JP2000314283A - Slat angle adjusting device of horizontal blind - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a slat angle adjusting device which does not change the turning direction of a slat with respect to the rotational direction of an operation device even when either the left operation or the right operation is selected. SOLUTION: A gear box comprises transmission gear devices 18a, 18b, 19, 20, 21a, 21b to match the turning direction of the slat with respect to the rotational direction of an input shaft 9 even when a horizontal blind is used for either the right operation or the left operation by reversing the turning direction of the slat with respect to the turning direction of the input shaft 9 when the direction of the input shaft 9 with respect to a head box is switched.

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 Conventionally, there are the following types of horizontal blinds. A plurality of slats are suspended from the head box via a plurality of ladder cords, and a bottom rail is suspended from the lower end of the ladder cord.
In addition, multiple lifting cords are inserted into each slat,
One end of the lifting cord is connected to the bottom rail, and the other end is guided into the head box and connected to an operating device.

The slats are raised and lowered by raising and lowering the bottom rail through the lifting cord by operating the operating device. Further, the angle of the slats is adjusted in the same phase through the ladder cord by operating the operation device.

As one type of the operating device, an angle adjusting shaft is rotatably supported in a head box.
A gear mechanism is connected to an end of the angle adjusting shaft, an input shaft of the gear mechanism protrudes out of the head box from an opening provided in the head box, and an operation rod is connected to a tip of the input shaft. Some slats can be angle-adjusted by rotating an angle adjustment shaft via a gear mechanism by a rotation operation of an operation rod.

In addition, the lifting cord is guided to one side in the head box, and hangs out of the head box through a weight drop prevention device provided in the head box. Then, when the lifting cord is pulled out from the head box, the bottom rail is pulled up. When the lifting operation of the lifting cord is stopped, the self-weight drop prevention device is activated, and the slats and the bottom rail are suspended and supported at desired positions.
Further, when the operation of the self-weight drop prevention device is released, the slats and the bottom rail are lowered based on their own weights.

[0006] In such a horizontal blind, an operating device is usually provided at either the right or left end of the head box, and an operating rod and a lifting cord are hung from the operating device.

Therefore, there is a problem that the horizontal blind assembled for the left operation cannot be used for the right operation and the horizontal blind assembled for the right operation cannot be used for the left operation.

Therefore, in the horizontal blinds described in JP-A-6-200685 and JP-A-9-78963, an opening is provided from the bottom surface of the head box to the lower part of the side surface at the mounting position of the operating device. To rotate the operating device so that the operating rod and the lifting / lowering cord can hang down to the rear side of the head box.

In such a horizontal blind, if the operating device is rotated in the head box to select a direction in which the operating rod is hung from the head box, and the operating rod is installed so as to protrude into the room, The same horizontal blind can be used for left operation or right operation.

[0010]

However, in the above-mentioned horizontal blind, the rotation direction of the slat with respect to the rotation direction of the operation rod is opposite to the rotation direction of the operation rod between the case of the left operation and the case of the right operation. Become.

Therefore, a number of such horizontal blinds are arranged side by side along the window surface, and are located at one end in order to prevent interference between the operating rods of the horizontal blind located at both ends and the wall surface. When the blinds for left operation are used for left operation and the horizontal blinds at the other end are used for right operation, even when the slats of each blind are operated in the same direction, it is necessary to turn the operation rod in the opposite direction. Therefore, there is a problem that operation convenience is poor.

It is an object of the present invention that the operating device for adjusting the angle of the slat is attached to the headbox by rotating it in the front-rear direction so that it can be used for both left operation and right operation. It is an object of the present invention to provide a slat angle adjusting device which does not change the rotation direction of the slat with respect to the rotational operation direction of the operation device, regardless of whether the operation is performed for the left operation or the right operation.

[0013]

According to a first aspect of the present invention, a gear box is provided in a head box, and an input shaft of the gear box is rotated to rotate the input shaft. Rotate the adjustment axis,
The input shaft is operated from any side in the front-rear direction of the head box by allowing the slats suspended and supported from the head box to be adjustable in angle and rotating and attaching the gear box to the head box. In the horizontal blind slat angle adjusting device in which the horizontal blind can be used for both right operation and left operation, the direction of the input shaft with respect to the headbox is replaced in the gear box. When
By reversing the rotation direction of the slat with respect to the rotation direction of the input shaft, the rotation direction of the slat with respect to the rotation direction of the input shaft is the same regardless of whether the horizontal blind is used for right operation or left operation. A transmission gear device is provided.

According to a second aspect of the present invention, the gear box is capable of changing a mounting angle with respect to the head box so that the input shaft projects in any of the front and rear directions of the head box. Providing two output gears into which an adjustment shaft can be inserted, and meshing the output gears with each other, and when the mounting angle of the gear box is changed, the output gear into which the angle adjustment shaft is inserted is changed from one to the other. The output gear is arranged so as to be changed, and the number of gears between the input shaft and the output gear is increased or decreased by one.

According to a third aspect of the present invention, the head box is formed symmetrically with respect to the front-rear direction, and the gear box is formed symmetrically with respect to the center line of the input shaft. And the output gear can be replaced with respect to the center line of the input shaft so that when the gearbox is replaced with the headbox, the output gear into which the angle adjusting shaft is inserted is changed from one to the other. It was positioned in line symmetry.

According to a fourth aspect of the present invention, the operation rod is suspended from the input shaft, and an elevating cord for raising and lowering the slat is inserted through the operation rod. According to a fifth aspect of the present invention, the head box is provided with a positioning hole for positioning the gear box in the longitudinal direction of the head box, and the gear box is provided with a fitting portion capable of fitting into the positioning hole.

According to a sixth aspect of the present invention, the gear box includes a first gear box capable of changing a mounting angle with respect to the head box such that the input shaft projects in any of the front and rear directions of the head box; And a second gear box operating as a gear device, wherein the first gear box and the second gear box are provided separately.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) In a horizontal blind shown in FIGS. 1 and 2, a head box 1 is attached to a window frame or the like via a mounting bracket 1a. Numerous slats 3 are supported by a plurality of ladder cords 2 suspended from the head box 1, and a bottom rail 4 is suspended from the lower end of the ladder cord 2.

Above each of the ladder cords 2, a support member 5 is provided in the head box 1, and an upper end of the ladder cord 2 has a code drum 6 rotatably supported by the support member 5. It is attached to.

A hexagonal rod-shaped angle adjusting shaft 7 is fitted into the code drum 6, and one end of the angle adjusting shaft 7 is described later in a gear box 8 provided at one end of the head box 1. It is inserted into the output gear.

The input shaft 9 of the gear box 8 projects obliquely downward from the front surface of the head box 1 and has an operating rod 11 at the tip thereof via a universal joint 10.
Are suspended and supported.

When the operating rod 11 is rotated, the angle adjusting shaft 7 is rotated via a gear mechanism in the gear box 8, and the cord drum 6 is rotated with the rotation of the angle adjusting shaft 7. One of the warps of the ladder cord 2 is pulled up, and each slat 3 is rotated.

An elevating cord 12 parallel to each ladder cord 2 is inserted through each slat 3, and one end of the elevating cord 12 is connected to the bottom rail 4. The other end of the elevating cord 12 is guided into the head box 1 and, as shown in FIG. 3, is connected to one end of the head box 1 via a guide roller 13 and a stopper device 14 disposed in the support member 5. You will be guided towards.

An elevating cord 12 guided to one end of the head box 1 is inserted into the operating rod 11 through a guide roller (not shown) in the gear box 8, and a cord is provided below the operating rod 11. It is attached to the equalizer 15.

Then, when the cord equalizer 15 is pulled downward and the lifting cord 12 is pulled out of the head box 1, the bottom rail 4 is pulled up and the lower slat 3 is pulled up.
Are sequentially pulled up, and if the lifting cord 12 is pulled into the headbox 1 based on the weight of the bottom rail 4 and the slat 3, the bottom rail 4 and the slat 3 are lowered.

The stopper device 14 includes a lifting cord 12
Each time is pulled downward, the state in which the movement of the elevating cord 12 in the direction of lowering the bottom rail 4 is prevented, and the state in which the elevating cord 12 can be freely moved to lower the bottom rail 4 can be alternately selected. Things.

Therefore, if the state in which the movement of the elevating cord 12 in the lowering direction of the bottom rail 4 is prevented is selected, the slat 3 operates as a weight lowering prevention device. Next, the configuration of the gear box 8 will be described. As shown in FIG. 4, the head box 1 is formed of an extruded aluminum material in the form of a groove having an upper opening, and has a sectional shape symmetrical in the front-rear direction. An opening 16 is formed from one end of the head box 1 to the mounting position of the gear box 8, and from the bottom surface to a vertically intermediate portion of the front and rear side surfaces.

Above the opening 16, two positioning holes 37 are formed in the left and right directions in the recesses formed on the front and rear sides of the head box 1. The gear box 8 has a case 17 formed in line symmetry with respect to the axis of the input shaft 9 and, as shown in FIG. 4 and FIG.
It can be fitted inside.

In the gear box 8, when the gear box 8 is fitted to the head box 1, a fitting portion 38 fitted to the positioning hole 37 is symmetrical with respect to the axis of the input shaft 9. Is formed. The gear box 8 fitted to the head box 1 is positioned in the longitudinal direction of the head box 1 with the fitting portion 38 fitted in the positioning hole 37.

As shown in FIG. 5, the input shaft 9 is rotatably supported by the gear box 8, and the head box 1
A first helical gear 18 is formed at the base end located inside.

A transmission shaft 19 is rotatably supported in the gear box 8, and a second helical gear 18b meshed with the first helical gear 18a is formed at one end of the transmission shaft 19. A worm 20 is formed at the other end.

The worm 20 has a first worm wheel 21 rotatably supported by the gear box 8.
The second worm wheel 21b, which is also rotatably supported by the gear box 8, is engaged with the first worm wheel 21a. The first and second worm wheels 21a and 21b have the same number of teeth.

Therefore, when the input shaft 9 is rotated, the transmission shaft 19 is rotated. Based on the rotation of the transmission shaft 19, the first and second worm wheels 21a and 21b rotate in the opposite direction at the same rotation speed. Is done.

The first and second worm wheels 21
Hex holes 22a and 22b, into which the angle adjusting shaft 7 can be inserted, are formed at the center portions of the holes 21a and 21b, respectively. The centers of the hexagonal holes 22a and 22b are positioned so as to be symmetrical with respect to the axis of the input shaft 9, and when the gear box 8 is attached to the head box 1 as shown in FIG. When the hole 22a is located on the center line of the head box 1 and the gear box 8 is attached to the head box 1 as shown in FIG.
It is located on the center line of.

The angle adjusting shaft 7 is located on the center line of the head box 1 in the upper part of the head box 1, and when the gear box 8 is attached to the head box 1 as shown in FIG. One worm wheel 21a
The gear box 8 can be fitted into the hexagonal hole 22b of the second worm wheel 21b when the gear box 8 is attached to the head box 1 as shown in FIG.

As shown in FIGS. 4 and 9, a tilt cover 23 is attached to the head box 1 and a gear box 8 is provided.
The opening 1 exposed to the rear of the input shaft 9 with the
6 is covered.

The tilt cover 23 is formed at its upper end with a fitting portion 39 which can be fitted into a positioning hole 37 formed in the head box 1. The head box 1 is attached by fitting into the positioning holes 37.

Further, box caps 24 are attached to both ends of the head box 1, and the open ends of the head box 1 are covered. The specific configuration of the stopper device 14 will be described with reference to FIGS. As shown in FIG.
A slider rail 26 is mounted in the cylindrical case 25 of the stopper device 14, and the slider rail 26
On the side of the support member 5, a slope rising outward is formed, and on the slope, saw blade-shaped irregularities 27 are formed.

A slide block 28 is supported on the slider rail 26 so as to be movable along the longitudinal direction of the head box 1, and long holes formed in both sides of the slide block 28 on the side of the unevenness 27 in the vertical direction. 29,
The support shaft 30a of the roller 30 is supported. Therefore, the roller 30 is supported by the slide block 28 so as to be rotatable and movable in the vertical direction.

When the slide block moves in the direction of arrow A shown in FIG. 6, the roller 30 engages with the unevenness 27 and moves upward while rotating on the unevenness 27.

A leaf spring 3 is provided in the slide block 28.
The lifting cord 12 is inserted between the leaf spring 31 and the top plate of the slide block 28 and above the roller 30.

The lifting cord 12 is sandwiched between the leaf spring 31 and the top plate of the slide block 28 by the urging force of the leaf spring 31, and a predetermined distance is formed between the lifting cord 12 and the slide block 28. The frictional force is ensured, and the slide block 28 moves with the movement of the lifting cord 12.

A cam groove 32 shown in FIG. 7 is formed on the upper surface of the slider rail 26, and a cam shaft 33 engaging with the cam groove 32 is formed on the lower surface of the slide block 28.
Is a direction orthogonal to the moving direction of the slide block 28,
That is, the head box 1 is supported so as to be movable in the front-rear direction.

In such a stopper device 14, the lifting cord is moved by the weight of the slat 3 and the bottom rail 4 as shown in FIG.
, The slide block 28 moves in the same direction, and the roller 30 moves while rotating on the unevenness 27.

Then, as shown in FIG.
2 is sandwiched between the roller 30 and the top plate of the case 25,
Further movement in the same direction is prevented. At this time, the cam shaft 33 is at the position P1 shown in FIG.

Next, when the cord equalizer 15 is pulled downward and the lifting cord 12 is moved in the direction of arrow B shown in FIG. 8, the slide block 28 moves in the same direction and the roller 30 clamps the lifting cord 12. Is released, the cam shaft 33 moves in the cam groove 32 in the direction of arrow D shown in FIG. 7 to reach the position P2, and further movement of the slide block 28 in the same direction is prevented.

When the lifting cord 12 is further pulled out of the head box 1 from this state, the lifting cord 12 moves in the stopper device 14 while rubbing with the leaf spring 31 and the slide block 28, and the bottom rail 4 and the slat 3 are moved. Will be pulled up.

After the slat 3 is pulled up to the desired height and the lifting cord 12 is released, the lifting cord 12 moves in the direction of arrow A shown in FIG. 6 due to the weight of the slat 3 and the bottom rail 4, and the slide block 28 moves in the same direction. The cam shaft 33 moves in the direction of arrow C shown in FIG.
It reaches the P3 position of 2.

Then, further movement of the slide block 28 in the same direction is prevented, and the state shown in FIG. 6 is obtained.
In this state, the lifting cord 12 is not pinched by the rollers 30, so that the lifting cord 12 moves while rubbing with the leaf spring 31 and the slide block 28, and the slat 3 and the bottom rail 4 can be lowered by their own weight. Becomes

In this state, when the lifting cord 12 is pulled downward, the slide block 28 moves, and the camshaft 33 moves in the cam groove 32 in the direction of arrow D to reach the position P4. In this state, like the P2 position, the lifting cord 12
Can be pulled out from the head box 1 and the bottom rail 4 and the slats 3 can be pulled up to arbitrary positions.

Next, when the lifting cord 12 is released, the weight of the bottom rail 4 and the slat 3 causes the lifting cord 1 to move.
6, the slide block 28 moves in the direction of arrow A shown in FIG. 6, and the camshaft 33 moves in the cam groove 32 from the position P4 to the position P1.

Then, as shown in FIG. 8, the lifting cord 12 is sandwiched between the roller 30 and the case 25, and the further movement of the lifting cord 12 in the same direction is prevented. Therefore, the slats 3 and the bottom rail 4 are prevented from falling under their own weight, and the slats 3 are suspended and supported at a desired height.

The operating rod 11 is a hollow thick shaft having the upper end of a hollow thin shaft 34 attached to the universal joint 10 and having a length greater than the length of the thin shaft 34. 35 are connected so as to be slidable in the axial direction and non-rotatable with each other.

A hollow grip 36 is attached to the lower end of the thick shaft 35, and below the grip 36,
The code equalizer 15 is suspended from the lower end of the lifting cord 12 inserted through the thin shaft 34, the thick shaft 35, and the grip 36.

Therefore, when the grip 36 of the operating rod 11 is gripped and rotated, the input shaft 9 of the gear box 8 is rotated via the universal joint 10. Also, by gripping the grip 36 and pushing it upward or pulling it downward, the operating rod 1 can be moved within the length of the thin shaft 34.
1 can be expanded and contracted.

Next, the operation of the horizontal blind configured as described above will be described. When the operating rod 11 is rotated,
The angle adjusting shaft 7 is rotated via the gear box 8, and one of the warps of the ladder cord 2 is pulled up by the code drum 6 which is rotated integrally with the angle adjusting shaft 7, and the slat 3 is rotated. Therefore, the angle of the slat 3 is adjusted by rotating the operation rod 11.

Each time the lifting cord 12 is pulled slightly downward by the operation of the stopper device 14, the lifting cord 12 can be pulled into the head box 1 based on the weight of the slats 3 and the bottom rail 4, and the lifting cord 12 can be alternately selected.

When the elevating cord 12 is pulled into the head box 1 with the operating rod 11 contracted, the bottom rail 4 can be lowered to the lowermost limit. In this state, when the cord equalizer 15 is pulled downward and the lifting cord 12 is pulled out of the head box 1, the bottom rail 4 is pulled up.

Then, after the bottom rail 4 and the slat 3 are pulled up to a desired height, the stopper device 14 is operated to prevent the bottom rail 4 and the slat 3 from falling by their own weights. Is done.

At this time, as shown in FIG. 11 (b), the elevating cord 12 is exposed downward from the grip 36 of the operating rod 11. When the operating rod 11 is extended from this state, as shown in FIG. As shown in c), the lifting cord 12 can be stored in the operating rod 11.

Although the horizontal blind is for the right operation in the state shown in FIG. 1, it can be changed to the left operation. The procedure for the change will be described. First, the box cap 24 attached to the end of the head box 1 near the gear box 8 is removed.

Next, the gear box 8 is pulled out integrally with the operating rod 11 toward the end of the head box 1, and the tilt cover 23 is removed from the head box 1. Then, the gear box 8 is rotated rearward by 90 degrees, and the fitting portion 38 that has been located near the bottom surface of the head box 1 is fitted into the positioning hole 37 and inserted into the head box 1 again. The fitting portion 39 is fitted in the positioning hole 37 on the opposite side, and is attached to the side surface on the opposite side of the head box 1.
Cover.

Then, the mounting state of the gear box 8 to the head box 1 is changed from the state shown in FIG. 4 to the state shown in FIG. 9, and is fitted into the hexagonal hole 22a of the first worm wheel 21a as shown in FIG. As shown in FIG. 10, the inserted angle adjustment shaft 7 is moved to the second worm wheel 21.
b is inserted into the hexagonal hole 22b.

As a result, compared to the state shown in FIG.
In the state shown in (1), the second worm wheel 21b is extraly interposed between the input shaft 9 and the angle adjustment shaft 7, and the rotation direction of the angle adjustment shaft 7 is opposite to the rotation direction of the input shaft 9. Becomes

Next, the box cap 24 is attached to the end of the head box 1, and the front and rear of the head box 1 are interchanged and attached to the mounting bracket 1a. Then, the operation rod 11 is suspended and supported from the left end of the head box 1 to be used for left operation, and for the right operation shown in FIG. 5, for example, the rotation direction of the angle adjusting shaft 7 when the operation rod 11 is operated to rotate right. And the rotation direction of the angle adjustment shaft 7 when the operation rod 11 is rotated rightward for the left operation shown in FIG.

Therefore, in both the right operation and the left operation, the rotation direction of the slat 3 can be made to coincide with the rotation direction of the operation rod 11. With the horizontal blind configured as described above, the following operational effects can be obtained.

(1) The angle of the slat 3 can be adjusted by rotating the operation rod 11. (2) By pulling down the cord equalizer 15 and pulling out the elevating cord 12 from the head box 1, the bottom rail 4 can be pulled up and the slat 3 can be pulled up.

(3) Each time the lifting cord 12 is pulled downward,
The stopper device 14 provided in the head box 1 prevents movement of the elevating cord 12 based on the weight of the slats 3 and the bottom rail 4 and the movement of the elevating cord 12 based on the weight of the slat 3 and the bottom rail 4. The user can select a state in which the slat 3 and the bottom rail 4 are operated.
Slats 3 can be suspended and supported at a desired height.

(4) By releasing the operation of the stopper device 14, the slats 3 and the bottom rail 4 can be lowered by their own weight. (5) The gear box 8 is attached to the head box 1 by rotating the head box 90 by 90 degrees, and the head box 1 is attached to a window frame or the like by changing its front-rear direction so that it can be used for right operation or left operation Either can be selected. At this time, by fitting the fitting part 38 of the gear box 8 into the positioning hole 37 provided in the head box 1, the gear box 8 can be easily positioned in the longitudinal direction of the head box 1.

(6) Regardless of which of the right operation and the left operation is selected, it is automatically selected whether or not the number of gears interposed between the input shaft 9 and the angle adjusting shaft 7 increases by one step. Thus, the rotation direction of the slat 3 can be made to coincide with the rotation direction of the operation rod 11.

(7) The case 25 of the gear box 8 is formed symmetrically with respect to the axis of the input shaft 9, and the first and second worm wheels 21 a and 21 b into which the angle adjusting shaft 7 is inserted.
Are arranged symmetrically with respect to the axis of the input shaft 9 and when the gear box 8 is inserted into the head box 1, when one of the first and second worm wheels 21a and 21b has an angle adjusting shaft. Since the fitting operation is performed, it is possible to easily perform a change operation from right operation to left operation or from left operation to right operation.

(8) Since the operating rod 11 can be extended and contracted,
When the slat 3 is lowered and the length of the elevating cord 12 hung from the head box 1 is reduced, the length of the operating rod 11 can be reduced to cover the elevating cord 12 with the operating rod 11, and the slat 3 can be moved. When the elevating cord 12 is pulled out from the head box 1 for pulling up, the operating rod 11 is stretched and the elevating cord 12 hanging from the head box 1 can be covered with the operating rod 11.

(9) Since the elevating cord 12 hanging from the head box 1 can always be covered with the operating rod 11, unnecessary swinging of the elevating cord 12 can be prevented, and the appearance can be improved. (Second Embodiment) FIGS. 12 to 14 show a second embodiment. In this embodiment, the gear box 8 of the first embodiment is replaced with a first gear box 41 and a second gear box 42 shown in FIG.

As shown in FIG. 13, the first gear box 41 has a case 43 with a side surface shape of the head box 1.
Are formed in a square shape having one side in the front-rear width, and a spacer 43a is fitted between an upper surface thereof and an upper edge of the head box 1, and the case 43 is positioned in the vertical and horizontal directions. Further, a box cap 24 is fitted to an end of the head box 1.

An input shaft 45 is rotatably supported on the case 43 in a diagonal direction of the case 43, and a bevel gear 46a is formed at a base end of the input shaft.
a is located at the center of the case 43, and the tip end projects obliquely downward from the headbox 1, and the operating rod 44 is suspended and supported at the tip end.

A bevel gear 46b meshing with the bevel gear 46a is rotatably supported by the case 43, and a transmission shaft 47 protruding from the second gear box 42 is detachably mounted on the bevel gear 46b. Mated.

Therefore, when the input shaft 45 is rotated, the transmission shaft 47 is rotated via the bevel gears 46a and 46b. Also, by removing the spacer 43a, pulling the case 43 out of the head box 1 and rotating it by 90 degrees, and fitting it back into the head box 1, the projecting direction of the input shaft 45 is changed as shown by the chain line in FIG. 1 can be replaced in the front-back direction.

The second gear box 42 is disposed in the head box 1 on the side of the first gear box 41 and the first gear box 41 of the case is provided.
A connecting member 48 is rotatably supported on the side of the side, and the base end of the transmission shaft 47 is fitted to the connecting member 48.

A gear shaft 49 is rotatably supported by the second gear box 42 along the longitudinal direction of the head box 1, and bevel gears 50a and 50b are integrally mounted on the gear shaft 49 at a predetermined interval. Is formed. The angle adjusting shaft 7 is fitted to one end of the gear shaft 49.

Between the bevel gears 50a and 50b,
The bevel gear 50 is provided on the upper surface of the second gear box 42.
The bevel gear 51 that can mesh with any one of the gear shafts a and 50b is supported rotatably and movably in the axial direction of the gear shaft 49.

That is, as shown in FIG. 14, a rectangular guide hole 52 is formed on the upper surface of the second gear box 42, and a square guide member 53 is movably supported in the guide hole 52. , The guide member 53 has the bevel gear 51
Is rotatably supported.

When the guide member 53 is moved to one end of the guide hole 52, the bevel gear 51 meshes with the bevel gear 50a at one end of the gear shaft 49, and the guide member 53 is moved to the other end of the guide hole 52. , The bevel gear 51 meshes with the bevel gear 50b on the other end side of the gear shaft 49.

On the sliding surface between the guide member 53 and the guide hole 52, a protrusion 54 is formed on the guide member.
2 has a concave portion 55 that engages with the protrusion 54. Then, in a state where the protrusion 54 is fitted into the one concave portion 55 of the guide hole 52, the bevel gear 51 is engaged with the one bevel gear 50a, and the protrusion 54 is fitted into the other concave portion 55 of the guide hole 52. In the state, the bevel gear 51 meshes with the other bevel gear 50b.

An operation lever 5 is provided on the upper surface of the guide member 53.
The guide member 53 is movable in the guide hole 52 by operating the operation lever 56.

A flexible tube 57 is inserted through the operation lever 56, and one end of the flexible tube 57 is connected to the base end of the bevel gear 51, and the other end is connected to the connecting member 48. Therefore, when the transmission shaft 47 is rotated, the bevel gear 51 is rotated via the flexible tube 57.

In the slat angle adjusting device configured as described above, the bevel gears 51, 5 for right operation shown in FIG.
When the input shaft 45 is rotated by operating the operating rod 44 in a state where the gears 0a are engaged, the bevel gear 51 is rotated via the bevel gears 46a and 46b, the transmission shaft 47, the connecting member 48, and the flexible tube 57. You.

Then, the angle adjusting shaft 7 is rotated via the bevel gear 50a, and the slat 3 is rotated based on the rotation of the angle adjusting shaft 7. When the slat angle adjusting device is used for left operation, the box cap 24 is removed from the head box 1, the spacer 43a is removed from the head box 1, and then the first gear box 41 is removed from the head box 1.

Then, the first gear box 41 is rotated 90 degrees in the front-rear direction and attached to the head box 1, and the transmission shaft 47 is fitted to the bevel gear 46b. Next, spacer 4
3a is attached to the head box 1, the first gear box 41 is fixed, and the box cap 24 is fitted to the end of the head box 1.

Then, the operation lever 56 is operated to engage the bevel gear 51 with the bevel gear 50b. Then, as shown by a chain line in FIG. 13, the input shaft 45 is protruded to the opposite side of the head box 1. An angle adjusting device is configured.

In such a slat angle adjusting device, as in the case of the right operation, when the operating rod 44 is rotated, the angle adjusting shaft 7 is rotated via the first and second gear boxes 41 and 42. You.

At this time, since the bevel gear 51 is meshed with the bevel gear 50b, the rotation of the angle adjusting shaft 7 with respect to the rotation direction of the operating rod 44 is in the opposite direction to the right operation.
Therefore, the rotation direction of the slat 3 as viewed from the indoor side with respect to the rotation direction of the operation rod 44 is the same as that for the right operation.

With the slat angle adjusting device configured as described above, the following operational effects can be obtained. (1) The first gear box 41 is attached by rotating the head box 1 by 90 degrees with respect to the head box 1, and the head box 1 is attached to a window frame or the like by changing its front-rear direction so that the right operation or the left operation is performed. You can choose one for

(2) When the operation is changed from the right operation to the left operation or from the left operation to the right operation, the operation lever 56 of the second gear box 42 is operated and the bevel gear 51 is moved. By switching the meshing bevel gears 50a and 50b, the rotation direction of the slat 3 can be made to coincide with the rotation direction of the operation rod 44.

The above embodiment can be modified as follows. The gear mechanism for transmitting the rotation of the input shaft 9 to the angle adjusting shaft 7 may be any gear other than the above-described helical gear and worm mechanism.

[0095]

As described above in detail, the present invention is characterized in that the operating device for adjusting the angle of the slat is attached to the head box by rotating it in the front-rear direction, so that it can be used for the left operation and the right operation. Provided is a slat angle adjustment device that does not change the rotation direction of the slat with respect to the rotation operation direction of the operation device, regardless of which of the left operation and the right operation is selected in a horizontal blind that can be used for any of them. can do.

[Brief description of the drawings]

FIG. 1 is a front view showing a horizontal blind according to a first embodiment.

FIG. 2 is a plan view showing a horizontal blind.

FIG. 3 is a front view showing a slat driving device in a head box.

FIG. 4 is a side view showing a gear box for right operation.

FIG. 5 is a side view showing an internal configuration of a gear box for right operation.

FIG. 6 is a sectional view showing a stopper device.

FIG. 7 is a plan view showing a cam groove of the stopper device.

FIG. 8 is a sectional view showing the operation of the stopper device.

FIG. 9 is a side view showing a gear box for left operation.

FIG. 10 is a side view showing an internal configuration of a gear box for left operation.

FIG. 11 is a front view showing the operation of the operation rod.

FIG. 12 is a sectional view showing a second embodiment of the slat angle adjusting device.

FIG. 13 is a side view showing a first gear box according to the second embodiment.

FIG. 14 is a cross-sectional view illustrating a guide member according to the second embodiment.

[Explanation of symbols]

Reference Signs List 1 head box 3 slat 7 angle adjusting shaft 8 gear box 9 input shaft 18a, 18b transmission gear device (first and second bevel gears) 19 transmission gear device (transmission shaft) 20 transmission gear device (worm) 21a, 21b Transmission gear device (first and second worm wheels) 50a, 50b, 51 Transmission gear device (bevel gear)

Claims (6)

[Claims] 1. A gear box is provided in a head box, and an input shaft of the gear box is operated to rotate, thereby rotating and driving an angle adjusting shaft rotatably supported in the head box. The angle of the slats suspended from the headbox is adjustable, and the gearbox is rotated and attached to the headbox, so that the input shaft is operated from which side in the front-back direction of the headbox. In the horizontal blind slat angle adjusting device in which the horizontal blind can be used for both the right operation and the left operation, the direction of the input shaft with respect to the headbox is replaced in the gear box. At this time, the rotation direction of the slat with respect to the rotation direction of the input shaft is reversed, and the horizontal blind is operated for right operation and Be used in any manipulation, horizontal blind slats angle adjusting apparatus characterized in that a transmission gear apparatus for matching the rotational direction of the slat with respect to the rotational direction of the input shaft. 2. The gear box is capable of changing a mounting angle with respect to a head box such that the input shaft protrudes in any one of front and rear directions of the head box,
The transmission gear device is provided with two output gears into which the angle adjusting shaft can be inserted, and the output gears mesh with each other, and when the mounting angle of the gear box is changed, the angle adjusting shaft is inserted. The output gear is arranged so that the output gear to be changed from one to the other, and the number of gears between the input shaft and the output gear is increased or decreased by one. The slat angle adjusting device for the horizontal blind according to the above description. 3. The head box is formed symmetrically with respect to the front-rear direction, and the gear box is formed symmetrically with respect to the center line of the input shaft, and is replaceable with respect to the head box in the front-rear direction. The output gear is symmetrical with respect to the center line of the input shaft so that when the gearbox is replaced with the headbox, the output gear into which the angle adjusting shaft is inserted is changed from one to the other. The slat angle adjusting device for a horizontal blind according to claim 2, wherein 4. The horizontal type according to claim 1, wherein an operation rod is suspended from the input shaft, and an elevating cord for elevating the slat is inserted through the operation rod. Blind slat angle adjustment device. 5. The head box is provided with a positioning hole for positioning the gear box in a longitudinal direction of the head box, and the gear box is provided with a fitting portion which can be fitted in the positioning hole. Claim 1.
The slat angle adjusting device for a horizontal blind according to any one of claims 1 to 3. 6. The first gearbox, wherein the angle of attachment to the headbox can be changed so that the input shaft projects in any of the front-rear direction of the headbox, and the transmission gear device. The slat angle adjusting device for a horizontal blind according to claim 1, further comprising an operating second gear box, wherein the first gear box and the second gear box are provided separately.