JPH0335033Y2 - - Google Patents

Description

[Detailed Description of the Invention] Purpose of the Invention (Field of Industrial Application) This invention relates to an angle adjustment device for adjusting the angle of the slats of a blind.

(Conventional technology) Traditionally, blinds built into double-glazed windows were
For example, an operation dial is rotatably supported on the outer surface of the frame, an angle adjustment shaft of the slat is rotatably supported within the frame, and the rotational force of the operation dial can be transmitted to the angle adjustment shaft by a wire. The angle of each slat can be adjusted by rotating the slat angle adjustment shaft via a wire.

(Problem to be solved by the invention) However, in the slat angle adjusting device as described above, each slat is rotated in proportion to the amount of rotation of the operation dial, so the angle of the slats can be accurately adjusted to fully open or fully closed. There was a problem in that it was necessary to delicately operate the operating dial for adjustment, and quick angle adjustment was not possible.

Structure of the invention (means for solving the problems) In order to solve the above problems, this invention suspends and supports a blind between frames, and the slat angle adjustment shaft of the blind can be rotated inside the frame. In a frame blind in which the angle adjustment shaft 27 can be rotated through a wire, the rotation restriction piece 11 that allows the angle adjustment shaft 27 to be rotated only within a predetermined angle corresponding to the opening and closing of the slat 5 is rotated. It is configured to be provided at one end of the adjustment shaft 27.

(Function) By the above means, the angle adjustment shaft 27 is rotated only by a predetermined angle, and the slat 5 is maintained in the fully open or fully closed state by the biasing force.

(Embodiment) An embodiment embodying this invention will be described below with reference to the drawings. As shown in FIG. In the blind 2, a ladder cord 4 is suspended from an angle adjustment shaft (described later) which is rotatably supported within an upper stile 3 as a frame of the double glass shoji 1, and a multi-stage slat 5 is attached to the ladder cord 4.
are supported respectively. The angle of each slat 5 can be adjusted by operating an operating lever 7 provided on the front surface of the lower stile 6, which also serves as a frame body, and rotating the angle adjustment shaft.

Next, the angle adjustment mechanism will be explained in detail.
As shown in FIG. 3, a pair of bearings 9a and 9b are fixed inside one end of a head box 8 housed in the upper stile 3, and a drive shaft 10 is rotatably supported by the bearings 9a and 9b. A rotation regulating piece 11 is fitted and fixed on one end of the drive shaft 10, that is, on the end side of the head box 8, and abuts against the upper edge of the head box 8 at a position shown by a solid line and a position shown by a chain line in FIG. Thus, the drive shaft 10 can be rotated within a predetermined angular range. A torsion coil spring 1 is attached to the drive shaft 10 between the bearings 9a and 9b.
One end of the torsion coil spring 12 is fixed to one of the bearings 9a with a screw 13, and the other end is fixed to the drive shaft 10 with a screw 14. The torsion coil spring 12 always biases the drive shaft 10 in one direction so that the rotation regulating piece 11 comes into contact with the upper edge of the head box 8.

One end of a wire 15 is wound around the other end of the drive shaft 10 for rotating the drive shaft 10 based on the operation of the operating lever 7. Then, the wire 15 is guided below the head box 8 via two guide pulleys 16a and 16b, and is connected to each slat 5 near the ladder cord 4 as shown in FIG.
After being penetrated by, it is guided into the lower stile 6. In addition,
Each slat 5 has a wire 15 passed through an elongated hole provided in its center in order to adjust the angle with the wire 15 passing through it. An angle adjustment shaft 27 of the slat 5 is fitted to the other end of the drive shaft 10 so as to rotate together with the drive shaft 10.
Then, as the drive shaft 10 rotates, the angle adjustment shaft 2
7 is rotated by the predetermined angle, the ladder cord 4
Each slat 5 is moved between a fully closed state and a fully open state, that is, between a vertical state and a horizontal state, by approximately 90° via a support member (not shown) and a ladder cord 4.
It is designed to be rotated frequently.

As shown in FIGS. 1 and 2, the operating lever 7 has a lever shaft 17 rotatably supported on the side surface of a support case 28 fixed within the lower stile 6. An arm 18 is fitted and fixed to the. The arm 18 is fixed so as to extend on the opposite side of the operating lever 7 about the lever shaft 17, and the other end of the wire 15 is rotatably supported by an arm pin 19 fixed at its tip.

The wire 15 passes through each slat 5 and is guided into the lower stile 6, and then passes through a movable pulley 20 and a fixed pulley 21 rotatably supported by a support case 28 to the arm 1.
8 is connected. A movable pulley 20 serving as a tensioning means for the wire 15 is rotatably supported at both ends by a support member 22, and a bolt 2 is attached to the support member 22.
3 is inserted through the bolt 23 so that its head cannot be removed, and the bolt 23 is inserted through the bottom surface of the support case 28 so as to be movable up and down. A coil spring 25 is disposed between a nut 24 screwed onto the lower end of the bolt 23 and the bottom surface of the support case 28, and always urges the bolt 23 downward using the bottom surface of the support case 28 as a fulcrum. It's getting old. Therefore, the movable pulley 20 is urged downward by the urging force of the coil spring 25, so that the wire 15 is always kept under tension. Note that the nut 26 screwed onto the bolt 23 on the bottom surface of the support case 28 is used to adjust the position of the movable pulley 20 in order to maintain the wire 15 in an optimum tension state at all times.

Next, the operation of the slat angle adjusting mechanism for the blind 2 constructed as described above will be explained.

Now, as shown in FIG. 1, when the arm 18 is pulled toward the fixed pulley 21 by the urging force of the torsion coil spring 12 and the coil spring 25, and the operating lever 7 is located in the horizontal state shown in the figure,
The rotation regulating piece 11 at one end of the drive shaft 10 comes into contact with one upper edge of the head box 8 at the position shown by the solid line in FIG. be. From this state, twist the operating lever 7 to release the coil spring 1.
2 in the direction of the arrow in the figure to bring the rotation regulating piece 11 into contact with the other upper edge of the head box 8 as shown by the chain line in FIG. When rotated to the state shown in Figure 2,
In this state, the arm pin 19 is located above the center C of the lever shaft 17, so the operating lever 7 is rotated between the torsion coil spring 12 and the coil spring 2.
It is held in this state by the biasing force 5 without being rotated in the direction of the arrow in the figure. Further, in this state, each slat 5 is held horizontally, and the blind 2 is fully opened.

On the other hand, from this state, rotate the operating lever 7 slightly in the direction of the arrow in FIG.
7, the operating lever 7 is automatically rotated to the state shown in FIG. Again, as shown by the solid line in FIG. 4, the head box 8 comes into contact with one upper edge, and in this state, each slat 5 is rotated in the vertical direction and the blind 2 is closed.

As described above, this slat angle adjustment mechanism includes the torsion coil spring 12 and the coil spring 2.
The angle of each slat 5 can be easily adjusted to either a fully open state or a fully closed state by using the urging force of the slats 5. The opening/closing limit of each slat 5 is reliably set to either the horizontal or vertical position by the rotation regulating piece 11 even if the operating lever 7 is rotated excessively. When adjusting the angle to the closed state, there is no need to delicately operate the operating lever 7, and therefore the angle of each slat 5 can be quickly and reliably adjusted to the fully open or fully closed state.

Effects of the device As detailed above, this device has two angle adjustment shafts.
The maximum opening/closing angle of the slat 5 is determined by the rotation regulating piece 11 attached to the slat 7, and the slat 5 is kept fully open or fully closed by the urging force of the urging means 12 and the tensioning means 20. It exhibits an excellent effect that allows the opening and closing operations to be performed easily and quickly.

[Brief explanation of the drawing]

Fig. 1 is a front view showing the operating lever section of a slat angle adjustment device embodying this invention, Fig. 2 is a front view showing the operating lever in a rotated state, and Fig. 3 is an angle adjustment device inside the head box. FIG. 4 is a front view showing the shaft drive section, FIG. 4 is a side view of the headbox showing the rotation regulating piece, and FIG. 5 is a perspective view of a double glass shoji that embodies this invention. slat 5, rotation regulating piece 11, biasing means 12,
Wire 15, tension means 20, angle adjustment shaft 27.

Claims (1)

[Scope of utility model registration request] In a framed blind in which a blind is suspended between frames, a slat angle adjustment shaft of the blind is rotatably supported within the frame, and the angle adjustment shaft can be rotated via a wire, the angle adjustment shaft is 27 can be rotated only within a predetermined angle corresponding to the opening/closing of the slat 5.
A biasing means 12 is provided at one end of the angle adjusting shaft 27 and always biases the angle adjusting shaft 27 in the winding direction of the wire 15. A slat angle adjusting device for a blind, characterized in that it is hung on a tensioning means 20 for adjusting the slat angle of a blind.