarly, the insertion holes 4L of each step in the lower screen 6L are also formed at a position offset forward from the center in the front-rear direction of the lower screen 6L (in other words, the front and back of the intermediate rail 5 with respect to the lower screen 6L) The lower lifting cord 3L is configured to hang down at the position of length b from the front in the direction and the position of length c (> b) from the rear).

Next, in the embodiment shown in FIG. 17 (c), the upper lifting cords 3U (3U-1, 3U-2 shown) are suspended so as to form a pair at the front and rear of the upper screen 6U. The intermediate rail 5 is suspended in a loop without being inserted into the insertion holes 4U formed in each step. When the upper lifting cord 3U is configured to suspend the intermediate rail 5 in a loop in this manner, both of the upper lifting cords 3U-1 and 3U-2 are simultaneously pulled out or pulled out of the head box 1, or The middle rail 5 and the upper screen 6U are moved up and down by locking one of the upper lifting cords 3U-1 and 3U-2 to the head box 1 etc and pulling out the other from the head box 1. Can.
The lower elevating cord 3L is inserted into the insertion hole 4U of the upper screen 6U, passes through the intermediate rail 5 and is inserted into the insertion holes 4L formed in each step of the lower screen 6L, and is straightened in the vertical direction without bending. I am trying to hang down. In this example, the insertion holes 4U of each step in the upper screen 6U are formed at the center of the upper screen 6U in the front-rear direction (in other words, from the front to the rear of the middle rail 5 with respect to the upper screen 6U) The upper lifting cord 3U is configured to hang at a position of a length a). Similarly, the insertion holes 4L of each step in the lower screen 6L are also formed at the center of the lower screen 6L in the front-rear direction (in other words, from the front to the rear of the middle rail 5 with respect to the lower screen 6L) The lower lifting cord 3L is configured to hang down at the position of the length a).

Next, in the embodiment shown in FIG. 17 (d), the upper lifting cord 3U (3U-1, 3U-2 shown) is suspended so as to form a pair before and after the upper screen 6U. The intermediate rail 5 is suspended in a loop without being inserted into the insertion holes 4U formed in each step. When the upper lifting cord 3U is configured to suspend the intermediate rail 5 in a loop in this manner, both of the upper lifting cords 3U-1 and 3U-2 are simultaneously pulled out or pulled out of the head box 1, or The middle rail 5 and the upper screen 6U are moved up and down by locking one of the upper lifting cords 3U-1 and 3U-2 to the head box 1 etc and pulling out the other from the head box 1. Can.
The lower elevating cord 3L is inserted into the insertion hole 4U of the upper screen 6U, passes through the intermediate rail 5 and is inserted into the insertion holes 4L formed in each step of the lower screen 6L, and is straightened in the vertical direction without bending. I am trying to hang down. In this example, the insertion holes 4U of each step in the upper screen 6U and the insertion holes 4L of each step in the lower screen 6L are formed at positions offset rearward from the center in the front-rear direction of each screen, respectively. As mentioned in the several examples described above, they may be formed at positions offset forward from the center in the front-rear direction of each screen, respectively, or the lower lifting cord 3L may be bent and suspended. May be However, the vertical movement of the intermediate rail 5 related to the raising and lowering operation is suppressed by configuring the head box 1 to vertically descend in the vertical direction without bending from the head box 1 to the bottom rail 7 through the intermediate rail 5. It is preferable because it can be

  In addition, as shown in FIG. 17 (e), when the upper lifting cords 3U (3U-1, 3U-2 shown) are suspended in pairs before and after the upper screen 6U, each upper lifting The lower ends of the cords 3U-1 and 3U-2 may be attached to the intermediate rail 5 and suspended. In this case, the middle rail 5 and the upper screen 6U can be raised and lowered by simultaneously pulling out or pulling out both the upper and lower lifting cords 3U-1 and 3U-2 from the head box 1.

  In each of the embodiments shown in FIGS. 15 to 17, the cloth widths in the front-rear direction of the upper screen 6U and the lower screen 6L are equal but may be different, and the position of the middle in the front-rear direction width of the upper screen 6U The position O 'at the center of the front and rear direction width of the lower screen 6L is the same position, but the position O' at the center of the front and rear direction width of the lower screen 6L is Alternatively, it may be offset forward. That is, the embodiments shown in FIGS. 15 to 17 may be combined with the techniques of the embodiments shown in FIGS. 12 to 14.

  Although the present invention has been described above by taking the example of the specific embodiment, the present invention is not limited to the example of the above embodiment, and various modifications can be made without departing from the technical concept thereof. For example, although an example of a pleated screen according to a specific embodiment in which the vertically foldable screen is suspended and supported from the head box has been described, a pleated screen according to another embodiment in which the screen is suspended vertically or back and forth, A screen having a structure in which a large number of foldable honeycomb structure cylinders are vertically connected can be suspended and supported from the head box, and a pleated screen can be formed so that the screen of the honeycomb structure can be moved up and down.

  Moreover, although the specific example was demonstrated as an operation means regarding raising / lowering of a screen in the example of embodiment mentioned above, it can be set as an arbitrary form regardless of manual operation and electric operation.

  In the above-described fourth embodiment, as a suitable example, a first insertion hole 4U for inserting an elevation code 3U for raising and lowering the upper screen 6U to the upper screen 6U, and an elevation code for raising and lowering the lower screen 6L. Although an example in which the second insertion holes 4U for inserting 3L are formed in a vertical array in the front-rear direction has been described, the diameter of the insertion holes 4U can be reduced and the elevation cord 3U can be formed even in a horizontal array. , 3 L to reduce light leakage by reducing the diameter, and one or both of the pair of through holes 4U arranged in the horizontal direction are offset from the substantially central portion in the front and rear direction of the upper screen 6U By forming, it can be set as the form made to contribute to the effect which produces inclination control of middle rail 5. FIG.

  According to the present invention, light leakage can be suppressed, and in particular, the design can be enhanced, which is useful for the application of a pleated screen.

1 head box 2 bracket 3U upper lifting code 3L lower lifting code 4U, 4L insertion hole 5 middle rail 6 screen 6U upper screen 6L lower screen 7 bottom rail

Claims (17)

A pleated screen comprising an upper screen and a lower screen which can be raised and lowered individually by a plurality of lifting cords,
A first raising and lowering cord for raising and lowering one of the upper screen and the lower screen is inserted into an insertion hole formed in the upper screen;
A pleated screen characterized in that a second lifting cord for lifting and lowering the other of the upper screen and the lower screen is configured not to be inserted into the insertion hole formed in the upper screen.   A pleated screen characterized in that the second lifting cord is inserted into an insertion hole formed in the lower screen.   3. The method according to claim 1, wherein the diameter of the insertion hole is 1.8 mm as a prescribed value, and each of the first lifting cord and the second lifting cord is 0.7 mm as a prescribed value. Pleated screen as described.   The pleat according to any one of claims 1 to 3, wherein the insertion hole formed in the upper screen is formed at a position offset from a substantially central portion in the front-rear direction of the upper screen. screen.   The insertion hole formed in the said upper screen is formed in the position offset in the front-back direction with respect to the insertion hole formed in the said lower screen, The any one of Claim 1 to 4 characterized by the above-mentioned. Pleated screen as described.   A pitch holding cord for holding the upper screen at a predetermined pitch is provided, and the second lifting cord is inserted through an annular support cord provided on the pitch holding cord. The pleated screen according to any one of the preceding claims. A pleated screen comprising an upper screen and a lower screen which can be raised and lowered individually by a plurality of lifting cords,
The first raising and lowering cord for raising and lowering the upper screen is inserted into the insertion hole formed in the upper screen,
The second lifting cord for raising and lowering the lower screen is not inserted into the insertion hole formed in the upper screen, but is inserted into the insertion hole formed at a position offset rearward from the center in the front-rear direction width of the lower screen. Pleated screen characterized by A pleated screen comprising an upper screen and a lower screen which can be raised and lowered individually by a plurality of lifting cords,
The first raising and lowering cord for raising and lowering the upper screen is inserted into the insertion hole formed in the upper screen,
The second lifting cord for offsetting the lower screen behind the upper screen and raising and lowering the lower screen is not inserted into the insertion hole formed in the upper screen but is inserted in the insertion hole formed in the lower screen A pleated screen characterized in that it is inserted. A pleated screen comprising an upper screen and a lower screen which can be raised and lowered individually by a plurality of lifting cords,
The first raising and lowering cord for raising and lowering the upper screen is inserted into the insertion hole formed in the upper screen,
The lower screen is formed to have a larger width in the front-rear direction than the upper screen, and a second lifting cord for moving the lower screen up and down is formed in the lower screen without being inserted into the insertion hole formed in the upper screen. A pleated screen characterized in that it is inserted into an insertion hole. A pleated screen comprising an upper screen and a lower screen which can be raised and lowered individually by a plurality of lifting cords,
The first raising and lowering cord for raising and lowering the upper screen is inserted into the insertion hole formed in the upper screen,
The second raising and lowering cord for raising and lowering the lower screen is not inserted into the insertion hole formed in the upper screen, but at the rear end of each step which is bent in zigzag in the upper and lower direction in the lower screen. A pleated screen characterized in that it is inserted through an insertion hole formed in the provided engagement piece. A pleated screen comprising an upper screen and a lower screen which can be raised and lowered individually by a plurality of lifting cords,
The first raising and lowering cord for raising and lowering the upper screen is inserted into the insertion hole formed in the upper screen,
The second raising and lowering cord for raising and lowering the lower screen is not inserted into the insertion hole formed in the upper screen, and is formed in each step which is bent in a zigzag shape in many stages in the vertical direction in the lower screen Let through the hole,
A pleated screen characterized in that the insertion holes of each stage in the lower screen include an insertion hole formed at a position offset from the rear to the front as going from the top to the bottom. A pleated screen comprising an upper screen and a lower screen which can be raised and lowered individually by a plurality of lifting cords,
The first raising and lowering cord for raising and lowering the upper screen is inserted into the insertion hole formed in the upper screen,
The second raising and lowering cord for raising and lowering the lower screen is not inserted into the insertion hole formed in the upper screen, and the uppermost one of the steps formed in a zigzag shape in the upper and lower directions in the lower screen A pleated screen characterized in that the rear side of a predetermined step including the drooping point is inserted into an insertion hole provided below the predetermined step. A pleated screen comprising an upper screen and a lower screen which can be raised and lowered individually by a plurality of lifting cords,
A first raising and lowering cord for raising and lowering the upper screen is inserted through an insertion hole formed in the upper screen,
The second lifting cord for raising and lowering the lower screen is not inserted into the insertion hole formed in the upper screen, but is inserted in the insertion hole formed in the center in the front-rear direction of the lower screen. Characterized pleated screen. A pleated screen comprising an upper screen and a lower screen which can be raised and lowered individually by a plurality of lifting cords,
The first raising and lowering cord for raising and lowering the upper screen is configured to be capable of raising and lowering the upper screen without being inserted into the insertion hole formed in the upper screen,
The second raising and lowering cord for raising and lowering the lower screen is configured to be inserted into the insertion hole formed in the upper screen and the insertion hole formed in the lower screen so that the lower screen can be raised and lowered. Pleated screen featuring   The second lifting cord is inserted through the insertion hole formed in the upper screen and the insertion hole formed in the lower screen in such a manner that the second elevation cord hangs down straight in the vertical direction without bending. A pleated screen according to claim 14, characterized in that.   The pleat according to claim 14 or 15, wherein the second lifting cord is inserted through an insertion hole formed in front of the center in the front-rear direction of the lower screen or behind the center of the lower screen. screen.   The pleated screen according to any one of claims 14 to 16, wherein the first lifting and lowering cords are suspended in pairs at the front and back of the upper screen.