JP2000282766A - Slat angle adjustment device of horizontal blind - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely rotate the whole slat up to the vertical direction in fully closing the slat by sliding any one end of the before and behind directions of many stages of the slats supported on a ladder cord hung from a ladder cord support device by a shielding cord, and raising and lowering the shielding cord. SOLUTION: A ladder cord 8 is hung and support from a ladder cord support device 3 disposed on a plurality of parts in a head box, and a slat 9 is supported on each lateral string of the ladder cord 8. When an operation rod is operated to rotate an angular adjustment shaft 2 so as to rotate a support drum 6, the ladder cord 8 rotates. When the edge part 6a of a cam shaft is rotated to the side of a shielding cord 10, the shielding cord 10 is pulled on the edge part 6a of the cam shaft, the basic end of each loop 11 is pulled, and each slat 9 is more largely rotated than a state where it is supported on the lateral string of the ladder cord 8. When support drums 5, 6 are further rotated, the slat 9 is rotated up to a substantially vertical state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an angle adjusting device for adjusting the angle of a slat of a horizontal blind.

[0002]

2. Description of the Related Art In a horizontal blind, a ladder cord suspended from a head box supports a plurality of slats, and a bottom rail is suspended from the lower end of the ladder cord.

[0003] The upper end of the ladder cord is supported by a slat angle adjusting shaft in the head box, and the slat angle adjusting shaft is driven to rotate by operating, for example, an operating rod suspended from one side of the head box.

When the operating rod is operated to rotate the slat angle adjusting shaft, the angle of each slat is adjusted in phase with the ladder cord.

[0005]

In such a horizontal blind as described above, in order to tilt the slat vertically and bring it to the fully closed state, the slat angle adjusting shaft is rotated so that one warp of the ladder cord is raised upward. Pull up.

Then, in the upper part of the ladder cord, one of the warps is pulled upward, the other is loosened, and the slat is rotated substantially vertically. However, in the lower part of the ladder cord, the tensile force acting on one of the warp yarns is weakened and cannot be pulled upward sufficiently, and the weight of each slat acts on the other warp yarn, so that the slats are strained. Does not rotate vertically.

Therefore, even if the slat is rotated to the fully closed state, the lower slat cannot be surely rotated to the vertical direction, so that unnecessary external light leaks into the room or privacy is ensured. There is a problem that can not be.

[0008] The object of the present invention is that when the slat is fully closed,
It is an object of the present invention to provide a horizontal blind slat angle adjusting device that can surely rotate all slats to a vertical direction.

[0009]

According to the present invention, a ladder cord is suspended from a ladder cord support device provided in a head box, and a plurality of slats are supported on the ladder cord. Any of the ends in the front-rear direction can be pulled up by a shielding cord, and the shielding cord can be moved up and down by an operation device.

According to a second aspect of the present invention, the ladder cord supporting device supports the ladder cord with a first supporting drum to enable the slat to rotate, and the shielding cord allows any one of the slats in the front-rear direction. The end was liftable, and the shielding cord was supported by a second support drum so as to be able to move up and down.

According to a third aspect of the present invention, the operating device includes a slat angle holding device for preventing the shield cord from lowering based on the weight of the slat. The slat angle adjusting device for a horizontal blind according to any one of claims 1 to 3, wherein the shielding cord supports all slats other than the uppermost slat.

According to a fifth aspect of the present invention, the first and second support drums can be integrally rotated by the operation of the operating device, and the second support drum is formed in a camshaft shape. The amount of pull-up of the shield cord by the second support drum was larger than the amount of pull-up of the ladder code by the support drum.

According to a sixth aspect of the present invention, the first and second support drums can be driven to rotate by first and second angle adjustment shafts, respectively, and the first and second angle adjustment shafts and the operating device are connected to each other. In the meantime, after rotating the slats to a predetermined angle by rotating both the first and second angle adjusting shafts, only the second angle adjusting shaft that rotationally drives the second support drum is rotationally driven. Then, a clutch device capable of rotating the slat was provided, and the clutch device was provided with the slat angle holding device.

According to a seventh aspect of the present invention, a loop is provided at equal intervals in the shielding cord, and the slat is inserted through the loop. According to claim 8, the shielding cord is provided with a hook member at equal intervals, and the slat is supported by inserting the hook member into a hook hole provided at any end of the slat in the front-back direction. .

According to a ninth aspect of the present invention, the shielding cord is provided with a locking portion at an equal interval, the shielding cord is inserted into an insertion hole provided at one end of the slat in the front-rear direction, and the insertion hole is inserted into the insertion hole. The slat was supported by engaging the locking portion.

In the tenth aspect, the shielding cords are respectively disposed on both front and rear sides of the slat, and the slats are inserted into loops of the shielding cords, respectively, so that ends of the slats in the front and rear direction can be pulled up. And

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) As shown in FIGS. 1 and 2, a hexagonal rod-shaped angle adjusting shaft 2 is rotatably supported in a head box 1, as shown in FIG. To
An operating device 3 described below, which is disposed on one side of the head box 1
1 enables rotation driving.

At several places in the head box 1,
A ladder cord support device 3 is provided. In the ladder cord support device 3, a support member 4 is fixed to the head box 1, and a first support drum 5 is attached to the support member 4.
And the second support drum 6 is rotatably supported.

A hexagonal hole 7 is formed in the center of the first and second support drums 5 and 6, and the angle adjusting shaft 2 is inserted into the hexagonal hole 7. Therefore, when the angle adjusting shaft 2 is rotated, the first and second support drums 5, 6 are integrally rotated.

The first support drum 5 is formed in a circular axis shape, and the upper end of the ladder cord 8 is attached to the first support drum 5. A slat 9 is supported on each weft of the ladder cord 8.

The second support drum 6 is formed in a camshaft shape, and the upper end of the shielding cord 10 is attached to the base end of the camshaft. As shown in FIGS. 3 and 4, the shielding cord 10 has loops 11 formed at equal intervals in one cord, and the slats 9 are inserted through the loop 11. Then, as shown in FIGS. 1 and 2, in a state in which the distal end portion 6 a of the camshaft protrudes downward,
Each slat 9 is supported on a weft thread of the ladder cord 8.

As shown in FIG. 6, an operating device 31 for rotating and driving the angle adjusting shaft 2 includes a worm wheel 33 in cases 32a and 32b fixed in the head box 1 and meshes with the worm wheel 33. A matching worm gear 34 is rotatably supported.

A drive gear 35 meshing with the worm wheel 33 is rotatably supported in the cases 32a and 32b. A hexagonal hole 36 is formed in the center of the drive gear 35. Then, the angle adjusting shaft 2 is inserted into the hexagonal hole 36.

As shown in FIG. 5, the worm gear 34
Is projected out of the head box 1, and an operating rod 37 is suspended from the tip of the head box. Therefore, the operating rod 3
When the rotary gear 7 is operated, the drive gear 35 is rotated via the worm gear 34 and the worm wheel 33, and the angle adjustment shaft 2 is rotated based on the rotation of the drive gear 35.

Next, the operation of the horizontal blind slat angle adjusting device constructed as described above will be described. When the angle adjusting shaft 2 is rotated by operating the operation rod 37 and the first and second support drums 6 are rotated, one warp of the ladder cord 8 is pulled up, and each slat 9 is rotated. . When the distal end 6a of the camshaft is rotated toward the shielding cord 10, the shielding cord 10 is pulled up at the distal end 6a of the camshaft, and the base end of each loop 11 is pulled up as shown in FIG. .

Then, since the amount of pulling of the shielding cord 10 is larger than the amount of pulling of the warp of the ladder cord, each slat 9
Is rotated more than the state supported on the weft of the ladder cord 8.

As shown in FIG. 8, when the first and second support drums 5 and 6 are further rotated, each loop 1
The base end of the slat 9 is suspended from the shield cord 10 and the slats 9 supported by the loops 11 are turned to a substantially vertical state.

When the first and second support drums 5 and 6 are rotated in directions opposite to the directions shown in FIGS. 7 and 8, each slat 9 is rotated only by the ladder cord 8.
The horizontal blind slat angle adjusting device as described above has the following effects.

(1) By rotating the angle adjusting shaft 2 to rotate the first and second support drums 5 and 6,
The slat 9 can be turned. (2) When the tip 6a of the cam shaft of the second support drum 6 is rotated toward the shielding cord 10, the tip 6a
Then, the shield cord 10 is pulled up so that each loop 11 can be suspended from the shield cord 10. Therefore, regardless of the state of the ladder cord 8, all the slats 9 from the upper stage to the lower stage can be reliably rotated to a substantially vertical state.

(3) In the state shown in FIG. 8, if the slats 9 are installed such that the convex surface faces the outside of the room, it is possible to reliably block external light and to ensure privacy.

(4) When the second support drum 6 is rotated in a direction opposite to the direction shown in FIGS. 7 and 8, the angle of each slat 9 can be adjusted based on the operation of the ladder cord 8. (5) Since the operation device 31 is configured to transmit the rotation of the operation rod 37 to the angle adjustment shaft 2 via the worm mechanism, the operation device 31 uses the rotational force acting on the angle adjustment shaft 2 from the shield cord 10 and the ladder cord 8. The rotation of the angle adjustment shaft 2 is prevented. Therefore, since the worm mechanism operates as a slat holding device and can prevent rotation of the angle adjusting shaft 2 based on the weight of the slat 9, each slat 9 can be stably held in the fully closed state. (Second Embodiment) FIGS. 9 to 14 show a second embodiment. The same components as those in the first embodiment will be described with the same reference numerals.

As shown in FIG. 9, the first supporting drum 12 for supporting the ladder cord 8 and the second supporting drum 13 for supporting the shielding cord 10 are provided separately, and are vertically offset. In this state, each is rotatably supported by the support member 14.

A first angle adjusting shaft 15 is fitted to the first support drum 12, and a second angle adjusting shaft 16 is fitted to the second support drum 13. ,
When 16 is rotated, each support drum 12, 13 is rotated.

FIG. 10 shows a clutch device interposed between the angle adjusting shafts 15, 16 and the operating device. The second angle adjusting shaft 16 is fitted into a driving gear 18 rotatably supported by a case 17 and an end of the driving gear 18 is connected to an operating device. Then, when the second angle adjusting shaft 16 is rotated by the operation of the operating device, the drive gear 18 is rotated.

The drive gear 18 is meshed with an intermediate gear 19 rotatably supported by the case 17, and the intermediate gear 19 is meshed with a transmission gear 20 also rotatably supported by the case 17.

The number of teeth of the transmission gear 20 is equal to the number of teeth of the drive gear 18. Therefore, when the drive gear 18 is rotated, the transmission gear 20 is rotated by the same angle in the same direction as the drive gear 18.

A clutch spring 21 is wound around the tip of a gear shaft 20a of the transmission gear 20, and
A base end of the clutch member 22 is supported at a front end of the base member 0a so as to be relatively rotatable. The clutch spring 21
As shown in FIG. 11, both end portions 21a and 21b are bent so as to protrude in a radial direction of the gear shaft 20a at a predetermined interval.

Both ends 21 of the clutch spring 21
a, 21b between the clutch member 22 and the engaging portion 2
2a is projected. Then, the gear shaft 20a is rotated, and one of the two ends 21a and 21b is
When it comes into contact with 2a, one of its ends 21a, 21b is pushed in the radial direction of the clutch spring 21, so that the frictional force between the clutch spring 21 and the gear shaft 20a increases.

Accordingly, when the gear shaft 20a is rotated, the clutch member 22 is rotated in the same direction via the clutch spring 21. The case 17 is formed with a rotation preventing portion 23 that protrudes on the rotation trajectory of both ends 21 a and 21 b of the clutch spring 21. When the gear shaft 20a is rotated and one of the two ends 21a, 21b of the clutch spring 21 comes into contact with the rotation preventing portion 23, one of the two ends 21a, 21b is pushed in the radial direction of the clutch spring 21. Therefore, the frictional force between the clutch spring 21 and the gear shaft 20a decreases.

Therefore, when one of the two ends 21 a and 21 b comes into contact with the rotation preventing portion 23, the gear shaft 20 a idles with respect to the clutch spring 21. As a result, the clutch member 22 is moved from a state in which one end of the clutch spring 21 is in contact with one side of the rotation preventing section 23 to a state in which the other end is in contact with the other side of the rotation preventing section 23. And almost 18
It rotates integrally with the gear shaft 20 only at 0 degrees.

On the tip side of the clutch member 22,
A substantially cylindrical coil frame 24 is fitted and fixed to the case 17, and a stop ring 2 is attached to the inner peripheral surface of the coil frame 24.
5 is fitted.

As shown in FIG. 12, both ends 25a and 25b of the stop ring 25 are projected radially inward at predetermined intervals, and the stop ring 25 is engaged with the clutch member 22 between both ends 25a and 25b. The part 22b is projected.

Then, when the clutch member 22 is rotated,
The engagement portion 22b is formed at both ends 25a, 2 of the stop ring 25.
5b, both ends 25a, 25
Since any one of b is pushed in the diameter reducing direction of the stop ring 25, the frictional force between the stop ring 25 and the coil frame 24 is reduced.

Therefore, the engaging portion 22b is connected to the stop ring 2
5, the clutch member 22 and the stop ring 25 rotate integrally with each other, and the stop ring 25 rotates integrally with the clutch member 22 as the clutch member 22 rotates. I do.

A tilt output shaft 2 is provided in the coil frame 24.
A base end of the tilt output shaft 6 projects, and a tip end of the tilt output shaft 26 is rotatably supported by the case 17. At the base end of the tilt output shaft 26, both ends 25 a of the stop ring 25 are engaged with the engagement portion 22 b of the clutch member 22.
An engaging portion 26a is formed so as to sandwich 25b. Therefore, when the clutch member 22 is rotated,
The tilt output shaft 26 is integrally rotated via the stop ring 25.

Further, based on the rotation of the tilt output shaft 26, the engaging portion 26 a is connected to both ends 25 a, 2 of the stop ring 25.
When the stop ring 25 abuts on one of the ends 25a, 25b, the frictional force between the stop ring 25 and the coil frame 24 increases.

Therefore, the engaging portion 26a is connected to the stop ring 2
5, the rotation of the tilt output shaft 26 is prevented. One end of the first angle adjusting shaft 15 is fitted to the tip of the tilt output shaft 26.

In the horizontal blind configured as described above, when the second angle adjusting shaft 16 is rotated in the pulling direction of the shield cord 10 by the operating device, the second support drum 1 is rotated.
3 is rotated, and the shield cord 10 is pulled up.

At this time, the driving gear 18 and the intermediate gear 19
, The transmission gear 20 is rotated, and the gear shaft 20a is rotated. Then, the clutch member 22 is rotated integrally with the gear shaft 20a, the tilt output shaft 26 is rotated integrally with the clutch member 22, and the first angle adjusting shaft 15 is rotated.

Then, the first and second angle adjusting shafts 15,
16 is rotated by the same angle, the first and second support drums 12 and 13 are rotated by the same angle, and the ladder code 8 is pulled up together with the shielding code 10 in the same manner.

Accordingly, in this state, as shown in FIG. 13, the slat 9 is rotated by the ladder cord 8 and the shielding cord 10. When the gear shaft 20a rotates by a predetermined angle from this state, the gear shaft 20a idles with respect to the clutch member 22, and the rotation of the first angle adjusting shaft 15 stops.
Then, only the second angle adjusting shaft 16 is rotated, and the shield cord 10 is further pulled up by the second support drum 13.

As a result, as shown in FIG. 14, the slat 10 is further rotated and is rotated substantially vertically. Further, even if the first angle adjusting shaft 15 is rotated based on the weight of the slat 9 acting on the ladder cord 8, the rotation of the first angle adjusting shaft 15 is prevented by the operation of the clutch device.

With the horizontal blind thus formed, the same operation and effects as those of the above embodiment can be obtained. (Third Embodiment) FIGS. 15 to 22 show a third embodiment. In this embodiment, the shield cord is pulled out from one side of the head box without being wound up by the support drum, thereby rotating the slat. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description is omitted.

As shown in FIGS. 15 and 16, in the head box 1, the supporting member 4 is provided with a guide shaft 38 for guiding the shield cord 10 to one side of the head box 1. Is guided to a later-described operating device 39 on one side of the head box 1 via a guide shaft 38.

As shown in FIG. 17, the input shaft 40 of the operating device 39 projects obliquely downward from the head box 1, and at the lower end thereof, an operating rod 42 is suspended and supported via a universal joint 41.

A shield cord 10 pulled out of the head box 1 is inserted through the input shaft 40 and the operating rod 42, and a code equalizer 43 is attached to a lower end of the shield cord 10.

As shown in FIG. 18, the operating device 39 is a slat angle holding device 4 for preventing the shielding cord 10 from being drawn into the head box 1 due to the weight of the slat 9.
4 and a gear mechanism 45 for rotating the angle adjustment shaft 2 based on a rotation operation of the operation rod 42.

The support case 46 of the gear mechanism 45 is fixed inside the head box 1 and its support case 46
The input shaft 40 is supported rotatably and vertically movable in the axial direction.

An enlarged diameter portion 47 is formed at the upper end of the input shaft 40, and a spur gear 48 is engraved on the outer periphery of the enlarged diameter portion 47. A coil spring 49 is provided between the bearing portion of the support case 46 that rotatably supports the input shaft 40 and the enlarged diameter portion 47. When the input shaft 40 is pulled down, the coil spring 49
Is compressed, and the input shaft 40 is urged upward by the urging force of the coil spring 49 with the support case 46 as a fulcrum.

On the side of the enlarged diameter portion 47, a first intermediate gear 50 constituted by a spur gear is
Are rotatably supported, and the first intermediate gear 50 is meshed with the spur gear 48 of the enlarged diameter portion 47.

On the side of the first intermediate gear 50,
A second intermediate gear 51 is rotatably supported by the support case 46. The second intermediate gear 51 is supported in a state where its axis is inclined 45 degrees with respect to the axis of the first intermediate gear 50, and the first intermediate gear 50
A bevel gear 52 meshing with is formed.

A worm 53 is engraved on the upper portion of the second intermediate gear 51, and a worm wheel 54 rotatably supported by the support case 46 is meshed with the worm 53.

The central portion of the worm wheel 54 is formed in a hollow shape, and the angle adjusting shaft 2 is inserted therethrough.
On one end face of the worm wheel 54, a gentle mountain-shaped unevenness 55a is formed continuously in the circumferential direction, and a clutch member 56 facing one end face of the worm wheel 54 is formed.
A similar unevenness 55b is also formed on the end surfaces of the first and second surfaces, and they are engaged with each other.

The clutch member 56 is constantly pressed against the worm wheel 54 by the urging force of the coil spring 57 with the support case 46 as a fulcrum, and a rotational torque less than a predetermined value is transmitted from the worm wheel 54 to the clutch member 56. You. When the rotational torque transmitted from the worm wheel 54 to the clutch member 56 exceeds a certain value, the unevenness 55a, 55b idles while the clutch member 56 reciprocates in the axial direction.

A hexagonal hole 58 is formed at the center of the clutch member 56, and the angle adjusting shaft 2 is inserted into the hexagonal hole 58. Therefore, when the clutch member 56 is rotated, the angle adjusting shaft 2 is rotated integrally with the clutch member 56.

Above the input shaft 40, a pulley 59 is rotatably supported by the support case 46 via a support shaft 60. The support shaft 60 is supported in a direction orthogonal to the longitudinal direction of the head box 1, and the pulley 59 is supported rotatably along the longitudinal direction of the head box 1. Knurls are engraved on the outer peripheral surface of the pulley 59.

On the side of the pulley 59, a stopper cam 61 is supported by the support case 46 via a support shaft 62 so as to be rotatable in the vertical direction. That is, the stopper cam 61 has its base end rotatably supported by a support shaft 62 supported in a direction perpendicular to the longitudinal direction of the head box 1, and its distal end faces the outer peripheral surface of the pulley 59. ing. A knurled tooth surface 63a is formed below the opposing surface, and a flat surface 63a is formed above the opposing surface.
b is formed.

When the stopper cam 61 is rotated upward from the state where the tip of the stopper cam 61 is located below the pulley 59, the minimum distance between the pulley 59 and the tooth surface 63a of the stopper cam 61 is as follows. The shielding code 1
It is formed to be sufficiently smaller than the diameter of 0.

A support shaft 62 for supporting the stopper cam 61
Is wound with a torsion coil spring 64, and one end of the torsion coil spring 64 is connected to the support case 46.
, And the other end is in contact with the stopper cam 61. The stopper cam 61 is constantly urged upward by the urging force of the torsion coil spring 64 with the support case 46 as a fulcrum.

As shown in FIG. 19, the stopper cam 6
On one side, a drive arm 65 is formed. The drive arm 65 has a base end located below the support shaft 62, a distal end portion extending obliquely upward, and a distal end formed with a locking shaft 66 protruding in the axial direction of the support shaft 62. ing.

A locking recess 67 is formed on the upper surface of the stopper cam 61, and a rotation restricting shaft 68 that engages with the locking recess 67 is formed on the upper part of the support case 46. The stopper concave portion 67 of the stopper cam 61 has a rotation restricting shaft 68.
, Further rotation is prevented.

A release plate 69 is provided behind the support case 46. As shown in FIG. 19, the release plate 69 is formed with an engagement portion 70 capable of engaging with the locking shaft 35 of the stopper cam 61, and the base end of the release plate 69 is bent at a right angle. An annular portion 71 through which the input shaft 40 can be inserted is formed.

As shown in FIG. 18, the input shaft 40 is inserted through the annular portion 71 of the release plate 69,
1 is supported between the coil spring 57 and the enlarged diameter portion 47. Therefore, the release plate 69 moves up and down integrally with the input shaft 40.

When the input shaft 40 is at the upper limit position by the urging force of the coil spring 49, the engaging recess 70 of the engaging portion 70 of the release plate 69 is engaged with the rotation restricting shaft 68. The stopper cam 61 is set so as to be located above the locking shaft 66.

When the release plate 69 moves downward by pulling down the input shaft 40 against the urging force of the coil spring 49, the engaging portion 70 of the release plate 69 engages with the locking shaft 66 of the stopper cam 61. At the same time, the stopper cam 61 is rotated downward.

When the input shaft 40 moves upward and returns to the original position by the biasing force of the coil spring 49, the locking recess 67 is engaged with the rotation regulating shaft 68 by the biasing force of the torsion coil spring 64. The stopper cam 61 is pivoted upward until they match.

Therefore, the pulley 59 and the stopper cam 61
The shield cord 10 is inserted between the pulley 59 and the stopper cam 61 from inside the headbox 1 and guided into the operation rod 42 via the input shaft 40.

In the horizontal blind constructed as described above, when the operating rod 42 is rotated, the input shaft 40, the first intermediate gear 50, the second intermediate gear 51, the worm wheel 54, and the clutch member 56 are used. The angle adjustment shaft 2 is rotated. Then, based on the rotation of the angle adjusting shaft 2, FIG.
As shown in FIG. 1, one warp of the ladder cord 8 is pulled up via the first support drum 5, and the slat 9 is rotated.

After the slat 9 is sufficiently rotated by the ladder cord 8, the shield cord 10 is pulled out from the operating rod 42. As shown in FIG. 22, each slat 9 is suspended from the shield cord 10 by a loop 11. And it is surely turned almost vertically.

When the shielding cord 10 is released from this state,
Since the shield cord 10 is sandwiched between the stopper cam 61 and the pulley 59, the slat 9 is held in the state shown in FIG.

Further, when the operation rod 42 is pulled downward, FIG.
As shown in FIG. 7, the stopper cam 61 is rotated downward, so that the shield cord 10 can be freely moved, and the shield cord 1 suspended in the operation rod 42 due to the weight of the slat 9.
0 is pulled into the head box 1 and each slat 9 returns to the state supported by the weft of the ladder cord 8.

With the horizontal blind as described above, the following functions and effects can be obtained in addition to the functions and effects (3) and (4) obtained in the first embodiment. (1) The slat 9 can be rotated via the ladder cord 8 by rotating and driving the angle adjusting shaft 2 to rotate the first support drum 5. (2) By pulling out the shield cord 10 inserted into the operation rod 42 downward, regardless of the state of the ladder cord 8, all the slats 9 from the upper stage to the lower stage can be surely rotated to a substantially vertical state. it can. (3) The slat 9 can be obtained by directly pulling the shielding cord 10.
Can be rotated, so that the slat 9 can be more reliably rotated to the vertical direction as compared with the first and second embodiments. (Fourth Embodiment) FIG. 23 shows a fourth embodiment. In this embodiment, of the slats 9 supported by the ladder cord 8, only the uppermost slat 9 is not supported by the loop 11 of the shielding cord 10.
Other configurations are the same as those of the third embodiment.

With this configuration, the uppermost slat 9 is rotated only by the ladder code 8, and the other slats 9 are rotated by the ladder code 8 and the shielding cord 10.

Then, without increasing the distance between the uppermost slat 9 and the head box 1, the shielding cord 10
Can be sufficiently secured. As a result, when the shield cord 10 is pulled up and each slat 9 is suspended from the shield cord 10, each slat 9 can be reliably rotated to the vertical direction.

The above embodiment can be modified as follows. -A pair of shielding cords 10 are provided on both front and rear sides of each slat 9, and even if the second support drums 6 and 13 are rotated in any direction, each slat 9 is vertically rotated by any shielding cord. You may make it do. In the shielding cord 10, as shown in FIG.
May be provided, and a hooking member 73 attached to the shielding cord 10 may be inserted into the hooking hole 72 to pull up an end of each slat 9. The shield cord 10 is provided with a spherical locking portion 74 instead of the loop 11 as shown in FIG. 25, and an insertion hole 75 having a smaller diameter than the locking portion 74 is formed at the end of each slat 9 in the front-rear direction. The shield cord 10 may be inserted through the insertion hole 75 so that the end of the slat is pulled up by the locking portion 74. As shown in FIG. 26, a hook 76 for hooking the loop 11 of the shielding cord 10 to the front-back end of the slat 9
, And the loop 11 is hooked from below the slat 9
Hang on. With such a configuration, when the shielding cord 10 is pulled up, the slat 9 can be more reliably rotated to the vertical direction. The upper end of the ladder cord 8 is fixed to the head box 1, and the ladder cord 8 has only a function of supporting each slat 9 in the horizontal direction, and the rotation of each slat 9 is exclusively performed by the shielding cord 10. You may do so. In the first embodiment, the rotation of the operating rod 36 is transmitted to the angle adjusting shaft 2 via a spur gear, and the rotation of the angle adjusting shaft 2 due to the weight of the slat 9 is as shown in the second embodiment. The stopping may be performed by using the frictional force of the stop ring 25. The angle adjusting shaft 2 may be driven to rotate by the driving force of the motor, and the rotation of the angle adjusting shaft 2 due to the weight of the slat 9 may be prevented by the regenerative braking action of the motor. The upper end of the ladder cord 8 may be attached to a rack, and the rack may be moved by rotating a gear meshing with the rack to move the ladder cord up or down. In the first embodiment, the ladder cord 8 and the shielding cord 10 are supported by a support drum having the same diameter, and when the support drum is rotated so as to rotate the slat 9 in the vertical direction, the warp of the ladder code 8 is used. The pulling up of the ladder cord 8 is performed by pulling up with the concave strip provided on the supporting drum, and
The slats 9 may be rotated in the vertical direction by the shield cords 10 by making them smaller than the amount of pulling.

[0086]

As described above in detail, the present invention can provide a slat angle adjusting device for a horizontal blind which can surely rotate all the slats to the vertical direction when the slats are fully closed.

[Brief description of the drawings]

FIG. 1 is a side view showing a slat angle adjusting device according to a first embodiment.

FIG. 2 is a front view showing a slat angle adjusting device.

FIG. 3 is a side view showing a slat supported by a ladder cord and a shielding cord.

FIG. 4 is a perspective view showing a slat supported by a ladder cord and a shielding cord.

FIG. 5 is a side view showing the operation device.

FIG. 6 is an exploded perspective view showing the operation device.

FIG. 7 is a side view showing the operation of the slat angle adjusting device.

FIG. 8 is a side view showing the operation of the slat angle adjusting device.

FIG. 9 is a side view showing a slat angle adjusting device according to a second embodiment.

FIG. 10 is a cross-sectional view illustrating a clutch device according to a second embodiment.

FIG. 11 is a sectional view showing a clutch device.

FIG. 12 is a sectional view showing a clutch device.

FIG. 13 is a side view showing the operation of the slat angle adjusting device according to the second embodiment.

FIG. 14 is a side view showing the operation of the slat angle adjusting device according to the second embodiment.

FIG. 15 is a side view showing a slat angle adjusting device according to a third embodiment.

FIG. 16 is a front view showing a slat angle adjusting device according to a third embodiment.

FIG. 17 is a side view showing the operation device according to the third embodiment.

FIG. 18 is a cross-sectional view illustrating an operation device according to a third embodiment.

FIG. 19 is an exploded perspective view showing the slat angle holding device.

FIG. 20 is a sectional view showing the operation of the operating device.

FIG. 21 is a side view showing the operation of the slat angle adjusting device according to the third embodiment.

FIG. 22 is a side view showing the operation of the slat angle adjusting device according to the third embodiment.

FIG. 23 is a side view showing a slat angle adjusting device according to a fourth embodiment.

FIG. 24 is a perspective view showing another example of the shielding cord and the slat.

FIG. 25 is an exploded perspective view showing another example of the shielding cord and the slat.

FIG. 26 is a perspective view showing another example of the shielding cord and the slat.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Head box 3 Ladder code support device 6 Operating device (second support drum) 8 Ladder code 9 Slat 10 Shielding code

Claims (10)

[Claims] A ladder cord is suspended from a ladder cord support device provided in a head box, and a plurality of slats are supported on the ladder cord. One end of each of the slats in the front-rear direction is provided. Characterized by being capable of being lifted up by a shielding cord, and capable of raising and lowering the shielding cord by an operation device. 2. The ladder cord supporting device according to claim 1, wherein the ladder cord is supported by a first support drum, and the slats are rotatable. 2. The slat angle adjusting device for a horizontal blind according to claim 1, wherein the slat angle adjusting device can be raised and the shield cord is supported by a second support drum so as to be able to move up and down. 3. The horizontal blind according to claim 1, wherein the operating device includes a slat angle holding device that prevents the shield cord from lowering based on the weight of the slat. Slat angle adjustment device. 4. The slat angle adjusting device for a horizontal blind according to claim 1, wherein the shielding cord supports all slats other than the uppermost slat. 5. The first and second support drums are integrally rotatable by operation of the operating device, and the second support drum is formed in a camshaft, and is formed by the first support drum. The slat angle adjusting device for a horizontal blind according to any one of claims 2 to 4, wherein an amount of pulling up of the shielding cord by the second support drum is larger than an amount of pulling up of the ladder cord. 6. The first and second support drums can be driven to rotate by first and second angle adjustment shafts, respectively, and a first and second angle adjustment shafts and an operation device are provided between the first and second support drums. Rotating the slats to a predetermined angle by rotating the first and second angle adjusting shafts together, and then rotating and driving only the second angle adjusting shaft that rotationally drives the second support drum. The slat angle adjusting device for a horizontal blind according to any one of claims 2 to 4, wherein a clutch device is provided which can rotate the slat angle, and the slat angle holding device is provided in the clutch device. 7. The slat angle adjusting device for a horizontal blind according to claim 1, wherein loops are provided at equal intervals in the shielding cord, and the slats are inserted through the loop. 8. A shield member is provided on the shielding cord at equal intervals, and the slat is supported by inserting the latch member through a latch hole provided at one end of the slat in the front-rear direction. The slat angle adjusting device for a horizontal blind according to any one of claims 1 to 6, wherein: 9. The shielding cord is provided with locking portions at equal intervals, the shielding cord is inserted through an insertion hole provided at one end in the front-rear direction of the slat, and the locking is inserted into the insertion hole. The slat angle adjusting device for a horizontal blind according to any one of claims 1 to 6, wherein the slats are supported by engaging portions. 10. The shielding cord is disposed on each of the front and rear sides of the slat, and the slat is inserted through a loop of each shielding cord, so that the front and rear ends of each slat can be pulled up. The slat angle adjusting device for a horizontal blind according to any one of claims 7 to 9, wherein: