JP2000073676A - Slat-angle regulator for horizontal type blind and slat- angle regulator for electric blind - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a slat-angle regulator for a horizontal type blind, by which the angels of slats having different width can be adjusted from a totally-closed state to a totally-opened state without changing the angle of rotation of a slat-angle regulating shaft. SOLUTION: In the slat-angle regulator for the electric blind, in which a slat-angle regulating shaft 17 is supported rotatably into a head box 11 while being rotated and driven by a driving means, ladder cords 12a are hung down and supported from a tilter 23 operated on the basis of the revolution of the slat-angle regulating shaft 17 and a large number of stages of slats 13a are borne to the ladder cords 12a, a plurality of retaining pairs 27a, 27b for supporting the ladder cords 12a having different width are installed to the tilter 23, and each ladder cord 12a can be suspended and borne in the vertical direction from the retaining pairs 27a, 27b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a horizontal blind slat drive.

[0002]

2. Description of the Related Art Conventionally, as one type of a horizontal electric blind, a head box is provided with a slat elevating motor, a slat angle adjusting motor, and a control unit for controlling the operation of both motors. In some cases, the slat is raised and lowered and the angle is adjusted by operating the slat.

When the slat lifting / lowering motor is operated in the slat lifting direction, the slat lifting / lowering shaft is rotated in the slat lifting direction, and the lifting / lowering tape is wound. Then, the bottom rail is pulled up, and is sequentially pulled up from the lower slat.

When the slat elevating motor is operated in the slat descent direction, the slat elevating shaft is rotated in the slat descent direction, and the elevating tape is rewound. Then, the bottom rail descends and the slat descends.

In the slat angle adjusting operation, when the slat angle adjusting motor is operated, the slat angle adjusting shaft is rotated, and based on the rotation of the slat angle adjusting shaft, the slat is moved through the ladder cord support device and the ladder cord. It is turned. Such an operation is controlled based on a program stored in the control unit in advance.

A conventional ladder cord supporting device will be described with reference to FIG. 8. A pulley 2 is fitted on a slat angle adjusting shaft 1, and a tilt tape 3 is mounted on the pulley 2.

Ladder cords 4 are suspended from both ends of the tilt tape 3, and a plurality of slats 5a are supported on the ladder cords 4. And the slat angle adjustment axis 1
Is rotated, the pulley 2 is rotated, and the pulley 2 is rotated.
The tilt tape 3 moves based on the rotation of, and the slat 5 a is rotated via the ladder cord 4.

The slat angle adjusting motor for rotating and driving the slat angle adjusting shaft 1 has a built-in encoder for detecting the rotation angle, the encoder detects the rotation angle of the slat angle adjusting shaft 1, and the rotation thereof is performed. The rotation angle of the slat is calculated based on the angle and a conversion table preset in the control unit. Then, when the slat angle adjusting shaft 1 is rotated by a predetermined angle, that is, when the slat is rotated in a substantially vertical direction to be fully closed, the operation of the slat angle adjusting motor is stopped.

The ladder cord supporting device as described above is also used for a horizontal blind in which the slat angle adjusting shaft 1 is rotationally driven by manually operating an operating rod or an operating cord suspended from a head box.

[0010]

In the ladder cord supporting device as described above, a slat 5a having a width of 25 mm shown in FIG.
A common pulley 2 is used for hanging and supporting the slats 5b having a width of 35 mm shown in FIG.

When the slat 5a is used, when the slat angle adjusting shaft 1 is rotated by approximately 90 degrees,
The slat 5a is rotated by approximately 180 degrees to rotate from one fully closed state to the other fully closed state. In addition, slat 5
b, the slat angle adjusting shaft 1 is almost 1
When the slat 5b is rotated by 20 degrees, the slat 5b is rotated by approximately 180 degrees, and is rotated from one fully closed state to the other fully closed state.

Therefore, when the slats 5a of 25 mm and the slats 5b of 35 mm are used, it is necessary to change the conversion table for controlling the rotation angle of the slat angle adjusting shaft 1.

As a result, since a plurality of conversion tables corresponding to the width of the slat must be stored in the control unit in advance, there is a problem that the cost is increased. Further, since it is necessary to switch the conversion table according to the width of the slat, there is a problem that the switching operation becomes complicated.

When the ladder cord supporting device is used for a horizontal blind that rotationally drives the slat angle adjusting shaft 1 by manual operation, if the width of the suspended slat is different, the slat is moved from one fully closed state to the other. Since the rotation angle of the slat angle adjustment shaft 1 when rotating to the fully closed state is different, the operation amount of the operating means for rotating and driving the slat angle adjustment shaft 1 changes.

Therefore, in order to adjust the angle of the slat to the fully closed state with the same operation amount regardless of the width of the slat, it is necessary to change the diameter of the pulley 2 according to the width of the slat. As a result, it becomes necessary to prepare various types of pulleys 2, and there is a problem that the number of parts increases and the cost increases.

An object of the present invention is to provide a horizontal blind slat angle adjusting device capable of adjusting the angle of slats of different widths from a fully closed state to a fully opened state without changing the rotation angle of the slat angle adjusting shaft. is there.

[0017]

According to a first aspect of the present invention, a slat angle adjusting shaft is rotatably supported in a head box and is rotatable by driving means, and the tilter operates based on the rotation of the slat angle adjusting shaft. In a horizontal blind slat angle adjusting device that supports a ladder cord suspended from a plurality of slats on the ladder cord, the tilter is provided with a plurality of locking pairs for supporting ladder cords of different widths. Each of the ladder cords can be suspended and supported in the vertical direction from the locking pair.

According to the second aspect of the present invention, in the tilter, the slat angle adjusting shaft is inserted into a shaft formed in a central portion thereof so as to be rotatable integrally with the slat angle adjusting shaft. A plurality of locking grooves capable of supporting the upper end of the ladder cord are provided on support pieces extending on both sides of the portion.

In the third aspect, the locking groove is bent in a crank shape from the opening toward the base end. In claim 4, the plurality of locking grooves are alternately opened on both sides of the support piece.

According to a fifth aspect of the present invention, a concave portion is provided on the upper surface of the support piece around a base end of the locking groove, and a washer which can be accommodated in the concave portion is attached to an upper end of the ladder cord. ,
The ladder cord was inserted into the locking groove, and the washer was housed in the recess.

According to a sixth aspect of the present invention, the slat angle adjusting shaft is rotatably supported in the head box and rotatable by an electric motor, and a ladder cord is suspended from a tilter which operates based on the rotation of the slat angle adjusting shaft. In the slat angle adjusting device for an electric blind supporting and supporting a plurality of slats on the rudder cord, the tilter may rotate slats having different widths by the same angle based on the same rotation angle of the slat angle adjusting shaft. A plurality of locking pairs are provided at the positions to be moved.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an electric blind embodying the present invention will be described below. As shown in FIG. A slat 13 is suspended and supported, and the bottom rail 1
4 is suspended and supported.

The upper end of the ladder cord 12 is suspended and supported by a ladder cord support device in the head box 11. An elevating tape 15 is penetrated near the ladder cord supporting position of the slat 13, and the bottom rail 14 is suspended from the lower end of the elevating tape 15. The upper end of the elevating tape 15 is supported by an elevating tape winding device in the head box 11.

In the head box 11, a support member 16 is disposed above the ladder cord 12 and the elevating tape 15, respectively. A slat angle adjusting shaft 17 and a slat elevating shaft 18 are rotated on the support member 16. Supported as possible.

At one end of the head box 11, a slat angle adjusting motor 19 is provided.
Is connected to the slat angle adjusting shaft 17. Therefore, when the slat angle adjusting motor 19 is operated and the slat angle adjusting shaft 17 is rotated, the ladder cord 12 is moved up and down via the ladder cord supporting device,
The angle of each slat 13 is adjusted in phase.

A slat elevating motor 20 is provided in the head box 11, and an output shaft of the slat elevating motor 20 is connected to the slat elevating shaft 18.
Then, when the lifting / lowering motor 20 is operated and the slat lifting / lowering shaft 18 is rotated in the slat lifting direction, the lifting / lowering tape 15 is wound on the lifting / lowering tape winding device, and the bottom rail 14 is pulled up. It is pulled up sequentially from the lower slat 13.

On the other hand, when the elevating motor 20 is operated and the slat elevating shaft 18 is rotated in the slat descent direction, the elevating tape 15 is rewound from the elevating tape winding device, and the bottom rail 14 and the slat 13 are lowered. I do.

The slat angle adjusting motor 19
Has a built-in encoder for detecting the rotation angle of the output shaft, and the output signal of the encoder is
1 is input to the control unit 21 disposed in the control unit 1.

The control unit 21 stores a conversion table for converting the rotation angle of the output shaft of the slat angle adjusting motor 19 into the rotation angle of the slat 13. When the output shaft of the slat angle adjusting motor 19 is rotated by a predetermined angle and the slat 13 is turned to the fully closed state, the operation of the slat angle adjusting motor 19 is performed based on the operation of the control unit 21. It stops automatically.

A specific configuration of a ladder cord supporting device for supporting the upper end of the ladder cord 12 in the head box 11 will be described with reference to FIGS. As shown in FIG. 2, a bearing portion that opens upward is formed at an upper portion of the support member 16. A shaft 24 is formed in the center of the tilter 23 along the longitudinal direction of the head box 11, and both ends of the shaft 24 are rotatably supported by the bearings.

The shaft 24 of the tilter 23 has a hexagonal hole 2
The slat angle adjusting shaft 17 is fitted into the hexagonal hole 25 and fixed. Therefore, the tilter 23 is rotated based on the rotation of the slat angle adjusting shaft 17.

The tilter 23 has support pieces 2 in the front-rear direction.
6a and 26b are extended symmetrically, and as shown in FIGS. 3 and 4, the support pieces 26a and 26b have locking grooves 27a and 27b for supporting the upper end of the ladder cord 12. As shown in FIG.
Are formed symmetrically.

The locking groove 27a is provided on each of the support pieces 26a, 2a.
6b, it is located near the shaft portion 24, and is opened on one side of each of the support pieces 26a, 26b. The locking groove 27b is located near the tip of each of the support pieces 26a, 26b, and is opened to the other side of each of the support pieces 26a, 26b. Each of the locking grooves 27a, 27b is bent in a crank shape from its opening toward the base end.

On the upper surfaces of the support pieces 26a and 26b,
An oval concave portion 28 is formed in a range including the base ends of the locking grooves 27a and 27b. In addition, each support piece 26a, 2
On the lower surface of 6b, a recess 29 is formed from the base end of each locking groove 27a, 27b toward the distal end of each support piece 26a, 26b.

As shown in FIG. 2, the ladder cord 12 is formed so as not to fall out of the washer 30 by inserting the upper end thereof into the washer 30 and crimping the upper end of the ladder cord downward. ing. Then, the locking groove 2 is positioned so that the washer 30 is located in the recess 28.
7a and 27b.

The distance between the locking grooves 27a is set to about 25 mm. As shown in FIG. 2, when the ladder cord 12a having a width of 25 mm is suspended from the locking grooves 27a, the ladder cord 12a is used to slat the ladder cord 12a with a width of 25 mm. 13a can be supported.

The distance between the locking grooves 27b is about 35 mm.
6, and as shown in FIG.
When the ladder cord 12b having a width of mm is suspended and supported, the slat 13b having a width of 35 mm can be supported by the ladder cord 12b.

The support member 16 has the tilter 23
A restricting piece 31 is formed on the center line of FIG. Then, as shown in FIGS. 5 and 7, when the tilter 23 is rotated substantially vertically, one of the lower surfaces of the support pieces 26a and 26b abuts on the restriction piece 31 and moves in the same direction of the tilter 23. Is prevented from rotating further.

Next, the operation of the ladder cord supporting device configured as described above will be described. As shown in FIG. 2, when the ladder cord 12a is supported from the locking groove 27a, the ladder cord 12a can support the slat 13a having a width of 25 mm. When the slat angle adjusting shaft 17 is rotated from this state, and the tilter 23 is rotated substantially 90 degrees as shown in FIG. 5, the ladder cord 12a is rotated.
, Each slat 13a is rotated to the fully closed state.

As shown in FIG. 6, when the ladder cord 12b is supported from the locking groove 27b, the ladder cord 12b is supported.
Can support the slat 13b having a width of 35 mm. Then, the slat angle adjusting shaft 17 is rotated from this state, and as shown in FIG.
When rotated, the slats 13b are rotated to the fully closed state via the ladder cord 12b.

In the ladder cord supporting device as described above,
The following operational effects can be obtained. (1) From the locking groove 27a of the tilter 23 to the ladder code 1
By suspending and supporting the 2a, the tilters 23 to 25
The ladder cord 12a and the slat 13a having a width of mm can be suspended and supported. (2) From the locking groove 27b of the tilter 23 to the ladder code 1
By suspending and supporting the 2b, the tilters 23 to 35
The ladder cord 12b and the slat 13b having a width of mm can be suspended and supported. (3) A locking groove 27a for suspending and supporting the 25 mm width ladder cord 12a and a locking groove 27b for suspending and supporting the 35 mm width ladder cord 12b are selected, and the ladder cords 12a and 12b are tilted. 23, the ladder cords 12a, 1
The rotation angle of the slat angle adjusting shaft 17 for rotating the slats 13a and 13b supported by 2b to the fully closed state can be the same. (4) Even when the widths of the ladder cord and the slats suspended from the tilter 23 are changed, the rotation angle of the slat angle adjusting shaft 17 for rotating each slat to the fully closed state may be the same. Control unit 2
One type of conversion table can be stored in one. (5) Since one type of conversion table can be stored in the control unit 21, the cost can be reduced, and the operation of switching the conversion table when the width of the ladder code and the slat is changed is omitted. be able to. (6) Since the opening directions of the locking grooves 27a and 27b are reversed, even when the ladder cord suspended and supported from the tilter 23 becomes loose, the ladder cord suspended and supported from the locking groove 27a. 12a is caught in the locking groove 27b,
Alternatively, the ladder cord 12b suspended and supported from the locking groove 27b can be prevented from being caught on the locking groove 27a. (7) Since the locking grooves 27a, 27b are bent in a crank shape, the locking grooves 27a, 2b of the ladder cords 12a, 12b are bent.
7b can be prevented from coming off. (8) When a load is applied to the ladder cords 12a and 12b, the washer 30 is supported in the recess 28,
The ladder cords 12a, 12b can be prevented from coming off from the locking grooves 27a, 27b.

The above embodiment may have the following configuration.・ Each support piece 26a, 26b of the tilter 23 has three
One or more locking grooves may be provided so as to be able to cope with various types of slat widths. -The ladder cord support device may be used for a horizontal blind that manually rotates and drives a slat angle adjusting shaft. In this case, irrespective of the width of the slat, the common use of the tilter 23 can reduce the cost of parts. -A pulse motor without an encoder may be used as the angle adjusting motor.

[0043]

As described in detail above, the present invention provides a slat angle adjustment of a horizontal blind which can adjust the slats of different widths from a fully closed state to a fully opened state without changing the rotation angle of the slat angle adjusting shaft. An apparatus can be provided.

[Brief description of the drawings]

FIG. 1 is a front view showing an electric blind of one embodiment.

FIG. 2 is a cross-sectional view showing a ladder cord support device that supports a ladder cord having a width of 25 mm.

FIG. 3 is a perspective view showing a tilter.

FIG. 4 is a perspective view showing a tilter.

FIG. 5 is a sectional view showing the operation of the ladder cord support device.

FIG. 6 is a cross-sectional view showing a ladder cord supporting device that supports a ladder cord having a width of 35 mm.

FIG. 7 is a sectional view showing the operation of the ladder cord support device.

FIG. 8 is a side view showing a conventional ladder cord support device.

FIG. 9 is a side view showing a conventional ladder cord support device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Head box 12a, 12b Ladder code 13a, 13b Slat 17 Slat angle adjusting shaft 19 Slat elevating motor 23 Tilter 27a, 27b Locking pair (locking groove)

Claims (6)

[Claims] 1. A slat angle adjusting shaft is rotatably supported in a head box and rotatably driven by a driving means, and a ladder cord is suspended and supported from a tilter which operates based on rotation of the slat angle adjusting shaft. In the horizontal blind slat angle adjusting device supporting a multi-stage slat on the ladder cord, the tilter is provided with a plurality of locking pairs for supporting ladder cords having different widths, and each ladder cord is provided from the locking pair. Slat angle adjustment device for horizontal blinds, which can be suspended and supported in the vertical direction. 2. The tilter has a slat angle adjusting shaft inserted into a shaft portion formed at a center portion thereof so as to be rotatable integrally with the slat angle adjusting shaft. The slat angle adjusting device for a horizontal blind according to claim 1, wherein a plurality of locking grooves capable of supporting an upper end portion of the ladder cord are provided on a support piece extending to the slat. 3. The horizontal blind slat angle adjusting device according to claim 2, wherein the locking groove is bent in a crank shape from the opening toward the base end. 4. The slat angle adjusting device for a horizontal blind according to claim 2, wherein the plurality of locking grooves are alternately opened on both sides of the support piece. 5. An upper surface of the support piece is provided with a recess around a base end of the locking groove, and a washer is provided at an upper end of the ladder cord, the washer being housed in the recess. The slat angle adjusting device for a horizontal blind according to any one of claims 2 to 4, wherein a cord is inserted into the locking groove and the washer is housed in the recess. 6. A slat angle adjusting shaft is rotatably supported in a head box and rotatably driven by an electric motor, and a ladder cord is suspended and supported from a tilter that operates based on the rotation of the slat angle adjusting shaft. A slat angle adjusting device for an electric blind, wherein a plurality of slats are supported on the ladder cord, wherein the tilter is configured to rotate slats having different widths by the same angle based on the same rotation angle of the slat angle adjusting shaft. A slat angle adjusting device for an electric blind, wherein a plurality of locking pairs are provided in the slat angle adjusting device.