JPH06100045B2 - Headbox lift blinds - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a headbox elevation type blind for raising and lowering a slat by raising and lowering a headbox.

(Prior Art) Conventionally, for example, as one type of blinds incorporated in a double-glazed sash, a blind has been put into practical use in which a slat is moved up and down by moving up and down a head box. In such a blind, a slat elevating device and a slat angle adjusting device are provided in the vertical frame of the sash, and by operating them, the slat is elevated to a desired position and the angle is adjusted. But,
Thus, in order for the slat elevating device and the angle adjusting device to be separately housed in the vertical frame, the vertical frame inevitably becomes large, which is contrary to the recent thinning of the sash.

Therefore, the slat lifting device has a slat angle adjustment function to rotate the slat when the head box starts to move up and down.
After the slat is rotated to the vertical direction, there is also proposed a structure in which the angle adjustment mechanism is idled and only the head box is moved up and down to simplify the structure.

(Problems to be solved by the invention) However, in the slat lifting device as described above, when the head box is lifted to a desired position and then the angle of the slat is adjusted, the head box is also lifted slightly. There was a problem that it could not be held accurately.

Configuration of the Invention (Means for Solving the Problems) In order to solve the above problems, the present invention raises and lowers a slat by raising and lowering a headbox by an elevation device provided in a vertical frame of a sash. In the mold blind, the guide rollers 7 and 8 are rotatably supported at both inner ends of the head box 4, and the lifting cords 18 and 8 are positioned so that the guide rollers 7 and 8 are located in a closed loop of the endless lifting cord 18. Is movably inserted into the head box 4 and hung on the guide rollers 7 and 8, and the lifting cords 18 are attached from both ends of the head box to both vertical frames of the sash.
It is guided to the inside of one vertical frame 2 through the upper part of 2, 3 and is hung on the operating shafts 14 and 17, and the operating shafts 14 and 17 are supported to the vertical frame 2 so that they can be moved up and down and rotated. A slide block 19 is movably supported on the slide block, and the elevating cord 18 is attached to the slide block, and a conversion shaft 21 that converts the reciprocating movement of the slide block into a forward and reverse rotation motion and outputs the engagement is engaged. The angle adjustment shaft 23 of the slat 6 is connected to the conversion shaft 21.

(Operation) When the operation shafts 14 and 17 are moved up and down by the above-described means, the head box 4 is moved up and down through the lift cord 18, and thus the slat 6 is moved up and down without adjusting the angle.
When 14, 17 are rotated, the angle adjusting shaft 23 is rotated and the slat 6 is adjusted in angle without moving the head box 4 up and down. Further, since the elevating cord 18 is movably inserted into the head box 4, and the elevating cord 18 is hooked on the guide rollers 7 and 8 provided at both inner ends of the head box 4, the configuration inside the head box 4 is reduced. There is no complication.

(Embodiment) An embodiment embodying the present invention will be described below with reference to the drawings. In a double glass sash 1 shown in FIG. 2, a head box 4 is built in such a manner that it can be moved up and down between the vertical frames 2 and 3. A large number of slats 6 are suspended and supported from the head box 4 via ladder cords 5. When the head box 4 is lowered, the lower slat 6 is sequentially stacked and folded under the sash 1, and when the head box 4 is pulled up, the upper slat 6 is sequentially pulled up.

First and second guide rollers 7, 8 are rotatably supported at both ends of the head box 4, respectively, and third and fourth guide rollers 9, 10 are vertically provided above the respective guide rollers 7, 8. It is rotatably supported by the frames 2 and 3, and the fifth and sixth guide rollers 11 and 12 are rotatably supported on the upper part of the one vertical frame 2, respectively.

A tilt lever 13 is provided at a central portion in the vertical direction of one of the vertical frames 2, and a tilt shaft 14 as an operation shaft rotatably supported in the vertical frame 2 is rotated by operating the tilt lever 13. Has become. A long hole-shaped operation hole 15 is formed from below the tilt lever 13 to the lower end of the vertical frame 2, and an elevating lever 16 is supported along the operation hole 15 so that it can be vertically moved up and down. An elevating shaft 17 as an operation shaft is provided in the section. When the elevating lever 16 is operated, the elevating shaft 17 is moved up and down within a stroke range of about 1/2 of the height of the vertical frame 2.

An endless elevating cord 18 is hung on each of the guide rollers 7, 8, 9, 10, 11, 12 and the tilt shaft 14 and the elevating shaft 17. That is, the lifting cord 18 inserted through the head box 4
Goes through the first and second guide rollers 7 and 8 respectively
Guided upward in the inside of 2,3, the third and fourth guide rollers 9,1
It is guided in the direction of one of the vertical frames 2 via 0, and is guided downward in the vertical frame 2 by the fifth and sixth guide rollers 11 and 12, and the lifting shaft 17
It is mounted on the tilt shaft 14 and guided upward. Therefore, when the elevating shaft 17 is moved up and down by operating the elevating lever 16, the elevating shaft 17 and the fifth and sixth guide rollers 1
Since the elevating cords 18 stretched in parallel between 1 and 12 are moved in the same direction and by the same distance, the head box 4 is always raised and lowered while being held horizontally. . The lifting lever 16 is provided with a self-weight drop prevention device (not shown) that is pressed against the vertical frame 2 by the urging force of a spring to prevent the head box 4 from falling due to its own weight.

A slide block 19 is movably supported in the longitudinal center of the head box 4 so as to be movable in the longitudinal direction of the head box 4. The slide block 19 has a continuous spiral groove 20 engraved therein. A shaft 21 is screwed in, and both ends of the conversion shaft 21 are supported by a support member 22 fixed to the head box 4.
It is rotatably supported by. Then, when the slide block 19 is moved inside the head box 4, the conversion shaft 21 is rotated.

An elevating cord 18 inserted into the head box 4 is attached to the slide block 19. When the tilt lever 13 is rotated, the elevating cord 18 is moved along its entire path, so that the slide block 19 is moved integrally with the elevating cord 18 moving in the head box 4. There is.

A hexagonal rod-shaped angle adjustment shaft 23 is connected to both ends of the conversion shaft 21,
It is designed to rotate integrally with the conversion shaft 21. The ladder cord 5 is suspended and supported from the angle adjusting shaft 23, and the rotation of the angle adjusting shaft 23 adjusts the angle of each slat 6 through the ladder cord 5. The brake shaft 24 comes into contact with the lifting cord 18 near the tilt shaft 14, and the lifting cord other than the tilt lever 13 is operated.
The movement of 18 is blocked to prevent the slats 6 from returning after the angle adjustment.

Horizontal maintaining members 25 are suspended and supported at both ends of the head box 4. The horizontal maintaining member 25 is rotatably supported only outward, and the roller 26 is rotatably supported. The roller 26 is always urged outward by a spring (not shown) to move the roller 26 vertically. It is designed to roll on a few sides. Therefore, the head box 4 is a horizontal maintaining member.
When guided by 25, it is moved up and down in a horizontal state, and when tilting occurs, one of the horizontal maintaining members 25 is pressed against either one of the vertical frames 2 and 3 so that the up and down movement is prevented.

Now, as described above, the blind built in the double glass sash is arranged in parallel between the lifting shaft 17 and the fifth and sixth guide rollers 11 and 12 when the lifting lever 16 is moved up and down along the operation hole 15. Since the elevating cord 18 that is stretched is always moved the same distance, both ends of the head box 4 are raised and lowered the same distance.
In this state, since the lifting cord 18 in the head box 4 is not moved, the head box 4 is raised and lowered in the horizontal state without adjusting the angle of the slats 6, and the slats 6 are raised and lowered. And the head box 4 is always a lifting lever
Moved twice as much as 16 lift strokes.

When the tilt lever 13 is rotated after the head box 4 is moved up and down to a desired position, the elevating cord 18 is moved along the path and the slide block 19 is moved in the head box 4, and the angle adjusting shaft is moved based on the movement. 23 is rotated and the slats 6 are adjusted in angle. Then, at this time, the head box 4 is not moved up and down.

As described above, the blind can drive the same lifting cord 18 by operating the tilt lever 13 and the lifting lever 16 to lift and lower the slat 6 and adjust its angle. When the slats 6 are moved up and down, the angle of the slats 6 is not adjusted, and when the angles of the slats 6 are adjusted, the slats 6 are not moved up and down.
The angle can be adjusted in the state where it is accurately moved up and down to a desired position. Further, since the slat elevating device as described above can be realized by tensioning the elevating cord 18 in each frame of the sash 1, the frame can be easily housed inside without increasing the size thereof. . Further, the elevating cord 18 is inserted through the head box 4 and is also hooked on the guide rollers 7 and 8 provided at both inner ends of the head box 4. Therefore, the raising / lowering operation of the head box 4 and the angle adjusting operation of the slat 6 can be performed without complicating the internal structure of the head box 4.

Further, in the above-described embodiment, the tilt shaft 14 and the lifting shaft 17 are separately provided as the operation shafts for lifting and adjusting the angle of the slat 6, but as shown in FIG. 3, the lifting cord 18 is fixed at the lower end of the vertical frame 2. It is also possible to hang it on the pulley 27 and then to the tilt shaft 14 so that the tilt shaft 14 can be moved up and down along the vertical frame 2 and can be rotated, as shown in FIG. Lift code 18 to the fifth and sixth guide rollers
The tilt shaft 14 may be directly hooked on the tilt shafts 11 and 12, and the tilt shaft 14 may be vertically operated and rotated along an operation hole 28 provided over substantially the entire length of the vertical frame 2. .

Further, in addition to the structure in which the conversion shaft 21 is provided with the spiral groove 20 as described above, a twisted flat plate-shaped conversion shaft is inserted into and engaged with the slide block, and the reciprocating movement of the slide block is performed based on the twist. It is also possible to adopt a configuration in which the conversion shaft is converted into forward and reverse rotational motion.

EFFECTS OF THE INVENTION As described in detail above, the slat lifting device according to the present invention can drive the common lifting cord 18 to raise and lower the slat 6 and adjust the angle of the slat 6 without interfering with the raising and lowering and angle adjusting operations. Since they can be performed separately, the angle can be adjusted while the slats 6 are accurately moved up and down to a desired position. The elevating cord 18 is inserted through the head box 4 and is also hooked on the guide rollers 7 and 8 provided at both inner ends of the head box 4. Therefore, the raising / lowering operation of the head box 4 and the angle adjusting operation of the slat 6 can be performed without complicating the internal structure of the head box 4. Furthermore, since the structure of the head box lifting device is extremely simple, the sash 1
It has the excellent effect of being able to store each frame without increasing the size.

[Brief description of drawings]

FIG. 1 is a perspective view of a slat elevating device embodying the present invention, FIG. 2 is a front view of a sash equipped with the slat elevating device, and FIGS. 3 and 4 show another embodiment of the present invention. It is a front view. Double glass sash 1, vertical frame 2,3, head box 4, slats 6, guide rollers 7,8, tilt axis 1 as operation axis
4, lifting shaft 17 as an operating shaft, lifting cord 18, slide block 19, conversion shaft 21, angle adjustment shaft 23.

Claims (1)

[Claims] 1. A headbox elevation blind for raising and lowering a slat by raising and lowering a headbox by an elevation device provided in a vertical frame of a sash, wherein guide rollers (7, 8) are provided at both inner ends of the headbox (4). Is rotatably supported, and the lifting cord (18) can be moved into the head box (4) so that the guide rollers (7, 8) are located in a closed loop of the endless lifting cord (18). The guide rollers (7, 8), and the lifting cords (18) are passed from the both ends of the head box (4) through both the upper and lower sash bars (2, 3) to one of the bars ( 2) Guide it inside and hang it on the operation shaft (14, 17), and then operate the operation shaft (14, 17)
Is supported on the vertical frame (2) so that it can be moved up and down and rotated, and a slide block (19) is provided in the head box (4).
Is movably supported, and the elevating cord (18) is attached to the slide block (19), and the reciprocating movement of the slide block (19) is converted into forward / reverse rotary motion and output. ) Is engaged, and the angle adjustment shaft (23) of the slat (6) is connected to the conversion shaft (21) of the head box lifting blind.