JP2902252B2 - Vertical blind slat drive - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slat drive for moving a vertical blind slat along a hanger rail and adjusting the angle.

[0002]

2. Description of the Related Art Conventionally, as one type of vertical blinds,
There are the following. In other words,
In the vertical blind disclosed in Japanese Patent No. 3919, a large number of runners are movably supported along hanger rails (support rails), and slats are suspended from each runner.

A tilt shaft (rotating shaft) is rotatably supported in the hanger rail, and the tilt shaft is inserted through the runner. An operation code (string) stretched in the hanger rail is attached to a lead runner located at the head of each runner. The operation code is inserted through an insertion hole provided in each runner, guided in the hanger rail, and is hung from one end of the hanger rail.

The slats are pulled out and folded by operating the operation code to move the lead runner. In addition, when the tilt shaft is rotated by operating the operation cord that is also hung from one end of the hanger rail, the rotation of the tilt shaft is transmitted to the slat suspension shaft via the worm gear disposed in each runner. The angle of each slat is adjusted based on the rotation of the slat suspension shaft.

On the other hand, in a vertical blind disclosed in Japanese Patent Publication No. 1-375551, an endless chain is mounted on a plurality of slat runners movably supported in a hanger rail, and one end of the chain is provided. Is hung on one end of the hanger rail. An operating rod is attached to the leading slat runner, and when the leading runner is moved via the operating rod, subsequent slat runners are sequentially pulled out via the chain.

Further, the angle of the slats hanging from each slat runner can be adjusted by operating a chain hanging from one end of the hanger rail. Therefore, the chain functions as a spacer for setting the interval between the slat runners and also as a slat angle adjusting mechanism.

[0007]

However, in the vertical blind disclosed in Japanese Utility Model Publication No. 62-33919, it is necessary to operate an operation code when performing a slat transfer operation, and to adjust the slat angle. Is required to operate the operation string, and each requires a separate operation. In addition, since it is necessary to adjust the angle of the slats via the tilt shaft inserted through each runner, the tilt shaft is limited to a substantially linear shape, and the hanger rail is also limited to a substantially linear shape. is there.

Also, there is a problem that a spacer for setting the interval between the runners is required separately from the slat transfer device using the operation cord and the slat angle adjusting device using the tilt shaft.

On the other hand, in the vertical blind disclosed in Japanese Patent Publication No. 1-375551, a chain can be used as a slat angle adjusting mechanism and a spacer for setting an interval between runners. However, there is a problem that it is necessary to operate the operating rod when performing the slat transfer operation, and it is necessary to operate the chain when performing the slat angle adjustment. is there.

An object of the present invention is to provide a slat angle adjusting mechanism having a spacer function for setting the distance between runners, to enable slat transfer and angle adjustment by a common operation, and to cope with a curved hanger rail. It is an object of the present invention to provide a vertical blind slat drive that is made possible.

[0011]

In order to achieve the above object, according to the present invention, a number of runners are movably supported in a hanger rail, and slats are respectively suspended from and supported by the runners. At one end of the hanger rail is provided a driving gear rotatable by operating means, and an endless transfer belt is provided between the driving gear and a driven gear rotatably supported at the other end of the hanger rail. A lead tilt gear that is engaged and engages with one of the transfer belts stretched in parallel on both sides of the leading runner positioned at the leading end of the multiple runners can rotate only within a certain angle range. The leading runner is rotated by the rotation of the lead tilt gear to rotate a slat suspended and supported by the leading runner. Each runner is provided with a tilt gear for rotating a slat suspended and supported by the runner in accordance with the rotation of the runner, and each of the tilt gears controls the rotation of the tilt gear of the first runner. Of the runners, and are connected by a tilt belt that sets the distance between the runners when the slats are pulled out.

[0012]

When the drive gear is rotated by the above means and the transfer belt is moved in the slat pull-out direction between the drive gear and the driven gear, the lead tilt gear is rotated by a predetermined angle or more. Thereafter, the lead tilt gear moves together with the transfer belt, and the leading runner is pulled out, so that the subsequent runner is pulled out via the tilt belt. Therefore, the slats suspended and supported by each runner are pulled out at equal intervals.

When the transfer belt is moved in the slat folding direction with the leading runner pulled out to the maximum, the lead tilt gear is rotated, the tilt gear is rotated, and the slat suspended and supported by each runner is tilted. It is rotated via a belt. When the lead tilt gear is rotated by a certain angle or more, the leading runner moves together with the transfer belt, and each slat is sequentially folded.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the vertical blind shown in FIG. 1, a large number of runners 2 are movably supported in a hanger rail 1, and slats 3 are rotatably supported from each runner 2. Then, each of the runners 2 is transferred along the hanger rail 1 by operating the operation cord 4 hanging from one side of the hanger rail 1, and the slats 3 are pulled out and folded.
The angle of each slat 3 is adjusted.

The hanger rail 1 will be described in detail below. The upper ends of the hanger rails 1 are connected to each other by connecting metal fittings 6 shown in FIG. An operation box 7 is attached to the side. As shown in FIG. 5, a main shaft 8 is rotatably supported by the operation box 7, and a pulley 9 is fixed to an upper portion of the main shaft 8.

The operation code 4 is mounted on the pulley 9, and the operation code 4 is connected to the operation box 7 via a guide roller 10 rotatably supported by the operation box 7.
Hanged out. Therefore, when the operation code 4 is operated to rotate the pulley 9, the main shaft 8 is rotated.

A transfer drive gear 11 is fitted and fixed to the main shaft 8 below the pulley 9, and a transfer driven gear 12 is rotatably supported on the other side of the hanger rail 1. Between the two gears 11, 12, the same gears 11, 12
An endless transfer belt 13 meshing with the belt is mounted.
Therefore, when the main shaft 8 is rotated, the transfer drive gear 1 is rotated.
The transfer belt 13 is moved between the transfer belt 1 and the transfer driven gear 12.

Below the transfer drive gear 11, a tilt pulley 14 is rotatably supported on the main shaft 8, and the endless tilt belt 1 is mounted on the tilt pulley 14.
5 is mounted. A clutch spring 16 composed of a torsion coil spring is wound around the main shaft 8 below the tilt pulley 14, and is always rotatable integrally with the main shaft 8.

As shown in FIG. 6, both ends 17a and 17b of the clutch spring 16 are bent radially outward at positions close to each other, and a part of the lower edge of the tilt pulley 14 is provided between both ends 17a and 17b. Project as locking pieces 14a. When the main shaft 8 is rotated and one of the two ends 17a, 17b of the clutch spring 16 comes into contact with the locking piece 14a, the clutch spring 1
6 is set to be reduced in diameter and the frictional force with the main shaft 8 is increased. Therefore, the rotation of the main shaft 8 is transmitted to the tilt pulley 14 via the clutch spring 16.

A clutch support plate 18 is provided around the clutch spring 16. That is, the clutch support plate 18 is fixed to the operation box 7, and the through hole 19 through which the main shaft 8, the clutch spring 16 and the locking piece 14a are rotatably inserted is formed.

At a part of the inner peripheral edge of the through hole 19, a projection 19a which contacts the end of the clutch spring 16 is formed within a range of 60 degrees with respect to the center of the through hole 19.
Then, both end portions 17a of the clutch spring 16,
When any one of the projections 17b comes into contact with the projection 19a, the clutch spring 16 is expanded in diameter and the frictional force with the main shaft 8 is reduced, so that the main shaft 8 idles with respect to the clutch spring 16.

Accordingly, the clutch spring 16 and the tilt pulley 14 are connected to both ends 1 of the clutch spring 16.
It rotates integrally with the main shaft 8 within a range of 240 degrees until one of 7a and 17b comes into contact with the projection 19a. Both ends 17
After either a or 17b abuts on the projection 19a, the rotation of the clutch spring 16 and the tilt pulley 14 is prevented.

As shown in FIG. 3, the leading runner 2a of the plurality of runners 2 has traveling wheels 21 rotatably supported on both sides of a runner frame 20.
1 is rotatably supported by a guide groove 1a provided on the inner surface of the hanger rail 1. Accordingly, the runner frame 20 is supported on the hanger rail 1 via the traveling wheels 21 so as to be movable in the longitudinal direction.

At the center of the runner frame 20,
Lower pin 22 protruding downward from runner frame 20
a and an upper pin 22b protruding above the runner frame 20 is rotatably supported. Both pins 22a, 2
2b is connected via a clutch device 23 using a known torsion coil spring.

The slat 3 is suspended from the lower end of the lower pin 22a and is rotated with the rotation of the lower pin 22a. The lower pin 22a is connected to the upper pin 2
2b, the clutch device 2 is rotated.
After the slat 3 is rotated in the direction along the hanger rail 1, the slat 3 operates so as not to transmit the rotation of the upper pin 22b in the same direction to the lower pin 22b.

Above the runner frame 20, a lead tilt gear 24 is fitted and fixed to the upper pin 22b, and as shown in FIG.
The teeth 24b are engraved on substantially the outer circumference of the gear plate 24a. The lead tilt gear 24
A tilt gear 25 that meshes with the tilt belt 15 is formed on the outer periphery of the shaft of the lead tilt gear 24 below the gear plate 24a.
, The tilt belt 15 is mounted.

Near the left and right sides of the tilt gear 25, a pair of sandwiching rollers 26 are supported by the runner frame 20 in parallel with the tilt gear 25 and rotatably. By sandwiching the tilt belt 15 between the sandwiching rollers 26 and the tilt gear 25, the tilt gear 25 and the tilt belt 15 are securely meshed.

Above the gear plate 24a of the lead tilt gear 24, a cam protruding laterally within a range of 60 degrees with respect to the center of the coaxial part as shown in FIG. 27 are formed.

Above the lead tilt gear 24, the upper end of the upper pin 22b is connected to the lead tilt gear 2
4 is rotatably fitted to a rotation control member 28 that controls the rotation of the fourth member. Both sides of the rotation control member 28 are supported by guide pieces 29 provided on the inner side surface of the hanger rail 1 so as to be movable along the hanger rail 1 and non-rotatably with respect to the hanger rail 1. ing.

As shown in FIG. 8, the rotation control member 28
A cam hole 30 for rotatably accommodating the cam 27 of the lead tilt gear 24 is formed on the lower surface of. At the periphery of the cam hole 30 is formed a projection 31 projecting toward the center within a range of 60 degrees with respect to the center of the cam hole 30, and the cam 27 is engaged with the projection 31. ing. Accordingly, the lead tilt gear 24 moves from the state where one side of the cam 27 is engaged with the projection 31 to the state where the other side of the cam 27 is
1 can be rotated only in the range until it is engaged with, ie, in the range of 240 degrees.

As shown in FIG. 7, the transfer belt 13 is meshed with the lead tilt gear 24. That is, one of the transfer belts 13 located on both sides of the lead tilt gear 24
, And the lead tilt gear 24 is rotated with the movement of the transfer belt 13. When the cam 27 comes into contact with the projection 31 of the rotation control member 28 with the rotation of the lead tilt gear 24, the lead tilt gear 24
Is prevented from rotating further in the same direction, the lead tilt gear 24 is moved along the hanger rail 1 together with the transfer belt 13.

As shown in FIG. 4, each runner 2 following the leading runner 2a has a structure in which the lead tilt gear 24 and the rotation control member 28 are removed from the leading runner 2a. Then, the tilt belt 15 is meshed with the tilt gear 25 of each runner 2 so that the length of the tilt belt 15 between the leading runner 2a and the succeeding runner 2 and between the runners 2 is the same. I have.

Next, the operation of the vertical blind constructed as described above will be described. By the way, in the state where the leading runner 2a is pulled out to the maximum along the hanger rail 1,
The tilt belt 15 between the runners 2 and 2a is tensioned,
The interval between the runners 2 and 2a is made constant by the tilt belt 15. The distance between the runners 2 and 2a is determined by rotating each slat 3 in the direction along the hanger rail 1.
The side ends of the adjacent slats 3 are overlapped with each other, and the interval is set such that the vertical blind can be fully closed.

The operating cord 4 is operated in such a state and in a state where each slat 3 is suspended and supported in a direction perpendicular to the hanger rail 1 as shown in FIG. Then, the main shaft 8 is rotated via the pulley 9, the transfer drive gear 11 is rotated, and the transfer belt 13 is moved between the transfer drive gear 11 and the transfer driven gear 12.

The tilt pulley 14 is rotated by the rotation of the main shaft 8 via the clutch spring 16, and the tilt belt 15 is moved by the rotation of the tilt pulley 14.

When the transfer belt 13 is moved, the lead tilt gear 24 of the leading runner 2a is rotated, the tilt gear 25 is rotated, and the tilt belt 25 is moved. When the tilt belt 25 is moved, the tilt gear 25 of each subsequent runner 2 is rotated, and each slat 3
Is rotated.

Next, when one of the ends 17a, 17b of the clutch spring 16 comes into contact with the projection 19a of the clutch support plate 18, the rotation of the tilt pulley 14 is prevented. In the leading runner 2a, the cam 27 of the lead tilt gear 24 is connected to the protrusion 31 of the rotation control member 28.
, The rotation of the lead tilt gear 24 is blocked, and the rotation of the tilt gear 25 of the leading runner 2a is blocked. Therefore, when the rotation of the tilt pulley 14 and the tilt gear 25 of the leading runner 2a is prevented, the movement of the tilt belt 15 is stopped. As shown in the figure, all the slats 3 are turned in the direction along the hanger rail 1. Even if the tilt gear 25 of each runner 2, 2a is further rotated after each slat 3 is rotated to the direction along the hanger rail 1, each slat 3 is further rotated in the same direction by the clutch device 23. It is not moved.

It is assumed that the operation direction of the operation code 4 is a slat folding direction. At this time, when the operation cord 4 is further rotated in the same direction in a state where the rotation of the lead tilt gear 24 of the leading runner 2a and the tilt pulley 14 is prevented as described above, the movement of the transfer belt 13 is accompanied. The leading runner 2a is moved along the hanger rail 1 in the direction of arrow C shown in FIG.

Then, as shown in FIG. 9B, the subsequent runners 2 are sequentially pushed back by the first runner 2a. At this time, since the length of the tilt belt 15 between the runners 2 and 2a does not change, the tilt belt 15 between the runners 2 and 2a is in a state of being double-folded in the hanger rail 1, respectively. . Then, when all the subsequent runners 2 are pushed back by the leading runner 2a, FIG.
Each slat 3 is folded as shown in FIG.

On the other hand, when pulling out the folded slat 3, the operation code 4 is operated in the opposite direction.
Then, the transfer belt 13 is moved in the opposite direction via the main shaft 8 and the transfer drive gear 11, and the tilt pulley 14 is rotated via the clutch spring 16 as the main shaft 8 rotates.

Then, the lead tilt gear 24 of the first runner 2a is rotated, the tilt gear 25 of the first runner 2a is rotated, and the tilt belt 15 mounted on the tilt gear 25 is moved. Also, the tilt pulley 14
The tilt belt 15 mounted on the tilt pulley 14 moves with the rotation of. Therefore, the first runner 2
a and the tilt gear 25 of the last runner 2 is rotated, but the tilt belt 15 between each runner 2 between the first runner 2a and the last runner 2 is loose and folded, Tilt gear 2 of those runners 2
5 is not rotated.

As a result, the tilt gears 25 of the first runner 2a and the last runner 2 are rotated, and both runners 2a are rotated.
When the slat 3 suspended and supported by the a and 2 attempts to rotate, the slat 3 suspended and supported by the other runner 2 is not rotated. For this reason, the slats are brought into contact with each other to prevent their rotation. Therefore, in the first runner 2a and the last runner 2, the clutch device 23 operates and the slat 3 is not rotated.

From this state, the cam 27 of the lead tilt gear 24 of the leading runner 2a is
1 and the rotation of the lead tilt gear 24 is stopped, the leading runner 2a is pulled out in the direction of arrow D shown in FIG. Then, as shown in FIG. 10B, the subsequent runners 2 are sequentially pulled out at regular intervals via the tilt belt 15, and the slats 3 are sequentially drawn out as shown in FIG. 11D.

When the leading runner 2a is pulled out to the maximum, the tilt belt 15 between the runners 2 and 2a is moved.
Are all in a tensioned state, and the operation of pulling out the runners 2 and 2a is completed, and the slats 3 are suspended and supported at equal intervals as shown in FIG.

When the operation code 4 is operated in the reverse direction from this state, the transfer belt 13 is moved and the leading runner 2 is moved.
The lead tilt gear 24a is rotated. Then, the tilt gear 25 of the leading runner 2a is rotated, the tilt belt 15 is moved, and the slats 3 are rotated in the same phase, for example, as shown in FIG. Therefore, the angle of the slat 3 can be adjusted by adjusting the amount of rotation.

When the operation code 4 is further operated in the same direction, the slat 3 is folded again as described above.
As described above, in this vertical blind, the slat 3 can be pulled out and folded and the angle of the slat 3 can be adjusted by operating the operation code 4. Therefore, the operation of pulling out and folding the slat 3 and the operation of adjusting the angle can be easily performed as a series of operations.

The slat 3 is transferred by a transfer belt 13.
The tilt adjustment of the slats 3 is performed by the tilt belt 15. Therefore, even when the hanger rail 1 is curved on the way, the transfer belt 13 is moved to the hanger rail 1.
It is possible to easily cope by supporting along.

Further, since a function of a spacer for setting the interval between the runners 2 and 2a can be provided by the tilt belt 15, it is not necessary to separately provide a spacer for each of the runners 2 and 2a, and the number of parts can be reduced. be able to.

[0049]

As described above in detail, according to the present invention, the slat angle adjustment mechanism has a spacer function for setting the distance between the runners, and the slat transfer and angle adjustment can be performed by a common operation. In addition, the present invention has an excellent effect of providing a vertical blind slat drive device capable of supporting a curved hanger rail.

[Brief description of the drawings]

FIG. 1 is a front sectional view showing a vertical blind of one embodiment.

FIG. 2 is a plan view of the vertical blind of one embodiment.

FIG. 3 is a sectional view taken along line AA in FIG.

FIG. 4 is a sectional view taken along line BB in FIG.

FIG. 5 is a vertical sectional view of the operation box.

FIG. 6 is a cross-sectional view of the operation box.

FIG. 7 is a plan view showing a lead tilt gear.

FIG. 8 is a bottom view of the rotation control member.

FIG. 9 is an explanatory diagram showing operations of a transfer belt and a leading runner.

FIG. 10 is an explanatory diagram showing operations of a transfer belt and a leading runner.

FIG. 11 is an explanatory diagram showing an operation during a slat driving operation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hanger rail 2 Runner 2a Top runner 3 Slat 11 Drive gear 13 Transfer belt 15 Tilt belt 24 Lead tilt gear 25 Tilt gear

Claims (1)

(57) [Claims] 1. A plurality of runners (2, 2a) are movably supported in a hanger rail (1), and slats (3) are suspended from and supported by the runners (2, 2a), respectively. At one end of the hanger rail (1), a driving gear (11) rotatable by operating means is provided, and the driving gear (11) and the hanger rail (1) are provided.
An endless transfer belt (13) is hung between a driven gear (12) rotatably supported at the other end of the first runner (12) and a leading runner (12) positioned at the head of the plurality of runners (2, 2a). 2a), a lead tilt gear (24) meshing with one of the transfer belts (13) stretched in parallel on both sides of the leading runner (2a) is rotatably supported only within a certain angle range, The leading runner (2a) is provided with a tilt gear (25) that rotates with the rotation of the lead tilt gear (24) and rotates a slat (3) suspended and supported by the leading runner (2a). Each of the runners (2, 2a) is provided with a tilt gear (25) for rotating a slat (3) suspended and supported by the runner (2, 2a) with the rotation of the runner (2, 2a). 25) is the first runner Tilt gear (2a) (2
5) Rotate the rotation of the other runner (2) to the tilt gear (25).
And a distance between the runners (2, 2a) when the slats are pulled out.
5) A slat drive device for a vertical blind, which is connected in 5).