JP6271675B2 - Horizontal blind - Google Patents

Description

  The present invention relates to a horizontal blind that performs a slat angle adjusting operation and an elevating operation using a ladder cord and an elevating cord that is not inserted into the slat.

  In the horizontal blind, a multi-stage slat is supported by a ladder cord suspended from a head box, and a bottom rail is suspended from a lower end of an elevating cord suspended from the head box.

And each slat is rotated in the same phase via a ladder cord by operation of an operating device, and a bottom rail and a slat are raised and lowered via a raising / lowering cord.
As one type of such a horizontal blind, there is one that does not allow the lifting / lowering cord to be inserted into each slat, but allows the bottom rail and the slat to be lifted / lowered near the warp thread of the ladder cord. By adopting such a configuration, the slats can be easily rotated in the vertical direction, and it is not necessary to provide the lifting / lowering cord insertion holes in each slat, so that the light shielding performance when the slats are rotated in the vertical direction is improved. It becomes possible.

  In Patent Document 1 and Patent Document 2, the lifting / lowering cord is not inserted into each slat, and the bottom rail and the slat are inserted by inserting the lifting / lowering cord between a plurality of guide rings or wefts provided at equal intervals in the warp of the ladder cord. A structure is disclosed that prevents the slats from being meandered while being stacked and pulled up.

  19 (a) and 19 (b), in such a horizontal blind, a plurality of lifting / lowering cords 1 hang down at equal intervals in the longitudinal direction of the head box 2, and each lifting / lowering cord 1 is arranged in front of and behind the slat 3. In other words, it is supported suspended by being divided into the indoor side and the outdoor side.

  The lifting / lowering cord 1 suspended downward from the head box 2 via the guide roller 9 is suspended from the warp 5 of the ladder cord 4 suspended from the head box 2 at a predetermined distance in the front-rear direction of the horizontal blind. Suspended and supported so as to converge toward the warp 5 of the ladder cord gradually.

  And in the position where the raising / lowering cord 1 is spaced apart from the warp yarn 5 of the ladder cord 4, the separation distance between the raising / lowering cord 1 and the warp yarn 5 is within a predetermined interval by the guide rings 6a, 6b provided at two places above and below. Is set to The guide rings 6a and 6b are formed by, for example, forming a metal wire in a coil shape, and the diameter of the guide ring 6a positioned above is formed larger than the diameter of the guide ring 6b positioned below, and the lifting cord 1 This corresponds to the change in the distance between the thread and the warp yarn 5.

  With this configuration, when the drive shaft 10 is rotated by the operation of the operating device, the ladder cord support drum 7 is rotated, the slat 3 is rotated via the ladder cord 4, and the lifting / lowering cord winding drum 8 is It is rotated and the raising / lowering cord 1 is wound up or rewound, and the bottom rail and the slat 3 are raised and lowered.

  In the lower position of the head box 2, that is, the support position of the slat 3 in the upper part, the distance in the front-rear direction of the lifting / lowering cord 1 distributed in the front-rear direction is secured larger than the front-rear width of the slat 3.

  For this reason, when the slat 3 is held in the horizontal direction, the slat 3 in the upper portion is not sandwiched between the lifting cords 1 distributed before and after the slat 3, and deformation of the slat 3 due to the sandwich is prevented. Further, when the slat 3 is rotated, the upper slat 3 does not come into contact with the lifting / lowering cord 1 to prevent the rotation.

  The warp yarn 5 of the ladder cord 4 is held by the elevating cord 1 via guide rings 6a and 6b at the upper portion thereof, and is inserted between the weft yarns of the ladder cord below and held by the warp yarn 5. With such a configuration, when the bottom rail and the slat 3 are pulled up, the warp 5 of the ladder cord 4 is held in the vicinity of the lifting cord 1 and the ladder cord 4 and the slat 3 are prevented from meandering in the slat longitudinal direction and the slat longitudinal direction. Is done.

Japanese Utility Model Publication No. 64-33897 Japanese Utility Model Publication No. 62-182398

  As shown in FIG. 19, in the horizontal blind as described above, the slat 3 is in a fully closed direction (a state in which the slat convex surface is turned to the outside in a substantially vertical direction) or a reverse fully closed direction (slat convex surface). Is turned in a substantially vertical direction in a state of being on the indoor side), the interval between the warp yarns 5 of the ladder cord becomes narrower.

  However, since one warp 5 is held by the lifting / lowering cord 1 via the guide rings 6a and 6b, the interval between the warps 5 is not sufficiently narrow at the upper part of the ladder cord 4, and as a result, the slats 3 are vertically aligned. It becomes difficult to rotate. Therefore, light leakage occurs between the slats 3 in the upper portion, and the light shielding performance is lowered.

  Further, as shown in FIGS. 20A and 20B, when the slat 3 is rotated in the vertical direction, the warp 5 is pulled by the lifting / lowering cord 1 distributed before and after the slat. And a portion pulled to the outdoor side are generated. As a result, there is also a problem that the slat 3 is supported in a suspended state in a warped direction.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a horizontal blind that allows a slat to be smoothly rotated and improved in light-shielding performance in a horizontal blind that hangs along the warp of a ladder cord without inserting a lifting cord into the slat. There is to do.

In claim 1, a plurality of slats are rotatably supported from a head box via a ladder cord, and a plurality of elevating cords are provided in front of and behind the slat from a guide hole through a guide hole below the head box. In a horizontal blind that hangs down in a distributed manner, holds the warp thread of the ladder cord on the lifting cord via a holding means, and operates the lifting cord to raise and lower the slat, the ladder cord is moved from the head box to the ladder cord. The guide hole hangs at a narrower interval than the diameter of the suspension drum, and the guide hole constitutes a first space portion between the guide means and a side edge portion located inside the front-rear direction in the guide hole, A second space is formed between the guide means and a side edge located outside in the front-rear direction in the guide hole, and the guide means extends in the front-rear direction of the slat. The lifting / lowering cord hanging from one side is offset from the outer peripheral surface of the hanging drum to the center side of the hanging drum at a position aligned with one warp of the ladder cord in the front-rear direction, It was set as the structure hanging down with one warp of the said ladder cord from the space part .

According to a second aspect of the present invention, the elevating cord suspended from one of the front and rear directions of the slat is a first elevating cord, the guide means is a first guide means, and the guide hole is the first The first lifting / lowering cord is guided by the first guiding means and the first plan
A second lifting / lowering cord that hangs down from the inner hole and hangs down to the other of the slats in the front-rear direction is guided by second guiding means different from the first guiding means, and the outer peripheral surface of the suspension drum Or from the outer circumferential surface in the radial direction, depending on the other warp thread of the ladder cord and hanging from a second guide hole different from the first guide hole, and the distance from the first lifting cord, In the second guide hole, the second lifting cord is suspended from the second space portion, and the other warp of the ladder cord is the first warp It was set as the structure drooping from a space part .
According to a third aspect of the present invention, the first lifting / lowering cord is positioned on the outdoor side, and the second lifting / lowering cord is positioned on the indoor side .

According to a fourth aspect of the present invention, the first lifting / lowering cord is positioned on the indoor side, and the second lifting / lowering cord is positioned on the outdoor side .

According to a fifth aspect of the present invention, the guide means is provided on a bracket that fixes the head box to a mounting surface .

According to a sixth aspect of the present invention, the guide means is provided on an adapter attached to the outer surface of the head box .

According to a seventh aspect of the present invention, the first guiding means guides the first lifting / lowering cord and one warp of the ladder cord to a position aligned in the front-rear direction, and the second guiding means includes the second guiding means. The lifting / lowering cord and the other warp yarn of the ladder cord are guided separately in the front-rear direction .
In Claim 8, it was set as the structure which hangs down said 1st raising / lowering cord and said 2nd raising / lowering cord in the position used as the space | interval exceeding the front-back width of the said slat .

  According to the present invention, in a horizontal blind that hangs along the warp of the ladder cord without inserting the lifting / lowering cord through the slat, the slat can be smoothly rotated and the light shielding performance can be improved.

It is a front view which shows a horizontal blind. It is a side view which shows a horizontal blind. It is a perspective view which shows the state which attached the slat and the raising / lowering cord to the ladder cord. It is a bottom view which shows a supporting member. It is explanatory drawing which shows the warp yarn and the raising / lowering cord of the ladder cord penetrated to a support member. (A) (b) is explanatory drawing which shows the handling of the raising / lowering cord with respect to a supporting member. (A) (b) is a side view which shows operation | movement of a raising / lowering cord and a ladder cord. It is a perspective view which shows the relationship between a raising / lowering cord and a ladder cord. It is a side view which shows a horizontal blind. It is explanatory drawing which shows 2nd embodiment. It is explanatory drawing which shows 3rd embodiment. It is explanatory drawing which shows 4th embodiment. (A) (b) is explanatory drawing which shows 4th embodiment. (A) (b) is explanatory drawing which shows 4th embodiment. (A) (b) is explanatory drawing which shows 4th embodiment. It is explanatory drawing which shows 5th embodiment. (A) (b) is explanatory drawing which shows the handling of the raising / lowering cord with respect to the support member of 5th embodiment. It is sectional drawing which shows the supporting member which guides a raising / lowering cord and a ladder cord. (A) (b) is a side view which shows operation | movement of the horizontal blind of a prior art example. (A) (b) is a side view which shows operation | movement of the horizontal blind of a prior art example.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. In the horizontal blind shown in FIGS. 1, 2, and 9, a multi-stage slat 13 is suspended from a head box 11 via a ladder cord 12, and a bottom rail 14 is attached to the lower end of the ladder cord 12. .

  As shown in FIGS. 3 and 8, for example, five ladder cords 12 are suspended from the head box 11, and a multi-stage slat 13 is supported on the weft 15 of each ladder cord 12. Further, at the suspended position of the ladder cord 12 that supports the vicinity of both longitudinal ends of the slat 13 and the central portion in the longitudinal direction, the three lifting cords 16a to 16c are distributed from the head box 11 to the front and rear of the slat 13 and suspended. Has been.

  The lifting / lowering cords 16a to 16c have lifting / lowering cords 16a and 16c supporting both sides of the slat 13 hanging down near the warp 17a of the ladder cord 12 outside the slat 13 and supporting the center of the slat 13. Is suspended in the vicinity of the warp 17b of the ladder cord 12 on the indoor side of the slat 13.

  The lifting / lowering cords 16a and 16c are held by the warp yarns 17a by the guide rings 28a and 28b at two upper and lower positions behind the upper five-stage slats 13, and at lower positions than the upper five-stage slats 13, the lifting / lowering cords 16a and 16c are The ladder cord 12 is alternately inserted into the weft 15 in the left-right direction every predetermined number of steps.

  Similarly, the lifting / lowering cord 16b is held on the warp 17b by guide rings 28a and 28b at two upper and lower positions in front of the upper five-stage slats 13, and the lowering / lowering cord 16b is positioned below the upper five-stage slats 13 at the ladder cord 12. The weft threads 15 are alternately inserted in the left-right direction every predetermined number of stages. The bottom rail 14 is attached to the lower ends of the lifting / lowering cords 16a to 16c.

As shown in FIG. 1, support members 18 a and 18 b are attached to the suspended position of the ladder cord 12 in the head box 11.
The support member 18a rotatably supports a suspension drum 19 that supports the ladder cord 12 and a winding drum 20 that supports any one of the lifting / lowering cords 16a to 16c. The support member 18b rotatably supports only the suspension drum 19 that supports the ladder cord 12.

  The upper ends of the elevating cords 16a to 16c are attached to the take-up drum 20, and the take-up drum 20 is taken up or rewound by the rotation of the take-up drum 20. When the lifting / lowering cords 16 a to 16 c are wound around the winding drum 20, the bottom rail 14 and the slat 13 are pulled up, and when the lifting / lowering cords 16 a to 16 c are rewound from the winding drum 20, the bottom rail 14 and the slat 13 are moved. Descends.

  A suspension ring 21 formed by bending a metal wire having elasticity into a coil shape is fitted to the outer peripheral surface of the suspension drum 19, and warp threads 17 a and 17 b of the ladder cord 12 are attached to both ends of the suspension ring 21. The upper end of is attached.

  When the suspension drum 19 is rotated, the suspension ring 21 is rotated integrally, and the slat 13 is rotated via the ladder cord 12. When the slat 13 is rotated to the vertical direction, the suspending drum 19 is idled with respect to the suspending ring 21, and the slat 13 is prevented from further rotating in the same direction. .

  In the center of the suspension drum 19 and the take-up drum 20, a drive shaft 22 disposed substantially over the entire length of the head box 11 is inserted so as not to be relatively rotatable. An operating device 23 is disposed at one end of the head box 11, and an end of the drive shaft 22 is fitted to the output shaft of the operating device 23.

  The operation device 23 is provided with a pulley case 24 exposed on the front surface of the head box 11, and an endless operation cord 25 is hung on a pulley that is rotatably supported in the pulley case 24. The drive shaft 22 is rotated by an operation of the operation cord 25 via a pulley and a gear mechanism in the operation device 23.

  As shown in FIG. 4, a guide hole 26 that guides one of the ladder cord 12 and the lifting cords 16 a to 16 c to the lower side of the head box 11 is formed at the center of the head box 11 in the front-rear direction. That is, they are provided symmetrically in the front-rear direction with respect to the centers of the hanging drum 19 and the winding drum 20.

Above each guide hole 26, guide rollers 27a and 27b are rotatably supported. The rotation axis of each guide roller 27 a and 27 b is a direction along the longitudinal direction of the head box 11. The guide rollers 27a and 27b are supported above the guide holes 26 and are symmetrical with respect to the centers of the suspension drum 19 and the winding drum 20. Each guide hole 26 constitutes a first space between the guide rollers 27 a and 27 b and the side edge portion located inside the guide hole 26 in the front-rear direction, and the front and rear in the guide rollers 27 a and 27 b and the guide hole 26. A second space part is formed between the side edge part located outside the direction.

The warp yarns 17a and 17b of the ladder cords 12 are arranged on the support members 18a and 18b in the head box 11 from the suspension ring 21 through the suspension drum 19 to the inside of the guide rollers 27a and 27b , that is, the first space portion. Then, it is guided below the head box 11.

  As shown in FIGS. 6 (a) and 6 (b), the guide rollers 27 a and 27 b are arranged at intervals that are narrower than the diameter of the suspension drum 19. Then, the distance between the warp yarns 17 a and 17 b of the ladder cord 12 is narrowed to a distance narrower than the diameter of the hanging drum 19, and then guided downward of the head box 11. For this reason, when the slat 13 is rotated in the vertical direction, the distance between the warp threads 17a and 17b is narrowed by the guide rollers 27a and 27b, so that the uppermost slat 13 located immediately below the head box 11 is in the vertical direction. It is easy to turn to an angle close to.

As shown in FIGS. 5 and 6 (a), among the lifting cords 16a to 16c hanging downward from the winding drum 20, the lifting cords 16a and 16c hanging from both ends of the slat 13 are wound up. Like the warp yarn 17a, the drum 20 hangs down inside the guide roller 27b , that is , through the first space .

As shown in FIG. 5 and FIG. 6B, among the lifting cords 16 a to 16 c that are suspended downward from the winding drum 20, the lifting cord 16 b that is suspended at the central portion of the slat 13 is the winding drum 20. To the outside of the guide roller 27a, that is, the indoor side (second space portion) .

  Accordingly, the distance G between the lifting / lowering cords 16a and 16c and the lifting / lowering cord 16b guided to the lower side of the head box 11 via the guide rollers 27a and 27b is set so that both the lifting and lowering cords 16a and 16c and the lifting and lowering cord 16b are connected to the guide rollers 27a and 27b. It is narrower than when guiding downward through the outside.

  Further, the gap G is set to be slightly larger than the front-rear width of the slat 13, and even when the slat 13 is rotated in the horizontal direction, the slat 13 at the uppermost stage is connected to the lifting cords 16a and 16c and the lifting cord 16b. It is designed not to be sandwiched between them.

  The lifting / lowering cords 16a and 16c are suspended from a position offset from the outer peripheral surface of the winding drum 20 toward the center of the winding drum 20, and the lifting / lowering cord 16b is offset from the outer peripheral surface of the winding drum 20 to the outside in the radial direction. It depends from the position.

Further, the warp yarns 17a and 17b of the ladder cord 12 are suspended from a position offset from the outer peripheral surface of the hanging drum 19 toward the center side of the winding drum 20 , that is , from the first space portion .
By guiding the elevating cords 16a to 16c as described above, the elevating cords 16a to 16c are simultaneously wound or rewound based on the rotation of the winding drum 20, and the bottom rail 14 and the slat 13 are moved up and down. Is done.

Next, the operation of the horizontal blind constructed as described above will be described.
When the drive shaft 22 is rotated in the slat pulling direction by the operation of the operation cord 25, the hanging drum 19 is rotated and the slat 13 is rotated in the fully closed direction via the ladder cord 12. Further, the winding drum 20 is rotated to wind up the lifting / lowering cords 16a to 16c, and the bottom rail 14 and the slat 13 are pulled up.

  On the other hand, when the drive shaft 22 is rotated in the slat lowering direction by the operation of the operation cord 25, the hanging drum 19 is rotated and the slat 13 is rotated in the reverse fully closed direction via the ladder cord 12. Further, the winding drum 20 is rotated to rewind the lifting cords 16a to 16c, and the bottom rail 14 and the slat 13 are lowered.

  Further, after the slat 13 is pulled up or lowered to a desired height, if the operation cord 25 is operated in the reverse direction to rotate the drive shaft 22 in the reverse direction, the suspension drum 19 is rotated and the slat 13 is rotated. Can be rotated to a desired angle.

  As shown in FIG. 7A, when the slat 13 is rotated in the reverse fully closed direction, the lifting cords 16a and 16c supported by suspension from the support members 18a on both sides of the head box 11 are located inside the guide roller 27b. Therefore, the lifting / lowering cords 16 a and 16 c are suspended near the warp yarns 17 a of the ladder cord 12.

  Therefore, since the warp 17a is not pulled in the direction away from the warp 17b, the uppermost slat 13 positioned immediately below the head box 11 is rotated to an angle close to the vertical direction.

  Similarly, when the slat 13 is rotated in the fully closed direction, the warp yarn 17a is not pulled in the direction away from the warp yarn 17b in the same manner, so that the uppermost slat 13 located directly below the head box 11 is vertical. It is rotated to an angle close to the direction.

  As shown in FIG. 7B, the lifting / lowering cord 16b that hangs down in the center in the longitudinal direction of the slat 13 hangs down through the outside of the guide roller 27a. When rotated in the direction, the warp 17b is pulled away from the warp 17a via the guide rings 28a, 28b.

  However, since the distance between the lifting / lowering cords 16a and 16c and the lifting / lowering cord 16b is held at the gap G and is narrower than that of the conventional example immediately below the head box 11, the warp in the longitudinal direction of the slat 13 generated in the conventional example. Is unlikely to occur.

With the horizontal blind configured as described above, the following effects can be obtained.
(1) Since the lifting / lowering cords 16a to 16c are not inserted into the slat 13 and are hanged from the head box 11 to the indoor side and the outdoor side of the slat 13, the slat 13 can be easily rotated in the vertical direction and the horizontal direction. Therefore, the light shielding performance when the slat 13 is fully closed and reverse fully closed can be improved.
(2) The warp yarns 17a and 17b of the ladder cord 12 are suspended by guide rollers 27a and 27b provided on the support members 18a and 18b so as to be narrowed to an interval narrower than the front and rear width of the slats 13. Then, regardless of the diameter of the suspension drum 19 of the ladder cord 12, the distance between the warp threads 17a and 17b can be narrowed when the slat 13 is fully closed and reverse fully closed, so that the slat 13 can be moved vertically and horizontally. Easy to rotate. Therefore, the light shielding performance when the slat 13 is fully closed and reverse fully closed can be improved.
(3) The elevating cords 16a and 16c suspended downward from the slat 13 are suspended downward along with the warp 17a from the winding drum 20 through the inside of the guide roller 27b, so that the slat 13 is fully closed and reverse fully closed. Sometimes the warp 17a is not pulled to the outdoor side by the elevating cords 16a and 16c via the guide rings 28a and 28b. Then, when the slat 13 is fully closed and reversely fully closed, an increase in the distance between the warp threads 17a and 17b immediately below the head box 11 is prevented, and the uppermost slat 13 is rotated vertically and horizontally. easy. Therefore, the light shielding performance when the slat 13 is fully closed and reverse fully closed can be improved.
(4) The lifting / lowering cord 16b hanging down on the room side of the slat 13 is hung downward through the outside of the guide roller 27a, that is, the room side, and the distance between the lifting / lowering cords 16a and 16c is larger than the front and rear width of the slat 13. G is secured. Accordingly, when the slat 13 is in the horizontal direction, the uppermost slat 13 is not sandwiched between the lifting / lowering cords 16a and 16c and the lifting / lowering cord 16b.
(5) When the slat 13 is fully closed and reversely fully closed, the warp 17a is not pulled to the outdoor side by the lifting cords 16a and 16c. Therefore, when the slat 13 is fully closed and reverse fully closed, the occurrence of warpage in the front-rear direction in the slat 13 can be suppressed.
(Second embodiment)
FIG. 10 shows a second embodiment. In this embodiment, the guide hole 26 of the support member 18a is provided with a partition 31 that divides the guide hole 26 into left and right. The warp yarns 17 a of the ladder cord 12 and the lifting cords 16 a and 16 c are inserted into the left and right sides of the partition 31, respectively. Other configurations are the same as those of the first embodiment.

With such a configuration, it is possible to prevent an increase in operating force due to friction between the lifting / lowering cords 16a and 16c and the warp yarns 17a of the ladder cord 12 and wear of the lifting / lowering cords 16a and 16c and the warp yarns 17a when the slats 13 are lifted and lowered. .
(Third embodiment)
FIG. 11 shows a third embodiment. In this embodiment, a guide hole 32 for inserting the lifting / lowering cords 16a and 16c and a guide hole 33 for inserting the warp yarns 17a of the ladder cord 12 are provided independently in the support member 18a. Other configurations are the same as those of the first embodiment.

With such a configuration, it is possible to prevent an increase in operating force due to friction between the lifting / lowering cords 16a and 16c and the warp yarns 17a of the ladder cord 12 and wear of the lifting / lowering cords 16a and 16c and the warp yarns 17a when the slats 13 are lifted and lowered. .
(Fourth embodiment)
12 to 15 show a fourth embodiment. In this embodiment, the elevating cord is guided downward by a guide means different from the guide rollers 27a and 27b provided on the support member 18a, and the same effect as that of the first embodiment is obtained. . The configuration of the slat that is suspended and supported from the head box via the ladder cord is the same as that of the first embodiment.

  In FIG. 12, a guide roller 35 is provided on a bracket 34 for fixing the head box 11 to the mounting surface, and the lifting / lowering cords 16a and 16c are suspended from the winding drum 20 through the guide roller 35 to the vicinity of the warp 17a of the ladder cord. Is.

13 (a) and 13 (b), the lifting / lowering cords 16a to 16c are suspended downward through adapters 36 and 37 provided on the outer surface below the bottom of the head box 11. FIG.
As shown in FIG. 13 (a), the lifting / lowering cord 16b is guided from the winding drum 20 in the head box 11 to the adapter 36 through a guide roller 41 provided at a substantially central portion in the front-rear direction of the support member 18a. It hangs downward from the adapter 36. And the raising / lowering cord 16b is hung in the position which left | separated from the warp yarn of the ladder cord a little indoors.

  As shown in FIG. 13B, the lifting / lowering cords 16 a and 16 c are guided from the winding drum 20 in the head box 11 through the guide roller 41 to the adapter 37, and are suspended downward from the adapter 37. And the raising / lowering cords 16a and 16c are drooped close to the warp yarn on the outdoor side of the ladder cord.

14 (a) and 14 (b) show that the elevating cords 16a and 16c are suspended downward via an adapter 38 provided below the bottom of the head box 11. FIG.
As shown in FIG. 14 (a), the lifting / lowering cord 16 b is suspended downward from the winding drum 20 in the head box 11. And the raising / lowering cord 16b is hung in the position which left | separated from the warp yarn of the ladder cord a little indoors.

  As shown in FIG. 14 (b), the lifting / lowering cords 16 a and 16 c are guided from the winding drum 20 in the head box 11 to an adapter 38 provided below the bottom of the head box 11, and are suspended downward from the adapter 38. ing. And the raising / lowering cords 16a and 16c are drooped close to the warp yarn on the outdoor side of the ladder cord.

  15 (a) and 15 (b) show a lift cord 16a, a first adapter 39 provided above the head box 11, and a second adapter 40 provided below one side of the bottom of the head box 11. 16c is suspended downward.

  As shown in FIG. 15 (a), the lifting / lowering cord 16 b is suspended downward from the winding drum 20 in the head box 11 as it is. And the raising / lowering cord 16b is hung in the position which left | separated from the warp yarn of the ladder cord a little indoors.

  As shown in FIG. 15 (b), the lifting / lowering cords 16 a and 16 c extend downward from the winding drum 20 in the head box 11 to the outdoor side of the head box 11 via a first adapter 39 provided above the head box 11. To be guided to.

  The elevating cords 16a and 16c are guided by a second adapter 40 provided on one side of the bottom side of the head box 11, and are suspended downward from the second adapter 40. And the raising / lowering cords 16a and 16c are drooped close to the warp yarn on the outdoor side of the ladder cord.

If the elevating cords 16a to 16c are guided as described above and hung down to a position close to one warp yarn of the ladder cord and a position slightly separated from the other warp yarn, the same effect as the first embodiment is obtained. be able to.
(Fifth embodiment)
16 to 18 show a fifth embodiment. In this embodiment, the lifting / lowering cords 16a and 16c suspended from the outdoor side are suspended at a position slightly separated from the warp 17a of the ladder cord 12, and the lifting / lowering cord 16b is suspended near the warp 17b. Other configurations are the same as those of the first embodiment.

  As shown in FIGS. 16 and 17 (a), the lifting / lowering cords 16a and 16c are hung downward from the winding drum 20 through the outside of the guide roller 27b, and are slightly separated from the warp yarns 17a of the ladder cord 12. Drooped into.

  As shown in FIGS. 16 and 17 (b), the lifting / lowering cord 16b is hung downward from the winding drum 20 through the indoor side of the guide roller 27a and hung near the warp 17b. The lifting / lowering cord 16b is in a state of being guided downward through an edge on the center side in the front-rear direction of the head box 11 of the guide hole 26 positioned below the guide roller 27a. The position of the edge of the guide hole 26 is such that the distance between the lifting / lowering cords 16a and 16c and the lifting / lowering cord 16c is larger than the front and rear width of the slat 13 at the position where the uppermost slat 13 is suspended and supported. Is set.

  With such a configuration, the lifting / lowering cord 16b hanging down indoors among the lifting / lowering cords 16a to 16c is suspended directly under the head box 11 and in the vicinity of the warp 17b of the ladder cord 12, so that it is the same as in the first embodiment. Effects can be obtained. Further, when the slat 13 is in the horizontal direction, the uppermost slat 13 is not sandwiched between the lifting / lowering cords 16a and 16c and the lifting / lowering cord 16b.

You may implement the said embodiment in the following aspects.
-There may be two or four lifting cords that are hanged down before and after the slats.
The guide rollers 27a and 27b may guide the ladder cord warps 17a and 17b at an interval equivalent to the front and rear width of the slats.
-It can also be implemented in an electric horizontal blind that drives the drive shaft with a motor.
-In 1st embodiment, the space | interval of the raising / lowering cord 16a, 16c and the raising / lowering cord 16b does not necessarily need to exceed the front-back width of the slat 13. FIG. Smooth adjustment of the slats by adjusting the bending strength of the slats 13, the amount of friction between the elevating cord and the slat edge, the driving force for rotating the slats with the ladder cord, and the distance between the elevating cords in the longitudinal direction of the slats And deformation of the slats may be prevented.

  DESCRIPTION OF SYMBOLS 11 ... Head box, 12 ... Ladder cord, 13 ... Slat, 16a-16c ... 1st raising / lowering cord, 2nd raising / lowering cord, 17a, 17b ... Warp, 18a, 18b ... Supporting member, 19 ... Hanging drum, 20 ... take-up drum, 26 ... guide hole, 27a, 27b ... guide means (first guide roller, second guide roller), 28a, 28b ... holding means (guide ring), 36-40 ... adapter.

Claims (8)

A plurality of slats are rotatably supported from the head box via a ladder cord, and a plurality of lifting cords are distributed from the guide hole to the front and rear of the slat by way of guide means downward from the head box. In the horizontal blind that holds the warp yarn of the ladder cord on the lifting cord via a holding means, and operates the lifting cord to raise and lower the slat,
The ladder cord hangs from the head box at a distance narrower than the diameter of the suspension drum of the ladder cord,
The guide hole constitutes a first space between the guide means and a side edge portion located on the inner side in the front-rear direction of the guide hole, and is positioned on the outer side of the guide means and the guide hole in the front-rear direction. Configure a second space between the side edge and
The guide means is a position where an elevating cord suspended in one of the front and rear directions of the slat is aligned with one warp of the ladder cord in the front and rear direction and from the outer peripheral surface of the suspension drum. The horizontal blind is characterized in that it is offset to the center side of the ladder and hangs down together with one warp of the ladder cord from the first space portion .   The lifting / lowering cord that hangs down in any one of the front and rear directions of the slat is a first lifting / lowering cord,
  The guide means is a first guide means,
  The guide hole is a first guide hole,
  The first lifting / lowering cord is guided by the first guiding means and hangs down from the first guiding hole,
  The second lifting / lowering cord hanging from the other of the slats in the front-rear direction is guided by second guiding means different from the first guiding means and is the same as the outer peripheral surface of the suspension drum or the outer peripheral surface The second cord is suspended from the second guide hole different from the first guide hole together with the other warp thread of the ladder cord, and the distance between the first lift cord and the slat is rotated. With an unhindered interval,
  In the second guide hole, the second elevating cord hangs from the second space portion, and the other warp thread of the ladder cord hangs from the first space portion.
  The horizontal blind according to claim 1.   The first lifting / lowering cord is located on the outdoor side,
  The second lifting / lowering cord is located on the indoor side
  The horizontal blind according to claim 2.   The first lifting / lowering cord is located on the indoor side,
  Said 2nd raising / lowering cord is located in the outdoor side
  The horizontal blind according to claim 2.   The guide means is provided on a bracket for fixing the head box to a mounting surface.
  The horizontal blind according to claim 1.   The guide means is provided on an adapter attached to the outer surface of the head box.
  The horizontal blind according to claim 1.   The first guiding means guides the first lifting / lowering cord and one warp of the ladder cord to a position aligned in the front-rear direction,
  The second guiding means guides the second lifting / lowering cord and the other warp of the ladder cord with a separation in the front-rear direction.
  The horizontal blind according to claim 2.   The first elevating cord and the second elevating cord are suspended at a position that exceeds the front-rear width of the slat.
  The horizontal blind according to claim 7.