JP2008274594A - Horizontal blind slat angle adjustment device - Google Patents

Abstract

Provided is a horizontal blind slat angle adjusting device that can independently adjust the angle of upper and lower slats without interfering with each other and can prevent assembly of a ladder cord warp while facilitating assembly. To do.
SOLUTION: Multiple slats are suspended and supported from a head box via ladder cords, and upper slats and lower slats are suspended and supported by different ladder cords, and upper slats and lower slats are supported. In a horizontal blind in which the angle of the slats of the upper part can be adjusted at different angles, the upper slat 2a is supported by the first ladder cord 7, and the lower slat is supported by the third ladder cord. The ladder cord was suspended and supported from the head box by a second ladder cord 9 having a weft 9a longer than the weft of the third ladder cord.
[Selection] Figure 3

Description

  The present invention relates to a horizontal blind slat angle adjusting device in which an upper slat and a lower slat can be adjusted to different angles.

  As one type of horizontal blind, there is one in which the angle of the upper slat and the lower slat can be adjusted separately from among the multi-stage slats suspended from the head box via a ladder cord.

  In such a horizontal blind, the upper slats and the lower slats are suspended and supported by independent ladder cords, and the upper and lower slats are made independent by operating each ladder cord separately. The angle can be adjusted.

Further, in order to prevent an unnecessary operation of the upper slat due to the operation of the ladder cord that supports the lower slat, the weft is cut off at the upper part of the ladder cord.
JP 2006-183249 A

  In the horizontal blind as described above, the upper weft thread of the ladder cord that supports the lower slats is cut, so when all the slats are pulled up to the vicinity of the head box, the upper part of the ladder cord warp that supports the lower slats is It hangs down from both sides of the slat, which is not preferable from the viewpoint of beauty.

  In the horizontal blind described in Patent Literature 1, the lower slat group is pulled up to the vicinity of the head box by connecting the warp of the ladder cord that supports the lower slat group to the ladder cord that supports the upper slat group by the connecting string portion. The structure which prevents the warp thread of the ladder cord which supports a lower slat group in the state which fell in the state which hung down is disclosed.

  However, since it is necessary to connect the upper ladder cord and the lower ladder cord with the connecting string portion, the assembly man-hour increases and the manufacturing cost increases, and the connecting string portion is exposed to the front side of the slat, and the aesthetic appearance is increased. Not preferable.

  The object of the present invention is to adjust the slat angle of a horizontal blind that can adjust the slats of the upper and lower tiers at different angles without interfering with each other and can prevent the warp of the ladder cord from hanging while facilitating assembly. To provide an apparatus.

  In claim 1, a plurality of slats are suspended and supported from a head box via a ladder cord, and an upper slat and a lower slat are suspended and supported by separate ladder cords. In the horizontal blind in which the lower slat can be adjusted to different angles, the upper slat is supported by the first ladder cord, the lower slat is supported by the third ladder cord, and the third ladder is supported. The cord was suspended and supported from the head box by a second ladder cord having a weft longer than that of the third ladder cord.

According to a second aspect of the present invention, the weft yarn of the second ladder cord is longer than the length connecting the weft yarn of the first ladder cord with a diagonal line.
According to a third aspect of the present invention, the weft yarn of the second ladder cord is positioned in the middle of each slat of the upper stage portion.

According to a fourth aspect of the present invention, the weft thread of the second ladder cord is provided for each of a plurality of stages of the slats of the upper stage part.
According to a fifth aspect, the upper slat and the lower slat are rotated at different rotation speeds in the same direction.

According to a sixth aspect of the present invention, the rotational speed of the upper slat is lower than the rotational speed of the lower slat.
According to a seventh aspect of the present invention, the first ladder cord is provided with a weft for supporting the upper slats in the vertical direction.

  According to the present invention, it is possible to adjust the slats of the upper and lower tiers at different angles without interfering with each other, and to adjust the slat angle of the horizontal blind that can prevent the warp of the ladder cord from hanging while facilitating assembly. An apparatus can be provided.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the horizontal blind shown in FIG. 1, a multi-stage slat 2 a at the upper stage from the head box 1 and a multi-stage slat 2 b at the lower stage are suspended and can be individually adjusted in angle.

  More specifically, a drive shaft 3a is rotatably supported in the head box 1 and is driven to rotate by a motor 4a. A plurality of pulleys 5a are fitted on the drive shaft 3a, and a tilt tape 6a is hung on each pulley 5a. The first ladder cord 7 is suspended from each tilt tape 6a, and the slat 2a is supported by the first ladder cord 7.

  An intermediate bottom bar 8 is suspended and supported at the lower end of the first ladder cord 7. When the drive shaft 3a is rotated, the slats 2a are rotated in the same phase via the first ladder cord 7. Further, after each slat 2a is rotated to a substantially vertical direction, the pulley 5a is idled with respect to the tilt tape 6a so that the slat 2a is not further rotated in the same direction.

  A drive shaft 3b is rotatably supported in the head box 1 and is driven to rotate by a motor 4b. A plurality of pulleys 5b having the same diameter as the pulley 5a are fitted on the drive shaft 3b, and tilt tapes 6b are respectively hooked on the pulleys 5b. A second ladder cord 9 is suspended and supported from the tilt tape 6 b, and a third ladder cord 10 is connected to the lower end of the second ladder cord 9 via a connector 13.

The lower ladder slat 2 b is supported by the third ladder cord 10, and the bottom bar 11 is suspended and supported by the lower end of the third ladder cord 10.
The first ladder cord 7 and the third ladder cord 10 are ladder cords having the same configuration, and the length of the weft, in other words, the distance between the warps, is substantially equal to the width of the slats 2a and 2b.

  As shown in FIG. 5, the length of the weft 9a of the second ladder cord 9 is longer than the length L connecting the weft of the first ladder cord 7 with a diagonal line, and is wider than the slats 2a and 2b. This is a ladder cord for supporting the slats.

  As shown in FIGS. 2 to 4, the second ladder cord 9 is connected to the tilt tape 6 b so that the weft thread 9 a is located in the middle of the slat 2 a supported by the first ladder cord 7. Yes.

  The pulley 5a and the pulley 5b are provided at a predetermined interval in the head box 1, and the tilt tapes 6a and 6b and the first and second ladder cords 7 supported by being suspended by the tilt tapes 6a and 6b, 9 do not interfere with each other.

  When the drive shaft 3b is rotated, the slats 2b are rotated in the same phase via the second and third ladder cords 9 and 10. Further, after each slat 2b is rotated to a substantially vertical direction, the pulley 5b is idled with respect to the tilt tape 6b so that the slat 2b is not further rotated in the same direction.

  As shown in FIG. 6, at the position where the second ladder cord 9 is suspended and supported, a notch 13 is formed in the lower slat of the slat 2a and the edge of the intermediate bottom bar 8. When the slat 2b is rotated in the vertical direction while the slat 2a is held in the horizontal direction, the warp yarn of the second ladder cord 9 moves into the notch 13 and the interval is narrowed. The slats 2b can be easily rotated in the vertical direction.

  Each pulley 5b has an upper end portion of a lifting tape 12 wound around, and each lifting tape 12 passes through the slat 2a, the intermediate bottom bar 8 and the slat 2b, and the bottom bar 11 is supported by being suspended at the lower end thereof.

  When the pulley 5b is rotated in the winding direction of the elevating tape 12 based on the rotation of the drive shaft 3b, the bottom bar 11 is pulled up and the slats 2b and 2a are sequentially lifted by the bottom bar 11. Further, when the pulley 5b is rotated in the rewinding direction of the elevating tape 12, the bottom bar 11 is lowered, and the slats 2a and 2b are sequentially returned to the state supported by the first and third ladder cords 7 and 10. .

  The operations of the motors 4a and 4b are controlled by a controller (not shown) to drive the drive shafts 3a and 3b in the same direction and at the same rotational speed, and the second drive shaft 3b is connected to the first drive shaft 3a. The second drive shaft 3b can be rotationally driven at a speed five times faster, or the second drive shaft 3b can be rotationally driven at a speed 0.7 times faster than the first drive shaft 3a.

  Next, the operation of the horizontal blind constructed as described above will be described. When the drive shaft 3 a is rotated by the operation of the motor 4 a, the angle of the upper slat 2 a is adjusted via the first ladder cord 7. When the drive shaft 3b is rotated by the operation of the motor 4b, the angle of the lower slat 2b is adjusted via the second ladder cord 9 and the third ladder cord 10.

By such an operation, the upper slat 2a and the lower slat 2b can be adjusted at different angles.
During the angle adjustment operation as described above, when the angle of the upper slat 2a is adjusted, the weft thread 9a of the second ladder cord 9 is in a slack state between the slats 2a. It does not hinder movement.

  FIG. 7 shows the operation of the slats 2a and 2b when the rotation speed of the upper slat 2a is controlled to be 0.7 times the rotation speed of the lower slat 2b. In the figure, the slats 2a and 2b are shown as flat slats for convenience.

  As shown in FIG. 7A, when the slats 2a and 2b in the fully closed state are rotated, the slats 2b are rotated in advance of the slats 2a as shown in FIGS. Is done. Then, as shown in FIG. 7 (f), the slats 2a and 2b are eventually rotated in the reverse direction until they are fully closed.

  During such an angle adjustment operation, the weft thread 9a of the second ladder cord 9 is loosened between the slats 2a, and the weft thread 9a of the second ladder cord 9 is rotated prior to the rotation of the slat 2a. Therefore, the rotation of the slat 2a is not hindered.

FIG. 8 shows the operation of the slats 2a and 2b when the rotation speed of the upper slat 2a is controlled to be 1.5 times the rotation speed of the lower slat 2b.
As shown in FIG. 8A, when the slats 2a and 2b in the fully closed state are rotated, as shown in FIGS. 8B to 8E, the slat 2a is rotated in advance of the slat 2b. Is done. Then, as shown in FIG. 8 (f), the slats 2a and 2b are eventually rotated in the reverse direction until they are fully closed.

  During such an angle adjustment operation, the weft thread 9a of the second ladder cord 9 is loosened between the slats 2a and is rotated in the same direction as the slats 2a, so that the rotation of the slats 2a is not hindered. .

  When the drive shaft 3b is rotated in the winding direction of the elevating tape 12, the bottom bar 11 is pulled up, and the slats 2b and 2a are sequentially pulled up from the lower stage. When the drive shaft 3b is rotated in the rewinding direction of the elevating tape 12, the bottom bar 11 is lowered and the slats 2a and 2b are returned to the state supported by the first and third ladder cords 7 and 10.

  At the time of the raising / lowering operation of the slats 2a, 2b, since the warp yarn is connected to the second ladder cord 9 by the weft yarn 9a between the slats 2a, even when the bottom bar 11 is pulled up to the vicinity of the head box 1, The warp of the second ladder cord 9 does not hang down.

With the horizontal blind constructed as described above, the following operational effects can be obtained.
(1) When the slats 2a and 2b are pulled up to the vicinity of the head box 1, it is possible to prevent the warp of the second ladder cord 9 supporting the slats 2b from hanging down.
(2) The third ladder cord 10 that supports the slat 2b is suspended and supported by the second ladder cord 9 having a long weft thread 9a. Since the length equal to or more than the length L connecting the wefts of the diagonal line is secured, the second ladder cord 9 does not hinder the rotation of the slat 2a.
(3) The second ladder cord 9 can be an existing ladder cord that supports slats wider than the slats 2a and 2b. And since it is not necessary to cut out the weft 9a, an assembly man-hour can be reduced and manufacturing cost can be reduced.
(4) The weft thread 9a of the second ladder cord 9 is not greatly exposed to the indoor side in either the state where the slats 2a, 2b are pulled up or lowered. Therefore, it is possible to prevent a decrease in aesthetics due to the means for preventing the warp yarns of the second ladder cord 9 from hanging down.

You may implement the said embodiment in the following aspects.
-If the second ladder cord 9 has one weft 9a for each of the plurality of slats 2a, it is possible to prevent the warp from hanging down. Therefore, the weft 9a may be appropriately cut off.
The slat angle adjusting device as described above can be similarly applied to a manual horizontal blind.
If the first ladder cord 7 is provided with a weft thread that sandwiches the upper slats 2a up and down, even if the weft thread 9a of the second ladder cord 9 interferes with the rotation of the slat 2a, the slat 2a It can be reliably rotated.
In order to make the rotational speeds of the slats 2a and 2b different, pulleys having different diameters are attached to the same drive shaft, and the first and second ladder cords 7 and 9 are suspended and supported from the pulleys. It is good also as a structure. Further, each pulley may be rotated from the same drive shaft through a gear mechanism having a different gear ratio.
The motors 4a and 4b may be operated independently to rotate the slats 2a and 2b independently.

It is a front view which shows the horizontal blind of one Embodiment. It is a side view showing the horizontal blind of one embodiment. It is a perspective view which shows a 2nd ladder code. It is a side view which shows the 1st and 2nd ladder cord. It is explanatory drawing which shows the length of the weft of a 2nd ladder cord. It is a top view which shows the slat of an upper stage part. (A)-(f) is a side view which shows rotation operation | movement of a slat. (A)-(f) is a side view which shows rotation operation | movement of a slat.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Head box, 2a, 2b ... Slat, 7 ... First ladder cord, 9 ... Second ladder cord, 9a ... Weft, 10 ... Third ladder cord

Claims (7)

Suspend and support multiple slats from the head box via ladder cords, and suspend and support the upper slats and lower slats with separate ladder cords, and connect the upper and lower slats. In horizontal blinds that can be adjusted to different angles,
The upper slat is supported by a first ladder cord, the lower slat is supported by a third ladder cord, and the third ladder cord is provided with a weft longer than the weft of the third ladder cord. A horizontal blind slat angle adjusting device characterized in that it is supported by being suspended from a head box by a second ladder cord.   2. The slat angle adjusting device for a horizontal blind according to claim 1, wherein the weft of the second ladder cord has a length equal to or longer than a length connecting the weft of the first ladder cord with a diagonal line.   3. The slat angle adjusting device for a horizontal blind according to claim 1, wherein the weft yarn of the second ladder cord is positioned in the middle of each slat of the upper stage portion.   The horizontal blind slat angle adjusting device according to any one of claims 1 to 3, wherein a weft thread of the second ladder cord is provided for each of a plurality of stages of slats of the upper stage part.   5. The horizontal blind slat angle adjustment device according to claim 1, wherein the upper slat and the lower slat are rotated in the same direction at different rotation speeds. 6.   6. The horizontal blind slat angle adjusting device according to claim 5, wherein a rotation speed of the upper slat is lower than a rotation speed of the lower slat.   The horizontal blind slat angle according to any one of claims 1 to 6, wherein the first ladder cord is provided with a weft thread that supports the upper slats in a vertical direction. Adjusting device.

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