JP2564402B2 - Blind slat drive - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a slat drive device for raising and lowering and adjusting an angle of a slat of a blind.

[Prior Art] Conventionally, as an example of a blind slat drive device,
For example, as described in Japanese Patent Publication No. 52-38664, while penetrating each slat, the other end of the lifting cord that suspends and supports the bottom rail at one end is hung from one side of the head box, and the lifting cord is A slat that can be raised and lowered and its angle adjusted by operation has been put into practical use. That is, in such a driving device, the slat is lifted when a plurality of lifting cords hung from the head box are collectively operated, and if the plurality of lifting cords are selected and operated, the slats are not lifted. It has a built-in operating force transmission device that can adjust the angle. A stopper device is provided at the lifting cord outlet of the head box to prevent the lifting cord from being pulled into the head box by the weight of the slats when the lifting cord is not operated, thereby preventing the slats from falling.
This stopper device allows the lifting cord to be pulled out freely, and it automatically operates when the operator releases the lifting cord to prevent the lifting cord from being pulled into the head box. When it is pulled obliquely to the side, its operation is released and the lifting cord can be pulled into the head box based on the weight of the slats.

However, in the slat drive device as described above, when adjusting the angle of the slats, the lifting cords hanging from the head box are pulled together in a diagonal direction to release the operation of the stopper, and in that state, only the predetermined lifting cords are released. Since it is necessary to adjust the angle of the slat by operating, the operation becomes complicated.

Then, in order to eliminate such a defect, the actual Kaisho 1
In the slat drive device described in the -90999 publication, the lifting cord is hung from the stopper device to the outside of the headbox via the operating force transmission device, and one of the lifting cords is pulled without releasing the stopper device to angle the slats. The slats can be pulled up by pulling the lifting cords together while being adjustable, and the slats can be lowered using the dead weight of the slats and the bottom rail by pulling the release cord for canceling the operation of the stopper device. I am trying.

[Problems to be Solved by the Invention] However, in the slat drive device as described above, a release code for releasing the operation of the stopper device is required in addition to the lifting code, which complicates the structure and lowers the slat. When doing so, it is necessary to pull the lifting cord into the head box while pulling the release cord, and there is a problem that the complexity of the operation is not sufficiently eliminated.

An object of the present invention is to provide a slat driving device that can easily perform the lifting and lowering of the slats and the angle adjusting operation only by operating the lifting cord.

[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention hangs and supports a large number of stages of slats from a head box via ladder cords, and uses a plurality of lifting cords penetrating each slat. The bottom rail at the bottom of the slat is suspended and supported, and the other end of the lifting cord is hung from one side of the headbox, and a stopper device is installed in the headbox to prevent the lifting cord from moving due to the weight of the slat and bottom rail. Similarly, when moving the lifting cords together in the head box, the operating force should not be transmitted to the angle adjustment shaft of the slats, and if one of the lifting cords is selected and operated, the slats should be raised and lowered. Instead, an operating force transmission device that rotates the angle adjustment shaft is provided, and each lifting cord goes out of the head box through the operating force transmission device from the stopper device. In the suspended slat drive device, the stopper device has a structure in which a lifting cord is sandwiched between a fixed gear and a movable gear that is arranged so as to be able to come into contact with and separate from the fixed gear, and the movable gear has a base end of an ink mechanism. Is provided with an urging means for urging the movable gear toward the fixed gear, and a lifting cord that hangs outside the head box is attached to the tip of the link mechanism, and the lifting cords are collectively pulled downward. As a result, the movable gear is separated from the fixed gear via the link mechanism.

[Operation] By the above means, when the lifting cords are collectively pulled downward, the drive gear is separated from the fixed gear and the operation of the stopper device is released, so that the slat can be raised and lowered, and one of the lifting cords is lowered. When pulled, the operation of the stopper device is not released, and only the operating force transmission device is operated to adjust the angle of the slat.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 4, the blind 1 has a slat 4 of a large number of stages suspended from the head box 2 via two ladder cords 3 so as to be supported. Elevating cords 5a and 5b are passed through each slat 4 near the ladder cord 3, and a bottom rail 6 is suspended and supported at one end thereof. The other end of the lifting cords 5a, 5b is the head box 2
It is hung down from the take-out port 7 on one side of the head box 2 through the inside and connected to one end of the bottom rail 6.

As shown in FIG. 2, a hexagonal rod-shaped angle adjusting shaft 8 is rotatably supported by a supporting member 9 in the head box 2,
A suspension cylinder 10 fitted to the angle adjusting shaft 8 in the support member 9.
The ladder cord 3 is suspended and supported. The support members 9 are provided at two positions on the left and right sides within the head box 2, and when the ladder cords 3 are respectively suspended and supported at the positions and the angle adjusting shaft 8 is rotated, the slats 4 are slid through the respective ladder cords 3. The angle is adjusted.

A conversion shaft 12 having six spiral grooves 11 engraved on the outer peripheral surface is fitted to one end of the angle adjusting shaft 8, and the conversion shaft 12 is screwed so as to penetrate the upper part of the slide block 13. The slide block 13 is a head box 2 as shown in FIG.
At the tip of the guide piece 14 protruding toward the side wall, the guide groove 15
Is formed, and the guide groove 15 is engaged with the ridge 16 provided on the inner wall of the head box 2. Therefore, the slide block 13 can be moved only in the longitudinal direction of the head box 2, that is, in the left-right direction in FIG. 2, and the conversion shaft 12 is rotated by the movement, and the angle adjustment shaft 8 is rotated by the rotation of the conversion shaft 12. It is designed to be rotated.

Two slide pulleys 17a, 17b are supported on the slide block 13 below the position where the conversion shaft 12 penetrates so as to be rotatable in the horizontal direction. The slide block 13 and the conversion shaft 12 constitute an operating force transmission device. Also,
A pair of fixed pulleys 18a, 18b are supported at the ends of the head box 2 so as to be vertically rotatable at positions spaced apart from each other in the front-rear direction.

In FIG. 2, a stopper device 19 is provided on the left side of the slide block 13. A pair of fixed pulleys 20a, 20b are provided on the side of the stopper device 19. And, for the fixed pulleys 18a, 18b, 20a, 20b, the slide block 1
The slide pulleys 17a and 17b that move together with 3 act as moving pulleys.

As shown in FIG. 1, in the stopper device 19, a fixed gear 22 is rotatably supported by a rectangular parallelepiped case 21, and a movable gear 23 is arranged above the fixed gear 22. That is, a pair of rotating arms 24 are rotatably supported by shafts 25 on both sides of the fixed gear 22, and a support shaft 23a of the movable gear 23 moves in a long hole 26 formed in the upper part of the rotating arm 24. Supported as possible. In addition, a slanted long hole 27 is formed on the side surface of the case 21, and a rack is formed between both side surfaces of the case 21 above and below the long hole 27 so that a downward slanted surface along the long hole is provided with unevenness.
28 are provided. Therefore, the movable gear 23 is a rotating arm.
When 24 is rotated, it moves along the long hole 27 of the case 21 while meshing with the rack 28, and slightly moves up and down along the long hole 26 of the rotating arm 24. Then, as it descends along the rack 28, it approaches the fixed gear 22.

A forked end of a transmission arm 29 is rotatably connected to the lower end of the rotary arm 24, and the base end of the transmission arm 29 is supported so as to be movable left and right inside the take-out port 7 of the head box 2. A guide gear 31 is connected to the sliding block 30, and a guide gear 31 is rotatably supported on the sliding block 30 in an oblique direction.
The sliding block 30 is connected to the head box 2 by a coil spring 32, and is biased in the direction of arrow A in FIG. 2 by its biasing force. Therefore, the rotation arm 24 has a transmission arm.
The rotational force in the direction of arrow B is applied via 29.

Next, the paths of the lifting cords 5a, 5b with respect to the stopper device 19 and the operation force transmitting device configured as described above will be described. The lifting cords 5a, 5b penetrating each slat 4 and introduced into the head box 2 are described. Is inserted between the movable gear 23 and the fixed gear 22 of the stopper device 19 via the guide roller 33. Then, one elevating cord 5a (shown by a solid line in each figure) is then hooked on one slide pulley 17a, then on the fixed pulley 20a, and then through the guide pulley 31 of the sliding block 30 and the take-out port. It is hung from the head boss 2 from 7.

The other lifting cord 5b (indicated by diagonal lines in each figure) passes between the fixed and movable gears 22 and 23, and then is hooked on the other slide pulley 17b via the fixed pulley 18a, and then the fixed pulley 18b.
After being hung on the fixed pulley 20b, the fixed pulley 20b is hung on the fixed pulley 20b.

Next, the operation of the blind slat driving device configured as described above will be described.

Now, in the state where the slats 4 of the blind 1 are held in the horizontal direction as described above, the slide block 13 is located substantially at the center of the conversion shaft 12 as shown in FIG.
When not operating 5a, 5b, the lifting cords 5a, 5b are placed between the movable gear 23 and the fixed gear 22 by the urging force of the coil spring 32.
The gears 22 and 2 due to the weight of the slat 4 and the bottom rail 6 acting on the lifting cords 5a and 5b.
When the lifting cords 5a, 5b between the three are trying to move to the left in FIG. 7, the movable gear 23 is pressed more strongly toward the fixed gear 22, so that the lifting cords 5a, 5b are prevented from moving and the slats 4 The self-weight drop of is prevented.

In this state, the lifting cords 5a, 5 hanging from the outlet 7
If only one of the lifting cords 5a of b is pulled downward,
As shown in the figure, since the slide block 13 is moved to the left without moving the slide block 30, the angle adjusting shaft 8 is rotated via the conversion shaft 12 and the slat 4 is moved to one side via the ladder cord 3. Is tilted to.

If only the lifting cord 5b is pulled downward, the slide block 30 is moved to the right without moving the slide block 30 as shown in FIG. 9, so that the slat 4 is tilted to the other side.

On the other hand, when the two elevating cords 5a and 5b are collectively pulled downward, the slide block 13 is pulled in both directions and is not moved. Then, as shown in FIG. 10, the guide gear
The sliding block 30 is moved by the force acting on 31 and accordingly the rotating arm 24 is rotated so that the movable gear 23 is separated from the fixed gear 22 and the lifting cords 5a, 5b are provided between the two gears 22, 23.
Moves. As a result, the slat 4 is pulled up without being rotated.

Also, when lowering the slat 4, a lifting cord 5
Pull a and 5b toward the center of the blind to move the sliding block 30 to the 10th position.
By holding the movable gear 23 at a position separated from the fixed gear 22 by holding it in the state shown in the figure, in this state, the lifting cords 5a, 5b are moved from the outlet 7 to the head based on the weight of the slats 4 and the bottom rail 6. If you pull it into Box 2,
The slat 4 is lowered. And if you let go of the lifting cords 5a, 5b with the slats 4 lowered to the desired position,
The sliding block 30 returns to its original position by the urging force of the coil spring 32, and the slat 4 is held at the desired position in the state shown in FIG.

As described above, this slat drive device has a lifting cord.
By operating 5a and 5b, the slats 4 can be moved up and down and their angles can be adjusted. That is, if only one of the raising and lowering cords 5a and 5b is pulled downward, the angle can be adjusted without raising and lowering the slat 4, and if the raising and lowering cords 5a and 5b are collectively operated, the slats 4 can be raised and lowered without rotating. be able to. Then pull the lifting cords 5a and 5b together to make the stopper device 1
Since the operation of 9 can be automatically released, the lifting and lowering operation of the slat 4 becomes easy and the stopper device 19
Since there is no need to provide a dedicated release code for releasing the operation of, the structure becomes simple.

[Effects of the Invention] As described in detail above, a slat of a large number of stages is suspended from the head box via a ladder cord, and a bottom rail of the slat is suspended and supported by a plurality of lifting cords penetrating each slat. Then, the other end of the lifting cord is hung from one side of the headbox, and a stopper device is installed in the headbox to prevent the lifting cord from moving due to the weight of the slats and the bottom rail. When moving collectively, the operating force is not transmitted to the angle adjustment shaft of the slat, and when operating by selecting one of the lifting cords, the operating force is transmitted without rotating the slat to rotate the angle adjustment shaft. Equipment
In each slat drive device in which each lifting cord is hung from the operating device through the operating force transmission device to the outside of the head box, it is possible to easily perform the lifting and angle adjusting operation of the slats only by operating the lifting cord. Demonstrate.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of a slat drive device embodying the present invention, FIG. 2 is a front view thereof, and FIG. 3 is a plan view thereof.
FIG. 4 is a front view of the blind, FIG. 5 is a side view of the slide block, FIG. 6 is a perspective view showing the tip of the link mechanism, and FIGS. 7 to 10 are explanatory views showing the operation of the slat drive device. Is. Head box 2, lifting cords 5a, 5b, stopper device 1
9, fixed gear 22, movable gear 23, rotating arm (link mechanism) 24, transmission arm (link mechanism) 29, coil spring (biasing means) 32.

Claims (1)

(57) [Claims] 1. A slat of a large number of steps is suspended from a headbox via a ladder cord, and a plurality of lifting cords penetrating each slat suspends and supports a bottom rail of the bottom stage of the slat. When the other end is hung from one side of the head box, a stopper device is installed in the head box to prevent the lifting cords from moving due to the weight of the slats and the bottom rail. Does not transmit the operation force to the angle adjustment shaft of the slat, and when selecting and operating one of the lifting cords, it is equipped with an operation force transmission device that rotates the angle adjustment shaft without raising and lowering the slat. The cord is a slat drive device that is hung from the stopper device to the outside of the head box through the operating force transmission device. 19) is a configuration in which a lifting gear (5a, 5b) is sandwiched between a fixed gear (22) and a movable gear (23) arranged so as to be able to come into contact with and separate from the fixed gear (22). A biasing means (32) for connecting the base ends of the ink mechanisms (24, 29) and biasing the movable gear toward the fixed gear.
The lifting gears (5a, 5b) hanging outside the headbox (2) are mounted on the tip of the link mechanism, and the lifting gears are collectively pulled down to fix the movable gear through the link mechanism. A blind slat drive device characterized by being separated from a gear.