JP2012052317A - Slat angle adjustment device of horizontal blind - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a slat angle adjustment device of a horizontal blind, capable of surely and smoothly turning slats in the vertical direction.SOLUTION: In the horizontal blind, slats 4 in many stages are suspended and supported from a head box 1 through a ladder cord 3, a bottom rail 10 is supported at the lower ends of warps 8a and 8b of the ladder cord 3, and the slats 4 are turned through the ladder cord 3 on the basis of the operation of an operation device 5. The horizontal blind includes load moving devices 7, 8a, 8b and 13 for making the entire load of the bottom rail 10 acting on the warps 8a and 8b act on the warps positioned on the upper surface side of the slats 4 when the slats 4 are turned to a fully closed state and an inversely fully closed state.

Description

  The present invention relates to a horizontal blind slat angle adjusting device.

  The horizontal blind is supported by a ladder cord suspended from the head box, and a plurality of slats are supported. By rotating each slat in the same phase via the tilt device and the ladder cord in the head box, The amount of light extraction can be adjusted.

  In such a horizontal blind, the bottom rail is suspended and supported at the lower end of the lifting / lowering cord for raising and lowering the slat, and the lower end of the ladder cord is attached to the bottom rail. When the slat is rotated, the bottom rail is also rotated in the same phase as the slat.

Reality 7-52960 Reality 6-26717

  In the horizontal blind as described above, when the slat is lowered to the lower limit, the weight of the bottom rail acts on the warp of the ladder cord. Then, when the slat is rotated to the fully closed state or the reverse fully closed state, the weight of the bottom rail acts in a direction that prevents the slat from rotating, so that the slat is reliably rotated to the fully closed state or the reverse fully closed state. There is a problem that cannot be done.

  Patent Document 1 discloses a horizontal blind in which a vertical cord of a ladder cord is connected to a bottom drum of a bottom rail so that the slat is rotated in the vertical direction.

  However, since the weight of the bottom rail still acts on both vertical cords of the ladder cord, the slat cannot be reliably rotated to the fully closed state or the reverse fully closed state. Further, since the lowermost slat is sandwiched between the two vertical cords, the smooth rotation operation of the slat is hindered.

  Patent Document 2 discloses a configuration in which a weight is suspended and supported via a plate member and an arch at a lower end of a vertical cord of a ladder cord to improve a tilting failure of a slat. However, when the slat is rotated in the vertical direction, the weight of the weight cannot be applied only to one of the vertical cords, so that the slat cannot be reliably rotated to the fully closed state or the reverse fully closed state.

In addition, when the weight cannot be moved smoothly along the arch, the slat cannot be rotated smoothly.
An object of the present invention is to provide a slat angle adjusting device for a horizontal blind in which the slat can be reliably and smoothly rotated in the vertical direction.

  In claim 1, a plurality of slats are suspended and supported from a head box via a ladder cord, a bottom rail is supported at a lower end of a warp of the ladder cord, and the ladder cord is interposed based on an operation of the operation device. In the horizontal blind that rotates the slat, when the slat is rotated in the fully closed state and the reverse fully closed state, the total load of the bottom rail that acts on the warp is applied to the warp located on the upper surface side of the slat. A load transfer device was provided.

  The load moving device according to claim 2, wherein the bottom rail is suspended and supported at the lower end of one warp of the ladder cord, and the lift cord for raising and lowering the slat is passed through the bottom rail to the other warp of the ladder cord. Connected to.

According to a third aspect of the present invention, the bottom rail includes a guide shaft that smoothly guides the elevating cord.
According to a fourth aspect of the present invention, the lifting / lowering cord is inserted into a loop provided on the one warp and guided to the bottom rail.

  According to a fifth aspect of the present invention, when the slat is in a fully closed state or a reverse fully closed state, an interval between the warp threads that rotate the slat in a vertical direction is set by a distance of an outlet from the bottom rail of the lifting cord.

  ADVANTAGE OF THE INVENTION According to this invention, the slat angle adjustment apparatus of the horizontal blind which made the slat rotate reliably and smoothly to the orthogonal | vertical direction can be provided.

It is a side view which shows the horizontal blind of 1st embodiment. It is a side view which shows operation | movement of the slat angle adjustment apparatus of 1st embodiment. It is a side view which shows operation | movement of the slat angle adjustment apparatus of 1st embodiment. It is a side view which shows the slat angle adjustment apparatus of 1st embodiment. It is a side view which shows the horizontal blind of 2nd embodiment. It is a side view which shows operation | movement of the slat angle adjustment apparatus of 2nd embodiment. It is a side view which shows operation | movement of the slat angle adjustment apparatus of 2nd embodiment.

(First embodiment)
Hereinafter, a first embodiment of a horizontal blind slat angle adjusting device embodying the present invention will be described with reference to the drawings.

  In the horizontal blind shown in FIG. 1, a head box 1 is fixed to a mounting surface such as a window frame via a mounting bracket 2, and multiple slats 4 are suspended from the head box 1 via at least two ladder cords 3. Supported below.

  An operating device 5 is attached to one end of the head box 1, and an endless ball chain 6 is suspended in front of the slat 4 from a pulley rotatably supported in the operating device 5.

  When the pulley is rotated based on the operation of the ball chain 6, the drive shaft rotatably supported in the head box 1 is rotationally driven via a transmission gear in the operation device 5. Then, the slat 4 is rotated via the ladder cord 3 based on the rotation of the drive shaft, and the slat 4 and the bottom rail 10 are raised and lowered via at least two lifting cords 7.

  For example, when the ball chain 6 is pulled in the direction of arrow A, the warp yarn 8b is pulled up by the tilt mechanism in the head box 1 and the warp yarn 8a is lowered so that the slat 4 is in the reverse fully closed direction shown in FIG. Is rotated in the direction toward the indoor side. When the ball chain 6 is continuously pulled in the direction of arrow A, the lifting / lowering cord 7 is wound up by the lifting / lowering cord winding device in the head box 1 and the bottom rail 10 and the slat 4 are pulled up.

  When the ball chain is pulled in the direction of arrow B, the warp yarn 8a is pulled up by the tilt mechanism in the head box 1 and the warp yarn 8b is lowered so that the slat 4 is in the fully closed direction shown in FIG. It is turned in the direction. Further, the lifting / lowering cord 7 is rewound by the lifting / lowering cord winding device in the head box 1, and the bottom rail 10 and the slat 4 are lowered.

  As shown in FIG. 4, the lower end of the warp yarn 8b of the ladder cord 3 is inserted into the middle portion in the front-rear width direction of the rectangular tube-shaped bottom rail 10, and the knot ball 11 is formed in the bottom rail 10, and the bottom The rail 10 is suspended and supported by the knotting ball 11 at the lower end of the warp yarn 8b.

  The lifting / lowering cord 7 is suspended from the head box 1 along the warp yarns 8b located on the outdoor side of the warp yarns 8a and 8b of the ladder cord 3, and is inserted through a plurality of loops 12 provided on the warp yarns 8b.

  The lifting / lowering cord 7 is inserted into the bottom rail 10 and led out to the front of the bottom rail 10 through a guide shaft 13 provided in the bottom rail 10, and an end portion of the lifting / lowering cord 7 is connected to the warp thread 8 a with a joint fitting 14. It is fixed with.

  The guide shaft 13 is attached to the upper indoor corner of the bottom rail 10, and the guide surface for guiding the lifting / lowering cord 7 is an arc surface so as to reduce friction with the lifting / lowering cord 7. . The lifting / lowering cord 7 is guided to the outside of the bottom rail 10 through the guide surface of the guide shaft 13, and the distance between the outlets for leading the lifting / lowering cord 7 is formed to be approximately equal to the diameter of the guide shaft 13.

The joint fitting 14 is attached at a position where the joint fitting 14 does not interfere with the bottom rail 10 even if the lifting / lowering cord 7 moves in the direction of arrow C when the slat 4 is rotated.
Next, the rotation operation of the slat in the state where the slat 4 is lowered to the lower limit in the horizontal blind configured as described above will be described.

  When the ball chain 6 is operated in the direction of arrow B to lower the slat 4, the slat 4 is lowered in the fully closed state shown in FIG. When the bottom rail 10 is lowered to the lower limit, the bottom rail 10 is suspended and supported by the warp 8b located on the convex side of the slat 4, and the lifting cord 7 is loosened between the bottom rail 10 and the joint fitting 14. In this state, the load of the bottom rail 10 does not act on the warp 8a.

  Then, the warp yarns 8a are sufficiently pulled up by the tilt mechanism, while the warp yarns 8b are pulled down by the load of the bottom rail 10, so that each slat 4 is rotated almost vertically and is surely fully closed.

  When the ball chain 6 is operated in the arrow A direction from the state shown in FIG. 2, the warp yarn 8b is pulled up by the tilt mechanism, the warp yarn 8a is lowered, and the bottom rail 10 is wound up. Then, as shown in FIG. 1, each slat 4 is rotated in the horizontal direction, and the lifting / lowering cord 7 between the joint fitting 14 and the bottom rail 10 moves in the arrow C direction.

  When the ball chain 6 is further operated in the arrow A direction from the state shown in FIG. 1, the warp yarn 8b is further pulled up, the warp yarn 8a is lowered, and the elevating cord 7 is wound up. And the load of the bottom rail 10 acts on the vertical thread 7 and the warp 8a located in the convex surface side of the slat 4, and does not act on the warp 8b.

  Then, the warp yarn 8b is sufficiently pulled up by the tilt mechanism, and the distance between the warp yarns 8a, 8b approaches the distance of the exit from the bottom rail 10 of the lifting / lowering cord 7, so that each slat 4 is rotated to a substantially vertical direction to be sure. It will be in the reverse fully closed state.

When the ball chain 6 is further operated in the arrow A direction from this state, the lifting / lowering cord 7 is pulled up and the slats 4 are sequentially pushed up by the bottom rail 10.
When the ball chain 6 is operated in the arrow B direction from the state shown in FIG. 3, the state shown in FIG. 1 returns to the state shown in FIG.

In the horizontal blind slat angle adjusting apparatus configured as described above, the following operational effects can be obtained.
(1) When the slat 4 and the bottom rail 10 are lowered to the lower limit and the slat 4 is in the fully closed state and the reverse fully closed state, the slat 4 is rotated to an angle close to the vertical direction to improve the shielding performance. Can be made.
(2) When the slat 4 and the bottom rail 10 are lowered to the lower limit and the slat 4 is fully closed or reverse fully closed, the load of the bottom rail 10 is applied only to one of the warp threads 8a and 8b of the ladder cord 3. Therefore, the shielding performance can be improved by rotating the lower slat 4 to an angle close to the vertical direction.
(3) When the slat 4 and the bottom rail 10 are lowered to the lower limit and the slat 4 is fully closed or reverse fully closed, the distance between the warp threads 8a and 8b of the ladder cord 3 is set to the bottom rail of the lift cord 7. The distance from the exit to 10 can be reduced. Therefore, when the distance of the exit of the lifting / lowering cord 7 from the bottom rail 10 is set equal to the distance between the warps 8a and 8b that can rotate the slats 4 to an angle close to the vertical direction, the lower slats 4 are particularly vertically The shielding property can be improved by rotating the lens to an angle close to the direction.
(4) By making the outer peripheral surface of the guide shaft 13 on which the elevating cord 7 slides into an arc surface, the slat 4 can be rotated smoothly.
(5) The bottom rail 10 can have an arbitrary shape as long as the rigidity that allows the slats 4 to be pushed up is secured.
(6) Since the lifting / lowering cord 7 is not inserted into the slat 4, when the slat 4 is fully closed or reverse fully closed, the slat 4 can be rotated almost vertically without being obstructed by the lifting / lowering cord 7. it can.
(7) Since there is no need to provide an insertion hole for inserting the lifting / lowering cord 7 in the slat 4, light leakage from the insertion hole does not occur.
(Second embodiment)
5 to 7 show a second embodiment. This embodiment is different from the first embodiment only in that the elevating cord 7 suspended from the elevating cord winding device in the head box 1 is inserted into the insertion hole of each slat 4, and the other configurations are as follows. This is the same as in the first embodiment.

The lower end portion of the lifting / lowering cord 7 is connected to the warp yarn 8a by a joint fitting 14 through a guide shaft 13 in the bottom rail 10.
With such a configuration, when the slat 4 is lowered to the lower limit and fully closed, the load of the bottom rail 10 acts only on the warp 8b as shown in FIG. Further, when the slat 4 is lowered to the lower limit to be in the reverse fully closed state, as shown in FIG. 7, the load of the bottom rail 10 acts only on the warp 8a.

Therefore, the same effects as the effects (1) to (5) obtained in the first embodiment can be obtained.
You may implement the said embodiment in the following aspects.
The bottom rail 10 may suspend and support a plurality of bottom rails for each ladder cord 3.

  DESCRIPTION OF SYMBOLS 1 ... Head box, 3 ... Ladder cord, 4 ... Slat, 7 ... Load moving device (elevating cord), 8a, 8b ... Load moving device (warp), 10 ... Bottom rail, 12 ... Loop, 13 ... Load moving device ( Guide shaft).

Claims (5)

A plurality of slats are suspended and supported from a head box via a ladder cord, a bottom rail is supported at the lower end of the warp of the ladder cord, and the slat is rotated via the ladder cord based on an operation of an operating device. In horizontal blinds,
When the slat is rotated to a fully closed state and a reverse fully closed state, a load moving device is provided that applies the total load of the bottom rail acting on the warp to the warp located on the upper surface side of the slat. Horizontal blind slat angle adjuster. The load transfer device is
The bottom rail is suspended and supported at the lower end of one warp of the ladder cord, and a lifting cord for raising and lowering the slat is connected to the other warp of the ladder cord via the bottom rail. The horizontal blind slat angle adjusting device as described.   The horizontal blind slat angle adjusting device according to claim 2, wherein the bottom rail includes a guide shaft for smoothly guiding the elevating cord.   4. The horizontal blind slat angle adjusting device according to claim 2, wherein the elevating cord is inserted into a loop provided in the one warp and guided to the bottom rail.   When the slat is in a fully closed state or a reverse fully closed state, an interval between the warp threads that rotate the slat in a vertical direction is set by a distance of an exit from a bottom rail of the lifting / lowering cord. Item 4. A slat angle adjusting device for a horizontal blind according to Item 3.

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