JPH0516397Y2 - - Google Patents

Description

[Detailed Description of the Invention] Purpose of the Invention (Field of Industrial Application) This invention relates to a slat drive device for raising and lowering the slats of a blind and adjusting the angle thereof.

(Prior Art) Conventionally, as a type of slat drive device for blinds, for example, as described in Japanese Patent Publication No. 52-38664, there is a lifting cord that passes through each slat and suspends and supports a bottom rail at one end. A blind has been put into practical use in which the other end of the slat hangs down from one side of the head box, and the slat can be raised and lowered and the angle can be adjusted by operating the raising and lowering cord. In other words, in such a drive device, the slats can be raised or lowered by operating multiple lifting cords hanging from the head box at the same time, and by selecting and operating one of the multiple lifting cords, the angle can be adjusted without raising or lowering the slats. It has a built-in adjustable force transmission device. A stopper is provided at the elevating cord outlet of the headbox to prevent the elevating cord from being pulled into the headbox by the weight of the slat when the elevating cord is not operated, thereby preventing the weight of the slat from falling. This stopper allows the lifting cord to be freely pulled out downward, and when the operator lets go of the lifting cord, it automatically operates to prevent the lifting cord from being pulled into the head box and pull the lifting cord diagonally. When pulled to the side, the actuation is released and the lifting cord can be drawn into the headbox under the weight of the slat.

(Problem to be solved by the invention) However, in the above-mentioned slat drive device, when adjusting the angle of the slat, the lifting cords hanging from the head box must be pulled diagonally to the side to release the stopper. In this state, it is necessary to adjust the angle of the slat by operating only a predetermined lifting cord, which poses a problem in that the operation becomes complicated.

Structure of the invention (means for solving the problems) In order to solve the above problems, this invention suspends and supports multiple slats from the head box via ladder cords, and also supports multiple bottom rails at the bottom of the slats. The slats are suspended and supported by a lifting cord, and one end of the lifting cord is suspended from one side of the head box, and the slats are raised and lowered by operating the cord.
In a blind in which the angle adjustment shaft of the slat provided in the head box is rotationally driven by the operation of the lifting cord, the lifting cords 5a, 5b, 5c are installed in the head box 2 by the weight of the slat 4.
A release code 1 for releasing the operation of the stopper device 19 is provided.
0 hangs from the head box 2, and when moving the lifting cords 5a, 5b, 5c all at once in the head box 2, the operating force is not transmitted to the angle adjustment shaft 11, and the lifting cords 5a, 5b, 5
Operation force transmission devices 15, 16, 18a, 18b that rotate the angle adjustment shaft 11 without raising or lowering the slat 4 when selecting and operating one of c.
The lifting cords 5a, 5b, and 5c are configured to hang down from the stopper device 19 to the outside of the head box 2 via the operating force transmission device.

(Function) By the above means, the lifting cords 5a, 5b, 5c
If the slats 4 are pulled all at once, the slats 4 are raised without being rotated, and when the release code 10 is operated, the slats 4 are lowered without being rotated, and one of the lifting codes 5a, 5b, and 5c is selected. If the slat 4 is operated by the user, the slat 4 can be rotated without being raised or lowered.

(Embodiment) Hereinafter, one embodiment of this invention will be described with reference to the drawings. As shown in FIG. A slat 4 is suspended and supported. Ladder cord 3 on both left and right sides and in the center
In the vicinity, each slat 4 has a lifting cord 5a,
5b and 5c are penetrated, and a bottom rail 6 is suspended and supported at one end thereof. The other ends of the lifting cords 5a, 5b, 5c pass through the head box 2, hang down from an opening 7 on one side of the head box 2, pass through an operating member 8, and are connected to one end of the bottom rail 6. Operating knobs 9a, 9b are attached to the lifting cords 5a, 5c passing through the left and right sides of the slat 4 below the operating member 8.

In addition to the lift cords 5a, 5b, and 5c, a release cord 10 is suspended from the opening 7. The upper end of the release cord 10 is connected to a stopper, which will be described later, provided in the head box 2 to prevent the slat 4 and bottom rail 6 from falling under their own weight, and the lower end is fixed to the operating member 8. Therefore,
The operating member 8 is suspended and supported by the release cord 10, and when the operating member 8 is pulled downward, only the release cord 10 is pulled downward.

As shown in FIG. 1, a hexagonal bar-shaped angle adjustment shaft 11 is rotatably supported by a support member 12 in the head box 2, and a hanging cylinder 13 fitted onto the angle adjustment shaft 11 within the support member 12. The ladder cord 3 is suspended and supported from. Then, such a support member 12 is disposed within the head box 2.
The angle of the slat 4 is adjusted via each ladder cord 3 when the angle adjustment shaft 11 is rotated by suspending and supporting a ladder cord 3 at each position.

A spiral groove 1 is provided on the outer peripheral surface of one end of the angle adjustment shaft 11.
One end of a conversion shaft 15 having a number 4 carved thereon is connected and fixed, and the other end of the conversion shaft 15 is rotatably supported at the end of the head box 2. Also, conversion axis 1
5 is screwed onto a slide block 16, which is formed into a substantially rectangular parallelepiped shape and is movable within the head box 2 only in the left and right directions in FIG. And slide block 16
When the conversion axis 15 moves, the conversion axis 15 is rotated, and the conversion axis 15
As the angle adjustment shaft 11 rotates, the angle adjustment shaft 11 is rotated.

Slide block 16 rotatably supports slide pulleys 17a and 17b on both sides of the screwing position of conversion shaft 15, and fixed pulleys 18a and 18b are rotatably supported on both left and right sides of slide block 16. That is, the slide pulley 17a,
Since the slide block 17b moves together with the slide block 16, it acts as a movable pulley for the fixed pulleys 18a and 18b.

The three lifting cords 5a, 5b, 5c are inserted through a stopper device 19 within the head box 2. The stopper device 19 will be explained according to FIGS. 4 to 6. A cylinder 21 whose diameter gradually decreases toward the tip is formed in a case 20 of the stopper device 19, and the inner circumferential surface of the cylinder 21 is As shown in FIG. 6, guide grooves 22 extending in the longitudinal direction of the cylinder 21 are formed at equal intervals.
Insertion holes 23 and 24 are provided on both sides of the case 20 on the extension of each guide groove 22, respectively. The lifting cords 5a and 5 are inserted into the guide grooves 22 by using the insertion holes 23 and 24, respectively.
b and 5c are inserted.

A locking ball 25 is disposed within the cylinder 21,
The tip of a drive rod 26 is fixed to the lock ball 25. The base end of the drive rod 26 projects outside the case 20 and is connected to the release cord 10. A coil spring 27 is disposed within the case 20 between the lock ball 25 and the inner surface of the case 20, and urges the lock ball 25 toward the tip of the cylinder 21. Therefore, as shown in FIG. 4, each lifting cord 5a, 5b, 5c is always held between the lock ball 25 and the guide groove 22 and is prevented from moving in the direction of arrow A. 5b, 5c from the head box 2, that is, when the lifting cords 5a, 5b, 5c are moved in the direction of arrow B, the locking ball 25 resists the biasing force of the coil spring 27 as the lifting cords 5a, 5b, 5c move in the direction of arrow B. Since the lift cords 5a, 5b, 5c
can be freely withdrawn. In addition, as shown in FIG.
When moved against the urging force of , the lifting cord 5
The sandwiched state of a, 5b, and 5c is released and they can move freely in the direction of arrow A.

Three lifting cords 5 passing through stopper device 19
Among the lift cords 5a, 5b, and 5c, the lifting cord 5b passes below the slide block 16 and is suspended downward from the guide roller 7a of the opening 7, as shown in FIG. In addition, as shown in Fig. 8, the lifting cord 5
After a passes through the stopper device 19, the slide pulley 1
7a and a fixed pulley 18a, and is suspended downward from the guide roller 7a. Further, as shown in FIG. 9, the lifting cord 5c passes through a stopper device 19, and then passes through a solid pulley 18b and a slide pulley 17b.
The guide roller 7a is hung downward from the guide roller 7a. Furthermore, as shown in FIG. 10, the release cord 10 passes below the slide block 16 and hangs down from the guide roller 7a.

Therefore, by handling the lifting cord as described above, when the lifting cord 5a is pulled downward by holding the operating knob 9a, the slide block 16 is pulled toward the fixed pulley 18a as shown in FIG. Therefore, the conversion shaft 15 is rotated, and along with the rotation, the angle adjustment shaft 11 is rotated, and each slat 4 is rotated in one direction. Furthermore, when the user holds the operating knob 9b and pulls the lifting cord 5c downward, the slide block 16 is pulled toward the fixed pulley 18b, so that each slat 4 is rotated in the opposite direction. During such operations, the stopper device 19
Since the more advanced lifting cords 5a, 5b, and 5c are not moved, the bottom rail 6 and each slat 4 are not moved up or down.

On the other hand, when the three lifting cords 5a, 5b, 5c below the operating member 8 are pulled downward together, the slide block 16 is pulled with equal force to both the left and right sides by the lifting cords 5a, 5C. It never moves either.

Next, the operation of the slat drive device for the blind 1 constructed as described above will be explained.

Now, when pulling up the slats 4 of this blind 1, the lifting cord 5 below the operating member 8
When a, 5b, and 5c are collectively pulled downward, the locking ball 25 is moved in the direction of arrow B in FIG. moved in the same direction. Then, the bottom rail 6 is pulled up,
The bottom rail 6 sequentially pulls up the slats 4 starting from the lower tier. At this time, slide block 1
Since an equal force is applied to both the left and right sides of the lift cord 6 by the lifting cords 5a and 5c, the lift cord 6 does not move to the left or right. Therefore, the slat 4 is lowered without being rotated. After pulling up the slat 4 to the desired position, let go of the lifting cords 5a, 5b, and 5c, and the coil spring 2
Each lifting cord 5a, 5b, 5c is moved by the biasing force of 7.
is sandwiched between the lock ball 25 and the guide groove 22 to prevent its movement, so that the slat 4 is suspended and supported at a desired position.

On the other hand, when lowering the slat 4, when the operating member 8 is pulled downward, the lifting cords 5a, 5b, 5
Only the release cord 10 is pulled without c being pulled, and as shown in FIG. 5, the drive rod 26 is pulled and the locking ball 25 is retracted. Then, the lift code 5
a, 5b, and 5c are moved in the direction of arrow A by the weight of the bottom rail 6 and the slats 4 stacked on the bottom rail 6, and the bottom rail 6 and the slats 4 are lowered. At this time, equal force is applied to the slide block 16 on both the left and right sides by the lifting cords 5a and 5c, so that the slide block 16 does not move to either the left or the right. Therefore, the slat 4 is lowered without being rotated. When the operating member 8 is released after the slat 4 has been lowered to the desired position, the respective lifting cords 5a, 5b, 5c are sandwiched between the lock ball 25 and the guide groove 22 in the same manner as described above, and the slat 4 is lowered. Suspended and supported at desired position.

Further, in order to adjust the angle of the slat 4, for example, when holding the operation knob 9a and pulling the lifting cord 5a downward, the slide block 16 is moved and the conversion shaft 15 is rotated, as shown in FIG. As the shaft 15 rotates, the angle adjustment shaft 11 is rotated and the slat 4 is rotated. Further, by holding the operating knob 9b and pulling the lifting cord 5c downward, the slat 4 is rotated in the opposite direction. and,
During such angle adjustment operations, the stopper device 19
Since the lifting cords 5a, 5b, and 5c located further ahead are not moved, the slat 4 is not lifted or lowered.

As described above, in this blind slat drive device, if the lifting cords 5a, 5b, and 5c are pulled down together, the slat 4 can be moved without changing the angle of the slat 4 due to the action of the slide block 16.
By pulling the release cord 10, the slat 4 can be lowered without changing the angle of the slat 4, and by releasing each cord, the slat 4 is automatically suspended and supported at a desired position. Furthermore, by pulling either of the lifting cords 5a, 5c downward, the angle of the slat 4 can be adjusted by the action of the slide block 16 without raising or lowering it.

Therefore, by operating each cord, the slats 4 can be raised and lowered and the angle adjusted very easily, and since the raising and lowering operation and the angle adjustment operation can be performed independently, the slats 4 can be moved to the desired position. It can be raised and lowered to a precise position and the angle can be adjusted.

Effects of the invention As detailed above, this invention suspends and supports multiple levels of slats from the head box via ladder cords, and also suspends and supports the bottom rail at the lowest level of the slats using multiple lifting cords. A blind in which one end of a cord is suspended from one side of a head box and the slats are raised and lowered by operating the cord, and the angle adjustment shaft of the slat provided in the head box is rotationally driven by the operation of the lifting cord, without rotating the slats 4. The slats 4 can be raised and lowered, and the angle can be adjusted by rotating the slats 4 without raising or lowering them, and the slats 4 can be easily adjusted in angle without having to release the stopper device 19. This provides an excellent effect. do.

[Brief explanation of drawings]

Fig. 1 is a front view of a slat drive device that embodies this invention, Fig. 2 is a plan view of the same, Fig. 3 is a front view of a blind related to this invention, and Figs. 4 and 5 show the operation of the stopper device. Sectional view shown, No. 6
The figure is a cross-sectional view showing the lifting cord inside the cylinder.
Figures 1 to 11 are conceptual diagrams showing how the lifting cord is routed to the slat drive device. Head box...2, Slat...4, Lifting code...5a, 5b, 5c, Release code...1
0, Angle adjustment axis...11, Conversion axis...15, Slide block...16, Fixed pulley...18a, 1
8b, stopper device...19.

Claims (1)

[Scope of utility model registration request] Multiple levels of slats are suspended from the headbox via ladder cords, and the bottom rail at the lowest level of the slats is suspended and supported by multiple lifting cords, and one end of the lifting cord is suspended from one side of the headbox for operation. In this blind, the slats are raised and lowered by the slats, and the angle adjustment shaft of the slats provided in the headbox is rotationally driven by the operation of the lifting cord.
A stopper device 19 is provided to prevent movement of 5c,
A release cord 10 for canceling the operation of the stopper device 19 hangs down from the head box 2, and lifting cords 5a, 5b, 5 are also placed in the head box 2.
When moving the cables 5a and 5c all at once, the operating force is not transmitted to the angle adjustment shaft 11, and the lifting cords 5a, 5
When selecting and operating either of b and 5c, the operating force transmission device 15, 16, 18a, which rotates the angle adjustment shaft 11 without raising or lowering the slat 4.
18b, and each lifting cord 5a, 5b, 5c hangs down from the stopper device 19 to the outside of the head box 2 via the operating force transmission device.