JPH0215978Y2 - - Google Patents

Description

[Detailed Description of the Invention] Purpose of the Invention (Field of Industrial Application) This invention relates to a lifting device for blinds that is incorporated into fittings such as glass shoji screens.

(Prior Art) As one type of horizontal blind incorporated into a glass shoji, there is one in which the slats are raised and lowered by moving the headbox up and down. Such blinds are constructed in such a way that a lifting device for raising and lowering the slats by moving the headbox up and down, and a slat angle adjusting device are provided separately, and these can be operated by handles on the glass shoji, etc. was.

(Problems to be solved by the invention) In the above-mentioned conventional technology, the slat lifting device and the angle adjustment device are provided separately, so the structure is complicated and the slat lifting device and angle adjustment device are provided separately. Performing each operation was complicated.

Structure of the invention (means for solving the problem) In order to solve the above problem, this invention has a vertical drive shaft 7 above the installation position of the blind 2.
is rotatably supported, its elevating drive shaft 7 can be rotated by an operation cord 10, a drive drum 13 is fitted to the elevating drive shaft 7 in a relatively non-rotatable manner, and a driven drum 14 is relatively rotatable. The driven drum 14 is always prevented from rotating by the brake device 16, and lifting tapes 23 and 24 are wound around both drums 13 and 14 in the same direction, respectively.
A ladder cord 4 supporting the slat 5 is suspended from the lower ends of the lifting tapes 23 and 24 via a hanging frame 27, and the slat 5 is tilted vertically between the driving drum 13 and the driven drum 14. The engaging pawl 22 and the engaging protrusion 21 are provided in order to rotate the driven drum 14 integrally with the driving drum 13 while resisting the braking force of the brake device 16 only after the driving drum 14 has been driven.

(Function) When the operating cord 10 is operated to rotate the lifting drive shaft 7 using the above means, when the slat 5 is not tilted to the vertical position as shown in FIGS. 22 and engaging protrusion 2
1 do not engage with each other, only the drive drum 13 is rotated, the elevating tape 23 is wound up or rewound, the slat 5 is tilted vertically, and after the slat 5 is tilted vertically, it is not engaged. The mating claws 22 and the engaging protrusions 21 are engaged to rotate the drive drum 13 and the driven drum 14 together, and the lifting tapes 23 and 24 are simultaneously wound up or rewound to move the slat 5 up and down.

(Embodiment) An embodiment embodying this invention will be described below with reference to the drawings. As shown in FIG. 2, a glass shoji 1 has a blind 2 disposed behind the glass plate, A large number of slats 5 are attached to a ladder cord 4 suspended from a head box 3.
are supported respectively, and by raising and lowering the head box 3, each slat 5 is raised and lowered. To explain the elevating device for the head box 3, as shown in FIG. ing. A pulley 9 is attached to one end of the lifting drive shaft 7.
are fitted and fixed, and an endless operation cord 10 is hung from the pulley 9. This operation code 1
0 is suspended within the vertical stile 11 of the glass shoji 1, and a weight 12 is hung on its lower end to tension it in the vertical direction. When the pulley 9 is rotated by operating the operation cord 10, the elevating drive shaft 7 is rotated.

A driving drum 13 and a driven drum 14 are fitted into both ends of the elevating drive shaft 7, respectively. As shown in FIG. 4, the drive drum 13 is fixed to the elevating drive shaft 7 with screws 15 so as to rotate together with the elevating drive shaft 7. The driven drum 14 is loosely fitted onto the elevating drive shaft 7, and is prevented from rotating at all times by a brake device 16 provided on one side thereof. That is, the brake device 1
6 is a case 17 fixed to the upper frame 6, and a coil spring 18 whose one end is supported by the case 17.
and a brake plate 19 that is pressed against one side of the driven drum 14 by the biasing force of the coil spring 18, and the friction between the brake plate 19 and the driven drum 14 prevents the driven drum 14 from rotating at all times. There is.

A circular recess 20 is provided on the side surface of the driven drum 14 on the drive drum 13 side, and an engagement protrusion 21 is formed at one location within the recess 20. Claw 22
is prominent. Then, as shown in FIG. 5, the engagement protrusion 21 is located on the rotation locus of the engagement claw 22, and the drive drum 13 is rotated so that the engagement claw 22 is not engaged with the engagement protrusion 21. In this case, only the drive drum 13 rotates due to the rotation of the elevating drive shaft 7, and after the engagement claw 22 engages with the engagement protrusion 21, the driven drum 14 is rotated as the drive drum 13 rotates. There is.

Elevating tapes 23 and 24 are wound around the driving drum 13 and the driven drum 14 in the same direction, respectively. An angle adjustment shaft 25 of the slat 5 is rotatably supported by the head box 3, and hanging members 26 are fitted and fixed to both ends of the angle adjustment shaft 25. The hanging member 26 is provided with a hanging frame 27 that projects symmetrically with respect to the axis. As shown in FIG. 1, the lower end of the lifting tape 23 wrapped around the drive drum 13
is latched, and a rear hanging frame 27 is latched to the lower end of the lifting tape 24 wrapped around the driven drum 14. Therefore, the angle adjusting shaft 25 and the head box 3 are suspended and supported from the lifting drive shaft 7 by both lifting tapes 23 and 24 at both ends of the angle adjusting shaft 25.

The upper end of the ladder cord 4 is tied to the hanging frame 27, and each slat 5 is connected to the ladder cord 4.
are supported respectively. The lower end of the ladder cord 4 is fixed within the lower stile 28 of the glass shoji 1, and the ladder cord 4 and the lifting tape 2
3 and 24 are hidden within the stile 11.

As shown in FIG. 6, an opening 2 is provided in the vertical center of the vertical stile 11 to take out the operating cord 10.
9 is provided, and an operation door 30 is provided on one side of the opening 29.
is rotatably supported, and its opening 29 can be opened and closed. The operation door 30 is provided with a long hole 30a as a finger rest, and its base end is bent at a right angle to form a take-out piece 31, and the tip of the take-out piece 31 is further bent inward. There is a rubber stopper 32 on the front of the extraction piece 31.
is provided to clamp one operating cord 10, that is, the operating cord 10 on the lifting operation side of the head box 3, and prevent its movement.
Then, when the operation door 30 is opened, the extraction piece 31 pulls together one operation cord 10 held by the stopper 32 and the other operation cord 10 hanging inside the vertical stile 11, and closes the opening 20 of the operation door 30. It is becoming more and more exposed.

Next, the operation of the blind 2 configured as described above will be explained.

Now, like the glass shoji on the left side of Figure 2, the headbox 3 is located between the upper stile 6 and the lower stile 28, and the slat 5 is held horizontally as shown in Figure 8. In this state, as shown in FIG. 5, the engaging claw 22 of the driving drum 13 is at a position approximately 180 degrees away from the engaging protrusion 21 of the driven drum 14 in terms of their rotational angle. be.

When the operation door 30 is opened in order to pull the head box 3 upward from this state, the two operation cords 10 are pulled out by the ejection piece 31 into the operation door 30.
is exposed through the opening 29 of. When the operating cord 10 held between the two operating cords 10 is removed from the stopper 32 and pulled downward, the elevating drive shaft 7 is rotated via the pulley 9. At this time, the operation door 3 is opened from inside the vertical stile 11.
0 Operation code 10 pulled out to the outside is weight 12
automatically drawn into the stile 11.

When the elevating drive shaft 7 is rotated, the drive drum 13
is rotated, but now the engagement pawl 22 of the drive drum 13
Since the drive drum 13 is not engaged with the engagement protrusion 21 of the driven drum 14, only the drive drum 13 rotates and its elevating tape 23 is wound up. Then,
As shown in FIG. 9, only one of the hanging members 26 is pulled up and rotated, and as the hanging member 26 rotates, each slat 5 is tilted via the ladder cord 4. When the slat 5 is tilted to a nearly vertical position as shown in the same figure, the engaging pawl 22 of the driving drum 13 engages with the engaging protrusion 21 of the driven drum 14, as shown by the chain line in FIG. , If the operation cord 10 is further operated in the same direction from that state, the driven drum 1
4 is rotated together with the drive drum 13 while resisting the braking force of the brake device 16. both drums 13,
14 are rotated together, both lifting tapes 23,
24 are both wound up, so the angle adjustment shaft 25
is pulled upward without rotation, and in conjunction with this, each slat 5 is pulled upward while being held substantially vertically.

After the head box 3 has been pulled up to the desired position in this manner, when the operating cord 10 is operated in the opposite direction to rotate the angle adjustment shaft 25 in the reverse direction, only the drive drum 13 is rotated in the reverse direction and the lifting tape 23 is rewound. As a result, the slat 5 is tilted to a desired position within the range from the vertical position shown in FIG. 9 to the horizontal position shown in FIG. 8 or the position shown in FIG.
After tilting to the desired position, the operating cord 10 on the lifting operation side of the head box 3 is inserted into the stopper 32 and held there.
0 is prevented from moving and the head box 3 is held at the desired position.

On the other hand, when lowering the head box 3 to open the blind 2, the operating cord 10 is removed from the stopper 32 and the operating cord 10 is operated in the direction of lowering the head box 3. Now, as shown in FIG. 8, when the operating cord 10 is operated in the downward direction of the head box 3 from the state where the slat 5 is positioned in the horizontal direction, first, only the drive drum 13 is rotated and the elevating tape 23 is rewound to adjust the angle. The shaft 25 is rotated and each slat 5 is tilted to the state shown in FIG. When tilted to this state, the engaging claw 22 of the driving drum 13 engages with the engaging protrusion 21 of the driven drum 14, so the driving drum 13 and the driven drum 14 rotate together, and the lifting tape 23,
24 are both rewound and the angle adjustment shaft 25 is lowered without rotating.

After lowering the head box 3 to the desired position in this way, if necessary, operate the operating cord 10 again in the direction of raising the head box 3.
Only the drive drum 13 can be rotated to adjust the angle of each slat 5.

As described above, in this blind 2, when the operation cord 10 is operated in the upward or downward direction of the head box 3, each slat 5 is first moved to the position shown in FIG. 9 or 10 before the head box 3 is raised or lowered.
The head box 3 is tilted almost vertically as shown in the figure, and then the head box 3 is raised or lowered. Therefore, both raising and lowering and angle adjustment of the slat 4 can be performed by operating the operating cord 10.

In addition, the lifting/lowering and angle adjustment mechanism connects the hanging frame 27 that suspends and supports the ladder cord 4 to the lifting tape 23,
The lifting tapes 23 and 24 are suspended and supported by the driving drum 13 and the driven drum 14, which are rotated by the lifting drive shaft 7, so that they can be wound up and unwound. An engaging pawl 22 and an engaging protrusion 21 are provided between them, so that the driven drum 14 is rotated integrally with the driving drum 13 only after the slat 5 is tilted to a substantially vertical position. is easy.

Effects of the invention As detailed above, this invention
By rotating the slats 5, the slats 5 can be raised and lowered and their angles can be adjusted, and the headbox lift type blind lifting device with a simple structure can be provided, which is an excellent effect.

[Brief explanation of the drawing]

Figure 1 is a perspective view of a lifting device that embodies this invention, Figure 2 is a front view of a glass shoji with a blind attached, and Figure 3 is a front view of the lifting mechanism.
FIG. 4 is a longitudinal sectional view of the driving drum and driven drum portion, FIG. 5 is a cross sectional view showing the engaging protrusion and engaging claw, and FIG. 6 is a perspective view showing the vertical stile of the operation door portion.
FIG. 7 is a cross-sectional view of that part, FIG. 8 is a side view of the blind, and FIGS. 9 and 10 are side views of the blind with the slats tilted in the vertical direction. Blind...2, ladder cord...4, slat...5, elevating drive shaft...7, drive drum...13, driven drum...14, brake device...16, engagement protrusion...
21, engaging claw...22, lifting tape...23, 24.

Claims (1)

[Scope of utility model registration request] The driving drum 13 is fitted and fixed in a relatively non-rotatable manner to the lifting drive shaft 7 which is supported above the blind installation position and is rotatably provided by an operating means, and the driven drum 14 is fitted and fixed in a relatively rotatable manner. 14 is provided with a brake device 16 that always prevents its rotation, and both drums 13 and 14 are
Lifting tapes 23 and 24 are wound in the same direction, respectively, and a ladder cord 4 supporting the slat 5 is suspended from the lower ends of the lifting tapes 23 and 24 via a hanging frame 27, and the driving drum 13 and driven drum 13 are connected to each other. drum 14
It is characterized in that engaging means 21 and 22 are provided between the slats 5 and the driving drum 13 to rotate the driven drum 14 integrally with the driving drum 13 while resisting the braking force of the brake device 16 only after the slat 5 is tilted in the vertical direction. Elevating device for headbox elevating type blinds.